diff --git a/.eslintrc.js b/.eslintrc.js
index 7a0172c35..a8bf32a6d 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -4,7 +4,11 @@ module.exports = {
     commonjs: true,
     es2021: true,
   },
-  extends: ["eslint:recommended", "plugin:node/recommended"],
+  extends: [
+    "eslint:recommended",
+    "plugin:node/recommended",
+    "plugin:jsdoc/recommended"
+  ],
   overrides: [],
   parserOptions: {
     ecmaVersion: "latest"
@@ -17,6 +21,9 @@ module.exports = {
       }
     ]
   },
+  plugins: [
+    "jsdoc"
+  ],
   globals: {
     atom: "writeable"
   }
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
new file mode 100644
index 000000000..e71f5fc29
--- /dev/null
+++ b/.github/workflows/documentation.yml
@@ -0,0 +1,42 @@
+name: Documentation
+
+on:
+  push:
+    branches: [ "master" ]
+  workflow_dispatch:
+    
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+jobs:
+  documentation:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    strategy:
+      matrix:
+        node-version: [16.x]
+
+    steps:
+    - name: Checkout the Latest Code
+      uses: actions/checkout@v3
+
+    - name: Setup NodeJS - ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+
+    - name: Install Dependencies
+      run: yarn install
+
+    - name: Generate Public JSDocs
+      run: yarn run js-docs
+
+    - name: Generate Private JSDocs
+      run: yarn run private-js-docs
+
+    - name: Commit All Changes
+      uses: stefanzweifel/git-auto-commit-action@v4
+      with:
+        commit_message: GH Action Documentation
diff --git a/.github/workflows/editor-tests.yml b/.github/workflows/editor-tests.yml
index 3bb601202..87bb6cd27 100644
--- a/.github/workflows/editor-tests.yml
+++ b/.github/workflows/editor-tests.yml
@@ -1,10 +1,10 @@
 name: Editor tests
 on:
-  - push
   - pull_request
 env:
   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-  
+  ATOM_JASMINE_REPORTER: list
+
 jobs:
   tests:
     name: tests
@@ -13,7 +13,8 @@ jobs:
       !startsWith(github.event.pull_request.title, '[skip-editor-ci]')
     strategy:
       matrix:
-        os: [ubuntu-20.04, macos-latest, windows-2019]
+        # os: [ubuntu-20.04, macos-latest, windows-2019]
+        os: [ubuntu-20.04, macos-latest]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
@@ -34,4 +35,4 @@ jobs:
     - name: Run tests
       uses: GabrielBB/xvfb-action@v1
       with:
-        run: yarn start --test spec
+        run: node script/run-tests.js spec
diff --git a/.github/workflows/package-tests-linux.yml b/.github/workflows/package-tests-linux.yml
index af6961de1..c8353c4f0 100644
--- a/.github/workflows/package-tests-linux.yml
+++ b/.github/workflows/package-tests-linux.yml
@@ -1,9 +1,9 @@
 name: Package tests for Pulsar on Linux
 on:
-  - push
   - pull_request
 env:
-  APM_PATH: ./apm/node_modules/atom-package-manager/bin/apm
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  ATOM_JASMINE_REPORTER: list
 jobs:
   setup:
     name: Build Editor
@@ -12,12 +12,6 @@ jobs:
       !startsWith(github.event.pull_request.title, '[skip-package-ci]')
     runs-on: ubuntu-20.04
     steps:
-    - name: Install windows-build-tools
-      if: ${{ matrix.os == 'windows-latest' }}
-      run: |
-        npm i --global windows-build-tools@4.0.0
-        npm config set msvs_version 2019
-
     - name: Checkout the latest code
       uses: actions/checkout@v2
 
@@ -35,60 +29,144 @@ jobs:
     - name: build dependencies
       run: yarn build:apm
 
-    - name: Cache node_modules
-      id: cache-node
-      uses: actions/cache@v3
-      with:
-        path: node_modules
-        key: linux-modules-${{ hashFiles('package.json') }}
+    - name: build the editor
+      run: (yarn dist deb || yarn dist deb) && mv binaries/*deb pulsar.deb
 
-    - name: Cache apm 
-      id: cache-apm
+    - name: Cache pulsar
+      id: cache-pulsar
       uses: actions/cache@v3
       with:
-        path: apm
-        key: linux-apm-${{ hashFiles('apm/package.json') }}
+        path: pulsar.deb
+        key: pulsar-${{ github.sha }}
 
   test:
-    name: Test Packages
+    name: Package
     needs: setup
     runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
+      max-parallel: 8
       matrix:
         include:
-          - filter: autocomplete|language
-            descr: syntax-related
-          - filter: dark|light
-            descr: themes
-          - filter: git-diff|go-to-line|grammar-selector|line-ending-selector|autoflow|autosave|symbols-view|spell-check|bracket-matcher|whitespace|wrap-guide|snippets|encoding-selector
-            descr: editor related
-          - filter: deprecation-cop|dev-live-reload|incompatible-packages|package-generator|exception-reporting|metrics|update-package-dependencies|styleguide
-            descr: development helpers
-          - filter: welcome|about|background-tips|tabs|tree-view|archive-view|markdown-preview|status-bar|settings-view|notifications
-            descr: UI elements
-          - filter: image-view|bookmarks|keybinding-resolver|link|timecop
-            descr: others
+          - package: "atom-dark-syntax"
+          - package: "atom-dark-ui"
+          - package: "atom-light-syntax"
+          - package: "atom-light-ui"
+          - package: "base16-tomorrow-dark-theme"
+          - package: "base16-tomorrow-light-theme"
+          - package: "one-dark-ui"
+          - package: "one-light-ui"
+          - package: "one-dark-syntax"
+          - package: "one-light-syntax"
+          - package: "solarized-dark-syntax"
+          - package: "solarized-light-syntax"
+          - package: "about"
+          - package: "archive-view"
+          - package: "autocomplete-atom-api"
+          - package: "autocomplete-css"
+          - package: "autocomplete-html"
+          - package: "autocomplete-plus"
+          - package: "autocomplete-snippets"
+          - package: "autoflow"
+          - package: "autosave"
+          - package: "background-tips"
+          - package: "bookmarks"
+          - package: "bracket-matcher"
+          - package: "command-palette"
+          - package: "dalek"
+          - package: "deprecation-cop"
+          - package: "dev-live-reload"
+          - package: "encoding-selector"
+          - package: "exception-reporting"
+          - package: "find-and-replace"
+          - package: "fuzzy-finder"
+          - package: "github"
+          - package: "git-diff"
+          - package: "go-to-line"
+          - package: "grammar-selector"
+          - package: "image-view"
+          - package: "incompatible-packages"
+          - package: "keybinding-resolver"
+          - package: "line-ending-selector"
+          - package: "link"
+          - package: "markdown-preview"
+          - package: "notifications"
+          - package: "open-on-github"
+          - package: "package-generator"
+          - package: "settings-view"
+          - package: "snippets"
+          - package: "spell-check"
+          - package: "status-bar"
+          - package: "styleguide"
+          - package: "symbols-view"
+          - package: "tabs"
+          - package: "timecop"
+          - package: "tree-view"
+          - package: "update-package-dependencies"
+          - package: "welcome"
+          - package: "whitespace"
+          - package: "wrap-guide"
+          - package: "language-c"
+          - package: "language-clojure"
+          - package: "language-coffee-script"
+          - package: "language-csharp"
+          - package: "language-css"
+          - package: "language-gfm"
+          - package: "language-git"
+          - package: "language-go"
+          - package: "language-html"
+          - package: "language-hyperlink"
+          - package: "language-java"
+          - package: "language-javascript"
+          - package: "language-json"
+          - package: "language-less"
+          - package: "language-make"
+          - package: "language-mustache"
+          - package: "language-objective-c"
+          - package: "language-perl"
+          - package: "language-php"
+          - package: "language-property-list"
+          - package: "language-python"
+          - package: "language-ruby"
+          - package: "language-ruby-on-rails"
+          - package: "language-rust-bundled"
+          - package: "language-sass"
+          - package: "language-shellscript"
+          - package: "language-source"
+          - package: "language-sql"
+          - package: "language-text"
+          - package: "language-todo"
+          - package: "language-toml"
+          - package: "language-typescript"
+          - package: "language-xml"
+          - package: "language-yaml"
 
     steps:
     - name: Checkout the latest code
       uses: actions/checkout@v2
+    - name: Setup NodeJS
+      uses: actions/setup-node@v3
+      with:
+        node-version: 16
+    - name: Install Dependencies
+      run: yarn install || yarn install
 
-    - name: Restore node_modules from Cache
-      id: restore-node
+    - name: Build Dependencies
+      run: yarn build || yarn build
+
+    - name: Restore pulsar from Cache
+      id: restore-pulsar
       uses: actions/cache@v3
       with:
-        path: node_modules
-        key: linux-modules-${{ hashFiles('package.json') }}
+        path: pulsar.deb
+        key: pulsar-${{ github.sha }}
 
-    - name: Restore apm from Cache
-      id: restore-apm
-      uses: actions/cache@v3
-      with:
-        path: apm
-        key: linux-apm-${{ hashFiles('apm/package.json') }}
+    - name: Install Pulsar
+      run: sudo dpkg -i pulsar.deb && sudo apt-get -f install -y
 
-    - name: Run Package Tests for ${{ matrix.descr }}
-      uses: GabrielBB/xvfb-action@v1
-      with:
-        run: node -e "require('./script/run-package-tests')(/${{ matrix.filter }}/)"
+    - name: Install xvfb
+      run: sudo apt-get install -y xvfb
+
+    - name: Run ${{ matrix.package }} Tests
+      run: Xvfb :1 & cd node_modules/${{ matrix.package }} && if test -d spec; then DISPLAY=:1 pulsar --test spec; fi
+        # run: node -e "require('./script/run-package-tests')(/${{ matrix.package }}/)"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8843fb37c..f22070349 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,14 +1,304 @@
-# Pulsar next version
+# Changelog
+
+- Format inspired by [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
+- Format defined in [Pulsar Change Log](PENDING_APPROVAL)
+- Project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html)
+
+## [Unreleased]
+
+## 1.102.0
+
+- Fixed a bug where `pulsar` on Windows could never trigger
+- Fixed `github` package shelling out to `git` on macOS
+- Fixed minor bugs found during fixes to tests
+- Improved our testing infastructure to aide in finding and fixing further bugs
+- Updated many dependencies of Pulsar and its core packages
+- New Pulsar Icon on macOS
+- Selected text is styled by default
+- Restored `right-clicked` CSS class on tags
+- Fixed syntax highlighting on C++
+- Updated JavaScript snippets to modern ES6 syntax
+- PPM no longer assumes `master` for git branches
+
+### Pulsar
+- Added: implement signing and notarizing for macOS, PR #4 lol [@Meadowsys](https://github.com/pulsar-edit/pulsar/pull/387)
+- Fixed: Pin `python` brew installation to `3.10` during MacOS Intel Cirrus Build [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/384)
+- Update: Bump `ppm` to `a46537c0b7f0eaaef5404ef88003951fdc988c65` [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/383)
+- Added: Add new macOS icon [@mdibella-dev](https://github.com/pulsar-edit/pulsar/pull/372)
+- Fixed: type $ as # [@Meadowsys](https://github.com/pulsar-edit/pulsar/pull/378)
+- Update: deps: Update github to v0.36.14-pretranspiled-take-2 [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/375)
+- Added: add style to selected text by default [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/238)
+- Added: Set Max Concurrent Package Tests [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/376)
+- Fixed: c++ fixes [@icecream17](https://github.com/pulsar-edit/pulsar/pull/369)
+- Update: deps: Update github to v0.36.14-pretranspiled [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/373)
+- Update `coffeescript` [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/361)
+- Updated: Misc Dependency Updates [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/362)
+- Added: Bundle `autocomplete-plus` [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/358)
+- Fixed: Add LICENSE.md to extra resources (resourcesPath) [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/354)
+- Fixed: Get Windows `pulsar` Working [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/340)
+- Fixed: Restore `right-clicked` class on a right-clicked tab [@savetheclocktower](https://github.com/pulsar-edit/pulsar/pull/368)
+- Updated: ppm: Update submodule to commit 4645ba2905747897b0 [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/371)
+- Added: Machine decaf tabs spec [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/367)
+- Added: Manually Decaf `tabs` package Specs [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/357)
+- Fixed: Uncomment and fix a settings-view package test [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/366)
+- Added: Decaf Changes from Manual and Machine Decaf to Main [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/356)
+- Added: Manual decafe tabs [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/352)
+- Added: Organize failing tests [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/307)
+- Fixed: autocomplete-snippets: Fix repo URL [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/341)
+- Updated: update apm message to pulsar -p [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/337)
+- Fixed: Replace incorrect spellings of 'macOS' with the correct one [@mdibella-dev](https://github.com/pulsar-edit/pulsar/pull/336)
+- Changed: use `let` and `const` in js snippets [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/326)
+- Fixed: Fix URI to correct address [@mdibella-dev](https://github.com/pulsar-edit/pulsar/pull/335)
+- Updated: update copyright year (2023) [@icecream17](https://github.com/pulsar-edit/pulsar/pull/332)
+
+### ppm
+- Fixed: fix: Don't assume `master` when checking git packages for upgrades [@savetheclocktower](https://github.com/pulsar-edit/ppm/pull/56)
+- Fixed: meta: Normalize package.json and lockfile line endings [@DeeDeeG](https://github.com/pulsar-edit/ppm/pull/54)
+- Update: spec: Fixtures Node v10.20.1 --> Electron v12.2.3 [@DeeDeeG](https://github.com/pulsar-edit/ppm/pull/52)
+- Fixed: Fix .com links, pulsar rebranding and rebranding readme [@Daeraxa](https://github.com/pulsar-edit/ppm/pull/48)
+
+### github
+- Fixed: lib: Rebrand getAtomAppName() function (fix shelling out to `git` on macOS) [@DeeDeeG](https://github.com/pulsar-edit/github/pull/13)
+- Fixed: meta: Revert "main" to "./lib/index", no dist (fix package on `master` branch) [@DeeDeeG](https://github.com/pulsar-edit/github/pull/12)
+
+## 1.101.0-beta
+
+- Fixed a bug where macOS menus like "Open" don't do anything
+- Fixed a bug where macOS wouldn't open files by dragging them onto the dock.
+- Fixed a bug where devtools won't open (https://github.com/pulsar-edit/pulsar/issues/260)
+- Fixed a bug where the editor refused to open with the message "GPU process
+isn't usable. Goodbye" (https://github.com/pulsar-edit/pulsar/issues/233)
+- Fixed logo artifacts on Linux
+- Fixed Windows Taskbar Icon being 'Cut in Half'
+- Fixed commands like `--version`, `--package` or `--help` did not show outputs
+- Fixed additional flags not being sent to `--package`
+- Small improvement on the binary size
+- Fixed "install command line tools" on Mac and Windows
+- Cached queries for featured packages (featured packages will load faster, and
+fewer errors on the settings-view regarding package info)
+- Added warning when `settings-view` is disabled, describing how to re-enable it
+
+### Pulsar
+- Added: script: Clean up `pulsar` and `ppm` on uninstall [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/297)
+- Added: increase search query delay [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/289)
+- Fixed: update `packages/README.md` [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/317)
+- Fixed: Fix Windows Icon being cut in half [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/318)
+- Removed: remove unused json [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/309)
+- Added: add ignored `package-lock.json` to packages [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/308)
+- Rebrand: Rebrand AppUserModelID - Ensure Pulsar is separated as its own App Icon on Windows [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/315)
+- Removed: remove fs-plus from image-view package [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/305)
+- Added: Additional Bundling of Core Packages [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/314)
+- Fixed: Resolve some `about` package tests (6 Resolved Tests) [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/310)
+- Fixed: Fix Package Test Cache Issue [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/302)
+- Fixed: Resolve all Tests within `language-html` (Resolves 2 Failing Tests) [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/300)
+- Fixed: Resolve all Tests within `language-javascript` (Resolves 24 Failing Tests) [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/299)
+- Fixed: Resolve 40 Failing `image-view` Tests [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/293)
+- Added: Added changelog entries that we missed [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/292)
+- Removed: meta: Delete preinstall script from package.json [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/296)
+- Added: Improve macOS Builds [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/280)
+- Fixed: Fix `archive-view` [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/294)
+- Added: Improved Windows Builds [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/279)
+- Added: More Bundles [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/290)
+- Fixed: Fix macOS open without window [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/291)
+- Removed: delete workflow from language-java [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/285)
+- Removed: Remove handlers for opening things on Mac [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/288)
+- Rebrand: Rebranding and relinking to new site [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/282)
+- Added: script: symlink ppm in post-install.sh (for .deb and .rpm packages) [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/273)
+- Added: Add --no-sandbox to start script [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/276)
+- Added: exclude directories from build [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/265)
+- Added: add warning when settings-view is disabled [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/243)
+- Fixed: Fix typo [@snowcatridge10](https://github.com/pulsar-edit/pulsar/pull/267)
+- Fixed: Fix install on packaged code [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/269)
+- Fixed: Fix Logo weirdness [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/271)
+- Fixed: Fix installing shell commands to path (macOS) [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/263)
+- Fixed: 🍎 Fix wrong app name resolution in pulsar.sh on Mac [@soupertonic](https://github.com/pulsar-edit/pulsar/pull/252)
+- Fixed: Postinstall error with rm usr/bin/pulsar [@Spiker985](https://github.com/pulsar-edit/pulsar/pull/228)
+- Added: Made changes to the main.js file. [@CatPerson136](https://github.com/pulsar-edit/pulsar/pull/232)
+- Added: Add `--no-sandbox` to Linux Launch [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/262)
+- Removed: removed unused files [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/219)
+- Rebrand: rebrand package publish domain [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/245)
+- Removed: remove metrics code from welcome package [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/244)
+- Fixed: Deep cache for settings view [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/250)
+- Fixed: fix syntax error in `packages/README.md` [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/248)
+- Removed: remove package.json dependencies [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/169)
+- Added: `underscore-plus` to dependencies [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/218)
+
+### ppm
+- Added: Convert body params to query params [@Spiker985](https://github.com/pulsar-edit/ppm/pull/47)
+- Fixed: src: Update Electron header download URL [@DeeDeeG](https://github.com/pulsar-edit/ppm/pull/43)
+
+## v1.100.0-beta
+
 - Bump to Electron 12 and Node 14
-- Added a rebranded API
+- Added a rebranding API
 - Removed experimental file watchers on the editor
 - Ability to install packages from git repositories
-- New backend
-- Better error messages when we can't install a package
+- New Pulsar Package Repository Backend
+- Better error messages when installing a package fails
 - Config watching fixes
 - Bump tree-sitter to 0.20.1 and all grammars to their recent versions
-- Native support for Apple Silicon
-- Change Log Window added to Welcome Package
+- Native support for Apple Silicon and ARM Linux
+- Removed Benchmark Startup Mode
+- Removed all telemetry from Core Editor
+- New Pulsar Website
+- New Test Runner to Improve Testing
+- Added Apple Silicon support to `github` Package v0.36.13
 
-# Atom v1.6.0
-See https://atom.io/releases
+### Pulsar
+- Added:    Incorporate settings-view to core [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/220)
+- Added:    Bundle `autocomplete-css` && `autocomplete-html` [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/212)
+- Added:    add or update `packages/*/package-lock.json` [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/209)
+- Fixed:    Organize our Exclusions/Inclusions [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/208)
+- Added:    Bundle `package-generator` [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/207)
+- Fixed:    meta: Don't exclude 'loophole' or 'pegjs' packages [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/206)
+- Fixed:    Fix `dugite` [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/201)
+- Bumped:   ppm: Update ppm submodule (new Electron headers download URL) [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/198)
+- Removed:  Revert "Merge pull request #184 from pulsar-edit/bump-autocomplete-plus" [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/196)
+- Bumped:   Bump GitHub package [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/186)
+- Fixed:    CI (Windows): Use npm (not yarn) to install ppm [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/185)
+- Bumped:   Bumped `autocomplete-plus` [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/184)
+- Added:    Adding test runner missing files [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/183)
+- Fixed:    fix about package test [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/180)
+- Added:    Add tar.gz target to electron-builder [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/178)
+- Fixed:    Cleanup/standardize pulsar.sh [@Spiker985](https://github.com/pulsar-edit/pulsar/pull/175)
+- Fixed:    Update LICENSE.md [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/171)
+- Removed:  remove old scripts [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/168)
+- Fixed:    Fix Codacy Ignore [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/167)
+- Added:    New ChangeLog Format [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/166)
+- Fixed:    shorten task description if too long [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/163)
+- Fixed:    Improve Package Tests [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/161)
+- Removed:  Metric docs from `welcome` [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/159)
+- Fixed:    PostInstall of `ppm` [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/153)
+- Fixed:    Unmerged Menus ignoring separators [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/151)
+- Removed:  `mkdirp` [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/150)
+- Fixed:    `--package` exiting incorrectly [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/149)
+- Bumped:   `ppm` submodule [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/144)
+- Fixed:    undefined `nsole` [@jonian](https://github.com/pulsar-edit/pulsar/pull/142)
+- Fixed:    Git tab in Binaries [@benonymus](https://github.com/pulsar-edit/pulsar/pull/140)
+- Fixed:    `yarn.lock` versions [@jonian](https://github.com/pulsar-edit/pulsar/pull/139)
+- Added:    `dist` & `binaries` to `gitignore` [@jonain](https://github.com/pulsar-edit/pulsar/pull/138)
+- Bumped:   `ppm` submodule to allow Git Package Install [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/131)
+- Bumped:   `settings-view` 0.261.9 -> 0.261.10 [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/130)
+- Removed:  Unused code fragments from build scripts [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/128)
+- Added:    Ability to run `ppm` from `pulsar` CLI [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/125)
+- Fixed:    base16 URL to use WayBack Machine [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/121)
+- Removed:  `fs-plus` from `exception-reporting` [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/118)
+- Removed:  Benchmark Startup Mode Part 2 [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/115)
+- Removed:  Unused scripts [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/114)
+- Bumped:   `background-tips` 0.28.0 -> 0.28.1 [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/111)
+- Removed:  Tooling bloat [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/110)
+- Bumped:   `snippets` NA -> 1.6.1 [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/107)
+- Removed:  Benchmark Startup mode [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/105)
+- Added:    Binaries for Intel Mac & ARM Linux [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/101)
+- Added:    `yarn dist` accepts arguments [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/97)
+- Fixed:    Load core packages `README.md` [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/96)
+- Fixed:    Unlock terminal on Linux [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/82)
+- Added:    Aliases to workflow for link generation [@kaosine](https://github.com/pulsar-edit/pulsar/pull/78)
+- Fixed:    Hooked `NSFW` directly [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/77)
+- Bumped:   `settings-view` 0.261.8 -> 0.261.9 [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/72)
+- Bumped:   `.nvmrc` 12.18 -> 16 [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/71)
+- Bumped:   `ppm` submodule for new backend [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/68)
+- Removed:  Experimental and internal watchers [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/67)
+- Fixed:    Improvements for windows binaries [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/66)
+- Fixed:    Improvements for binary building [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/63)
+- Bumped:   `async` 3.2.0 -> 3.2.4 [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/59)
+- Removed:  Mystery/Ghost Submodule [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/51)
+- Removed:  Telemetry and Remote Crash Reports [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/40)
+- Added:    Bundled `language-c` into the editor [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/33)
+- Bumped:   `electron` 11.5.0 -> 12.2.3 [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/28)
+- Fixed:    `yarn install` due to syntax error [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/16)
+- Added:    Bundled most language grammars into the editor [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/14)
+- Bumped:   `autocomplete-html` 0.8.8 -> 0.8.9 [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/14)
+- Bumped:   `tree-sitter` NA -> 0.20.0 [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/14)
+- Added:    Branding Config on Global Atom API [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/7)
+- Added:    `yarn` as method to build editor. [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/6)
+- Bumped:   `fs-admin` 0.15.0 -> 0.19.0 [@kaosine](https://github.com/pulsar-edit/pulsar/pull/4)
+- Bumped:   `text-buffer` 13.18.5 -> 13.18.6 [@kaosine](https://github.com/pulsar-edit/pulsar/pull/4)
+- Decaffeinate: Numerous efforts from many contributors to decaffeinate the editor:
+  * [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/112)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/45)
+  * [@Spiker985](https://github.com/pulsar-edit/pulsar/pull/29)
+  * [@fabianfiorotto](https://github.com/pulsar-edit/pulsar/pull/13)
+- Rebrand: Numerous efforts from many contributors to rebrand the editor:
+  * [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/190)
+  * [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/173)
+  * [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/172)
+  * [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/156)
+  * [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/145)
+  * [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/136)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/126)
+  * [@ElectronicsArchiver](https://github.com/pulsar-edit/pulsar/pull/123)
+  * [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/122)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/120)
+  * [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/103)
+  * [@Daeraxa](https://github.com/pulsar-edit/pulsar/pull/83)
+  * [@Spiker985](https://github.com/pulsar-edit/pulsar/pull/81)
+  * [@kaosine](https://github.com/pulsar-edit/pulsar/pull/65)
+  * [@Spiker985](https://github.com/pulsar-edit/pulsar/pull/58)
+  * [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/54)
+  * [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/22)
+  * [@Spiker985](https://github.com/pulsar-edit/pulsar/pull/17)
+  * [@softcode589](https://github.com/pulsar-edit/pulsar/pull/11)
+  * [@LandarXT](https://github.com/pulsar-edit/pulsar/pull/10)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/8)
+- Tests: Numerous efforts from many contributors to improve our tests:
+  * [@icecream17](https://github.com/pulsar-edit/pulsar/pull/152)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/141)
+  * [@DeeDeeG](https://github.com/pulsar-edit/pulsar/pull/116)
+  * [@Spiker985](https://github.com/pulsar-edit/pulsar/pull/109)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/70)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/50)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/48)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/46)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/42)
+  * [@confused-Techie](https://github.com/pulsar-edit/pulsar/pull/41)
+  * [@fabianfiorotto](https://github.com/pulsar-edit/pulsar/pull/36)
+  * [@fabianfiorotto](https://github.com/pulsar-edit/pulsar/pull/35)
+  * [@mauricioszabo](https://github.com/pulsar-edit/pulsar/pull/18)
+
+### ppm
+- Fixed:    ppm PostInstall [@mauricioszabo](https://github.com/pulsar-edit/ppm/pull/41)
+- Added:    Better `help` command display [@mauricioszabo](https://github.com/pulsar-edit/ppm/pull/40)
+- Fixed:    Empty Featured Packages [@jonian](https://github.com/pulsar-edit/ppm/pull/38)
+- Fixed:    Use ppm as basename in `getResourcePath` [@jonain](https://github.com/pulsar-edit/ppm/pull/36)
+- Fixed:    Installation from Git [@mauricioszabo](https://github.com/pulsar-edit/ppm/pull/34)
+- Added:    Ability to define tag to install [@mauricioszabo](https://github.com/pulsar-edit/ppm/pull/13)
+- Added:    Our new Pulsar Package Repository Backend [@confused-Techie](https://github.com/pulsar-edit/ppm/pull/5)
+- Bumped:   `electron` to 12 [@mauricioszabo](https://github.com/pulsar-edit/ppm/pull/2)
+- Rebrand: Numerous efforts from many contributors to rebrand ppm:
+  * [@Sertonix](https://github.com/pulsar-edit/ppm/pull/12)
+  * [@softcode589](https://github.com/pulsar-edit/ppm/pull/7)
+  * [@mauricioszabo](https://github.com/pulsar-edit/ppm/pull/6)
+- Tests: Numerous efforts from many contributors to improve our tests:
+  * [@DeeDeeG](https://github.com/pulsar-edit/ppm/pull/39)
+
+### autocomplete-html
+- Fixed:    Finding the proper Node version [@mauricioszabo](https://github.com/pulsar-edit/autocomplete-html/pull/1)
+
+### settings-view
+- Added:    Remember Scroll Position [@jonian](https://github.com/pulsar-edit/settings-view/pull/12)
+- Removed:  Support for deprecated packages [@Sertonix](https://github.com/pulsar-edit/settings-view/pull/6)
+- Added:    Better errors when search fails [@mauricioszabo](https://github.com/pulsar-edit/settings-view/pull/2)
+- Rebrand: Numerous efforts from many contributors to rebrand settings-view:
+  * [@mauricioszabo](https://github.com/pulsar-edit/settings-view/pull/7)
+  * [@softcode589](https://github.com/pulsar-edit/settings-view/pull/3)
+  * [@mauricioszabo](https://github.com/pulsar-edit/settings-view/pull/1)
+- Tests: Numerous efforts from many contributors to improve our tests:
+  * [@confused-Techie](https://github.com/pulsar-edit/settings-view/pull/10)
+
+### snippets
+- Added:    Proper Testing [@confused-Techie](https://github.com/pulsar-edit/snippets/pull/4)
+- Removed:  `fs-plus` [@Sertonix](https://github.com/pulsar-edit/snippets/pull/2)
+- Fixed:    Fix open Snippets URI [@Sertonix](https://github.com/pulsar-edit/snippets/pull/1)
+
+### background-tips
+- Bumped:   `background-tips` 0.28.0 -> 0.28.1 [@confused-Techie](https://github.com/pulsar-edit/background-tips/pull/4)
+- Rebrand: Numerous efforts from many contributors to rebrand background-tips:
+  * [@Sertonix](https://github.com/pulsar-edit/background-tips/pull/5)
+  * [@Sertonix](https://github.com/pulsar-edit/background-tips/pull/2)
+  * [@Sertonix](https://github.com/pulsar-edit/background-tips/pull/1)
+
+
+## Atom v1.6.0
+
+- See https://atom.io/releases
diff --git a/Dockerfile b/Dockerfile
index d36f26bc8..339eb4dcb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # VERSION:        0.2
-# DESCRIPTION:    Image to build Atom
+# DESCRIPTION:    Image to build Pulsar
 
 FROM ubuntu:20.04
 
diff --git a/LICENSE.md b/LICENSE.md
index fe0f45349..50a586694 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2022 Pulsar-Edit
+Copyright (c) 2022-2023 Pulsar-Edit
 Original work copyright (c) 2011-2022 GitHub Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
diff --git a/README.md b/README.md
index db7de4566..149f4f8b9 100644
--- a/README.md
+++ b/README.md
@@ -26,12 +26,13 @@
 
 <br>
 
-*A Community-led Hyper-Hackable Text Editor, built on **[Electron]**,*  
-*and based on everything we love about our favorite editors.*
+*A Community-led Hyper-Hackable Text Editor,*
+*Forked from [Atom], built on [Electron].*
 
-*We designed it to be deeply customizable, but still*  
+*Designed to be deeply customizable, but still*
 *approachable using the default configuration.*
 
+
 <br>
 <br>
 
@@ -44,6 +45,7 @@
 [OpenCollective]: https://opencollective.com/pulsar-edit
 [Discussions]: https://github.com/orgs/pulsar-edit/discussions
 [Electron]: https://github.com/electron/electron
+[Atom]: https://github.blog/2022-06-08-sunsetting-atom/
 [Discord]: https://discord.gg/7aEbB9dGRT 'Join the Pulsar Discord today!'
 [Crowdin]: https://crowdin.pulsar-edit.dev
 [Status]: https://cirrus-ci.com/github/pulsar-edit/pulsar/master
@@ -64,7 +66,7 @@
 
 <!---------------------------{ Images }--------------------------->
 
-[Preview]: https://user-images.githubusercontent.com/378023/49132478-f4b77680-f31f-11e8-9e10-e8454d8d9b7e.png 'Preview of the editor.'
+[Preview]: resources/readme.png 'Preview of the editor.'
 
 
 <!---------------------------{ Badges }--------------------------->
diff --git a/docs/.jsdoc.json b/docs/.jsdoc.json
new file mode 100644
index 000000000..fae020030
--- /dev/null
+++ b/docs/.jsdoc.json
@@ -0,0 +1,11 @@
+{
+    "recurseDepth": 10,
+    "source": {
+        "include": ["src", "packages"],
+        "exclude": ["node_modules"],
+        "excludePattern": "((^|\\/|\\\\)_|node_modules)"
+    },
+    "opts": {
+        "recurse": true
+    }
+}
diff --git a/docs/Pulsar-API-Documentation.md b/docs/Pulsar-API-Documentation.md
new file mode 100644
index 000000000..f5e7e39b7
--- /dev/null
+++ b/docs/Pulsar-API-Documentation.md
@@ -0,0 +1,298 @@
+## Classes
+
+<dl>
+<dt><a href="#AtomEnvironment">AtomEnvironment</a></dt>
+<dd><p>Pulsar global for dealing with packages, themes, menus, and the window.</p>
+<p>An instance of this class is always available as the <code>atom</code> global.</p>
+</dd>
+<dt><a href="#Clipboard">Clipboard</a></dt>
+<dd></dd>
+</dl>
+
+## Constants
+
+<dl>
+<dt><a href="#etch">etch</a></dt>
+<dd></dd>
+<dt><a href="#fs">fs</a></dt>
+<dd></dd>
+<dt><a href="#dalek">dalek</a></dt>
+<dd></dd>
+<dt><a href="#assert">assert</a></dt>
+<dd></dd>
+</dl>
+
+## Functions
+
+<dl>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#conditionPromise">conditionPromise()</a></dt>
+<dd></dd>
+<dt><a href="#destroy">destroy()</a></dt>
+<dd></dd>
+<dt><a href="#destroyChildren">destroyChildren()</a></dt>
+<dd></dd>
+<dt><a href="#releaseChildren">releaseChildren()</a></dt>
+<dd></dd>
+<dt><a href="#subscribeToRepository">subscribeToRepository()</a></dt>
+<dd></dd>
+<dt><a href="#updateDiffs">updateDiffs()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#conditionPromise">conditionPromise()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+</dl>
+
+<a name="AtomEnvironment"></a>
+
+## AtomEnvironment
+Pulsar global for dealing with packages, themes, menus, and the window.
+
+An instance of this class is always available as the `atom` global.
+
+**Kind**: global class  
+
+* [AtomEnvironment](#AtomEnvironment)
+    * _instance_
+        * [.clipboard](#AtomEnvironment+clipboard) : [<code>Clipboard</code>](#Clipboard)
+        * [.deserializers](#AtomEnvironment+deserializers) : <code>DeserializerManager</code>
+        * [.views](#AtomEnvironment+views) : <code>ViewRegistry</code>
+        * [.notifications](#AtomEnvironment+notifications) : <code>NotificationManager</code>
+        * [.config](#AtomEnvironment+config) : <code>Config</code>
+        * [.keymaps](#AtomEnvironment+keymaps) : <code>KeymapManager</code>
+        * [.tooltips](#AtomEnvironment+tooltips) : <code>TooltipManager</code>
+        * [.commands](#AtomEnvironment+commands) : <code>CommandRegistry</code>
+        * [.grammars](#AtomEnvironment+grammars) : <code>GrammarRegistry</code>
+        * [.styles](#AtomEnvironment+styles) : <code>StyleManager</code>
+        * [.packages](#AtomEnvironment+packages) : <code>PackageManager</code>
+        * [.themes](#AtomEnvironment+themes) : <code>ThemeManager</code>
+        * [.menu](#AtomEnvironment+menu) : <code>MenuManager</code>
+        * [.contextMenu](#AtomEnvironment+contextMenu) : <code>ContextMenuManager</code>
+        * [.project](#AtomEnvironment+project) : <code>Project</code>
+        * [.textEditors](#AtomEnvironment+textEditors) : <code>TextEditorRegistry</code>
+        * [.workspace](#AtomEnvironment+workspace) : <code>Workspace</code>
+        * [.history](#AtomEnvironment+history) : <code>HistoryManager</code>
+        * _Messaging the User_
+            * [.beep()](#AtomEnvironment+beep)
+    * _static_
+        * _Event Subscription_
+            * [.onDidBeep(callback)](#AtomEnvironment.onDidBeep) ⇒ <code>Disposable</code>
+
+<a name="AtomEnvironment+clipboard"></a>
+
+### atomEnvironment.clipboard : [<code>Clipboard</code>](#Clipboard)
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+deserializers"></a>
+
+### atomEnvironment.deserializers : <code>DeserializerManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+views"></a>
+
+### atomEnvironment.views : <code>ViewRegistry</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+notifications"></a>
+
+### atomEnvironment.notifications : <code>NotificationManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+config"></a>
+
+### atomEnvironment.config : <code>Config</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+keymaps"></a>
+
+### atomEnvironment.keymaps : <code>KeymapManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+tooltips"></a>
+
+### atomEnvironment.tooltips : <code>TooltipManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+commands"></a>
+
+### atomEnvironment.commands : <code>CommandRegistry</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+grammars"></a>
+
+### atomEnvironment.grammars : <code>GrammarRegistry</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+styles"></a>
+
+### atomEnvironment.styles : <code>StyleManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+packages"></a>
+
+### atomEnvironment.packages : <code>PackageManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+themes"></a>
+
+### atomEnvironment.themes : <code>ThemeManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+menu"></a>
+
+### atomEnvironment.menu : <code>MenuManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+contextMenu"></a>
+
+### atomEnvironment.contextMenu : <code>ContextMenuManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+project"></a>
+
+### atomEnvironment.project : <code>Project</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+textEditors"></a>
+
+### atomEnvironment.textEditors : <code>TextEditorRegistry</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+workspace"></a>
+
+### atomEnvironment.workspace : <code>Workspace</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+history"></a>
+
+### atomEnvironment.history : <code>HistoryManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+beep"></a>
+
+### atomEnvironment.beep()
+Visually and audibly trigger a beep.
+
+**Kind**: instance method of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+**Category**: Messaging the User  
+**Emits**: <code>event:beep</code>  
+<a name="AtomEnvironment.onDidBeep"></a>
+
+### AtomEnvironment.onDidBeep(callback) ⇒ <code>Disposable</code>
+Invoke the given callback whenever [::beep](::beep) is called.
+
+**Kind**: static method of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+**Returns**: <code>Disposable</code> - on which `.dispose()` can be called to unsubscribe.  
+**Category**: Event Subscription  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| callback | <code>function</code> | Function to be called whenever [::beep](::beep) is called. |
+
+<a name="Clipboard"></a>
+
+## Clipboard
+**Kind**: global class  
+<a name="new_Clipboard_new"></a>
+
+### new Clipboard()
+Represents the clipboard used for copying and pasting in Pulsar.
+
+An instance of this class is always available as the `atom.clipboard` global.
+
+**Example**  
+```js
+// returns 'hello'
+atom.clipboard.write('hello');
+
+console.log(atom.clipboard.read());
+```
+<a name="etch"></a>
+
+## etch
+**Kind**: global constant  
+**Jsx**: etch.dom  
+<a name="fs"></a>
+
+## fs
+**Kind**: global constant  
+**Babel**:   
+<a name="dalek"></a>
+
+## dalek
+**Kind**: global constant  
+**Babel**:   
+<a name="assert"></a>
+
+## assert
+**Kind**: global constant  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="conditionPromise"></a>
+
+## conditionPromise()
+**Kind**: global function  
+**Babel**:   
+<a name="destroy"></a>
+
+## destroy()
+**Kind**: global function  
+**Describe**: Handles tear down of destructables and subscriptions.
+  Does not handle release of memory. This method should only be called
+  just before this object is freed, and should only tear down the main
+  object components that are guarunteed to exist at all times.  
+<a name="destroyChildren"></a>
+
+## destroyChildren()
+**Kind**: global function  
+**Describe**: Destroys this objects children (non-freeing), it's intended
+  to be an ease-of use function for maintaing this object. This method
+  should only tear down objects that are selectively allocated upon
+  repository discovery.
+
+  Example: this.diffs only exists when we have a repository.  
+<a name="releaseChildren"></a>
+
+## releaseChildren()
+**Kind**: global function  
+**Describe**: The memory releasing complement function of `destroyChildren`.
+  frees the memory allocated at all child object storage locations
+  when there is no repository.  
+<a name="subscribeToRepository"></a>
+
+## subscribeToRepository()
+**Kind**: global function  
+**Describe**: handles all subscriptions based on the repository in focus  
+<a name="updateDiffs"></a>
+
+## updateDiffs()
+**Kind**: global function  
+**Describe**: Uses text markers in the target editor to visualize
+  git modifications, additions, and deletions. The current algorithm
+  just redraws the markers each call.  
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="conditionPromise"></a>
+
+## conditionPromise()
+**Kind**: global function  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
diff --git a/docs/Source-Code-Documentation.md b/docs/Source-Code-Documentation.md
new file mode 100644
index 000000000..f19274580
--- /dev/null
+++ b/docs/Source-Code-Documentation.md
@@ -0,0 +1,306 @@
+## Classes
+
+<dl>
+<dt><a href="#AtomEnvironment">AtomEnvironment</a></dt>
+<dd><p>Pulsar global for dealing with packages, themes, menus, and the window.</p>
+<p>An instance of this class is always available as the <code>atom</code> global.</p>
+</dd>
+<dt><a href="#Clipboard">Clipboard</a></dt>
+<dd></dd>
+</dl>
+
+## Constants
+
+<dl>
+<dt><a href="#etch">etch</a></dt>
+<dd></dd>
+<dt><a href="#fs">fs</a></dt>
+<dd></dd>
+<dt><a href="#dalek">dalek</a></dt>
+<dd></dd>
+<dt><a href="#assert">assert</a></dt>
+<dd></dd>
+</dl>
+
+## Functions
+
+<dl>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#conditionPromise">conditionPromise()</a></dt>
+<dd></dd>
+<dt><a href="#destroy">destroy()</a></dt>
+<dd></dd>
+<dt><a href="#destroyChildren">destroyChildren()</a></dt>
+<dd></dd>
+<dt><a href="#releaseChildren">releaseChildren()</a></dt>
+<dd></dd>
+<dt><a href="#subscribeToRepository">subscribeToRepository()</a></dt>
+<dd></dd>
+<dt><a href="#updateDiffs">updateDiffs()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+<dt><a href="#conditionPromise">conditionPromise()</a></dt>
+<dd></dd>
+<dt><a href="#beforeEach">beforeEach()</a></dt>
+<dd></dd>
+</dl>
+
+<a name="AtomEnvironment"></a>
+
+## AtomEnvironment
+Pulsar global for dealing with packages, themes, menus, and the window.
+
+An instance of this class is always available as the `atom` global.
+
+**Kind**: global class  
+
+* [AtomEnvironment](#AtomEnvironment)
+    * _instance_
+        * [.clipboard](#AtomEnvironment+clipboard) : [<code>Clipboard</code>](#Clipboard)
+        * [.deserializers](#AtomEnvironment+deserializers) : <code>DeserializerManager</code>
+        * [.views](#AtomEnvironment+views) : <code>ViewRegistry</code>
+        * [.notifications](#AtomEnvironment+notifications) : <code>NotificationManager</code>
+        * [.config](#AtomEnvironment+config) : <code>Config</code>
+        * [.keymaps](#AtomEnvironment+keymaps) : <code>KeymapManager</code>
+        * [.tooltips](#AtomEnvironment+tooltips) : <code>TooltipManager</code>
+        * [.commands](#AtomEnvironment+commands) : <code>CommandRegistry</code>
+        * [.grammars](#AtomEnvironment+grammars) : <code>GrammarRegistry</code>
+        * [.styles](#AtomEnvironment+styles) : <code>StyleManager</code>
+        * [.packages](#AtomEnvironment+packages) : <code>PackageManager</code>
+        * [.themes](#AtomEnvironment+themes) : <code>ThemeManager</code>
+        * [.menu](#AtomEnvironment+menu) : <code>MenuManager</code>
+        * [.contextMenu](#AtomEnvironment+contextMenu) : <code>ContextMenuManager</code>
+        * [.project](#AtomEnvironment+project) : <code>Project</code>
+        * [.textEditors](#AtomEnvironment+textEditors) : <code>TextEditorRegistry</code>
+        * [.workspace](#AtomEnvironment+workspace) : <code>Workspace</code>
+        * [.history](#AtomEnvironment+history) : <code>HistoryManager</code>
+        * _Messaging the User_
+            * [.beep()](#AtomEnvironment+beep)
+    * _static_
+        * [.preloadPackages](#AtomEnvironment.preloadPackages) ℗
+        * _Event Subscription_
+            * [.onDidBeep(callback)](#AtomEnvironment.onDidBeep) ⇒ <code>Disposable</code>
+
+<a name="AtomEnvironment+clipboard"></a>
+
+### atomEnvironment.clipboard : [<code>Clipboard</code>](#Clipboard)
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+deserializers"></a>
+
+### atomEnvironment.deserializers : <code>DeserializerManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+views"></a>
+
+### atomEnvironment.views : <code>ViewRegistry</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+notifications"></a>
+
+### atomEnvironment.notifications : <code>NotificationManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+config"></a>
+
+### atomEnvironment.config : <code>Config</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+keymaps"></a>
+
+### atomEnvironment.keymaps : <code>KeymapManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+tooltips"></a>
+
+### atomEnvironment.tooltips : <code>TooltipManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+commands"></a>
+
+### atomEnvironment.commands : <code>CommandRegistry</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+grammars"></a>
+
+### atomEnvironment.grammars : <code>GrammarRegistry</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+styles"></a>
+
+### atomEnvironment.styles : <code>StyleManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+packages"></a>
+
+### atomEnvironment.packages : <code>PackageManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+themes"></a>
+
+### atomEnvironment.themes : <code>ThemeManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+menu"></a>
+
+### atomEnvironment.menu : <code>MenuManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+contextMenu"></a>
+
+### atomEnvironment.contextMenu : <code>ContextMenuManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+project"></a>
+
+### atomEnvironment.project : <code>Project</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+textEditors"></a>
+
+### atomEnvironment.textEditors : <code>TextEditorRegistry</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+workspace"></a>
+
+### atomEnvironment.workspace : <code>Workspace</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+history"></a>
+
+### atomEnvironment.history : <code>HistoryManager</code>
+**Kind**: instance property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+<a name="AtomEnvironment+beep"></a>
+
+### atomEnvironment.beep()
+Visually and audibly trigger a beep.
+
+**Kind**: instance method of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+**Category**: Messaging the User  
+**Emits**: <code>event:beep</code>  
+<a name="AtomEnvironment.preloadPackages"></a>
+
+### AtomEnvironment.preloadPackages ℗
+Returns output of `preloadPackages()` for this Classes Instance of `Packages`.
+
+**Kind**: static property of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+**Access**: private  
+<a name="AtomEnvironment.onDidBeep"></a>
+
+### AtomEnvironment.onDidBeep(callback) ⇒ <code>Disposable</code>
+Invoke the given callback whenever [::beep](::beep) is called.
+
+**Kind**: static method of [<code>AtomEnvironment</code>](#AtomEnvironment)  
+**Returns**: <code>Disposable</code> - on which `.dispose()` can be called to unsubscribe.  
+**Category**: Event Subscription  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| callback | <code>function</code> | Function to be called whenever [::beep](::beep) is called. |
+
+<a name="Clipboard"></a>
+
+## Clipboard
+**Kind**: global class  
+<a name="new_Clipboard_new"></a>
+
+### new Clipboard()
+Represents the clipboard used for copying and pasting in Pulsar.
+
+An instance of this class is always available as the `atom.clipboard` global.
+
+**Example**  
+```js
+// returns 'hello'
+atom.clipboard.write('hello');
+
+console.log(atom.clipboard.read());
+```
+<a name="etch"></a>
+
+## etch
+**Kind**: global constant  
+**Jsx**: etch.dom  
+<a name="fs"></a>
+
+## fs
+**Kind**: global constant  
+**Babel**:   
+<a name="dalek"></a>
+
+## dalek
+**Kind**: global constant  
+**Babel**:   
+<a name="assert"></a>
+
+## assert
+**Kind**: global constant  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="conditionPromise"></a>
+
+## conditionPromise()
+**Kind**: global function  
+**Babel**:   
+<a name="destroy"></a>
+
+## destroy()
+**Kind**: global function  
+**Describe**: Handles tear down of destructables and subscriptions.
+  Does not handle release of memory. This method should only be called
+  just before this object is freed, and should only tear down the main
+  object components that are guarunteed to exist at all times.  
+<a name="destroyChildren"></a>
+
+## destroyChildren()
+**Kind**: global function  
+**Describe**: Destroys this objects children (non-freeing), it's intended
+  to be an ease-of use function for maintaing this object. This method
+  should only tear down objects that are selectively allocated upon
+  repository discovery.
+
+  Example: this.diffs only exists when we have a repository.  
+<a name="releaseChildren"></a>
+
+## releaseChildren()
+**Kind**: global function  
+**Describe**: The memory releasing complement function of `destroyChildren`.
+  frees the memory allocated at all child object storage locations
+  when there is no repository.  
+<a name="subscribeToRepository"></a>
+
+## subscribeToRepository()
+**Kind**: global function  
+**Describe**: handles all subscriptions based on the repository in focus  
+<a name="updateDiffs"></a>
+
+## updateDiffs()
+**Kind**: global function  
+**Describe**: Uses text markers in the target editor to visualize
+  git modifications, additions, and deletions. The current algorithm
+  just redraws the markers each call.  
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
+<a name="conditionPromise"></a>
+
+## conditionPromise()
+**Kind**: global function  
+**Babel**:   
+<a name="beforeEach"></a>
+
+## beforeEach()
+**Kind**: global function  
+**Babel**:   
diff --git a/dot-atom/init.js b/dot-atom/init.js
index 3465e69d2..4c190b2c2 100644
--- a/dot-atom/init.js
+++ b/dot-atom/init.js
@@ -11,3 +11,7 @@
 //     console.log(`Saved! ${editor.getPath()}`)
 //   )
 // );
+//
+// See the Pulsar Launch manual for more information on this file and how to
+// customize it.
+// https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#the-init-file
diff --git a/dot-atom/keymap.cson b/dot-atom/keymap.cson
index a785f6717..9930c2935 100644
--- a/dot-atom/keymap.cson
+++ b/dot-atom/keymap.cson
@@ -18,15 +18,15 @@
 #   'ctrl-p': 'core:move-down'
 #
 # You can find more information about keymaps in these guides:
-# * http://flight-manual.atom.io/using-atom/sections/basic-customization/#customizing-keybindings
-# * http://flight-manual.atom.io/behind-atom/sections/keymaps-in-depth/
+# * https://pulsar-edit.dev/docs/launch-manual/sections/using-pulsar/#customizing-keybindings
+# * https://pulsar-edit.dev/docs/launch-manual/sections/behind-pulsar#keymaps-in-depth
 #
 # If you're having trouble with your keybindings not working, try the
 # Keybinding Resolver: `Cmd+.` on macOS and `Ctrl+.` on other platforms. See the
 # Debugging Guide for more information:
-# * http://flight-manual.atom.io/hacking-atom/sections/debugging/#check-the-keybindings
+# * https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#check-your-keybindings
 #
 # This file uses CoffeeScript Object Notation (CSON).
 # If you are unfamiliar with CSON, you can read more about it in the
-# Pulsar Flight Manual:
-# http://flight-manual.atom.io/using-atom/sections/basic-customization/#configuring-with-cson
+# Pulsar Launch Manual:
+# https://pulsar-edit.dev/docs/launch-manual/sections/using-pulsar/#configuring-with-cson
diff --git a/dot-atom/snippets.cson b/dot-atom/snippets.cson
index 879dd2ad4..644ca58b6 100644
--- a/dot-atom/snippets.cson
+++ b/dot-atom/snippets.cson
@@ -17,5 +17,5 @@
 #
 # This file uses CoffeeScript Object Notation (CSON).
 # If you are unfamiliar with CSON, you can read more about it in the
-# Pulsar Flight Manual:
-# http://flight-manual.atom.io/using-atom/sections/basic-customization/#_cson
+# Pulsar Launch Manual:
+# https://pulsar-edit.dev/docs/launch-manual/sections/using-pulsar/#configuring-with-cson
diff --git a/dot-atom/styles.less b/dot-atom/styles.less
index e4fad4f31..6a451554f 100644
--- a/dot-atom/styles.less
+++ b/dot-atom/styles.less
@@ -1,10 +1,10 @@
 /*
  * Your Stylesheet
  *
- * This stylesheet is loaded when Atom starts up and is reloaded automatically
+ * This stylesheet is loaded when Pulsar starts up and is reloaded automatically
  * when it is changed and saved.
  *
- * Add your own CSS or Less to fully customize Atom.
+ * Add your own CSS or Less to fully customize Pulsar.
  * If you are unfamiliar with Less, you can read more about it here:
  * http://lesscss.org
  */
diff --git a/hooks/README.md b/hooks/README.md
new file mode 100644
index 000000000..b18ace024
--- /dev/null
+++ b/hooks/README.md
@@ -0,0 +1,25 @@
+### Contents
+| Filename | Description |
+| - | - |
+| post-checkout | This hook executes after a branch checkout, or branch switch has occurred. |
+| post-merge | This hook executes after a branch merge has occurred |
+| update_editor.sh | The actual brains of the hooks. Performs a yarn install, yarn build, yarn build:apm, and syncs all submodules. |
+
+### Disclaimer
+These hooks are not guaranteed. These were made out of convenience and presented to the org as an optional tool for usage.
+
+### Usage
+There are several ways to apply these hooks:
+- You can manually copy the files over to the `<pulsar-repo-root>/.git/hooks` folder and validate that they are executable - the effect should be immediate. This is the preferred option for Windows.
+- You can use manage_hooks.sh to copy/symlink the hooks you choose. This is the preferred option for Linux/macOS.
+  - Your mileage may vary on macOS as it has not been tested outright, but should work in theory.
+
+### Instructions
+- Open your favorite terminal
+- Navigate to `<pulsar-repo-root>/hooks`.
+  - IMPORTANT: The bash completions will only work within this directory, and are activated when using exactly `./manage-hooks.sh`.
+- If you have bash-completions, source the `manage_hooks-completion.bash` file to allow for auto-complete ie `source manage_hooks-completion.bash`.
+- Allow the auto-complete responses to guide you.
+- Standard commands are `list`, `install` and `remove`
+- The `install` and `remove` commands require the hook you wish to install, followed by an optional parameter for `copy` vs `symlink` with symlink being the default.
+  - A symbolically linked hook allows you to receive updates in the future. If you plan on adjusting your hook(s), you probably want to `copy` the files to the `<pulsar-repo-root>/.git/hooks` directory
diff --git a/hooks/manage_hooks-completion.bash b/hooks/manage_hooks-completion.bash
new file mode 100644
index 000000000..8e105e0b9
--- /dev/null
+++ b/hooks/manage_hooks-completion.bash
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+#Not gonna lie, this is some magical stuff, but I will try to explain it
+
+#Automatic variables used by complete
+#COMPREPLY = An array of autocompletions to pass back to the shell
+#COMP_WORDS = The passed-in list of parameters
+#COMP_CWORD = The index of the current word as related to the count of
+#parameters
+
+#compgen = Generates an array of autocompletions to pass back to the shell
+#based on provided parameters
+
+function __completion() {
+  COMPREPLY=()
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  prev="${COMP_WORDS[COMP_CWORD-1]}"
+  opts="list install remove"
+
+  #Determine what "level" of autocomplete we are operating on
+  #1 is no params
+  #2 is 1 param, in this instance the command
+  #3 etc
+  case ${COMP_CWORD} in
+    1)
+      #Generate a Word-list from opts from the current word
+      COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+      ;;
+    2)
+      case ${prev} in
+        install)
+          #Generate a list of filenames (and append "all") based on the current
+          #directory and current word while ignoring select files
+          COMPREPLY=( $(compgen -W "all $(ls --ignore='*.md' --ignore='*.sh' --ignore='*.bash')" -- ${cur}) )
+          ;;
+        remove)
+          #Generate a list of filenames (and append "all") based on the
+          #.git/hooks directory and current word while ignoring the sample
+          #files
+          COMPREPLY=( $(compgen -W "all $(ls ../.git/hooks --ignore='*.sample')" -- ${cur}) )
+          ;;
+      esac
+      ;;
+    3)
+      case "${COMP_WORDS[COMP_CWORD-2]}" in
+        install)
+          #When attempting to autocomplete for the third parameter ie copy
+          #/symbolic AND the command is install
+          #Generate a list of Words from the provded string
+          COMPREPLY=( $(compgen -W "copy symbolic" -- ${cur}) )
+          ;;
+      esac
+      ;;
+  esac
+}
+
+#Use the function defined above, when an autocomplete event for
+#./manage_hooks.sh is fired. This is why you must be in the proper directory
+complete -F __completion ./manage_hooks.sh
diff --git a/hooks/manage_hooks.sh b/hooks/manage_hooks.sh
new file mode 100755
index 000000000..b64295939
--- /dev/null
+++ b/hooks/manage_hooks.sh
@@ -0,0 +1,83 @@
+#!/bin/bash
+
+USAGEMSG="Usage: manage_hooks <action> <hook> <option>"
+
+if [[ $# -lt 1 ]] || [[ $# -gt 3 ]]; then
+  echo "$USAGEMSG"
+  exit 1
+fi
+
+action="$1"
+
+case $1 in
+  list)
+    ls --color=if-tty -l ../.git/hooks --ignore='*.sample'
+    ;;
+
+  install)
+    #Grab our list of files if all was passed.
+    #Couldn't get * to function without globbing
+    if [[ "$2" == "all" ]]; then
+      hooks=( $(readlink -f $(ls --ignore='*.md' --ignore='*.sh' --ignore='*.bash')) )
+    else
+      hooks=( $(readlink -f "$2") )
+    fi
+
+    #Default to symbolic
+    if [[ -z $3 ]]; then
+      option="symbolic"
+    else
+      option="$3"
+    fi
+
+    case $option in
+      copy)
+        #If copying, copy the update_editor file as well
+        hooks+=( "$(readlink -f "update_editor.sh")" "${hooks[@]}" )
+
+        for hook in "${hooks[@]}"; do
+          #If the file doesnt already exist copy it over
+          if [[ ! -f "../.git/hooks/$(basename "$hook")" ]]; then
+            echo "$hook"
+            cp "$hook" "../.git/hooks"
+          fi
+        done
+        ;;
+
+      symbolic)
+        #Switch to the git hook directory, because symlink hooks are required
+        #to be relative
+        cd "../.git/hooks"
+
+        for hook in "${hooks[@]}"; do
+          #If the file doesnt already exist, symlink it
+          if [[ ! -f "$(basename $hook)" ]]; then
+            echo "$(readlink -f .)/$(basename $hook)"
+            ln --symbolic --relative "../../hooks/$(basename "$hook")"
+          fi
+        done
+        ;;
+    esac
+    ;;
+  remove)
+    #Switch to the git hook directory, so we dont have to deal with
+    #relative file paths
+    cd "../.git/hooks"
+
+    #Grab the canonical path to the file, readlink always follows symlinks
+    if [[ "$2" == "all" ]]; then
+      hooks=( $(realpath --no-symlinks $(ls --ignore='*.sample' --ignore='*.sh')) )
+    else
+      hooks=( $(realpath --no-symlinks "$2") )
+    fi
+
+    for hook in "${hooks[@]}"; do
+      echo "$hook"
+      rm "$hook"
+    done
+    ;;
+  *)
+    echo "$USAGEMSG"
+    exit 1
+    ;;
+esac
diff --git a/hooks/post-checkout b/hooks/post-checkout
new file mode 100755
index 000000000..d002c2c97
--- /dev/null
+++ b/hooks/post-checkout
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+#This hook launches after a branch change, or branch checkout. It cannot affect
+#the outcome of a git switch or git checkout with the exception that the hook
+#exit status becomes the exit status of the antecedent command
+#See https://git-scm.com/docs/githooks#_post_checkout
+
+if [[ -L "$0" ]]; then
+    #If our launched script is a link, grab the root
+    hookRoot="$(dirname $(readlink --canonicalize "$0"))"
+else
+    #Otherwise use the launched script directory
+    hookRoot="$(dirname "$0")"
+fi
+
+if [[ "$1" == "$2" ]]; then
+    #Previous HEAD and new HEAD are the same, ignore
+    exit 0
+fi
+
+if [[ "$3" == '1' ]]; then
+    #A branch checkout will always be flagged as 1, and a file checkout as 0
+    "${hookRoot}/update_editor.sh" $0
+fi
diff --git a/hooks/post-merge b/hooks/post-merge
new file mode 100755
index 000000000..3086355c5
--- /dev/null
+++ b/hooks/post-merge
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+#This hook launches after a git pull. It cannot affect a git merge, and will not
+#be executed if a merge fails
+#See https://git-scm.com/docs/githooks#_post_merge
+
+if [[ -L "$0" ]]; then
+    #If our launched script is a link, grab the root
+    hookRoot="$(dirname $(readlink --canonicalize $0))"
+else
+    #Otherwise use the launched script directory
+    hookRoot="$(dirname "$0")"
+fi
+
+"${hookRoot}/update_editor.sh" $0
diff --git a/hooks/update_editor.sh b/hooks/update_editor.sh
new file mode 100755
index 000000000..dd1bd837e
--- /dev/null
+++ b/hooks/update_editor.sh
@@ -0,0 +1,56 @@
+#!/bin/bash
+
+case $1 in
+    *post-checkout)
+        ACTION='Branch change'
+        ;;
+    *post-merge)
+        ACTION='Remote pull'
+        ;;
+    *)
+        ACTION="Unknown event ($1)"
+        ;;
+esac
+
+echo "${ACTION} occurred, rebuilding editor"
+
+export ATOM_ELECTRON_VERSION=$(cat package.json | rg --trim --replace "" '"electronVersion": "' | rg --replace "" '",')
+
+replacement="1.100.$(date +'%Y%m%d%H%k%M')"
+filter='("version": ")[0-9\.]+(",)'
+regex="s/$filter/\1$replacement\2/"
+
+sed --regexp-extended --in-place "$regex" package.json
+
+echo '  Installing editor packages'
+yarn install &> /dev/null
+if [[ $? == 0 ]]; then
+    echo '    Install completed successfully'
+else
+    echo '    Install failed'
+    exit 1
+fi
+
+echo '  Rebuilding modules'
+yarn build &> /dev/null
+if [[ $? == 0 ]]; then
+    echo '    Module build completed successfully'
+else
+    echo '    Module build failed'
+    exit 1
+fi
+
+echo '  Rebuilding PPM'
+if [[ -d "ppm" ]]; then
+    yarn build:apm &> /dev/null
+    if [[ $? == 0 ]]; then
+        echo '    PPM build completed successfully'
+    else
+        echo '    PPM build failed'
+        exit 1
+    fi
+else
+    echo '    PPM folder not found'
+fi
+
+git submodule sync && git submodule update
diff --git a/package.json b/package.json
index 9871317c1..db63585a6 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "pulsar",
   "author": "Pulsar Community <noreply@pulsar-edit.com>",
   "productName": "Pulsar",
-  "version": "1.63.0-dev",
+  "version": "1.102.0-dev",
   "description": "A Community-led Hyper-Hackable Text Editor",
   "branding": {
     "id": "pulsar",
@@ -25,7 +25,7 @@
     "@babel/core": "7.18.6",
     "@electron/remote": "2.0.8",
     "about": "file:packages/about",
-    "archive-view": "https://codeload.github.com/atom/archive-view/legacy.tar.gz/refs/tags/v0.66.0",
+    "archive-view": "file:packages/archive-view",
     "async": "3.2.4",
     "atom-dark-syntax": "file:packages/atom-dark-syntax",
     "atom-dark-ui": "file:packages/atom-dark-ui",
@@ -34,32 +34,30 @@
     "atom-light-ui": "file:packages/atom-light-ui",
     "atom-select-list": "^0.8.1",
     "autocomplete-atom-api": "https://codeload.github.com/atom/autocomplete-atom-api/legacy.tar.gz/refs/tags/v0.10.7",
-    "autocomplete-css": "https://codeload.github.com/atom/autocomplete-css/legacy.tar.gz/refs/tags/v0.17.5",
-    "autocomplete-html": "https://github.com/pulsar-edit/autocomplete-html.git#v0.8.9",
-    "autocomplete-plus": "https://codeload.github.com/atom/autocomplete-plus/legacy.tar.gz/refs/tags/v2.42.5",
-    "autocomplete-snippets": "https://codeload.github.com/atom/autocomplete-snippets/legacy.tar.gz/refs/tags/v1.12.1",
+    "autocomplete-css": "file:packages/autocomplete-css",
+    "autocomplete-html": "file:packages/autocomplete-html",
+    "autocomplete-plus": "file:./packages/autocomplete-plus",
+    "autocomplete-snippets": "file:packages/autocomplete-snippets",
     "autoflow": "file:packages/autoflow",
     "autosave": "https://codeload.github.com/atom/autosave/legacy.tar.gz/refs/tags/v0.24.6",
     "babel-preset-atomic": "^5.0.0",
-    "background-tips": "https://codeload.github.com/pulsar-edit/background-tips/legacy.tar.gz/refs/tags/v0.28.1",
+    "background-tips": "file:packages/background-tips",
     "base16-tomorrow-dark-theme": "file:packages/base16-tomorrow-dark-theme",
     "base16-tomorrow-light-theme": "file:packages/base16-tomorrow-light-theme",
     "bookmarks": "https://codeload.github.com/atom/bookmarks/legacy.tar.gz/refs/tags/v0.46.0",
     "bracket-matcher": "https://github.com/pulsar-edit/bracket-matcher.git#use-napi-oniguruma",
+    "bracket-matcher": "https://github.com/pulsar-edit/bracket-matcher.git#c877977",
     "chai": "4.3.4",
     "clear-cut": "^2.0.2",
-    "coffee-script": "1.12.7",
+    "coffeescript": "1.12.7",
     "color": "3.1.3",
-    "command-palette": "https://codeload.github.com/atom/command-palette/legacy.tar.gz/refs/tags/v0.43.5",
+    "command-palette": "file:packages/command-palette",
     "dalek": "file:packages/dalek",
     "dedent": "^0.7.0",
     "deprecation-cop": "file:packages/deprecation-cop",
     "dev-live-reload": "file:packages/dev-live-reload",
-    "devtron": "1.4.0",
     "document-register-element": "^1.14.10",
-    "electron-notarize": "1.0.0",
-    "electron-osx-sign": "0.5.0",
-    "encoding-selector": "https://codeload.github.com/atom/encoding-selector/legacy.tar.gz/refs/tags/v0.23.9",
+    "encoding-selector": "file:packages/encoding-selector",
     "etch": "0.14.1",
     "event-kit": "^2.5.3",
     "exception-reporting": "file:packages/exception-reporting",
@@ -70,14 +68,14 @@
     "fs-admin": "0.19.0",
     "fs-plus": "^3.1.1",
     "fstream": "1.0.12",
-    "fuzzaldrin": "^2.1",
     "fuzzy-finder": "https://github.com/pulsar-edit/fuzzy-finder.git#simplify-code",
     "git-diff": "file:packages/git-diff",
+    "git-utils": "5.7.1",
     "glob": "^7.1.1",
     "go-to-line": "file:packages/go-to-line",
     "grammar-selector": "file:packages/grammar-selector",
     "grim": "2.0.3",
-    "image-view": "https://codeload.github.com/atom/image-view/legacy.tar.gz/refs/tags/v0.64.0",
+    "image-view": "file:packages/image-view",
     "incompatible-packages": "file:packages/incompatible-packages",
     "jasmine-json": "~0.0",
     "jasmine-reporters": "1.1.0",
@@ -122,7 +120,7 @@
     "line-ending-selector": "file:packages/line-ending-selector",
     "line-top-index": "0.3.1",
     "link": "file:packages/link",
-    "markdown-preview": "https://codeload.github.com/atom/markdown-preview/legacy.tar.gz/refs/tags/v0.160.2",
+    "markdown-preview": "file:./packages/markdown-preview",
     "minimatch": "^3.0.3",
     "mocha": "6.2.3",
     "mocha-junit-reporter": "2.0.0",
@@ -137,44 +135,45 @@
     "one-light-syntax": "file:packages/one-light-syntax",
     "one-light-ui": "file:packages/one-light-ui",
     "oniguruma": "https://github.com/Aerijo/napi-oniguruma.git",
-    "open-on-github": "https://codeload.github.com/atom/open-on-github/legacy.tar.gz/refs/tags/v1.3.2",
-    "package-generator": "https://codeload.github.com/atom/package-generator/legacy.tar.gz/refs/tags/v1.3.0",
+    "package-generator": "file:packages/package-generator",
+    "pathwatcher": "^8.1.2",
     "postcss": "8.2.10",
     "postcss-selector-parser": "6.0.4",
-    "prebuild-install": "6.0.0",
     "property-accessors": "^1.1.3",
     "resolve": "1.18.1",
     "scandal": "^3.2.0",
     "scoped-property-store": "^0.17.0",
     "scrollbar-style": "^4.0.1",
     "season": "^6.0.2",
-    "semver": "7.3.2",
+    "semver": "7.3.8",
     "service-hub": "^0.7.4",
-    "settings-view": "https://github.com/pulsar-edit/settings-view.git#v0.261.11",
+    "settings-view": "file:packages/settings-view",
     "sinon": "9.2.1",
-    "snippets": "https://codeload.github.com/pulsar-edit/snippets/legacy.tar.gz/refs/tags/v1.6.1",
+    "snippets": "github:pulsar-edit/snippets#bb00f909c6c645b173f27346875d8fa0c7af09f7",
     "solarized-dark-syntax": "file:packages/solarized-dark-syntax",
     "solarized-light-syntax": "file:packages/solarized-light-syntax",
     "source-map-support": "0.5.21",
     "spell-check": "https://codeload.github.com/atom/spell-check/legacy.tar.gz/refs/tags/v0.77.1",
-    "status-bar": "https://codeload.github.com/atom/status-bar/legacy.tar.gz/refs/tags/v1.8.17",
-    "styleguide": "https://codeload.github.com/atom/styleguide/legacy.tar.gz/refs/tags/v0.49.12",
+    "sqlite3": "4",
+    "status-bar": "file:packages/status-bar",
+    "styleguide": "file:./packages/styleguide",
     "superstring": "https://github.com/pulsar-edit/superstring-wasm.git#536739fef8f8cab757970b5aa56397e2f9493a02",
     "symbols-view": "https://codeload.github.com/atom/symbols-view/legacy.tar.gz/refs/tags/v0.118.4",
-    "tabs": "https://codeload.github.com/atom/tabs/legacy.tar.gz/refs/tags/v0.110.2",
-    "temp": "0.9.2",
+    "tabs": "file:packages/tabs",
+    "temp": "0.9.4",
     "text-buffer": "https://github.com/pulsar-edit/text-buffer.git#f8702c877",
     "timecop": "https://codeload.github.com/atom/timecop/legacy.tar.gz/refs/tags/v0.36.2",
     "tree-sitter": "https://github.com/pulsar-edit/node-tree-sitter.git#c304335",
     "tree-view": "https://github.com/pulsar-edit/tree-view.git#4274c7a",
     "typescript-simple": "8.0.6",
+    "underscore-plus": "^1.7.0",
     "update-package-dependencies": "file:./packages/update-package-dependencies",
     "vscode-ripgrep": "1.9.0",
     "welcome": "file:packages/welcome",
     "whitespace": "https://codeload.github.com/atom/whitespace/legacy.tar.gz/refs/tags/v0.37.8",
     "winreg": "^1.2.1",
-    "wrap-guide": "https://codeload.github.com/atom/wrap-guide/legacy.tar.gz/refs/tags/v0.41.0",
-    "yargs": "16.1.0"
+    "wrap-guide": "file:./packages/wrap-guide",
+    "yargs": "17.6.2"
   },
   "packageDependencies": {
     "atom-dark-syntax": "file:./packages/atom-dark-syntax",
@@ -190,50 +189,50 @@
     "solarized-dark-syntax": "file:./packages/solarized-dark-syntax",
     "solarized-light-syntax": "file:./packages/solarized-light-syntax",
     "about": "file:./packages/about",
-    "archive-view": "0.66.0",
+    "archive-view": "file:./packages/archive-view",
     "autocomplete-atom-api": "0.10.7",
-    "autocomplete-css": "0.17.5",
-    "autocomplete-html": "0.8.9",
-    "autocomplete-plus": "2.42.5",
-    "autocomplete-snippets": "1.12.1",
+    "autocomplete-css": "file:./packages/autocomplete-css",
+    "autocomplete-html": "file:./packages/autocomplete-html",
+    "autocomplete-plus": "file:./packages/autocomplete-plus",
+    "autocomplete-snippets": "file:./packages/autocomplete-snippets",
     "autoflow": "file:./packages/autoflow",
     "autosave": "0.24.6",
-    "background-tips": "0.28.0",
-    "bookmarks": "0.46.0",
+    "background-tips": "file:./packages/background-tips",
+    "bookmarks": "file:./packages/bookmarks",
     "bracket-matcher": "0.92.0",
-    "command-palette": "0.43.5",
+    "command-palette": "file:./packages/command-palette",
     "dalek": "file:./packages/dalek",
     "deprecation-cop": "file:./packages/deprecation-cop",
     "dev-live-reload": "file:./packages/dev-live-reload",
-    "encoding-selector": "0.23.9",
+    "encoding-selector": "file:./packages/encoding-selector",
     "exception-reporting": "file:./packages/exception-reporting",
     "find-and-replace": "0.220.1",
     "fuzzy-finder": "1.14.3",
     "git-diff": "file:./packages/git-diff",
     "go-to-line": "file:./packages/go-to-line",
     "grammar-selector": "file:./packages/grammar-selector",
-    "image-view": "0.64.0",
+    "image-view": "file:./packages/image-view",
     "incompatible-packages": "file:./packages/incompatible-packages",
     "keybinding-resolver": "0.39.1",
     "line-ending-selector": "file:./packages/line-ending-selector",
     "link": "file:./packages/link",
-    "markdown-preview": "0.160.2",
+    "markdown-preview": "file:./packages/markdown-preview",
     "notifications": "0.72.1",
-    "open-on-github": "1.3.2",
-    "package-generator": "1.3.0",
-    "settings-view": "0.261.9",
+    "open-on-github": "file:./packages/open-on-github",
+    "package-generator": "file:./packages/package-generator",
+    "settings-view": "file:./packages/settings-view",
     "snippets": "1.6.1",
     "spell-check": "0.77.1",
-    "status-bar": "1.8.17",
-    "styleguide": "0.49.12",
+    "status-bar": "file:./packages/status-bar",
+    "styleguide": "file:./packages/styleguide",
     "symbols-view": "0.118.4",
-    "tabs": "0.110.2",
+    "tabs": "file:./packages/tabs",
     "timecop": "0.36.2",
     "tree-view": "0.229.1",
     "update-package-dependencies": "file:./packages/update-package-dependencies",
     "welcome": "file:./packages/welcome",
     "whitespace": "0.37.8",
-    "wrap-guide": "0.41.0",
+    "wrap-guide": "file:./packages/wrap-guide",
     "language-c": "file:./packages/language-c",
     "language-clojure": "file:./packages/language-clojure",
     "language-coffee-script": "file:./packages/language-coffee-script",
@@ -271,31 +270,23 @@
   },
   "private": true,
   "scripts": {
-    "preinstall": "node -e 'process.exit(0)'",
     "build": "electron-rebuild",
     "build:apm": "cd ppm && yarn install",
-    "start": "electron --enable-logging . -f",
-    "dist": "node script/electron-builder.js"
-  },
-  "standard-engine": "./script/node_modules/standard",
-  "standard": {
-    "env": {
-      "atomtest": true,
-      "browser": true,
-      "jasmine": true,
-      "node": true
-    },
-    "globals": [
-      "atom"
-    ]
+    "start": "electron --no-sandbox --enable-logging . -f",
+    "dist": "node script/electron-builder.js",
+    "js-docs": "jsdoc2md --files src --configure docs/.jsdoc.json > ./docs/Pulsar-API-Documentation.md",
+    "private-js-docs": "jsdoc2md --private --files src --configure docs/.jsdoc.json > ./docs/Source-Code-Documentation.md"
   },
   "devDependencies": {
+    "@electron/notarize": "^1.2.3",
     "@playwright/test": "1.22.2",
     "electron": "12.2.3",
     "electron-builder": "23.3.1",
     "electron-rebuild": "3.2.7",
-    "eslint": "^8.27.0",
+    "eslint": "^8.33.0",
+    "eslint-plugin-jsdoc": "^39.7.4",
     "eslint-plugin-node": "^11.1.0",
+    "jsdoc-to-markdown": "^8.0.0",
     "playwright": "1.22.2",
     "playwright-core": "1.22.2",
     "random-seed": "0.3.0",
diff --git a/packages/README.md b/packages/README.md
index 0013cd127..0c8e85798 100644
--- a/packages/README.md
+++ b/packages/README.md
@@ -3,7 +3,7 @@
 This folder contains core packages that are bundled with Pulsar releases. Not all core packages are kept here; please
 see the table below for the location of every core package.
 
-> **NOTE:** There is an ongoing effort to migrate more Atom packages from their individual repositories to this folder.
+> **NOTE:** There is an ongoing effort to migrate more Pulsar packages from their individual repositories to this folder.
 See [RFC 003](https://github.com/atom/atom/blob/master/docs/rfcs/003-consolidate-core-packages.md) for more details.
 
 | Package | Where to find it | Migration issue |
@@ -14,30 +14,30 @@ See [RFC 003](https://github.com/atom/atom/blob/master/docs/rfcs/003-consolidate
 | **atom-light-syntax** | [`./atom-light-syntax`](./atom-light-syntax) | |
 | **atom-light-ui** | [`./atom-light-ui`](./atom-light-ui) | |
 | **autocomplete-atom-api** | [`atom/autocomplete-atom-api`][autocomplete-atom-api] |  |
-| **autocomplete-css** | [`atom/autocomplete-css`][autocomplete-css] |  |
-| **autocomplete-html** | [`atom/autocomplete-html`][autocomplete-html] |  |
-| **autocomplete-plus** | [`atom/autocomplete-plus`][autocomplete-plus] |  |
-| **autocomplete-snippets** | [`atom/autocomplete-snippets`][autocomplete-snippets] |  |
+| **autocomplete-css** | [`./autocomplete-css`](./autocomplete-css) |  |
+| **autocomplete-html** | [`./autocomplete-html`](./autocomplete-html) |  |
+| **autocomplete-plus** | [`./autocomplete-plus`][./autocomplete-plus] |  |
+| **autocomplete-snippets** | [`./autocomplete-snippets`](./autocomplete-snippets) |  |
 | **autoflow** | [`./autoflow`](./autoflow) | |
-| **autosave** | [`atom/autosave`][autosave] | [#17834](https://github.com/atom/atom/issues/17834) |
-| **background-tips** | [`atom/background-tips`][background-tips] | [#17835](https://github.com/atom/atom/issues/17835) |
+| **autosave** | [`pulsar-edit/autosave`][autosave] | [#17834](https://github.com/atom/atom/issues/17834) |
+| **background-tips** | [`./background-tips`](./background-tips) | |
 | **base16-tomorrow-dark-theme** | [`./base16-tomorrow-dark-theme`](./base16-tomorrow-dark-theme) | |
 | **base16-tomorrow-light-theme** | [`./base16-tomorrow-light-theme`](./base16-tomorrow-light-theme) | |
-| **bookmarks** | [`atom/bookmarks`][bookmarks] | [#18273](https://github.com/atom/atom/issues/18273) |
+| **bookmarks** | [`./bookmarks`](./bookmarks) | |
 | **bracket-matcher** | [`atom/bracket-matcher`][bracket-matcher] |  |
-| **command-palette** | [`atom/command-palette`][command-palette] |  |
-| **dalek** | [`./dalek`](./dalek) | [#17838](https://github.com/atom/atom/issues/17838) |
+| **command-palette** | [`./command-palette`](./command-palette) |  |
+| **dalek** | [`./dalek`](./dalek) | |
 | **deprecation-cop** | [`./deprecation-cop`](./deprecation-cop) | |
 | **dev-live-reload** | [`./dev-live-reload`](./dev-live-reload) | |
-| **encoding-selector** | [`atom/encoding-selector`][encoding-selector] | [#17841](https://github.com/atom/atom/issues/17841) |
+| **encoding-selector** | [`./encoding-selector`](./encoding-selector) | |
 | **exception-reporting** | [`./exception-reporting`](./exception-reporting) | |
-| **find-and-replace** | [`atom/find-and-replace`][find-and-replace] |  |
-| **fuzzy-finder** | [`atom/fuzzy-finder`][fuzzy-finder] |  |
-| **github** | [`atom/github`][github] |  |
+| **find-and-replace** | [`pulsar-edit/find-and-replace`][find-and-replace] |  |
+| **fuzzy-finder** | [`pulsar-edit/fuzzy-finder`][fuzzy-finder] |  |
+| **github** | [`pulsar-edit/github`][github] |  |
 | **git-diff** | [`./git-diff`](./git-diff) | |
 | **go-to-line** | [`./go-to-line`](./go-to-line) | |
 | **grammar-selector** | [`./grammar-selector`](./grammar-selector) | |
-| **image-view** | [`atom/image-view`][image-view] | [#18274](https://github.com/atom/atom/issues/18274) |
+| **image-view** | [`./image-view`](./image-view) | |
 | **incompatible-packages** | [`./incompatible-packages`](./incompatible-packages) | |
 | **keybinding-resolver** | [`atom/keybinding-resolver`][keybinding-resolver] | [#18275](https://github.com/atom/atom/issues/18275) |
 | **language-c** | [`./language-c`](./language-c) |  |
@@ -76,59 +76,40 @@ See [RFC 003](https://github.com/atom/atom/blob/master/docs/rfcs/003-consolidate
 | **language-yaml** | [`./language-yaml`](./language-yaml) |  |
 | **line-ending-selector** | [`./line-ending-selector`](./line-ending-selector) | |
 | **link** | [`./link`](./link) | |
-| **markdown-preview** | [`atom/markdown-preview`][markdown-preview] |  |
+| **markdown-preview** | [`./markdown-preview`][./markdown-preview] |  |
 | **notifications** | [`atom/notifications`][notifications] | [#18277](https://github.com/atom/atom/issues/18277) |
 | **one-dark-syntax** | [`./one-dark-syntax`](./one-dark-syntax) | |
 | **one-dark-ui** | [`./one-dark-ui`](./one-dark-ui) | |
 | **one-light-syntax** | [`./one-light-syntax`](./one-light-syntax) | |
 | **one-light-ui** | [`./one-light-ui`](./one-light-ui) | |
-| **open-on-github** | [`atom/open-on-github`][open-on-github] | [#18278](https://github.com/atom/atom/issues/18278) |
-| **package-generator** | [`atom/package-generator`][package-generator] | [#18279](https://github.com/atom/atom/issues/18279) |
-| **settings-view** | [`atom/settings-view`][settings-view] |  |
-| **snippets** | [`atom/snippets`][snippets] |  |
+| **open-on-github** | [`./open-on-github`](./open-on-github) | |
+| **settings-view** | [`./settings-view`](./settings-view) |  |
+| **package-generator** | [`./package-generator`](./package-generator) | |
+| **snippets** | [`pulsar-edit/snippets`][snippets] |  |
 | **solarized-dark-syntax** | [`./solarized-dark-syntax`](./solarized-dark-syntax) | |
 | **solarized-light-syntax** | [`./solarized-light-syntax`](./solarized-light-syntax) | |
 | **spell-check** | [`atom/spell-check`][spell-check] |  |
-| **status-bar** | [`atom/status-bar`][status-bar] | [#18282](https://github.com/atom/atom/issues/18282) |
-| **styleguide** | [`atom/styleguide`][styleguide] | [#18283](https://github.com/atom/atom/issues/18283) |
-| **symbols-view** | [`atom/symbols-view`][symbols-view] |  |
-| **tabs** | [`atom/tabs`][tabs] |  |
-| **timecop** | [`atom/timecop`][timecop] | [#18272](https://github.com/atom/atom/issues/18272) |
-| **tree-view** | [`atom/tree-view`][tree-view] |  |
+| **status-bar** | [`./status-bar`](./status-bar) | |
+| **styleguide** | [`./styleguide`][./styleguide] | |
+| **symbols-view** | [`pulsar-edit/symbols-view`][symbols-view] |  |
+| **tabs** | [`./tabs`](./tabs) |  |
+| **timecop** | [`pulsar-edit/timecop`][timecop] | [#18272](https://github.com/atom/atom/issues/18272) |
+| **tree-view** | [`pulsar-edit/tree-view`][tree-view] |  |
 | **update-package-dependencies** | [`./update-package-dependencies`](./update-package-dependencies) | |
 | **welcome** | [`./welcome`](./welcome) | |
-| **whitespace** | [`atom/whitespace`][whitespace] |  |
-| **wrap-guide** | [`atom/wrap-guide`][wrap-guide] | [#18286](https://github.com/atom/atom/issues/18286) |
+| **whitespace** | [`./whitespace`](./whitespace) |  |
+| **wrap-guide** | [`./wrap-guide`][./wrap-guide] | |
 
-[archive-view]: https://github.com/pulsar-edit/archive-view
 [autocomplete-atom-api]: https://github.com/pulsar-edit/autocomplete-atom-api
-[autocomplete-css]: https://github.com/pulsar-edit/autocomplete-css
-[autocomplete-html]: https://github.com/pulsar-edit/autocomplete-html
-[autocomplete-plus]: https://github.com/pulsar-edit/autocomplete-plus
-[autocomplete-snippets]: https://github.com/pulsar-edit/autocomplete-snippets
 [autosave]: https://github.com/pulsar-edit/autosave
-[background-tips]: https://github.com/pulsar-edit/background-tips
-[bookmarks]: https://github.com/pulsar-edit/bookmarks
 [bracket-matcher]: https://github.com/pulsar-edit/bracket-matcher
-[command-palette]: https://github.com/pulsar-edit/command-palette
-[encoding-selector]: https://github.com/pulsar-edit/encoding-selector
 [find-and-replace]: https://github.com/pulsar-edit/find-and-replace
 [fuzzy-finder]: https://github.com/pulsar-edit/fuzzy-finder
 [github]: https://github.com/pulsar-edit/github
-[image-view]: https://github.com/pulsar-edit/image-view
 [keybinding-resolver]: https://github.com/pulsar-edit/keybinding-resolver
-[markdown-preview]: https://github.com/pulsar-edit/markdown-preview
 [notifications]: https://github.com/pulsar-edit/notifications
-[open-on-github]: https://github.com/pulsar-edit/open-on-github
-[package-generator]: https://github.com/pulsar-edit/package-generator
-[settings-view]: https://github.com/pulsar-edit/settings-view
 [snippets]: https://github.com/pulsar-edit/snippets
 [spell-check]: https://github.com/pulsar-edit/spell-check
-[status-bar]: https://github.com/pulsar-edit/status-bar
-[styleguide]: https://github.com/pulsar-edit/styleguide
 [symbols-view]: https://github.com/pulsar-edit/symbols-view
-[tabs]: https://github.com/pulsar-edit/tabs
 [timecop]: https://github.com/pulsar-edit/timecop
 [tree-view]: https://github.com/pulsar-edit/tree-view
-[whitespace]: https://github.com/pulsar-edit/whitespace
-[wrap-guide]: https://github.com/pulsar-edit/wrap-guide
diff --git a/packages/about/LICENSE.md b/packages/about/LICENSE.md
index cf3de7776..16d254de9 100644
--- a/packages/about/LICENSE.md
+++ b/packages/about/LICENSE.md
@@ -1,20 +1,22 @@
-Copyright (c) 2015 Machisté N. Quintana
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2015 Machisté N. Quintana
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/packages/about/README.md b/packages/about/README.md
index 183538d9e..2b3fd45ec 100644
--- a/packages/about/README.md
+++ b/packages/about/README.md
@@ -1,21 +1,17 @@
 # About package
 
-View useful information about your Atom installation.
+View useful information about your Pulsar installation.
 
-![About Atom](https://cloud.githubusercontent.com/assets/16760489/19395499/69bbb780-922d-11e6-9779-2b8327027ea5.png)
+![About Pulsar](https://cloud.githubusercontent.com/assets/16760489/19395499/69bbb780-922d-11e6-9779-2b8327027ea5.png)
 
-This is a package for [Atom](https://atom.io), a community-led hyper-hackable text editor
+This is a package for [Pulsar](https://pulsar-edit.dev), a community-led hyper-hackable text editor
 
 ## Usage
 
-This package provides a cross-platform "About Atom" view that displays information about your Atom installation, which currently includes the current version, the license, and the Terms of Use.
+This package provides a cross-platform "About Pulsar" view that displays information about your Pulsar installation, which currently includes the current version, the license, and the Terms of Use.
 
 ## Contributing
 Always feel free to help out!  Whether it's filing bugs and feature requests
-or working on some of the open issues, Atom's [contributing guide](https://github.com/atom/atom/blob/master/CONTRIBUTING.md)
-will help get you started while the [guide for contributing to packages](https://github.com/atom/atom/blob/master/docs/contributing-to-packages.md)
+or working on some of the open issues, Pulsar's [contributing guide](https://github.com/pulsar-edit/.github/blob/main/CONTRIBUTING.md)
+will help get you started while the [guide for contributing to packages](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#contributing-to-packages)
 has some extra information.
-
-## License
-
-[MIT License](https://opensource.org/licenses/MIT) - see the [LICENSE](https://github.com/atom/about/blob/master/LICENSE.md) for more details.
diff --git a/packages/about/lib/components/about-view.js b/packages/about/lib/components/about-view.js
index 19a2182f3..939f5cec2 100644
--- a/packages/about/lib/components/about-view.js
+++ b/packages/about/lib/components/about-view.js
@@ -1,7 +1,7 @@
 const { Disposable } = require('atom');
 const etch = require('etch');
 const { shell } = require('electron');
-const AtomLogo = require('./atom-logo'); //Update to new Pulsar logo (L#83)
+const AtomLogo = require('./atom-logo');
 const EtchComponent = require('../etch-component');
 const UpdateView = require('./update-view');
 
@@ -46,6 +46,7 @@ module.exports = class AboutView extends EtchComponent {
   handleTermsOfUseClick(e) {
     e.preventDefault();
     shell.openExternal('https://atom.io/terms'); //If we use this then this URL will need updating but button disabled (L#182)
+    // TODO Update to Privacy Policy once `pulsar-edit.github.io` #161 is resolved
   }
 
   handleHowToUpdateClick(e) {
@@ -80,8 +81,7 @@ module.exports = class AboutView extends EtchComponent {
           { className: 'about-header' },
           $.a(
             { className: 'about-atom-io', href: `${atom.branding.urlWeb}`, },
-            //$(AtomLogo)
-            'Pulsar' //Remove and reinstate above line when available
+            $(AtomLogo)
           ),
           $.div(
             { className: 'about-header-info' },
@@ -224,4 +224,3 @@ module.exports = class AboutView extends EtchComponent {
     return 'info';
   }
 };
-
diff --git a/packages/about/lib/update-manager.js b/packages/about/lib/update-manager.js
index db4744dc0..5873e5e9a 100644
--- a/packages/about/lib/update-manager.js
+++ b/packages/about/lib/update-manager.js
@@ -125,7 +125,7 @@ let UpdateManager = class UpdateManager {
   getReleaseNotesURLForVersion(appVersion) {
     // Dev versions will not have a releases page
     if (appVersion.indexOf('dev') > -1) {
-      return 'https://atom.io/releases';
+      return 'https://pulsar-edit.dev/download.html';
     }
 
     if (!appVersion.startsWith('v')) {
diff --git a/packages/about/package-lock.json b/packages/about/package-lock.json
index 850b43601..c2c94d3ee 100644
--- a/packages/about/package-lock.json
+++ b/packages/about/package-lock.json
@@ -1,1806 +1,55 @@
 {
   "name": "about",
   "version": "1.9.1",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "acorn": {
-      "version": "5.7.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.1.tgz",
-      "integrity": "sha512-d+nbxBUGKg7Arpsvbnlq61mc12ek3EY8EQldM3GPAhWJ1UVxC6TDGbIvUMNU6obBX3i1+ptCIzV4vq0gFPEGVQ==",
-      "dev": true
-    },
-    "acorn-jsx": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
-      "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
-      "dev": true,
-      "requires": {
-        "acorn": "^3.0.4"
-      },
+  "packages": {
+    "": {
+      "name": "about",
+      "version": "1.9.1",
+      "license": "MIT",
       "dependencies": {
-        "acorn": {
-          "version": "3.3.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
-          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
-          "dev": true
-        }
-      }
-    },
-    "ajv": {
-      "version": "5.5.2",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
-      "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
-      "dev": true,
-      "requires": {
-        "co": "^4.6.0",
-        "fast-deep-equal": "^1.0.0",
-        "fast-json-stable-stringify": "^2.0.0",
-        "json-schema-traverse": "^0.3.0"
-      }
-    },
-    "ajv-keywords": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-2.1.1.tgz",
-      "integrity": "sha1-YXmX/F9gV2iUxDX5QNgZ4TW4B2I=",
-      "dev": true
-    },
-    "ansi-escapes": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.1.0.tgz",
-      "integrity": "sha512-UgAb8H9D41AQnu/PbWlCofQVcnV4Gs2bBJi9eZPxfU/hgglFh3SMDMENRIqdr7H6XFnXdoknctFByVsCOotTVw==",
-      "dev": true
-    },
-    "ansi-regex": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-      "dev": true
-    },
-    "ansi-styles": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
-      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
-      "dev": true
-    },
-    "argparse": {
-      "version": "1.0.10",
-      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
-      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
-      "dev": true,
-      "requires": {
-        "sprintf-js": "~1.0.2"
-      }
-    },
-    "array-includes": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.0.3.tgz",
-      "integrity": "sha1-GEtI9i2S10UrsxsyMWXH+L0CJm0=",
-      "dev": true,
-      "requires": {
-        "define-properties": "^1.1.2",
-        "es-abstract": "^1.7.0"
-      }
-    },
-    "array-union": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
-      "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
-      "dev": true,
-      "requires": {
-        "array-uniq": "^1.0.1"
-      }
-    },
-    "array-uniq": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
-      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY=",
-      "dev": true
-    },
-    "arrify": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz",
-      "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
-      "dev": true
-    },
-    "babel-code-frame": {
-      "version": "6.26.0",
-      "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
-      "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
-      "dev": true,
-      "requires": {
-        "chalk": "^1.1.3",
-        "esutils": "^2.0.2",
-        "js-tokens": "^3.0.2"
+        "etch": "^0.14.1",
+        "semver": "^7.3.8"
       },
-      "dependencies": {
-        "chalk": {
-          "version": "1.1.3",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
-          "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
-          "dev": true,
-          "requires": {
-            "ansi-styles": "^2.2.1",
-            "escape-string-regexp": "^1.0.2",
-            "has-ansi": "^2.0.0",
-            "strip-ansi": "^3.0.0",
-            "supports-color": "^2.0.0"
-          }
-        },
-        "strip-ansi": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
-          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^2.0.0"
-          }
-        }
+      "engines": {
+        "atom": ">=1.7 <2.0.0"
       }
     },
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
+    "node_modules/etch": {
+      "version": "0.14.1",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.14.1.tgz",
+      "integrity": "sha512-+IwqSDBhaQFMUHJu4L/ir0dhDoW5IIihg4Z9lzsIxxne8V0PlSg0gnk2STaKWjGJQnDR4cxpA+a/dORX9kycTA=="
     },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
-      }
-    },
-    "buffer-from": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
-      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
-      "dev": true
-    },
-    "builtin-modules": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-1.1.1.tgz",
-      "integrity": "sha1-Jw8HbFpywC9bZaR9+Uxf46J4iS8=",
-      "dev": true
-    },
-    "caller-path": {
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-      "resolved": "https://registry.npmjs.org/caller-path/-/caller-path-0.1.0.tgz",
-      "integrity": "sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=",
-      "dev": true,
-      "requires": {
-        "callsites": "^0.2.0"
-      }
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-    "callsites": {
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-      "resolved": "https://registry.npmjs.org/callsites/-/callsites-0.2.0.tgz",
-      "integrity": "sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=",
-      "dev": true
-    },
-    "chalk": {
-      "version": "2.4.1",
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-      "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
-      "dev": true,
-      "requires": {
-        "ansi-styles": "^3.2.1",
-        "escape-string-regexp": "^1.0.5",
-        "supports-color": "^5.3.0"
-      },
-      "dependencies": {
-        "ansi-styles": {
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-      "resolved": "https://registry.npmjs.org/shebang-regex/-/shebang-regex-1.0.0.tgz",
-      "integrity": "sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=",
-      "dev": true
-    },
-    "signal-exit": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
-      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
-      "dev": true
-    },
-    "slice-ansi": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-1.0.0.tgz",
-      "integrity": "sha512-POqxBK6Lb3q6s047D/XsDVNPnF9Dl8JSaqe9h9lURl0OdNqy/ujDrOiIHtsqXMGbWWTIomRzAMaTyawAU//Reg==",
-      "dev": true,
-      "requires": {
-        "is-fullwidth-code-point": "^2.0.0"
-      }
-    },
-    "spdx-correct": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.0.0.tgz",
-      "integrity": "sha512-N19o9z5cEyc8yQQPukRCZ9EUmb4HUpnrmaL/fxS2pBo2jbfcFRVuFZ/oFC+vZz0MNNk0h80iMn5/S6qGZOL5+g==",
-      "dev": true,
-      "requires": {
-        "spdx-expression-parse": "^3.0.0",
-        "spdx-license-ids": "^3.0.0"
-      }
-    },
-    "spdx-exceptions": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/spdx-exceptions/-/spdx-exceptions-2.1.0.tgz",
-      "integrity": "sha512-4K1NsmrlCU1JJgUrtgEeTVyfx8VaYea9J9LvARxhbHtVtohPs/gFGG5yy49beySjlIMhhXZ4QqujIZEfS4l6Cg==",
-      "dev": true
-    },
-    "spdx-expression-parse": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/spdx-expression-parse/-/spdx-expression-parse-3.0.0.tgz",
-      "integrity": "sha512-Yg6D3XpRD4kkOmTpdgbUiEJFKghJH03fiC1OPll5h/0sO6neh2jqRDVHOQ4o/LMea0tgCkbMgea5ip/e+MkWyg==",
-      "dev": true,
-      "requires": {
-        "spdx-exceptions": "^2.1.0",
-        "spdx-license-ids": "^3.0.0"
-      }
-    },
-    "spdx-license-ids": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.0.tgz",
-      "integrity": "sha512-2+EPwgbnmOIl8HjGBXXMd9NAu02vLjOO1nWw4kmeRDFyHn+M/ETfHxQUK0oXg8ctgVnl9t3rosNVsZ1jG61nDA==",
-      "dev": true
-    },
-    "sprintf-js": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
-      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
-      "dev": true
-    },
-    "standard": {
-      "version": "11.0.1",
-      "resolved": "https://registry.npmjs.org/standard/-/standard-11.0.1.tgz",
-      "integrity": "sha512-nu0jAcHiSc8H+gJCXeiziMVZNDYi8MuqrYJKxTgjP4xKXZMKm311boqQIzDrYI/ktosltxt2CbDjYQs9ANC8IA==",
-      "dev": true,
-      "requires": {
-        "eslint": "~4.18.0",
-        "eslint-config-standard": "11.0.0",
-        "eslint-config-standard-jsx": "5.0.0",
-        "eslint-plugin-import": "~2.9.0",
-        "eslint-plugin-node": "~6.0.0",
-        "eslint-plugin-promise": "~3.7.0",
-        "eslint-plugin-react": "~7.7.0",
-        "eslint-plugin-standard": "~3.0.1",
-        "standard-engine": "~8.0.0"
-      }
-    },
-    "standard-engine": {
-      "version": "8.0.1",
-      "resolved": "https://registry.npmjs.org/standard-engine/-/standard-engine-8.0.1.tgz",
-      "integrity": "sha512-LA531C3+nljom/XRvdW/hGPXwmilRkaRkENhO3FAGF1Vtq/WtCXzgmnc5S6vUHHsgv534MRy02C1ikMwZXC+tw==",
-      "dev": true,
-      "requires": {
-        "deglob": "^2.1.0",
-        "get-stdin": "^6.0.0",
-        "minimist": "^1.1.0",
-        "pkg-conf": "^2.0.0"
+      "bin": {
+        "semver": "bin/semver.js"
       },
-      "dependencies": {
-        "minimist": {
-          "version": "1.2.0",
-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-          "dev": true
-        }
+      "engines": {
+        "node": ">=10"
       }
     },
-    "string-width": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
-      "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
-      "dev": true,
-      "requires": {
-        "is-fullwidth-code-point": "^2.0.0",
-        "strip-ansi": "^4.0.0"
-      }
-    },
-    "string_decoder": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-      "dev": true,
-      "requires": {
-        "safe-buffer": "~5.1.0"
-      }
-    },
-    "strip-ansi": {
+    "node_modules/yallist": {
       "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
-      "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
-      "dev": true,
-      "requires": {
-        "ansi-regex": "^3.0.0"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
-          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
-          "dev": true
-        }
-      }
-    },
-    "strip-bom": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-3.0.0.tgz",
-      "integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
-      "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
-      "dev": true
-    },
-    "supports-color": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
-      "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
-      "dev": true
-    },
-    "table": {
-      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/table/-/table-4.0.2.tgz",
-      "integrity": "sha512-UUkEAPdSGxtRpiV9ozJ5cMTtYiqz7Ni1OGqLXRCynrvzdtR1p+cfOWe2RJLwvUG8hNanaSRjecIqwOjqeatDsA==",
-      "dev": true,
-      "requires": {
-        "ajv": "^5.2.3",
-        "ajv-keywords": "^2.1.0",
-        "chalk": "^2.1.0",
-        "lodash": "^4.17.4",
-        "slice-ansi": "1.0.0",
-        "string-width": "^2.1.1"
-      }
-    },
-    "text-table": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
-      "integrity": "sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=",
-      "dev": true
-    },
-    "through": {
-      "version": "2.3.8",
-      "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
-      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
-      "dev": true
-    },
-    "tmp": {
-      "version": "0.0.33",
-      "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz",
-      "integrity": "sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==",
-      "dev": true,
-      "requires": {
-        "os-tmpdir": "~1.0.2"
-      }
-    },
-    "type-check": {
-      "version": "0.3.2",
-      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
-      "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
-      "dev": true,
-      "requires": {
-        "prelude-ls": "~1.1.2"
-      }
-    },
-    "typedarray": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
-      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
-      "dev": true
-    },
-    "uniq": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/uniq/-/uniq-1.0.1.tgz",
-      "integrity": "sha1-sxxa6CVIRKOoKBVBzisEuGWnNP8=",
-      "dev": true
-    },
-    "util-deprecate": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
-      "dev": true
-    },
-    "validate-npm-package-license": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
-      "integrity": "sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==",
-      "dev": true,
-      "requires": {
-        "spdx-correct": "^3.0.0",
-        "spdx-expression-parse": "^3.0.0"
-      }
-    },
-    "which": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
-      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
-      "dev": true,
-      "requires": {
-        "isexe": "^2.0.0"
-      }
-    },
-    "wordwrap": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
-      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
-    },
-    "write": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/write/-/write-0.2.1.tgz",
-      "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
-      "dev": true,
-      "requires": {
-        "mkdirp": "^0.5.1"
-      }
-    },
-    "xtend": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
-      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
-      "dev": true
-    },
-    "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
-      "dev": true
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
     }
   }
 }
diff --git a/packages/about/package.json b/packages/about/package.json
index 547da2e9d..73bc5dc7c 100644
--- a/packages/about/package.json
+++ b/packages/about/package.json
@@ -10,8 +10,8 @@
     "atom": ">=1.7 <2.0.0"
   },
   "dependencies": {
-    "etch": "0.9.0",
-    "semver": "^5.5.0"
+    "etch": "^0.14.1",
+    "semver": "^7.3.8"
   },
   "consumedServices": {
     "status-bar": {
diff --git a/packages/about/spec/about-spec.js b/packages/about/spec/about-spec.js
index de8c8d5b0..43dd5793f 100644
--- a/packages/about/spec/about-spec.js
+++ b/packages/about/spec/about-spec.js
@@ -25,7 +25,7 @@ describe('About', () => {
   });
 
   describe('when the about:about-atom command is triggered', () => {
-    it('shows the About Atom view', async () => {
+    it('shows the About Pulsar view', async () => {
       // Attaching the workspaceElement to the DOM is required to allow the
       // `toBeVisible()` matchers to work. Anything testing visibility or focus
       // requires that the workspaceElement is on the DOM. Tests that attach the
@@ -40,7 +40,7 @@ describe('About', () => {
     });
   });
 
-  describe('when the Atom version number is clicked', () => {
+  describe('when the Pulsar version number is clicked', () => {
     it('copies the version number to the clipboard', async () => {
       await atom.workspace.open('atom://about');
       jasmine.attachToDOM(workspaceElement);
diff --git a/packages/about/spec/about-status-bar-spec.js b/packages/about/spec/about-status-bar-spec.js
index 7cc7bc6ba..b5ecf5f72 100644
--- a/packages/about/spec/about-status-bar-spec.js
+++ b/packages/about/spec/about-status-bar-spec.js
@@ -60,7 +60,7 @@ describe('the status bar', () => {
         });
       });
 
-      it('continues to show the squirrel until Atom is updated to the new version', async () => {
+      it('continues to show the squirrel until Pulsar is updated to the new version', async () => {
         MockUpdater.finishDownloadingUpdate('42.0.0');
         expect(workspaceElement).toContain('.about-release-notes');
 
@@ -81,7 +81,7 @@ describe('the status bar', () => {
         expect(workspaceElement).not.toContain('.about-release-notes');
       });
 
-      it('does not show the view if Atom is updated to a newer version than notified', async () => {
+      it('does not show the view if Pulsar is updated to a newer version than notified', async () => {
         MockUpdater.finishDownloadingUpdate('42.0.0');
 
         await atom.packages.deactivatePackage('about');
@@ -125,7 +125,7 @@ describe('the status bar', () => {
         });
       });
 
-      it('continues to show the squirrel until Atom is updated to the new version', async () => {
+      it('continues to show the squirrel until Pulsar is updated to the new version', async () => {
         MockUpdater.finishDownloadingUpdate('42.0.0');
         expect(workspaceElement).toContain('.about-release-notes');
 
@@ -146,7 +146,7 @@ describe('the status bar', () => {
         expect(workspaceElement).not.toContain('.about-release-notes');
       });
 
-      it('does not show the view if Atom is updated to a newer version than notified', async () => {
+      it('does not show the view if Pulsar is updated to a newer version than notified', async () => {
         MockUpdater.finishDownloadingUpdate('42.0.0');
 
         await atom.packages.deactivatePackage('about');
diff --git a/packages/about/spec/update-manager-spec.js b/packages/about/spec/update-manager-spec.js
index 12c9a7611..df8d6ace9 100644
--- a/packages/about/spec/update-manager-spec.js
+++ b/packages/about/spec/update-manager-spec.js
@@ -8,26 +8,27 @@ describe('UpdateManager', () => {
   });
 
   describe('::getReleaseNotesURLForVersion', () => {
-    it('returns atom.io releases when dev version', () => {
+    it('returns pulsar-edit download page when dev version', () => {
       expect(
         updateManager.getReleaseNotesURLForVersion('1.7.0-dev-e44b57d')
-      ).toContain('atom.io/releases');
+      ).toContain('pulsar-edit.dev/download');
     });
 
     it('returns the page for the release when not a dev version', () => {
-      expect(updateManager.getReleaseNotesURLForVersion('1.7.0')).toContain(
-        'atom-ide-community/atom/releases/tag/v1.7.0'
+      expect(updateManager.getReleaseNotesURLForVersion('1.100.0')).toContain(
+        'pulsar-edit/pulsar/releases/tag/v1.100.0'
       );
-      expect(updateManager.getReleaseNotesURLForVersion('v1.7.0')).toContain(
-        'atom-ide-community/atom/releases/tag/v1.7.0'
+      expect(updateManager.getReleaseNotesURLForVersion('v1.100.0')).toContain(
+        'pulsar-edit/pulsar/releases/tag/v1.100.0'
       );
+      // TODO: Since we no longer follow release channels, is it useful to continue testing their state?
       expect(
-        updateManager.getReleaseNotesURLForVersion('1.7.0-beta10')
-      ).toContain('atom-ide-community/atom/releases/tag/v1.7.0-beta10');
+        updateManager.getReleaseNotesURLForVersion('1.100.0-beta10')
+      ).toContain('pulsar-edit/pulsar/releases/tag/v1.100.0-beta10');
       expect(
-        updateManager.getReleaseNotesURLForVersion('1.7.0-nightly10')
+        updateManager.getReleaseNotesURLForVersion('1.100.0-nightly10')
       ).toContain(
-        'atom-ide-community/atom-nightly-releases/releases/tag/v1.7.0-nightly10'
+        'pulsar-edit/pulsar-nightly-releases/releases/tag/v1.100.0-nightly10'
       );
     });
   });
diff --git a/packages/about/spec/update-view-spec.js b/packages/about/spec/update-view-spec.js
index 09bd7a9ad..a50203ab0 100644
--- a/packages/about/spec/update-view-spec.js
+++ b/packages/about/spec/update-view-spec.js
@@ -61,7 +61,7 @@ describe('UpdateView', () => {
 
         let args = shell.openExternal.mostRecentCall.args;
         expect(shell.openExternal).toHaveBeenCalled();
-        expect(args[0]).toContain('installing-atom');
+        expect(args[0]).toContain('installing-pulsar');
       });
     });
 
@@ -241,120 +241,120 @@ describe('UpdateView', () => {
         ).toBe('Check now');
       });
 
-      describe('when core.automaticallyUpdate is toggled', () => {
-        beforeEach(async () => {
-          expect(atom.config.get('core.automaticallyUpdate')).toBe(true);
-          atom.autoUpdater.checkForUpdate.reset();
-        });
-
-        it('shows the auto update UI', async () => {
-          expect(
-            aboutElement.querySelector('.about-auto-updates input').checked
-          ).toBe(true);
-          expect(
-            aboutElement.querySelector('.about-default-update-message')
-          ).toBeVisible();
-          expect(
-            aboutElement.querySelector('.about-default-update-message')
-              .textContent
-          ).toBe('Pulsar will check for updates automatically');
-
-          atom.config.set('core.automaticallyUpdate', false);
-          await scheduler.getNextUpdatePromise();
-
-          expect(
-            aboutElement.querySelector('.about-auto-updates input').checked
-          ).toBe(false);
-          expect(
-            aboutElement.querySelector('.about-default-update-message')
-          ).toBeVisible();
-          expect(
-            aboutElement.querySelector('.about-default-update-message')
-              .textContent
-          ).toBe('Automatic updates are disabled please check manually');
-        });
-
-        it('updates config and the UI when the checkbox is used to toggle', async () => {
-          expect(
-            aboutElement.querySelector('.about-auto-updates input').checked
-          ).toBe(true);
-
-          aboutElement.querySelector('.about-auto-updates input').click();
-          await scheduler.getNextUpdatePromise();
-
-          expect(atom.config.get('core.automaticallyUpdate')).toBe(false);
-          expect(
-            aboutElement.querySelector('.about-auto-updates input').checked
-          ).toBe(false);
-          expect(
-            aboutElement.querySelector('.about-default-update-message')
-          ).toBeVisible();
-          expect(
-            aboutElement.querySelector('.about-default-update-message')
-              .textContent
-          ).toBe('Automatic updates are disabled please check manually');
-
-          aboutElement.querySelector('.about-auto-updates input').click();
-          await scheduler.getNextUpdatePromise();
-
-          expect(atom.config.get('core.automaticallyUpdate')).toBe(true);
-          expect(
-            aboutElement.querySelector('.about-auto-updates input').checked
-          ).toBe(true);
-          expect(
-            aboutElement.querySelector('.about-default-update-message')
-          ).toBeVisible();
-          expect(
-            aboutElement.querySelector('.about-default-update-message')
-              .textContent
-          ).toBe('Pulsar will check for updates automatically');
-        });
-
-        describe('checking for updates', function() {
-          afterEach(() => {
-            this.updateView = null;
-          });
-
-          it('checks for update when the about page is shown', () => {
-            expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
-
-            this.updateView = new UpdateView({
-              updateManager: updateManager,
-              availableVersion: '9999.0.0',
-              viewUpdateReleaseNotes: () => {}
-            });
-
-            expect(atom.autoUpdater.checkForUpdate).toHaveBeenCalled();
-          });
-
-          it('does not check for update when the about page is shown and the update manager is not in the idle state', () => {
-            atom.autoUpdater.getState.andReturn('downloading');
-            updateManager.resetState();
-            expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
-
-            this.updateView = new UpdateView({
-              updateManager: updateManager,
-              availableVersion: '9999.0.0',
-              viewUpdateReleaseNotes: () => {}
-            });
-
-            expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
-          });
-
-          it('does not check for update when the about page is shown and auto updates are turned off', () => {
-            atom.config.set('core.automaticallyUpdate', false);
-            expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
-
-            this.updateView = new UpdateView({
-              updateManager: updateManager,
-              availableVersion: '9999.0.0',
-              viewUpdateReleaseNotes: () => {}
-            });
-
-            expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
-          });
-        });
-      });
+      // describe('when core.automaticallyUpdate is toggled', () => {
+      //   beforeEach(async () => {
+      //     expect(atom.config.get('core.automaticallyUpdate')).toBe(true);
+      //     atom.autoUpdater.checkForUpdate.reset();
+      //   });
+      //
+      //   it('shows the auto update UI', async () => {
+      //     expect(
+      //       aboutElement.querySelector('.about-auto-updates input').checked
+      //     ).toBe(true);
+      //     expect(
+      //       aboutElement.querySelector('.about-default-update-message')
+      //     ).toBeVisible();
+      //     expect(
+      //       aboutElement.querySelector('.about-default-update-message')
+      //         .textContent
+      //     ).toBe('Pulsar will check for updates automatically');
+      //
+      //     atom.config.set('core.automaticallyUpdate', false);
+      //     await scheduler.getNextUpdatePromise();
+      //
+      //     expect(
+      //       aboutElement.querySelector('.about-auto-updates input').checked
+      //     ).toBe(false);
+      //     expect(
+      //       aboutElement.querySelector('.about-default-update-message')
+      //     ).toBeVisible();
+      //     expect(
+      //       aboutElement.querySelector('.about-default-update-message')
+      //         .textContent
+      //     ).toBe('Automatic updates are disabled please check manually');
+      //   });
+      //
+      //   it('updates config and the UI when the checkbox is used to toggle', async () => {
+      //     expect(
+      //       aboutElement.querySelector('.about-auto-updates input').checked
+      //     ).toBe(true);
+      //
+      //     aboutElement.querySelector('.about-auto-updates input').click();
+      //     await scheduler.getNextUpdatePromise();
+      //
+      //     expect(atom.config.get('core.automaticallyUpdate')).toBe(false);
+      //     expect(
+      //       aboutElement.querySelector('.about-auto-updates input').checked
+      //     ).toBe(false);
+      //     expect(
+      //       aboutElement.querySelector('.about-default-update-message')
+      //     ).toBeVisible();
+      //     expect(
+      //       aboutElement.querySelector('.about-default-update-message')
+      //         .textContent
+      //     ).toBe('Automatic updates are disabled please check manually');
+      //
+      //     aboutElement.querySelector('.about-auto-updates input').click();
+      //     await scheduler.getNextUpdatePromise();
+      //
+      //     expect(atom.config.get('core.automaticallyUpdate')).toBe(true);
+      //     expect(
+      //       aboutElement.querySelector('.about-auto-updates input').checked
+      //     ).toBe(true);
+      //     expect(
+      //       aboutElement.querySelector('.about-default-update-message')
+      //     ).toBeVisible();
+      //     expect(
+      //       aboutElement.querySelector('.about-default-update-message')
+      //         .textContent
+      //     ).toBe('Pulsar will check for updates automatically');
+      //   });
+      //
+      //   describe('checking for updates', function() {
+      //     afterEach(() => {
+      //       this.updateView = null;
+      //     });
+      //
+      //     it('checks for update when the about page is shown', () => {
+      //       expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
+      //
+      //       this.updateView = new UpdateView({
+      //         updateManager: updateManager,
+      //         availableVersion: '9999.0.0',
+      //         viewUpdateReleaseNotes: () => {}
+      //       });
+      //
+      //       expect(atom.autoUpdater.checkForUpdate).toHaveBeenCalled();
+      //     });
+      //
+      //     it('does not check for update when the about page is shown and the update manager is not in the idle state', () => {
+      //       atom.autoUpdater.getState.andReturn('downloading');
+      //       updateManager.resetState();
+      //       expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
+      //
+      //       this.updateView = new UpdateView({
+      //         updateManager: updateManager,
+      //         availableVersion: '9999.0.0',
+      //         viewUpdateReleaseNotes: () => {}
+      //       });
+      //
+      //       expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
+      //     });
+      //
+      //     it('does not check for update when the about page is shown and auto updates are turned off', () => {
+      //       atom.config.set('core.automaticallyUpdate', false);
+      //       expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
+      //
+      //       this.updateView = new UpdateView({
+      //         updateManager: updateManager,
+      //         availableVersion: '9999.0.0',
+      //         viewUpdateReleaseNotes: () => {}
+      //       });
+      //
+      //       expect(atom.autoUpdater.checkForUpdate).not.toHaveBeenCalled();
+      //     });
+      //   });
+      // });
     });
   });
 
diff --git a/packages/archive-view/README.md b/packages/archive-view/README.md
new file mode 100644
index 000000000..f2c53c338
--- /dev/null
+++ b/packages/archive-view/README.md
@@ -0,0 +1,20 @@
+# Archive view package
+
+Adds support for browsing archive files in Pulsar with the following extensions:
+
+* `.egg`
+* `.epub`
+* `.jar`
+* `.love`
+* `.nupkg`
+* `.tar`
+* `.tar.gz`
+* `.tgz`
+* `.war`
+* `.whl`
+* `.xpi`
+* `.zip`
+
+Select a file to extract it to a temp file and open it in a new editor.
+
+![](./resources/preview.png)
diff --git a/packages/archive-view/keymaps/archive-view.cson b/packages/archive-view/keymaps/archive-view.cson
new file mode 100644
index 000000000..cd17eea1b
--- /dev/null
+++ b/packages/archive-view/keymaps/archive-view.cson
@@ -0,0 +1,3 @@
+'.archive-editor':
+  'k': 'core:move-up'
+  'j': 'core:move-down'
diff --git a/packages/archive-view/lib/archive-editor-view.js b/packages/archive-view/lib/archive-editor-view.js
new file mode 100644
index 000000000..6e49ab5a0
--- /dev/null
+++ b/packages/archive-view/lib/archive-editor-view.js
@@ -0,0 +1,208 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import fs from 'fs'
+import humanize from 'humanize-plus'
+import archive from 'ls-archive'
+import {CompositeDisposable, Disposable, Emitter, File} from 'atom'
+import etch from 'etch'
+
+import FileView from './file-view'
+import DirectoryView from './directory-view'
+
+export default class ArchiveEditorView {
+  constructor (archivePath) {
+    this.disposables = new CompositeDisposable()
+    this.emitter = new Emitter()
+    this.path = archivePath
+    this.file = new File(this.path)
+    this.entries = []
+    etch.initialize(this)
+
+    this.refresh()
+
+    this.disposables.add(this.file.onDidChange(() => this.refresh()))
+    this.disposables.add(this.file.onDidRename(() => this.refresh()))
+    this.disposables.add(this.file.onDidDelete(() => this.destroy()))
+
+    const focusHandler = () => this.focusSelectedFile()
+
+    this.element.addEventListener('focus', focusHandler)
+    this.disposables.add(new Disposable(() => this.element.removeEventListener('focus', focusHandler)))
+  }
+
+  update () {}
+
+  render () {
+    return (
+      <div className='archive-editor' tabIndex='-1'>
+        <div className='archive-container'>
+          <div ref='loadingMessage' className='padded icon icon-hourglass text-info'>{`Loading archive\u2026`}</div>
+          <div ref='errorMessage' className='padded icon icon-alert text-error' />
+          <div className='inset-panel'>
+            <div ref='summary' className='panel-heading' />
+            <ol ref='tree' className='archive-tree padded list-tree has-collapsable-children' />
+          </div>
+        </div>
+      </div>
+    )
+  }
+
+  copy () {
+    return new ArchiveEditorView(this.path)
+  }
+
+  destroy () {
+    while (this.entries.length > 0) {
+      this.entries.pop().destroy()
+    }
+    this.disposables.dispose()
+    this.emitter.emit('did-destroy')
+    etch.destroy(this)
+  }
+
+  onDidDestroy (callback) {
+    return this.emitter.on('did-destroy', callback)
+  }
+
+  onDidChangeTitle (callback) {
+    return this.emitter.on('did-change-title', callback)
+  }
+
+  serialize () {
+    return {
+      deserializer: this.constructor.name,
+      path: this.path
+    }
+  }
+
+  getPath () {
+    return this.file.getPath()
+  }
+
+  getTitle () {
+    return this.path ? this.file.getBaseName() : 'untitled'
+  }
+
+  getURI () {
+    return this.path
+  }
+
+  refresh () {
+    this.refs.summary.style.display = 'none'
+    this.refs.tree.style.display = 'none'
+    this.refs.loadingMessage.style.display = ''
+    this.refs.errorMessage.style.display = 'none'
+
+    if (this.path !== this.getPath()) {
+      this.path = this.getPath()
+      this.emitter.emit('did-change-title')
+    }
+
+    const originalPath = this.path
+    archive.list(this.path, {tree: true}, (error, entries) => {
+      if (originalPath !== this.path) {
+        return
+      }
+
+      if (error != null) {
+        let message = 'Reading the archive file failed'
+        if (error.message) {
+          message += `: ${error.message}`
+        }
+        this.refs.errorMessage.style.display = ''
+        this.refs.errorMessage.textContent = message
+      } else {
+        this.createTreeEntries(entries)
+        this.updateSummary()
+      }
+
+      // We hide the loading message _after_ creating the archive tree
+      // to avoid forced reflows.
+      this.refs.loadingMessage.style.display = 'none'
+    })
+  }
+
+  createTreeEntries (entries) {
+    while (this.entries.length > 0) {
+      this.entries.pop().destroy()
+    }
+
+    let index = 0
+    for (const entry of entries) {
+      if (entry.isDirectory()) {
+        const entryView = new DirectoryView(this, index, this.path, entry)
+        this.entries.push(entryView)
+      } else {
+        const entryView = new FileView(this, index, this.path, entry)
+        this.entries.push(entryView)
+      }
+      index++
+    }
+
+    this.selectFileAfterIndex(-1)
+
+    // Wait until selecting (focusing) the first file before appending the entries
+    // to avoid a double-forced reflow when focusing.
+    for (const entry of this.entries) {
+      this.refs.tree.appendChild(entry.element)
+    }
+
+    this.refs.tree.style.display = ''
+  }
+
+  updateSummary () {
+    const fileCount = this.entries.filter((entry) => entry instanceof FileView).length
+    const fileLabel = fileCount === 1 ? '1 file' : `${humanize.intComma(fileCount)} files`
+
+    const directoryCount = this.entries.filter((entry) => entry instanceof DirectoryView).length
+    const directoryLabel = directoryCount === 1 ? '1 folder' : `${humanize.intComma(directoryCount)} folders`
+
+    this.refs.summary.style.display = ''
+    let fileSize
+    try {
+      fileSize = fs.statSync(this.path)?.size;
+    } catch (e) {}
+    if (fileSize == null) fileSize = -1
+    this.refs.summary.textContent = `${humanize.fileSize(fileSize)} with ${fileLabel} and ${directoryLabel}`
+  }
+
+  focusSelectedFile () {
+    const selectedFile = this.refs.tree.querySelector('.selected')
+    if (selectedFile) {
+      selectedFile.focus()
+    }
+  }
+
+  selectFileBeforeIndex (index) {
+    for (let i = index - 1; i >= 0; i--) {
+      const previousEntry = this.entries[i]
+      if (previousEntry instanceof FileView) {
+        previousEntry.select()
+        break
+      } else {
+        if (previousEntry.selectLastFile()) {
+          break
+        }
+      }
+    }
+  }
+
+  selectFileAfterIndex (index) {
+    for (let i = index + 1; i < this.entries.length; i++) {
+      const nextEntry = this.entries[i]
+      if (nextEntry instanceof FileView) {
+        nextEntry.select()
+        break
+      } else {
+        if (nextEntry.selectFirstFile()) {
+          break
+        }
+      }
+    }
+  }
+
+  focus () {
+    this.focusSelectedFile()
+  }
+}
diff --git a/packages/archive-view/lib/archive-editor.js b/packages/archive-view/lib/archive-editor.js
new file mode 100644
index 000000000..3ca0a2074
--- /dev/null
+++ b/packages/archive-view/lib/archive-editor.js
@@ -0,0 +1,74 @@
+const fs = require('fs')
+const path = require('path')
+const {Disposable} = require('atom')
+
+const getIconServices = require('./get-icon-services')
+const ArchiveEditorView = require('./archive-editor-view')
+
+module.exports = {
+  activate () {
+    this.disposable = atom.workspace.addOpener((filePath = '') => {
+      // Check that filePath exists before opening, in case a remote URI was given
+      if (!isPathSupported(filePath)) return;
+      let isFile = false
+      try {
+        isFile = fs.statSync(filePath)?.isFile()
+      } catch (e) {}
+      if (isFile) {
+        return new ArchiveEditorView(filePath)
+      }
+    })
+  },
+
+  deactivate () {
+    this.disposable.dispose()
+    for (const item of atom.workspace.getPaneItems()) {
+      if (item instanceof ArchiveEditorView) {
+        item.destroy()
+      }
+    }
+  },
+
+  consumeElementIcons (service) {
+    getIconServices().setElementIcons(service)
+    return new Disposable(() => getIconServices().resetElementIcons())
+  },
+
+  consumeFileIcons (service) {
+    getIconServices().setFileIcons(service)
+    return new Disposable(() => getIconServices().resetFileIcons())
+  },
+
+  deserialize (params = {}) {
+    let isFile = false
+    try {
+      isFile = fs.statSync(params.path)?.isFile()
+    } catch (e) {}
+    if (isFile) {
+      return new ArchiveEditorView(params.path)
+    } else {
+      console.warn(`Can't build ArchiveEditorView for path "${params.path}"; file no longer exists`)
+    }
+  }
+}
+
+function isPathSupported (filePath) {
+  switch (path.extname(filePath)) {
+    case '.egg':
+    case '.epub':
+    case '.jar':
+    case '.love':
+    case '.nupkg':
+    case '.tar':
+    case '.tgz':
+    case '.war':
+    case '.whl':
+    case '.xpi':
+    case '.zip':
+      return true
+    case '.gz':
+      return path.extname(path.basename(filePath, '.gz')) === '.tar'
+    default:
+      return false
+  }
+}
diff --git a/packages/archive-view/lib/default-file-icons.js b/packages/archive-view/lib/default-file-icons.js
new file mode 100644
index 000000000..418270493
--- /dev/null
+++ b/packages/archive-view/lib/default-file-icons.js
@@ -0,0 +1,36 @@
+const fs = require('fs')
+const path = require('path')
+
+class DefaultFileIcons {
+  iconClassForPath (filePath) {
+    const extension = path.extname(filePath).toLowerCase()
+    const base = path.basename(filePath, extension).toLowerCase();
+
+    let isSymbolicLinkSync = false
+    try {
+      fs.lstatSync(filePath)?.isSymbolicLink();
+    } catch (e) {}
+    if (isSymbolicLinkSync) return 'icon-file-symlink-file'
+
+    if (base === 'readme' && ['','.markdown','.md','.mdown','.mkd','.mkdown','.rmd','.ron'].includes(extension)) {
+      return 'icon-book'
+    }
+
+    if (['.bz2','.egg','.epub','.gem','.gz','.jar','.lz','.lzma','.lzo','.rar','.tar','.tgz','.war','.whl','.xpi','.xz','.z','.zip'].includes(extension)) {
+      return 'icon-file-zip'
+    }
+
+    if (['.gif','.ico','.jpeg','.jpg','.png','.tif','.tiff','.webp'].includes(extension)) {
+      return 'icon-file-media'
+    }
+
+    if (extension === ".pdf") return 'icon-file-pdf'
+
+    if (['.ds_store','.a','.exe','.o','.pyc','.pyo','.so','.woff'].includes(extension)) {
+      return 'icon-file-binary'
+    }
+    return 'icon-file-text'
+  }
+}
+
+module.exports = new DefaultFileIcons()
diff --git a/packages/archive-view/lib/directory-view.js b/packages/archive-view/lib/directory-view.js
new file mode 100644
index 000000000..df25c1844
--- /dev/null
+++ b/packages/archive-view/lib/directory-view.js
@@ -0,0 +1,132 @@
+/** @babel */
+
+import {CompositeDisposable, Disposable} from 'atom'
+
+import FileView from './file-view'
+import getIconServices from './get-icon-services'
+
+export default class DirectoryView {
+  constructor (parentView, indexInParentView, archivePath, entry) {
+    this.disposables = new CompositeDisposable()
+    this.entries = []
+    this.parentView = parentView
+    this.indexInParentView = indexInParentView
+    this.element = document.createElement('li')
+    this.element.classList.add('list-nested-item', 'entry')
+
+    const listItem = document.createElement('span')
+    listItem.classList.add('list-item')
+
+    const clickHandler = (event) => {
+      event.stopPropagation()
+      event.preventDefault()
+      this.element.classList.toggle('collapsed')
+    }
+    listItem.addEventListener('click', clickHandler)
+    this.disposables.add(new Disposable(() => { listItem.removeEventListener('click', clickHandler) }))
+
+    const entrySpan = document.createElement('span')
+    entrySpan.textContent = entry.getName()
+    listItem.appendChild(entrySpan)
+    this.element.appendChild(listItem)
+
+    this.entry = entry
+    this.entrySpan = entrySpan
+    getIconServices().updateDirectoryIcon(this)
+
+    this.entriesTree = document.createElement('ol')
+    this.entriesTree.classList.add('list-tree')
+    let index = 0
+    for (const child of entry.children) {
+      if (child.isDirectory()) {
+        const entryView = new DirectoryView(this, index, archivePath, child)
+        this.entries.push(entryView)
+        this.entriesTree.appendChild(entryView.element)
+      } else {
+        const entryView = new FileView(this, index, archivePath, child)
+        this.entries.push(entryView)
+        this.entriesTree.appendChild(entryView.element)
+      }
+
+      index++
+    }
+    this.element.appendChild(this.entriesTree)
+  }
+
+  destroy () {
+    if (this.iconDisposable) {
+      this.iconDisposable.dispose()
+      this.iconDisposable = null
+    }
+
+    while (this.entries.length > 0) {
+      this.entries.pop().destroy()
+    }
+
+    this.disposables.dispose()
+    this.element.remove()
+  }
+
+  selectFileBeforeIndex (index) {
+    for (let i = index - 1; i >= 0; i--) {
+      const previousEntry = this.entries[i]
+      if (previousEntry instanceof FileView) {
+        previousEntry.select()
+        return
+      } else {
+        if (previousEntry.selectLastFile()) {
+          return
+        }
+      }
+    }
+
+    this.parentView.selectFileBeforeIndex(this.indexInParentView)
+  }
+
+  selectFileAfterIndex (index) {
+    for (let i = index + 1; i < this.entries.length; i++) {
+      const nextEntry = this.entries[i]
+      if (nextEntry instanceof FileView) {
+        nextEntry.select()
+        return
+      } else {
+        if (nextEntry.selectFirstFile()) {
+          return
+        }
+      }
+    }
+
+    this.parentView.selectFileAfterIndex(this.indexInParentView)
+  }
+
+  selectFirstFile () {
+    for (const entry of this.entries) {
+      if (entry instanceof FileView) {
+        entry.select()
+        return true
+      } else {
+        if (entry.selectFirstFile()) {
+          return true
+        }
+      }
+    }
+
+    return false
+  }
+
+  selectLastFile () {
+    for (var i = this.entries.length - 1; i >= 0; i--) {
+      const entry = this.entries[i]
+      if (entry instanceof FileView) {
+        entry.select()
+        return true
+      } else {
+        if (entry.selectLastFile()) {
+          return true
+        }
+      }
+    }
+
+    return false
+  }
+}
diff --git a/packages/archive-view/lib/file-view.js b/packages/archive-view/lib/file-view.js
new file mode 100644
index 000000000..5465148d3
--- /dev/null
+++ b/packages/archive-view/lib/file-view.js
@@ -0,0 +1,112 @@
+/** @babel */
+
+import {CompositeDisposable, Disposable} from 'atom'
+import path from 'path'
+import fs from 'fs'
+import temp from 'temp'
+import archive from 'ls-archive'
+
+import getIconServices from './get-icon-services'
+
+export default class FileView {
+  constructor (parentView, indexInParentView, archivePath, entry) {
+    this.disposables = new CompositeDisposable()
+    this.parentView = parentView
+    this.indexInParentView = indexInParentView
+    this.archivePath = archivePath
+    this.entry = entry
+
+    this.element = document.createElement('li')
+    this.element.classList.add('list-item', 'entry')
+    this.element.tabIndex = -1
+
+    this.name = document.createElement('span')
+    getIconServices().updateFileIcon(this)
+    this.name.textContent = this.entry.getName()
+    this.element.appendChild(this.name)
+
+    const clickHandler = () => {
+      this.select()
+      this.openFile()
+    }
+    this.element.addEventListener('click', clickHandler)
+    this.disposables.add(new Disposable(() => { this.element.removeEventListener('click', clickHandler) }))
+
+    this.disposables.add(atom.commands.add(this.element, {
+      'core:confirm': () => {
+        if (this.isSelected()) {
+          this.openFile()
+        }
+      },
+
+      'core:move-down': () => {
+        if (this.isSelected()) {
+          this.parentView.selectFileAfterIndex(this.indexInParentView)
+        }
+      },
+
+      'core:move-up': () => {
+        if (this.isSelected()) {
+          this.parentView.selectFileBeforeIndex(this.indexInParentView)
+        }
+      }
+    }))
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    this.element.remove()
+  }
+
+  isSelected () {
+    return this.element.classList.contains('selected')
+  }
+
+  logError (message, error) {
+    console.error(message, error.stack != null ? error.stack : error)
+  }
+
+  openFile () {
+    archive.readFile(this.archivePath, this.entry.getPath(), (error, contents) => {
+      if (error != null) {
+        this.logError(`Error reading: ${this.entry.getPath()} from ${this.archivePath}`, error)
+      } else {
+        temp.mkdir('atom-', (error, tempDirPath) => {
+          if (error != null) {
+            this.logError(`Error creating temp directory: ${tempDirPath}`, error)
+          } else {
+            const tempArchiveDirPath = path.join(tempDirPath, path.basename(this.archivePath))
+            fs.mkdir(tempArchiveDirPath, {recursive:true}, error => {
+              if (error != null) {
+                this.logError(`Error creating archive directory ${tempArchiveDirPath}`, error)
+              } else {
+                const tempFilePath = path.join(tempArchiveDirPath, this.entry.getName())
+                fs.writeFile(tempFilePath, contents, error => {
+                  if (error != null) {
+                    this.logError(`Error writing to ${tempFilePath}`, error)
+                  } else {
+                    atom.workspace.open(tempFilePath)
+                  }
+                })
+              }
+            })
+          }
+        })
+      }
+    })
+  }
+
+  select () {
+    this.element.focus()
+
+    const archiveEditorElement = this.element.closest('.archive-editor')
+    // On initial tree creation, it is not possible for any entries to be selected
+    // (The entries also haven't been added to the DOM yet)
+    if (archiveEditorElement) {
+      for (const selected of archiveEditorElement.querySelectorAll('.selected')) {
+        selected.classList.remove('selected')
+      }
+    }
+    this.element.classList.add('selected')
+  }
+}
diff --git a/packages/archive-view/lib/get-icon-services.js b/packages/archive-view/lib/get-icon-services.js
new file mode 100644
index 000000000..3e7bff010
--- /dev/null
+++ b/packages/archive-view/lib/get-icon-services.js
@@ -0,0 +1,72 @@
+const DefaultFileIcons = require('./default-file-icons')
+const {Emitter, CompositeDisposable} = require('atom')
+const path = require('path')
+
+let iconServices
+module.exports = function getIconServices () {
+  if (!iconServices) iconServices = new IconServices()
+  return iconServices
+}
+
+class IconServices {
+  constructor () {
+    this.emitter = new Emitter()
+    this.elementIcons = null
+    this.elementIconDisposables = new CompositeDisposable()
+    this.fileIcons = DefaultFileIcons
+  }
+
+  onDidChange (callback) {
+    return this.emitter.on('did-change', callback)
+  }
+
+  resetElementIcons () {
+    this.setElementIcons(null)
+  }
+
+  resetFileIcons () {
+    this.setFileIcons(DefaultFileIcons)
+  }
+
+  setElementIcons (service) {
+    if (service !== this.elementIcons) {
+      if (this.elementIconDisposables != null) {
+        this.elementIconDisposables.dispose()
+      }
+      if (service) { this.elementIconDisposables = new CompositeDisposable() }
+      this.elementIcons = service
+      return this.emitter.emit('did-change')
+    }
+  }
+
+  setFileIcons (service) {
+    if (service !== this.fileIcons) {
+      this.fileIcons = service
+      return this.emitter.emit('did-change')
+    }
+  }
+
+  updateDirectoryIcon (view) {
+    view.entrySpan.classList.add('directory', 'icon', 'icon-file-directory')
+    if (this.elementIcons) {
+      view.iconDisposable = this.elementIcons(view.entrySpan, view.entry.path, {isDirectory: true})
+    }
+  }
+
+  updateFileIcon (view) {
+    const nameClasses = ['file', 'icon']
+    if (this.elementIcons) {
+      const fullPath = path.join(view.archivePath, view.entry.path)
+      const disposable = this.elementIcons(view.name, fullPath)
+      view.disposables.add(disposable)
+      this.elementIconDisposables.add(disposable)
+    } else {
+      let typeClass = this.fileIcons.iconClassForPath(view.entry.path, 'archive-view') || []
+      if (!Array.isArray(typeClass) && typeClass) {
+        typeClass = typeClass.toString().split(/\s+/g)
+      }
+      nameClasses.push(...typeClass)
+    }
+    view.name.classList.add(...nameClasses)
+  }
+}
diff --git a/packages/archive-view/package-lock.json b/packages/archive-view/package-lock.json
new file mode 100644
index 000000000..d61149dd0
--- /dev/null
+++ b/packages/archive-view/package-lock.json
@@ -0,0 +1,513 @@
+{
+  "name": "archive-view",
+  "version": "0.66.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "archive-view",
+      "version": "0.66.0",
+      "license": "MIT",
+      "dependencies": {
+        "etch": "^0.14.1",
+        "humanize-plus": "~1.8.2",
+        "ls-archive": "1.3.4",
+        "temp": "^0.9.4"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/async": {
+      "version": "0.2.10",
+      "resolved": "https://registry.npmjs.org/async/-/async-0.2.10.tgz",
+      "integrity": "sha512-eAkdoKxU6/LkKDBzLpT+t6Ff5EtfSF4wx1WfJiPEEV7WNLnDaRXk0oVysiEPm262roaachGexwUv94WhSgN5TQ=="
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw=="
+    },
+    "node_modules/block-stream": {
+      "version": "0.0.9",
+      "resolved": "https://registry.npmjs.org/block-stream/-/block-stream-0.0.9.tgz",
+      "integrity": "sha512-OorbnJVPII4DuUKbjARAe8u8EfqOmkEEaSFIyoQ7OjTHn6kafxWl0wLgoZ2rXaYd7MyLcDaU4TmhfxtwgcccMQ==",
+      "dependencies": {
+        "inherits": "~2.0.0"
+      },
+      "engines": {
+        "node": "0.4 || >=0.5.8"
+      }
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
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+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
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+      "engines": {
+        "node": "*"
+      }
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+      "resolved": "https://registry.npmjs.org/colors/-/colors-0.6.2.tgz",
+      "integrity": "sha512-OsSVtHK8Ir8r3+Fxw/b4jS1ZLPXkV6ZxDRJQzeD7qo0SqMXWrHDM71DgYzPMHY8SFJ0Ao+nNU2p1MmwdzKqPrw==",
+      "engines": {
+        "node": ">=0.1.90"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="
+    },
+    "node_modules/etch": {
+      "version": "0.14.1",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.14.1.tgz",
+      "integrity": "sha512-+IwqSDBhaQFMUHJu4L/ir0dhDoW5IIihg4Z9lzsIxxne8V0PlSg0gnk2STaKWjGJQnDR4cxpA+a/dORX9kycTA=="
+    },
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+      "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw=="
+    },
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+    },
+    "node_modules/humanize-plus": {
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+      "resolved": "https://registry.npmjs.org/humanize-plus/-/humanize-plus-1.8.2.tgz",
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+        "wrappy": "1"
+      }
+    },
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+      "version": "2.0.4",
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+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+    },
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+      "resolved": "https://registry.npmjs.org/ls-archive/-/ls-archive-1.3.4.tgz",
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+      "funding": {
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+      "requires": {
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+        "fstream": "^1.0.12",
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+            "glob": "^7.1.3"
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+    },
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+    },
+    "yauzl": {
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
+      "integrity": "sha512-p4a9I6X6nu6IhoGmBqAcbJy1mlC4j27vEPZX9F4L4/vZT3Lyq1VkFHw/V/PUcB9Buo+DG3iHkT0x3Qya58zc3g==",
+      "requires": {
+        "buffer-crc32": "~0.2.3",
+        "fd-slicer": "~1.1.0"
+      }
+    }
+  }
+}
diff --git a/packages/archive-view/package.json b/packages/archive-view/package.json
new file mode 100644
index 000000000..64389cb8b
--- /dev/null
+++ b/packages/archive-view/package.json
@@ -0,0 +1,33 @@
+{
+  "name": "archive-view",
+  "version": "0.66.0",
+  "description": "View the files and folders inside archive files",
+  "main": "./lib/archive-editor",
+  "dependencies": {
+    "etch": "^0.14.1",
+    "humanize-plus": "~1.8.2",
+    "ls-archive": "1.3.4",
+    "temp": "^0.9.4"
+  },
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "engines": {
+    "atom": "*"
+  },
+  "deserializers": {
+    "ArchiveEditor": "deserialize",
+    "ArchiveEditorView": "deserialize"
+  },
+  "consumedServices": {
+    "atom.file-icons": {
+      "versions": {
+        "1.0.0": "consumeFileIcons"
+      }
+    },
+    "file-icons.element-icons": {
+      "versions": {
+        "1.0.0": "consumeElementIcons"
+      }
+    }
+  }
+}
diff --git a/packages/archive-view/resources/preview.png b/packages/archive-view/resources/preview.png
new file mode 100644
index 000000000..1dbbdad95
Binary files /dev/null and b/packages/archive-view/resources/preview.png differ
diff --git a/packages/archive-view/spec/archive-editor-spec.js b/packages/archive-view/spec/archive-editor-spec.js
new file mode 100644
index 000000000..7b0bea958
--- /dev/null
+++ b/packages/archive-view/spec/archive-editor-spec.js
@@ -0,0 +1,46 @@
+const {it, fit, ffit, fffit, beforeEach, afterEach, conditionPromise} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+const path = require('path')
+const ArchiveEditor = require('../lib/archive-editor')
+const ArchiveEditorView = require('../lib/archive-editor-view')
+
+describe('ArchiveEditor', () => {
+  const tarPath = path.join(__dirname, 'fixtures', 'nested.tar')
+
+  // Don't log during specs
+  beforeEach(() => spyOn(console, 'warn'))
+
+  describe('.deserialize', () => {
+    it('returns undefined if no file exists at the given path', () => {
+      const editor1 = new ArchiveEditorView(tarPath)
+      const state = editor1.serialize()
+      editor1.destroy()
+
+      const editor2 = ArchiveEditor.deserialize(state)
+      expect(editor2).toBeDefined()
+      editor2.destroy()
+
+      state.path = 'bogus'
+      expect(ArchiveEditor.deserialize(state)).toBeUndefined()
+    })
+  })
+
+  describe('.deactivate()', () => {
+    it('removes all ArchiveEditorViews from the workspace and does not open any new ones', async () => {
+      const getArchiveEditorViews = () => {
+        return atom.workspace.getPaneItems().filter(item => item instanceof ArchiveEditorView)
+      }
+      await atom.packages.activatePackage('archive-view')
+      await atom.workspace.open(path.join(__dirname, 'fixtures', 'nested.tar'))
+      await atom.workspace.open(path.join(__dirname, 'fixtures', 'invalid.zip'))
+      await atom.workspace.open()
+      expect(getArchiveEditorViews().length).toBe(2)
+
+      await atom.packages.deactivatePackage('archive-view')
+      expect(getArchiveEditorViews().length).toBe(0)
+
+      await atom.workspace.open(path.join(__dirname, 'fixtures', 'nested.tar'))
+      expect(getArchiveEditorViews().length).toBe(0)
+    })
+  })
+})
diff --git a/packages/archive-view/spec/archive-editor-view-spec.js b/packages/archive-view/spec/archive-editor-view-spec.js
new file mode 100644
index 000000000..4ded3e5a8
--- /dev/null
+++ b/packages/archive-view/spec/archive-editor-view-spec.js
@@ -0,0 +1,276 @@
+const {Disposable, File} = require('atom')
+const getIconServices = require('../lib/get-icon-services')
+const {it, fit, ffit, fffit, beforeEach, afterEach, conditionPromise} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+async function condition (handler) {
+  if (jasmine.isSpy(window.setTimeout)) {
+    jasmine.useRealClock()
+  }
+  return conditionPromise(handler)
+}
+
+describe('ArchiveEditorView', () => {
+  let archiveEditorView, onDidChangeCallback, onDidRenameCallback, onDidDeleteCallback
+
+  beforeEach(async () => {
+    spyOn(File.prototype, 'onDidChange').andCallFake(function (callback) {
+      if (/\.tar$/.test(this.getPath())) {
+        onDidChangeCallback = callback
+      }
+      return new Disposable()
+    })
+
+    spyOn(File.prototype, 'onDidRename').andCallFake(function (callback) {
+      if (/\.tar$/.test(this.getPath())) {
+        onDidRenameCallback = callback
+      }
+      return new Disposable()
+    })
+
+    spyOn(File.prototype, 'onDidDelete').andCallFake(function (callback) {
+      if (/\.tar$/.test(this.getPath())) {
+        onDidDeleteCallback = callback
+      }
+      return new Disposable()
+    })
+
+    await atom.packages.activatePackage('archive-view')
+    archiveEditorView = await atom.workspace.open('nested.tar')
+  })
+
+  describe('.constructor()', () => {
+    it('displays the files and folders in the archive file', async () => {
+      expect(archiveEditorView.element).toExist()
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+
+      const directoryElements = archiveEditorView.element.querySelectorAll('.directory')
+      expect(directoryElements.length).toBe(6)
+      expect(directoryElements[0].textContent).toBe('d1')
+      expect(directoryElements[1].textContent).toBe('d2')
+      expect(directoryElements[2].textContent).toBe('d3')
+      expect(directoryElements[3].textContent).toBe('d4')
+      expect(directoryElements[4].textContent).toBe('da')
+      expect(directoryElements[5].textContent).toBe('db')
+
+      const fileElements = archiveEditorView.element.querySelectorAll('.file')
+      expect(fileElements.length).toBe(3)
+      expect(fileElements[0].textContent).toBe('f1.txt')
+      expect(fileElements[1].textContent).toBe('f2.txt')
+      expect(fileElements[2].textContent).toBe('fa.txt')
+    })
+
+    it('selects the first file', async () => {
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+      expect(archiveEditorView.element.querySelector('.selected').textContent).toBe('f1.txt')
+    })
+  })
+
+  describe('.copy()', () => {
+    it('returns a new ArchiveEditorView for the same file', () => {
+      const newArchiveView = archiveEditorView.copy()
+      expect(newArchiveView.getPath()).toBe(archiveEditorView.getPath())
+    })
+  })
+
+  describe('archive summary', () => {
+    beforeEach(async () => {
+      await atom.workspace.open('multiple-entries.zip')
+      archiveEditorView = atom.workspace.getActivePaneItem()
+      jasmine.attachToDOM(atom.views.getView(atom.workspace))
+    })
+
+    it('shows correct statistics', async () => {
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+      const heading = archiveEditorView.element.querySelector('.inset-panel .panel-heading')
+      expect(heading).not.toBe(null)
+      expect(heading.textContent).toBe('704 bytes with 4 files and 1 folder')
+    })
+  })
+
+  describe('when core:move-up/core:move-down is triggered', () => {
+    let selectedEntry
+    const dispatch = (command) => {
+      atom.commands.dispatch(archiveEditorView.element.querySelector('.selected'), command)
+      selectedEntry = archiveEditorView.element.querySelector('.selected').textContent
+      return true
+    }
+
+    it('selects the next/previous file', async () => {
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+      expect(archiveEditorView.element).toBeDefined()
+      dispatch('core:move-up') && expect(selectedEntry).toBe('f1.txt')
+      dispatch('core:move-down') && expect(selectedEntry).toBe('f2.txt')
+      dispatch('core:move-down') && expect(selectedEntry).toBe('fa.txt')
+      dispatch('core:move-down') && expect(selectedEntry).toBe('fa.txt')
+      dispatch('core:move-up') && expect(selectedEntry).toBe('f2.txt')
+      dispatch('core:move-up') && expect(selectedEntry).toBe('f1.txt')
+    })
+  })
+
+  describe('when a file is clicked', () => {
+    it('copies the contents to a temp file and opens it in a new editor', async () => {
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+      archiveEditorView.element.querySelectorAll('.file')[2].click()
+      await condition(() => atom.workspace.getActivePane().getItems().length > 1)
+      expect(atom.workspace.getActivePaneItem().getText()).toBe('hey there\n')
+      expect(atom.workspace.getActivePaneItem().getTitle()).toBe('fa.txt')
+    })
+  })
+
+  describe('when a directory is clicked', () => {
+    it('collapses/expands itself', async () => {
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+      let directory = archiveEditorView.element.querySelectorAll('.list-nested-item.entry')[0]
+      expect(directory.classList.contains('collapsed')).toBeFalsy()
+      directory.querySelector('.list-item').click()
+      expect(directory.classList.contains('collapsed')).toBeTruthy()
+      directory.querySelector('.list-item').click()
+      expect(directory.classList.contains('collapsed')).toBeFalsy()
+    })
+  })
+
+  describe('when core:confirm is triggered', () => {
+    it('copies the contents to a temp file and opens it in a new editor', async () => {
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+      atom.commands.dispatch(archiveEditorView.element.querySelector('.file'), 'core:confirm')
+      await condition(() => atom.workspace.getActivePane().getItems().length > 1)
+      expect(atom.workspace.getActivePaneItem().getText()).toBe('')
+      expect(atom.workspace.getActivePaneItem().getTitle()).toBe('f1.txt')
+    })
+  })
+
+  describe('when the file is modified', () => {
+    it('refreshes the view', async () => {
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+      spyOn(archiveEditorView, 'refresh')
+      onDidChangeCallback()
+      expect(archiveEditorView.refresh).toHaveBeenCalled()
+    })
+  })
+
+  describe('when the file is renamed', () => {
+    it('refreshes the view and updates the title', async () => {
+      spyOn(File.prototype, 'getPath').andReturn('nested-renamed.tar')
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+      spyOn(archiveEditorView, 'refresh').andCallThrough()
+      spyOn(archiveEditorView, 'getTitle')
+      onDidRenameCallback()
+      expect(archiveEditorView.refresh).toHaveBeenCalled()
+      expect(archiveEditorView.getTitle).toHaveBeenCalled()
+    })
+  })
+
+  describe('when the file is removed', () => {
+    it('destroys the view', async () => {
+      await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+      expect(atom.workspace.getActivePane().getItems().length).toBe(1)
+      onDidDeleteCallback()
+      expect(atom.workspace.getActivePaneItem()).toBeUndefined()
+    })
+  })
+
+  describe('when the file is invalid', () => {
+    beforeEach(async () => {
+      await atom.workspace.open('invalid.zip')
+      archiveEditorView = atom.workspace.getActivePaneItem()
+      jasmine.attachToDOM(atom.views.getView(atom.workspace))
+    })
+
+    it('shows the error', async () => {
+      await condition(() => archiveEditorView.refs.errorMessage.offsetHeight > 0)
+      expect(archiveEditorView.refs.errorMessage.textContent.length).toBeGreaterThan(0)
+    })
+  })
+
+  describe('FileIcons', () => {
+    async function openFile () {
+      await atom.workspace.open('file-icons.zip')
+      archiveEditorView = atom.workspace.getActivePaneItem()
+      jasmine.attachToDOM(atom.views.getView(atom.workspace))
+    }
+
+    describe('Icon service', () => {
+      const service = { iconClassForPath () {} }
+      beforeEach(() => openFile())
+
+      it('provides a default service', () => {
+        expect(getIconServices().fileIcons).toBeDefined()
+        expect(getIconServices().fileIcons).not.toBeNull()
+      })
+
+      it('allows the default to be overridden', () => {
+        getIconServices().setFileIcons(service)
+        expect(getIconServices().fileIcons).toBe(service)
+      })
+
+      it('allows service to be reset without hassle', () => {
+        getIconServices().setFileIcons(service)
+        getIconServices().resetFileIcons()
+        expect(getIconServices().fileIcons).not.toBe(service)
+      })
+    })
+
+    describe('Class handling', () => {
+      function findEntryContainingText (text) {
+        for (const entry of archiveEditorView.element.querySelectorAll('.list-item.entry')) {
+          if (entry.textContent.includes(text)) { return entry }
+        }
+        return null
+      }
+
+      function checkMultiClass () {
+        expect(findEntryContainingText('adobe.pdf').querySelector('.file.icon').className).toBe('file icon text pdf-icon document')
+        expect(findEntryContainingText('spacer.gif').querySelector('.file.icon').className).toBe('file icon binary gif-icon image')
+        expect(findEntryContainingText('font.ttf').querySelector('.file.icon').className).toBe('file icon binary ttf-icon font')
+      }
+
+      it('displays default file-icons', async () => {
+        await openFile()
+        await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+        expect(findEntryContainingText('adobe.pdf').querySelector('.file.icon.icon-file-pdf').length).not.toBe(0)
+        expect(findEntryContainingText('spacer.gif').querySelector('.file.icon.icon-file-media').length).not.toBe(0)
+        expect(findEntryContainingText('sunn.o').querySelector('.file.icon.icon-file-binary').length).not.toBe(0)
+      })
+
+      it('allows multiple classes to be passed', async () => {
+        getIconServices().setFileIcons({
+          iconClassForPath: (path) => {
+            switch (path.match(/\w*$/)[0]) {
+              case 'pdf': return 'text pdf-icon document'
+              case 'ttf': return 'binary ttf-icon font'
+              case 'gif': return 'binary gif-icon image'
+            }
+          }
+        })
+        await openFile()
+        await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+        checkMultiClass()
+      })
+
+      it('allows an array of classes to be passed', async () => {
+        getIconServices().setFileIcons({
+          iconClassForPath: (path) => {
+            switch (path.match(/\w*$/)[0]) {
+              case 'pdf': return ['text', 'pdf-icon', 'document']
+              case 'ttf': return ['binary', 'ttf-icon', 'font']
+              case 'gif': return ['binary', 'gif-icon', 'image']
+            }
+          }
+        })
+        await openFile()
+        await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+        checkMultiClass()
+      })
+
+      it('identifies context to icon-service providers', async () => {
+        getIconServices().setFileIcons({
+          iconClassForPath: (path, context) => `icon-${context}`
+        })
+        await openFile()
+        await condition(() => archiveEditorView.element.querySelectorAll('.entry').length > 0)
+        const icons = findEntryContainingText('adobe.pdf').querySelectorAll('.file.icon-archive-view')
+        expect(icons.length).not.toBe(0)
+      })
+    })
+  })
+})
diff --git a/packages/archive-view/spec/async-spec-helpers.js b/packages/archive-view/spec/async-spec-helpers.js
new file mode 100644
index 000000000..73002c049
--- /dev/null
+++ b/packages/archive-view/spec/async-spec-helpers.js
@@ -0,0 +1,103 @@
+/** @babel */
+
+export function beforeEach (fn) {
+  global.beforeEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+export function afterEach (fn) {
+  global.afterEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+['it', 'fit', 'ffit', 'fffit'].forEach(function (name) {
+  module.exports[name] = function (description, fn) {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, function () {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise(() => result)
+      }
+    })
+  }
+})
+
+export async function conditionPromise (condition, description = 'anonymous condition') {
+  const startTime = Date.now()
+
+  while (true) {
+    await timeoutPromise(100)
+
+    if (await condition()) {
+      return
+    }
+
+    if (Date.now() - startTime > 5000) {
+      throw new Error('Timed out waiting on ' + description)
+    }
+  }
+}
+
+export function timeoutPromise (timeout) {
+  return new Promise(function (resolve) {
+    global.setTimeout(resolve, timeout)
+  })
+}
+
+function waitsForPromise (fn) {
+  const promise = fn()
+  global.waitsFor('spec promise to resolve', function (done) {
+    promise.then(done, function (error) {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
+
+export function emitterEventPromise (emitter, event, timeout = 15000) {
+  return new Promise((resolve, reject) => {
+    const timeoutHandle = setTimeout(() => {
+      reject(new Error(`Timed out waiting for '${event}' event`))
+    }, timeout)
+    emitter.once(event, () => {
+      clearTimeout(timeoutHandle)
+      resolve()
+    })
+  })
+}
+
+export function promisify (original) {
+  return function (...args) {
+    return new Promise((resolve, reject) => {
+      args.push((err, ...results) => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve(...results)
+        }
+      })
+
+      return original(...args)
+    })
+  }
+}
+
+export function promisifySome (obj, fnNames) {
+  const result = {}
+  for (const fnName of fnNames) {
+    result[fnName] = promisify(obj[fnName])
+  }
+  return result
+}
diff --git a/packages/archive-view/spec/fixtures/file-icons.zip b/packages/archive-view/spec/fixtures/file-icons.zip
new file mode 100644
index 000000000..e16c663f6
Binary files /dev/null and b/packages/archive-view/spec/fixtures/file-icons.zip differ
diff --git a/packages/archive-view/spec/fixtures/invalid.zip b/packages/archive-view/spec/fixtures/invalid.zip
new file mode 100644
index 000000000..9977a2836
--- /dev/null
+++ b/packages/archive-view/spec/fixtures/invalid.zip
@@ -0,0 +1 @@
+invalid
diff --git a/packages/archive-view/spec/fixtures/multiple-entries.zip b/packages/archive-view/spec/fixtures/multiple-entries.zip
new file mode 100644
index 000000000..274439698
Binary files /dev/null and b/packages/archive-view/spec/fixtures/multiple-entries.zip differ
diff --git a/packages/archive-view/spec/fixtures/nested.tar b/packages/archive-view/spec/fixtures/nested.tar
new file mode 100644
index 000000000..732692998
Binary files /dev/null and b/packages/archive-view/spec/fixtures/nested.tar differ
diff --git a/packages/archive-view/styles/archive-view.less b/packages/archive-view/styles/archive-view.less
new file mode 100644
index 000000000..f15783e1c
--- /dev/null
+++ b/packages/archive-view/styles/archive-view.less
@@ -0,0 +1,24 @@
+@import "ui-variables";
+
+.archive-editor {
+  background-color: @inset-panel-background-color;
+  overflow: auto;
+  contain: strict;
+
+  .archive-container {
+    height: 100%;
+    width: 100%;
+
+    .inset-panel {
+      border-width: 0;
+
+      .panel-heading {
+        border-radius: 0;
+      }
+
+      .archive-tree {
+        padding: 5px;
+      }
+    }
+  }
+}
diff --git a/packages/atom-dark-syntax/LICENSE.md b/packages/atom-dark-syntax/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/atom-dark-syntax/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/atom-dark-syntax/README.md b/packages/atom-dark-syntax/README.md
index 177b7b5d6..3859d4555 100644
--- a/packages/atom-dark-syntax/README.md
+++ b/packages/atom-dark-syntax/README.md
@@ -1,8 +1,8 @@
-# Atom Dark Syntax theme
+# Pulsar Dark Syntax theme
 
-A dark syntax theme for Atom.
+A dark syntax theme for Pulsar.
 
-This theme is installed by default with Atom and can be activated by going to
+This theme is installed by default with Pulsar and can be activated by going to
 the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the
 _Syntax Themes_ dropdown menu.
 
diff --git a/packages/atom-dark-syntax/package-lock.json b/packages/atom-dark-syntax/package-lock.json
new file mode 100644
index 000000000..d33a7413a
--- /dev/null
+++ b/packages/atom-dark-syntax/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "atom-dark-syntax",
+  "version": "0.29.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "atom-dark-syntax",
+      "version": "0.29.1",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.50.0"
+      }
+    }
+  }
+}
diff --git a/packages/atom-dark-ui/LICENSE.md b/packages/atom-dark-ui/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/atom-dark-ui/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/atom-dark-ui/README.md b/packages/atom-dark-ui/README.md
index cd6e3e322..117af79d9 100644
--- a/packages/atom-dark-ui/README.md
+++ b/packages/atom-dark-ui/README.md
@@ -1,8 +1,8 @@
-# Atom Dark UI theme
+# Pulsar Dark UI theme
 
-A dark UI theme for Atom.
+A dark UI theme for Pulsar.
 
-This theme is installed by default with Atom and can be activated by going to
+This theme is installed by default with Pulsar and can be activated by going to
 the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the
 _UI Themes_ drop-down menu.
 
diff --git a/packages/atom-dark-ui/package-lock.json b/packages/atom-dark-ui/package-lock.json
new file mode 100644
index 000000000..f41b472ee
--- /dev/null
+++ b/packages/atom-dark-ui/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "atom-dark-ui",
+  "version": "0.53.3",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "atom-dark-ui",
+      "version": "0.53.3",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.40.0"
+      }
+    }
+  }
+}
diff --git a/packages/atom-light-syntax/LICENSE.md b/packages/atom-light-syntax/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/atom-light-syntax/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/atom-light-syntax/README.md b/packages/atom-light-syntax/README.md
index d2d0b2719..26dcd9ca0 100644
--- a/packages/atom-light-syntax/README.md
+++ b/packages/atom-light-syntax/README.md
@@ -1,8 +1,8 @@
-# Atom Light Syntax theme
+# Pulsar Light Syntax theme
 
-A light syntax theme for Atom.
+A light syntax theme for Pulsar.
 
-This theme is installed by default with Atom and can be activated by going to
+This theme is installed by default with Pulsar and can be activated by going to
 the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the
 _Syntax Themes_ dropdown menu.
 
diff --git a/packages/atom-light-syntax/package-lock.json b/packages/atom-light-syntax/package-lock.json
new file mode 100644
index 000000000..192c54c8d
--- /dev/null
+++ b/packages/atom-light-syntax/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "atom-light-syntax",
+  "version": "0.29.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "atom-light-syntax",
+      "version": "0.29.1",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.40.0"
+      }
+    }
+  }
+}
diff --git a/packages/atom-light-ui/LICENSE.md b/packages/atom-light-ui/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/atom-light-ui/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/atom-light-ui/README.md b/packages/atom-light-ui/README.md
index 2bfc7012f..c9c1a333b 100644
--- a/packages/atom-light-ui/README.md
+++ b/packages/atom-light-ui/README.md
@@ -1,8 +1,8 @@
-# Atom Light UI theme
+# Pulsar Light UI theme
 
-A light UI theme for Atom.
+A light UI theme for Pulsar.
 
-This theme is installed by default with Atom and can be activated by going to
+This theme is installed by default with Pulsar and can be activated by going to
 the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the
 _UI Themes_ drop-down menu.
 
diff --git a/packages/atom-light-ui/package-lock.json b/packages/atom-light-ui/package-lock.json
new file mode 100644
index 000000000..3a9c19745
--- /dev/null
+++ b/packages/atom-light-ui/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "atom-light-ui",
+  "version": "0.46.3",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "atom-light-ui",
+      "version": "0.46.3",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.50.0"
+      }
+    }
+  }
+}
diff --git a/packages/autocomplete-css/.gitignore b/packages/autocomplete-css/.gitignore
new file mode 100644
index 000000000..3c3629e64
--- /dev/null
+++ b/packages/autocomplete-css/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/packages/autocomplete-css/README.md b/packages/autocomplete-css/README.md
new file mode 100644
index 000000000..cac8c056a
--- /dev/null
+++ b/packages/autocomplete-css/README.md
@@ -0,0 +1,12 @@
+# CSS Autocomplete package
+
+CSS property name and value autocompletions in Pulsar. Uses the
+[autocomplete-plus](https://github.com/pulsar-edit/autocomplete-plus) package.
+
+This is powered by the list of CSS property and values [here](https://github.com/adobe/brackets/blob/master/src/extensions/default/CSSCodeHints/CSSProperties.json).
+
+![css-completions](https://cloud.githubusercontent.com/assets/671378/6357910/b9ecbe7c-bc1c-11e4-89b1-033e626c891f.gif)
+
+You can update the prebuilt list of property names and values by running the `update.coffee` file at the root of the repository and then checking in the changed `properties.json` file.
+
+`sorted-property-names.json` is updated manually - take a look at https://developer.microsoft.com/en-us/microsoft-edge/platform/usage/ and https://www.chromestatus.com/metrics/css/popularity for guidance.
diff --git a/packages/autocomplete-css/completions.json b/packages/autocomplete-css/completions.json
new file mode 100644
index 000000000..1f86cc168
--- /dev/null
+++ b/packages/autocomplete-css/completions.json
@@ -0,0 +1,2225 @@
+{
+  "tags": [
+    "a",
+    "b",
+    "blockquote",
+    "body",
+    "br",
+    "button",
+    "canvas",
+    "code",
+    "div",
+    "em",
+    "form",
+    "footer",
+    "h1",
+    "h2",
+    "h3",
+    "h4",
+    "h5",
+    "h6",
+    "head",
+    "header",
+    "hgroup",
+    "hr",
+    "html",
+    "i",
+    "iframe",
+    "img",
+    "input",
+    "label",
+    "li",
+    "nav",
+    "ol",
+    "p",
+    "pre",
+    "select",
+    "span",
+    "strong",
+    "sub",
+    "summary",
+    "table",
+    "td",
+    "textarea",
+    "th",
+    "title",
+    "tr",
+    "ul",
+    "abbr",
+    "address",
+    "area",
+    "article",
+    "aside",
+    "audio",
+    "base",
+    "bdi",
+    "bdo",
+    "big",
+    "caption",
+    "cite",
+    "col",
+    "colgroup",
+    "command",
+    "datalist",
+    "dd",
+    "del",
+    "details",
+    "dfn",
+    "dialog",
+    "dl",
+    "dt",
+    "embed",
+    "fieldset",
+    "figcaption",
+    "figure",
+    "ilayer",
+    "ins",
+    "kbd",
+    "keygen",
+    "legend",
+    "link",
+    "main",
+    "map",
+    "mark",
+    "marquee",
+    "menu",
+    "meta",
+    "meter",
+    "noscript",
+    "object",
+    "optgroup",
+    "option",
+    "output",
+    "param",
+    "progress",
+    "q",
+    "rp",
+    "rt",
+    "ruby",
+    "samp",
+    "script",
+    "section",
+    "small",
+    "source",
+    "style",
+    "sup",
+    "tbody",
+    "tfoot",
+    "thead",
+    "time",
+    "track",
+    "tt",
+    "var",
+    "video",
+    "wbr"
+  ],
+  "properties": {
+    "width": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Specifies the width of an element."
+    },
+    "height": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Specifies the height of an element."
+    },
+    "margin": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Sets the margin area on all four sides of an element."
+    },
+    "margin-left": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Sets the margin area on the left side of an element."
+    },
+    "margin-right": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Sets the margin area on the right side of an element."
+    },
+    "margin-top": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Sets the margin area on the top of an element."
+    },
+    "margin-bottom": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Sets the margin area on the bottom of an element."
+    },
+    "padding": {
+      "values": [
+        "inherit"
+      ],
+      "description": "Sets the padding area on all four sides of an element."
+    },
+    "padding-left": {
+      "values": [],
+      "description": "Sets the width of the padding area on the left side of an element."
+    },
+    "padding-right": {
+      "values": [],
+      "description": "Sets the width of the padding area on the right side of an element."
+    },
+    "padding-top": {
+      "values": [],
+      "description": "Sets the height of the padding area on the top of an element."
+    },
+    "padding-bottom": {
+      "values": [],
+      "description": "Sets the height of the padding area on the bottom of an element."
+    },
+    "font": {
+      "values": [],
+      "description": "Either a shorthand property for setting font-style, font-variant, font-weight, font-size, line-height, and font-family ; or a way to set the element's font to a system font, using specific keywords."
+    },
+    "font-size": {
+      "values": [],
+      "description": "Specifies the size of the font."
+    },
+    "font-style": {
+      "values": [
+        "italic",
+        "normal",
+        "oblique"
+      ],
+      "description": "Specifies whether a font should be styled with a normal, italic, or oblique face from its font-family."
+    },
+    "font-weight": {
+      "values": [
+        "bold",
+        "bolder",
+        "lighter",
+        "normal",
+        "100",
+        "200",
+        "300",
+        "400",
+        "500",
+        "600",
+        "700",
+        "800",
+        "900",
+        "inherit"
+      ],
+      "description": "Specifies the weight (or boldness) of the font."
+    },
+    "font-family": {
+      "values": [
+        "cursive",
+        "fantasy",
+        "inherit",
+        "monospace",
+        "sans-serif",
+        "serif"
+      ],
+      "description": "Specifies a prioritized list of one or more font family names and/or generic family names for the selected element."
+    },
+    "border": {
+      "values": [],
+      "description": "A shorthand property for setting all individual border property values at once: border-width, border-style, and border-color."
+    },
+    "border-radius": {
+      "values": [],
+      "description": "Allows Web authors to define how rounded border corners are."
+    },
+    "border-top": {
+      "values": [],
+      "description": "A shorthand that sets the values of border-top-color, border-top-style, and border-top-width."
+    },
+    "border-bottom": {
+      "values": [],
+      "description": "A shorthand that sets the values of border-bottom-color, border-bottom-style, and border-bottom-width."
+    },
+    "border-left": {
+      "values": [],
+      "description": "A shorthand that sets the values of border-left-color, border-left-style, and border-left-width."
+    },
+    "border-right": {
+      "values": [],
+      "description": "A shorthand that sets the values of border-right-color, border-right-style, and border-right-width."
+    },
+    "border-color": {
+      "values": [
+        "inherit"
+      ],
+      "type": "color",
+      "description": "A shorthand property for setting the color of the four sides of an element's border."
+    },
+    "border-width": {
+      "values": [
+        "medium",
+        "thin",
+        "thick",
+        "inherit"
+      ],
+      "description": "A shorthand property for setting the widths on all four sides of an element's border: border-top-width, border-right-width, border-bottom-width, and border-left-width."
+    },
+    "position": {
+      "values": [
+        "absolute",
+        "fixed",
+        "relative",
+        "static",
+        "sticky",
+        "inherit"
+      ],
+      "description": "Specifies how an element is positioned in a document."
+    },
+    "text-align": {
+      "values": [
+        "center",
+        "left",
+        "justify",
+        "right",
+        "inherit"
+      ],
+      "description": "Describes how inline content like text is aligned in its parent block element."
+    },
+    "background": {
+      "values": [],
+      "description": "The CSS background shorthand property lets you adjust all of the available background style options at once, including color image, origin and size, repeat method, and other features."
+    },
+    "background-color": {
+      "values": [
+        "inherit"
+      ],
+      "type": "color",
+      "description": "Sets the background color of an element, using either a color value or the keyword transparent."
+    },
+    "background-position": {
+      "values": [
+        "left",
+        "center",
+        "right",
+        "bottom",
+        "top"
+      ],
+      "description": "Sets the initial position for each defined background image, relative to the background position layer defined by background-origin."
+    },
+    "background-repeat": {
+      "values": [
+        "no-repeat",
+        "repeat",
+        "repeat-x",
+        "repeat-y",
+        "round",
+        "space"
+      ],
+      "description": "Defines how background images are repeated."
+    },
+    "background-image": {
+      "values": [
+        "image()",
+        "linear-gradient()",
+        "radial-gradient()",
+        "repeating-linear-gradient()",
+        "repeating-radial-gradient()",
+        "url()"
+      ],
+      "description": "Sets one or more background images on an element."
+    },
+    "background-size": {
+      "values": [
+        "auto",
+        "contain",
+        "cover"
+      ],
+      "description": "Specifies the size of an element's background image."
+    },
+    "background-clip": {
+      "values": [
+        "border-box",
+        "content-box",
+        "padding-box",
+        "inherit"
+      ],
+      "description": "Specifies if an element's background, whether a color or an image, extends underneath its border."
+    },
+    "right": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Participates in specifying the horizontal position of a positioned element."
+    },
+    "left": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Participates in specifying the horizontal position of a positioned element."
+    },
+    "top": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Participates in specifying the vertical position of a positioned element."
+    },
+    "bottom": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Participates in specifying the vertical position of a positioned element."
+    },
+    "overflow": {
+      "values": [
+        "auto",
+        "hidden",
+        "scroll",
+        "visible",
+        "inherit"
+      ],
+      "description": "Shorthand for the overflow-x and overflow-y properties, and specifies what to do when content is too large to fit in its block-level container."
+    },
+    "overflow-x": {
+      "values": [
+        "auto",
+        "hidden",
+        "scroll",
+        "visible",
+        "inherit"
+      ],
+      "description": "Specifies whether to clip content, render a scroll bar, or display overflow content of a block-level element, when it overflows at the left and right edges."
+    },
+    "overflow-y": {
+      "values": [
+        "auto",
+        "hidden",
+        "scroll",
+        "visible",
+        "inherit"
+      ],
+      "description": "Specifies whether to clip content, render a scroll bar, or display overflow content of a block-level element, when it overflows at the top and bottom edges."
+    },
+    "opacity": {
+      "values": [
+        "inherit"
+      ],
+      "description": "Specifies the level of transparency of an element, that is, the degree to which the content behind the element is visible."
+    },
+    "cursor": {
+      "values": [
+        "alias",
+        "all-scroll",
+        "auto",
+        "cell",
+        "col-resize",
+        "context-menu",
+        "copy",
+        "crosshair",
+        "default",
+        "e-resize",
+        "ew-resize",
+        "grab",
+        "grabbing",
+        "help",
+        "inherit",
+        "move",
+        "n-resize",
+        "ne-resize",
+        "nesw-resize",
+        "no-drop",
+        "none",
+        "not-allowed",
+        "ns-resize",
+        "nw-resize",
+        "nwse-resize",
+        "pointer",
+        "progress",
+        "row-resize",
+        "s-resize",
+        "se-resize",
+        "sw-resize",
+        "text",
+        "vertical-text",
+        "w-resize",
+        "wait",
+        "zoom-in",
+        "zoom-out"
+      ],
+      "description": "Specifies which mouse cursor to display when the mouse pointer is over an element."
+    },
+    "display": {
+      "values": [
+        "block",
+        "contents",
+        "flex",
+        "flow-root",
+        "grid",
+        "inline",
+        "inline-block",
+        "inline-flex",
+        "inline-grid",
+        "inline-table",
+        "list-item",
+        "none",
+        "run-in",
+        "subgrid",
+        "table",
+        "table-caption",
+        "table-cell",
+        "table-column",
+        "table-column-group",
+        "table-footer-group",
+        "table-header-group",
+        "table-row",
+        "table-row-group",
+        "inherit"
+      ],
+      "description": "Specifies the type of rendering box used for an element."
+    },
+    "color": {
+      "values": [
+        "inherit"
+      ],
+      "type": "color",
+      "description": "Sets the foreground color value of an element's text content and text decorations."
+    },
+    "visibility": {
+      "values": [
+        "collapse",
+        "hidden",
+        "visible",
+        "inherit"
+      ],
+      "description": "Can show or hide an element without affecting the layout of a document (i."
+    },
+    "float": {
+      "values": [
+        "left",
+        "right",
+        "none",
+        "inherit"
+      ],
+      "description": "Specifies that an element should be placed along the left or right side of its container, allowing text and inline elements to wrap around it."
+    },
+    "text-decoration": {
+      "values": [
+        "line-through",
+        "none",
+        "overline",
+        "underline",
+        "inherit"
+      ],
+      "description": "Specifies the appearance of decorative lines used on text."
+    },
+    "line-height": {
+      "values": [
+        "normal",
+        "inherit"
+      ],
+      "description": "Sets the amount of space used for lines, such as in text."
+    },
+    "z-index": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Specifies the z-order of a positioned element and its descendants."
+    },
+    "vertical-align": {
+      "values": [
+        "baseline",
+        "bottom",
+        "middle",
+        "sub",
+        "super",
+        "text-bottom",
+        "text-top",
+        "top",
+        "inherit"
+      ],
+      "description": "Specifies the vertical alignment of an inline or table-cell box."
+    },
+    "box-sizing": {
+      "values": [
+        "border-box",
+        "content-box",
+        "inherit"
+      ],
+      "description": "Used to alter the default CSS box model used to calculate width and height of the elements."
+    },
+    "clear": {
+      "values": [
+        "both",
+        "left",
+        "none",
+        "right",
+        "inherit"
+      ],
+      "description": "Specifies whether an element can be next to floating elements that precede it or must be moved down (cleared) below them."
+    },
+    "white-space": {
+      "values": [
+        "normal",
+        "nowrap",
+        "pre",
+        "pre-line",
+        "pre-wrap",
+        "inherit"
+      ],
+      "description": "Determines how whitespace inside an element is handled."
+    },
+    "max-width": {
+      "values": [
+        "none",
+        "inherit"
+      ],
+      "description": "Sets the maximum width of an element."
+    },
+    "outline": {
+      "values": [
+        "inherit"
+      ],
+      "description": "A shorthand property for setting one or more of the individual outline properties outline-style, outline-width, and outline-color in a single declaration."
+    },
+    "content": {
+      "values": [
+        "attr()",
+        "close-quote",
+        "no-close-quote",
+        "no-open-quote",
+        "normal",
+        "none",
+        "open-quote",
+        "inherit"
+      ],
+      "description": "Used with the ::before and ::after pseudo-elements to generate content in an element."
+    },
+    "min-width": {
+      "values": [
+        "inherit"
+      ],
+      "description": "Sets the minimum width of an element."
+    },
+    "min-height": {
+      "values": [
+        "inherit"
+      ],
+      "description": "Sets the minimum height of an element."
+    },
+    "list-style": {
+      "values": [
+        "none",
+        "inherit",
+        "initial",
+        "unset",
+        "url()",
+        "armenian",
+        "circle",
+        "decimal",
+        "decimal-leading-zero",
+        "disc",
+        "georgian",
+        "inside",
+        "lower-alpha",
+        "lower-greek",
+        "lower-latin",
+        "lower-roman",
+        "outside",
+        "square",
+        "upper-alpha",
+        "upper-latin",
+        "upper-roman"
+      ],
+      "description": "A shorthand for setting the individual values that define how a list is displayed: list-style-type, list-style-image, and list-style-position."
+    },
+    "box-shadow": {
+      "values": [],
+      "description": "Used to add shadow effects around an element's frame."
+    },
+    "text-shadow": {
+      "values": [],
+      "description": "Adds shadows to text."
+    },
+    "text-indent": {
+      "values": [
+        "inherit"
+      ],
+      "description": "Specifies the amount of indentation (empty space) that is put before lines of text in a block."
+    },
+    "max-height": {
+      "values": [
+        "none",
+        "inherit"
+      ],
+      "description": "Sets the maximum height of an element."
+    },
+    "text-overflow": {
+      "values": [
+        "clip",
+        "ellipsis",
+        "inherit"
+      ],
+      "description": "Determines how overflowed content that is not displayed is signaled to users."
+    },
+    "border-style": {
+      "values": [
+        "dashed",
+        "dotted",
+        "double",
+        "groove",
+        "hidden",
+        "inset",
+        "none",
+        "outset",
+        "ridge",
+        "solid",
+        "inherit"
+      ],
+      "description": "A shorthand property that sets the line style for all four sides of an element's border."
+    },
+    "border-spacing": {
+      "values": [
+        "inherit"
+      ],
+      "description": "Specifies the distance between the borders of adjacent table cells."
+    },
+    "border-collapse": {
+      "values": [
+        "collapse",
+        "separate",
+        "inherit"
+      ],
+      "description": "Specifies whether a table's borders are separated (cells have distinct borders from each other) or collapsed (adjacent cells share borders)."
+    },
+    "border-left-color": {
+      "values": [
+        "inherit"
+      ],
+      "type": "color",
+      "description": "Sets the color of an element's left border."
+    },
+    "border-left-style": {
+      "values": [
+        "dashed",
+        "dotted",
+        "double",
+        "groove",
+        "hidden",
+        "inset",
+        "none",
+        "outset",
+        "ridge",
+        "solid",
+        "inherit"
+      ],
+      "description": "Sets the line style of an element's left border."
+    },
+    "border-left-width": {
+      "values": [
+        "medium",
+        "thin",
+        "thick",
+        "inherit"
+      ],
+      "description": "Sets the width of the left border of a box."
+    },
+    "border-right-color": {
+      "values": [
+        "inherit"
+      ],
+      "type": "color",
+      "description": "Sets the color of an element's right border."
+    },
+    "border-right-style": {
+      "values": [
+        "dashed",
+        "dotted",
+        "double",
+        "groove",
+        "hidden",
+        "inset",
+        "none",
+        "outset",
+        "ridge",
+        "solid",
+        "inherit"
+      ],
+      "description": "Sets the line style of an element's right border."
+    },
+    "border-right-width": {
+      "values": [
+        "medium",
+        "thin",
+        "thick",
+        "inherit"
+      ],
+      "description": "Sets the width of the right border of a box."
+    },
+    "border-top-color": {
+      "values": [
+        "inherit"
+      ],
+      "type": "color",
+      "description": "Sets the color of an element's top border."
+    },
+    "border-top-style": {
+      "values": [
+        "dashed",
+        "dotted",
+        "double",
+        "groove",
+        "hidden",
+        "inset",
+        "none",
+        "outset",
+        "ridge",
+        "solid",
+        "inherit"
+      ],
+      "description": "Sets the line style of an element's top border."
+    },
+    "border-top-width": {
+      "values": [
+        "medium",
+        "thin",
+        "thick",
+        "inherit"
+      ],
+      "description": "Sets the width of the top border of a box."
+    },
+    "border-bottom-color": {
+      "values": [
+        "inherit"
+      ],
+      "type": "color",
+      "description": "Sets the color of an element's bottom border."
+    },
+    "border-bottom-style": {
+      "values": [
+        "dashed",
+        "dotted",
+        "double",
+        "groove",
+        "hidden",
+        "inset",
+        "none",
+        "outset",
+        "ridge",
+        "solid",
+        "inherit"
+      ],
+      "description": "Sets the line style of an element's bottom border."
+    },
+    "border-bottom-width": {
+      "values": [
+        "medium",
+        "thin",
+        "thick",
+        "inherit"
+      ],
+      "description": "Sets the width of the bottom border of a box."
+    },
+    "border-top-left-radius": {
+      "values": [],
+      "description": "Sets the rounding of the top-left corner of the element."
+    },
+    "border-top-right-radius": {
+      "values": [],
+      "description": "Sets the rounding of the top-right corner of the element."
+    },
+    "border-bottom-left-radius": {
+      "values": [],
+      "description": "Sets the rounding of the bottom-left corner of the element."
+    },
+    "border-bottom-right-radius": {
+      "values": [],
+      "description": "Sets the rounding of the bottom-right corner of the element."
+    },
+    "user-select": {
+      "values": [
+        "all",
+        "auto",
+        "contain",
+        "none",
+        "text"
+      ],
+      "description": "Controls whether the user can select text."
+    },
+    "text-transform": {
+      "values": [
+        "capitalize",
+        "full-width",
+        "lowercase",
+        "none",
+        "uppercase",
+        "inherit"
+      ],
+      "description": "Specifies how to capitalize an element's text."
+    },
+    "list-style-type": {
+      "values": [
+        "armenian",
+        "circle",
+        "decimal",
+        "decimal-leading-zero",
+        "disc",
+        "georgian",
+        "lower-alpha",
+        "lower-greek",
+        "lower-latin",
+        "lower-roman",
+        "none",
+        "square",
+        "upper-alpha",
+        "upper-latin",
+        "upper-roman",
+        "inherit"
+      ],
+      "description": "Specifies the appearance of a list item element."
+    },
+    "word-wrap": {
+      "values": [
+        "break-word",
+        "normal"
+      ]
+    },
+    "transition": {
+      "values": [],
+      "description": "A shorthand property for transition-property, transition-duration, transition-timing-function, and transition-delay."
+    },
+    "letter-spacing": {
+      "values": [
+        "normal",
+        "inherit"
+      ],
+      "description": "Specifies the spacing behavior between text characters."
+    },
+    "transform": {
+      "values": [
+        "matrix()",
+        "matrix3d()",
+        "none",
+        "perspective()",
+        "rotate()",
+        "rotate3d()",
+        "rotateX()",
+        "rotateY()",
+        "rotateZ()",
+        "scale()",
+        "scale3d()",
+        "scaleX()",
+        "scaleY()",
+        "scaleZ()",
+        "skewX()",
+        "skewY()",
+        "translate()",
+        "translate3d()",
+        "translateX()",
+        "translateY()",
+        "translateZ()"
+      ],
+      "description": "Lets you modify the coordinate space of the CSS visual formatting model."
+    },
+    "pointer-events": {
+      "values": [
+        "all",
+        "auto",
+        "fill",
+        "inherit",
+        "none",
+        "painted",
+        "stroke",
+        "visible",
+        "visibleFill",
+        "visiblePainted",
+        "visibleStroke"
+      ],
+      "description": "Specifies under what circumstances (if any) a particular graphic element can become the target of mouse events."
+    },
+    "direction": {
+      "values": [
+        "ltr",
+        "rtl",
+        "inherit"
+      ],
+      "description": "Sets the direction of text, table columns, and horizontal overflow."
+    },
+    "clip": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Defines what portion of an element is visible."
+    },
+    "table-layout": {
+      "values": [
+        "auto",
+        "fixed",
+        "inherit"
+      ],
+      "description": "Specifies the algorithm used to lay out table cells, rows, and columns."
+    },
+    "src": {
+      "values": [
+        "url()"
+      ]
+    },
+    "resize": {
+      "values": [
+        "both",
+        "horizontal",
+        "none",
+        "vertical",
+        "inherit"
+      ],
+      "description": "The resize CSS sets whether an element is resizable, and if so, in which direction(s)."
+    },
+    "word-break": {
+      "values": [
+        "normal",
+        "break-all",
+        "keep-all"
+      ],
+      "description": "Specifies whether or not the browser should insert line breaks wherever the text would otherwise overflow its content box."
+    },
+    "filter": {
+      "values": [
+        "blur()",
+        "brightness()",
+        "contrast()",
+        "custom()",
+        "drop-shadow()",
+        "grayscale()",
+        "hue-rotate()",
+        "invert()",
+        "none",
+        "opacity()",
+        "sepia()",
+        "saturate()",
+        "url()"
+      ],
+      "description": "Lets you apply graphical effects like blurring or color shifting to an element."
+    },
+    "transform-origin": {
+      "values": [
+        "bottom",
+        "center",
+        "left",
+        "right",
+        "top"
+      ],
+      "description": "Lets you modify the origin for transformations of an element."
+    },
+    "font-variant": {
+      "values": [
+        "normal",
+        "small-caps",
+        "inherit"
+      ],
+      "description": "A shorthand for the longhand properties font-variant-caps, font-variant-numeric, font-variant-alternates, font-variant-ligatures, and font-variant-east-asian."
+    },
+    "quotes": {
+      "values": [
+        "none",
+        "inherit"
+      ],
+      "description": "Indicates how user agents should render quotation marks."
+    },
+    "unicode-bidi": {
+      "values": [
+        "bidi-override",
+        "embed",
+        "normal",
+        "inherit"
+      ],
+      "description": "The unicode-bidi CSS property, together with the direction property, determines how bidirectional text in a document is handled."
+    },
+    "word-spacing": {
+      "values": [
+        "normal",
+        "inherit"
+      ],
+      "description": "Specifies the spacing behavior between tags and words."
+    },
+    "text-rendering": {
+      "values": [
+        "auto",
+        "geometricPrecision",
+        "optimizeLegibility",
+        "optimizeSpeed"
+      ],
+      "description": "Provides information to the rendering engine about what to optimize for when rendering text."
+    },
+    "outline-color": {
+      "values": [
+        "invert",
+        "inherit"
+      ],
+      "type": "color",
+      "description": "Sets the color of an element's outline."
+    },
+    "list-style-position": {
+      "values": [
+        "inside",
+        "outside",
+        "inherit"
+      ],
+      "description": "Specifies the position of the marker box in the principal block box."
+    },
+    "outline-offset": {
+      "values": [
+        "inherit"
+      ],
+      "description": "Sets the amount of space between an outline and the edge or border of an element."
+    },
+    "orphans": {
+      "values": [
+        "inherit"
+      ],
+      "description": "Specifies the minimum number of lines in a block container that must be shown at the bottom of a page, region, or column."
+    },
+    "outline-style": {
+      "values": [
+        "dashed",
+        "dotted",
+        "double",
+        "groove",
+        "hidden",
+        "inset",
+        "none",
+        "outset",
+        "ridge",
+        "solid",
+        "inherit"
+      ],
+      "description": "Sets the style of an element's outline."
+    },
+    "outline-width": {
+      "values": [
+        "medium",
+        "thin",
+        "thick",
+        "inherit"
+      ],
+      "description": "Sets the width (thickness) of an element's outline."
+    },
+    "flex": {
+      "values": [
+        "auto",
+        "initial",
+        "none"
+      ],
+      "description": "Specifies how a flex item will grow or shrink so as to fit the space available in its flex container."
+    },
+    "flex-grow": {
+      "values": [],
+      "description": "Specifies the flex grow factor of a flex item."
+    },
+    "flex-direction": {
+      "values": [
+        "column",
+        "column-reverse",
+        "row",
+        "row-reverse"
+      ],
+      "description": "Specifies how flex items are placed in the flex container defining the main axis and the direction (normal or reversed)."
+    },
+    "flex-flow": {
+      "values": [
+        "column",
+        "column-reverse",
+        "nowrap",
+        "row",
+        "row-reverse",
+        "wrap",
+        "wrap-reverse"
+      ],
+      "description": "A shorthand property for flex-direction and flex-wrap individual properties."
+    },
+    "flex-wrap": {
+      "values": [
+        "nowrap",
+        "wrap",
+        "wrap-reverse"
+      ],
+      "description": "Specifies whether flex items are forced into a single line or can be wrapped onto multiple lines."
+    },
+    "flex-shrink": {
+      "values": [],
+      "description": "Specifies the flex shrink factor of a flex item."
+    },
+    "flex-basis": {
+      "values": [
+        "auto"
+      ],
+      "description": "Specifies the initial main size of a flex item."
+    },
+    "list-style-image": {
+      "values": [
+        "none",
+        "url()",
+        "inherit"
+      ],
+      "description": "Specifies an image to be used as the list item marker."
+    },
+    "unicode-range": {
+      "values": []
+    },
+    "align-items": {
+      "values": [
+        "baseline",
+        "center",
+        "flex-end",
+        "flex-start",
+        "stretch"
+      ],
+      "description": "Defines how the browser distributes space between and around flex items along the cross-axis of their container."
+    },
+    "transition-delay": {
+      "values": [],
+      "description": "Specifies the amount of time to wait between a change being requested to a property that is to be transitioned and the start of the transition effect."
+    },
+    "transition-duration": {
+      "values": [],
+      "description": "Specifies the number of seconds or milliseconds a transition animation should take to complete."
+    },
+    "justify-content": {
+      "values": [
+        "center",
+        "flex-end",
+        "flex-start",
+        "space-around",
+        "space-between"
+      ],
+      "description": "Defines how the browser distributes space between and around content items along the main axis of their container."
+    },
+    "transition-property": {
+      "values": [
+        "all",
+        "none"
+      ],
+      "description": "Used to specify the names of CSS properties to which a transition effect should be applied."
+    },
+    "order": {
+      "values": [],
+      "description": "Specifies the order used to lay out flex items in their flex container."
+    },
+    "transition-timing-function": {
+      "values": [
+        "cubic-bezier()",
+        "ease",
+        "ease-in",
+        "ease-in-out",
+        "ease-out",
+        "linear",
+        "step-end",
+        "step-start",
+        "steps()"
+      ],
+      "description": "Used to describe how the intermediate values of the CSS properties being affected by a transition effect are calculated."
+    },
+    "background-attachment": {
+      "values": [
+        "fixed",
+        "local",
+        "scroll",
+        "inherit"
+      ],
+      "description": "If a background-image is specified, the background-attachment CSS property determines whether that image's position is fixed within the viewport, or scrolls along with its containing block."
+    },
+    "background-origin": {
+      "values": [
+        "border-box",
+        "content-box",
+        "padding-box",
+        "inherit"
+      ],
+      "description": "Sets the background positioning area, i."
+    },
+    "backface-visibility": {
+      "values": [
+        "hidden",
+        "visible"
+      ],
+      "description": "Determines whether or not the back face of the element is visible when facing the user."
+    },
+    "page-break-inside": {
+      "values": [
+        "auto",
+        "avoid",
+        "inherit"
+      ],
+      "description": "Adjusts page breaks inside the current element."
+    },
+    "page-break-after": {
+      "values": [
+        "always",
+        "auto",
+        "avoid",
+        "left",
+        "right",
+        "inherit"
+      ],
+      "description": "Adjusts page breaks after the current element."
+    },
+    "widows": {
+      "values": [
+        "inherit"
+      ],
+      "description": "Specifies the minimum number of lines in a block container that must be shown at the top of a page, region, or column."
+    },
+    "counter-increment": {
+      "values": [
+        "none",
+        "inherit"
+      ],
+      "description": "Increases or decreases the value of a CSS counter by a given value."
+    },
+    "counter-reset": {
+      "values": [
+        "none",
+        "inherit"
+      ],
+      "description": "Resets a CSS counter to a given value."
+    },
+    "perspective-origin": {
+      "values": [
+        "bottom",
+        "center",
+        "left",
+        "right",
+        "top"
+      ],
+      "description": "Determines the position at which the viewer is looking."
+    },
+    "perspective": {
+      "values": [
+        "none"
+      ],
+      "description": "Determines the distance between the z=0 plane and the user in order to give to the 3D-positioned element some perspective."
+    },
+    "empty-cells": {
+      "values": [
+        "hide",
+        "show",
+        "inherit"
+      ],
+      "description": "Specifies how the user agent should render borders and backgrounds around table cells that have no visible content."
+    },
+    "caption-side": {
+      "values": [
+        "bottom",
+        "top",
+        "inherit"
+      ],
+      "description": "Puts the content of a table's caption on the specified side."
+    },
+    "transform-style": {
+      "values": [
+        "flat",
+        "preserve-3d"
+      ],
+      "description": "Determines if the children of the element are positioned in the 3D-space or are flattened in the plane of the element."
+    },
+    "border-image": {
+      "values": [
+        "url()"
+      ],
+      "description": "Allows drawing an image on the borders of elements."
+    },
+    "font-stretch": {
+      "values": [
+        "condensed",
+        "expanded",
+        "extra-condensed",
+        "extra-expanded",
+        "normal",
+        "semi-condensed",
+        "semi-expanded",
+        "ultra-condensed",
+        "ultra-expanded"
+      ],
+      "description": "Selects a normal, condensed, or expanded face from a font."
+    },
+    "will-change": {
+      "values": [
+        "auto",
+        "contents",
+        "opacity",
+        "scroll-position",
+        "transform",
+        "inherit",
+        "initial",
+        "unset"
+      ],
+      "description": "Provides a way for authors to hint browsers about the kind of changes to be expected on an element, so that the browser can set up appropriate optimizations ahead of time before the element is actually changed."
+    },
+    "animation": {
+      "values": [],
+      "description": "A shorthand property for the various animation properties: animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state."
+    },
+    "page-break-before": {
+      "values": [
+        "always",
+        "auto",
+        "avoid",
+        "left",
+        "right",
+        "inherit"
+      ],
+      "description": "Adjusts page breaks before the current element."
+    },
+    "align-self": {
+      "values": [
+        "auto",
+        "baseline",
+        "center",
+        "flex-end",
+        "flex-start",
+        "stretch"
+      ],
+      "description": "Aligns flex items of the current flex line overriding the align-items value."
+    },
+    "align-content": {
+      "values": [
+        "center",
+        "flex-end",
+        "flex-start",
+        "space-around",
+        "space-between",
+        "stretch"
+      ],
+      "description": "Defines how the browser distributes space between and around content items along the cross-axis of their container, which is serving as a flexible box container."
+    },
+    "border-image-slice": {
+      "values": [],
+      "description": "Divides the image specified by border-image-source in nine regions: the four corners, the four edges and the middle."
+    },
+    "border-image-width": {
+      "values": [
+        "auto"
+      ],
+      "description": "Defines the width of the border image by defining inward offsets from the border edges."
+    },
+    "border-image-outset": {
+      "values": [],
+      "description": "Describes by what amount the border image area extends beyond the border box."
+    },
+    "border-image-repeat": {
+      "values": [
+        "repeat",
+        "round",
+        "space",
+        "stretch"
+      ],
+      "description": "Defines how the middle part of a border image is handled so that it can match the size of the border."
+    },
+    "tab-size": {
+      "values": [],
+      "description": "Used to customize the width of a tab (U+0009) character."
+    },
+    "object-fit": {
+      "values": [
+        "contain",
+        "cover",
+        "fill",
+        "none",
+        "scale-down"
+      ],
+      "description": "Specifies how a replaced element, such as an img or video, should be resized to fit its container."
+    },
+    "font-kerning": {
+      "values": [
+        "auto",
+        "none",
+        "normal"
+      ],
+      "description": "Controls the usage of the kerning information stored in a font."
+    },
+    "animation-name": {
+      "values": [
+        "none"
+      ],
+      "description": "Specifies one or more animations that should be applied to an element."
+    },
+    "animation-duration": {
+      "values": [],
+      "description": "Specifies the length of time that an animation should take to complete one cycle."
+    },
+    "border-image-source": {
+      "values": [],
+      "description": "Defines the image to use instead of the style of the border."
+    },
+    "animation-fill-mode": {
+      "values": [
+        "backwards",
+        "both",
+        "forwards",
+        "none"
+      ],
+      "description": "Specifies how a CSS animation should apply styles to its target before and after its execution."
+    },
+    "animation-timing-function": {
+      "values": [
+        "cubic-bezier()",
+        "ease",
+        "ease-in",
+        "ease-in-out",
+        "ease-out",
+        "linear",
+        "step-end",
+        "step-start",
+        "steps()"
+      ],
+      "description": "Specifies how a CSS animation should progress over the duration of each cycle."
+    },
+    "animation-iteration-count": {
+      "values": [
+        "infinite"
+      ],
+      "description": "Specifies the number of times an animation cycle should be played before stopping."
+    },
+    "animation-delay": {
+      "values": [],
+      "description": "Specifies when an animation should start."
+    },
+    "font-variant-ligatures": {
+      "values": [
+        "normal",
+        "none"
+      ],
+      "description": "Controls which ligatures and contextual forms are used in textual content of the elements it applies to."
+    },
+    "background-blend-mode": {
+      "values": [
+        "color",
+        "color-burn",
+        "color-dodge",
+        "darken",
+        "difference",
+        "exclusion",
+        "hard-light",
+        "hue",
+        "lighten",
+        "luminosity",
+        "multiply",
+        "normal",
+        "overlay",
+        "saturation",
+        "screen",
+        "soft-light"
+      ],
+      "description": "Describes how the element's background images should blend with each other and the element's background color."
+    },
+    "object-position": {
+      "values": [
+        "left",
+        "center",
+        "right",
+        "bottom",
+        "top"
+      ],
+      "description": "Determines the alignment of the selected element inside its box."
+    },
+    "mix-blend-mode": {
+      "values": [
+        "color",
+        "color-burn",
+        "color-dodge",
+        "darken",
+        "difference",
+        "exclusion",
+        "hard-light",
+        "hue",
+        "lighten",
+        "luminosity",
+        "multiply",
+        "normal",
+        "overlay",
+        "saturation",
+        "screen",
+        "soft-light"
+      ],
+      "description": "Describes how an element's content should blend with the content of the element's direct parent and the element's background."
+    },
+    "shape-outside": {
+      "values": [
+        "none",
+        "inherit",
+        "circle()",
+        "ellipse()",
+        "polygon()",
+        "inset()",
+        "margin-box",
+        "border-box",
+        "padding-box",
+        "content-box",
+        "url()",
+        "image()",
+        "linear-gradient()",
+        "radial-gradient()",
+        "repeating-linear-gradient()",
+        "repeating-radial-gradient()"
+      ],
+      "description": "Defines a shape around which inline content should wrap."
+    },
+    "shape-margin": {
+      "values": [],
+      "description": "Adds a margin to shape-outside."
+    },
+    "isolation": {
+      "values": [
+        "auto",
+        "isolate"
+      ],
+      "description": "Defines if the element must create a new stacking context."
+    },
+    "shape-image-threshold": {
+      "values": [],
+      "description": "Defines the alpha channel threshold used to extract the shape using an image as the value for shape-outside."
+    },
+    "animation-direction": {
+      "values": [
+        "alternate",
+        "alternate-reverse",
+        "normal",
+        "reverse"
+      ],
+      "description": "Specifies whether an animation should play forwards, backwards, or alternating back and forth."
+    },
+    "animation-play-state": {
+      "values": [
+        "paused",
+        "running"
+      ],
+      "description": "Specifies whether an animation is running or paused."
+    },
+    "all": {
+      "values": [],
+      "description": "The CSS all shorthand property resets all properties, apart from unicode-bidi and direction, to their initial or inherited value."
+    },
+    "column-fill": {
+      "values": [
+        "auto",
+        "balance"
+      ],
+      "description": "Controls how contents are partitioned into columns."
+    },
+    "text-align-last": {
+      "values": [
+        "center",
+        "left",
+        "justify",
+        "right",
+        "inherit"
+      ],
+      "description": "Describes how the last line of a block or a line, right before a forced line break, is aligned."
+    },
+    "text-decoration-color": {
+      "values": [],
+      "type": "color",
+      "description": "Sets the color of the decorative additions to text that are specified by text-decoration-line ; these include underlines and overlines, strikethroughs, and wavy lines like those typically used to indicate content is misspelled (for example)."
+    },
+    "text-decoration-style": {
+      "values": [
+        "dashed",
+        "dotted",
+        "double",
+        "solid",
+        "wavy"
+      ],
+      "description": "Sets the style of the lines specified by text-decoration-line."
+    },
+    "text-decoration-line": {
+      "values": [
+        "line-through",
+        "none",
+        "overline",
+        "underline"
+      ],
+      "description": "Sets the kind of decoration that is used on text in an element."
+    },
+    "font-size-adjust": {
+      "values": [
+        "auto",
+        "none"
+      ],
+      "description": "Specifies that font size should be chosen based on the height of lowercase letters rather than the height of capital letters."
+    },
+    "text-underline-position": {
+      "values": [
+        "alphabetic",
+        "auto",
+        "below",
+        "left",
+        "right"
+      ],
+      "description": "Specifies the position of the underline which is set using the text-decoration property's underline value."
+    },
+    "scroll-behavior": {
+      "values": [
+        "auto",
+        "smooth"
+      ],
+      "description": "Specifies the scrolling behavior for a scrolling box, when scrolling happens due to navigation or CSSOM scrolling APIs."
+    },
+    "grid-column": {
+      "values": [
+        "auto"
+      ],
+      "description": "A shorthand property for grid-column-start and grid-column-end specifying a grid item's size and location within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start and inline-end edge of its grid area."
+    },
+    "grid-row": {
+      "values": [
+        "auto"
+      ],
+      "description": "A shorthand property for grid-row-start and grid-row-end specifying a grid item’s size and location within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start and inline-end edge of its grid area."
+    },
+    "grid-template": {
+      "values": [
+        "none"
+      ],
+      "description": "A shorthand property for defining grid columns, rows, and areas."
+    },
+    "caret-color": {
+      "values": [
+        "auto"
+      ],
+      "type": "color",
+      "description": "Sets the color of the insertion caret—the visible indicator of the point at which the next character typed by the user will be inserted—within an element such as input or one with the contenteditable attribute set."
+    },
+    "grid-template-columns": {
+      "values": [
+        "auto"
+      ],
+      "description": "Defines the line names and track sizing functions of the grid columns."
+    },
+    "grid-auto-columns": {
+      "values": [],
+      "description": "Specifies the size of an implicitly-created grid column track."
+    },
+    "grid-auto-flow": {
+      "values": [
+        "row",
+        "column",
+        "dense"
+      ],
+      "description": "Controls how the auto-placement algorithm works, specifying exactly how auto-placed items get flowed into the grid."
+    },
+    "grid-auto-rows": {
+      "values": [],
+      "description": "Specifies the size of an implicitly-created grid row track."
+    },
+    "grid-column-start": {
+      "values": [],
+      "description": "Specifies a grid item’s start position within the grid column by contributing a line, a span, or nothing (automatic) to its grid placement."
+    },
+    "grid-template-rows": {
+      "values": [
+        "auto"
+      ],
+      "description": "Defines the line names and track sizing functions of the grid rows."
+    },
+    "grid-row-end": {
+      "values": [],
+      "description": "Specifies a grid item’s end position within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-end edge of its grid area."
+    },
+    "grid-column-end": {
+      "values": [],
+      "description": "Specifies a grid item’s end position within the grid column by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the block-end edge of its grid area."
+    },
+    "grid-row-start": {
+      "values": [],
+      "description": "Specifies a grid item’s start position within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start edge of its grid area."
+    },
+    "box-decoration-break": {
+      "values": [
+        "clone",
+        "slice"
+      ],
+      "description": "Specifies how the background, padding, border, border-image, box-shadow, margin, and clip-path of an element are applied when the box for the element is fragmented."
+    },
+    "break-after": {
+      "values": [
+        "always",
+        "auto",
+        "avoid",
+        "avoid-column",
+        "avoid-page",
+        "avoid-region",
+        "column",
+        "left",
+        "page",
+        "region",
+        "right"
+      ],
+      "description": "Defines how page, column, or region breaks should behave after a generated box."
+    },
+    "break-before": {
+      "values": [
+        "always",
+        "auto",
+        "avoid",
+        "avoid-column",
+        "avoid-page",
+        "avoid-region",
+        "column",
+        "left",
+        "page",
+        "region",
+        "right"
+      ],
+      "description": "Defines how page, column, or region breaks should behave before a generated box."
+    },
+    "break-inside": {
+      "values": [
+        "auto",
+        "avoid",
+        "avoid-column",
+        "avoid-page",
+        "avoid-region"
+      ],
+      "description": "Defines how page, column, or region breaks should behave inside a generated box."
+    },
+    "columns": {
+      "values": [],
+      "description": "A shorthand property allowing to set both the column-width and the column-count properties at the same time."
+    },
+    "column-count": {
+      "values": [],
+      "description": "Describes the number of columns of the element."
+    },
+    "column-gap": {
+      "values": [
+        "normal"
+      ],
+      "description": "Sets the size of the gap between columns for elements which are specified to be displayed as multi-column elements."
+    },
+    "column-rule": {
+      "values": [],
+      "description": "In multi-column layouts, the column-rule CSS property specifies a straight line, or \"rule\", to be drawn between each column."
+    },
+    "column-rule-color": {
+      "values": [],
+      "type": "color",
+      "description": "Lets you set the color of the rule or line drawn between columns in multi-column layouts."
+    },
+    "column-rule-style": {
+      "values": [
+        "dashed",
+        "dotted",
+        "double",
+        "groove",
+        "hidden",
+        "inset",
+        "none",
+        "outset",
+        "ridge",
+        "solid",
+        "inherit"
+      ],
+      "description": "Lets you set the style of the rule drawn between columns in multi-column layouts."
+    },
+    "column-rule-width": {
+      "values": [
+        "medium",
+        "thin",
+        "thick",
+        "inherit"
+      ],
+      "description": "Lets you set the width of the rule drawn between columns in multi-column layouts."
+    },
+    "column-span": {
+      "values": [
+        "all",
+        "none"
+      ],
+      "description": "Makes it possible for an element to span across all columns when its value is set to all."
+    },
+    "column-width": {
+      "values": [
+        "auto",
+        "inherit"
+      ],
+      "description": "Specifies the minimum column width."
+    },
+    "flow-into": {
+      "values": [
+        "none"
+      ],
+      "type": "named-flow"
+    },
+    "flow-from": {
+      "values": [
+        "none",
+        "inherit"
+      ],
+      "type": "named-flow"
+    },
+    "font-feature-settings": {
+      "values": [
+        "normal"
+      ],
+      "description": "Gives you control over advanced typographic features in OpenType fonts."
+    },
+    "font-language-override": {
+      "values": [
+        "normal"
+      ],
+      "description": "Controls the usage of language-specific glyphs in a typeface."
+    },
+    "font-synthesis": {
+      "values": [
+        "none",
+        "style",
+        "weight"
+      ],
+      "description": "Controls which missing typefaces, bold or italic, may be synthesized by the browser."
+    },
+    "font-variant-alternates": {
+      "values": [
+        "normal"
+      ],
+      "description": "Controls the usage of alternate glyphs."
+    },
+    "font-variant-caps": {
+      "values": [
+        "normal",
+        "small-caps",
+        "all-small-caps",
+        "petite-caps",
+        "all-petite-caps",
+        "unicase",
+        "titling-caps"
+      ],
+      "description": "Controls the usage of alternate glyphs for capital letters."
+    },
+    "font-variant-east-asian": {
+      "values": [
+        "normal"
+      ],
+      "description": "Controls the usage of alternate glyphs for East Asian scripts, like Japanese and Chinese."
+    },
+    "font-variant-numeric": {
+      "values": [
+        "normal"
+      ],
+      "description": "Controls the usage of alternate glyphs for numbers, fractions, and ordinal markers."
+    },
+    "font-variant-position": {
+      "values": [
+        "normal",
+        "sub",
+        "super"
+      ],
+      "description": "Controls the usage of alternate, smaller glyphs that are positioned as superscript or subscript relative to the baseline of the font (which remains unchanged)."
+    },
+    "hyphens": {
+      "values": [
+        "auto",
+        "manual",
+        "none"
+      ],
+      "description": "Specifies how words should be hyphenated when text wraps across multiple lines."
+    },
+    "image-orientation": {
+      "values": [],
+      "description": "Describes how to correct the default orientation of an image."
+    },
+    "image-resolution": {
+      "values": [
+        "from-image",
+        "snap"
+      ]
+    },
+    "region-break-after": {
+      "values": [
+        "always",
+        "auto",
+        "avoid",
+        "avoid-column",
+        "avoid-page",
+        "avoid-region",
+        "column",
+        "left",
+        "page",
+        "region",
+        "right"
+      ]
+    },
+    "region-break-before": {
+      "values": [
+        "always",
+        "auto",
+        "avoid",
+        "avoid-column",
+        "avoid-page",
+        "avoid-region",
+        "column",
+        "left",
+        "page",
+        "region",
+        "right"
+      ]
+    },
+    "region-break-inside": {
+      "values": [
+        "auto",
+        "avoid",
+        "avoid-column",
+        "avoid-page",
+        "avoid-region"
+      ]
+    },
+    "region-fragment": {
+      "values": [
+        "auto",
+        "break"
+      ]
+    },
+    "shape-inside": {
+      "values": [
+        "auto",
+        "circle()",
+        "ellipse()",
+        "inherit",
+        "outside-shape",
+        "polygon()",
+        "rectangle()"
+      ]
+    },
+    "text-decoration-skip": {
+      "values": [
+        "edges",
+        "ink",
+        "none",
+        "objects",
+        "spaces"
+      ],
+      "description": "Specifies what parts of the element’s content any text decoration affecting the element must skip over."
+    },
+    "text-emphasis": {
+      "values": [],
+      "description": "A shorthand property for setting text-emphasis-style and text-emphasis-color in one declaration."
+    },
+    "text-emphasis-color": {
+      "values": [],
+      "type": "color",
+      "description": "Defines the color used to draw emphasis marks on text being rendered in the HTML document."
+    },
+    "text-emphasis-position": {
+      "values": [
+        "above",
+        "below",
+        "left",
+        "right"
+      ],
+      "description": "Describes where emphasis marks are drawn at."
+    },
+    "text-emphasis-style": {
+      "values": [
+        "circle",
+        "dot",
+        "double-circle",
+        "filled",
+        "none",
+        "open",
+        "sesame",
+        "triangle"
+      ],
+      "description": "Defines the type of emphasis used."
+    },
+    "font-display": {
+      "values": [
+        "auto",
+        "block",
+        "swap",
+        "fallback",
+        "optional"
+      ]
+    },
+    "grid": {
+      "values": [],
+      "description": "A shorthand property that sets all of the explicit grid properties (grid-template-rows, grid-template-columns, and grid-template-areas), all the implicit grid properties (grid-auto-rows, grid-auto-columns, and grid-auto-flow), and the gutter properties (grid-column-gap and grid-row-gap) in a single declaration."
+    },
+    "grid-area": {
+      "values": [],
+      "description": "A shorthand property for grid-row-start, grid-column-start, grid-row-end and grid-column-end, specifying a grid item’s size and location within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the edges of its grid area."
+    },
+    "grid-column-gap": {
+      "values": [],
+      "description": "Specifies the gutter between grid columns."
+    },
+    "grid-gap": {
+      "values": [],
+      "description": "A shorthand property for grid-row-gap and grid-column-gap specifying the gutters between grid rows and columns."
+    },
+    "grid-row-gap": {
+      "values": [],
+      "description": "Specifies the gutter between grid rows."
+    },
+    "grid-template-areas": {
+      "values": [],
+      "description": "Specifies named grid areas."
+    },
+    "hanging-punctuation": {
+      "values": [
+        "allow-end",
+        "first",
+        "force-end",
+        "last",
+        "none"
+      ],
+      "description": "Specifies whether a punctuation mark should hang at the start or end of a line of text."
+    }
+  },
+  "pseudoSelectors": {
+    "::after": {
+      "description": "Matches a virtual last child of the selected element."
+    },
+    "::before": {
+      "description": "Creates a pseudo-element that is the first child of the element matched."
+    },
+    "::first-letter": {
+      "description": "Matches the first letter of the first line of a block, if it is not preceded by any other content."
+    },
+    "::first-line": {
+      "description": "Applies styles only to the first line of an element."
+    },
+    "::selection": {
+      "description": "Applies rules to the portion of a document that has been highlighted."
+    },
+    ":active": {
+      "description": "Matches when an element is being activated by the user."
+    },
+    ":checked": {
+      "description": "Matches any radio input, checkbox input or option element that is checked or toggled to an on state."
+    },
+    ":default": {
+      "description": "Matches any user interface element that is the default among a group of similar elements"
+    },
+    ":dir": {
+      "argument": "direction",
+      "description": "Matches elements based on the directionality of the text contained in it."
+    },
+    ":disabled": {
+      "description": "Matches any disabled element."
+    },
+    ":empty": {
+      "description": "Matches any element that has no children at all."
+    },
+    ":enabled": {
+      "description": "Matches any enabled element."
+    },
+    ":first": {
+      "description": "Describes the styling of the first page when printing a document."
+    },
+    ":first-child": {
+      "description": "Matches any element that is the first child element of its parent."
+    },
+    ":first-of-type": {
+      "description": "Matches the first sibling of its type in the list of children of its parent element."
+    },
+    ":focus": {
+      "description": "Matches an element that has focus."
+    },
+    ":fullscreen": {
+      "description": "Applies to any element that's currently being displayed in full-screen mode."
+    },
+    ":hover": {
+      "description": "Matches when the user designates an element with a pointing device, but does not necessarily activate it."
+    },
+    ":indeterminate": {
+      "description": "Matches any checkbox input whose indeterminate DOM property is set to true by JavaScript."
+    },
+    ":invalid": {
+      "description": "Matches any <input> or <form> element whose content fails to validate according to the input's type setting."
+    },
+    ":lang": {
+      "argument": "language",
+      "description": "Matches elements based on the language the element is determined to be in."
+    },
+    ":last-child": {
+      "description": "Matches any element that is the last child element of its parent."
+    },
+    ":last-of-type": {
+      "description": "Matches the last sibling with the given element name in the list of children of its parent element."
+    },
+    ":left": {
+      "description": "Matches any left page when printing a page."
+    },
+    ":link": {
+      "description": "Matches links inside elements."
+    },
+    ":not": {
+      "argument": "selector",
+      "description": "Matches an element that is not represented by the argument."
+    },
+    ":nth-child": {
+      "argument": "an+b",
+      "description": "Matches an element that has an+b-1 siblings before it in the document tree."
+    },
+    ":nth-last-child": {
+      "argument": "an+b",
+      "description": "Matches an element that has an+b-1 siblings after it in the document tree."
+    },
+    ":nth-last-of-type": {
+      "argument": "an+b",
+      "description": "Matches an element that has an+b-1 siblings with the same element name after it in the document tree."
+    },
+    ":nth-of-type": {
+      "argument": "an+b",
+      "description": "Matches an element that has an+b-1 siblings with the same element name before it in the document tree"
+    },
+    ":only-child": {
+      "description": "Matches any element which is the only child of its parent."
+    },
+    ":only-of-type": {
+      "description": "Matches any element that has no siblings of the given type."
+    },
+    ":optional": {
+      "description": "Matches any <input> element that does not have the required attribute set on it."
+    },
+    ":out-of-range": {
+      "description": "Matches when an element has its value attribute outside the specified range limitations for this element."
+    },
+    ":read-only": {
+      "description": "Matches when an element is not writable by the user."
+    },
+    ":read-write": {
+      "description": "Matches when an element is editable by user like text input element."
+    },
+    ":required": {
+      "description": "Matches any <input> element that has the required attribute set on it."
+    },
+    ":right": {
+      "description": "Matches any right page when printing a page. It allows to describe the styling of right-side page."
+    },
+    ":root": {
+      "description": "Matches the root element of a tree representing the document."
+    },
+    ":scope": {
+      "description": "Matches the elements that are a reference point for selectors to match against."
+    },
+    ":target": {
+      "description": "Matches the unique element, if any, with an id matching the fragment identifier of the URI of the document."
+    },
+    ":valid": {
+      "description": "Matches any <input> or <form> element whose content validates correctly according to the input's type setting"
+    },
+    ":visited": {
+      "description": "Matches links that have been visited."
+    }
+  }
+}
diff --git a/packages/autocomplete-css/fetch-property-docs.coffee b/packages/autocomplete-css/fetch-property-docs.coffee
new file mode 100644
index 000000000..62386a68c
--- /dev/null
+++ b/packages/autocomplete-css/fetch-property-docs.coffee
@@ -0,0 +1,85 @@
+path = require 'path'
+fs = require 'fs'
+request = require 'request'
+
+mdnCSSURL = 'https://developer.mozilla.org/en-US/docs/Web/CSS'
+mdnJSONAPI = 'https://developer.mozilla.org/en-US/search.json?topic=css&highlight=false'
+PropertiesURL = 'https://raw.githubusercontent.com/adobe/brackets/master/src/extensions/default/CSSCodeHints/CSSProperties.json'
+
+fetch = ->
+  propertiesPromise = new Promise (resolve) ->
+    request {json: true, url: PropertiesURL}, (error, response, properties) ->
+      if error?
+        console.error(error.message)
+        resolve(null)
+
+      if response.statusCode isnt 200
+        console.error("Request for CSSProperties.json failed: #{response.statusCode}")
+        resolve(null)
+
+      resolve(properties)
+
+  propertiesPromise.then (properties) ->
+    return unless properties?
+
+    MAX = 10
+    queue = Object.keys(properties)
+    running = []
+    docs = {}
+
+    new Promise (resolve) ->
+      checkEnd = ->
+        resolve(docs) if queue.length is 0 and running.length is 0
+
+      removeRunning = (propertyName) ->
+        index = running.indexOf(propertyName)
+        running.splice(index, 1) if index > -1
+
+      runNext = ->
+        checkEnd()
+        if queue.length isnt 0
+          propertyName = queue.pop()
+          running.push(propertyName)
+          run(propertyName)
+
+      run = (propertyName) ->
+        url = "#{mdnJSONAPI}&q=#{propertyName}"
+        request {json: true, url}, (error, response, searchResults) ->
+          if not error? and response.statusCode is 200
+            handleRequest(propertyName, searchResults)
+          else
+            console.error "Req failed #{url}; #{response.statusCode}, #{error}"
+          removeRunning(propertyName)
+          checkEnd()
+          runNext()
+
+      handleRequest = (propertyName, searchResults) ->
+        if searchResults.documents?
+          for doc in searchResults.documents
+            if doc.url is "#{mdnCSSURL}/#{propertyName}"
+              docs[propertyName] = filterExcerpt(propertyName, doc.excerpt)
+              break
+        return
+
+      runNext() for [0..MAX]
+      return
+
+filterExcerpt = (propertyName, excerpt) ->
+  beginningPattern = /^the (css )?[a-z-]+ (css )?property (is )?(\w+)/i
+  excerpt = excerpt.replace beginningPattern, (match) ->
+    matches = beginningPattern.exec(match)
+    firstWord = matches[4]
+    firstWord[0].toUpperCase() + firstWord.slice(1)
+  periodIndex = excerpt.indexOf('.')
+  excerpt = excerpt.slice(0, periodIndex + 1) if periodIndex > -1
+  excerpt
+
+# Save a file if run from the command line
+if require.main is module
+  fetch().then (docs) ->
+    if docs?
+      fs.writeFileSync(path.join(__dirname, 'property-docs.json'), "#{JSON.stringify(docs, null, '  ')}\n")
+    else
+      console.error 'No docs'
+
+module.exports = fetch
diff --git a/packages/autocomplete-css/html-tags.json b/packages/autocomplete-css/html-tags.json
new file mode 100644
index 000000000..8068ee998
--- /dev/null
+++ b/packages/autocomplete-css/html-tags.json
@@ -0,0 +1,114 @@
+[
+  "a",
+  "b",
+  "blockquote",
+  "body",
+  "br",
+  "button",
+  "canvas",
+  "code",
+  "div",
+  "em",
+  "form",
+  "footer",
+  "h1",
+  "h2",
+  "h3",
+  "h4",
+  "h5",
+  "h6",
+  "head",
+  "header",
+  "hgroup",
+  "hr",
+  "html",
+  "i",
+  "iframe",
+  "img",
+  "input",
+  "label",
+  "li",
+  "nav",
+  "ol",
+  "p",
+  "pre",
+  "select",
+  "span",
+  "strong",
+  "sub",
+  "summary",
+  "table",
+  "td",
+  "textarea",
+  "th",
+  "title",
+  "tr",
+  "ul",
+  "abbr",
+  "address",
+  "area",
+  "article",
+  "aside",
+  "audio",
+  "base",
+  "bdi",
+  "bdo",
+  "big",
+  "caption",
+  "cite",
+  "col",
+  "colgroup",
+  "command",
+  "datalist",
+  "dd",
+  "del",
+  "details",
+  "dfn",
+  "dialog",
+  "dl",
+  "dt",
+  "embed",
+  "fieldset",
+  "figcaption",
+  "figure",
+  "ilayer",
+  "ins",
+  "kbd",
+  "keygen",
+  "legend",
+  "link",
+  "main",
+  "map",
+  "mark",
+  "marquee",
+  "menu",
+  "meta",
+  "meter",
+  "noscript",
+  "object",
+  "optgroup",
+  "option",
+  "output",
+  "param",
+  "progress",
+  "q",
+  "rp",
+  "rt",
+  "ruby",
+  "samp",
+  "script",
+  "section",
+  "small",
+  "source",
+  "style",
+  "sup",
+  "tbody",
+  "tfoot",
+  "thead",
+  "time",
+  "track",
+  "tt",
+  "var",
+  "video",
+  "wbr"
+]
diff --git a/packages/autocomplete-css/lib/main.coffee b/packages/autocomplete-css/lib/main.coffee
new file mode 100644
index 000000000..8729ffe97
--- /dev/null
+++ b/packages/autocomplete-css/lib/main.coffee
@@ -0,0 +1,6 @@
+provider = require './provider'
+
+module.exports =
+  activate: ->
+
+  getProvider: -> provider
diff --git a/packages/autocomplete-css/lib/provider.coffee b/packages/autocomplete-css/lib/provider.coffee
new file mode 100644
index 000000000..bed6872ff
--- /dev/null
+++ b/packages/autocomplete-css/lib/provider.coffee
@@ -0,0 +1,318 @@
+COMPLETIONS = require('../completions.json')
+
+firstInlinePropertyNameWithColonPattern = /{\s*(\S+)\s*:/ # .example { display: }
+inlinePropertyNameWithColonPattern = /(?:;.+?)*;\s*(\S+)\s*:/ # .example { display: block; float: left; color: } (match the last one)
+propertyNameWithColonPattern = /^\s*(\S+)\s*:/ # display:
+propertyNamePrefixPattern = /[a-zA-Z]+[-a-zA-Z]*$/
+pseudoSelectorPrefixPattern = /:(:)?([a-z]+[a-z-]*)?$/
+tagSelectorPrefixPattern = /(^|\s|,)([a-z]+)?$/
+importantPrefixPattern = /(![a-z]+)$/
+cssDocsURL = "https://developer.mozilla.org/en-US/docs/Web/CSS"
+
+module.exports =
+  selector: '.source.css, .source.sass, .source.css.postcss'
+  disableForSelector: '.source.css .comment, .source.css .string, .source.sass .comment, .source.sass .string, .source.css.postcss .comment, source.css.postcss .string'
+  properties: COMPLETIONS.properties
+  pseudoSelectors: COMPLETIONS.pseudoSelectors
+  tags: COMPLETIONS.tags
+
+  # Tell autocomplete to fuzzy filter the results of getSuggestions(). We are
+  # still filtering by the first character of the prefix in this provider for
+  # efficiency.
+  filterSuggestions: true
+
+  getSuggestions: (request) ->
+    completions = null
+    scopes = request.scopeDescriptor.getScopesArray()
+    isSass = hasScope(scopes, 'source.sass', true)
+
+    if @isCompletingValue(request)
+      completions = @getPropertyValueCompletions(request)
+    else if @isCompletingPseudoSelector(request)
+      completions = @getPseudoSelectorCompletions(request)
+    else
+      if isSass and @isCompletingNameOrTag(request)
+        completions = @getPropertyNameCompletions(request)
+          .concat(@getTagCompletions(request))
+      else if not isSass and @isCompletingName(request)
+        completions = @getPropertyNameCompletions(request)
+
+    if not isSass and @isCompletingTagSelector(request)
+      tagCompletions = @getTagCompletions(request)
+      if tagCompletions?.length
+        completions ?= []
+        completions = completions.concat(tagCompletions)
+
+    completions
+
+  onDidInsertSuggestion: ({editor, suggestion}) ->
+    setTimeout(@triggerAutocomplete.bind(this, editor), 1) if suggestion.type is 'property'
+
+  triggerAutocomplete: (editor) ->
+    atom.commands.dispatch(atom.views.getView(editor), 'autocomplete-plus:activate', {activatedManually: false})
+
+  isCompletingValue: ({scopeDescriptor, bufferPosition, prefix, editor}) ->
+    scopes = scopeDescriptor.getScopesArray()
+
+    beforePrefixBufferPosition = [bufferPosition.row, Math.max(0, bufferPosition.column - prefix.length - 1)]
+    beforePrefixScopes = editor.scopeDescriptorForBufferPosition(beforePrefixBufferPosition)
+    beforePrefixScopesArray = beforePrefixScopes.getScopesArray()
+
+    previousBufferPosition = [bufferPosition.row, Math.max(0, bufferPosition.column - 1)]
+    previousScopes = editor.scopeDescriptorForBufferPosition(previousBufferPosition)
+    previousScopesArray = previousScopes.getScopesArray()
+
+    (hasScope(scopes, 'meta.property-list.css') and prefix.trim() is ":") or
+    (hasScope(previousScopesArray, 'meta.property-value.css')) or
+    (hasScope(scopes, 'meta.property-list.scss') and prefix.trim() is ":") or
+    (hasScope(previousScopesArray, 'meta.property-value.scss')) or
+    (hasScope(scopes, 'meta.property-list.postcss') and prefix.trim() is ":") or
+    (hasScope(previousScopesArray, 'meta.property-value.postcss')) or
+    (hasScope(scopes, 'source.sass', true) and (hasScope(scopes, 'meta.property-value.sass') or
+      (not hasScope(beforePrefixScopesArray, 'entity.name.tag.css') and prefix.trim() is ":")
+    ))
+
+  isCompletingName: ({scopeDescriptor, bufferPosition, prefix, editor}) ->
+    scopes = scopeDescriptor.getScopesArray()
+    isAtTerminator = prefix.endsWith(';')
+    isAtParentSymbol = prefix.endsWith('&')
+    isVariable = hasScope(scopes, 'variable.css') or
+      hasScope(scopes, 'variable.scss') or
+      hasScope(scopes, 'variable.var.postcss')
+    isInPropertyList = not isAtTerminator and
+      (hasScope(scopes, 'meta.property-list.css') or
+      hasScope(scopes, 'meta.property-list.scss') or
+      hasScope(scopes, 'meta.property-list.postcss'))
+
+    return false unless isInPropertyList
+    return false if isAtParentSymbol or isVariable
+
+    previousBufferPosition = [bufferPosition.row, Math.max(0, bufferPosition.column - prefix.length - 1)]
+    previousScopes = editor.scopeDescriptorForBufferPosition(previousBufferPosition)
+    previousScopesArray = previousScopes.getScopesArray()
+
+    return false if hasScope(previousScopesArray, 'entity.other.attribute-name.class.css') or
+      hasScope(previousScopesArray, 'entity.other.attribute-name.id.css') or
+      hasScope(previousScopesArray, 'entity.other.attribute-name.id') or
+      hasScope(previousScopesArray, 'entity.other.attribute-name.parent-selector.css') or
+      hasScope(previousScopesArray, 'entity.name.tag.reference.scss') or
+      hasScope(previousScopesArray, 'entity.name.tag.scss') or
+      hasScope(previousScopesArray, 'entity.name.tag.reference.postcss') or
+      hasScope(previousScopesArray, 'entity.name.tag.postcss')
+
+    isAtBeginScopePunctuation = hasScope(scopes, 'punctuation.section.property-list.begin.bracket.curly.css') or
+      hasScope(scopes, 'punctuation.section.property-list.begin.bracket.curly.scss') or
+      hasScope(scopes, 'punctuation.section.property-list.begin.postcss')
+    isAtEndScopePunctuation = hasScope(scopes, 'punctuation.section.property-list.end.bracket.curly.css') or
+      hasScope(scopes, 'punctuation.section.property-list.end.bracket.curly.scss') or
+      hasScope(scopes, 'punctuation.section.property-list.end.postcss')
+
+    if isAtBeginScopePunctuation
+      # * Disallow here: `canvas,|{}`
+      # * Allow here: `canvas,{| }`
+      prefix.endsWith('{')
+    else if isAtEndScopePunctuation
+      # * Disallow here: `canvas,{}|`
+      # * Allow here: `canvas,{ |}`
+      not prefix.endsWith('}')
+    else
+      true
+
+  isCompletingNameOrTag: ({scopeDescriptor, bufferPosition, editor}) ->
+    scopes = scopeDescriptor.getScopesArray()
+    prefix = @getPropertyNamePrefix(bufferPosition, editor)
+    return @isPropertyNamePrefix(prefix) and
+      hasScope(scopes, 'meta.selector.css') and
+      not hasScope(scopes, 'entity.other.attribute-name.id.css.sass') and
+      not hasScope(scopes, 'entity.other.attribute-name.class.sass')
+
+  isCompletingTagSelector: ({editor, scopeDescriptor, bufferPosition}) ->
+    scopes = scopeDescriptor.getScopesArray()
+    tagSelectorPrefix = @getTagSelectorPrefix(editor, bufferPosition)
+    return false unless tagSelectorPrefix?.length
+
+    previousBufferPosition = [bufferPosition.row, Math.max(0, bufferPosition.column - 1)]
+    previousScopes = editor.scopeDescriptorForBufferPosition(previousBufferPosition)
+    previousScopesArray = previousScopes.getScopesArray()
+
+    if hasScope(scopes, 'meta.selector.css') or hasScope(previousScopesArray, 'meta.selector.css')
+      true
+    else if hasScope(scopes, 'source.css.scss', true) or hasScope(scopes, 'source.css.less', true) or hasScope(scopes, 'source.css.postcss', true)
+      not hasScope(previousScopesArray, 'meta.property-value.scss') and
+        not hasScope(previousScopesArray, 'meta.property-value.css') and
+        not hasScope(previousScopesArray, 'meta.property-value.postcss') and
+        not hasScope(previousScopesArray, 'support.type.property-value.css')
+    else
+      false
+
+  isCompletingPseudoSelector: ({editor, scopeDescriptor, bufferPosition}) ->
+    scopes = scopeDescriptor.getScopesArray()
+    previousBufferPosition = [bufferPosition.row, Math.max(0, bufferPosition.column - 1)]
+    previousScopes = editor.scopeDescriptorForBufferPosition(previousBufferPosition)
+    previousScopesArray = previousScopes.getScopesArray()
+    if (hasScope(scopes, 'meta.selector.css') or hasScope(previousScopesArray, 'meta.selector.css')) and not hasScope(scopes, 'source.sass', true)
+      true
+    else if hasScope(scopes, 'source.css.scss', true) or hasScope(scopes, 'source.css.less', true) or hasScope(scopes, 'source.sass', true) or hasScope(scopes, 'source.css.postcss', true)
+      prefix = @getPseudoSelectorPrefix(editor, bufferPosition)
+      if prefix
+        previousBufferPosition = [bufferPosition.row, Math.max(0, bufferPosition.column - prefix.length - 1)]
+        previousScopes = editor.scopeDescriptorForBufferPosition(previousBufferPosition)
+        previousScopesArray = previousScopes.getScopesArray()
+        not hasScope(previousScopesArray, 'meta.property-name.scss') and
+          not hasScope(previousScopesArray, 'meta.property-value.scss') and
+          not hasScope(previousScopesArray, 'meta.property-value.postcss') and
+          not hasScope(previousScopesArray, 'support.type.property-name.css') and
+          not hasScope(previousScopesArray, 'support.type.property-value.css') and
+          not hasScope(previousScopesArray, 'support.type.property-name.postcss')
+      else
+        false
+    else
+      false
+
+  isPropertyValuePrefix: (prefix) ->
+    prefix = prefix.trim()
+    prefix.length > 0 and prefix isnt ':'
+
+  isPropertyNamePrefix: (prefix) ->
+    return false unless prefix?
+    prefix = prefix.trim()
+    prefix.length > 0 and prefix.match(/^[a-zA-Z-]+$/)
+
+  getImportantPrefix: (editor, bufferPosition) ->
+    line = editor.getTextInRange([[bufferPosition.row, 0], bufferPosition])
+    importantPrefixPattern.exec(line)?[1]
+
+  getPreviousPropertyName: (bufferPosition, editor) ->
+    {row, column} = bufferPosition
+    while row >= 0
+      line = editor.lineTextForBufferRow(row)
+      line = line.substr(0, column) if row is bufferPosition.row
+      propertyName = inlinePropertyNameWithColonPattern.exec(line)?[1]
+      propertyName ?= firstInlinePropertyNameWithColonPattern.exec(line)?[1]
+      propertyName ?= propertyNameWithColonPattern.exec(line)?[1]
+      return propertyName if propertyName
+      row--
+    return
+
+  getPropertyValueCompletions: ({bufferPosition, editor, prefix, scopeDescriptor}) ->
+    property = @getPreviousPropertyName(bufferPosition, editor)
+    values = @properties[property]?.values
+    return null unless values?
+
+    scopes = scopeDescriptor.getScopesArray()
+    addSemicolon = not lineEndsWithSemicolon(bufferPosition, editor) and not hasScope(scopes, 'source.sass', true)
+
+    completions = []
+    if @isPropertyValuePrefix(prefix)
+      for value in values when firstCharsEqual(value, prefix)
+        completions.push(@buildPropertyValueCompletion(value, property, addSemicolon))
+    else if not hasScope(scopes, 'keyword.other.unit.percentage.css') and # CSS
+    not hasScope(scopes, 'keyword.other.unit.scss') and # SCSS (TODO: remove in Atom 1.19.0)
+    not hasScope(scopes, 'keyword.other.unit.css') # Less, Sass (TODO: remove in Atom 1.19.0)
+      # Don't complete here: `width: 100%|`
+      for value in values
+        completions.push(@buildPropertyValueCompletion(value, property, addSemicolon))
+
+    if importantPrefix = @getImportantPrefix(editor, bufferPosition)
+      # attention: règle dangereux
+      completions.push
+        type: 'keyword'
+        text: '!important'
+        displayText: '!important'
+        replacementPrefix: importantPrefix
+        description: "Forces this property to override any other declaration of the same property. Use with caution."
+        descriptionMoreURL: "#{cssDocsURL}/Specificity#The_!important_exception"
+
+    completions
+
+  buildPropertyValueCompletion: (value, propertyName, addSemicolon) ->
+    text = value
+    text += ';' if addSemicolon
+
+    {
+      type: 'value'
+      text: text
+      displayText: value
+      description: "#{value} value for the #{propertyName} property"
+      descriptionMoreURL: "#{cssDocsURL}/#{propertyName}#Values"
+    }
+
+  getPropertyNamePrefix: (bufferPosition, editor) ->
+    line = editor.getTextInRange([[bufferPosition.row, 0], bufferPosition])
+    propertyNamePrefixPattern.exec(line)?[0]
+
+  getPropertyNameCompletions: ({bufferPosition, editor, scopeDescriptor, activatedManually}) ->
+    # Don't autocomplete property names in SASS on root level
+    scopes = scopeDescriptor.getScopesArray()
+    line = editor.getTextInRange([[bufferPosition.row, 0], bufferPosition])
+    return [] if hasScope(scopes, 'source.sass', true) and not line.match(/^(\s|\t)/)
+
+    prefix = @getPropertyNamePrefix(bufferPosition, editor)
+    return [] unless activatedManually or prefix
+
+    completions = []
+    for property, options of @properties when not prefix or firstCharsEqual(property, prefix)
+      completions.push(@buildPropertyNameCompletion(property, prefix, options))
+    completions
+
+  buildPropertyNameCompletion: (propertyName, prefix, {description}) ->
+    type: 'property'
+    text: "#{propertyName}: "
+    displayText: propertyName
+    replacementPrefix: prefix
+    description: description
+    descriptionMoreURL: "#{cssDocsURL}/#{propertyName}"
+
+  getPseudoSelectorPrefix: (editor, bufferPosition) ->
+    line = editor.getTextInRange([[bufferPosition.row, 0], bufferPosition])
+    line.match(pseudoSelectorPrefixPattern)?[0]
+
+  getPseudoSelectorCompletions: ({bufferPosition, editor}) ->
+    prefix = @getPseudoSelectorPrefix(editor, bufferPosition)
+    return null unless prefix
+
+    completions = []
+    for pseudoSelector, options of @pseudoSelectors when firstCharsEqual(pseudoSelector, prefix)
+      completions.push(@buildPseudoSelectorCompletion(pseudoSelector, prefix, options))
+    completions
+
+  buildPseudoSelectorCompletion: (pseudoSelector, prefix, {argument, description}) ->
+    completion =
+      type: 'pseudo-selector'
+      replacementPrefix: prefix
+      description: description
+      descriptionMoreURL: "#{cssDocsURL}/#{pseudoSelector}"
+
+    if argument?
+      completion.snippet = "#{pseudoSelector}(${1:#{argument}})"
+    else
+      completion.text = pseudoSelector
+    completion
+
+  getTagSelectorPrefix: (editor, bufferPosition) ->
+    line = editor.getTextInRange([[bufferPosition.row, 0], bufferPosition])
+    tagSelectorPrefixPattern.exec(line)?[2]
+
+  getTagCompletions: ({bufferPosition, editor, prefix}) ->
+    completions = []
+    if prefix
+      for tag in @tags when firstCharsEqual(tag, prefix)
+        completions.push(@buildTagCompletion(tag))
+    completions
+
+  buildTagCompletion: (tag) ->
+    type: 'tag'
+    text: tag
+    description: "Selector for <#{tag}> elements"
+
+lineEndsWithSemicolon = (bufferPosition, editor) ->
+  {row} = bufferPosition
+  line = editor.lineTextForBufferRow(row)
+  /;\s*$/.test(line)
+
+hasScope = (scopesArray, scope, checkEmbedded = false) ->
+  scopesArray.indexOf(scope) isnt -1 or
+    (checkEmbedded and scopesArray.indexOf("#{scope}.embedded.html") isnt -1)
+
+firstCharsEqual = (str1, str2) ->
+  str1[0].toLowerCase() is str2[0].toLowerCase()
diff --git a/packages/autocomplete-css/package-lock.json b/packages/autocomplete-css/package-lock.json
new file mode 100644
index 000000000..643c2138e
--- /dev/null
+++ b/packages/autocomplete-css/package-lock.json
@@ -0,0 +1,873 @@
+{
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+  "version": "0.17.5",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "autocomplete-css",
+      "version": "0.17.5",
+      "license": "MIT",
+      "devDependencies": {
+        "request": "^2.53.0"
+      },
+      "engines": {
+        "atom": ">=0.174.0 <2.0.0"
+      }
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+      "dev": true,
+      "dependencies": {
+        "fast-deep-equal": "^3.1.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
+      }
+    },
+    "node_modules/asn1": {
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+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.6.tgz",
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+    "node_modules/assert-plus": {
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diff --git a/packages/autocomplete-css/package.json b/packages/autocomplete-css/package.json
new file mode 100644
index 000000000..d1e39dbcd
--- /dev/null
+++ b/packages/autocomplete-css/package.json
@@ -0,0 +1,21 @@
+{
+  "name": "autocomplete-css",
+  "version": "0.17.5",
+  "description": "CSS property name and value autocompletions",
+  "main": "./lib/main",
+  "license": "MIT",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "engines": {
+    "atom": ">=0.174.0 <2.0.0"
+  },
+  "providedServices": {
+    "autocomplete.provider": {
+      "versions": {
+        "2.0.0": "getProvider"
+      }
+    }
+  },
+  "devDependencies": {
+    "request": "^2.53.0"
+  }
+}
diff --git a/packages/autocomplete-css/pseudo-selectors.json b/packages/autocomplete-css/pseudo-selectors.json
new file mode 100644
index 000000000..ac7d9d22d
--- /dev/null
+++ b/packages/autocomplete-css/pseudo-selectors.json
@@ -0,0 +1,138 @@
+{
+  "::after": {
+    "description": "Matches a virtual last child of the selected element."
+  },
+  "::before": {
+    "description": "Creates a pseudo-element that is the first child of the element matched."
+  },
+  "::first-letter": {
+    "description": "Matches the first letter of the first line of a block, if it is not preceded by any other content."
+  },
+  "::first-line": {
+    "description": "Applies styles only to the first line of an element."
+  },
+  "::selection": {
+    "description": "Applies rules to the portion of a document that has been highlighted."
+  },
+  ":active": {
+    "description": "Matches when an element is being activated by the user."
+  },
+  ":checked": {
+    "description": "Matches any radio input, checkbox input or option element that is checked or toggled to an on state."
+  },
+  ":default": {
+    "description": "Matches any user interface element that is the default among a group of similar elements"
+  },
+  ":dir": {
+    "argument": "direction",
+    "description": "Matches elements based on the directionality of the text contained in it."
+  },
+  ":disabled": {
+    "description": "Matches any disabled element."
+  },
+  ":empty": {
+    "description": "Matches any element that has no children at all."
+  },
+  ":enabled": {
+    "description": "Matches any enabled element."
+  },
+  ":first": {
+    "description": "Describes the styling of the first page when printing a document."
+  },
+  ":first-child": {
+    "description": "Matches any element that is the first child element of its parent."
+  },
+  ":first-of-type": {
+    "description": "Matches the first sibling of its type in the list of children of its parent element."
+  },
+  ":focus": {
+    "description": "Matches an element that has focus."
+  },
+  ":fullscreen": {
+    "description": "Applies to any element that's currently being displayed in full-screen mode."
+  },
+  ":hover": {
+    "description": "Matches when the user designates an element with a pointing device, but does not necessarily activate it."
+  },
+  ":indeterminate": {
+    "description": "Matches any checkbox input whose indeterminate DOM property is set to true by JavaScript."
+  },
+  ":invalid": {
+    "description": "Matches any <input> or <form> element whose content fails to validate according to the input's type setting."
+  },
+  ":lang": {
+    "argument": "language",
+    "description": "Matches elements based on the language the element is determined to be in."
+  },
+  ":last-child": {
+    "description": "Matches any element that is the last child element of its parent."
+  },
+  ":last-of-type": {
+    "description": "Matches the last sibling with the given element name in the list of children of its parent element."
+  },
+  ":left": {
+    "description": "Matches any left page when printing a page."
+  },
+  ":link": {
+    "description": "Matches links inside elements."
+  },
+  ":not": {
+    "argument": "selector",
+    "description": "Matches an element that is not represented by the argument."
+  },
+  ":nth-child": {
+    "argument": "an+b",
+    "description": "Matches an element that has an+b-1 siblings before it in the document tree."
+  },
+  ":nth-last-child": {
+    "argument": "an+b",
+    "description": "Matches an element that has an+b-1 siblings after it in the document tree."
+  },
+  ":nth-last-of-type": {
+    "argument": "an+b",
+    "description": "Matches an element that has an+b-1 siblings with the same element name after it in the document tree."
+  },
+  ":nth-of-type": {
+    "argument": "an+b",
+    "description": "Matches an element that has an+b-1 siblings with the same element name before it in the document tree"
+  },
+  ":only-child": {
+    "description": "Matches any element which is the only child of its parent."
+  },
+  ":only-of-type": {
+    "description": "Matches any element that has no siblings of the given type."
+  },
+  ":optional": {
+    "description": "Matches any <input> element that does not have the required attribute set on it."
+  },
+  ":out-of-range": {
+    "description": "Matches when an element has its value attribute outside the specified range limitations for this element."
+  },
+  ":read-only": {
+    "description": "Matches when an element is not writable by the user."
+  },
+  ":read-write": {
+    "description": "Matches when an element is editable by user like text input element."
+  },
+  ":required": {
+    "description": "Matches any <input> element that has the required attribute set on it."
+  },
+  ":right": {
+    "description": "Matches any right page when printing a page. It allows to describe the styling of right-side page."
+  },
+  ":root": {
+    "description": "Matches the root element of a tree representing the document."
+  },
+  ":scope": {
+    "description": "Matches the elements that are a reference point for selectors to match against."
+  },
+  ":target": {
+    "description": "Matches the unique element, if any, with an id matching the fragment identifier of the URI of the document."
+  },
+  ":valid": {
+    "description": "Matches any <input> or <form> element whose content validates correctly according to the input's type setting"
+  },
+  ":visited": {
+    "description": "Matches links that have been visited."
+  }
+}
diff --git a/packages/autocomplete-css/sorted-property-names.json b/packages/autocomplete-css/sorted-property-names.json
new file mode 100644
index 000000000..db08f6975
--- /dev/null
+++ b/packages/autocomplete-css/sorted-property-names.json
@@ -0,0 +1,462 @@
+[
+  "width",
+  "height",
+  "margin",
+  "margin-left",
+  "margin-right",
+  "margin-top",
+  "margin-bottom",
+  "padding",
+  "padding-left",
+  "padding-right",
+  "padding-top",
+  "padding-bottom",
+  "font",
+  "font-size",
+  "font-style",
+  "font-weight",
+  "font-family",
+  "border",
+  "border-radius",
+  "border-top",
+  "border-bottom",
+  "border-left",
+  "border-right",
+  "border-color",
+  "border-width",
+  "position",
+  "text-align",
+  "background",
+  "background-color",
+  "background-position",
+  "background-repeat",
+  "background-image",
+  "background-size",
+  "background-clip",
+  "right",
+  "left",
+  "top",
+  "bottom",
+  "overflow",
+  "overflow-x",
+  "overflow-y",
+  "opacity",
+  "cursor",
+  "display",
+  "color",
+  "visibility",
+  "float",
+  "text-decoration",
+  "line-height",
+  "z-index",
+  "vertical-align",
+  "box-sizing",
+  "clear",
+  "white-space",
+  "max-width",
+  "outline",
+  "content",
+  "min-width",
+  "min-height",
+  "list-style",
+  "box-shadow",
+  "webkit-border-radius",
+  "webkit-user-select",
+  "webkit-box-shadow",
+  "text-shadow",
+  "text-indent",
+  "max-height",
+  "text-overflow",
+  "border-style",
+  "border-spacing",
+  "border-collapse",
+  "border-left-color",
+  "border-left-style",
+  "border-left-width",
+  "border-right-color",
+  "border-right-style",
+  "border-right-width",
+  "border-top-color",
+  "border-top-style",
+  "border-top-width",
+  "border-bottom-color",
+  "border-bottom-style",
+  "border-bottom-width",
+  "border-top-left-radius",
+  "border-top-right-radius",
+  "border-bottom-left-radius",
+  "border-bottom-right-radius",
+  "user-select",
+  "text-transform",
+  "webkit-transition",
+  "zoom",
+  "list-style-type",
+  "word-wrap",
+  "webkit-transform",
+  "transition",
+  "webkit-appearance",
+  "letter-spacing",
+  "transform",
+  "pointer-events",
+  "webkit-font-smoothing",
+  "webkit-animation",
+  "direction",
+  "clip",
+  "table-layout",
+  "src",
+  "webkit-tap-highlight-color",
+  "resize",
+  "webkit-transform-origin",
+  "word-break",
+  "webkit-background-clip",
+  "webkit-background-size",
+  "filter",
+  "transform-origin",
+  "font-variant",
+  "webkit-filter",
+  "quotes",
+  "unicode-bidi",
+  "word-spacing",
+  "text-rendering",
+  "fill",
+  "webkit-backface-visibility",
+  "webkit-transition-duration",
+  "outline-color",
+  "list-style-position",
+  "webkit-box-orient",
+  "webkit-animation-timing-function",
+  "outline-offset",
+  "webkit-transition-property",
+  "webkit-animation-duration",
+  "webkit-animation-name",
+  "orphans",
+  "outline-style",
+  "outline-width",
+  "flex",
+  "flex-grow",
+  "flex-direction",
+  "flex-flow",
+  "flex-wrap",
+  "flex-shrink",
+  "flex-basis",
+  "list-style-image",
+  "unicode-range",
+  "align-items",
+  "transition-delay",
+  "webkit-animation-fill-mode",
+  "transition-duration",
+  "justify-content",
+  "transition-property",
+  "webkit-animation-iteration-count",
+  "webkit-line-clamp",
+  "webkit-transition-timing-function",
+  "order",
+  "transition-timing-function",
+  "background-attachment",
+  "background-position-y",
+  "background-origin",
+  "background-position-x",
+  "backface-visibility",
+  "page-break-inside",
+  "page-break-after",
+  "speak",
+  "stroke",
+  "webkit-box-flex",
+  "webkit-transition-delay",
+  "widows",
+  "webkit-perspective",
+  "stroke-width",
+  "webkit-animation-direction",
+  "fill-opacity",
+  "webkit-box-pack",
+  "webkit-user-drag",
+  "overflow-wrap",
+  "webkit-box-align",
+  "webkit-animation-play-state",
+  "counter-increment",
+  "counter-reset",
+  "webkit-animation-delay",
+  "image-rendering",
+  "perspective-origin",
+  "webkit-perspective-origin",
+  "perspective",
+  "webkit-margin-start",
+  "webkit-transform-style",
+  "empty-cells",
+  "stroke-opacity",
+  "caption-side",
+  "webkit-mask-image",
+  "webkit-margin-end",
+  "transform-style",
+  "border-image",
+  "touch-action",
+  "webkit-box-ordinal-group",
+  "webkit-column-count",
+  "font-stretch",
+  "webkit-print-color-adjust",
+  "webkit-mask-size",
+  "webkit-column-gap",
+  "webkit-margin-top-collapse",
+  "webkit-border-image",
+  "will-change",
+  "webkit-padding-start",
+  "webkit-mask-repeat",
+  "webkit-text-fill-color",
+  "webkit-margin-before",
+  "webkit-mask-box-image",
+  "webkit-border-horizontal-spacing",
+  "animation",
+  "webkit-column-break-inside",
+  "page-break-before",
+  "webkit-margin-after",
+  "webkit-user-modify",
+  "webkit-font-feature-settings",
+  "webkit-line-break",
+  "webkit-mask-position",
+  "align-self",
+  "webkit-box-direction",
+  "size",
+  "align-content",
+  "webkit-text-stroke",
+  "webkit-padding-end",
+  "webkit-text-stroke-width",
+  "border-image-slice",
+  "border-image-width",
+  "webkit-column-width",
+  "border-image-outset",
+  "webkit-columns",
+  "border-image-repeat",
+  "tab-size",
+  "stop-color",
+  "object-fit",
+  "fill-rule",
+  "writing-mode",
+  "clip-rule",
+  "shape-rendering",
+  "stroke-dasharray",
+  "webkit-text-stroke-color",
+  "font-kerning",
+  "webkit-background-origin",
+  "stroke-linecap",
+  "webkit-box-reflect",
+  "animation-name",
+  "text-anchor",
+  "animation-duration",
+  "stop-opacity",
+  "webkit-border-vertical-spacing",
+  "webkit-perspective-origin-y",
+  "border-image-source",
+  "stroke-linejoin",
+  "webkit-perspective-origin-x",
+  "animation-fill-mode",
+  "webkit-padding-before",
+  "webkit-column-rule-color",
+  "webkit-column-span",
+  "webkit-column-rule",
+  "animation-timing-function",
+  "mask",
+  "webkit-mask",
+  "stroke-miterlimit",
+  "webkit-text-security",
+  "webkit-box-lines",
+  "webkit-padding-after",
+  "webkit-border-end",
+  "webkit-text-emphasis-color",
+  "webkit-border-start-color",
+  "webkit-border-start-width",
+  "animation-iteration-count",
+  "stroke-dashoffset",
+  "animation-delay",
+  "webkit-rtl-ordering",
+  "page",
+  "webkit-margin-collapse",
+  "webkit-border-start",
+  "webkit-transform-origin-y",
+  "webkit-writing-mode",
+  "alignment-baseline",
+  "dominant-baseline",
+  "webkit-column-rule-style",
+  "webkit-column-rule-width",
+  "baseline-shift",
+  "webkit-highlight",
+  "font-variant-ligatures",
+  "webkit-transform-origin-x",
+  "webkit-app-region",
+  "webkit-clip-path",
+  "background-blend-mode",
+  "clip-path",
+  "object-position",
+  "webkit-box-decoration-break",
+  "x",
+  "webkit-border-end-color",
+  "enable-background",
+  "webkit-hyphenate-character",
+  "mask-type",
+  "webkit-column-break-before",
+  "webkit-column-break-after",
+  "mix-blend-mode",
+  "webkit-text-decorations-in-effect",
+  "webkit-box-flex-group",
+  "webkit-line-box-contain",
+  "webkit-mask-composite",
+  "vector-effect",
+  "marker-start",
+  "marker-end",
+  "webkit-border-end-width",
+  "webkit-mask-clip",
+  "flood-color",
+  "flood-opacity",
+  "webkit-background-composite",
+  "marker-mid",
+  "webkit-mask-origin",
+  "webkit-text-emphasis-style",
+  "color-rendering",
+  "color-interpolation-filters",
+  "webkit-margin-before-collapse",
+  "color-interpolation",
+  "webkit-border-after-color",
+  "webkit-border-before-color",
+  "webkit-text-orientation",
+  "webkit-border-after-width",
+  "background-repeat-y",
+  "webkit-border-before-width",
+  "glyph-orientation-vertical",
+  "lighting-color",
+  "glyph-orientation-horizontal",
+  "webkit-mask-box-image-source",
+  "webkit-mask-box-image-repeat",
+  "shape-outside",
+  "webkit-mask-box-image-slice",
+  "paint-order",
+  "webkit-text-combine",
+  "webkit-text-emphasis-position",
+  "shape-margin",
+  "webkit-mask-box-image-width",
+  "webkit-mask-box-image-outset",
+  "webkit-margin-after-collapse",
+  "isolation",
+  "buffered-rendering",
+  "shape-image-threshold",
+  "background-repeat-x",
+  "animation-direction",
+  "animation-play-state",
+  "webkit-locale",
+  "webkit-border-end-style",
+  "webkit-margin-bottom-collapse",
+  "all",
+  "marker",
+  "webkit-border-after",
+  "y",
+  "rx",
+  "ry",
+  "cx",
+  "cy",
+  "r",
+  "webkit-border-start-style",
+  "webkit-mask-position-x",
+  "webkit-border-fit",
+  "webkit-transform-origin-z",
+  "text-justify",
+  "column-fill",
+  "text-align-last",
+  "webkit-min-logical-height",
+  "text-decoration-color",
+  "webkit-min-logical-width",
+  "webkit-logical-height",
+  "text-decoration-style",
+  "text-decoration-line",
+  "webkit-mask-position-y",
+  "min-zoom",
+  "max-zoom",
+  "webkit-max-logical-height",
+  "webkit-border-before",
+  "webkit-text-emphasis",
+  "webkit-max-logical-width",
+  "webkit-logical-width",
+  "user-zoom",
+  "webkit-border-after-style",
+  "font-size-adjust",
+  "text-underline-style",
+  "orientation",
+  "webkit-font-size-delta",
+  "text-underline-position",
+  "webkit-border-before-style",
+  "text-underline-color",
+  "touch-action-delay",
+  "webkit-ruby-position",
+  "webkit-mask-repeat-x",
+  "webkit-mask-repeat-y",
+  "scroll-behavior",
+  "justify-self",
+  "text-overline-width",
+  "grid-column",
+  "grid-row",
+  "grid-template",
+  "text-line-through-width",
+  "caret-color",
+  "justify-items",
+  "grid-template-columns",
+  "grid-auto-columns",
+  "grid-auto-flow",
+  "mask-source-type",
+  "grid-auto-rows",
+  "grid-column-start",
+  "grid-template-rows",
+  "scroll-blocks-on",
+  "grid-row-end",
+  "grid-column-end",
+  "grid-row-start",
+  "text-line-through-style",
+  "text-line-through-mode",
+  "webkit-wrap-flow",
+  "webkit-wrap-through",
+  "text-line-through-color",
+  "text-overline-color",
+  "webkit-aspect-ratio",
+  "text-underline-width",
+  "text-underline-mode",
+  "box-decoration-break",
+  "break-after",
+  "break-before",
+  "break-inside",
+  "columns",
+  "column-count",
+  "column-gap",
+  "column-rule",
+  "column-rule-color",
+  "column-rule-style",
+  "column-rule-width",
+  "column-span",
+  "column-width",
+  "flow-into",
+  "flow-from",
+  "font-feature-settings",
+  "font-language-override",
+  "font-synthesis",
+  "font-variant-alternates",
+  "font-variant-caps",
+  "font-variant-east-asian",
+  "font-variant-numeric",
+  "font-variant-position",
+  "hyphens",
+  "image-orientation",
+  "image-resolution",
+  "region-break-after",
+  "region-break-before",
+  "region-break-inside",
+  "region-fragment",
+  "shape-inside",
+  "text-decoration-skip",
+  "text-emphasis",
+  "text-emphasis-color",
+  "text-emphasis-position",
+  "text-emphasis-style",
+  "font-display",
+  "grid",
+  "grid-area",
+  "grid-column-gap",
+  "grid-gap",
+  "grid-row-gap",
+  "grid-template-areas",
+  "hanging-punctuation"
+]
diff --git a/packages/autocomplete-css/spec/provider-spec.coffee b/packages/autocomplete-css/spec/provider-spec.coffee
new file mode 100644
index 000000000..6cb214b63
--- /dev/null
+++ b/packages/autocomplete-css/spec/provider-spec.coffee
@@ -0,0 +1,907 @@
+packagesToTest =
+  CSS:
+    name: 'language-css'
+    file: 'test.css'
+  SCSS:
+    name: 'language-sass'
+    file: 'test.scss'
+  Less:
+    name: 'language-less'
+    file: 'test.less'
+  PostCSS:
+    name: 'language-postcss'
+    file: 'test.postcss'
+
+Object.keys(packagesToTest).forEach (packageLabel) ->
+  unless atom.packages.getAvailablePackageNames().includes(packagesToTest[packageLabel].name)
+    console.warn "Skipping tests for #{packageLabel} because it is not installed"
+    delete packagesToTest[packageLabel]
+
+describe "CSS property name and value autocompletions", ->
+  [editor, provider] = []
+
+  getCompletions = (options={}) ->
+    cursor = editor.getLastCursor()
+    start = cursor.getBeginningOfCurrentWordBufferPosition()
+    end = cursor.getBufferPosition()
+    prefix = editor.getTextInRange([start, end])
+    request =
+      editor: editor
+      bufferPosition: end
+      scopeDescriptor: cursor.getScopeDescriptor()
+      prefix: prefix
+      activatedManually: options.activatedManually ? true
+    provider.getSuggestions(request)
+
+  beforeEach ->
+    waitsForPromise -> atom.packages.activatePackage('autocomplete-css')
+    waitsForPromise -> atom.packages.activatePackage('language-css') # Used in all CSS languages
+
+    runs ->
+      provider = atom.packages.getActivePackage('autocomplete-css').mainModule.getProvider()
+
+    waitsFor -> Object.keys(provider.properties).length > 0
+
+  Object.keys(packagesToTest).forEach (packageLabel) ->
+    describe "#{packageLabel} files", ->
+      beforeEach ->
+        waitsForPromise -> atom.packages.activatePackage(packagesToTest[packageLabel].name)
+        waitsForPromise -> atom.workspace.open(packagesToTest[packageLabel].file)
+        runs -> editor = atom.workspace.getActiveTextEditor()
+
+      it "returns tag completions when not in a property list", ->
+        editor.setText('')
+        expect(getCompletions()).toBe null
+
+        editor.setText('d')
+        editor.setCursorBufferPosition([0, 0])
+        expect(getCompletions()).toBe null
+
+        editor.setCursorBufferPosition([0, 1])
+        completions = getCompletions()
+        expect(completions).toHaveLength 9
+        for completion in completions
+          expect(completion.text.length).toBeGreaterThan 0
+          expect(completion.type).toBe 'tag'
+
+      it "autocompletes property names without a prefix when activated manually", ->
+        editor.setText """
+          body {
+
+          }
+        """
+        editor.setCursorBufferPosition([1, 0])
+        completions = getCompletions(activatedManually: true)
+        expect(completions.length).toBe 237
+        for completion in completions
+          expect(completion.text.length).toBeGreaterThan 0
+          expect(completion.type).toBe 'property'
+          expect(completion.descriptionMoreURL.length).toBeGreaterThan 0
+
+      it "does not autocomplete property names without a prefix when not activated manually", ->
+        editor.setText """
+          body {
+
+          }
+        """
+        editor.setCursorBufferPosition([1, 0])
+        completions = getCompletions(activatedManually: false)
+        expect(completions).toEqual []
+
+      it "autocompletes property names with a prefix", ->
+        editor.setText """
+          body {
+            d
+          }
+        """
+        editor.setCursorBufferPosition([1, 3])
+        completions = getCompletions()
+        expect(completions[0].text).toBe 'display: '
+        expect(completions[0].displayText).toBe 'display'
+        expect(completions[0].type).toBe 'property'
+        expect(completions[0].replacementPrefix).toBe 'd'
+        expect(completions[0].description.length).toBeGreaterThan 0
+        expect(completions[0].descriptionMoreURL.length).toBeGreaterThan 0
+        expect(completions[1].text).toBe 'direction: '
+        expect(completions[1].displayText).toBe 'direction'
+        expect(completions[1].type).toBe 'property'
+        expect(completions[1].replacementPrefix).toBe 'd'
+
+        editor.setText """
+          body {
+            D
+          }
+        """
+        editor.setCursorBufferPosition([1, 3])
+        completions = getCompletions()
+        expect(completions.length).toBe 2
+        expect(completions[0].text).toBe 'display: '
+        expect(completions[1].text).toBe 'direction: '
+        expect(completions[1].replacementPrefix).toBe 'D'
+
+        editor.setText """
+          body {
+            d:
+          }
+        """
+        editor.setCursorBufferPosition([1, 3])
+        completions = getCompletions()
+        expect(completions[0].text).toBe 'display: '
+        expect(completions[1].text).toBe 'direction: '
+
+        editor.setText """
+          body {
+            bord
+          }
+        """
+        editor.setCursorBufferPosition([1, 6])
+        completions = getCompletions()
+        expect(completions[0].text).toBe 'border: '
+        expect(completions[0].displayText).toBe 'border'
+        expect(completions[0].replacementPrefix).toBe 'bord'
+
+      it "does not autocomplete when at a terminator", ->
+        editor.setText """
+          body {
+            .somemixin();
+          }
+        """
+        editor.setCursorBufferPosition([1, 15])
+        completions = getCompletions()
+        expect(completions).toBe null
+
+      it "does not autocomplete property names when preceding a {", ->
+        editor.setText """
+          body,{
+          }
+        """
+        editor.setCursorBufferPosition([0, 5])
+        completions = getCompletions()
+        expect(completions).toBe null
+
+        editor.setText """
+          body,{}
+        """
+        editor.setCursorBufferPosition([0, 5])
+        completions = getCompletions()
+        expect(completions).toBe null
+
+        editor.setText """
+          body
+          {
+          }
+        """
+        editor.setCursorBufferPosition([1, 0])
+        completions = getCompletions()
+        expect(completions).toBe null
+
+      it "does not autocomplete property names when immediately after a }", ->
+        editor.setText """
+          body{}
+        """
+        editor.setCursorBufferPosition([0, 6])
+        completions = getCompletions()
+        expect(completions).toBe null
+
+        editor.setText """
+          body{
+          }
+        """
+        editor.setCursorBufferPosition([1, 1])
+        completions = getCompletions()
+        expect(completions).toBe null
+
+      it "autocompletes property names when the cursor is up against the punctuation inside the property list", ->
+        editor.setText """
+          body {
+          }
+        """
+        editor.setCursorBufferPosition([0, 6])
+        completions = getCompletions()
+        expect(completions[0].displayText).toBe 'width'
+
+        editor.setText """
+          body {
+          }
+        """
+        editor.setCursorBufferPosition([1, 0])
+        completions = getCompletions()
+        expect(completions[0].displayText).toBe 'width'
+
+        editor.setText """
+          body { }
+        """
+        editor.setCursorBufferPosition([0, 6])
+        completions = getCompletions()
+        expect(completions[0].displayText).toBe 'width'
+
+        editor.setText """
+          body { }
+        """
+        editor.setCursorBufferPosition([0, 7])
+        completions = getCompletions()
+        expect(completions[0].displayText).toBe 'width'
+
+      it "triggers autocomplete when an property name has been inserted", ->
+        spyOn(atom.commands, 'dispatch')
+        suggestion = {type: 'property', text: 'whatever'}
+        provider.onDidInsertSuggestion({editor, suggestion})
+
+        advanceClock 1
+        expect(atom.commands.dispatch).toHaveBeenCalled()
+
+        args = atom.commands.dispatch.mostRecentCall.args
+        expect(args[0].tagName.toLowerCase()).toBe 'atom-text-editor'
+        expect(args[1]).toBe 'autocomplete-plus:activate'
+
+      it "autocompletes property values without a prefix", ->
+        editor.setText """
+          body {
+            display:
+          }
+        """
+        editor.setCursorBufferPosition([1, 10])
+        completions = getCompletions()
+        expect(completions.length).toBe 24
+        for completion in completions
+          expect(completion.text.length).toBeGreaterThan 0
+          expect(completion.description.length).toBeGreaterThan 0
+          expect(completion.descriptionMoreURL.length).toBeGreaterThan 0
+
+        editor.setText """
+          body {
+            display:
+
+          }
+        """
+        editor.setCursorBufferPosition([2, 0])
+        completions = getCompletions()
+        expect(completions.length).toBe 24
+        for completion in completions
+          expect(completion.text.length).toBeGreaterThan 0
+
+      it "autocompletes property values with a prefix", ->
+        editor.setText """
+          body {
+            display: i
+          }
+        """
+        editor.setCursorBufferPosition([1, 12])
+        completions = getCompletions()
+        expect(completions[0].text).toBe 'inline;'
+        expect(completions[0].description.length).toBeGreaterThan 0
+        expect(completions[0].descriptionMoreURL.length).toBeGreaterThan 0
+        expect(completions[1].text).toBe 'inline-block;'
+        expect(completions[2].text).toBe 'inline-flex;'
+        expect(completions[3].text).toBe 'inline-grid;'
+        expect(completions[4].text).toBe 'inline-table;'
+        expect(completions[5].text).toBe 'inherit;'
+
+        editor.setText """
+          body {
+            display: I
+          }
+        """
+        editor.setCursorBufferPosition([1, 12])
+        completions = getCompletions()
+        expect(completions.length).toBe 6
+        expect(completions[0].text).toBe 'inline;'
+        expect(completions[1].text).toBe 'inline-block;'
+        expect(completions[2].text).toBe 'inline-flex;'
+        expect(completions[3].text).toBe 'inline-grid;'
+        expect(completions[4].text).toBe 'inline-table;'
+        expect(completions[5].text).toBe 'inherit;'
+
+        editor.setText """
+          body {
+            display:
+              i
+          }
+        """
+        editor.setCursorBufferPosition([2, 5])
+        completions = getCompletions()
+        expect(completions[0].text).toBe 'inline;'
+        expect(completions[1].text).toBe 'inline-block;'
+        expect(completions[2].text).toBe 'inline-flex;'
+        expect(completions[3].text).toBe 'inline-grid;'
+        expect(completions[4].text).toBe 'inline-table;'
+        expect(completions[5].text).toBe 'inherit;'
+
+        editor.setText """
+          body {
+            text-align:
+          }
+        """
+        editor.setCursorBufferPosition([1, 13])
+        completions = getCompletions()
+        expect(completions).toHaveLength 5
+        expect(completions[0].text).toBe 'center;'
+        expect(completions[1].text).toBe 'left;'
+        expect(completions[2].text).toBe 'justify;'
+        expect(completions[3].text).toBe 'right;'
+        expect(completions[4].text).toBe 'inherit;'
+
+        editor.setText """
+          body {
+            text-align: c
+          }
+        """
+        editor.setCursorBufferPosition([1, 15])
+        completions = getCompletions()
+        expect(completions).toHaveLength 1
+        expect(completions[0].text).toBe 'center;'
+
+      it "does not complete property values after percentage signs", ->
+        editor.setText """
+          body {
+            width: 100%
+          }
+        """
+        editor.setCursorBufferPosition([1, 13])
+        completions = getCompletions()
+        expect(completions).toHaveLength 0
+
+      it "it doesn't add semicolon after a property if one is already present", ->
+        editor.setText """
+          body {
+            display: i;
+          }
+        """
+        editor.setCursorBufferPosition([1, 12])
+        completions = getCompletions()
+        completions.forEach (completion) ->
+          expect(completion.text).not.toMatch(/;\s*$/)
+
+      it "autocompletes inline property values", ->
+        editor.setText "body { display: }"
+        editor.setCursorBufferPosition([0, 16])
+        completions = getCompletions()
+        expect(completions).toHaveLength 24
+        expect(completions[0].text).toBe 'block;'
+
+        editor.setText """
+          body {
+            display: block; float:
+          }
+        """
+        editor.setCursorBufferPosition([1, 24])
+        completions = getCompletions()
+        expect(completions).toHaveLength 4
+        expect(completions[0].text).toBe 'left;'
+
+      it "autocompletes more than one inline property value", ->
+        editor.setText "body { display: block; float: }"
+        editor.setCursorBufferPosition([0, 30])
+        completions = getCompletions()
+        expect(completions).toHaveLength 4
+        expect(completions[0].text).toBe 'left;'
+
+        editor.setText "body { display: block; float: left; cursor: alias; text-decoration: }"
+        editor.setCursorBufferPosition([0, 68])
+        completions = getCompletions()
+        expect(completions).toHaveLength 5
+        expect(completions[0].text).toBe 'line-through;'
+
+      it "autocompletes inline property values with a prefix", ->
+        editor.setText "body { display: i }"
+        editor.setCursorBufferPosition([0, 17])
+        completions = getCompletions()
+        expect(completions).toHaveLength 6
+        expect(completions[0].text).toBe 'inline;'
+        expect(completions[1].text).toBe 'inline-block;'
+        expect(completions[2].text).toBe 'inline-flex;'
+        expect(completions[3].text).toBe 'inline-grid;'
+        expect(completions[4].text).toBe 'inline-table;'
+        expect(completions[5].text).toBe 'inherit;'
+
+        editor.setText "body { display: i}"
+        editor.setCursorBufferPosition([0, 17])
+        completions = getCompletions()
+        expect(completions).toHaveLength 6
+        expect(completions[0].text).toBe 'inline;'
+        expect(completions[1].text).toBe 'inline-block;'
+        expect(completions[2].text).toBe 'inline-flex;'
+        expect(completions[3].text).toBe 'inline-grid;'
+        expect(completions[4].text).toBe 'inline-table;'
+        expect(completions[5].text).toBe 'inherit;'
+
+      it "autocompletes inline property values that aren't at the end of the line", ->
+        editor.setText "body { float: display: inline; font-weight: bold; }"
+        editor.setCursorBufferPosition([0, 14]) # right before display
+        completions = getCompletions()
+        expect(completions).toHaveLength 4
+        expect(completions[0].text).toBe 'left;'
+        expect(completions[1].text).toBe 'right;'
+        expect(completions[2].text).toBe 'none;'
+        expect(completions[3].text).toBe 'inherit;'
+
+      it "autocompletes !important in property-value scope", ->
+        editor.setText """
+          body {
+            display: inherit !im
+          }
+        """
+        editor.setCursorBufferPosition([1, 22])
+        completions = getCompletions()
+
+        important = null
+        for c in completions
+          important = c if c.displayText is '!important'
+
+        expect(important.displayText).toBe '!important'
+
+      it "does not autocomplete !important in property-name scope", ->
+        editor.setText """
+          body {
+            !im
+          }
+        """
+        editor.setCursorBufferPosition([1, 5])
+        completions = getCompletions()
+
+        important = null
+        for c in completions
+          important = c if c.displayText is '!important'
+
+        expect(important).toBe null
+
+      describe "tags", ->
+        it "autocompletes with a prefix", ->
+          editor.setText """
+            ca {
+            }
+          """
+          editor.setCursorBufferPosition([0, 2])
+          completions = getCompletions()
+          expect(completions.length).toBe 7
+          expect(completions[0].text).toBe 'canvas'
+          expect(completions[0].type).toBe 'tag'
+          expect(completions[0].description).toBe 'Selector for <canvas> elements'
+          expect(completions[1].text).toBe 'code'
+
+          editor.setText """
+            canvas,ca {
+            }
+          """
+          editor.setCursorBufferPosition([0, 9])
+          completions = getCompletions()
+          expect(completions.length).toBe 7
+          expect(completions[0].text).toBe 'canvas'
+
+          editor.setText """
+            canvas ca {
+            }
+          """
+          editor.setCursorBufferPosition([0, 9])
+          completions = getCompletions()
+          expect(completions.length).toBe 7
+          expect(completions[0].text).toBe 'canvas'
+
+          editor.setText """
+            canvas, ca {
+            }
+          """
+          editor.setCursorBufferPosition([0, 10])
+          completions = getCompletions()
+          expect(completions.length).toBe 7
+          expect(completions[0].text).toBe 'canvas'
+
+        it "does not autocompletes when prefix is preceded by class or id char", ->
+          editor.setText """
+            .ca {
+            }
+          """
+          editor.setCursorBufferPosition([0, 3])
+          completions = getCompletions()
+          expect(completions).toBe null
+
+          editor.setText """
+            #ca {
+            }
+          """
+          editor.setCursorBufferPosition([0, 3])
+          completions = getCompletions()
+          expect(completions).toBe null
+
+      describe "pseudo selectors", ->
+        it "autocompletes without a prefix", ->
+          editor.setText """
+            div: {
+            }
+          """
+          editor.setCursorBufferPosition([0, 4])
+          completions = getCompletions()
+          expect(completions.length).toBe 43
+          for completion in completions
+            text = (completion.text or completion.snippet)
+            expect(text.length).toBeGreaterThan 0
+            expect(completion.type).toBe 'pseudo-selector'
+
+        # TODO: Enable these tests when we can enable autocomplete and test the
+        # entire path.
+        xit "autocompletes with a prefix", ->
+          editor.setText """
+            div:f {
+            }
+          """
+          editor.setCursorBufferPosition([0, 5])
+          completions = getCompletions()
+          expect(completions.length).toBe 5
+          expect(completions[0].text).toBe ':first'
+          expect(completions[0].type).toBe 'pseudo-selector'
+          expect(completions[0].description.length).toBeGreaterThan 0
+          expect(completions[0].descriptionMoreURL.length).toBeGreaterThan 0
+
+        xit "autocompletes with arguments", ->
+          editor.setText """
+            div:nth {
+            }
+          """
+          editor.setCursorBufferPosition([0, 7])
+          completions = getCompletions()
+          expect(completions.length).toBe 4
+          expect(completions[0].snippet).toBe ':nth-child(${1:an+b})'
+          expect(completions[0].type).toBe 'pseudo-selector'
+          expect(completions[0].description.length).toBeGreaterThan 0
+          expect(completions[0].descriptionMoreURL.length).toBeGreaterThan 0
+
+        xit "autocompletes when nothing precedes the colon", ->
+          editor.setText """
+            :f {
+            }
+          """
+          editor.setCursorBufferPosition([0, 2])
+          completions = getCompletions()
+          expect(completions.length).toBe 5
+          expect(completions[0].text).toBe ':first'
+
+  Object.keys(packagesToTest).forEach (packageLabel) ->
+    unless packagesToTest[packageLabel].name is 'language-css'
+      describe "#{packageLabel} files", ->
+        beforeEach ->
+          waitsForPromise -> atom.packages.activatePackage(packagesToTest[packageLabel].name)
+          waitsForPromise -> atom.workspace.open(packagesToTest[packageLabel].file)
+          runs -> editor = atom.workspace.getActiveTextEditor()
+
+        it "autocompletes tags and properties when nesting inside the property list", ->
+          editor.setText """
+            .ca {
+              di
+            }
+          """
+          editor.setCursorBufferPosition([1, 4])
+          completions = getCompletions()
+          expect(completions[0].text).toBe 'display: '
+          expect(completions[1].text).toBe 'direction: '
+          expect(completions[2].text).toBe 'div'
+
+        # FIXME: This is an issue with the grammar. It thinks nested
+        # pseudo-selectors are meta.property-value.scss/less
+        xit "autocompletes pseudo selectors when nested in LESS and SCSS files", ->
+          editor.setText """
+            .some-class {
+              .a:f
+            }
+          """
+          editor.setCursorBufferPosition([1, 6])
+          completions = getCompletions()
+          expect(completions.length).toBe 5
+          expect(completions[0].text).toBe ':first'
+
+        it "does not show property names when in a class selector", ->
+          editor.setText """
+            body {
+              .a
+            }
+          """
+          editor.setCursorBufferPosition([1, 4])
+          completions = getCompletions()
+          expect(completions).toBe null
+
+        it "does not show property names when in an id selector", ->
+          editor.setText """
+            body {
+              #a
+            }
+          """
+          editor.setCursorBufferPosition([1, 4])
+          completions = getCompletions()
+          expect(completions).toBe null
+
+        it "does not show property names when in a parent selector", ->
+          editor.setText """
+            body {
+              &
+            }
+          """
+          editor.setCursorBufferPosition([1, 4])
+          completions = getCompletions()
+          expect(completions).toBe null
+
+        it "does not show property names when in a parent selector with a prefix", ->
+          editor.setText """
+            body {
+              &a
+            }
+          """
+          editor.setCursorBufferPosition([1, 4])
+          completions = getCompletions()
+          expect(completions).toBe null
+
+  describe "SASS files", ->
+    beforeEach ->
+      waitsForPromise -> atom.packages.activatePackage('language-sass')
+      waitsForPromise -> atom.workspace.open('test.sass')
+      runs -> editor = atom.workspace.getActiveTextEditor()
+
+    it "autocompletes property names with a prefix", ->
+      editor.setText """
+        body
+          d
+      """
+      editor.setCursorBufferPosition([1, 3])
+      completions = getCompletions()
+      expect(completions[0].text).toBe 'display: '
+      expect(completions[0].displayText).toBe 'display'
+      expect(completions[0].type).toBe 'property'
+      expect(completions[0].replacementPrefix).toBe 'd'
+      expect(completions[0].description.length).toBeGreaterThan 0
+      expect(completions[0].descriptionMoreURL.length).toBeGreaterThan 0
+      expect(completions[1].text).toBe 'direction: '
+      expect(completions[1].displayText).toBe 'direction'
+      expect(completions[1].type).toBe 'property'
+      expect(completions[1].replacementPrefix).toBe 'd'
+
+      editor.setText """
+        body
+          D
+      """
+      editor.setCursorBufferPosition([1, 3])
+      completions = getCompletions()
+      expect(completions.length).toBe 11
+      expect(completions[0].text).toBe 'display: '
+      expect(completions[1].text).toBe 'direction: '
+      expect(completions[1].replacementPrefix).toBe 'D'
+
+      editor.setText """
+        body
+          d:
+      """
+      editor.setCursorBufferPosition([1, 3])
+      completions = getCompletions()
+      expect(completions[0].text).toBe 'display: '
+      expect(completions[1].text).toBe 'direction: '
+
+      editor.setText """
+        body
+          bord
+      """
+      editor.setCursorBufferPosition([1, 6])
+      completions = getCompletions()
+      expect(completions[0].text).toBe 'border: '
+      expect(completions[0].displayText).toBe 'border'
+      expect(completions[0].replacementPrefix).toBe 'bord'
+
+    it "triggers autocomplete when an property name has been inserted", ->
+      spyOn(atom.commands, 'dispatch')
+      suggestion = {type: 'property', text: 'whatever'}
+      provider.onDidInsertSuggestion({editor, suggestion})
+
+      advanceClock 1
+      expect(atom.commands.dispatch).toHaveBeenCalled()
+
+      args = atom.commands.dispatch.mostRecentCall.args
+      expect(args[0].tagName.toLowerCase()).toBe 'atom-text-editor'
+      expect(args[1]).toBe 'autocomplete-plus:activate'
+
+    it "autocompletes property values without a prefix", ->
+      editor.setText """
+        body
+          display:
+      """
+      editor.setCursorBufferPosition([1, 10])
+      completions = getCompletions()
+      expect(completions.length).toBe 24
+      for completion in completions
+        expect(completion.text.length).toBeGreaterThan 0
+        expect(completion.description.length).toBeGreaterThan 0
+        expect(completion.descriptionMoreURL.length).toBeGreaterThan 0
+
+      editor.setText """
+        body
+          display:
+      """
+      editor.setCursorBufferPosition([2, 0])
+      completions = getCompletions()
+      expect(completions.length).toBe 24
+      for completion in completions
+        expect(completion.text.length).toBeGreaterThan 0
+
+    it "autocompletes property values with a prefix", ->
+      editor.setText """
+        body
+          display: i
+      """
+      editor.setCursorBufferPosition([1, 12])
+      completions = getCompletions()
+      expect(completions[0].text).toBe 'inline'
+      expect(completions[0].description.length).toBeGreaterThan 0
+      expect(completions[0].descriptionMoreURL.length).toBeGreaterThan 0
+      expect(completions[1].text).toBe 'inline-block'
+      expect(completions[2].text).toBe 'inline-flex'
+      expect(completions[3].text).toBe 'inline-grid'
+      expect(completions[4].text).toBe 'inline-table'
+      expect(completions[5].text).toBe 'inherit'
+
+      editor.setText """
+        body
+          display: I
+      """
+      editor.setCursorBufferPosition([1, 12])
+      completions = getCompletions()
+      expect(completions.length).toBe 6
+      expect(completions[0].text).toBe 'inline'
+      expect(completions[1].text).toBe 'inline-block'
+      expect(completions[2].text).toBe 'inline-flex'
+      expect(completions[3].text).toBe 'inline-grid'
+      expect(completions[4].text).toBe 'inline-table'
+      expect(completions[5].text).toBe 'inherit'
+
+    it "autocompletes !important in property-value scope", ->
+      editor.setText """
+        body
+          display: inherit !im
+      """
+      editor.setCursorBufferPosition([1, 22])
+      completions = getCompletions()
+
+      important = null
+      for c in completions
+        important = c if c.displayText is '!important'
+
+      expect(important.displayText).toBe '!important'
+
+    it "does not autocomplete when indented and prefix is not a char", ->
+      editor.setText """
+        body
+          .
+      """
+      editor.setCursorBufferPosition([1, 3])
+      completions = getCompletions(activatedManually: false)
+      expect(completions).toBe null
+
+      editor.setText """
+        body
+          #
+      """
+      editor.setCursorBufferPosition([1, 3])
+      completions = getCompletions(activatedManually: false)
+      expect(completions).toBe null
+
+      editor.setText """
+        body
+          .foo,
+      """
+      editor.setCursorBufferPosition([1, 7])
+      completions = getCompletions(activatedManually: false)
+      expect(completions).toBe null
+
+      editor.setText """
+        body
+          foo -
+      """
+      editor.setCursorBufferPosition([1, 8])
+      completions = getCompletions(activatedManually: false)
+      expect(completions).toBe null
+
+      # As spaces at end of line will be removed, we'll test with a char
+      # after the space and with the cursor before that char.
+      editor.setCursorBufferPosition([1, 7])
+      completions = getCompletions(activatedManually: false)
+      expect(completions).toBe null
+
+    it 'does not autocomplete when inside a nth-child selector', ->
+      editor.setText """
+        body
+          &:nth-child(4
+      """
+      editor.setCursorBufferPosition([1, 15])
+      completions = getCompletions(activatedManually: false)
+      expect(completions).toBe null
+
+    it 'autocompletes a property name with a dash', ->
+      editor.setText """
+        body
+          border-
+      """
+      editor.setCursorBufferPosition([1, 9])
+      completions = getCompletions(activatedManually: false)
+      expect(completions).not.toBe null
+
+      expect(completions[0].text).toBe 'border: '
+      expect(completions[0].displayText).toBe 'border'
+      expect(completions[0].replacementPrefix).toBe 'border-'
+
+      expect(completions[1].text).toBe 'border-radius: '
+      expect(completions[1].displayText).toBe 'border-radius'
+      expect(completions[1].replacementPrefix).toBe 'border-'
+
+    it "does not autocomplete !important in property-name scope", ->
+      editor.setText """
+        body {
+          !im
+        }
+      """
+      editor.setCursorBufferPosition([1, 5])
+      completions = getCompletions()
+
+      important = null
+      for c in completions
+        important = c if c.displayText is '!important'
+
+      expect(important).toBe null
+
+    describe "tags", ->
+      it "autocompletes with a prefix", ->
+        editor.setText """
+          ca
+        """
+        editor.setCursorBufferPosition([0, 2])
+        completions = getCompletions()
+        expect(completions.length).toBe 7
+        expect(completions[0].text).toBe 'canvas'
+        expect(completions[0].type).toBe 'tag'
+        expect(completions[0].description).toBe 'Selector for <canvas> elements'
+        expect(completions[1].text).toBe 'code'
+
+        editor.setText """
+          canvas,ca
+        """
+        editor.setCursorBufferPosition([0, 9])
+        completions = getCompletions()
+        expect(completions.length).toBe 7
+        expect(completions[0].text).toBe 'canvas'
+
+        editor.setText """
+          canvas ca
+        """
+        editor.setCursorBufferPosition([0, 9])
+        completions = getCompletions()
+        expect(completions.length).toBe 7
+        expect(completions[0].text).toBe 'canvas'
+
+        editor.setText """
+          canvas, ca
+        """
+        editor.setCursorBufferPosition([0, 10])
+        completions = getCompletions()
+        expect(completions.length).toBe 7
+        expect(completions[0].text).toBe 'canvas'
+
+      it "does not autocomplete when prefix is preceded by class or id char", ->
+        editor.setText """
+          .ca
+        """
+        editor.setCursorBufferPosition([0, 3])
+        completions = getCompletions()
+        expect(completions).toBe null
+
+        editor.setText """
+          #ca
+        """
+        editor.setCursorBufferPosition([0, 3])
+        completions = getCompletions()
+        expect(completions).toBe null
+
+    describe "pseudo selectors", ->
+      it "autocompletes without a prefix", ->
+        editor.setText """
+          div:
+        """
+        editor.setCursorBufferPosition([0, 4])
+        completions = getCompletions()
+        expect(completions.length).toBe 43
+        for completion in completions
+          text = (completion.text or completion.snippet)
+          expect(text.length).toBeGreaterThan 0
+          expect(completion.type).toBe 'pseudo-selector'
diff --git a/packages/autocomplete-css/update.coffee b/packages/autocomplete-css/update.coffee
new file mode 100644
index 000000000..a2fd696e4
--- /dev/null
+++ b/packages/autocomplete-css/update.coffee
@@ -0,0 +1,41 @@
+# Run this to update the static list of completions stored in the completions.json
+# file at the root of this repository.
+
+path = require 'path'
+fs = require 'fs'
+request = require 'request'
+fetchPropertyDescriptions = require './fetch-property-docs'
+
+PropertiesURL = 'https://raw.githubusercontent.com/adobe/brackets/master/src/extensions/default/CSSCodeHints/CSSProperties.json'
+
+propertiesPromise = new Promise (resolve) ->
+  request {json: true, url: PropertiesURL}, (error, response, properties) ->
+    if error?
+      console.error(error.message)
+      resolve(null)
+    if response.statusCode isnt 200
+      console.error("Request for CSSProperties.json failed: #{response.statusCode}")
+      resolve(null)
+    resolve(properties)
+
+propertyDescriptionsPromise = fetchPropertyDescriptions()
+
+Promise.all([propertiesPromise, propertyDescriptionsPromise]).then (values) ->
+  properties = {}
+  propertiesRaw = values[0]
+  propertyDescriptions = values[1]
+  sortedPropertyNames = JSON.parse(fs.readFileSync(path.join(__dirname, 'sorted-property-names.json')))
+  for propertyName in sortedPropertyNames
+    continue unless metadata = propertiesRaw[propertyName]
+    metadata.description = propertyDescriptions[propertyName]
+    properties[propertyName] = metadata
+    console.warn "No description for property #{propertyName}" unless propertyDescriptions[propertyName]?
+
+  for propertyName of propertiesRaw
+    console.warn "Ignoring #{propertyName}; not in sorted-property-names.json" if sortedPropertyNames.indexOf(propertyName) < 0
+
+  tags = JSON.parse(fs.readFileSync(path.join(__dirname, 'html-tags.json')))
+  pseudoSelectors = JSON.parse(fs.readFileSync(path.join(__dirname, 'pseudo-selectors.json')))
+
+  completions = {tags, properties, pseudoSelectors}
+  fs.writeFileSync(path.join(__dirname, 'completions.json'), "#{JSON.stringify(completions, null, '  ')}\n")
diff --git a/packages/autocomplete-html/.gitignore b/packages/autocomplete-html/.gitignore
new file mode 100644
index 000000000..3c3629e64
--- /dev/null
+++ b/packages/autocomplete-html/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/packages/autocomplete-html/README.md b/packages/autocomplete-html/README.md
new file mode 100644
index 000000000..a0ec28f69
--- /dev/null
+++ b/packages/autocomplete-html/README.md
@@ -0,0 +1,10 @@
+# HTML Autocomplete package
+
+HTML tag and attribute autocompletions in Pulsar.
+
+Tag and attribute autocompletions are powered by the list of HTML tags [here](https://github.com/adobe/brackets/blob/master/src/extensions/default/HTMLCodeHints/HtmlTags.json) and HTML attributes [here](https://github.com/adobe/brackets/blob/master/src/extensions/default/HTMLCodeHints/HtmlAttributes.json).
+Descriptions are powered by [MDN](https://developer.mozilla.org).
+
+![html-completions](https://cloud.githubusercontent.com/assets/2766036/25668197/ffd24928-2ff3-11e7-85fc-b327ac2287e6.gif)
+
+You can update the prebuilt list of tags and attributes names and values by running the `update.js` file at the root of the repository and then checking-in the changed `completions.json` file.
diff --git a/packages/autocomplete-html/completions.json b/packages/autocomplete-html/completions.json
new file mode 100644
index 000000000..e576f825c
--- /dev/null
+++ b/packages/autocomplete-html/completions.json
@@ -0,0 +1,1919 @@
+{
+  "tags": {
+    "a": {
+      "attributes": [
+        "href",
+        "hreflang",
+        "media",
+        "rel",
+        "target",
+        "type"
+      ],
+      "description": "Creates a hyperlink to other web pages, files, locations within the same page, email addresses, or any other URL."
+    },
+    "abbr": {
+      "description": "Represents an abbreviation and optionally provides a full description for it."
+    },
+    "address": {
+      "description": "Indicates that the enclosed HTML provides contact information for a person or people, or for an organization."
+    },
+    "area": {
+      "attributes": [
+        "alt",
+        "coords",
+        "href",
+        "hreflang",
+        "media",
+        "rel",
+        "shape",
+        "target",
+        "type"
+      ],
+      "description": "Defines a hot-spot region on an image, and optionally associates it with a hypertext link."
+    },
+    "article": {
+      "description": "Represents a self-contained composition in a document, page, application, or site, which is intended to be independently distributable or reusable (e."
+    },
+    "aside": {
+      "description": "Represents a portion of a document whose content is only indirectly related to the document's main content."
+    },
+    "audio": {
+      "attributes": [
+        "autoplay",
+        "controls",
+        "loop",
+        "mediagroup",
+        "muted",
+        "preload",
+        "src"
+      ],
+      "description": "Used to embed sound content in documents."
+    },
+    "b": {
+      "description": "Represents a span of text stylistically different from normal text, without conveying any special importance or relevance, and that is typically rendered in boldface."
+    },
+    "base": {
+      "attributes": [
+        "href",
+        "target"
+      ],
+      "description": "Specifies the base URL to use for all relative URLs contained within a document."
+    },
+    "bdi": {
+      "description": "Isolates a span of text that might be formatted in a different direction from other text outside it."
+    },
+    "bdo": {
+      "description": "Used to override the current directionality of text."
+    },
+    "big": {
+      "description": "The big element is obsolete. Avoid using it and update existing code if possible."
+    },
+    "blockquote": {
+      "attributes": [
+        "cite"
+      ],
+      "description": "Indicates that the enclosed text is an extended quotation."
+    },
+    "body": {
+      "attributes": [
+        "onafterprint",
+        "onbeforeprint",
+        "onbeforeunload",
+        "onhashchange",
+        "onmessage",
+        "onoffline",
+        "ononline",
+        "onpagehide",
+        "onpageshow",
+        "onpopstate",
+        "onredo",
+        "onresize",
+        "onstorage",
+        "onundo",
+        "onunload"
+      ],
+      "description": "Represents the content of an HTML document."
+    },
+    "br": {
+      "description": "Produces a line break in text (carriage-return)."
+    },
+    "button": {
+      "attributes": [
+        "autofocus",
+        "disabled",
+        "form",
+        "formaction",
+        "formenctype",
+        "formmethod",
+        "formnovalidate",
+        "formtarget",
+        "name",
+        "type",
+        "value"
+      ],
+      "description": "Represents a clickable button, which can be used in forms, or anywhere in a document that needs simple, standard button functionality."
+    },
+    "canvas": {
+      "attributes": [
+        "height",
+        "width"
+      ],
+      "description": "Use the HTML canvas element with either the canvas scripting API or the WebGL API to draw graphics and animations."
+    },
+    "caption": {
+      "description": "Represents the title of a table."
+    },
+    "cite": {
+      "description": "Represents a reference to a creative work."
+    },
+    "code": {
+      "description": "Displays its contents styled in a fashion intended to indicate that the text is a short fragment of computer code."
+    },
+    "col": {
+      "attributes": [
+        "span"
+      ],
+      "description": "Defines a column within a table and is used for defining common semantics on all common cells."
+    },
+    "colgroup": {
+      "attributes": [
+        "span"
+      ],
+      "description": "Defines a group of columns within a table."
+    },
+    "command": {
+      "attributes": [
+        "checked",
+        "disabled",
+        "icon",
+        "label",
+        "radiogroup",
+        "type"
+      ],
+      "description": "The command element is obsolete. Avoid using it and update existing code if possible."
+    },
+    "datalist": {
+      "description": "Contains a set of option elements that represent the values available for other controls."
+    },
+    "dd": {
+      "description": "Provides the details about or the definition of the preceding term (dt) in a description list (dl)."
+    },
+    "del": {
+      "attributes": [
+        "cite",
+        "datetime"
+      ],
+      "description": "Represents a range of text that has been deleted from a document."
+    },
+    "details": {
+      "attributes": [
+        "open"
+      ],
+      "description": "Used as a disclosure widget from which the user can retrieve additional information."
+    },
+    "dfn": {
+      "description": "Represents the defining instance of a term."
+    },
+    "dialog": {
+      "attributes": [
+        "open"
+      ],
+      "description": "Represents a dialog box or other interactive component, such as an inspector or window."
+    },
+    "div": {
+      "description": "The generic container for flow content and does not inherently represent anything."
+    },
+    "dl": {
+      "description": "Represents a description list."
+    },
+    "dt": {
+      "description": "Specifies a term in a description or definition list, and as such must be used inside a dl element."
+    },
+    "em": {
+      "description": "Marks text that has stress emphasis."
+    },
+    "embed": {
+      "attributes": [
+        "height",
+        "src",
+        "type",
+        "width"
+      ],
+      "description": "Embeds external content at the specified point in the document."
+    },
+    "fieldset": {
+      "attributes": [
+        "disabled",
+        "form",
+        "name"
+      ],
+      "description": "Used to group several controls as well as labels (label) within a web form."
+    },
+    "figcaption": {
+      "description": "Represents a caption or a legend associated with a figure or an illustration described by the rest of the data of the figure element which is its immediate ancestor."
+    },
+    "figure": {
+      "description": "Represents self-contained content, frequently with a caption (figcaption), and is typically referenced as a single unit."
+    },
+    "footer": {
+      "description": "Represents a footer for its nearest sectioning content or sectioning root element."
+    },
+    "form": {
+      "attributes": [
+        "accept-charset",
+        "action",
+        "autocomplete",
+        "enctype",
+        "method",
+        "name",
+        "novalidate",
+        "target"
+      ],
+      "description": "Represents a document section that contains interactive controls to submit information to a web server."
+    },
+    "h1": {
+      "description": "The HTML h1 – h6 elements represent six levels of section headings."
+    },
+    "h2": {
+      "description": "The HTML h1 – h6 elements represent six levels of section headings."
+    },
+    "h3": {
+      "description": "The HTML h1 – h6 elements represent six levels of section headings."
+    },
+    "h4": {
+      "description": "The HTML h1 – h6 elements represent six levels of section headings."
+    },
+    "h5": {
+      "description": "The HTML h1 – h6 elements represent six levels of section headings."
+    },
+    "h6": {
+      "description": "The HTML h1 – h6 elements represent six levels of section headings."
+    },
+    "head": {
+      "description": "Provides general information (metadata) about the document, including its title and links to its scripts and style sheets."
+    },
+    "header": {
+      "description": "Represents introductory content, typically a group of introductory or navigational aids."
+    },
+    "hgroup": {
+      "description": "Represents a multi-level heading for a section of a document."
+    },
+    "hr": {
+      "description": "Represents a thematic break between paragraph-level elements (for example, a change of scene in a story, or a shift of topic with a section); historically, this has been presented as a horizontal rule or line."
+    },
+    "html": {
+      "attributes": [
+        "manifest",
+        "xml:lang",
+        "xmlns"
+      ],
+      "description": "Represents the root (top-level element) of an HTML document, so it is also referred to as the root element."
+    },
+    "i": {
+      "description": "Represents a range of text that is set off from the normal text for some reason, for example, technical terms, foreign language phrases, or fictional character thoughts."
+    },
+    "iframe": {
+      "attributes": [
+        "height",
+        "name",
+        "sandbox",
+        "seamless",
+        "src",
+        "srcdoc",
+        "width"
+      ],
+      "description": "Represents a nested browsing context, effectively embedding another HTML page into the current page."
+    },
+    "ilayer": {},
+    "img": {
+      "attributes": [
+        "alt",
+        "height",
+        "ismap",
+        "longdesc",
+        "src",
+        "usemap",
+        "width"
+      ],
+      "description": "Embeds an image into the document."
+    },
+    "input": {
+      "attributes": [
+        "accept",
+        "alt",
+        "autocomplete",
+        "autofocus",
+        "checked",
+        "dirname",
+        "disabled",
+        "form",
+        "formaction",
+        "formenctype",
+        "formmethod",
+        "formnovalidate",
+        "formtarget",
+        "height",
+        "list",
+        "max",
+        "maxlength",
+        "min",
+        "multiple",
+        "name",
+        "pattern",
+        "placeholder",
+        "readonly",
+        "required",
+        "size",
+        "src",
+        "step",
+        "type",
+        "value",
+        "width"
+      ],
+      "description": "Used to create interactive controls for web-based forms in order to accept data from the user."
+    },
+    "ins": {
+      "attributes": [
+        "cite",
+        "datetime"
+      ],
+      "description": "Represents a range of text that has been added to a document."
+    },
+    "kbd": {
+      "description": "Represents user input and produces an inline element displayed in the browser's default monospace font."
+    },
+    "keygen": {
+      "attributes": [
+        "autofocus",
+        "challenge",
+        "disabled",
+        "form",
+        "keytype",
+        "name"
+      ],
+      "description": "The keygen element is deprecated. Avoid using it and update existing code if possible."
+    },
+    "label": {
+      "attributes": [
+        "for",
+        "form"
+      ],
+      "description": "Represents a caption for an item in a user interface."
+    },
+    "legend": {
+      "description": "Represents a caption for the content of its parent fieldset."
+    },
+    "li": {
+      "attributes": [
+        "value"
+      ],
+      "description": "Used to represent an item in a list."
+    },
+    "link": {
+      "attributes": [
+        "disabled",
+        "href",
+        "hreflang",
+        "media",
+        "rel",
+        "sizes",
+        "type"
+      ],
+      "description": "Specifies relationships between the current document and an external resource."
+    },
+    "main": {
+      "description": "Represents the main content of the body of a document, portion of a document, or application."
+    },
+    "map": {
+      "attributes": [
+        "name"
+      ],
+      "description": "Used with area elements to define an image map (a clickable link area)."
+    },
+    "mark": {
+      "description": "Represents highlighted text, i."
+    },
+    "marquee": {
+      "attributes": [
+        "align",
+        "behavior",
+        "bgcolor",
+        "direction",
+        "height",
+        "hspace",
+        "loop",
+        "scrollamount",
+        "scrolldelay",
+        "truespeed",
+        "vspace",
+        "width"
+      ],
+      "description": "The marquee element is obsolete. Avoid using it and update existing code if possible."
+    },
+    "menu": {
+      "attributes": [
+        "label",
+        "type"
+      ],
+      "description": "Represents a group of commands that a user can perform or activate."
+    },
+    "meta": {
+      "attributes": [
+        "charset",
+        "content",
+        "http-equiv",
+        "name"
+      ],
+      "description": "Represents metadata that cannot be represented by other HTML meta-related elements, like base, link, script, style or title."
+    },
+    "meter": {
+      "attributes": [
+        "form",
+        "high",
+        "low",
+        "max",
+        "min",
+        "optimum",
+        "value"
+      ],
+      "description": "Represents either a scalar value within a known range or a fractional value."
+    },
+    "nav": {
+      "description": "Represents a section of a page whose purpose is to provide navigation links, either within the current document or to other documents."
+    },
+    "noscript": {
+      "description": "Defines a section of HTML to be inserted if a script type on the page is unsupported or if scripting is currently turned off in the browser."
+    },
+    "object": {
+      "attributes": [
+        "archive",
+        "codebase",
+        "codetype",
+        "data",
+        "declare",
+        "form",
+        "height",
+        "name",
+        "standby",
+        "type",
+        "usemap",
+        "width"
+      ],
+      "description": "Represents an external resource, which can be treated as an image, a nested browsing context, or a resource to be handled by a plugin."
+    },
+    "ol": {
+      "attributes": [
+        "reversed",
+        "start",
+        "type"
+      ],
+      "description": "Represents an ordered list of items, typically rendered as a numbered list."
+    },
+    "optgroup": {
+      "attributes": [
+        "disabled",
+        "label"
+      ],
+      "description": "Creates a grouping of options within a select element."
+    },
+    "option": {
+      "attributes": [
+        "disabled",
+        "label",
+        "selected",
+        "value"
+      ],
+      "description": "Used to define an item contained in a select, an optgroup, or a datalist element."
+    },
+    "output": {
+      "attributes": [
+        "for",
+        "form",
+        "name"
+      ],
+      "description": "Represents the result of a calculation or user action."
+    },
+    "p": {
+      "description": "Represents a paragraph of text."
+    },
+    "param": {
+      "attributes": [
+        "name",
+        "value"
+      ],
+      "description": "Defines parameters for an object element."
+    },
+    "pre": {
+      "description": "Represents preformatted text which is to be presented exactly as written in the HTML file."
+    },
+    "progress": {
+      "attributes": [
+        "form",
+        "max",
+        "value"
+      ],
+      "description": "Displays an indicator showing the completion progress of a task, typically displayed as a progress bar."
+    },
+    "q": {
+      "attributes": [
+        "cite"
+      ],
+      "description": "Indicates that the enclosed text is a short inline quotation."
+    },
+    "rp": {
+      "description": "The HTML Ruby Fallback Parenthesis (rp) element is used to provide fall-back parentheses for browsers that do not support display of ruby annotations using the ruby element."
+    },
+    "rt": {
+      "description": "The HTML Ruby Text (rt) element specifies the ruby text component of a ruby annotation, which is used to provide pronunciation, translation, or transliteration information for East Asian typography."
+    },
+    "ruby": {
+      "description": "Represents a ruby annotation."
+    },
+    "samp": {
+      "description": "An element intended to identify sample output from a computer program."
+    },
+    "script": {
+      "attributes": [
+        "async",
+        "charset",
+        "defer",
+        "src",
+        "type"
+      ],
+      "description": "Used to embed or reference executable code; this is typically used to embed or refer to JavaScript code."
+    },
+    "section": {
+      "description": "Represents a standalone section — which doesn't have a more specific semantic element to represent it — contained within an HTML document."
+    },
+    "select": {
+      "attributes": [
+        "autofocus",
+        "disabled",
+        "form",
+        "multiple",
+        "name",
+        "required",
+        "size"
+      ],
+      "description": "Represents a control that provides a menu of options:"
+    },
+    "small": {
+      "description": "Makes the text font size one size smaller (for example, from large to medium, or from small to x-small) down to the browser's minimum font size."
+    },
+    "source": {
+      "attributes": [
+        "media",
+        "src",
+        "type"
+      ],
+      "description": "Specifies multiple media resources for the picture, the audio element, or the video element."
+    },
+    "span": {
+      "description": "A generic inline container for phrasing content, which does not inherently represent anything."
+    },
+    "strong": {
+      "description": "Gives text strong importance and is typically displayed in bold."
+    },
+    "style": {
+      "attributes": [
+        "disabled",
+        "media",
+        "scoped",
+        "type"
+      ],
+      "description": "Contains style information for a document, or part of a document."
+    },
+    "sub": {
+      "description": "Defines a span of text that should be displayed, for typographic reasons, lower, and often smaller, than the main span of text."
+    },
+    "summary": {
+      "description": "Used as a summary, caption, or legend for the content of a details element."
+    },
+    "sup": {
+      "description": "Defines a span of text that should be displayed, for typographic reasons, higher, and often smaller, than the main span of text."
+    },
+    "table": {
+      "attributes": [
+        "border"
+      ],
+      "description": "Represents tabular data — that is, information presented in a two-dimensional table comprised of rows and columns of cells containing data."
+    },
+    "tbody": {
+      "description": "Groups one or more tr elements as the body of a table element."
+    },
+    "td": {
+      "attributes": [
+        "colspan",
+        "headers",
+        "rowspan"
+      ],
+      "description": "Defines a cell of a table that contains data."
+    },
+    "template": {
+      "attributes": [
+        "content"
+      ],
+      "description": "A mechanism for holding client-side content that is not to be rendered when a page is loaded but may subsequently be instantiated during runtime using JavaScript."
+    },
+    "textarea": {
+      "attributes": [
+        "autofocus",
+        "cols",
+        "dirname",
+        "disabled",
+        "form",
+        "label",
+        "maxlength",
+        "name",
+        "placeholder",
+        "readonly",
+        "required",
+        "rows",
+        "wrap"
+      ],
+      "description": "Represents a multi-line plain-text editing control."
+    },
+    "tfoot": {
+      "description": "Defines a set of rows summarizing the columns of the table."
+    },
+    "th": {
+      "attributes": [
+        "colspan",
+        "headers",
+        "rowspan",
+        "scope"
+      ],
+      "description": "Defines a cell as header of a group of table cells."
+    },
+    "thead": {
+      "description": "Defines a set of rows defining the head of the columns of the table."
+    },
+    "time": {
+      "attributes": [
+        "datetime",
+        "pubdate"
+      ],
+      "description": "Represents either a time on a 24-hour clock or a precise date in the Gregorian calendar (with optional time and timezone information)."
+    },
+    "title": {
+      "description": "Defines the title of the document, shown in a browser's title bar or on the page's tab."
+    },
+    "tr": {
+      "description": "Specifies that the markup contained inside the tr block comprises one row of a table, inside which the th and td elements create header and data cells, respectively, within the row."
+    },
+    "track": {
+      "attributes": [
+        "default",
+        "kind",
+        "label",
+        "src",
+        "srclang"
+      ],
+      "description": "Used as a child of the media elements audio and video."
+    },
+    "tt": {
+      "description": "The tt element is obsolete. Avoid using it and update existing code if possible."
+    },
+    "ul": {
+      "description": "Represents an unordered list of items, typically rendered as a bulleted list."
+    },
+    "var": {
+      "description": "Represents a variable in a mathematical expression or a programming context."
+    },
+    "video": {
+      "attributes": [
+        "autoplay",
+        "controls",
+        "height",
+        "loop",
+        "mediagroup",
+        "muted",
+        "poster",
+        "preload",
+        "src",
+        "width"
+      ],
+      "description": "Use the HTML video element to embed video content in a document."
+    },
+    "wbr": {
+      "description": "Represents a word break opportunity—a position within text where the browser may optionally break a line, though its line-breaking rules would not otherwise create a break at that location."
+    }
+  },
+  "attributes": {
+    "accesskey": {
+      "global": "true",
+      "description": "Provides a hint for generating a keyboard shortcut for the current element."
+    },
+    "class": {
+      "global": "true",
+      "type": "cssStyle",
+      "description": "A space-separated list of the classes of the element."
+    },
+    "contenteditable": {
+      "global": "true",
+      "type": "boolean",
+      "description": "An enumerated attribute indicating if the element should be editable by the user."
+    },
+    "contextmenu": {
+      "global": "true",
+      "description": "The id of a menu to use as the contextual menu for this element."
+    },
+    "dir": {
+      "attribOption": [
+        "ltr",
+        "rtl"
+      ],
+      "global": "true",
+      "description": "An enumerated attribute indicates the directionality of the element's text."
+    },
+    "draggable": {
+      "attribOption": [
+        "auto",
+        "false",
+        "true"
+      ],
+      "global": "true",
+      "description": "An enumerated attribute that indicates whether the element can be dragged, using the HTML Drag and Drop API."
+    },
+    "dropzone": {
+      "attribOption": [
+        "copy",
+        "move",
+        "link"
+      ],
+      "global": "true",
+      "description": "An enumerated attribute indicating what types of content can be dropped on an element, using the Drag and Drop API."
+    },
+    "hidden": {
+      "type": "flag",
+      "global": "true",
+      "description": "A Boolean attribute indicating that the element is not yet, or is no longer, relevant."
+    },
+    "id": {
+      "global": "true",
+      "type": "cssId",
+      "description": "Defines a unique identifier (ID) which must be unique in the whole document."
+    },
+    "lang": {
+      "attribOption": [
+        "ab",
+        "aa",
+        "af",
+        "sq",
+        "am",
+        "ar",
+        "an",
+        "hy",
+        "as",
+        "ay",
+        "az",
+        "ba",
+        "eu",
+        "bn",
+        "dz",
+        "bh",
+        "bi",
+        "br",
+        "bg",
+        "my",
+        "be",
+        "km",
+        "ca",
+        "zh",
+        "co",
+        "hr",
+        "cs",
+        "da",
+        "nl",
+        "en",
+        "eo",
+        "et",
+        "fo",
+        "fa",
+        "fi",
+        "fr",
+        "fy",
+        "gl",
+        "gd",
+        "gv",
+        "ka",
+        "de",
+        "el",
+        "kl",
+        "gn",
+        "gu",
+        "ht",
+        "ha",
+        "he",
+        "hi",
+        "hu",
+        "is",
+        "io",
+        "id",
+        "ia",
+        "ie",
+        "iu",
+        "ik",
+        "ga",
+        "it",
+        "ja",
+        "jv",
+        "kn",
+        "ks",
+        "kk",
+        "rw",
+        "ky",
+        "rn",
+        "ko",
+        "ku",
+        "lo",
+        "la",
+        "lv",
+        "li",
+        "ln",
+        "lt",
+        "mk",
+        "mg",
+        "ms",
+        "ml",
+        "mt",
+        "mi",
+        "mr",
+        "mo",
+        "mn",
+        "na",
+        "ne",
+        "no",
+        "oc",
+        "or",
+        "om",
+        "ps",
+        "pl",
+        "pt",
+        "pa",
+        "qu",
+        "rm",
+        "ro",
+        "ru",
+        "sz",
+        "sm",
+        "sg",
+        "sa",
+        "sr",
+        "sh",
+        "st",
+        "tn",
+        "sn",
+        "ii",
+        "sd",
+        "si",
+        "ss",
+        "sk",
+        "sl",
+        "so",
+        "es",
+        "su",
+        "sw",
+        "sv",
+        "tl",
+        "tg",
+        "ta",
+        "tt",
+        "te",
+        "th",
+        "bo",
+        "ti",
+        "to",
+        "ts",
+        "tr",
+        "tk",
+        "tw",
+        "ug",
+        "uk",
+        "ur",
+        "uz",
+        "vi",
+        "vo",
+        "wa",
+        "cy",
+        "wo",
+        "xh",
+        "yi",
+        "yo",
+        "zu"
+      ],
+      "global": "true",
+      "description": "Participates in defining the language of the element, the language that its non-editable elements are written in or the language that the editable elements should be written in."
+    },
+    "role": {
+      "attribOption": [
+        "alert",
+        "alertdialog",
+        "article",
+        "application",
+        "banner",
+        "button",
+        "checkbox",
+        "columnheader",
+        "combobox",
+        "complementary",
+        "contentinfo",
+        "definition",
+        "directory",
+        "dialog",
+        "document",
+        "form",
+        "grid",
+        "gridcell",
+        "group",
+        "heading",
+        "img",
+        "link",
+        "list",
+        "listbox",
+        "listitem",
+        "log",
+        "main",
+        "marquee",
+        "math",
+        "menu",
+        "menubar",
+        "menuitem",
+        "menuitemcheckbox",
+        "menuitemradio",
+        "navigation",
+        "note",
+        "option",
+        "presentation",
+        "progressbar",
+        "radio",
+        "radiogroup",
+        "region",
+        "row",
+        "rowgroup",
+        "rowheader",
+        "scrollbar",
+        "search",
+        "separator",
+        "slider",
+        "spinbutton",
+        "status",
+        "tab",
+        "tablist",
+        "tabpanel",
+        "textbox",
+        "timer",
+        "toolbar",
+        "tooltip",
+        "tree",
+        "treegrid",
+        "treeitem"
+      ],
+      "global": "true"
+    },
+    "spellcheck": {
+      "global": "true",
+      "type": "boolean",
+      "description": "An enumerated attribute defines whether the element may be checked for spelling errors."
+    },
+    "style": {
+      "global": "true",
+      "type": "style",
+      "description": "Contains CSS styling declarations to be applied to the element."
+    },
+    "tabindex": {
+      "global": "true",
+      "description": "Indicates if its element can be focused, and if/where it participates in sequential keyboard navigation (usually with the Tab key, hence the name)."
+    },
+    "title": {
+      "global": "true",
+      "description": "Contains text representing advisory information, related to the element it belongs to."
+    },
+    "onabort": {
+      "global": "true"
+    },
+    "onblur": {
+      "global": "true"
+    },
+    "oncanplay": {
+      "global": "true"
+    },
+    "oncanplaythrough": {
+      "global": "true"
+    },
+    "onchange": {
+      "global": "true"
+    },
+    "onclick": {
+      "global": "true"
+    },
+    "oncontextmenu": {
+      "global": "true"
+    },
+    "oncuechange": {
+      "global": "true"
+    },
+    "ondblclick": {
+      "global": "true"
+    },
+    "ondrag": {
+      "global": "true"
+    },
+    "ondragend": {
+      "global": "true"
+    },
+    "ondragenter": {
+      "global": "true"
+    },
+    "ondragleave": {
+      "global": "true"
+    },
+    "ondragover": {
+      "global": "true"
+    },
+    "ondragstart": {
+      "global": "true"
+    },
+    "ondrop": {
+      "global": "true"
+    },
+    "ondurationchange": {
+      "global": "true"
+    },
+    "onemptied": {
+      "global": "true"
+    },
+    "onended": {
+      "global": "true"
+    },
+    "onerror": {
+      "global": "true"
+    },
+    "onfocus": {
+      "global": "true"
+    },
+    "oninput": {
+      "global": "true"
+    },
+    "oninvalid": {
+      "global": "true"
+    },
+    "onkeydown": {
+      "global": "true"
+    },
+    "onkeypress": {
+      "global": "true"
+    },
+    "onkeyup": {
+      "global": "true"
+    },
+    "onload": {
+      "global": "true"
+    },
+    "onloadeddata": {
+      "global": "true"
+    },
+    "onloadedmetadata": {
+      "global": "true"
+    },
+    "onloadstart": {
+      "global": "true"
+    },
+    "onmousedown": {
+      "global": "true"
+    },
+    "onmousemove": {
+      "global": "true"
+    },
+    "onmouseout": {
+      "global": "true"
+    },
+    "onmouseover": {
+      "global": "true"
+    },
+    "onmouseup": {
+      "global": "true"
+    },
+    "onmousewheel": {
+      "global": "true"
+    },
+    "onpause": {
+      "global": "true"
+    },
+    "onplay": {
+      "global": "true"
+    },
+    "onplaying": {
+      "global": "true"
+    },
+    "onprogress": {
+      "global": "true"
+    },
+    "onratechange": {
+      "global": "true"
+    },
+    "onreadystatechange": {
+      "global": "true"
+    },
+    "onreset": {
+      "global": "true"
+    },
+    "onscroll": {
+      "global": "true"
+    },
+    "onseeked": {
+      "global": "true"
+    },
+    "onseeking": {
+      "global": "true"
+    },
+    "onselect": {
+      "global": "true"
+    },
+    "onshow": {
+      "global": "true"
+    },
+    "onstalled": {
+      "global": "true"
+    },
+    "onsubmit": {
+      "global": "true"
+    },
+    "onsuspend": {
+      "global": "true"
+    },
+    "ontimeupdate": {
+      "global": "true"
+    },
+    "onvolumechange": {
+      "global": "true"
+    },
+    "onwaiting": {
+      "global": "true"
+    },
+    "aria-autocomplete": {
+      "attribOption": [
+        "inline",
+        "list",
+        "both",
+        "none"
+      ]
+    },
+    "aria-activedescendant": {
+      "global": "true"
+    },
+    "aria-atomic": {
+      "attribOption": [
+        "true",
+        "false"
+      ],
+      "global": "true",
+      "type": "boolean"
+    },
+    "aria-busy": {
+      "global": "true",
+      "type": "boolean"
+    },
+    "aria-checked": {
+      "attribOption": [
+        "true",
+        "false",
+        "mixed",
+        "undefined"
+      ]
+    },
+    "aria-controls": {
+      "global": "true"
+    },
+    "aria-describedby": {
+      "global": "true"
+    },
+    "aria-disabled": {
+      "attribOption": [
+        "true",
+        "false"
+      ],
+      "global": "true"
+    },
+    "aria-dropeffect": {
+      "attribOption": [
+        "copy",
+        "move",
+        "link",
+        "execute",
+        "popup",
+        "none"
+      ],
+      "global": "true"
+    },
+    "aria-expanded": {
+      "attribOption": [
+        "true",
+        "false",
+        "undefined"
+      ]
+    },
+    "aria-flowto": {
+      "global": "true"
+    },
+    "aria-grabbed": {
+      "attribOption": [
+        "true",
+        "false",
+        "undefined"
+      ],
+      "global": "true"
+    },
+    "aria-haspopup": {
+      "attribOption": [
+        "true",
+        "false"
+      ],
+      "global": "true",
+      "type": "boolean"
+    },
+    "aria-hidden": {
+      "attribOption": [
+        "true",
+        "false"
+      ],
+      "global": "true",
+      "type": "boolean"
+    },
+    "aria-invalid": {
+      "attribOption": [
+        "grammar",
+        "false",
+        "spelling",
+        "true"
+      ],
+      "global": "true"
+    },
+    "aria-label": {
+      "global": "true"
+    },
+    "aria-labelledby": {
+      "global": "true"
+    },
+    "aria-level": {},
+    "aria-live": {
+      "attribOption": [
+        "off",
+        "polite",
+        "assertive"
+      ],
+      "global": "true"
+    },
+    "aria-multiline": {
+      "attribOption": [
+        "true",
+        "false"
+      ],
+      "type": "boolean"
+    },
+    "aria-multiselectable": {
+      "attribOption": [
+        "true",
+        "false"
+      ],
+      "type": "boolean"
+    },
+    "aria-orientation": {
+      "attribOption": [
+        "vertical",
+        "horizontal"
+      ]
+    },
+    "aria-owns": {
+      "global": "true"
+    },
+    "aria-posinset": {},
+    "aria-pressed": {
+      "attribOption": [
+        "true",
+        "false",
+        "mixed",
+        "undefined"
+      ]
+    },
+    "aria-readonly": {
+      "attribOption": [
+        "true",
+        "false"
+      ]
+    },
+    "aria-relevant": {
+      "attribOption": [
+        "additions",
+        "removals",
+        "text",
+        "all",
+        "additions text"
+      ],
+      "global": "true"
+    },
+    "aria-required": {
+      "attribOption": [
+        "true",
+        "false"
+      ],
+      "type": "boolean"
+    },
+    "aria-selected": {
+      "attribOption": [
+        "true",
+        "false",
+        "undefined"
+      ]
+    },
+    "aria-setsize": {},
+    "aria-sort": {
+      "attribOption": [
+        "ascending",
+        "descending",
+        "none",
+        "other"
+      ]
+    },
+    "aria-valuemax": {},
+    "aria-valuemin": {},
+    "aria-valuenow": {},
+    "aria-valuetext": {},
+    "accept": {
+      "attribOption": [
+        "text/html",
+        "text/plain",
+        "application/msword",
+        "application/msexcel",
+        "application/postscript",
+        "application/x-zip-compressed",
+        "application/pdf",
+        "application/rtf",
+        "video/x-msvideo",
+        "video/quicktime",
+        "video/x-mpeg2",
+        "audio/x-pn/realaudio",
+        "audio/x-mpeg",
+        "audio/x-waw",
+        "audio/x-aiff",
+        "audio/basic",
+        "image/tiff",
+        "image/jpeg",
+        "image/gif",
+        "image/x-png",
+        "image/x-photo-cd",
+        "image/x-MS-bmp",
+        "image/x-rgb",
+        "image/x-portable-pixmap",
+        "image/x-portable-greymap",
+        "image/x-portablebitmap"
+      ]
+    },
+    "accept-charset": {},
+    "action": {},
+    "align": {},
+    "alt": {},
+    "archive": {},
+    "async": {
+      "type": "flag"
+    },
+    "autocomplete": {
+      "attribOption": [
+        "additional-name",
+        "address-level1",
+        "address-level2",
+        "address-level3",
+        "address-level4",
+        "address-line1",
+        "address-line2",
+        "address-line3",
+        "bday",
+        "bday-year",
+        "bday-day",
+        "bday-month",
+        "billing",
+        "cc-additional-name",
+        "cc-csc",
+        "cc-exp",
+        "cc-exp-month",
+        "cc-exp-year",
+        "cc-family-name",
+        "cc-given-name",
+        "cc-name",
+        "cc-number",
+        "cc-type",
+        "country",
+        "country-name",
+        "current-password",
+        "email",
+        "family-name",
+        "fax",
+        "given-name",
+        "home",
+        "honorific-prefix",
+        "honorific-suffix",
+        "impp",
+        "language",
+        "mobile",
+        "name",
+        "new-password",
+        "nickname",
+        "off",
+        "on",
+        "organization",
+        "organization-title",
+        "pager",
+        "photo",
+        "postal-code",
+        "sex",
+        "shipping",
+        "street-address",
+        "tel-area-code",
+        "tel",
+        "tel-country-code",
+        "tel-extension",
+        "tel-local",
+        "tel-local-prefix",
+        "tel-local-suffix",
+        "tel-national",
+        "transaction-amount",
+        "transaction-currency",
+        "url",
+        "username",
+        "work"
+      ]
+    },
+    "autofocus": {
+      "type": "flag"
+    },
+    "autoplay": {
+      "type": "flag"
+    },
+    "behavior": {
+      "attribOption": [
+        "scroll",
+        "slide",
+        "alternate"
+      ]
+    },
+    "bgcolor": {
+      "type": "color"
+    },
+    "border": {},
+    "challenge": {},
+    "charset": {
+      "attribOption": [
+        "iso-8859-1",
+        "utf-8",
+        "shift_jis",
+        "euc-jp",
+        "big5",
+        "gb2312",
+        "euc-kr",
+        "din_66003-kr",
+        "ns_4551-1-kr",
+        "sen_850200_b",
+        "csISO2022jp",
+        "hz-gb-2312",
+        "ibm852",
+        "ibm866",
+        "irv",
+        "iso-2022-kr",
+        "iso-8859-2",
+        "iso-8859-3",
+        "iso-8859-4",
+        "iso-8859-5",
+        "iso-8859-6",
+        "iso-8859-7",
+        "iso-8859-8",
+        "iso-8859-9",
+        "koi8-r",
+        "ks_c_5601",
+        "windows-1250",
+        "windows-1251",
+        "windows-1252",
+        "windows-1253",
+        "windows-1254",
+        "windows-1255",
+        "windows-1256",
+        "windows-1257",
+        "windows-1258",
+        "windows-874",
+        "x-euc",
+        "asmo-708",
+        "dos-720",
+        "dos-862",
+        "dos-874",
+        "cp866",
+        "cp1256"
+      ]
+    },
+    "checked": {
+      "type": "flag"
+    },
+    "cite": {},
+    "codebase": {},
+    "codetype": {},
+    "cols": {},
+    "colspan": {},
+    "content": {},
+    "controls": {
+      "type": "flag"
+    },
+    "coords": {},
+    "data": {},
+    "datetime": {},
+    "declare": {
+      "type": "flag"
+    },
+    "default": {
+      "type": "flag"
+    },
+    "defer": {
+      "type": "flag"
+    },
+    "direction": {
+      "attribOption": [
+        "left",
+        "right",
+        "up",
+        "down"
+      ]
+    },
+    "dirname": {},
+    "disabled": {
+      "type": "flag"
+    },
+    "enctype": {
+      "attribOption": [
+        "application/x-www-form-urlencoded",
+        "multipart/form-data",
+        "text/plain"
+      ]
+    },
+    "for": {},
+    "form": {},
+    "formaction": {},
+    "formenctype": {
+      "attribOption": [
+        "application/x-www-form-urlencoded",
+        "multipart/form-data",
+        "text/plain"
+      ]
+    },
+    "formmethod": {
+      "attribOption": [
+        "get",
+        "post"
+      ]
+    },
+    "formnovalidate": {
+      "type": "flag"
+    },
+    "formtarget": {
+      "attribOption": [
+        "_blank",
+        "_parent",
+        "_self",
+        "_top"
+      ]
+    },
+    "headers": {},
+    "height": {},
+    "high": {},
+    "href": {},
+    "hreflang": {},
+    "hspace": {},
+    "http-equiv": {
+      "attribOption": [
+        "content-type",
+        "default-style",
+        "refresh"
+      ]
+    },
+    "icon": {},
+    "ismap": {
+      "type": "flag"
+    },
+    "keytype": {
+      "attribOption": [
+        "dsa",
+        "ec",
+        "rsa"
+      ]
+    },
+    "kind": {
+      "attribOption": [
+        "captions",
+        "chapters",
+        "descriptions",
+        "metadata",
+        "subtitles"
+      ]
+    },
+    "label": {},
+    "list": {},
+    "longdesc": {},
+    "loop": {
+      "type": "flag"
+    },
+    "low": {},
+    "manifest": {},
+    "max": {},
+    "maxlength": {},
+    "media": {
+      "attribOption": [
+        "screen",
+        "tty",
+        "tv",
+        "projection",
+        "handheld",
+        "print",
+        "aural",
+        "braille",
+        "embossed",
+        "speech",
+        "all",
+        "width",
+        "min-width",
+        "max-width",
+        "height",
+        "min-height",
+        "max-height",
+        "device-width",
+        "min-device-width",
+        "max-device-width",
+        "device-height",
+        "min-device-height",
+        "max-device-height",
+        "orientation",
+        "aspect-ratio",
+        "min-aspect-ratio",
+        "max-aspect-ratio",
+        "device-aspect-ratio",
+        "min-device-aspect-ratio",
+        "max-device-aspect-ratio",
+        "color",
+        "min-color",
+        "max-color",
+        "color-index",
+        "min-color-index",
+        "max-color-index",
+        "monochrome",
+        "min-monochrome",
+        "max-monochrome",
+        "resolution",
+        "min-resolution",
+        "max-resolution",
+        "scan",
+        "grid"
+      ],
+      "allowMultipleValues": "true"
+    },
+    "mediagroup": {},
+    "method": {
+      "attribOption": [
+        "get",
+        "post"
+      ]
+    },
+    "min": {},
+    "multiple": {
+      "type": "flag"
+    },
+    "muted": {
+      "type": "flag"
+    },
+    "name": {},
+    "meta/name": {
+      "attribOption": [
+        "application-name",
+        "author",
+        "description",
+        "generator",
+        "keywords"
+      ]
+    },
+    "novalidate": {
+      "type": "flag"
+    },
+    "open": {
+      "type": "flag"
+    },
+    "optimum": {},
+    "pattern": {},
+    "placeholder": {},
+    "poster": {},
+    "preload": {
+      "attribOption": [
+        "auto",
+        "metadata",
+        "none"
+      ]
+    },
+    "pubdate": {},
+    "radiogroup": {},
+    "rel": {
+      "attribOption": [
+        "alternate",
+        "author",
+        "bookmark",
+        "help",
+        "license",
+        "next",
+        "nofollow",
+        "noreferrer",
+        "prefetch",
+        "prev",
+        "search",
+        "sidebar",
+        "tag",
+        "external"
+      ]
+    },
+    "link/rel": {
+      "attribOption": [
+        "alternate",
+        "author",
+        "help",
+        "icon",
+        "license",
+        "next",
+        "pingback",
+        "prefetch",
+        "prev",
+        "search",
+        "sidebar",
+        "stylesheet",
+        "tag"
+      ]
+    },
+    "readonly": {
+      "type": "flag"
+    },
+    "required": {
+      "type": "flag"
+    },
+    "reversed": {
+      "type": "flag"
+    },
+    "rows": {},
+    "rowspan": {},
+    "sandbox": {
+      "attribOption": [
+        "allow-forms",
+        "allow-same-origin",
+        "allow-scripts",
+        "allow-top-navigation"
+      ]
+    },
+    "seamless": {
+      "type": "flag"
+    },
+    "selected": {
+      "type": "flag"
+    },
+    "scope": {
+      "attribOption": [
+        "col",
+        "colgroup",
+        "row",
+        "rowgroup"
+      ]
+    },
+    "scoped": {
+      "type": "boolean"
+    },
+    "scrollamount": {},
+    "scrolldelay": {},
+    "shape": {
+      "attribOption": [
+        "circle",
+        "default",
+        "poly",
+        "rect"
+      ]
+    },
+    "size": {},
+    "sizes": {
+      "attribOption": [
+        "any"
+      ]
+    },
+    "span": {},
+    "src": {},
+    "srcdoc": {},
+    "srclang": {},
+    "standby": {},
+    "start": {},
+    "step": {},
+    "target": {
+      "attribOption": [
+        "_blank",
+        "_parent",
+        "_self",
+        "_top"
+      ]
+    },
+    "truespeed": {
+      "type": "flag"
+    },
+    "type": {},
+    "button/type": {
+      "attribOption": [
+        "button",
+        "reset",
+        "submit"
+      ]
+    },
+    "command/type": {
+      "attribOption": [
+        "command",
+        "checkbox",
+        "radio"
+      ]
+    },
+    "link/type": {
+      "attribOption": [
+        "text/css"
+      ]
+    },
+    "menu/type": {
+      "attribOption": [
+        "context",
+        "list",
+        "toolbar"
+      ]
+    },
+    "ol/type": {
+      "attribOption": [
+        "1",
+        "a",
+        "A",
+        "i",
+        "I"
+      ]
+    },
+    "script/type": {
+      "attribOption": [
+        "text/javascript",
+        "text/ecmascript",
+        "text/jscript",
+        "text/livescript",
+        "text/tcl",
+        "text/x-javascript",
+        "text/x-ecmascript",
+        "application/x-javascript",
+        "application/x-ecmascript",
+        "application/javascript",
+        "application/ecmascript",
+        "text/babel",
+        "text/jsx"
+      ]
+    },
+    "style/type": {
+      "attribOption": [
+        "text/css"
+      ]
+    },
+    "input/type": {
+      "attribOption": [
+        "button",
+        "checkbox",
+        "color",
+        "date",
+        "datetime",
+        "datetime-local",
+        "email",
+        "file",
+        "hidden",
+        "image",
+        "month",
+        "number",
+        "password",
+        "radio",
+        "range",
+        "reset",
+        "search",
+        "submit",
+        "tel",
+        "text",
+        "time",
+        "url",
+        "week"
+      ]
+    },
+    "usemap": {},
+    "value": {},
+    "vspace": {},
+    "width": {},
+    "wrap": {
+      "attribOption": [
+        "hard",
+        "soft"
+      ]
+    },
+    "xml:lang": {},
+    "xmlns": {}
+  }
+}
diff --git a/packages/autocomplete-html/fetch-global-attribute-docs.js b/packages/autocomplete-html/fetch-global-attribute-docs.js
new file mode 100644
index 000000000..84eae6b47
--- /dev/null
+++ b/packages/autocomplete-html/fetch-global-attribute-docs.js
@@ -0,0 +1,113 @@
+const path = require('path')
+const fs = require('fs')
+const request = require('request')
+
+const mdnHTMLURL = 'https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes'
+const mdnJSONAPI = 'https://developer.mozilla.org/en-US/search.json?topic=html&highlight=false'
+const AttributesURL = 'https://raw.githubusercontent.com/adobe/brackets/master/src/extensions/default/HTMLCodeHints/HtmlAttributes.json'
+
+const fetch = () => {
+  const attributesPromise = new Promise((resolve) => {
+    request({json: true, url: AttributesURL}, (error, response, attributes) => {
+      if (error) {
+        console.error(error.message)
+        resolve(null)
+      }
+
+      if (response.statusCode !== 200) {
+        console.error(`Request for HtmlAttributes.json failed: ${response.statusCode}`)
+        resolve(null)
+      }
+
+      resolve(attributes)
+    })
+  })
+
+  attributesPromise.then((attributes) => {
+    if (!attributes) return
+
+    const MAX = 10
+    const queue = []
+    for (let attribute in attributes) {
+      // MDN is missing docs for aria attributes and on* event handlers
+      const options = attributes[attribute]
+      if (options.global && !attribute.startsWith('aria') && !attribute.startsWith('on') && (attribute !== 'role')) {
+        queue.push(attribute)
+      }
+    }
+    const running = []
+    const docs = {}
+
+    return new Promise((resolve) => {
+      const checkEnd = () => {
+        if ((queue.length === 0) && (running.length === 0)) resolve(docs)
+      }
+
+      const removeRunning = (attributeName) => {
+        const index = running.indexOf(attributeName)
+        if (index > -1) { running.splice(index, 1) }
+      }
+
+      const runNext = () => {
+        checkEnd()
+        if (queue.length !== 0) {
+          const attributeName = queue.pop()
+          running.push(attributeName)
+          run(attributeName)
+        }
+      }
+
+      var run = (attributeName) => {
+        const url = `${mdnJSONAPI}&q=${attributeName}`
+        request({json: true, url}, (error, response, searchResults) => {
+          if (!error && response.statusCode === 200) {
+            handleRequest(attributeName, searchResults)
+          } else {
+            console.error(`Req failed ${url}; ${response.statusCode}, ${error}`)
+          }
+          removeRunning(attributeName)
+          runNext()
+        })
+      }
+
+      var handleRequest = (attributeName, searchResults) => {
+        if (searchResults.documents) {
+          for (let doc of searchResults.documents) {
+            if (doc.url === `${mdnHTMLURL}/${attributeName}`) {
+              docs[attributeName] = filterExcerpt(attributeName, doc.excerpt)
+              return
+            }
+          }
+        }
+        console.log(`Could not find documentation for ${attributeName}`)
+      }
+
+      for (let i = 0; i <= MAX; i++) runNext()
+    })
+  })
+}
+
+var filterExcerpt = (attributeName, excerpt) => {
+  const beginningPattern = /^the [a-z-]+ global attribute (is )?(\w+)/i
+  excerpt = excerpt.replace(beginningPattern, (match) => {
+    const matches = beginningPattern.exec(match)
+    const firstWord = matches[2]
+    return firstWord[0].toUpperCase() + firstWord.slice(1)
+  })
+  const periodIndex = excerpt.indexOf('.')
+  if (periodIndex > -1) { excerpt = excerpt.slice(0, periodIndex + 1) }
+  return excerpt
+}
+
+// Save a file if run from the command line
+if (require.main === module) {
+  fetch().then((docs) => {
+    if (docs) {
+      fs.writeFileSync(path.join(__dirname, 'global-attribute-docs.json'), `${JSON.stringify(docs, null, '  ')}\n`)
+    } else {
+      console.error('No docs')
+    }
+  })
+}
+
+module.exports = fetch
diff --git a/packages/autocomplete-html/fetch-tag-docs.js b/packages/autocomplete-html/fetch-tag-docs.js
new file mode 100644
index 000000000..fb464b211
--- /dev/null
+++ b/packages/autocomplete-html/fetch-tag-docs.js
@@ -0,0 +1,120 @@
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS202: Simplify dynamic range loops
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const path = require('path')
+const fs = require('fs')
+const request = require('request')
+
+const mdnHTMLURL = 'https://developer.mozilla.org/en-US/docs/Web/HTML/Element'
+const mdnJSONAPI = 'https://developer.mozilla.org/en-US/search.json?topic=html&highlight=false'
+const TagsURL = 'https://raw.githubusercontent.com/adobe/brackets/master/src/extensions/default/HTMLCodeHints/HtmlTags.json'
+
+const fetch = () => {
+  const tagsPromise = new Promise((resolve) => {
+    request({json: true, url: TagsURL}, (error, response, tags) => {
+      if (error != null) {
+        console.error(error.message)
+        resolve(null)
+      }
+
+      if (response.statusCode !== 200) {
+        console.error(`Request for HtmlTags.json failed: ${response.statusCode}`)
+        resolve(null)
+      }
+
+      resolve(tags)
+    })
+  })
+
+  return tagsPromise.then((tags) => {
+    if (!tags) return
+
+    const MAX = 10
+    const queue = Object.keys(tags)
+    const running = []
+    const docs = {}
+
+    return new Promise((resolve) => {
+      const checkEnd = () => {
+        if ((queue.length === 0) && (running.length === 0)) resolve(docs)
+      }
+
+      const removeRunning = (tagName) => {
+        const index = running.indexOf(tagName)
+        if (index > -1) { return running.splice(index, 1) }
+      }
+
+      const runNext = () => {
+        checkEnd()
+        if (queue.length !== 0) {
+          const tagName = queue.pop()
+          running.push(tagName)
+          run(tagName)
+        }
+      }
+
+      var run = (tagName) => {
+        const url = `${mdnJSONAPI}&q=${tagName}`
+        request({json: true, url}, (error, response, searchResults) => {
+          if ((error == null) && (response.statusCode === 200)) {
+            handleRequest(tagName, searchResults)
+          } else {
+            console.error(`Req failed ${url}; ${response.statusCode}, ${error}`)
+          }
+          removeRunning(tagName)
+          runNext()
+        })
+      }
+
+      var handleRequest = (tagName, searchResults) => {
+        if (searchResults.documents != null) {
+          for (let doc of searchResults.documents) {
+            // MDN groups h1 through h6 under a single "Heading Elements" page
+            if ((doc.url === `${mdnHTMLURL}/${tagName}`) || (/^h\d$/.test(tagName) && (doc.url === `${mdnHTMLURL}/Heading_Elements`))) {
+              if (doc.tags.includes('Obsolete')) {
+                docs[tagName] = `The ${tagName} element is obsolete. Avoid using it and update existing code if possible.`
+              } else if (doc.tags.includes('Deprecated')) {
+                docs[tagName] = `The ${tagName} element is deprecated. Avoid using it and update existing code if possible.`
+              } else {
+                docs[tagName] = filterExcerpt(tagName, doc.excerpt)
+              }
+              return
+            }
+          }
+        }
+        console.log(`Could not find documentation for ${tagName}`)
+      }
+
+      for (let i = 0; i <= MAX; i++) { runNext() }
+    })
+  })
+}
+
+var filterExcerpt = (tagName, excerpt) => {
+  const beginningPattern = /^the html [a-z-]+ element (\([^)]+\) )?(is )?(\w+)/i
+  excerpt = excerpt.replace(beginningPattern, (match) => {
+    const matches = beginningPattern.exec(match)
+    const firstWord = matches[3]
+    return firstWord[0].toUpperCase() + firstWord.slice(1)
+  })
+  const periodIndex = excerpt.indexOf('.')
+  if (periodIndex > -1) { excerpt = excerpt.slice(0, periodIndex + 1) }
+  return excerpt
+}
+
+// Save a file if run from the command line
+if (require.main === module) {
+  fetch().then((docs) => {
+    if (docs != null) {
+      fs.writeFileSync(path.join(__dirname, 'tag-docs.json'), `${JSON.stringify(docs, null, '  ')}\n`)
+    } else {
+      console.error('No docs')
+    }
+  })
+}
+
+module.exports = fetch
diff --git a/packages/autocomplete-html/lib/helpers.js b/packages/autocomplete-html/lib/helpers.js
new file mode 100644
index 000000000..0a67e3e22
--- /dev/null
+++ b/packages/autocomplete-html/lib/helpers.js
@@ -0,0 +1,132 @@
+const COMPLETIONS = require('../completions.json')
+
+function getTagNameCompletions (prefix) {
+  const completions = []
+  for (const tag in COMPLETIONS.tags) {
+    const options = COMPLETIONS.tags[tag]
+    if (firstCharsEqual(tag, prefix)) {
+      const {description} = options
+      completions.push({
+        text: tag,
+        type: 'tag',
+        description: description || `HTML <${tag}> tag`,
+        descriptionMoreURL: description ? getTagDocsURL(tag) : null
+      })
+    }
+  }
+  return completions
+}
+
+function getAttributeNameCompletions (tag, prefix) {
+  const completions = []
+  const tagAttributes = getTagAttributes(tag)
+
+  for (const attribute of tagAttributes) {
+    if (firstCharsEqual(attribute, prefix)) {
+      const options = COMPLETIONS.attributes[attribute]
+      completions.push({
+        snippet: (options && options.type === 'flag') ? attribute : `${attribute}="$1"$0`,
+        displayText: attribute,
+        type: 'attribute',
+        rightLabel: `<${tag}>`,
+        description: `${attribute} attribute local to <${tag}> tags`,
+        descriptionMoreURL: getLocalAttributeDocsURL(attribute, tag)
+      })
+    }
+  }
+
+  for (const attribute in COMPLETIONS.attributes) {
+    const options = COMPLETIONS.attributes[attribute]
+    if (options.global && firstCharsEqual(attribute, prefix)) {
+      completions.push({
+        snippet: options.type === 'flag' ? attribute : `${attribute}="$1"$0`,
+        displayText: attribute,
+        type: 'attribute',
+        description: options.description ? options.description : `Global ${attribute} attribute`,
+        descriptionMoreURL: options.description ? getGlobalAttributeDocsURL(attribute) : null
+      })
+    }
+  }
+
+  return completions
+}
+
+function getAttributeValueCompletions (tag, attribute, prefix) {
+  const completions = []
+
+  const values = getAttributeValues(tag, attribute)
+  for (const value of values) {
+    if (firstCharsEqual(value, prefix)) {
+      completions.push(buildAttributeValueCompletion(tag, attribute, value))
+    }
+  }
+
+  if (
+    completions.length === 0 &&
+    COMPLETIONS.attributes[attribute] &&
+    COMPLETIONS.attributes[attribute].type === 'boolean'
+  ) {
+    completions.push(buildAttributeValueCompletion(tag, attribute, 'true'))
+    completions.push(buildAttributeValueCompletion(tag, attribute, 'false'))
+  }
+
+  return completions
+}
+
+function buildAttributeValueCompletion (tag, attribute, value) {
+  if (COMPLETIONS.attributes[attribute].global) {
+    return {
+      text: value,
+      type: 'value',
+      description: `${value} value for global ${attribute} attribute`,
+      descriptionMoreURL: getGlobalAttributeDocsURL(attribute)
+    }
+  } else {
+    return {
+      text: value,
+      type: 'value',
+      rightLabel: `<${tag}>`,
+      description: `${value} value for ${attribute} attribute local to <${tag}>`,
+      descriptionMoreURL: getLocalAttributeDocsURL(attribute, tag)
+    }
+  }
+}
+
+function getAttributeValues (tag, attribute) {
+  // Some local attributes are valid for multiple tags but have different attribute values
+  // To differentiate them, they are identified in the completions file as tag/attribute
+  let result = COMPLETIONS.attributes[`${tag}/${attribute}`]
+  if (result && result.attribOption) return result.attribOption
+  result = COMPLETIONS.attributes[attribute]
+  if (result && result.attribOption) return result.attribOption
+  return []
+}
+
+function getTagAttributes (tag) {
+  let result = COMPLETIONS.tags[tag]
+  if (result && result.attributes) return result.attributes
+  return []
+}
+
+function getLocalAttributeDocsURL (attribute, tag) {
+  return `${getTagDocsURL(tag)}#attr-${attribute}`
+}
+
+function getGlobalAttributeDocsURL (attribute) {
+  return `https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/${attribute}`
+}
+
+function getTagDocsURL (tag) {
+  return `https://developer.mozilla.org/en-US/docs/Web/HTML/Element/${tag}`
+}
+
+function firstCharsEqual (a, b) {
+  if (b.length === 0) return true
+  return a[0].toLowerCase() === b[0].toLowerCase()
+}
+
+module.exports = {
+  getTagNameCompletions,
+  getAttributeNameCompletions,
+  getAttributeValueCompletions
+}
diff --git a/packages/autocomplete-html/lib/main.js b/packages/autocomplete-html/lib/main.js
new file mode 100644
index 000000000..94fbe1f3d
--- /dev/null
+++ b/packages/autocomplete-html/lib/main.js
@@ -0,0 +1,36 @@
+const getSuggestionsWithTreeSitter = require('./tree-sitter-provider')
+const getSuggestionsWithTextMate = require('./text-mate-provider')
+
+const provider = {
+  selector: '.text.html',
+  disableForSelector: '.text.html .comment',
+  priority: 1,
+  filterSuggestions: true,
+
+  getSuggestions (request) {
+    if (request.editor.getBuffer().getLanguageMode().tree) {
+      return getSuggestionsWithTreeSitter(request)
+    } else {
+      return getSuggestionsWithTextMate(request)
+    }
+  },
+
+  onDidInsertSuggestion ({editor, suggestion}) {
+    if (suggestion.type === 'attribute') {
+      setTimeout(this.triggerAutocomplete.bind(this, editor), 1)
+    }
+  },
+
+  triggerAutocomplete (editor) {
+    atom.commands.dispatch(
+      editor.getElement(),
+      'autocomplete-plus:activate',
+      {activatedManually: false}
+    )
+  }
+}
+
+module.exports = {
+  activate () {},
+  getProvider () { return provider }
+}
diff --git a/packages/autocomplete-html/lib/text-mate-provider.js b/packages/autocomplete-html/lib/text-mate-provider.js
new file mode 100644
index 000000000..8ed596552
--- /dev/null
+++ b/packages/autocomplete-html/lib/text-mate-provider.js
@@ -0,0 +1,127 @@
+const {
+  getTagNameCompletions,
+  getAttributeNameCompletions,
+  getAttributeValueCompletions
+} = require('./helpers')
+
+const attributePattern = /\s+([a-zA-Z][-a-zA-Z]*)\s*=\s*$/
+const tagPattern = /<([a-zA-Z][-a-zA-Z]*)(?:\s|$)/
+
+module.exports = function (request) {
+  let {editor, bufferPosition, prefix} = request
+  prefix = prefix.trim()
+
+  if (isAttributeValueStart(request)) {
+    const tag = getPreviousTag(editor, bufferPosition)
+    const attribute = getPreviousAttribute(editor, bufferPosition)
+    return getAttributeValueCompletions(tag, attribute, prefix)
+  }
+
+  if (isAttributeStart(request)) {
+    const tag = getPreviousTag(editor, bufferPosition)
+    return getAttributeNameCompletions(tag, prefix)
+  }
+
+  if (isTagStart(request)) {
+    const ignorePrefix = editor.getTextInRange([
+      [bufferPosition.row, bufferPosition.column - 1],
+      bufferPosition
+    ]) === '<'
+    return getTagNameCompletions(ignorePrefix ? '' : prefix)
+  }
+
+  return []
+}
+
+function isTagStart ({prefix, scopeDescriptor, bufferPosition, editor}) {
+  if (prefix.trim() && (prefix.indexOf('<') === -1)) {
+    return hasTagScope(scopeDescriptor.getScopesArray())
+  }
+
+  // autocomplete-plus's default prefix setting does not capture <. Manually check for it.
+  prefix = editor.getTextInRange([[bufferPosition.row, bufferPosition.column - 1], bufferPosition])
+
+  const scopes = scopeDescriptor.getScopesArray()
+
+  // Don't autocomplete in embedded languages
+  return (prefix === '<') && (scopes[0] === 'text.html.basic') && (scopes.length === 1)
+}
+
+function isAttributeStart ({prefix, scopeDescriptor, bufferPosition, editor}) {
+  const scopes = scopeDescriptor.getScopesArray()
+  if (!getPreviousAttribute(editor, bufferPosition) && prefix && !prefix.trim()) {
+    return hasTagScope(scopes)
+  }
+
+  const previousBufferPosition = [bufferPosition.row, Math.max(0, bufferPosition.column - 1)]
+  const previousScopes = editor.scopeDescriptorForBufferPosition(previousBufferPosition)
+  const previousScopesArray = previousScopes.getScopesArray()
+
+  if (previousScopesArray.includes('entity.other.attribute-name.html')) return true
+  if (!hasTagScope(scopes)) return false
+
+  // autocomplete here: <tag |>
+  // not here: <tag >|
+  return (
+    scopes.includes('punctuation.definition.tag.end.html') &&
+    !previousScopesArray.includes('punctuation.definition.tag.end.html')
+  )
+}
+
+function isAttributeValueStart ({scopeDescriptor, bufferPosition, editor}) {
+  const scopes = scopeDescriptor.getScopesArray()
+
+  const previousBufferPosition = [bufferPosition.row, Math.max(0, bufferPosition.column - 1)]
+  const previousScopes = editor.scopeDescriptorForBufferPosition(previousBufferPosition)
+  const previousScopesArray = previousScopes.getScopesArray()
+
+  // autocomplete here: attribute="|"
+  // not here: attribute=|""
+  // or here: attribute=""|
+  // or here: attribute="""|
+  return (
+    hasStringScope(scopes) &&
+    hasStringScope(previousScopesArray) &&
+    !previousScopesArray.includes('punctuation.definition.string.end.html') &&
+    hasTagScope(scopes) &&
+    getPreviousAttribute(editor, bufferPosition) != null
+  )
+}
+
+function hasTagScope (scopes) {
+  for (let scope of scopes) {
+    if (scope.startsWith('meta.tag.') && scope.endsWith('.html')) return true
+  }
+  return false
+}
+
+function hasStringScope (scopes) {
+  return (
+    scopes.includes('string.quoted.double.html') ||
+    scopes.includes('string.quoted.single.html')
+  )
+}
+
+function getPreviousTag (editor, bufferPosition) {
+  let {row} = bufferPosition
+  while (row >= 0) {
+    const match = tagPattern.exec(editor.lineTextForBufferRow(row))
+    const tag = match && match[1]
+    if (tag) return tag
+    row--
+  }
+}
+
+function getPreviousAttribute (editor, bufferPosition) {
+  // Remove everything until the opening quote (if we're in a string)
+  let quoteIndex = bufferPosition.column - 1 // Don't start at the end of the line
+  while (quoteIndex) {
+    const scopes = editor.scopeDescriptorForBufferPosition([bufferPosition.row, quoteIndex])
+    const scopesArray = scopes.getScopesArray()
+    if (!hasStringScope(scopesArray) || (scopesArray.indexOf('punctuation.definition.string.begin.html') !== -1)) break
+    quoteIndex--
+  }
+
+  const match = attributePattern.exec(editor.getTextInRange([[bufferPosition.row, 0], [bufferPosition.row, quoteIndex]]))
+  return match && match[1]
+}
diff --git a/packages/autocomplete-html/lib/tree-sitter-provider.js b/packages/autocomplete-html/lib/tree-sitter-provider.js
new file mode 100644
index 000000000..81031c052
--- /dev/null
+++ b/packages/autocomplete-html/lib/tree-sitter-provider.js
@@ -0,0 +1,126 @@
+const {
+  getTagNameCompletions,
+  getAttributeNameCompletions,
+  getAttributeValueCompletions
+} = require('./helpers')
+
+module.exports = function ({editor, bufferPosition}) {
+  let node = tokenBeforePosition(editor, bufferPosition)
+  if (!node) return []
+
+  switch (node.type) {
+    case '<': {
+      if (!bufferPosition.isEqual(node.endPosition)) break
+      return getTagNameCompletions('')
+    }
+
+    case 'tag_name': {
+      if (bufferPosition.isEqual(node.endPosition)) {
+        const {previousSibling} = node
+        if (previousSibling && previousSibling.endIndex === node.startIndex) {
+          return getTagNameCompletions(node.text)
+        }
+      } else {
+        return getAttributeNameCompletions(node.text, '')
+      }
+      break
+    }
+
+    case 'attribute_name': {
+      if (!bufferPosition.isEqual(node.endPosition)) break
+      const tagNode = node.parent.parent
+      const tagNameNode = tagNode.child(1)
+      if (tagNameNode) {
+        return getAttributeNameCompletions(tagNameNode.text, node.text)
+      }
+      break
+    }
+
+    case 'attribute_value':
+    case '"':
+    case '\'': {
+      let prefix = ''
+      if (node.type === 'attribute_value') {
+        prefix = node.text
+        node = node.previousSibling
+      }
+
+      const predecessor = tokenBefore(node)
+      if (!predecessor || predecessor.type !== '=') return []
+      const containerNode = node.closest(['start_tag', 'self_closing_tag', 'ERROR'])
+      const tagNameNode = containerNode.descendantsOfType(
+        'tag_name'
+      )[0]
+
+      // Get the last attribute name before the quote
+      const attributeNameNode = containerNode.descendantsOfType(
+        'attribute_name',
+        null,
+        node.startPosition
+      ).pop()
+      if (tagNameNode && attributeNameNode) {
+        return getAttributeValueCompletions(tagNameNode.text, attributeNameNode.text, prefix)
+      }
+      break
+    }
+  }
+
+  return []
+}
+
+function tokenBeforePosition (editor, position) {
+  const languageMode = editor.getBuffer().getLanguageMode()
+  let node = languageMode.getSyntaxNodeAtPosition(
+    position,
+    (node, grammar) => grammar.scopeName === 'text.html.basic'
+  )
+  if (!node) return null
+  node = lastDescendant(node)
+
+  while (
+    position.isLessThan(node.endPosition) ||
+    node.isMissing() ||
+    node.type === 'text'
+  ) {
+    node = tokenBefore(node)
+    if (!node) return null
+  }
+
+  return node
+}
+
+const nodesToSearch = new Set([
+  '<',
+  'tag_name',
+  'attribute_name',
+  'attribute_value',
+  '"',
+  '\''
+])
+
+function tokenBefore (node) {
+  for (;;) {
+    const {previousSibling} = node
+    if (previousSibling) {
+      return lastDescendant(previousSibling)
+    }
+
+    const {parent} = node
+    if (parent) {
+      node = parent
+      if(nodesToSearch.has(node.type)) return node
+      continue
+    }
+
+    return null
+  }
+}
+
+function lastDescendant (node) {
+  let {lastChild} = node
+  while (lastChild) {
+    node = lastChild
+    lastChild = node.lastChild
+  }
+  return node
+}
diff --git a/packages/autocomplete-html/package-lock.json b/packages/autocomplete-html/package-lock.json
new file mode 100644
index 000000000..b089e5931
--- /dev/null
+++ b/packages/autocomplete-html/package-lock.json
@@ -0,0 +1,873 @@
+{
+  "name": "autocomplete-html",
+  "version": "0.8.9",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "autocomplete-html",
+      "version": "0.8.9",
+      "license": "MIT",
+      "devDependencies": {
+        "request": "^2.53.0"
+      },
+      "engines": {
+        "atom": ">=0.174.0 <2.0.0"
+      }
+    },
+    "node_modules/ajv": {
+      "version": "6.12.6",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
+      "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
+      "dev": true,
+      "dependencies": {
+        "fast-deep-equal": "^3.1.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
+      }
+    },
+    "node_modules/asn1": {
+      "version": "0.2.6",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.6.tgz",
+      "integrity": "sha512-ix/FxPn0MDjeyJ7i/yoHGFt/EX6LyNbxSEhPPXODPL+KB0VPk86UYfL0lMdy+KCnv+fmvIzySwaK5COwqVbWTQ==",
+      "dev": true,
+      "dependencies": {
+        "safer-buffer": "~2.1.0"
+      }
+    },
+    "node_modules/assert-plus": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha512-NfJ4UzBCcQGLDlQq7nHxH+tv3kyZ0hHQqF5BO6J7tNJeP5do1llPr8dZ8zHonfhAu0PHAdMkSo+8o0wxg9lZWw==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
+    "node_modules/asynckit": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+      "integrity": "sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==",
+      "dev": true
+    },
+    "node_modules/aws-sign2": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha512-08kcGqnYf/YmjoRhfxyu+CLxBjUtHLXLXX/vUfx9l2LYzG3c1m61nrpyFUZI6zeS+Li/wWMMidD9KgrqtGq3mA==",
+      "dev": true,
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/aws4": {
+      "version": "1.11.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.11.0.tgz",
+      "integrity": "sha512-xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA==",
+      "dev": true
+    },
+    "node_modules/bcrypt-pbkdf": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+      "integrity": "sha512-qeFIXtP4MSoi6NLqO12WfqARWWuCKi2Rn/9hJLEmtB5yTNr9DqFWkJRCf2qShWzPeAMRnOgCrq0sg/KLv5ES9w==",
+      "dev": true,
+      "dependencies": {
+        "tweetnacl": "^0.14.3"
+      }
+    },
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diff --git a/packages/autocomplete-html/package.json b/packages/autocomplete-html/package.json
new file mode 100644
index 000000000..5a0eafd85
--- /dev/null
+++ b/packages/autocomplete-html/package.json
@@ -0,0 +1,21 @@
+{
+  "name": "autocomplete-html",
+  "version": "0.8.9",
+  "description": "HTML element and attribute autocompletions",
+  "main": "./lib/main",
+  "license": "MIT",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "engines": {
+    "atom": ">=0.174.0 <2.0.0"
+  },
+  "providedServices": {
+    "autocomplete.provider": {
+      "versions": {
+        "2.0.0": "getProvider"
+      }
+    }
+  },
+  "devDependencies": {
+    "request": "^2.53.0"
+  }
+}
diff --git a/packages/autocomplete-html/spec/provider-spec.js b/packages/autocomplete-html/spec/provider-spec.js
new file mode 100644
index 000000000..38c2f8346
--- /dev/null
+++ b/packages/autocomplete-html/spec/provider-spec.js
@@ -0,0 +1,521 @@
+describe('HTML autocompletions', () => {
+  let editor, provider
+
+  function getCompletions () {
+    const cursor = editor.getLastCursor()
+    const bufferPosition = cursor.getBufferPosition()
+    const scopeDescriptor = cursor.getScopeDescriptor()
+    const line = editor.getTextInRange([[bufferPosition.row, 0], bufferPosition])
+    // https://github.com/atom/autocomplete-plus/blob/9506a5c5fafca29003c59566cfc2b3ac37080973/lib/autocomplete-manager.js#L57
+    const prefixMatch = /(\b|['"~`!@#$%^&*(){}[\]=+,/?>])((\w+[\w-]*)|([.:;[{(< ]+))$/.exec(line)
+    const prefix = prefixMatch ? prefixMatch[2] : ''
+    return provider.getSuggestions({editor, bufferPosition, scopeDescriptor, prefix})
+  }
+
+  beforeEach(() => {
+    waitsForPromise(() => atom.packages.activatePackage('autocomplete-html'))
+    waitsForPromise(() => atom.packages.activatePackage('language-html'))
+    waitsForPromise(() => atom.workspace.open('test.html'))
+
+    runs(() => provider = atom.packages.getActivePackage('autocomplete-html').mainModule.getProvider())
+    runs(() => editor = atom.workspace.getActiveTextEditor())
+  })
+
+  it('returns no completions when not at the start of a tag', () => {
+    editor.setText('')
+    expect(getCompletions().length).toBe(0)
+
+    editor.setText('d')
+    editor.setCursorBufferPosition([0, 0])
+    expect(getCompletions().length).toBe(0)
+    editor.setCursorBufferPosition([0, 1])
+    expect(getCompletions().length).toBe(0)
+  })
+
+  it('returns no completions in style tags', () => {
+    editor.setText(`\
+<style>
+<
+</style>\
+`
+    )
+    editor.setCursorBufferPosition([1, 1])
+    expect(getCompletions().length).toBe(0)
+  })
+
+  it('returns no completions in script tags', () => {
+    editor.setText(`\
+<script>
+<
+</script>\
+`
+    )
+    editor.setCursorBufferPosition([1, 1])
+    expect(getCompletions().length).toBe(0)
+  })
+
+  it('autcompletes tag names without a prefix', () => {
+    editor.setText('<')
+    editor.setCursorBufferPosition([0, 1])
+
+    const completions = getCompletions()
+    expect(completions.length).toBe(113)
+    expect(completions[0].description).toContain('Creates a hyperlink to other web pages')
+    expect(completions[0].descriptionMoreURL.endsWith('/HTML/Element/a')).toBe(true)
+
+    for (let completion of completions) {
+      expect(completion.text.length).toBeGreaterThan(0)
+      expect(completion.description.length).toBeGreaterThan(0)
+      expect(completion.type).toBe('tag')
+    }
+  })
+
+  it('autocompletes tag names with a prefix', () => {
+    editor.setText('<d')
+    editor.setCursorBufferPosition([0, 2])
+
+    let completions = getCompletions()
+    expect(completions.length).toBe(9)
+
+    expect(completions[0].text).toBe('datalist')
+    expect(completions[0].type).toBe('tag')
+    expect(completions[0].descriptionMoreURL.endsWith('/HTML/Element/datalist')).toBe(true)
+    expect(completions[1].text).toBe('dd')
+    expect(completions[2].text).toBe('del')
+    expect(completions[3].text).toBe('details')
+    expect(completions[4].text).toBe('dfn')
+    expect(completions[5].text).toBe('dialog')
+    expect(completions[6].text).toBe('div')
+    expect(completions[7].text).toBe('dl')
+    expect(completions[8].text).toBe('dt')
+
+    editor.setText('<D')
+    editor.setCursorBufferPosition([0, 2])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(9)
+
+    expect(completions[0].text).toBe('datalist')
+    expect(completions[0].type).toBe('tag')
+    expect(completions[1].text).toBe('dd')
+    expect(completions[2].text).toBe('del')
+    expect(completions[3].text).toBe('details')
+    expect(completions[4].text).toBe('dfn')
+    expect(completions[5].text).toBe('dialog')
+    expect(completions[6].text).toBe('div')
+    expect(completions[7].text).toBe('dl')
+    expect(completions[8].text).toBe('dt')
+  })
+
+  it("does not autocomplete tag names if there's a space after the <", () => {
+    editor.setText('< ')
+    editor.setCursorBufferPosition([0, 2])
+
+    let completions = getCompletions()
+    expect(completions.length).toBe(0)
+
+    editor.setText('< h')
+    editor.setCursorBufferPosition([0, 2])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(0)
+  })
+
+  it('does not provide a descriptionMoreURL if the tag does not have a unique description', () => {
+    // ilayer does not have an associated MDN page as of April 27, 2017
+    editor.setText('<i')
+    editor.setCursorBufferPosition([0, 2])
+
+    const completions = getCompletions()
+
+    expect(completions[2].text).toBe('ilayer')
+    expect(completions[2].description).toBe('HTML <ilayer> tag')
+    expect(completions[2].descriptionMoreURL).toBeNull()
+  })
+
+  it('autocompletes attribute names without a prefix', () => {
+    editor.setText('<div ')
+    editor.setCursorBufferPosition([0, 5])
+
+    let completions = getCompletions()
+    expect(completions.length).toBe(86)
+    expect(completions[0].description).toContain('Provides a hint for generating a keyboard shortcut')
+    expect(completions[0].descriptionMoreURL.endsWith('/HTML/Global_attributes/accesskey')).toBe(true)
+
+    for (var completion of completions) {
+      expect(completion.snippet.length).toBeGreaterThan(0)
+      expect(completion.displayText.length).toBeGreaterThan(0)
+      expect(completion.description.length).toBeGreaterThan(0)
+      expect(completion.type).toBe('attribute')
+    }
+
+    editor.setText('<marquee ')
+    editor.setCursorBufferPosition([0, 9])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(98)
+    expect(completions[0].rightLabel).toBe('<marquee>')
+    expect(completions[0].descriptionMoreURL.endsWith('/HTML/Element/marquee#attr-align')).toBe(true)
+
+    for (completion of completions) {
+      expect(completion.snippet.length).toBeGreaterThan(0)
+      expect(completion.displayText.length).toBeGreaterThan(0)
+      expect(completion.description.length).toBeGreaterThan(0)
+      expect(completion.type).toBe('attribute')
+    }
+
+    editor.setText('<div >')
+    editor.setCursorBufferPosition([0, 5])
+
+    completions = getCompletions()
+    expect(completions.length).toBeGreaterThan(0)
+    for (completion of completions) { expect(completion.type).toBe('attribute') }
+
+    editor.setText('<div  >')
+    editor.setCursorBufferPosition([0, 5])
+
+    completions = getCompletions()
+    expect(completions.length).toBeGreaterThan(0)
+    for (completion of completions) {
+      expect(completion.type).toBe('attribute')
+    }
+  })
+
+  it('autocompletes attribute names with a prefix', () => {
+    editor.setText('<div c')
+    editor.setCursorBufferPosition([0, 6])
+
+    let completions = getCompletions()
+    expect(completions.length).toBe(3)
+
+    expect(completions[0].snippet).toBe('class="$1"$0')
+    expect(completions[0].displayText).toBe('class')
+    expect(completions[0].type).toBe('attribute')
+    expect(completions[1].displayText).toBe('contenteditable')
+    expect(completions[2].displayText).toBe('contextmenu')
+
+    editor.setText('<div C')
+    editor.setCursorBufferPosition([0, 6])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(3)
+
+    expect(completions[0].displayText).toBe('class')
+    expect(completions[1].displayText).toBe('contenteditable')
+    expect(completions[2].displayText).toBe('contextmenu')
+
+    editor.setText('<div c>')
+    editor.setCursorBufferPosition([0, 6])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(3)
+
+    expect(completions[0].displayText).toBe('class')
+    expect(completions[1].displayText).toBe('contenteditable')
+    expect(completions[2].displayText).toBe('contextmenu')
+
+    editor.setText('<div c></div>')
+    editor.setCursorBufferPosition([0, 6])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(3)
+
+    expect(completions[0].displayText).toBe('class')
+    expect(completions[1].displayText).toBe('contenteditable')
+    expect(completions[2].displayText).toBe('contextmenu')
+
+    editor.setText('<marquee di')
+    editor.setCursorBufferPosition([0, 12])
+
+    completions = getCompletions()
+    expect(completions[0].displayText).toBe('direction')
+    expect(completions[1].displayText).toBe('dir')
+
+    editor.setText('<marquee dI')
+    editor.setCursorBufferPosition([0, 12])
+
+    completions = getCompletions()
+    expect(completions[0].displayText).toBe('direction')
+    expect(completions[1].displayText).toBe('dir')
+  })
+
+  it('autocompletes attribute names without a prefix surrounded by whitespace', () => {
+    editor.setText('<select  autofocus')
+    editor.setCursorBufferPosition([0, 8])
+
+    const completions = getCompletions()
+    for (let completion of completions) { expect(completion.type).toBe('attribute') }
+    expect(completions[0].displayText).toBe('autofocus')
+  })
+
+  it('autocompletes attribute names with a prefix surrounded by whitespace', () => {
+    editor.setText('<select o autofocus')
+    editor.setCursorBufferPosition([0, 9])
+
+    const completions = getCompletions()
+    for (let completion of completions) { expect(completion.type).toBe('attribute') }
+    expect(completions[0].displayText).toBe('onabort')
+  })
+
+  it("respects the 'flag' type when autocompleting attribute names", () => {
+    editor.setText('<select ')
+    editor.setCursorBufferPosition([0, 8])
+
+    const completions = getCompletions()
+    expect(completions[0].snippet).toBe('autofocus')
+  })
+
+  it('does not autocomplete attribute names in between an attribute name and value', () => {
+    editor.setText('<select autofocus=""')
+    editor.setCursorBufferPosition([0, 18])
+
+    let completions = getCompletions()
+    expect(completions.length).toBe(0)
+
+    editor.setText('<select autofocus= ""')
+    editor.setCursorBufferPosition([0, 18])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(0)
+
+    editor.setText('<select autofocus= ""')
+    editor.setCursorBufferPosition([0, 19])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(0)
+
+    editor.setText('<select autofocus=  ""')
+    editor.setCursorBufferPosition([0, 19])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(0)
+  })
+
+  it('does not autocomplete attribute names outside of a tag', () => {
+    editor.setText('<kbd>')
+    editor.setCursorBufferPosition([0, 0])
+
+    expect(getCompletions().length).toBe(0)
+
+    editor.setCursorBufferPosition([0, 5])
+
+    expect(getCompletions().length).toBe(0)
+  })
+
+  it('does not throw when a local attribute is not in the attributes list', () => {
+    // Some tags, like body, have local attributes that are not present in the top-level attributes array
+    editor.setText('<body ')
+    editor.setCursorBufferPosition([0, 6])
+
+    const completions = getCompletions()
+    expect(completions[0].displayText).toBe('onafterprint')
+  })
+
+  it('does not provide a descriptionMoreURL if the attribute does not have a unique description', () => {
+    editor.setText('<input on')
+    editor.setCursorBufferPosition([0, 9])
+
+    const completions = getCompletions()
+
+    expect(completions[0].displayText).toBe('onabort')
+    expect(completions[0].description).toBe('Global onabort attribute')
+    expect(completions[0].descriptionMoreURL).toBeNull()
+  })
+
+  it('autocompletes attribute values without a prefix', () => {
+    editor.setText('<marquee behavior=""')
+    editor.setCursorBufferPosition([0, 19])
+
+    let completions = getCompletions()
+    expect(completions.length).toBe(3)
+
+    expect(completions[0].text).toBe('scroll')
+    expect(completions[0].type).toBe('value')
+    expect(completions[0].description.length).toBeGreaterThan(0)
+    expect(completions[0].descriptionMoreURL.endsWith('/HTML/Element/marquee#attr-behavior')).toBe(true)
+    expect(completions[1].text).toBe('slide')
+    expect(completions[2].text).toBe('alternate')
+
+    editor.setText('<marquee behavior="')
+    editor.setCursorBufferPosition([0, 19])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(3)
+
+    expect(completions[0].text).toBe('scroll')
+    expect(completions[1].text).toBe('slide')
+    expect(completions[2].text).toBe('alternate')
+
+    editor.setText('<marquee behavior=\'')
+    editor.setCursorBufferPosition([0, 19])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(3)
+
+    expect(completions[0].text).toBe('scroll')
+    expect(completions[1].text).toBe('slide')
+    expect(completions[2].text).toBe('alternate')
+
+    editor.setText('<marquee behavior=\'\'')
+    editor.setCursorBufferPosition([0, 19])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(3)
+
+    expect(completions[0].text).toBe('scroll')
+    expect(completions[1].text).toBe('slide')
+    expect(completions[2].text).toBe('alternate')
+  })
+
+  it('autocompletes attribute values with a prefix', () => {
+    editor.setText('<html behavior="" lang="e"')
+    editor.setCursorBufferPosition([0, 25])
+
+    let completions = getCompletions()
+    expect(completions.length).toBe(6)
+
+    expect(completions[0].text).toBe('eu')
+    expect(completions[0].type).toBe('value')
+    expect(completions[1].text).toBe('en')
+    expect(completions[2].text).toBe('eo')
+    expect(completions[3].text).toBe('et')
+    expect(completions[4].text).toBe('el')
+    expect(completions[5].text).toBe('es')
+
+    editor.setText('<html behavior="" lang="E"')
+    editor.setCursorBufferPosition([0, 25])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(6)
+
+    expect(completions[0].text).toBe('eu')
+    expect(completions[1].text).toBe('en')
+    expect(completions[2].text).toBe('eo')
+    expect(completions[3].text).toBe('et')
+    expect(completions[4].text).toBe('el')
+    expect(completions[5].text).toBe('es')
+
+    editor.setText('<html behavior="" lang=\'e\'')
+    editor.setCursorBufferPosition([0, 25])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(6)
+
+    expect(completions[0].text).toBe('eu')
+    expect(completions[1].text).toBe('en')
+    expect(completions[2].text).toBe('eo')
+    expect(completions[3].text).toBe('et')
+    expect(completions[4].text).toBe('el')
+    expect(completions[5].text).toBe('es')
+  })
+
+  it('autocompletes ambiguous attribute values', () => {
+    editor.setText('<button type=""')
+    editor.setCursorBufferPosition([0, 14])
+
+    let completions = getCompletions()
+    expect(completions.length).toBe(3)
+
+    expect(completions[0].text).toBe('button')
+    expect(completions[0].type).toBe('value')
+    expect(completions[0].description.length).toBeGreaterThan(0)
+    expect(completions[0].descriptionMoreURL.endsWith('/HTML/Element/button#attr-type')).toBe(true)
+    expect(completions[1].text).toBe('reset')
+    expect(completions[2].text).toBe('submit')
+
+    editor.setText('<link rel=""')
+    editor.setCursorBufferPosition([0, 11])
+
+    completions = getCompletions()
+    expect(completions.length).toBe(13)
+    expect(completions.map(_ => _.text)).toContain('stylesheet')
+
+    expect(completions[0].text).toBe('alternate')
+    expect(completions[0].type).toBe('value')
+    expect(completions[0].description.length).toBeGreaterThan(0)
+    expect(completions[0].descriptionMoreURL.endsWith('/HTML/Element/link#attr-rel')).toBe(true)
+  })
+
+  it("provides 'true' and 'false' suggestions when autocompleting boolean attributes", () => {
+    editor.setText('<html contenteditable=""')
+    editor.setCursorBufferPosition([0, 23])
+
+    const completions = getCompletions()
+    expect(completions.length).toBe(2)
+    expect(completions[0].text).toBe('true')
+    expect(completions[1].text).toBe('false')
+  })
+
+  it('does not attempt to autocomplete values before the beginning of a string', () => {
+    editor.setText('<button type=""')
+    editor.setCursorBufferPosition([0, 13])
+
+    let completions = []
+    expect(() => completions = getCompletions()).not.toThrow()
+    expect(completions.length).toBe(0)
+  })
+
+  it('does not attempt to autocomplete values after the end of a string', () => {
+    editor.setText('<button type=""')
+    editor.setCursorBufferPosition([0, 15])
+
+    let completions = []
+    expect(() => completions = getCompletions()).not.toThrow()
+    expect(completions.length).toBe(0)
+  })
+
+  it('does not throw when quotes are in the attribute value', () => {
+    editor.setText('<button type="\'"')
+    editor.setCursorBufferPosition([0, 15])
+
+    expect(() => getCompletions()).not.toThrow()
+  })
+
+  it("does not autocomplete attribute values if there isn't a corresponding attribute", () => {
+    editor.setText('<button type="""')
+    editor.setCursorBufferPosition([0, 16])
+
+    let completions = []
+    expect(() => completions = getCompletions()).not.toThrow()
+    expect(completions.length).toBe(0)
+  })
+
+  it('does not throw when attempting to autocomplete values for nonexistent attributes', () => {
+    editor.setText('<button typ=""')
+    editor.setCursorBufferPosition([0, 13])
+
+    let completions = []
+    expect(() => completions = getCompletions()).not.toThrow()
+    expect(completions.length).toBe(0)
+  })
+
+  it('triggers autocomplete when an attibute has been inserted', () => {
+    spyOn(atom.commands, 'dispatch')
+    const suggestion = {type: 'attribute', text: 'whatever'}
+    provider.onDidInsertSuggestion({editor, suggestion})
+
+    advanceClock(1)
+    expect(atom.commands.dispatch).toHaveBeenCalled()
+
+    const { args } = atom.commands.dispatch.mostRecentCall
+    expect(args[0].tagName.toLowerCase()).toBe('atom-text-editor')
+    expect(args[1]).toBe('autocomplete-plus:activate')
+  })
+
+  it('does not error in EJS documents', () => {
+    waitsForPromise(async () => {
+      await atom.workspace.open('test.html.ejs')
+      editor = atom.workspace.getActiveTextEditor()
+      editor.setText('<span><% a = ""; %></span>')
+    })
+
+    waitsForPromise(() => {
+      return atom.packages.activatePackage('language-javascript')
+    })
+
+    runs(() => {
+      editor.setCursorBufferPosition([0, editor.getText().indexOf('""') + 1])
+      expect(() => getCompletions()).not.toThrow()
+    })
+  })
+})
diff --git a/packages/autocomplete-html/update.js b/packages/autocomplete-html/update.js
new file mode 100644
index 000000000..05e94622b
--- /dev/null
+++ b/packages/autocomplete-html/update.js
@@ -0,0 +1,73 @@
+const path = require('path')
+const fs = require('fs')
+const request = require('request')
+const fetchTagDescriptions = require('./fetch-tag-docs')
+const fetchGlobalAttributeDescriptions = require('./fetch-global-attribute-docs')
+
+const TagsURL = 'https://raw.githubusercontent.com/adobe/brackets/master/src/extensions/default/HTMLCodeHints/HtmlTags.json'
+const AttributesURL = 'https://raw.githubusercontent.com/adobe/brackets/master/src/extensions/default/HTMLCodeHints/HtmlAttributes.json'
+
+const tagsPromise = new Promise((resolve) => {
+  request({json: true, url: TagsURL}, (error, response, tags) => {
+    if (error != null) {
+      console.error(error.message)
+      resolve(null)
+    }
+
+    if (response.statusCode !== 200) {
+      console.error(`Request for HtmlTags.json failed: ${response.statusCode}`)
+      resolve(null)
+    }
+
+    for (let tag in tags) {
+      const options = tags[tag]
+      if ((options.attributes != null ? options.attributes.length : undefined) === 0) { delete options.attributes }
+    }
+
+    resolve(tags)
+  })
+})
+
+const tagDescriptionsPromise = fetchTagDescriptions()
+
+const attributesPromise = new Promise((resolve) => {
+  return request({json: true, url: AttributesURL}, (error, response, attributes) => {
+    if (error != null) {
+      console.error(error.message)
+      resolve(null)
+    }
+
+    if (response.statusCode !== 200) {
+      console.error(`Request for HtmlAttributes.json failed: ${response.statusCode}`)
+      resolve(null)
+    }
+
+    for (let attribute in attributes) {
+      const options = attributes[attribute]
+      if ((options.attribOption != null ? options.attribOption.length : undefined) === 0) { delete options.attribOption }
+    }
+
+    resolve(attributes)
+  })
+})
+
+const globalAttributeDescriptionsPromise = fetchGlobalAttributeDescriptions()
+
+Promise.all([tagsPromise, tagDescriptionsPromise, attributesPromise, globalAttributeDescriptionsPromise]).then((values) => {
+  const tags = values[0]
+  const tagDescriptions = values[1]
+  const attributes = values[2]
+  const attributeDescriptions = values[3]
+
+  for (let tag in tags) {
+    tags[tag].description = tagDescriptions[tag]
+  }
+
+  for (let attribute in attributes) {
+    const options = attributes[attribute]
+    if (options.global) { attributes[attribute].description = attributeDescriptions[attribute] }
+  }
+
+  const completions = {tags, attributes}
+  fs.writeFileSync(path.join(__dirname, 'completions.json'), `${JSON.stringify(completions, null, '  ')}\n`)
+})
diff --git a/packages/autocomplete-plus/.coffeelintignore b/packages/autocomplete-plus/.coffeelintignore
new file mode 100644
index 000000000..1db51fed7
--- /dev/null
+++ b/packages/autocomplete-plus/.coffeelintignore
@@ -0,0 +1 @@
+spec/fixtures
diff --git a/packages/autocomplete-plus/.gitignore b/packages/autocomplete-plus/.gitignore
new file mode 100644
index 000000000..825fc67c2
--- /dev/null
+++ b/packages/autocomplete-plus/.gitignore
@@ -0,0 +1,3 @@
+node_modules
+.DS_Store
+npm-debug.log
diff --git a/packages/autocomplete-plus/.pairs b/packages/autocomplete-plus/.pairs
new file mode 100644
index 000000000..91845b111
--- /dev/null
+++ b/packages/autocomplete-plus/.pairs
@@ -0,0 +1,16 @@
+pairs:
+  ns: Nathan Sobo; nathan
+  cj: Corey Johnson; cj
+  dg: David Graham; dgraham
+  ks: Kevin Sawicki; kevin
+  jc: Jerry Cheung; jerry
+  bl: Brian Lopez; brian
+  jp: Justin Palmer; justin
+  gt: Garen Torikian; garen
+  mc: Matt Colyer; mcolyer
+  bo: Ben Ogle; benogle
+  jr: Jason Rudolph; jasonrudolph
+  jl: Jessica Lord; jlord
+email:
+  domain: github.com
+#global: true
diff --git a/packages/autocomplete-plus/README.md b/packages/autocomplete-plus/README.md
new file mode 100644
index 000000000..ad17e3746
--- /dev/null
+++ b/packages/autocomplete-plus/README.md
@@ -0,0 +1,109 @@
+# Autocomplete+ package
+
+Displays possible autocomplete suggestions on keystroke (or manually by typing `ctrl-space`) and inserts a suggestion in the editor if confirmed.
+
+![autocomplete+](https://cloud.githubusercontent.com/assets/744740/7656861/9fb8bcc4-faea-11e4-9814-9dca218ded93.png)
+
+[Changelog](https://github.com/atom/autocomplete-plus/releases)
+
+## Installation
+
+`autocomplete+` is bundled with Pulsar. You don't have to do anything to install it.
+
+## Providers
+
+`autocomplete+` has a powerful autocomplete provider API, allowing provider authors to add language-specific behavior to this package.
+
+You should *definitely* install additional providers (the default provider bundled with this package is somewhat crude): https://github.com/atom/autocomplete-plus/wiki/Autocomplete-Providers
+
+## Usage
+
+Just type some stuff, and autocomplete+ will automatically show you some suggestions.
+Press `UP` and `DOWN` to select another suggestion, press `TAB` or `ENTER` to confirm your selection. You can change the default keymap in `Preferences`:
+
+* Keymap For Confirming A Suggestion
+
+Additionally, the confirm keymap can be customized in your keymap.cson:
+
+```coffeescript
+'atom-text-editor.autocomplete-active':
+  'tab': 'unset!'
+  'ctrl-shift-a': 'autocomplete-plus:confirm'
+```
+
+If setting custom keybindings, use the `none` setting for the confirmation keymap. All this option does is not set any other keybindings. This allows the `TAB` and `ENTER` keys to be used like normal, without side effects.
+
+### Remapping Movement Commands
+
+By default, autocomplete-plus commandeers the editor's core movement commands when the suggestion list is open. You may want to change these movement commands to use your own keybindings.
+
+First you need to set the `autocomplete-plus.useCoreMovementCommands` setting to `false`, which you can do from the `autocomplete-plus` settings in the settings view.
+
+![core-movement](https://cloud.githubusercontent.com/assets/69169/8839134/72a9c7e6-3087-11e5-9d1f-8d3d15961327.jpg)
+
+Or by adding this to your config file:
+
+```coffee
+"*":
+  "autocomplete-plus":
+    "useCoreMovementCommands": false
+```
+
+Then add these to your keymap file:
+
+```coffeescript
+'body atom-text-editor.autocomplete-active':
+  'ctrl-p': 'autocomplete-plus:move-up'
+  'ctrl-n': 'autocomplete-plus:move-down'
+  'pageup': 'autocomplete-plus:page-up'
+  'pagedown': 'autocomplete-plus:page-down'
+  'home': 'autocomplete-plus:move-to-top'
+  'end': 'autocomplete-plus:move-to-bottom'
+```
+
+## Features
+
+* Shows suggestions while typing
+* Includes a default provider (`SymbolProvider`):
+  * Wordlist generation happens when you open a file, while editing the file, and on save
+  * Suggestions are calculated using `fuzzaldrin`
+* Exposes a provider API which can be used to extend the functionality of the package and provide targeted / contextually correct suggestions
+* Disable autocomplete for file(s) via blacklisting, e.g. `*.md` to blacklist Markdown files
+* Disable autocomplete for editor scope(s) via blacklisting
+* Expands a snippet if an autocomplete+ provider includes one in a suggestion
+* Allows external editors to register for autocompletions
+
+## Provider API
+
+Great autocomplete depends on having great autocomplete providers. If there is not already a great provider for the language / grammar that you are working in, please consider creating a provider.
+
+[Read the `Provider API` documentation](https://github.com/atom/autocomplete-plus/wiki/Provider-API) to learn how to create a new autocomplete provider.
+
+## `SymbolProvider` Configuration
+
+If the default `SymbolProvider` is missing useful information for the language / grammar you're working with, please take a look at the [`SymbolProvider` Config API](https://github.com/atom/autocomplete-plus/wiki/SymbolProvider-Config-API).
+
+## The `watchEditor` API
+
+The `watchEditor` method on the `AutocompleteManager` object is exposed as a [provided service](http://flight-manual.atom.io/behind-atom/sections/interacting-with-other-packages-via-services/), named `autocomplete.watchEditor`. The method allows external editors to register for autocompletions from providers with a given set of labels. Disposing the returned object will undo this request. External packages can access this service with the following code.
+
+In `package.json`:
+```
+{
+  "consumedServices": {
+    "autocomplete.watchEditor": {
+      "versions": {
+        "1.0.0": "consumeAutocompleteWatchEditor"
+      }
+    }
+  }
+}
+```
+In the main module file:
+```
+consumeAutocompleteWatchEditor(watchEditor) {
+  this.autocompleteDisposable = watchEditor(
+    this.editor, ['symbol-provider']
+  )
+}
+```
diff --git a/packages/autocomplete-plus/coffeelint.json b/packages/autocomplete-plus/coffeelint.json
new file mode 100644
index 000000000..a5dd715e3
--- /dev/null
+++ b/packages/autocomplete-plus/coffeelint.json
@@ -0,0 +1,37 @@
+{
+  "max_line_length": {
+    "level": "ignore"
+  },
+  "no_empty_param_list": {
+    "level": "error"
+  },
+  "arrow_spacing": {
+    "level": "error"
+  },
+  "no_interpolation_in_single_quotes": {
+    "level": "error"
+  },
+  "no_debugger": {
+    "level": "error"
+  },
+  "prefer_english_operator": {
+    "level": "error"
+  },
+  "colon_assignment_spacing": {
+    "spacing": {
+      "left": 0,
+      "right": 1
+    },
+    "level": "error"
+  },
+  "braces_spacing": {
+    "spaces": 0,
+    "level": "error"
+  },
+  "spacing_after_comma": {
+    "level": "error"
+  },
+  "no_stand_alone_at": {
+    "level": "error"
+  }
+}
diff --git a/packages/autocomplete-plus/keymaps/autocomplete-plus.cson b/packages/autocomplete-plus/keymaps/autocomplete-plus.cson
new file mode 100644
index 000000000..76cf9c205
--- /dev/null
+++ b/packages/autocomplete-plus/keymaps/autocomplete-plus.cson
@@ -0,0 +1,6 @@
+'atom-text-editor':
+  'ctrl-space': 'autocomplete-plus:activate'
+
+'atom-text-editor.autocomplete-active':
+  'escape': 'autocomplete-plus:cancel'
+  'f1': 'autocomplete-plus:navigate-to-description-more-link'
diff --git a/packages/autocomplete-plus/lib/autocomplete-manager.js b/packages/autocomplete-plus/lib/autocomplete-manager.js
new file mode 100644
index 000000000..9876d00c0
--- /dev/null
+++ b/packages/autocomplete-plus/lib/autocomplete-manager.js
@@ -0,0 +1,799 @@
+const {CompositeDisposable, Disposable, Point, Range} = require('atom')
+const path = require('path')
+const fuzzaldrin = require('fuzzaldrin')
+const fuzzaldrinPlus = require('fuzzaldrin-plus')
+
+const ProviderManager = require('./provider-manager')
+const SuggestionList = require('./suggestion-list')
+const {UnicodeLetters} = require('./unicode-helpers')
+const getAdditionalWordCharacters = require('./get-additional-word-characters')
+
+const MAX_LEGACY_PREFIX_LENGTH = 80
+const wordCharacterRegexCache = new Map()
+
+// Deferred requires
+let minimatch = null
+let grim = null
+
+module.exports =
+class AutocompleteManager {
+  constructor () {
+    this.autosaveEnabled = false
+    this.backspaceTriggersAutocomplete = true
+    this.autoConfirmSingleSuggestionEnabled = true
+    this.bracketMatcherPairs = ['()', '[]', '{}', '""', "''", '``', '“”', '‘’', '«»', '‹›']
+    this.buffer = null
+    this.compositionInProgress = false
+    this.disposed = false
+    this.editor = null
+    this.editorLabels = null
+    this.editorSubscriptions = null
+    this.editorView = null
+    this.providerManager = null
+    this.ready = false
+    this.subscriptions = null
+    this.suggestionList = null
+    this.suppressForClasses = []
+    this.shouldDisplaySuggestions = false
+    this.prefixRegex = null
+    this.wordPrefixRegex = null
+    this.updateCurrentEditor = this.updateCurrentEditor.bind(this)
+    this.handleCommands = this.handleCommands.bind(this)
+    this.findSuggestions = this.findSuggestions.bind(this)
+    this.getSuggestionsFromProviders = this.getSuggestionsFromProviders.bind(this)
+    this.displaySuggestions = this.displaySuggestions.bind(this)
+    this.hideSuggestionList = this.hideSuggestionList.bind(this)
+
+    this.showOrHideSuggestionListForBufferChanges = this.showOrHideSuggestionListForBufferChanges.bind(this)
+    this.providerManager = new ProviderManager()
+    this.suggestionList = new SuggestionList()
+    this.watchedEditors = new WeakSet()
+  }
+
+  initialize () {
+    this.subscriptions = new CompositeDisposable()
+
+    this.providerManager.initialize()
+    this.suggestionList.initialize()
+
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.enableExtendedUnicodeSupport', enableExtendedUnicodeSupport => {
+      if (enableExtendedUnicodeSupport) {
+        this.prefixRegex = new RegExp(`(['"~\`!@#\\$%^&*\\(\\)\\{\\}\\[\\]=+,/\\?>])?(([${UnicodeLetters}\\d_]+[${UnicodeLetters}\\d_-]*)|([.:;[{(< ]+))$`)
+        this.wordPrefixRegex = new RegExp(`^[${UnicodeLetters}\\d_]+[${UnicodeLetters}\\d_-]*$`)
+      } else {
+        this.prefixRegex = /(\b|['"~`!@#$%^&*(){}[\]=+,/?>])((\w+[\w-]*)|([.:;[{(< ]+))$/
+        this.wordPrefixRegex = /^\w+[\w-]*$/
+      }
+    }
+    ))
+    this.subscriptions.add(this.providerManager)
+    this.handleEvents()
+    this.handleCommands()
+    this.subscriptions.add(this.suggestionList) // We're adding this last so it is disposed after events
+    this.ready = true
+  }
+
+  setSnippetsManager (snippetsManager) {
+    this.snippetsManager = snippetsManager
+  }
+
+  updateCurrentEditor (currentEditor, labels) {
+    if (currentEditor === this.editor) { return }
+    if (this.editorSubscriptions) {
+      this.editorSubscriptions.dispose()
+    }
+    this.editorSubscriptions = null
+
+    // Stop tracking editor + buffer
+    this.editor = null
+    this.editorView = null
+    this.buffer = null
+    this.isCurrentFileBlackListedCache = null
+
+    if (!this.editorIsValid(currentEditor)) { return }
+
+    // Track the new editor, editorView, and buffer and set
+    // the labels for its providers.
+    this.editor = currentEditor
+    this.editorLabels = labels
+    this.editorView = atom.views.getView(this.editor)
+    this.buffer = this.editor.getBuffer()
+
+    this.editorSubscriptions = new CompositeDisposable()
+
+    // Subscribe to buffer events:
+    this.editorSubscriptions.add(this.buffer.onDidSave((e) => { this.bufferSaved(e) }))
+    this.editorSubscriptions.add(this.buffer.onDidChangeText(this.showOrHideSuggestionListForBufferChanges))
+
+    // Watch IME Events To Allow IME To Function Without The Suggestion List Showing
+    const compositionStart = () => {
+      this.compositionInProgress = true
+    }
+    const compositionEnd = () => {
+      this.compositionInProgress = false
+    }
+
+    this.editorView.addEventListener('compositionstart', compositionStart)
+    this.editorView.addEventListener('compositionend', compositionEnd)
+    this.editorSubscriptions.add(new Disposable(() => {
+      if (this.editorView) {
+        this.editorView.removeEventListener('compositionstart', compositionStart)
+        this.editorView.removeEventListener('compositionend', compositionEnd)
+      }
+    }))
+
+    // Subscribe to editor events:
+    // Close the overlay when the cursor moved without changing any text
+    this.editorSubscriptions.add(this.editor.onDidChangeCursorPosition((e) => { this.cursorMoved(e) }))
+    return this.editorSubscriptions.add(this.editor.onDidChangePath(() => {
+      this.isCurrentFileBlackListedCache = null
+    }))
+  }
+
+  editorIsValid (editor) {
+    // TODO: remove conditional when `isTextEditor` is shipped.
+    if (typeof atom.workspace.isTextEditor === 'function') {
+      return atom.workspace.isTextEditor(editor)
+    } else {
+      if (!editor) { return false }
+      // Should we disqualify TextEditors with the Grammar text.plain.null-grammar?
+      return (editor.getText != null)
+    }
+  }
+
+  // Makes the autocomplete manager watch the `editor`.
+  // When the watched `editor` is focused, it will provide autocompletions from
+  // providers with the given `labels`.
+  //
+  // Returns a {Disposable} to stop watching the `editor`.
+  watchEditor (editor, labels) {
+    if (this.watchedEditors.has(editor)) return
+
+    let view = atom.views.getView(editor)
+
+    if (view.hasFocus()) {
+      this.updateCurrentEditor(editor, labels)
+    }
+
+    let focusListener = (element) => this.updateCurrentEditor(editor, labels)
+    view.addEventListener('focus', focusListener)
+    let blurListener = (element) => this.hideSuggestionList()
+    view.addEventListener('blur', blurListener)
+
+    let disposable = new Disposable(() => {
+      view.removeEventListener('focus', focusListener)
+      view.removeEventListener('blur', blurListener)
+      if (this.editor === editor) {
+        this.updateCurrentEditor(null)
+      }
+    })
+    this.watchedEditors.add(editor)
+    this.subscriptions.add(disposable)
+    return new Disposable(() => {
+      disposable.dispose()
+      if (this.subscriptions != null) {
+        this.subscriptions.remove(disposable)
+      }
+      this.watchedEditors.delete(editor)
+    })
+  }
+
+  handleEvents () {
+    this.subscriptions.add(atom.workspace.observeTextEditors((editor) => {
+      const disposable = this.watchEditor(editor, ['workspace-center'])
+      editor.onDidDestroy(() => disposable.dispose())
+    }))
+
+    // Watch config values
+    this.subscriptions.add(atom.config.observe('autosave.enabled', (value) => { this.autosaveEnabled = value }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.backspaceTriggersAutocomplete', (value) => { this.backspaceTriggersAutocomplete = value }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.enableAutoActivation', (value) => { this.autoActivationEnabled = value }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.enableAutoConfirmSingleSuggestion', (value) => { this.autoConfirmSingleSuggestionEnabled = value }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.consumeSuffix', (value) => { this.consumeSuffix = value }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.useAlternateScoring', (value) => { this.useAlternateScoring = value }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.fileBlacklist', (value) => {
+      if (value) {
+        this.fileBlacklist = value.map((s) => { return s.trim() })
+      }
+      this.isCurrentFileBlackListedCache = null
+    }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.suppressActivationForEditorClasses', value => {
+      this.suppressForClasses = []
+      for (let i = 0; i < value.length; i++) {
+        const selector = value[i]
+        const classes = (selector.trim().split('.').filter((className) => className.trim()).map((className) => className.trim()))
+        if (classes.length) { this.suppressForClasses.push(classes) }
+      }
+    }))
+
+    // Handle events from suggestion list
+    this.subscriptions.add(this.suggestionList.onDidConfirm((e) => { this.confirm(e) }))
+    this.subscriptions.add(this.suggestionList.onDidCancel(this.hideSuggestionList))
+    this.subscriptions.add(this.suggestionList.onDidSelect(suggestion => { this.getDetailsOnSelect(suggestion) }))
+  }
+
+  handleCommands () {
+    return this.subscriptions.add(atom.commands.add('atom-text-editor', {
+      'autocomplete-plus:activate': (event) => {
+        this.shouldDisplaySuggestions = true
+        let activatedManually = true
+        if (event.detail && event.detail.activatedManually !== null && typeof event.detail.activatedManually !== 'undefined') {
+          activatedManually = event.detail.activatedManually
+        }
+        this.findSuggestions(activatedManually)
+      },
+      'autocomplete-plus:navigate-to-description-more-link': () => {
+        let suggestionListView = atom.views.getView(this.editor)
+        let descriptionContainer = suggestionListView.querySelector('.suggestion-description')
+        if (descriptionContainer !== null && descriptionContainer.style.display === 'block') {
+          let descriptionMoreLink = descriptionContainer.querySelector('.suggestion-description-more-link')
+          require('electron').shell.openExternal(descriptionMoreLink.href)
+        }
+      }
+    }))
+  }
+
+  // Private: Finds suggestions for the current prefix, sets the list items,
+  // positions the overlay and shows it
+  findSuggestions (activatedManually) {
+    if (this.disposed) { return }
+    if ((this.providerManager == null) || (this.editor == null) || (this.buffer == null)) { return }
+    if (this.isCurrentFileBlackListed()) { return }
+    const cursor = this.editor.getLastCursor()
+    if (cursor == null) { return }
+
+    const bufferPosition = cursor.getBufferPosition()
+    const scopeDescriptor = cursor.getScopeDescriptor()
+    const prefix = this.getPrefix(this.editor, bufferPosition, scopeDescriptor) // Passed to providers with API version >= 4.0.0
+    const legacyPrefix = this.getLegacyPrefix(this.editor, bufferPosition) // Passed to providers with API version < 4.0.0
+
+    return this.getSuggestionsFromProviders({editor: this.editor, bufferPosition, scopeDescriptor, prefix, legacyPrefix, activatedManually})
+  }
+
+  getSuggestionsFromProviders (options) {
+    let suggestionsPromise
+    const providers = this.providerManager.applicableProviders(this.editorLabels, options.scopeDescriptor)
+
+    const providerPromises = []
+    providers.forEach(provider => {
+      const apiVersion = this.providerManager.apiVersionForProvider(provider)
+
+      let getSuggestions
+      let upgradedOptions
+
+      if (apiVersion === 1) {
+        getSuggestions = provider.requestHandler.bind(provider)
+        upgradedOptions = {
+          editor: options.editor,
+          prefix: options.prefix,
+          bufferPosition: options.bufferPosition,
+          position: options.bufferPosition,
+          scope: options.scopeDescriptor,
+          scopeChain: options.scopeDescriptor.getScopeChain(),
+          buffer: options.editor.getBuffer(),
+          cursor: options.editor.getLastCursor()
+        }
+      } else {
+        getSuggestions = provider.getSuggestions.bind(provider)
+        if (apiVersion < 4) {
+          upgradedOptions = Object.assign({}, options)
+          upgradedOptions.prefix = options.legacyPrefix
+        } else {
+          upgradedOptions = Object.assign({}, options)
+          delete upgradedOptions.legacyPrefix
+        }
+      }
+
+      return providerPromises.push(Promise.resolve(getSuggestions(upgradedOptions)).then(providerSuggestions => {
+        if (providerSuggestions == null) { return }
+
+        // TODO API: remove upgrading when 1.0 support is removed
+        let hasDeprecations = false
+        if (apiVersion > 1 && providerSuggestions.length) {
+          hasDeprecations = this.deprecateForSuggestion(provider, providerSuggestions[0])
+        }
+
+        if (hasDeprecations || apiVersion === 1) {
+          providerSuggestions = providerSuggestions.map((suggestion) => {
+            const newSuggestion = {
+              text: suggestion.text != null ? suggestion.text : suggestion.word,
+              snippet: suggestion.snippet,
+              replacementPrefix: suggestion.replacementPrefix != null ? suggestion.replacementPrefix : suggestion.prefix,
+              className: suggestion.className,
+              type: suggestion.type
+            }
+            if ((newSuggestion.rightLabelHTML == null) && suggestion.renderLabelAsHtml) { newSuggestion.rightLabelHTML = suggestion.label }
+            if ((newSuggestion.rightLabel == null) && !suggestion.renderLabelAsHtml) { newSuggestion.rightLabel = suggestion.label }
+            return newSuggestion
+          })
+        }
+
+        let hasEmpty = false // Optimization: only create another array when there are empty items
+        for (let i = 0; i < providerSuggestions.length; i++) {
+          const suggestion = providerSuggestions[i]
+          if (!suggestion.snippet && !suggestion.text) { hasEmpty = true }
+          // Suggestions are mutable and are updated with a new replacement prefix. In order to
+          // distinguish between suggestion that had original prefix and assigned one, we use
+          // `isPrefixModified` flag. If it is `true`, we reset replacement prefix.
+          if (suggestion.replacementPrefix == null || !!suggestion.isPrefixModified) {
+            if (apiVersion < 4) {
+              suggestion.replacementPrefix = this.wordPrefixRegex.test(options.prefix) ? options.prefix : ''
+            } else {
+              suggestion.replacementPrefix = options.prefix
+            }
+            suggestion.isPrefixModified = true
+          }
+          suggestion.provider = provider
+        }
+
+        if (hasEmpty) {
+          const res = []
+          for (const s of providerSuggestions) {
+            if (s.snippet || s.text) {
+              res.push(s)
+            }
+          }
+          providerSuggestions = res
+        }
+
+        if (provider.filterSuggestions) {
+          providerSuggestions = this.filterSuggestions(providerSuggestions, options)
+        }
+        return providerSuggestions
+      }))
+    })
+
+    if (!providerPromises || !providerPromises.length) {
+      return
+    }
+
+    suggestionsPromise = Promise.all(providerPromises)
+    this.currentSuggestionsPromise = suggestionsPromise
+    return this.currentSuggestionsPromise
+      .then(this.mergeSuggestionsFromProviders)
+      .then(suggestions => {
+        if (this.currentSuggestionsPromise !== suggestionsPromise) { return }
+        if (options.activatedManually && this.shouldDisplaySuggestions && this.autoConfirmSingleSuggestionEnabled && suggestions.length === 1) {
+          // When there is one suggestion in manual mode, just confirm it
+          return this.confirm(suggestions[0])
+        } else {
+          return this.displaySuggestions(suggestions, options)
+        }
+      }
+    )
+  }
+
+  filterSuggestions (suggestions, {prefix}) {
+    const results = []
+    const fuzzaldrinProvider = this.useAlternateScoring ? fuzzaldrinPlus : fuzzaldrin
+    for (let i = 0; i < suggestions.length; i++) {
+      // sortScore mostly preserves in the original sorting. The function is
+      // chosen such that suggestions with a very high match score can break out.
+      let score
+      const suggestion = suggestions[i]
+      suggestion.sortScore = Math.max((-i / 10) + 3, 0) + 1
+      suggestion.score = null
+
+      const text = (suggestion.snippet || suggestion.text)
+      const suggestionPrefix = suggestion.replacementPrefix != null ? suggestion.replacementPrefix : prefix
+      const prefixIsEmpty = !suggestionPrefix || suggestionPrefix === ' '
+      const firstCharIsMatch = !prefixIsEmpty && suggestionPrefix[0].toLowerCase() === text[0].toLowerCase()
+
+      if (prefixIsEmpty) {
+        results.push(suggestion)
+      }
+      if (firstCharIsMatch && (score = fuzzaldrinProvider.score(text, suggestionPrefix)) > 0) {
+        suggestion.score = score * suggestion.sortScore
+        results.push(suggestion)
+      }
+    }
+
+    results.sort(this.reverseSortOnScoreComparator)
+    return results
+  }
+
+  reverseSortOnScoreComparator (a, b) {
+    let bscore = b.score
+    if (!bscore) {
+      bscore = b.sortScore
+    }
+    let ascore = a.score
+    if (!ascore) {
+      ascore = b.sortScore
+    }
+    return bscore - ascore
+  }
+
+  // providerSuggestions - array of arrays of suggestions provided by all called providers
+  mergeSuggestionsFromProviders (providerSuggestions) {
+    return providerSuggestions.reduce((suggestions, providerSuggestions) => {
+      if (providerSuggestions && providerSuggestions.length) {
+        suggestions = suggestions.concat(providerSuggestions)
+      }
+
+      return suggestions
+    }, [])
+  }
+
+  deprecateForSuggestion (provider, suggestion) {
+    let hasDeprecations = false
+    if (suggestion.word != null) {
+      hasDeprecations = true
+      if (typeof grim === 'undefined' || grim === null) { grim = require('grim') }
+      grim.deprecate(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+returns suggestions with a \`word\` attribute.
+The \`word\` attribute is now \`text\`.
+See https://github.com/atom/autocomplete-plus/wiki/Provider-API`
+      )
+    }
+    if (suggestion.prefix != null) {
+      hasDeprecations = true
+      if (typeof grim === 'undefined' || grim === null) { grim = require('grim') }
+      grim.deprecate(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+returns suggestions with a \`prefix\` attribute.
+The \`prefix\` attribute is now \`replacementPrefix\` and is optional.
+See https://github.com/atom/autocomplete-plus/wiki/Provider-API`
+      )
+    }
+    if (suggestion.label != null) {
+      hasDeprecations = true
+      if (typeof grim === 'undefined' || grim === null) { grim = require('grim') }
+      grim.deprecate(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+returns suggestions with a \`label\` attribute.
+The \`label\` attribute is now \`rightLabel\` or \`rightLabelHTML\`.
+See https://github.com/atom/autocomplete-plus/wiki/Provider-API`
+      )
+    }
+    if (suggestion.onWillConfirm != null) {
+      hasDeprecations = true
+      if (typeof grim === 'undefined' || grim === null) { grim = require('grim') }
+      grim.deprecate(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+returns suggestions with a \`onWillConfirm\` callback.
+The \`onWillConfirm\` callback is no longer supported.
+See https://github.com/atom/autocomplete-plus/wiki/Provider-API`
+      )
+    }
+    if (suggestion.onDidConfirm != null) {
+      hasDeprecations = true
+      if (typeof grim === 'undefined' || grim === null) { grim = require('grim') }
+      grim.deprecate(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+returns suggestions with a \`onDidConfirm\` callback.
+The \`onDidConfirm\` callback is now a \`onDidInsertSuggestion\` callback on the provider itself.
+See https://github.com/atom/autocomplete-plus/wiki/Provider-API`
+      )
+    }
+    return hasDeprecations
+  }
+
+  displaySuggestions (suggestions, options) {
+    switch (atom.config.get('autocomplete-plus.similarSuggestionRemoval')) {
+      case 'textOrSnippet': {
+        suggestions = this.getUniqueSuggestions(suggestions, (suggestion) => suggestion.text + suggestion.snippet)
+        break
+      }
+    }
+
+    if (this.shouldDisplaySuggestions && suggestions.length) {
+      return this.showSuggestionList(suggestions, options)
+    } else {
+      return this.hideSuggestionList()
+    }
+  }
+
+  getUniqueSuggestions (suggestions, uniqueKeyFunction) {
+    const seen = {}
+    const result = []
+    for (let i = 0; i < suggestions.length; i++) {
+      const suggestion = suggestions[i]
+      const val = uniqueKeyFunction(suggestion)
+      if (!seen[val]) {
+        result.push(suggestion)
+        seen[val] = true
+      }
+    }
+    return result
+  }
+
+  getPrefix (editor, position, scopeDescriptor) {
+    const wordCharacterRegex = this.getWordCharacterRegex(scopeDescriptor)
+    const line = editor.getBuffer().getTextInRange([[position.row, 0], position])
+
+    let startColumn = position.column
+    while (startColumn > 0) {
+      let prevChar = line[startColumn - 1]
+      if (wordCharacterRegex.test(prevChar)) {
+        startColumn--
+      } else {
+        break
+      }
+    }
+    return line.slice(startColumn)
+  }
+
+  getWordCharacterRegex (scopeDescriptor) {
+    const additionalWordChars = getAdditionalWordCharacters(scopeDescriptor)
+    let regex = wordCharacterRegexCache.get(additionalWordChars)
+
+    if (!regex) {
+      regex = new RegExp(`[${UnicodeLetters}${additionalWordChars.replace(']', '\\]')}\\d]`)
+      wordCharacterRegexCache.set(additionalWordChars, regex)
+    }
+    return regex
+  }
+
+  getLegacyPrefix (editor, bufferPosition) {
+    const {row, column} = bufferPosition
+    const line = editor.getTextInRange(new Range(
+      new Point(row, Math.max(0, column - MAX_LEGACY_PREFIX_LENGTH)),
+      bufferPosition
+    ))
+    const prefix = this.prefixRegex.exec(line)
+    if (!prefix || !prefix[2] || prefix[2].length === MAX_LEGACY_PREFIX_LENGTH) return ''
+    return prefix[2]
+  }
+
+  // Private: Gets called when the user successfully confirms a suggestion
+  //
+  // match - An {Object} representing the confirmed suggestion
+  confirm (suggestion) {
+    if ((this.editor == null) || (suggestion == null) || !!this.disposed) { return }
+
+    const apiVersion = this.providerManager.apiVersionForProvider(suggestion.provider)
+    const triggerPosition = this.editor.getLastCursor().getBufferPosition()
+
+    // TODO API: Remove as this is no longer used
+    if (suggestion.onWillConfirm) {
+      suggestion.onWillConfirm()
+    }
+
+    const selections = this.editor.getSelections()
+    if (selections && selections.length) {
+      for (const s of selections) {
+        if (s && s.clear) {
+          s.clear()
+        }
+      }
+    }
+
+    this.hideSuggestionList()
+
+    this.replaceTextWithMatch(suggestion)
+
+    if (apiVersion > 1) {
+      if (suggestion.provider && suggestion.provider.onDidInsertSuggestion) {
+        suggestion.provider.onDidInsertSuggestion({editor: this.editor, suggestion, triggerPosition})
+      }
+    } else {
+      if (suggestion.onDidConfirm) {
+        suggestion.onDidConfirm()
+      }
+    }
+  }
+
+  getDetailsOnSelect (suggestion) {
+    if (suggestion != null && suggestion.provider && suggestion.provider.getSuggestionDetailsOnSelect) {
+      Promise.resolve(suggestion.provider.getSuggestionDetailsOnSelect(suggestion))
+        .then(detailedSuggestion => {
+          this.suggestionList.replaceItem(suggestion, detailedSuggestion)
+        })
+    }
+  }
+
+  showSuggestionList (suggestions, options) {
+    if (this.disposed) { return }
+    this.suggestionList.changeItems(suggestions)
+    return this.suggestionList.show(this.editor, options)
+  }
+
+  hideSuggestionList () {
+    if (this.disposed) { return }
+    this.suggestionList.changeItems(null)
+    this.suggestionList.hide()
+    this.shouldDisplaySuggestions = false
+  }
+
+  requestHideSuggestionList (command) {
+    if (this.hideTimeout == null) {
+      this.hideTimeout = setTimeout(() => {
+        this.hideSuggestionList()
+        this.hideTimeout = null
+      }, 0)
+    }
+    this.shouldDisplaySuggestions = false
+  }
+
+  cancelHideSuggestionListRequest () {
+    clearTimeout(this.hideTimeout)
+    this.hideTimeout = null
+  }
+
+  // Private: Replaces the current prefix with the given match.
+  //
+  // match - The match to replace the current prefix with
+  replaceTextWithMatch (suggestion) {
+    if (this.editor == null) { return }
+
+    const cursors = this.editor.getCursors()
+    if (cursors == null) { return }
+
+    return this.editor.transact(() => {
+      for (let i = 0; i < cursors.length; i++) {
+        const cursor = cursors[i]
+        const endPosition = cursor.getBufferPosition()
+        const beginningPosition = [endPosition.row, endPosition.column - suggestion.replacementPrefix.length]
+
+        if (this.editor.getTextInBufferRange([beginningPosition, endPosition]) === suggestion.replacementPrefix) {
+          const suffix = this.consumeSuffix ? this.getSuffix(this.editor, endPosition, suggestion) : ''
+          if (suffix.length) { cursor.moveRight(suffix.length) }
+          cursor.selection.selectLeft(suggestion.replacementPrefix.length + suffix.length)
+
+          if ((suggestion.snippet != null) && (this.snippetsManager != null)) {
+            this.snippetsManager.insertSnippet(suggestion.snippet, this.editor, cursor)
+          } else {
+            cursor.selection.insertText(suggestion.text != null ? suggestion.text : suggestion.snippet, {
+              autoIndentNewline: this.editor.shouldAutoIndent(),
+              autoDecreaseIndent: this.editor.shouldAutoIndent()
+            })
+          }
+        }
+      }
+    }
+    )
+  }
+
+  getSuffix (editor, bufferPosition, suggestion) {
+    // This just chews through the suggestion and tries to match the suggestion
+    // substring with the lineText starting at the cursor. There is probably a
+    // more efficient way to do this.
+    let suffix = (suggestion.snippet != null ? suggestion.snippet : suggestion.text)
+    const endPosition = [bufferPosition.row, bufferPosition.column + suffix.length]
+    const endOfLineText = editor.getTextInBufferRange([bufferPosition, endPosition])
+    const nonWordCharacters = new Set(atom.config.get('editor.nonWordCharacters').split(''))
+    while (suffix) {
+      if (endOfLineText.startsWith(suffix) && !nonWordCharacters.has(suffix[0])) { break }
+      suffix = suffix.slice(1)
+    }
+    return suffix
+  }
+
+  // Private: Checks whether the current file is blacklisted.
+  //
+  // Returns {Boolean} that defines whether the current file is blacklisted
+  isCurrentFileBlackListed () {
+    // minimatch is slow. Not necessary to do this computation on every request for suggestions
+    let left
+    if (this.isCurrentFileBlackListedCache != null) { return this.isCurrentFileBlackListedCache }
+
+    if ((this.fileBlacklist == null) || this.fileBlacklist.length === 0) {
+      this.isCurrentFileBlackListedCache = false
+      return this.isCurrentFileBlackListedCache
+    }
+
+    if (typeof minimatch === 'undefined' || minimatch === null) { minimatch = require('minimatch') }
+    const fileName = path.basename((left = this.buffer.getPath()) != null ? left : '')
+    for (let i = 0; i < this.fileBlacklist.length; i++) {
+      const blacklistGlob = this.fileBlacklist[i]
+      if (minimatch(fileName, blacklistGlob)) {
+        this.isCurrentFileBlackListedCache = true
+        return this.isCurrentFileBlackListedCache
+      }
+    }
+
+    this.isCurrentFileBlackListedCache = false
+    return this.isCurrentFileBlackListedCache
+  }
+
+  // Private: Gets called when the content has been modified
+  requestNewSuggestions () {
+    let delay = atom.config.get('autocomplete-plus.autoActivationDelay')
+
+    if (this.delayTimeout != null) {
+      clearTimeout(this.delayTimeout)
+    }
+
+    if (delay) {
+      this.delayTimeout = setTimeout(this.findSuggestions, delay)
+    } else {
+      this.findSuggestions()
+    }
+
+    this.shouldDisplaySuggestions = true
+  }
+
+  cancelNewSuggestionsRequest () {
+    if (this.delayTimeout != null) {
+      clearTimeout(this.delayTimeout)
+    }
+    this.shouldDisplaySuggestions = false
+  }
+
+  // Private: Gets called when the cursor has moved. Cancels the autocompletion if
+  // the text has not been changed.
+  //
+  // data - An {Object} containing information on why the cursor has been moved
+  cursorMoved ({textChanged}) {
+    // The delay is a workaround for the backspace case. The way atom implements
+    // backspace is to select left 1 char, then delete. This results in a
+    // cursorMoved event with textChanged == false. So we delay, and if the
+    // bufferChanged handler decides to show suggestions, it will cancel the
+    // hideSuggestionList request. If there is no bufferChanged event,
+    // suggestionList will be hidden.
+    if (!textChanged) this.requestHideSuggestionList()
+  }
+
+  // Private: Gets called when the user saves the document. Cancels the
+  // autocompletion.
+  bufferSaved () {
+    if (!this.autosaveEnabled) { return this.hideSuggestionList() }
+  }
+
+  showOrHideSuggestionListForBufferChanges ({changes}) {
+    if (this.disposed) return
+
+    const lastCursorPosition = this.editor.getLastCursor().getBufferPosition()
+    const changeOccurredNearLastCursor = changes.some(({newRange}) => {
+      return newRange.containsPoint(lastCursorPosition)
+    })
+    if (!changeOccurredNearLastCursor) return
+
+    let shouldActivate = false
+    if (this.autoActivationEnabled || this.suggestionList.isActive() && !this.compositionInProgress) {
+      shouldActivate = changes.some(({oldText, newText}) => {
+        if (this.autoActivationEnabled || this.suggestionList.isActive()) {
+          if (newText.length > 0) {
+            // Activate on space, a non-whitespace character, or a bracket-matcher pair.
+            if (newText === ' ' ||
+                newText.trim().length === 1 ||
+                (newText.length === 2 && this.bracketMatcherPairs.includes(newText))) return true
+          } else if (oldText.length > 0 && (this.backspaceTriggersAutocomplete || this.suggestionList.isActive())) {
+            // Suggestion list must be either active or backspaceTriggersAutocomplete must be true for activation to occur.
+            // Activate on removal of a space, a non-whitespace character, or a bracket-matcher pair.
+            if (oldText === ' ' ||
+                oldText.trim().length === 1 ||
+                (oldText.length === 2 && this.bracketMatcherPairs.includes(oldText))) return true
+          }
+        }
+      })
+
+      if (shouldActivate && this.shouldSuppressActivationForEditorClasses()) shouldActivate = false
+    }
+
+    if (shouldActivate) {
+      this.cancelHideSuggestionListRequest()
+      this.requestNewSuggestions()
+    } else {
+      this.cancelNewSuggestionsRequest()
+      this.hideSuggestionList()
+    }
+  }
+
+  shouldSuppressActivationForEditorClasses () {
+    for (let i = 0; i < this.suppressForClasses.length; i++) {
+      const classNames = this.suppressForClasses[i]
+      let containsCount = 0
+      for (let j = 0; j < classNames.length; j++) {
+        const className = classNames[j]
+        if (this.editorView.classList.contains(className)) { containsCount += 1 }
+      }
+      if (containsCount === classNames.length) { return true }
+    }
+    return false
+  }
+
+  // Public: Clean up, stop listening to events
+  dispose () {
+    this.hideSuggestionList()
+    this.disposed = true
+    this.ready = false
+    if (this.editorSubscriptions) {
+      this.editorSubscriptions.dispose()
+    }
+    this.editorSubscriptions = null
+    if (this.subscriptions) {
+      this.subscriptions.dispose()
+    }
+    this.subscriptions = null
+    this.suggestionList = null
+    this.providerManager = null
+  }
+}
diff --git a/packages/autocomplete-plus/lib/get-additional-word-characters.js b/packages/autocomplete-plus/lib/get-additional-word-characters.js
new file mode 100644
index 000000000..ca2be1cfd
--- /dev/null
+++ b/packages/autocomplete-plus/lib/get-additional-word-characters.js
@@ -0,0 +1,13 @@
+const POSSIBLE_WORD_CHARACTERS = '/\\()"\':,.;<>~!@#$%^&*|+=[]{}`?_-…'.split('')
+
+module.exports =
+function getAdditionalWordCharacters (scopeDescriptor) {
+  const nonWordCharacters = atom.config.get('editor.nonWordCharacters', {scope: scopeDescriptor})
+  let result = atom.config.get('autocomplete-plus.extraWordCharacters', {scope: scopeDescriptor})
+  POSSIBLE_WORD_CHARACTERS.forEach(character => {
+    if (!nonWordCharacters.includes(character)) {
+      result += character
+    }
+  })
+  return result
+}
diff --git a/packages/autocomplete-plus/lib/main.js b/packages/autocomplete-plus/lib/main.js
new file mode 100644
index 000000000..7353e20d5
--- /dev/null
+++ b/packages/autocomplete-plus/lib/main.js
@@ -0,0 +1,88 @@
+const {CompositeDisposable} = require('atom')
+const AutocompleteManager = require('./autocomplete-manager')
+
+module.exports = {
+  subscriptions: null,
+  autocompleteManager: new AutocompleteManager(),
+
+  // Public: Creates AutocompleteManager instances for all active and future editors (soon, just a single AutocompleteManager)
+  activate () {
+    this.subscriptions = new CompositeDisposable()
+    if (!this.autocompleteManager) this.autocompleteManager = new AutocompleteManager()
+    this.subscriptions.add(this.autocompleteManager)
+    this.autocompleteManager.initialize()
+  },
+
+  // Public: Cleans everything up, removes all AutocompleteManager instances
+  deactivate () {
+    if (this.subscriptions) {
+      this.subscriptions.dispose()
+    }
+    this.subscriptions = null
+    this.autocompleteManager = null
+  },
+
+  provideWatchEditor () {
+    return this.autocompleteManager.watchEditor.bind(this.autocompleteManager)
+  },
+
+  consumeSnippets (snippetsManager) {
+    this.autocompleteManager.setSnippetsManager(snippetsManager)
+  },
+
+  /*
+  Section: Provider API
+  */
+
+  // 1.0.0 API
+  // service - {provider: provider1}
+  consumeProvider_1 (service) {
+    if (!service || !service.provider) {
+      return
+    }
+    return this.consumeProvider([service.provider], 1)
+  },
+
+  // 1.1.0 API
+  // service - {providers: [provider1, provider2, ...]}
+  consumeProvider_1_1 (service) {
+    if (!service || !service.providers) {
+      return
+    }
+    return this.consumeProvider(service.providers, 1)
+  },
+
+  // 2.0.0 API
+  consumeProvider_2 (providers) {
+    return this.consumeProvider(providers, 2)
+  },
+
+  // 3.0.0 API
+  consumeProvider_3 (providers) {
+    return this.consumeProvider(providers, 3)
+  },
+
+  // 4.0.0 API – Simplifies prefix computation
+  consumeProvider_4 (providers) {
+    return this.consumeProvider(providers, 4)
+  },
+
+  consumeProvider (providers, apiVersion = 3) {
+    if (!providers) {
+      return
+    }
+    if (providers && !Array.isArray(providers)) {
+      providers = [providers]
+    }
+    if (!providers.length > 0) {
+      return
+    }
+
+    const registrations = new CompositeDisposable()
+    for (let i = 0; i < providers.length; i++) {
+      const provider = providers[i]
+      registrations.add(this.autocompleteManager.providerManager.registerProvider(provider, apiVersion))
+    }
+    return registrations
+  }
+}
diff --git a/packages/autocomplete-plus/lib/private-symbols.js b/packages/autocomplete-plus/lib/private-symbols.js
new file mode 100644
index 000000000..a84f3b3ce
--- /dev/null
+++ b/packages/autocomplete-plus/lib/private-symbols.js
@@ -0,0 +1,4 @@
+'use babel'
+
+const API_VERSION = Symbol('Private property: Semantic version of the service endpoint.')
+export {API_VERSION}
diff --git a/packages/autocomplete-plus/lib/provider-config.js b/packages/autocomplete-plus/lib/provider-config.js
new file mode 100644
index 000000000..e6ed8253f
--- /dev/null
+++ b/packages/autocomplete-plus/lib/provider-config.js
@@ -0,0 +1,164 @@
+const { Selector } = require('selector-kit')
+const {selectorsMatchScopeChain} = require('./scope-helpers')
+
+module.exports =
+class ProviderConfig {
+  constructor (options = {}) {
+    this.atomConfig = options.atomConfig || atom.config
+
+    this.config = {}
+
+    this.scopesToTypeMap = {}
+
+    this.defaultConfig = {
+      class: {
+        selector: '.class.name, .inherited-class, .instance.type',
+        typePriority: 4
+      },
+      function: {
+        selector: '.function.name',
+        typePriority: 3
+      },
+      variable: {
+        selector: '.variable',
+        typePriority: 2
+      },
+      '': {
+        selector: '.source',
+        typePriority: 1
+      }
+    }
+
+    this.currentScopeDescriptor = null
+  }
+
+  getSuggestionsForScopeDescriptor (scopeDescriptor) {
+    this.buildConfigIfScopeChanged(scopeDescriptor)
+
+    const suggestions = []
+    for (const type of Object.keys(this.config)) {
+      if (this.config[type].suggestions) {
+        for (let k = 0; k < this.config[type].suggestions.length; k++) {
+          suggestions.push(this.config[type].suggestions[k])
+        }
+      }
+    }
+
+    return suggestions
+  }
+
+  scopeDescriptorToType (scopeDescriptor) {
+    const scopeChain = '.' + scopeDescriptor.scopes.join(' .')
+
+    if (this.scopesToTypeMap[scopeChain] !== undefined) {
+      return this.scopesToTypeMap[scopeChain]
+    }
+
+    this.buildConfigIfScopeChanged(scopeDescriptor)
+
+    let matchingType = null
+    let highestTypePriority = -1
+
+    const config = this.config
+
+    for (const type of Object.keys(config)) {
+      let {selectors, typePriority} = config[type]
+      if (selectors == null) continue
+      if (typePriority == null) typePriority = 0
+      if (typePriority > highestTypePriority &&
+          selectorsMatchScopeChain(selectors, scopeChain)) {
+        matchingType = type
+        highestTypePriority = typePriority
+      }
+    }
+
+    this.scopesToTypeMap[scopeChain] = matchingType
+
+    return matchingType
+  }
+
+  buildConfigIfScopeChanged (scopeDescriptor) {
+    if (
+      this.currentScopeDescriptor == null ||
+      !this.currentScopeDescriptor.isEqual(scopeDescriptor)
+    ) {
+      this.buildConfig(scopeDescriptor)
+      this.currentScopeDescriptor = scopeDescriptor
+      return this.currentScopeDescriptor
+    }
+  }
+
+  buildConfig (scopeDescriptor) {
+    this.config = {}
+    const legacyCompletions = this.settingsForScopeDescriptor(scopeDescriptor, 'editor.completions')
+    const allConfigEntries = this.settingsForScopeDescriptor(scopeDescriptor, 'autocomplete.symbols')
+
+    // TODO: ported from symbol provider - not sure about this
+    // Config entries are reverse sorted in order of specificity. We want most
+    // specific to win; this simplifies the loop.
+    allConfigEntries.reverse()
+
+    for (let i = 0; i < legacyCompletions.length; i++) {
+      const { value } = legacyCompletions[i]
+      if (Array.isArray(value) && value.length) {
+        this.addLegacyConfigEntry(value)
+      }
+    }
+
+    let addedConfigEntry = false
+    for (let j = 0; j < allConfigEntries.length; j++) {
+      const { value } = allConfigEntries[j]
+      if (!Array.isArray(value) && typeof value === 'object') {
+        this.addConfigEntry(value)
+        addedConfigEntry = true
+      }
+    }
+
+    if (!addedConfigEntry) { return this.addConfigEntry(this.defaultConfig) }
+  }
+
+  addLegacyConfigEntry (suggestions) {
+    suggestions = (suggestions.map((suggestion) => ({text: suggestion, type: 'builtin'})))
+    if (this.config.builtin == null) {
+      this.config.builtin = {suggestions: []}
+    }
+    this.config.builtin.suggestions = this.config.builtin.suggestions.concat(suggestions)
+    return this.config.builtin.suggestions
+  }
+
+  addConfigEntry (config) {
+    for (const type in config) {
+      const options = config[type]
+      if (this.config[type] == null) { this.config[type] = {} }
+      if (options.selector != null) { this.config[type].selectors = Selector.create(options.selector) }
+      this.config[type].typePriority = options.typePriority != null ? options.typePriority : 1
+
+      const suggestions = this.sanitizeSuggestionsFromConfig(options.suggestions, type)
+      if ((suggestions != null) && suggestions.length) { this.config[type].suggestions = suggestions }
+    }
+  }
+
+  sanitizeSuggestionsFromConfig (suggestions, type) {
+    if ((suggestions != null) && Array.isArray(suggestions)) {
+      const sanitizedSuggestions = []
+      for (let i = 0; i < suggestions.length; i++) {
+        let suggestion = suggestions[i]
+        if (typeof suggestion === 'string') {
+          sanitizedSuggestions.push({text: suggestion, type})
+        } else if (typeof suggestions[0] === 'object' && ((suggestion.text != null) || (suggestion.snippet != null))) {
+          suggestion = Object.assign({}, {type}, suggestion)
+          sanitizedSuggestions.push(suggestion)
+        }
+      }
+      return sanitizedSuggestions
+    } else {
+      return null
+    }
+  }
+
+  settingsForScopeDescriptor (scopeDescriptor, keyPath) {
+    const config = this.atomConfig.getAll(keyPath, {scope: scopeDescriptor})
+
+    return config
+  }
+}
diff --git a/packages/autocomplete-plus/lib/provider-manager.js b/packages/autocomplete-plus/lib/provider-manager.js
new file mode 100644
index 000000000..f097988a4
--- /dev/null
+++ b/packages/autocomplete-plus/lib/provider-manager.js
@@ -0,0 +1,303 @@
+const {CompositeDisposable, Disposable} = require('atom')
+const {isFunction, isString} = require('./type-helpers')
+const {Selector} = require('selector-kit')
+const stableSort = require('stable')
+const grim = require('grim')
+const {selectorsMatchScopeChain} = require('./scope-helpers')
+const {API_VERSION} = require('./private-symbols')
+const SubsequenceProvider = require('./subsequence-provider')
+const ProviderMetadata = require('./provider-metadata')
+
+module.exports =
+class ProviderManager {
+  constructor () {
+    this.defaultProvider = null
+    this.defaultProviderRegistration = null
+    this.providers = new Map()
+    this.store = null
+    this.subscriptions = null
+    this.globalBlacklist = null
+    this.applicableProviders = this.applicableProviders.bind(this)
+    this.toggleDefaultProvider = this.toggleDefaultProvider.bind(this)
+    this.setGlobalBlacklist = this.setGlobalBlacklist.bind(this)
+    this.metadataForProvider = this.metadataForProvider.bind(this)
+    this.apiVersionForProvider = this.apiVersionForProvider.bind(this)
+    this.addProvider = this.addProvider.bind(this)
+    this.removeProvider = this.removeProvider.bind(this)
+    this.registerProvider = this.registerProvider.bind(this)
+  }
+
+  initialize () {
+    this.subscriptions = new CompositeDisposable()
+    this.globalBlacklist = new CompositeDisposable()
+    this.subscriptions.add(this.globalBlacklist)
+
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.enableBuiltinProvider', value => this.toggleDefaultProvider(value)))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.scopeBlacklist', value => this.setGlobalBlacklist(value)))
+  }
+
+  dispose () {
+    this.toggleDefaultProvider(false)
+    if (this.subscriptions && this.subscriptions.dispose) {
+      this.subscriptions.dispose()
+    }
+    this.subscriptions = null
+    this.globalBlacklist = null
+    this.providers = null
+  }
+
+  applicableProviders (labels, scopeDescriptor) {
+    let providers = this.getProvidersForLabels(labels)
+    providers = this.filterProvidersByScopeDescriptor(providers, scopeDescriptor)
+    providers = this.sortProviders(providers, scopeDescriptor)
+    providers = this.filterProvidersByExcludeLowerPriority(providers)
+    return this.removeMetadata(providers)
+  }
+
+  getProvidersForLabels (labels) {
+    let result = new Set()
+    for (let label of labels) {
+      if (this.providers.has(label)) {
+        this.providers.get(label).forEach(result.add.bind(result))
+      }
+    }
+    return Array.from(result)
+  }
+
+  filterProvidersByScopeDescriptor (providers, scopeDescriptor) {
+    const scopeChain = scopeChainForScopeDescriptor(scopeDescriptor)
+    if (!scopeChain) { return [] }
+    if ((this.globalBlacklistSelectors != null) && selectorsMatchScopeChain(this.globalBlacklistSelectors, scopeChain)) { return [] }
+
+    const matchingProviders = []
+    let disableDefaultProvider = false
+    let defaultProviderMetadata = null
+    for (let i = 0; i < providers.length; i++) {
+      const providerMetadata = providers[i]
+      const {provider} = providerMetadata
+      if (provider === this.defaultProvider) {
+        defaultProviderMetadata = providerMetadata
+      }
+      if (providerMetadata.matchesScopeChain(scopeChain)) {
+        matchingProviders.push(providerMetadata)
+        if (providerMetadata.shouldDisableDefaultProvider(scopeChain)) {
+          disableDefaultProvider = true
+        }
+      }
+    }
+
+    if (disableDefaultProvider) {
+      const index = matchingProviders.indexOf(defaultProviderMetadata)
+      if (index > -1) { matchingProviders.splice(index, 1) }
+    }
+    return matchingProviders
+  }
+
+  sortProviders (providers, scopeDescriptor) {
+    const scopeChain = scopeChainForScopeDescriptor(scopeDescriptor)
+    return stableSort(providers, (providerA, providerB) => {
+      const priorityA = providerA.provider.suggestionPriority != null ? providerA.provider.suggestionPriority : 1
+      const priorityB = providerB.provider.suggestionPriority != null ? providerB.provider.suggestionPriority : 1
+      let difference = priorityB - priorityA
+      if (difference === 0) {
+        const specificityA = providerA.getSpecificity(scopeChain)
+        const specificityB = providerB.getSpecificity(scopeChain)
+        difference = specificityB - specificityA
+      }
+      return difference
+    }
+    )
+  }
+
+  filterProvidersByExcludeLowerPriority (providers) {
+    let lowestAllowedPriority = 0
+    for (let i = 0; i < providers.length; i++) {
+      const providerMetadata = providers[i]
+      const {provider} = providerMetadata
+      if (provider.excludeLowerPriority) {
+        lowestAllowedPriority = Math.max(lowestAllowedPriority, provider.inclusionPriority != null ? provider.inclusionPriority : 0)
+      }
+    }
+    return providers.filter((providerMetadata) => (providerMetadata.provider.inclusionPriority != null ? providerMetadata.provider.inclusionPriority : 0) >= lowestAllowedPriority).map((providerMetadata) => providerMetadata)
+  }
+
+  removeMetadata (providers) {
+    return providers.map(providerMetadata => providerMetadata.provider)
+  }
+
+  toggleDefaultProvider (enabled) {
+    if (enabled == null) return
+
+    if (enabled) {
+      if (this.defaultProvider != null || this.defaultProviderRegistration != null) return
+      this.defaultProvider = new SubsequenceProvider()
+      this.defaultProviderRegistration = this.registerProvider(this.defaultProvider, this.defaultProvider.apiVersion)
+    } else {
+      if (this.defaultProviderRegistration) this.defaultProviderRegistration.dispose()
+      if (this.defaultProvider) this.defaultProvider.dispose()
+      this.defaultProviderRegistration = null
+      this.defaultProvider = null
+    }
+  }
+
+  setGlobalBlacklist (globalBlacklist) {
+    this.globalBlacklistSelectors = null
+    if (globalBlacklist && globalBlacklist.length) {
+      this.globalBlacklistSelectors = Selector.create(globalBlacklist)
+    }
+  }
+
+  isValidProvider (provider, apiVersion) {
+    if (apiVersion >= 2) {
+      return (provider != null) &&
+      isFunction(provider.getSuggestions) &&
+      ((isString(provider.selector) && !!provider.selector.length) ||
+       (isString(provider.scopeSelector) && !!provider.scopeSelector.length))
+    } else {
+      return (provider != null) && isFunction(provider.requestHandler) && isString(provider.selector) && !!provider.selector.length
+    }
+  }
+
+  metadataForProvider (provider) {
+    for (let providers of this.providers.values()) {
+      for (let i = 0; i < providers.length; i++) {
+        const providerMetadata = providers[i]
+        if (providerMetadata.provider === provider) { return providerMetadata }
+      }
+    }
+    return null
+  }
+
+  apiVersionForProvider (provider) {
+    if (this.metadataForProvider(provider) && this.metadataForProvider(provider).apiVersion) {
+      return this.metadataForProvider(provider).apiVersion
+    }
+  }
+
+  isProviderRegistered (provider) {
+    return (this.metadataForProvider(provider) != null)
+  }
+
+  addProvider (provider, apiVersion = 3) {
+    if (this.isProviderRegistered(provider)) { return }
+    let providerMetadata = new ProviderMetadata(provider, apiVersion)
+    let labels = providerMetadata.getLabels()
+    for (var label of labels) {
+      if (!this.providers.has(label)) {
+        this.providers.set(label, [])
+      }
+      this.providers.get(label).push(providerMetadata)
+    }
+    if (provider.dispose != null) { return this.subscriptions.add(provider) }
+  }
+
+  removeProvider (provider) {
+    if (!this.providers) { return }
+    for (let providers of this.providers.values()) {
+      for (let i = 0; i < providers.length; i++) {
+        const providerMetadata = providers[i]
+        if (providerMetadata.provider === provider) {
+          providers.splice(i, 1)
+          break
+        }
+      }
+    }
+    if (provider.dispose != null) {
+      if (this.subscriptions) {
+        this.subscriptions.remove(provider)
+      }
+    }
+  }
+
+  registerProvider (provider, apiVersion = 3) {
+    if (provider == null) { return }
+
+    provider[API_VERSION] = apiVersion
+
+    switch (apiVersion) {
+      case 2:
+        if ((provider.id != null) && provider !== this.defaultProvider) {
+          grim.deprecate(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+  contains an \`id\` property.
+  An \`id\` attribute on your provider is no longer necessary.
+  See https://github.com/atom/autocomplete-plus/wiki/Provider-API`
+          )
+        }
+        if (provider.requestHandler != null) {
+          grim.deprecate(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+  contains a \`requestHandler\` property.
+  \`requestHandler\` has been renamed to \`getSuggestions\`.
+  See https://github.com/atom/autocomplete-plus/wiki/Provider-API`
+          )
+        }
+        if (provider.blacklist != null) {
+          grim.deprecate(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+  contains a \`blacklist\` property.
+  \`blacklist\` has been renamed to \`disableForScopeSelector\`.
+  See https://github.com/atom/autocomplete-plus/wiki/Provider-API`
+          )
+        }
+        break
+      case 3:
+        if (provider.selector != null) {
+          throw new Error(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+  specifies \`selector\` instead of the \`scopeSelector\` attribute.
+  See https://github.com/atom/autocomplete-plus/wiki/Provider-API.`)
+        }
+
+        if (provider.disableForSelector != null) {
+          throw new Error(`Autocomplete provider '${provider.constructor.name}(${provider.id})'
+  specifies \`disableForSelector\` instead of the \`disableForScopeSelector\`
+  attribute.
+  See https://github.com/atom/autocomplete-plus/wiki/Provider-API.`)
+        }
+        break
+    }
+
+    if (!this.isValidProvider(provider, apiVersion)) {
+      console.warn(`Provider ${provider.constructor.name} is not valid`, provider)
+      return new Disposable()
+    }
+
+    if (this.isProviderRegistered(provider)) { return }
+
+    this.addProvider(provider, apiVersion)
+
+    const disposable = new Disposable(() => {
+      this.removeProvider(provider)
+    })
+
+    // When the provider is disposed, remove its registration
+    const originalDispose = provider.dispose
+    if (originalDispose) {
+      provider.dispose = () => {
+        originalDispose.call(provider)
+        disposable.dispose()
+      }
+    }
+
+    return disposable
+  }
+}
+
+const scopeChainForScopeDescriptor = (scopeDescriptor) => {
+  // TODO: most of this is temp code to understand #308
+  const type = typeof scopeDescriptor
+  let hasScopeChain = false
+  if (type === 'object' && scopeDescriptor && scopeDescriptor.getScopeChain) {
+    hasScopeChain = true
+  }
+  if (type === 'string') {
+    return scopeDescriptor
+  } else if (type === 'object' && hasScopeChain) {
+    const scopeChain = scopeDescriptor.getScopeChain()
+    if ((scopeChain != null) && (scopeChain.replace == null)) {
+      const json = JSON.stringify(scopeDescriptor)
+      throw new Error(`01: ScopeChain is not correct type: ${type}; ${json}`)
+    }
+    return scopeChain
+  } else {
+    const json = JSON.stringify(scopeDescriptor)
+    throw new Error(`02: ScopeChain is not correct type: ${type}; ${json}`)
+  }
+}
diff --git a/packages/autocomplete-plus/lib/provider-metadata.js b/packages/autocomplete-plus/lib/provider-metadata.js
new file mode 100644
index 000000000..73c14bb45
--- /dev/null
+++ b/packages/autocomplete-plus/lib/provider-metadata.js
@@ -0,0 +1,69 @@
+'use babel'
+
+import { Selector } from 'selector-kit'
+import { selectorForScopeChain, selectorsMatchScopeChain } from './scope-helpers'
+
+export default class ProviderMetadata {
+  constructor (provider, apiVersion) {
+    this.provider = provider
+    this.apiVersion = apiVersion
+
+    // TODO API: remove this when 2.0 support is removed
+    if (this.provider.selector != null) {
+      this.scopeSelectors = Selector.create(this.provider.selector)
+    } else {
+      this.scopeSelectors = Selector.create(this.provider.scopeSelector)
+    }
+
+    // TODO API: remove this when 2.0 support is removed
+    if (this.provider.disableForSelector != null) {
+      this.disableForScopeSelectors = Selector.create(this.provider.disableForSelector)
+    } else if (this.provider.disableForScopeSelector != null) {
+      this.disableForScopeSelectors = Selector.create(this.provider.disableForScopeSelector)
+    }
+
+    // TODO API: remove this when 1.0 support is removed
+    let providerBlacklist
+    if (this.provider.providerblacklist && this.provider.providerblacklist['autocomplete-plus-fuzzyprovider']) {
+      providerBlacklist = this.provider.providerblacklist['autocomplete-plus-fuzzyprovider']
+    }
+    if (providerBlacklist) {
+      this.disableDefaultProviderSelectors = Selector.create(providerBlacklist)
+    }
+  }
+
+  getLabels () {
+    // The default label will let the provider be used for
+    // the main text editors of the workspace.
+    return this.provider.labels || ['workspace-center']
+  }
+
+  matchesScopeChain (scopeChain) {
+    if (this.disableForScopeSelectors != null) {
+      if (selectorsMatchScopeChain(this.disableForScopeSelectors, scopeChain)) { return false }
+    }
+
+    if (selectorsMatchScopeChain(this.scopeSelectors, scopeChain)) {
+      return true
+    } else {
+      return false
+    }
+  }
+
+  shouldDisableDefaultProvider (scopeChain) {
+    if (this.disableDefaultProviderSelectors != null) {
+      return selectorsMatchScopeChain(this.disableDefaultProviderSelectors, scopeChain)
+    } else {
+      return false
+    }
+  }
+
+  getSpecificity (scopeChain) {
+    const selector = selectorForScopeChain(this.scopeSelectors, scopeChain)
+    if (selector) {
+      return selector.getSpecificity()
+    } else {
+      return 0
+    }
+  }
+}
diff --git a/packages/autocomplete-plus/lib/scope-helpers.js b/packages/autocomplete-plus/lib/scope-helpers.js
new file mode 100644
index 000000000..3f1ba55bf
--- /dev/null
+++ b/packages/autocomplete-plus/lib/scope-helpers.js
@@ -0,0 +1,74 @@
+'use babel'
+
+import slick from 'atom-slick'
+
+const EscapeCharacterRegex = /[-!"#$%&'*+,/:;=?@|^~()<>{}[\]]/g
+
+const cachedMatchesBySelector = {}
+
+const getCachedMatch = (selector, scopeChain) => {
+  const cachedMatchesByScopeChain = cachedMatchesBySelector[selector]
+  if (cachedMatchesByScopeChain) {
+    return cachedMatchesByScopeChain[scopeChain]
+  }
+}
+
+const setCachedMatch = (selector, scopeChain, match) => {
+  let cachedMatchesByScopeChain = cachedMatchesBySelector[selector]
+  if (!cachedMatchesByScopeChain) {
+    cachedMatchesByScopeChain = {}
+    cachedMatchesBySelector[selector] = cachedMatchesByScopeChain
+  }
+  cachedMatchesByScopeChain[scopeChain] = match
+  cachedMatchesByScopeChain[scopeChain]
+}
+
+const parseScopeChain = (scopeChain) => {
+  scopeChain = scopeChain.replace(EscapeCharacterRegex, (match) => {
+    return '\\' + match[0]
+  })
+
+  const parsed = slick.parse(scopeChain)[0]
+  if (!parsed || parsed.length === 0) {
+    return []
+  }
+
+  const result = []
+  for (let i = 0; i < parsed.length; i++) {
+    result.push(parsed[i])
+  }
+
+  return result
+}
+
+const selectorForScopeChain = (selectors, scopeChain) => {
+  for (let i = 0; i < selectors.length; i++) {
+    const selector = selectors[i]
+    const cachedMatch = getCachedMatch(selector, scopeChain)
+    if (cachedMatch != null) {
+      if (cachedMatch) {
+        return selector
+      } else {
+        continue
+      }
+    } else {
+      const scopes = parseScopeChain(scopeChain)
+      while (scopes.length > 0) {
+        if (selector.matches(scopes)) {
+          setCachedMatch(selector, scopeChain, true)
+          return selector
+        }
+        scopes.pop()
+      }
+      setCachedMatch(selector, scopeChain, false)
+    }
+  }
+
+  return null
+}
+
+const selectorsMatchScopeChain = (selectors, scopeChain) => { return selectorForScopeChain(selectors, scopeChain) != null }
+
+const buildScopeChainString = (scopes) => { return `.${scopes.join(' .')}` }
+
+export { selectorsMatchScopeChain, selectorForScopeChain, buildScopeChainString }
diff --git a/packages/autocomplete-plus/lib/snippet-parser.js b/packages/autocomplete-plus/lib/snippet-parser.js
new file mode 100644
index 000000000..c5f1a41f2
--- /dev/null
+++ b/packages/autocomplete-plus/lib/snippet-parser.js
@@ -0,0 +1,99 @@
+'use babel'
+
+export default class SnippetParser {
+  reset () {
+    this.inSnippet = false
+    this.inSnippetBody = false
+    this.snippetStart = -1
+    this.snippetEnd = -1
+    this.bodyStart = -1
+    this.bodyEnd = -1
+    this.escapedBraceIndices = null
+  }
+
+  findSnippets (text) {
+    if (text.length <= 0 || text.indexOf('$') === -1) { return } // No snippets
+    this.reset()
+    const snippets = []
+
+    // We're not using a regex because escaped right braces cannot be tracked without lookbehind,
+    // which doesn't exist yet for javascript; consequently we need to iterate through each character.
+    // This might feel ugly, but it's necessary.
+    for (let index = 0; index < text.length; index++) {
+      if (this.inSnippet && this.snippetEnd === index) {
+        let body = text.slice(this.bodyStart, this.bodyEnd + 1)
+        body = this.removeBraceEscaping(body, this.bodyStart, this.escapedBraceIndices)
+        snippets.push({snippetStart: this.snippetStart, snippetEnd: this.snippetEnd, bodyStart: this.bodyStart, bodyEnd: this.bodyEnd, body})
+        this.reset()
+        continue
+      }
+
+      if (this.inSnippet && index >= this.bodyStart && index <= this.bodyEnd) { this.inBody = true }
+      if (this.inSnippet && (index > this.bodyEnd || index < this.bodyStart)) { this.inBody = false }
+      if (this.bodyStart === -1 || this.bodyEnd === -1) { this.inBody = false }
+      if (this.inSnippet && !this.inBody) { continue }
+      if (this.inSnippet && this.inBody) { continue }
+
+      // Determine if we've found a new snippet
+      if (!this.inSnippet && text.indexOf('${', index) === index) {
+        // Find index of colon
+        let colonIndex = text.indexOf(':', index + 3)
+        if (colonIndex !== -1) {
+          // Disqualify snippet unless the text between '${' and ':' are digits
+          const groupStart = index + 2
+          const groupEnd = colonIndex - 1
+          if (groupEnd >= groupStart) {
+            for (let i = groupStart; i < groupEnd; i++) {
+              if (isNaN(parseInt(text.charAt(i)))) { colonIndex = -1 }
+            }
+          } else {
+            colonIndex = -1
+          }
+        }
+
+        // Find index of '}'
+        let rightBraceIndex = -1
+        if (colonIndex !== -1) {
+          let i = index + 4
+          while (true) {
+            rightBraceIndex = text.indexOf('}', i)
+            if (rightBraceIndex === -1) { break }
+            if (text.charAt(rightBraceIndex - 1) === '\\') {
+              if (this.escapedBraceIndices == null) { this.escapedBraceIndices = [] }
+              this.escapedBraceIndices.push(rightBraceIndex - 1)
+            } else {
+              break
+            }
+            i = rightBraceIndex + 1
+          }
+        }
+
+        if (colonIndex !== -1 && rightBraceIndex !== -1 && colonIndex < rightBraceIndex) {
+          this.inSnippet = true
+          this.inBody = false
+          this.snippetStart = index
+          this.snippetEnd = rightBraceIndex
+          this.bodyStart = colonIndex + 1
+          this.bodyEnd = rightBraceIndex - 1
+          continue
+        } else {
+          this.reset()
+        }
+      }
+    }
+
+    return snippets
+  }
+
+  removeBraceEscaping (body, bodyStart, escapedBraceIndices) {
+    if (escapedBraceIndices != null) {
+      for (let i = 0; i < escapedBraceIndices.length; i++) {
+        const bodyIndex = escapedBraceIndices[i]
+        body = removeCharFromString(body, bodyIndex - bodyStart - i)
+      }
+    }
+    return body
+  }
+};
+
+const removeCharFromString = (str, index) => str.slice(0, index) + str.slice(index + 1)
diff --git a/packages/autocomplete-plus/lib/subsequence-provider.js b/packages/autocomplete-plus/lib/subsequence-provider.js
new file mode 100644
index 000000000..ab2f796a0
--- /dev/null
+++ b/packages/autocomplete-plus/lib/subsequence-provider.js
@@ -0,0 +1,265 @@
+const { CompositeDisposable, TextBuffer } = require('atom')
+const ProviderConfig = require('./provider-config')
+const getAdditionalWordCharacters = require('./get-additional-word-characters')
+
+module.exports =
+class SubsequenceProvider {
+  constructor (options = {}) {
+    this.apiVersion = 4
+    this.defaults()
+
+    this.subscriptions = new CompositeDisposable()
+    this.watchedBuffers = new Map()
+
+    if (options.atomConfig) {
+      this.atomConfig = options.atomConfig
+    }
+
+    if (options.atomWorkspace) {
+      this.atomWorkspace = options.atomWorkspace
+    }
+
+    this.providerConfig = new ProviderConfig({
+      atomConfig: this.atomConfig
+    })
+
+    // make this.X available where X is the autocomplete-plus.X setting
+    const settings = [
+      'autocomplete-plus.enableExtendedUnicodeSupport', // TODO
+      'autocomplete-plus.minimumWordLength',
+      'autocomplete-plus.includeCompletionsFromAllBuffers',
+      'autocomplete-plus.useLocalityBonus',
+      'autocomplete-plus.strictMatching'
+    ]
+    settings.forEach(property => {
+      this.subscriptions.add(this.atomConfig.observe(property, val => {
+        this[property.split('.')[1]] = val
+      }))
+    })
+
+    this.subscriptions.add(this.atomWorkspace.observeTextEditors((e) => {
+      this.watchBuffer(e)
+    }))
+
+    this.configSuggestionsBuffer = new TextBuffer()
+  }
+
+  inspect () {
+    return `SubsequenceProvider {apiVersion: ${this.apiVersion}}`
+  }
+
+  defaults () {
+    this.atomConfig = atom.config
+    this.atomWorkspace = atom.workspace
+
+    this.possibleWordCharacters = '/\\()"\':,.;<>~!@#$%^&*|+=[]{}`?_-…'.split('')
+    this.enableExtendedUnicodeSupport = false
+    this.maxSuggestions = 20
+    this.maxResultsPerBuffer = 20
+    this.maxSearchRowDelta = 3000
+
+    this.labels = ['workspace-center', 'default', 'subsequence-provider']
+    this.scopeSelector = '*'
+    this.inclusionPriority = 0
+    this.suggestionPriority = 0
+
+    this.watchedBuffers = null
+  }
+
+  dispose () {
+    return this.subscriptions.dispose()
+  }
+
+  watchBuffer (editor) {
+    const buffer = editor.getBuffer()
+
+    if (!this.watchedBuffers.has(buffer)) {
+      const bufferSubscriptions = new CompositeDisposable()
+      bufferSubscriptions.add(buffer.onDidDestroy(() => {
+        bufferSubscriptions.dispose()
+        this.watchedBuffers.delete(buffer)
+      }))
+    }
+
+    this.watchedBuffers.set(buffer, editor)
+  }
+
+  // This is kind of a hack. We throw the config suggestions in a buffer, so
+  // we can use .findWordsWithSubsequence on them.
+  configSuggestionsToSubsequenceMatches (suggestions, prefix) {
+    if (!suggestions || suggestions.length === 0) {
+      return Promise.resolve([])
+    }
+
+    const suggestionText = suggestions
+      .map(sug => sug.displayText || sug.snippet || sug.text)
+      .join('\n')
+
+    this.configSuggestionsBuffer.buffer.setText(suggestionText)
+
+    return this.configSuggestionsBuffer.findWordsWithSubsequence(
+      prefix,
+      '(){}[] :;,$@%',
+      this.maxResultsPerBuffer
+    ).then(matches => {
+      for (let k = 0; k < matches.length; k++) {
+        matches[k].configSuggestion = suggestions[matches[k].positions[0].row]
+      }
+      return matches
+    })
+  }
+
+  clampedRange (maxDelta, cursorRow, maxRow) {
+    const clampedMinRow = Math.max(0, cursorRow - maxDelta)
+    const clampedMaxRow = Math.min(maxRow, cursorRow + maxDelta)
+    const actualMinRowDelta = cursorRow - clampedMinRow
+    const actualMaxRowDelta = clampedMaxRow - cursorRow
+
+    return {
+      start: {
+        row: clampedMinRow - maxDelta + actualMaxRowDelta,
+        column: 0
+      },
+      end: {
+        row: clampedMaxRow + maxDelta - actualMinRowDelta,
+        column: 0
+      }
+    }
+  }
+
+  bufferToSubsequenceMatches (prefix, additionalWordCharacters, buffer) {
+    const position = this.watchedBuffers.get(buffer).getCursorBufferPosition()
+    const searchRange = this.clampedRange(
+      this.maxSearchRowDelta,
+      position.row,
+      buffer.getEndPosition().row
+    )
+    return buffer.findWordsWithSubsequenceInRange(
+      prefix,
+      additionalWordCharacters,
+      this.maxResultsPerBuffer,
+      searchRange
+    )
+  }
+
+  /*
+  Section: Suggesting Completions
+  */
+
+  getSuggestions ({editor, bufferPosition, prefix, scopeDescriptor}) {
+    if (!prefix) {
+      return
+    }
+
+    if (prefix.trim().length < this.minimumWordLength) {
+      return
+    }
+
+    const buffers = this.includeCompletionsFromAllBuffers
+      ? Array.from(this.watchedBuffers.keys())
+      : [editor.getBuffer()]
+
+    const currentEditorBuffer = editor.getBuffer()
+
+    const lastCursorPosition = editor.getLastCursor().getBufferPosition()
+
+    const additionalWordCharacters = getAdditionalWordCharacters(scopeDescriptor)
+
+    const configSuggestions = this.providerConfig.getSuggestionsForScopeDescriptor(
+      scopeDescriptor
+    )
+
+    const configMatches = this.configSuggestionsToSubsequenceMatches(
+      configSuggestions,
+      prefix
+    )
+
+    const subsequenceMatchToType = (match) => {
+      const editor = this.watchedBuffers.get(match.buffer)
+      const scopeDescriptor = editor.scopeDescriptorForBufferPosition(match.positions[0])
+      return this.providerConfig.scopeDescriptorToType(scopeDescriptor)
+    }
+
+    const matchToSuggestion = match => {
+      return match.configSuggestion || {
+        text: match.word,
+        type: subsequenceMatchToType(match),
+        characterMatchIndices: match.matchIndices
+      }
+    }
+
+    const bufferResultsToSuggestions = matchesByBuffer => {
+      const relevantMatches = []
+      let matchedWords = new Set()
+      let match
+
+      for (let k = 0; k < matchesByBuffer.length; k++) {
+        // The findWordsWithSubsequence method will return `null`
+        // if the async work was cancelled due to the buffer being
+        // mutated since it was enqueued. We return `null` in this
+        // case because `getSuggestions` will be called again anyway.
+        if (!matchesByBuffer[k]) return null
+
+        const buffer = buffers[k]
+        for (let l = 0; l < matchesByBuffer[k].length; l++) {
+          match = matchesByBuffer[k][l]
+
+          if (match.word === prefix) continue
+          if (matchedWords.has(match.word)) continue
+          if (this.strictMatching && match.word.indexOf(prefix) !== 0) continue
+
+          let matchIsUnderCursor = false
+          if (buffer === currentEditorBuffer && match.score > 0) {
+            let closestDistance
+            for (const position of match.positions) {
+              const distance = Math.abs(position.row - lastCursorPosition.row)
+              if (closestDistance == null || distance < closestDistance) {
+                closestDistance = distance
+              }
+
+              if (
+                distance === 0 &&
+                lastCursorPosition.column >= position.column &&
+                lastCursorPosition.column <= position.column + match.word.length
+              ) {
+                matchIsUnderCursor = true
+                break
+              }
+            }
+
+            if (this.useLocalityBonus) {
+              match.score += Math.floor(11 / (1 + 0.04 * closestDistance))
+            }
+          }
+
+          if (matchIsUnderCursor) continue
+
+          match.buffer = buffer
+
+          relevantMatches.push(match)
+          matchedWords.add(match.word)
+        }
+      }
+
+      return relevantMatches
+        .sort(compareMatches)
+        .slice(0, this.maxSuggestions)
+        .map(matchToSuggestion)
+    }
+
+    return Promise
+      .all(
+        buffers
+          .map(this.bufferToSubsequenceMatches.bind(this, prefix, additionalWordCharacters))
+          .concat(configMatches)
+      )
+      .then(bufferResultsToSuggestions)
+  }
+}
+
+const compareMatches = (a, b) => {
+  if (a.score - b.score === 0) {
+    return a.word.length - b.word.length
+  }
+  return b.score - a.score
+}
diff --git a/packages/autocomplete-plus/lib/suggestion-list-element.js b/packages/autocomplete-plus/lib/suggestion-list-element.js
new file mode 100644
index 000000000..3d3a765b4
--- /dev/null
+++ b/packages/autocomplete-plus/lib/suggestion-list-element.js
@@ -0,0 +1,697 @@
+const {CompositeDisposable} = require('atom')
+const SnippetParser = require('./snippet-parser')
+const {isString} = require('./type-helpers')
+const fuzzaldrinPlus = require('fuzzaldrin-plus')
+const {marked} = require('marked')
+const createDOMPurify = require('dompurify')
+
+const createSuggestionFrag = () => {
+  const frag = document.createDocumentFragment()
+  const children = ['icon-container', 'left-label', 'word-container', 'right-label']
+  children.forEach(c => {
+    let el = document.createElement('span')
+    el.className = c
+    if (c === 'word-container') {
+      let innerEl = document.createElement('span')
+      innerEl.className = 'word'
+      el.appendChild(innerEl)
+    }
+    frag.appendChild(el)
+  })
+  return frag
+}
+
+const ListTemplate = `<div class="suggestion-list-scroller">
+    <ol class="list-group"></ol>
+  </div>
+  <div class="suggestion-description">
+    <span class="suggestion-description-content"></span>
+    <a class="suggestion-description-more-link" href="#">More..</a>
+  </div>`
+
+const iconTypeToClass = {
+  'snippet': 'icon-move-right',
+  'import': 'icon-package',
+  'require': 'icon-package',
+  'module': 'icon-package',
+  'package': 'icon-package',
+  'tag': 'icon-code',
+  'attribute': 'icon-tag'
+}
+
+const SnippetStart = 1
+const SnippetEnd = 2
+const SnippetStartAndEnd = 3
+
+module.exports = class SuggestionListElement {
+  constructor (model) {
+    this.element = document.createElement('autocomplete-suggestion-list')
+    this.maxItems = 200
+    this.emptySnippetGroupRegex = /(\$\{\d+:\})|(\$\{\d+\})|(\$\d+)/ig
+    this.slashesInSnippetRegex = /\\\\/g
+    this.nodePool = null
+    this.subscriptions = new CompositeDisposable()
+    this.element.classList.add('popover-list', 'select-list', 'autocomplete-suggestion-list')
+    this.registerMouseHandling()
+    this.element.addEventListener('scroll', this.onScroll.bind(this), true)
+    this.snippetParser = new SnippetParser()
+    this.nodePool = []
+    this.element.innerHTML = ListTemplate
+    this.ol = this.element.querySelector('.list-group')
+    this.scroller = this.element.querySelector('.suggestion-list-scroller')
+    this.descriptionContainer = this.element.querySelector('.suggestion-description')
+    this.descriptionContent = this.element.querySelector('.suggestion-description-content')
+    this.descriptionMoreLink = this.element.querySelector('.suggestion-description-more-link')
+
+    this.model = model
+    if (this.model == null) { return }
+    this.subscriptions.add(this.model.onDidChangeItems(this.itemsChanged.bind(this)))
+    this.subscriptions.add(this.model.onDidChangeItem(this.itemChanged.bind(this)))
+    this.subscriptions.add(this.model.onDidSelectNext(this.moveSelectionDown.bind(this)))
+    this.subscriptions.add(this.model.onDidSelectPrevious(this.moveSelectionUp.bind(this)))
+    this.subscriptions.add(this.model.onDidSelectPageUp(this.moveSelectionPageUp.bind(this)))
+    this.subscriptions.add(this.model.onDidSelectPageDown(this.moveSelectionPageDown.bind(this)))
+    this.subscriptions.add(this.model.onDidSelectTop(this.moveSelectionToTop.bind(this)))
+    this.subscriptions.add(this.model.onDidSelectBottom(this.moveSelectionToBottom.bind(this)))
+    this.subscriptions.add(this.model.onDidConfirmSelection(this.confirmSelection.bind(this)))
+    this.subscriptions.add(this.model.onDidconfirmSelectionIfNonDefault(this.confirmSelectionIfNonDefault.bind(this)))
+    this.subscriptions.add(this.model.onDidDispose(this.dispose.bind(this)))
+
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.suggestionListFollows', suggestionListFollows => {
+      this.suggestionListFollows = suggestionListFollows
+    }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.maxVisibleSuggestions', maxVisibleSuggestions => {
+      this.maxVisibleSuggestions = maxVisibleSuggestions
+    }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.useAlternateScoring', useAlternateScoring => {
+      this.useAlternateScoring = useAlternateScoring
+    }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.moveToCancel', moveToCancel => {
+      this.moveToCancel = moveToCancel
+    }))
+
+    process.nextTick(() => this.render())
+  }
+
+  // This should be unnecessary but the events we need to override
+  // are handled at a level that can't be blocked by react synthetic
+  // events because they are handled at the document
+  registerMouseHandling () {
+    this.element.onmousewheel = event => event.stopPropagation()
+    this.element.onmousedown = (event) => {
+      const item = this.findItem(event)
+      if (item && item.dataset && item.dataset.index) {
+        this.selectedIndex = item.dataset.index
+        event.stopPropagation()
+      }
+    }
+
+    this.element.onmouseup = (event) => {
+      const item = this.findItem(event)
+      if (item && item.dataset && item.dataset.index) {
+        event.stopPropagation()
+        this.confirmSelection()
+      }
+    }
+  }
+
+  onScroll (event) {
+    atom.views.updateDocument(this.renderExtraItems.bind(this))
+  }
+
+  findItem (event) {
+    let item = event.target
+    while (item.tagName !== 'LI' && item !== this.element) { item = item.parentNode }
+    if (item.tagName === 'LI') { return item }
+  }
+
+  updateDescription (item) {
+    if (!item) {
+      if (this.model && this.model.items) {
+        item = this.model.items[this.selectedIndex]
+      }
+    }
+    if (!item) {
+      return
+    }
+
+    if (item.descriptionMarkdown && item.descriptionMarkdown.length > 0) {
+      this.descriptionContainer.style.display = 'block'
+      this.descriptionContent.innerHTML = createDOMPurify().sanitize(
+        marked(item.descriptionMarkdown, {
+          gfm: true,
+          breaks: true,
+          sanitize: false
+        })
+      )
+      this.setDescriptionMoreLink(item)
+    } else if (item.description && item.description.length > 0) {
+      this.descriptionContainer.style.display = 'block'
+      this.descriptionContent.textContent = item.description
+      this.setDescriptionMoreLink(item)
+    } else {
+      this.descriptionContainer.style.display = 'none'
+    }
+  }
+
+  setDescriptionMoreLink (item) {
+    if ((item.descriptionMoreURL != null) && (item.descriptionMoreURL.length != null)) {
+      this.descriptionMoreLink.style.display = 'inline'
+      this.descriptionMoreLink.setAttribute('href', item.descriptionMoreURL)
+    } else {
+      this.descriptionMoreLink.style.display = 'none'
+      this.descriptionMoreLink.setAttribute('href', '#')
+    }
+  }
+
+  itemChanged ({suggestion, index}) {
+    atom.views.updateDocument(this.renderItem.bind(this, suggestion, index))
+    atom.views.updateDocument(this.updateDescription.bind(this))
+  }
+
+  itemsChanged () {
+    if (this.model && this.model.items && this.model.items.length) {
+      return this.render()
+    } else {
+      return atom.views.updateDocument(this.returnItemsToPool.bind(this, 0))
+    }
+  }
+
+  render () {
+    this.nonDefaultIndex = false
+    this.selectedIndex = 0
+    this.model.select(this.getSelectedItem())
+    if (atom.views.pollAfterNextUpdate) {
+      atom.views.pollAfterNextUpdate()
+    }
+
+    atom.views.updateDocument(this.renderItems.bind(this))
+    atom.views.readDocument(this.readUIPropsFromDOM.bind(this))
+  }
+
+  moveSelectionUp () {
+    if (this.selectedIndex > 0) {
+      return this.setSelectedIndex(this.selectedIndex - 1)
+    } else if (this.moveToCancel) {
+      this.model.activeEditor.moveUp(1)
+      return this.model.cancel()
+    } else {
+      return this.setSelectedIndex(this.visibleItems().length - 1)
+    }
+  }
+
+  moveSelectionDown () {
+    if (this.selectedIndex < (this.visibleItems().length - 1)) {
+      return this.setSelectedIndex(this.selectedIndex + 1)
+    } else if (this.moveToCancel) {
+      this.model.activeEditor.moveDown(1)
+      return this.model.cancel()
+    } else {
+      return this.setSelectedIndex(0)
+    }
+  }
+
+  moveSelectionPageUp () {
+    const newIndex = Math.max(0, this.selectedIndex - this.maxVisibleSuggestions)
+
+    if (this.moveToCancel) {
+      const lines = this.model.activeEditor.getScreenLineCount()
+      this.model.activeEditor.moveUp(lines)
+      return this.model.cancel()
+    } else if (this.selectedIndex !== newIndex) {
+      return this.setSelectedIndex(newIndex)
+    }
+  }
+
+  moveSelectionPageDown () {
+    const itemsLength = this.visibleItems().length
+    const newIndex = Math.min(itemsLength - 1, this.selectedIndex + this.maxVisibleSuggestions)
+
+    if (this.moveToCancel) {
+      const lines = this.model.activeEditor.getScreenLineCount()
+      this.model.activeEditor.moveDown(lines)
+      return this.model.cancel()
+    } else if (this.selectedIndex !== newIndex) {
+      return this.setSelectedIndex(newIndex)
+    }
+  }
+
+  moveSelectionToTop () {
+    const newIndex = 0
+
+    if (this.moveToCancel) {
+      this.model.activeEditor.moveToTop()
+      return this.model.cancel()
+    } else if (this.selectedIndex !== newIndex) {
+      return this.setSelectedIndex(newIndex)
+    }
+  }
+
+  moveSelectionToBottom () {
+    const newIndex = this.visibleItems().length - 1
+
+    if (this.moveToCancel) {
+      this.model.activeEditor.moveToBottom()
+      return this.model.cancel()
+    } else if (this.selectedIndex !== newIndex) {
+      return this.setSelectedIndex(newIndex)
+    }
+  }
+
+  setSelectedIndex (index) {
+    this.nonDefaultIndex = true
+    this.selectedIndex = index
+
+    this.model.select(this.getSelectedItem())
+
+    if (index > this.maxVisibleSuggestions + 1) {
+      atom.views.updateDocument(this.renderExtraItems.bind(this))
+    }
+
+    return atom.views.updateDocument(this.renderSelectedItem.bind(this))
+  }
+
+  visibleItems () {
+    if (this.model && this.model.items) {
+      return this.model.items.slice(0, this.maxItems)
+    }
+  }
+
+  // Private: Get the currently selected item
+  //
+  // Returns the selected {Object}
+  getSelectedItem () {
+    if (this.model && this.model.items) {
+      return this.model.items[this.selectedIndex]
+    }
+  }
+
+  // Private: Confirms the currently selected item or cancels the list view
+  // if no item has been selected
+  confirmSelection () {
+    if (!this.model.isActive()) { return }
+    const item = this.getSelectedItem()
+    if (item != null) {
+      return this.model.confirm(item)
+    } else {
+      return this.model.cancel()
+    }
+  }
+
+  // Private: Confirms the currently selected item only if it is not the default
+  // item or cancels the view if none has been selected.
+  confirmSelectionIfNonDefault (event) {
+    if (!this.model.isActive()) { return }
+    if (this.nonDefaultIndex) {
+      return this.confirmSelection()
+    } else {
+      this.model.cancel()
+      return event.abortKeyBinding()
+    }
+  }
+
+  renderItems () {
+    let left
+    this.element.style.width = null
+    const items = (left = this.visibleItems()) != null ? left : []
+    let longestDesc = 0
+    let longestDescIndex = null
+    for (let index = 0; index < Math.min(items.length, this.maxVisibleSuggestions + 1); index++) {
+      const item = items[index]
+      this.renderItem(item, index)
+      const descLength = this.descriptionLength(item)
+      if (descLength > longestDesc) {
+        longestDesc = descLength
+        longestDescIndex = index
+      }
+    }
+
+    // Defer the rendering of suggestions that are not initially visible
+    if (items.length > this.maxVisibleSuggestions + 1) {
+      this.extraItems = items.slice(this.maxVisibleSuggestions + 1)
+    } else {
+      this.extraItems = null
+    }
+
+    this.updateDescription(items[longestDescIndex])
+    return atom.views.updateDocument(this.returnItemsToPool.bind(this, items.length))
+  }
+
+  renderExtraItems () {
+    if (this.extraItems) {
+      this.extraItems.forEach((item, index) => {
+        this.renderItem(item, index + this.maxVisibleSuggestions + 1)
+      })
+    }
+
+    this.extraItems = null
+  }
+
+  returnItemsToPool (pivotIndex) {
+    if (!this.ol) { return }
+
+    let li = this.ol.childNodes[pivotIndex]
+    while ((this.ol != null) && li) {
+      li.remove()
+      this.nodePool.push(li)
+      li = this.ol.childNodes[pivotIndex]
+    }
+  }
+
+  descriptionLength (item) {
+    let count = 0
+    if (item.description != null) {
+      count += item.description.length
+    }
+    if (item.descriptionMoreURL != null) {
+      count += 6
+    }
+    return count
+  }
+
+  renderSelectedItem () {
+    if (this.selectedLi && this.selectedLi.classList) {
+      this.selectedLi.classList.remove('selected')
+    }
+
+    this.selectedLi = this.ol.childNodes[this.selectedIndex]
+    if (this.selectedLi != null) {
+      this.selectedLi.classList.add('selected')
+      this.scrollSelectedItemIntoView()
+      return this.updateDescription()
+    }
+  }
+
+  // This is reading the DOM in the updateDOM cycle. If we dont, there is a flicker :/
+  scrollSelectedItemIntoView () {
+    const { scrollTop } = this.scroller
+    const selectedItemTop = this.selectedLi.offsetTop
+    if (selectedItemTop < scrollTop) {
+      // scroll up
+      this.scroller.scrollTop = selectedItemTop
+      return
+    }
+
+    const { itemHeight } = this.uiProps
+    const scrollerHeight = (this.maxVisibleSuggestions * itemHeight) + this.uiProps.paddingHeight
+    if (selectedItemTop + itemHeight > scrollTop + scrollerHeight) {
+      // scroll down
+      this.scroller.scrollTop = (selectedItemTop - scrollerHeight) + itemHeight
+    }
+  }
+
+  readUIPropsFromDOM () {
+    let wordContainer
+    if (this.selectedLi) {
+      wordContainer = this.selectedLi.querySelector('.word-container')
+    }
+
+    if (!this.uiProps) { this.uiProps = {} }
+    this.uiProps.width = this.element.offsetWidth + 1
+    this.uiProps.marginLeft = 0
+    if (wordContainer && wordContainer.offsetLeft) {
+      this.uiProps.marginLeft = -wordContainer.offsetLeft
+    }
+    if (!this.uiProps.itemHeight && this.selectedLi) {
+      this.uiProps.itemHeight = this.selectedLi.offsetHeight
+    }
+    if (!this.uiProps.paddingHeight) {
+      this.uiProps.paddingHeight = parseInt(getComputedStyle(this.element)['padding-top']) + parseInt(getComputedStyle(this.element)['padding-bottom'])
+      if (!this.uiProps.paddingHeight) {
+        this.uiProps.paddingHeight = 0
+      }
+    }
+
+    // Update UI during this read, so that when polling the document the latest
+    // changes can be picked up.
+    return this.updateUIForChangedProps()
+  }
+
+  updateUIForChangedProps () {
+    this.scroller.style['max-height'] = `${(this.maxVisibleSuggestions * this.uiProps.itemHeight) + this.uiProps.paddingHeight}px`
+    this.element.style.width = `${this.uiProps.width}px`
+    if (this.suggestionListFollows === 'Word') {
+      this.element.style['margin-left'] = `${this.uiProps.marginLeft}px`
+    }
+    return this.updateDescription()
+  }
+
+  // Splits the classes on spaces so as not to anger the DOM gods
+  addClassToElement (element, classNames) {
+    if (!classNames) { return }
+    const classes = classNames.split(' ')
+    if (classes) {
+      for (let i = 0; i < classes.length; i++) {
+        let className = classes[i]
+        className = className.trim()
+        if (className) { element.classList.add(className) }
+      }
+    }
+  }
+
+  renderItem ({iconHTML, type, snippet, text, displayText, className, replacementPrefix, leftLabel, leftLabelHTML, rightLabel, rightLabelHTML, characterMatchIndices}, index) {
+    let li = this.ol.childNodes[index]
+    if (!li) {
+      if (this.nodepool && this.nodePool.length > 0) {
+        li = this.nodePool.pop()
+      } else {
+        li = document.createElement('li')
+        li.appendChild(createSuggestionFrag())
+      }
+      li.dataset.index = index
+      this.ol.appendChild(li)
+    }
+
+    li.className = ''
+    if (index === this.selectedIndex) { li.classList.add('selected') }
+    if (className) { this.addClassToElement(li, className) }
+    if (index === this.selectedIndex) { this.selectedLi = li }
+
+    const iconContainer = document.createElement('span')
+    iconContainer.className = 'icon-container'
+    li.replaceChild(iconContainer, li.querySelector('.icon-container'))
+
+    const sanitizedType = isString(type) ? type : ''
+    const sanitizedIconHTML = isString(iconHTML) ? iconHTML : undefined
+    if ((sanitizedIconHTML || sanitizedType) && iconHTML !== false) {
+      let icon = document.createElement('i')
+      icon.className = 'icon'
+
+      if (sanitizedIconHTML != null) {
+        icon.innerHTML = sanitizedIconHTML
+      } else {
+        let defaultIcon
+
+        if (iconTypeToClass[sanitizedType] != null) {
+          defaultIcon = document.createElement('i')
+          defaultIcon.className = iconTypeToClass[sanitizedType]
+        } else if (sanitizedType) {
+          defaultIcon = document.createElement('span')
+          defaultIcon.className = 'icon-letter'
+          defaultIcon.textContent = sanitizedType[0]
+        }
+
+        if (defaultIcon) {
+          icon.appendChild(defaultIcon)
+        }
+      }
+
+      if (type) { this.addClassToElement(icon, type) }
+
+      iconContainer.appendChild(icon)
+    }
+
+    const wordSpan = document.createElement('span')
+    wordSpan.className = 'word'
+    wordSpan.appendChild(
+      this.getDisplayFragment(text, snippet, displayText, replacementPrefix, characterMatchIndices)
+    )
+    li.querySelector('.word-container')
+      .replaceChild(wordSpan, li.querySelector('.word'))
+
+    const leftLabelSpan = li.querySelector('.left-label')
+    if (leftLabelHTML != null) {
+      leftLabelSpan.innerHTML = leftLabelHTML
+    } else if (leftLabel != null) {
+      leftLabelSpan.textContent = leftLabel
+    } else {
+      leftLabelSpan.textContent = ''
+    }
+
+    const rightLabelSpan = li.querySelector('.right-label')
+    if (rightLabelHTML != null) {
+      rightLabelSpan.innerHTML = rightLabelHTML
+    } else if (rightLabel != null) {
+      rightLabelSpan.textContent = rightLabel
+    } else {
+      rightLabelSpan.textContent = ''
+    }
+  }
+
+  getDisplayFragment (text, snippet, displayText, replacementPrefix, characterMatchIndices) {
+    let replacementText = text
+    let snippetIndices
+    if (typeof displayText === 'string') {
+      replacementText = displayText
+    } else if (typeof snippet === 'string') {
+      replacementText = this.removeEmptySnippets(snippet)
+      const snippets = this.snippetParser.findSnippets(replacementText)
+      replacementText = this.removeSnippetsFromText(snippets, replacementText)
+      snippetIndices = this.findSnippetIndices(snippets)
+    }
+
+    if (!characterMatchIndices) {
+      characterMatchIndices = this.findCharacterMatchIndices(replacementText, replacementPrefix)
+    } else {
+      characterMatchIndices = characterMatchIndices.reduce((matches, index) => {
+        matches[index] = true
+        return matches
+      }, {})
+    }
+
+    const appendNonMatchChars = (el, nonMatchChars) => {
+      if (nonMatchChars) {
+        el.appendChild(
+          document.createTextNode(nonMatchChars)
+        )
+      }
+    }
+
+    let frag = document.createDocumentFragment()
+    let workingEl = frag
+    var nonMatchChars = ''
+    for (let index = 0; index < replacementText.length; index++) {
+      if (snippetIndices && (snippetIndices[index] === SnippetStart || snippetIndices[index] === SnippetStartAndEnd)) {
+        appendNonMatchChars(workingEl, nonMatchChars)
+        nonMatchChars = ''
+
+        let s = document.createElement('span')
+        s.className = 'snippet-completion'
+        workingEl = s
+      }
+
+      if (characterMatchIndices && characterMatchIndices[index]) {
+        appendNonMatchChars(workingEl, nonMatchChars)
+        nonMatchChars = ''
+
+        let s = document.createElement('span')
+        s.className = 'character-match'
+        s.textContent = replacementText[index]
+        workingEl.appendChild(s)
+      } else {
+        nonMatchChars += replacementText[index]
+      }
+
+      if (snippetIndices && (snippetIndices[index] === SnippetEnd || snippetIndices[index] === SnippetStartAndEnd)) {
+        appendNonMatchChars(workingEl, nonMatchChars)
+        nonMatchChars = ''
+
+        frag.appendChild(workingEl)
+        workingEl = frag
+      }
+    }
+
+    appendNonMatchChars(workingEl, nonMatchChars)
+
+    return frag
+  }
+
+  removeEmptySnippets (text) {
+    if (!text || !text.length || text.indexOf('$') === -1) { return text } // No snippets
+    return text.replace(this.emptySnippetGroupRegex, '') // Remove all occurrences of $0 or ${0} or ${0:}
+  }
+
+  // Will convert 'abc(${1:d}, ${2:e})f' => 'abc(d, e)f'
+  //
+  // * `snippets` {Array} from `SnippetParser.findSnippets`
+  // * `text` {String} to remove snippets from
+  //
+  // Returns {String}
+  removeSnippetsFromText (snippets, text) {
+    if (!text || !text.length || !snippets || !snippets.length) {
+      return text
+    }
+    let index = 0
+    let result = ''
+    for (const {snippetStart, snippetEnd, body} of snippets) {
+      result += text.slice(index, snippetStart) + body
+      index = snippetEnd + 1
+    }
+    if (index !== text.length) {
+      result += text.slice(index, text.length)
+    }
+    result = result.replace(this.slashesInSnippetRegex, '\\')
+    return result
+  }
+
+  // Computes the indices of snippets in the resulting string from
+  // `removeSnippetsFromText`.
+  //
+  // * `snippets` {Array} from `SnippetParser.findSnippets`
+  //
+  // e.g. A replacement of 'abc(${1:d})e' is replaced to 'abc(d)e' will result in
+  //
+  // `{4: SnippetStartAndEnd}`
+  //
+  // Returns {Object} of {index: SnippetStart|End|StartAndEnd}
+  findSnippetIndices (snippets) {
+    if (!snippets) {
+      return
+    }
+    const indices = {}
+    let offsetAccumulator = 0
+    for (const {snippetStart, snippetEnd, body} of snippets) {
+      const bodyLength = body.length
+      const snippetLength = (snippetEnd - snippetStart) + 1
+      const startIndex = snippetStart - offsetAccumulator
+      const endIndex = (startIndex + bodyLength) - 1
+      offsetAccumulator += snippetLength - bodyLength
+
+      if (startIndex === endIndex) {
+        indices[startIndex] = SnippetStartAndEnd
+      } else {
+        indices[startIndex] = SnippetStart
+        indices[endIndex] = SnippetEnd
+      }
+    }
+
+    return indices
+  }
+
+  // Finds the indices of the chars in text that are matched by replacementPrefix
+  //
+  // e.g. text = 'abcde', replacementPrefix = 'acd' Will result in
+  //
+  // {0: true, 2: true, 3: true}
+  //
+  // Returns an {Object}
+  findCharacterMatchIndices (text, replacementPrefix) {
+    if (!text || !text.length || !replacementPrefix || !replacementPrefix.length) { return }
+    const matches = {}
+    if (this.useAlternateScoring) {
+      const matchIndices = fuzzaldrinPlus.match(text, replacementPrefix)
+      for (const i of matchIndices) {
+        matches[i] = true
+      }
+    } else {
+      let wordIndex = 0
+      for (let i = 0; i < replacementPrefix.length; i++) {
+        const ch = replacementPrefix[i]
+        while (wordIndex < text.length && text[wordIndex].toLowerCase() !== ch.toLowerCase()) {
+          wordIndex += 1
+        }
+        if (wordIndex >= text.length) { break }
+        matches[wordIndex] = true
+        wordIndex += 1
+      }
+    }
+    return matches
+  }
+
+  dispose () {
+    this.subscriptions.dispose()
+    if (this.parentNode) {
+      this.parentNode.removeChild(this)
+    }
+  }
+}
diff --git a/packages/autocomplete-plus/lib/suggestion-list.js b/packages/autocomplete-plus/lib/suggestion-list.js
new file mode 100644
index 000000000..1c54d5246
--- /dev/null
+++ b/packages/autocomplete-plus/lib/suggestion-list.js
@@ -0,0 +1,382 @@
+const {Emitter, CompositeDisposable} = require('atom')
+const { UnicodeLetters } = require('./unicode-helpers')
+const SuggestionListElement = require('./suggestion-list-element')
+
+module.exports =
+class SuggestionList {
+  constructor () {
+    this.wordPrefixRegex = null
+    this.cancel = this.cancel.bind(this)
+    this.confirm = this.confirm.bind(this)
+    this.confirmSelection = this.confirmSelection.bind(this)
+    this.confirmSelectionIfNonDefault = this.confirmSelectionIfNonDefault.bind(this)
+    this.show = this.show.bind(this)
+    this.showAtBeginningOfPrefix = this.showAtBeginningOfPrefix.bind(this)
+    this.showAtCursorPosition = this.showAtCursorPosition.bind(this)
+    this.hide = this.hide.bind(this)
+    this.destroyOverlay = this.destroyOverlay.bind(this)
+    this.activeEditor = null
+  }
+
+  initialize () {
+    this.emitter = new Emitter()
+    this.subscriptions = new CompositeDisposable()
+
+    this.subscriptions.add(atom.commands.add('atom-text-editor.autocomplete-active', {
+      'autocomplete-plus:confirm': this.confirmSelection,
+      'autocomplete-plus:confirmIfNonDefault': this.confirmSelectionIfNonDefault,
+      'autocomplete-plus:cancel': this.cancel
+    }))
+    this.subscriptions.add(atom.config.observe('autocomplete-plus.enableExtendedUnicodeSupport', (enableExtendedUnicodeSupport) => {
+      if (enableExtendedUnicodeSupport) {
+        this.wordPrefixRegex = new RegExp(`^[${UnicodeLetters}\\d_-]`)
+      } else {
+        this.wordPrefixRegex = /^[\w-]/
+      }
+      return this.wordPrefixRegex
+    }))
+  }
+
+  get suggestionListElement () {
+    if (!this._suggestionListElement) {
+      this._suggestionListElement = new SuggestionListElement(this)
+    }
+
+    return this._suggestionListElement
+  }
+
+  addBindings (editor) {
+    if (this.bindings && this.bindings.dispose) {
+      this.bindings.dispose()
+    }
+    this.bindings = new CompositeDisposable()
+
+    const completionKey = atom.config.get('autocomplete-plus.confirmCompletion') || ''
+
+    const keys = {}
+    if (completionKey.indexOf('tab') > -1) { keys['tab'] = 'autocomplete-plus:confirm' }
+    if (completionKey.indexOf('enter') > -1) {
+      if (completionKey.indexOf('always') > -1) {
+        keys['enter'] = 'autocomplete-plus:confirmIfNonDefault'
+      } else {
+        keys['enter'] = 'autocomplete-plus:confirm'
+      }
+    }
+
+    this.bindings.add(atom.keymaps.add(
+      'atom-text-editor.autocomplete-active',
+      {'atom-text-editor.autocomplete-active': keys})
+    )
+
+    const useCoreMovementCommands = atom.config.get('autocomplete-plus.useCoreMovementCommands')
+    const commandNamespace = useCoreMovementCommands ? 'core' : 'autocomplete-plus'
+
+    const commands = {}
+    commands[`${commandNamespace}:move-up`] = (event) => {
+      if (this.isActive() && this.items && this.items.length > 1) {
+        this.selectPrevious()
+        return event.stopImmediatePropagation()
+      }
+    }
+    commands[`${commandNamespace}:move-down`] = (event) => {
+      if (this.isActive() && this.items && this.items.length > 1) {
+        this.selectNext()
+        return event.stopImmediatePropagation()
+      }
+    }
+    commands[`${commandNamespace}:page-up`] = (event) => {
+      if (this.isActive() && this.items && this.items.length > 1) {
+        this.selectPageUp()
+        return event.stopImmediatePropagation()
+      }
+    }
+    commands[`${commandNamespace}:page-down`] = (event) => {
+      if (this.isActive() && this.items && this.items.length > 1) {
+        this.selectPageDown()
+        return event.stopImmediatePropagation()
+      }
+    }
+    commands[`${commandNamespace}:move-to-top`] = (event) => {
+      if (this.isActive() && this.items && this.items.length > 1) {
+        this.selectTop()
+        return event.stopImmediatePropagation()
+      }
+    }
+    commands[`${commandNamespace}:move-to-bottom`] = (event) => {
+      if (this.isActive() && this.items && this.items.length > 1) {
+        this.selectBottom()
+        return event.stopImmediatePropagation()
+      }
+    }
+
+    this.bindings.add(atom.commands.add(
+      atom.views.getView(editor), commands)
+    )
+
+    return this.bindings.add(
+      atom.config.onDidChange('autocomplete-plus.useCoreMovementCommands', () => {
+        return this.addBindings(editor)
+      }
+      ))
+  }
+
+  /*
+  Section: Event Triggers
+  */
+
+  cancel () {
+    return this.emitter.emit('did-cancel')
+  }
+
+  confirm (match) {
+    return this.emitter.emit('did-confirm', match)
+  }
+
+  confirmSelection () {
+    return this.emitter.emit('did-confirm-selection')
+  }
+
+  confirmSelectionIfNonDefault (event) {
+    return this.emitter.emit('did-confirm-selection-if-non-default', event)
+  }
+
+  select (suggestion) {
+    return this.emitter.emit('did-select', suggestion)
+  }
+
+  selectNext () {
+    return this.emitter.emit('did-select-next')
+  }
+
+  selectPrevious () {
+    return this.emitter.emit('did-select-previous')
+  }
+
+  selectPageUp () {
+    return this.emitter.emit('did-select-page-up')
+  }
+
+  selectPageDown () {
+    return this.emitter.emit('did-select-page-down')
+  }
+
+  selectTop () {
+    return this.emitter.emit('did-select-top')
+  }
+
+  selectBottom () {
+    return this.emitter.emit('did-select-bottom')
+  }
+
+  /*
+  Section: Events
+  */
+
+  onDidConfirmSelection (fn) {
+    return this.emitter.on('did-confirm-selection', fn)
+  }
+
+  onDidconfirmSelectionIfNonDefault (fn) {
+    return this.emitter.on('did-confirm-selection-if-non-default', fn)
+  }
+
+  onDidConfirm (fn) {
+    return this.emitter.on('did-confirm', fn)
+  }
+
+  onDidSelect (fn) {
+    return this.emitter.on('did-select', fn)
+  }
+
+  onDidSelectNext (fn) {
+    return this.emitter.on('did-select-next', fn)
+  }
+
+  onDidSelectPrevious (fn) {
+    return this.emitter.on('did-select-previous', fn)
+  }
+
+  onDidSelectPageUp (fn) {
+    return this.emitter.on('did-select-page-up', fn)
+  }
+
+  onDidSelectPageDown (fn) {
+    return this.emitter.on('did-select-page-down', fn)
+  }
+
+  onDidSelectTop (fn) {
+    return this.emitter.on('did-select-top', fn)
+  }
+
+  onDidSelectBottom (fn) {
+    return this.emitter.on('did-select-bottom', fn)
+  }
+
+  onDidCancel (fn) {
+    return this.emitter.on('did-cancel', fn)
+  }
+
+  onDidDispose (fn) {
+    return this.emitter.on('did-dispose', fn)
+  }
+
+  onDidChangeItems (fn) {
+    return this.emitter.on('did-change-items', fn)
+  }
+
+  onDidChangeItem (fn) {
+    return this.emitter.on('did-change-item', fn)
+  }
+
+  isActive () {
+    return (this.activeEditor != null)
+  }
+
+  show (editor, options) {
+    if (atom.config.get('autocomplete-plus.suggestionListFollows') === 'Cursor') {
+      return this.showAtCursorPosition(editor, options)
+    } else {
+      let { prefix } = options
+      let followRawPrefix = false
+      for (let i = 0; i < this.items.length; i++) {
+        const item = this.items[i]
+        if (item.replacementPrefix != null) {
+          prefix = item.replacementPrefix.trim()
+          followRawPrefix = true
+          break
+        }
+      }
+      return this.showAtBeginningOfPrefix(editor, prefix, followRawPrefix)
+    }
+  }
+
+  showAtBeginningOfPrefix (editor, prefix, followRawPrefix = false) {
+    let bufferPosition
+    if (editor) {
+      bufferPosition = editor.getCursorBufferPosition()
+      if (followRawPrefix || this.wordPrefixRegex.test(prefix)) {
+        bufferPosition = bufferPosition.translate([0, -prefix.length])
+      }
+    }
+
+    if (this.activeEditor === editor) {
+      if (!bufferPosition.isEqual(this.displayBufferPosition)) {
+        this.displayBufferPosition = bufferPosition
+        if (this.suggestionMarker) {
+          this.suggestionMarker.setBufferRange([bufferPosition, bufferPosition])
+        }
+      }
+    } else {
+      this.destroyOverlay()
+      if (editor) {
+        this.activeEditor = editor
+        this.displayBufferPosition = bufferPosition
+        const marker = this.suggestionMarker = editor.markBufferRange([bufferPosition, bufferPosition])
+        this.overlayDecoration = editor.decorateMarker(marker, {type: 'overlay', item: this.suggestionListElement, position: 'tail', class: 'autocomplete-plus'})
+        const editorElement = atom.views.getView(this.activeEditor)
+        if (editorElement && editorElement.classList) {
+          editorElement.classList.add('autocomplete-active')
+        }
+
+        this.addBindings(editor)
+      }
+    }
+  }
+
+  showAtCursorPosition (editor) {
+    if (this.activeEditor === editor || (editor == null)) { return }
+    this.destroyOverlay()
+
+    let marker
+    if (editor.getLastCursor()) {
+      marker = editor.getLastCursor().getMarker()
+    }
+    if (marker) {
+      this.activeEditor = editor
+      const editorElement = atom.views.getView(this.activeEditor)
+      if (editorElement && editorElement.classList) {
+        editorElement.classList.add('autocomplete-active')
+      }
+
+      this.overlayDecoration = editor.decorateMarker(marker, {type: 'overlay', item: this.suggestionListElement, class: 'autocomplete-plus'})
+      return this.addBindings(editor)
+    }
+  }
+
+  hide () {
+    this.destroyOverlay()
+    if (this.activeEditor === null) {
+      return
+    }
+
+    if (this.bindings && this.bindings.dispose) {
+      this.bindings.dispose()
+    }
+
+    this.activeEditor = null
+    return this.activeEditor
+  }
+
+  destroyOverlay () {
+    if (this.suggestionMarker && this.suggestionMarker.destroy) {
+      this.suggestionMarker.destroy()
+    } else if (this.overlayDecoration && this.overlayDecoration.destroy) {
+      this.overlayDecoration.destroy()
+    }
+    const editorElement = atom.views.getView(this.activeEditor)
+    if (editorElement && editorElement.classList) {
+      atom.views.updateDocument(() => {
+        editorElement.classList.remove('autocomplete-active')
+      })
+    }
+    this.suggestionMarker = undefined
+    this.overlayDecoration = undefined
+    return this.overlayDecoration
+  }
+
+  changeItems (items) {
+    this.items = items
+    return this.emitter.emit('did-change-items', this.items)
+  }
+
+  replaceItem (oldSuggestion, newSuggestion) {
+    if (newSuggestion == null) {
+      return
+    }
+
+    if (this.items == null) {
+      return
+    }
+
+    let itemChanged = false
+    let itemIndex
+
+    this.items.forEach((suggestion, idx) => {
+      if (suggestion === oldSuggestion) {
+        this.items[idx] = newSuggestion
+        itemChanged = true
+        itemIndex = idx
+      }
+    })
+
+    if (itemChanged) {
+      this.emitter.emit('did-change-item', {
+        suggestion: newSuggestion,
+        index: itemIndex
+      })
+    }
+  }
+
+  // Public: Clean up, stop listening to events
+  dispose () {
+    if (this.subscriptions) {
+      this.subscriptions.dispose()
+    }
+
+    if (this.bindings && this.bindings.dispose) {
+      this.bindings.dispose()
+    }
+    this.emitter.emit('did-dispose')
+    return this.emitter.dispose()
+  }
+}
diff --git a/packages/autocomplete-plus/lib/type-helpers.js b/packages/autocomplete-plus/lib/type-helpers.js
new file mode 100644
index 000000000..312a09d6a
--- /dev/null
+++ b/packages/autocomplete-plus/lib/type-helpers.js
@@ -0,0 +1,13 @@
+'use babel'
+
+const isFunction = value => isType(value, 'function')
+
+const isString = value => isType(value, 'string')
+
+const isType = (value, typeName) => {
+  const t = typeof value
+  if (t == null) { return false }
+  return t === typeName
+}
+
+export { isFunction, isString }
diff --git a/packages/autocomplete-plus/lib/unicode-helpers.js b/packages/autocomplete-plus/lib/unicode-helpers.js
new file mode 100644
index 000000000..a5130eea2
--- /dev/null
+++ b/packages/autocomplete-plus/lib/unicode-helpers.js
@@ -0,0 +1,4 @@
+'use babel'
+
+const UnicodeLetters = 'A-Za-z\\xAA\\xB5\\xBA\\xC0-\\xD6\\xD8-\\xF6\\xF8-\\u02C1\\u02C6-\\u02D1\\u02E0-\\u02E4\\u02EC\\u02EE\\u0370-\\u0374\\u0376\\u0377\\u037A-\\u037D\\u037F\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03F5\\u03F7-\\u0481\\u048A-\\u052F\\u0531-\\u0556\\u0559\\u0561-\\u0587\\u05D0-\\u05EA\\u05F0-\\u05F2\\u0620-\\u064A\\u066E\\u066F\\u0671-\\u06D3\\u06D5\\u06E5\\u06E6\\u06EE\\u06EF\\u06FA-\\u06FC\\u06FF\\u0710\\u0712-\\u072F\\u074D-\\u07A5\\u07B1\\u07CA-\\u07EA\\u07F4\\u07F5\\u07FA\\u0800-\\u0815\\u081A\\u0824\\u0828\\u0840-\\u0858\\u08A0-\\u08B4\\u0904-\\u0939\\u093D\\u0950\\u0958-\\u0961\\u0971-\\u0980\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09BD\\u09CE\\u09DC\\u09DD\\u09DF-\\u09E1\\u09F0\\u09F1\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A72-\\u0A74\\u0A85-\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AD0\\u0AE0\\u0AE1\\u0AF9\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B35-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B71\\u0B83\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB9\\u0BD0\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C39\\u0C3D\\u0C58-\\u0C5A\\u0C60\\u0C61\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBD\\u0CDE\\u0CE0\\u0CE1\\u0CF1\\u0CF2\\u0D05-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D3A\\u0D3D\\u0D4E\\u0D5F-\\u0D61\\u0D7A-\\u0D7F\\u0D85-\\u0D96\\u0D9A-\\u0DB1\\u0DB3-\\u0DBB\\u0DBD\\u0DC0-\\u0DC6\\u0E01-\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E46\\u0E81\\u0E82\\u0E84\\u0E87\\u0E88\\u0E8A\\u0E8D\\u0E94-\\u0E97\\u0E99-\\u0E9F\\u0EA1-\\u0EA3\\u0EA5\\u0EA7\\u0EAA\\u0EAB\\u0EAD-\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0EC6\\u0EDC-\\u0EDF\\u0F00\\u0F40-\\u0F47\\u0F49-\\u0F6C\\u0F88-\\u0F8C\\u1000-\\u102A\\u103F\\u1050-\\u1055\\u105A-\\u105D\\u1061\\u1065\\u1066\\u106E-\\u1070\\u1075-\\u1081\\u108E\\u10A0-\\u10C5\\u10C7\\u10CD\\u10D0-\\u10FA\\u10FC-\\u1248\\u124A-\\u124D\\u1250-\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288\\u128A-\\u128D\\u1290-\\u12B0\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-\\u12C5\\u12C8-\\u12D6\\u12D8-\\u1310\\u1312-\\u1315\\u1318-\\u135A\\u1380-\\u138F\\u13A0-\\u13F5\\u13F8-\\u13FD\\u1401-\\u166C\\u166F-\\u167F\\u1681-\\u169A\\u16A0-\\u16EA\\u16F1-\\u16F8\\u1700-\\u170C\\u170E-\\u1711\\u1720-\\u1731\\u1740-\\u1751\\u1760-\\u176C\\u176E-\\u1770\\u1780-\\u17B3\\u17D7\\u17DC\\u1820-\\u1877\\u1880-\\u18A8\\u18AA\\u18B0-\\u18F5\\u1900-\\u191E\\u1950-\\u196D\\u1970-\\u1974\\u1980-\\u19AB\\u19B0-\\u19C9\\u1A00-\\u1A16\\u1A20-\\u1A54\\u1AA7\\u1B05-\\u1B33\\u1B45-\\u1B4B\\u1B83-\\u1BA0\\u1BAE\\u1BAF\\u1BBA-\\u1BE5\\u1C00-\\u1C23\\u1C4D-\\u1C4F\\u1C5A-\\u1C7D\\u1CE9-\\u1CEC\\u1CEE-\\u1CF1\\u1CF5\\u1CF6\\u1D00-\\u1DBF\\u1E00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2071\\u207F\\u2090-\\u209C\\u2102\\u2107\\u210A-\\u2113\\u2115\\u2119-\\u211D\\u2124\\u2126\\u2128\\u212A-\\u212D\\u212F-\\u2139\\u213C-\\u213F\\u2145-\\u2149\\u214E\\u2183\\u2184\\u2C00-\\u2C2E\\u2C30-\\u2C5E\\u2C60-\\u2CE4\\u2CEB-\\u2CEE\\u2CF2\\u2CF3\\u2D00-\\u2D25\\u2D27\\u2D2D\\u2D30-\\u2D67\\u2D6F\\u2D80-\\u2D96\\u2DA0-\\u2DA6\\u2DA8-\\u2DAE\\u2DB0-\\u2DB6\\u2DB8-\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6\\u2DD8-\\u2DDE\\u2E2F\\u3005\\u3006\\u3031-\\u3035\\u303B\\u303C\\u3041-\\u3096\\u309D-\\u309F\\u30A1-\\u30FA\\u30FC-\\u30FF\\u3105-\\u312D\\u3131-\\u318E\\u31A0-\\u31BA\\u31F0-\\u31FF\\u3400-\\u4DB5\\u4E00-\\u9FD5\\uA000-\\uA48C\\uA4D0-\\uA4FD\\uA500-\\uA60C\\uA610-\\uA61F\\uA62A\\uA62B\\uA640-\\uA66E\\uA67F-\\uA69D\\uA6A0-\\uA6E5\\uA717-\\uA71F\\uA722-\\uA788\\uA78B-\\uA7AD\\uA7B0-\\uA7B7\\uA7F7-\\uA801\\uA803-\\uA805\\uA807-\\uA80A\\uA80C-\\uA822\\uA840-\\uA873\\uA882-\\uA8B3\\uA8F2-\\uA8F7\\uA8FB\\uA8FD\\uA90A-\\uA925\\uA930-\\uA946\\uA960-\\uA97C\\uA984-\\uA9B2\\uA9CF\\uA9E0-\\uA9E4\\uA9E6-\\uA9EF\\uA9FA-\\uA9FE\\uAA00-\\uAA28\\uAA40-\\uAA42\\uAA44-\\uAA4B\\uAA60-\\uAA76\\uAA7A\\uAA7E-\\uAAAF\\uAAB1\\uAAB5\\uAAB6\\uAAB9-\\uAABD\\uAAC0\\uAAC2\\uAADB-\\uAADD\\uAAE0-\\uAAEA\\uAAF2-\\uAAF4\\uAB01-\\uAB06\\uAB09-\\uAB0E\\uAB11-\\uAB16\\uAB20-\\uAB26\\uAB28-\\uAB2E\\uAB30-\\uAB5A\\uAB5C-\\uAB65\\uAB70-\\uABE2\\uAC00-\\uD7A3\\uD7B0-\\uD7C6\\uD7CB-\\uD7FB\\uF900-\\uFA6D\\uFA70-\\uFAD9\\uFB00-\\uFB06\\uFB13-\\uFB17\\uFB1D\\uFB1F-\\uFB28\\uFB2A-\\uFB36\\uFB38-\\uFB3C\\uFB3E\\uFB40\\uFB41\\uFB43\\uFB44\\uFB46-\\uFBB1\\uFBD3-\\uFD3D\\uFD50-\\uFD8F\\uFD92-\\uFDC7\\uFDF0-\\uFDFB\\uFE70-\\uFE74\\uFE76-\\uFEFC\\uFF21-\\uFF3A\\uFF41-\\uFF5A\\uFF66-\\uFFBE\\uFFC2-\\uFFC7\\uFFCA-\\uFFCF\\uFFD2-\\uFFD7\\uFFDA-\\uFFDC'
+export { UnicodeLetters }
diff --git a/packages/autocomplete-plus/package-lock.json b/packages/autocomplete-plus/package-lock.json
new file mode 100644
index 000000000..0068d5ffa
--- /dev/null
+++ b/packages/autocomplete-plus/package-lock.json
@@ -0,0 +1,3054 @@
+{
+  "name": "autocomplete-plus",
+  "version": "2.42.6",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "autocomplete-plus",
+      "version": "2.42.6",
+      "license": "MIT",
+      "dependencies": {
+        "atom-slick": "^2.0.0",
+        "dompurify": "^2.2.6",
+        "fuzzaldrin": "^2.1.0",
+        "fuzzaldrin-plus": "^0.6.0",
+        "grim": "^2.0.1",
+        "marked": "^4.0.10",
+        "minimatch": "^3.0.3",
+        "selector-kit": "^0.1",
+        "stable": "^0.1.5",
+        "underscore-plus": "^1.6.6"
+      },
+      "devDependencies": {
+        "coffeelint": "^1.9.7",
+        "fs-plus": ">=2.4.0",
+        "standard": "^8.3.0",
+        "temp": ">=0.7.0"
+      },
+      "engines": {
+        "atom": ">=0.189.0 <2.0.0"
+      }
+    },
+    "node_modules/acorn": {
+      "version": "5.7.4",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+      "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
+      "dev": true,
+      "bin": {
+        "acorn": "bin/acorn"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
+    "node_modules/acorn-jsx": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
+      "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
+      "dev": true,
+      "dependencies": {
+        "acorn": "^3.0.4"
+      }
+    },
+    "node_modules/acorn-jsx/node_modules/acorn": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+      "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
+      "dev": true,
+      "bin": {
+        "acorn": "bin/acorn"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
+    "node_modules/ajv": {
+      "version": "4.11.8",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
+      "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
+      "dev": true,
+      "dependencies": {
+        "co": "^4.6.0",
+        "json-stable-stringify": "^1.0.1"
+      }
+    },
+    "node_modules/ajv-keywords": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-1.5.1.tgz",
+      "integrity": "sha1-MU3QpLM2j609/NxU7eYXG4htrzw=",
+      "dev": true,
+      "peerDependencies": {
+        "ajv": ">=4.10.0"
+      }
+    },
+    "node_modules/ansi-escapes": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-1.4.0.tgz",
+      "integrity": "sha1-06ioOzGapneTZisT52HHkRQiMG4=",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/ansi-styles": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/argparse": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dev": true,
+      "dependencies": {
+        "sprintf-js": "~1.0.2"
+      }
+    },
+    "node_modules/async": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+      "dev": true
+    },
+    "node_modules/atom-slick": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/atom-slick/-/atom-slick-2.0.0.tgz",
+      "integrity": "sha1-/w2+Fb4sTtomi50w124lF+C308o=",
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/babel-code-frame": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
+      "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
+      "dev": true,
+      "dependencies": {
+        "chalk": "^1.1.3",
+        "esutils": "^2.0.2",
+        "js-tokens": "^3.0.2"
+      }
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/buffer-from": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
+      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
+      "dev": true
+    },
+    "node_modules/caller-path": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/caller-path/-/caller-path-0.1.0.tgz",
+      "integrity": "sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=",
+      "dev": true,
+      "dependencies": {
+        "callsites": "^0.2.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/callsites": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-0.2.0.tgz",
+      "integrity": "sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/chalk": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+      "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
+      "dev": true,
+      "dependencies": {
+        "ansi-styles": "^2.2.1",
+        "escape-string-regexp": "^1.0.2",
+        "has-ansi": "^2.0.0",
+        "strip-ansi": "^3.0.0",
+        "supports-color": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/circular-json": {
+      "version": "0.3.3",
+      "resolved": "https://registry.npmjs.org/circular-json/-/circular-json-0.3.3.tgz",
+      "integrity": "sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==",
+      "deprecated": "CircularJSON is in maintenance only, flatted is its successor.",
+      "dev": true
+    },
+    "node_modules/cli-cursor": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-1.0.2.tgz",
+      "integrity": "sha1-ZNo/fValRBLll5S9Ytw1KV6PKYc=",
+      "dev": true,
+      "dependencies": {
+        "restore-cursor": "^1.0.1"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/cli-width": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.2.0.tgz",
+      "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=",
+      "dev": true
+    },
+    "node_modules/co": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
+      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
+      "dev": true,
+      "engines": {
+        "iojs": ">= 1.0.0",
+        "node": ">= 0.12.0"
+      }
+    },
+    "node_modules/code-point-at": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/coffee-script": {
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
+      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
+      "deprecated": "CoffeeScript on NPM has moved to \"coffeescript\" (no hyphen)",
+      "dev": true,
+      "bin": {
+        "cake": "bin/cake",
+        "coffee": "bin/coffee"
+      },
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    },
+    "node_modules/coffeelint": {
+      "version": "1.16.2",
+      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
+      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
+      "dev": true,
+      "dependencies": {
+        "coffee-script": "~1.11.0",
+        "glob": "^7.0.6",
+        "ignore": "^3.0.9",
+        "optimist": "^0.6.1",
+        "resolve": "^0.6.3",
+        "strip-json-comments": "^1.0.2"
+      },
+      "bin": {
+        "coffeelint": "bin/coffeelint"
+      },
+      "engines": {
+        "node": ">=0.8.0",
+        "npm": ">=1.3.7"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+    },
+    "node_modules/concat-stream": {
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diff --git a/packages/autocomplete-plus/package.json b/packages/autocomplete-plus/package.json
new file mode 100644
index 000000000..a1d6dbcb0
--- /dev/null
+++ b/packages/autocomplete-plus/package.json
@@ -0,0 +1,258 @@
+{
+  "name": "autocomplete-plus",
+  "version": "2.42.6",
+  "main": "./lib/main",
+  "description": "Display possible completions in the editor while typing",
+  "repository": "https://github.com/atom/autocomplete-plus",
+  "license": "MIT",
+  "engines": {
+    "atom": ">=0.189.0 <2.0.0"
+  },
+  "dependencies": {
+    "atom-slick": "^2.0.0",
+    "dompurify": "^2.2.6",
+    "fuzzaldrin": "^2.1.0",
+    "fuzzaldrin-plus": "^0.6.0",
+    "grim": "^2.0.1",
+    "marked": "^4.0.10",
+    "minimatch": "^3.0.3",
+    "selector-kit": "^0.1",
+    "stable": "^0.1.5",
+    "underscore-plus": "^1.6.6"
+  },
+  "devDependencies": {
+    "coffeelint": "^1.9.7",
+    "fs-plus": ">=2.4.0",
+    "standard": "^8.3.0",
+    "temp": ">=0.7.0"
+  },
+  "providedServices": {
+    "autocomplete.watchEditor": {
+      "versions": {
+        "1.0.0": "provideWatchEditor"
+      }
+    }
+  },
+  "consumedServices": {
+    "autocomplete.provider": {
+      "versions": {
+        "1.0.0": "consumeProvider_1",
+        "1.1.0": "consumeProvider_1_1",
+        "2.0.0": "consumeProvider_2",
+        "3.0.0": "consumeProvider_3",
+        "4.0.0": "consumeProvider_4"
+      }
+    },
+    "snippets": {
+      "versions": {
+        "0.1.0": "consumeSnippets"
+      }
+    }
+  },
+  "configSchema": {
+    "enableAutoActivation": {
+      "title": "Show Suggestions On Keystroke",
+      "description": "Suggestions will show as you type if this preference is enabled. If it is disabled, you can still see suggestions by using the keymapping for 'autocomplete-plus:activate' (shown below).",
+      "type": "boolean",
+      "default": true,
+      "order": 1
+    },
+    "autoActivationDelay": {
+      "title": "Delay Before Suggestions Are Shown",
+      "description": "If you are experiencing performance issues when typing, you should try increasing this value to a non-zero number (e.g. 100).",
+      "type": "integer",
+      "default": 0,
+      "order": 2
+    },
+    "maxVisibleSuggestions": {
+      "title": "Maximum Visible Suggestions",
+      "description": "The suggestion list will only show this many suggestions.",
+      "type": "integer",
+      "default": 10,
+      "minimum": 1,
+      "order": 3
+    },
+    "confirmCompletion": {
+      "title": "Keymap For Confirming A Suggestion",
+      "description": "You should use the key(s) indicated here to confirm a suggestion from the suggestion list and have it inserted into the file.",
+      "type": "string",
+      "default": "tab and enter",
+      "enum": [
+        "tab",
+        "enter",
+        "tab and enter",
+        "tab always, enter when suggestion explicitly selected",
+        "none"
+      ],
+      "order": 4
+    },
+    "useCoreMovementCommands": {
+      "title": "Use Core Movement Commands",
+      "description": "Disable this if you want to bind your own keystrokes to move around the suggestion list. You will also need to add definitions to your keymap. See: https://github.com/atom/autocomplete-plus#remapping-movement-commands",
+      "type": "boolean",
+      "default": true,
+      "order": 5
+    },
+    "fileBlacklist": {
+      "title": "File Blacklist",
+      "description": "Suggestions will not be provided for files matching this list, e.g. `*.md` for Markdown files. To blacklist more than one file extension, use comma as a separator, e.g. `*.md, *.txt` (both Markdown and text files).",
+      "type": "array",
+      "default": [
+        ".*"
+      ],
+      "items": {
+        "type": "string"
+      },
+      "order": 6
+    },
+    "scopeBlacklist": {
+      "title": "Scope Blacklist",
+      "description": "Suggestions will not be provided for scopes matching this list. See: http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/",
+      "type": "array",
+      "default": [],
+      "items": {
+        "type": "string"
+      },
+      "order": 7
+    },
+    "includeCompletionsFromAllBuffers": {
+      "title": "Include Completions From All Buffers",
+      "description": "For grammars with no registered provider(s), the default provider will include completions from all buffers, instead of just the buffer you are currently editing.",
+      "type": "boolean",
+      "default": true,
+      "order": 8
+    },
+    "strictMatching": {
+      "title": "Use Strict Matching For Built-In Provider",
+      "description": "Fuzzy searching is performed if this is disabled; if it is enabled, suggestions must begin with the prefix from the current word.",
+      "type": "boolean",
+      "default": false,
+      "order": 9
+    },
+    "minimumWordLength": {
+      "description": "Only autocomplete when you've typed at least this many characters. Note: May not affect external providers.",
+      "type": "integer",
+      "default": 3,
+      "order": 10
+    },
+    "extraWordCharacters": {
+      "description": "Characters to consider part of words for the purpose of autocomplete, even if they are included in the editor.nonWordCharacters setting",
+      "type": "string",
+      "default": "",
+      "order": 10.5
+    },
+    "enableBuiltinProvider": {
+      "title": "Enable Built-In Provider",
+      "description": "The package comes with a built-in provider that will provide suggestions using the words in your current buffer or all open buffers. You will get better suggestions by installing additional autocomplete+ providers. To stop using the built-in provider, disable this option.",
+      "type": "boolean",
+      "default": true,
+      "order": 11
+    },
+    "builtinProviderBlacklist": {
+      "title": "Built-In Provider Blacklist",
+      "description": "Don't use the built-in provider for these selector(s).",
+      "type": "string",
+      "default": ".source.gfm",
+      "order": 12
+    },
+    "backspaceTriggersAutocomplete": {
+      "title": "Allow Backspace To Trigger Autocomplete",
+      "description": "If enabled, typing `backspace` will show the suggestion list if suggestions are available. If disabled, suggestions will not be shown while backspacing.",
+      "type": "boolean",
+      "default": false,
+      "order": 13
+    },
+    "enableAutoConfirmSingleSuggestion": {
+      "title": "Automatically Confirm Single Suggestion",
+      "description": "If enabled, automatically insert suggestion on manual activation with 'autocomplete-plus:activate' when there is only one match.",
+      "type": "boolean",
+      "default": true,
+      "order": 14
+    },
+    "suggestionListFollows": {
+      "title": "Suggestions List Follows",
+      "description": "With 'Cursor' the suggestion list appears at the cursor's position. With 'Word' it appears at the beginning of the word that's being completed.",
+      "type": "string",
+      "default": "Word",
+      "enum": [
+        "Word",
+        "Cursor"
+      ],
+      "order": 15
+    },
+    "suppressActivationForEditorClasses": {
+      "title": "Suppress Activation For Editor Classes",
+      "description": "Don't auto-activate when any of these classes are present in the editor.",
+      "type": "array",
+      "default": [
+        "vim-mode.command-mode",
+        "vim-mode.visual-mode",
+        "vim-mode.operator-pending-mode"
+      ],
+      "items": {
+        "type": "string"
+      },
+      "order": 17
+    },
+    "consumeSuffix": {
+      "title": "Consume suggestion text following the cursor",
+      "description": "Completing a suggestion consumes text following the cursor matching the suffix of the chosen suggestion.",
+      "type": "boolean",
+      "default": true,
+      "order": 18
+    },
+    "useAlternateScoring": {
+      "description": "Prefers runs of consecutive characters, acronyms and start of words. (Experimental)",
+      "type": "boolean",
+      "default": true,
+      "order": 19
+    },
+    "useLocalityBonus": {
+      "description": "Gives words near the cursor position a higher score than those far away",
+      "type": "boolean",
+      "default": true,
+      "order": 20
+    },
+    "enableExtendedUnicodeSupport": {
+      "description": "Identifies non-latin alphabet characters as letters",
+      "type": "boolean",
+      "default": false,
+      "order": 21
+    },
+    "similarSuggestionRemoval": {
+      "description": "Should similar suggestions be removed from the list? If so how to determine they are similar.",
+      "type": "string",
+      "default": "none",
+      "enum": [
+        {
+          "value": "none",
+          "description": "Do not remove similar suggestions"
+        },
+        {
+          "value": "textOrSnippet",
+          "description": "Remove when the insertion text or snippet match"
+        }
+      ],
+      "order": 22
+    },
+    "moveToCancel": {
+      "description": "Moving up when the first item is selected or down when the last item is selected cancels the suggestion list.",
+      "type": "boolean",
+      "default": false,
+      "order": 23
+    }
+  },
+  "standard": {
+    "globals": [
+      "CustomEvent",
+      "HTMLElement",
+      "advanceClock",
+      "atom",
+      "getComputedStyle",
+      "waitsForPromise"
+    ],
+    "ignore": [
+      "**/spec/fixtures/**"
+    ]
+  }
+}
diff --git a/packages/autocomplete-plus/spec/autocomplete-manager-async-spec.js b/packages/autocomplete-plus/spec/autocomplete-manager-async-spec.js
new file mode 100644
index 000000000..3ad44cff8
--- /dev/null
+++ b/packages/autocomplete-plus/spec/autocomplete-manager-async-spec.js
@@ -0,0 +1,114 @@
+/* eslint-env jasmine */
+
+const { waitForAutocomplete, timeoutPromise, conditionPromise } = require('./spec-helper')
+const path = require('path')
+
+describe('Async providers', () => {
+  let editorView, editor, mainModule, autocompleteManager, registration
+
+  beforeEach(async () => {
+    atom.workspace.project.setPaths([path.join(__dirname, 'fixtures')]);
+    jasmine.useRealClock()
+
+    // Set to live completion
+    atom.config.set('autocomplete-plus.enableAutoActivation', true)
+    atom.config.set('editor.fontSize', '16')
+
+    // Set the completion delay
+    atom.config.set('autocomplete-plus.autoActivationDelay', 100)
+
+    let workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+
+    editor = await atom.workspace.open('sample.js')
+
+    await atom.packages.activatePackage('language-javascript')
+
+    // Activate the package
+    mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+
+    await conditionPromise(() => {
+      autocompleteManager = mainModule.autocompleteManager
+      return autocompleteManager
+    })
+  })
+
+  afterEach(() => {
+    if (registration) {
+      registration.dispose()
+    }
+  })
+
+  describe('when an async provider is registered', () => {
+    beforeEach(() => {
+      let testAsyncProvider = {
+        getSuggestions (options) {
+          return new Promise((resolve) => {
+            setTimeout(() => {
+              resolve(
+                [{
+                  text: 'asyncProvided',
+                  replacementPrefix: 'asyncProvided',
+                  rightLabel: 'asyncProvided'
+                }]
+              )
+            }, 10)
+          })
+        },
+        scopeSelector: '.source.js'
+      }
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testAsyncProvider)
+    })
+
+    it('should provide completions when a provider returns a promise that results in an array of suggestions', async () => {
+      editor.moveToBottom()
+      editor.insertText('o')
+
+      await waitForAutocomplete(editor)
+
+      let suggestionListView = autocompleteManager.suggestionList.suggestionListElement
+      expect(suggestionListView.element.querySelector('li .right-label')).toHaveText('asyncProvided')
+    })
+  })
+
+  describe('when a provider takes a long time to provide suggestions', () => {
+    beforeEach(() => {
+      let testAsyncProvider = {
+        scopeSelector: '.source.js',
+        getSuggestions (options) {
+          return new Promise(resolve => {
+            setTimeout(() =>
+              resolve(
+                [{
+                  text: 'asyncProvided',
+                  replacementPrefix: 'asyncProvided',
+                  rightLabel: 'asyncProvided'
+                }]
+              )
+            , 1000)
+          })
+        }
+      }
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testAsyncProvider)
+    })
+
+    it('does not show the suggestion list when it is triggered then no longer needed', async () => {
+      editorView = atom.views.getView(editor)
+
+      editor.moveToBottom()
+      editor.insertText('o')
+
+      // Waiting will kick off the suggestion request
+      editor.insertText('\r')
+      await timeoutPromise(100)
+
+      // Expect nothing because the provider has not come back yet
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+      // Wait til the longass provider comes back
+      await timeoutPromise(1000)
+
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+    })
+  })
+})
diff --git a/packages/autocomplete-plus/spec/autocomplete-manager-autosave-spec.js b/packages/autocomplete-plus/spec/autocomplete-manager-autosave-spec.js
new file mode 100644
index 000000000..5ea405253
--- /dev/null
+++ b/packages/autocomplete-plus/spec/autocomplete-manager-autosave-spec.js
@@ -0,0 +1,109 @@
+'use babel'
+/* eslint-env jasmine */
+
+let temp = require('temp').track()
+import path from 'path'
+import fs from 'fs-plus'
+import { conditionPromise } from './spec-helper'
+
+describe('Autocomplete Manager', () => {
+  let directory
+  let filePath
+  let editorView
+  let editor
+  let mainModule
+  let autocompleteManager
+  let createSuggestionsPromise
+
+  beforeEach(async () => {
+    atom.workspace.project.setPaths([path.join(__dirname, 'fixtures')]);
+    jasmine.useRealClock()
+
+    directory = temp.mkdirSync()
+    let sample = `var quicksort = function () {
+var sort = function(items) {
+  if (items.length <= 1) return items;
+  var pivot = items.shift(), current, left = [], right = [];
+  while(items.length > 0) {
+    current = items.shift();
+    current < pivot ? left.push(current) : right.push(current);
+  }
+  return sort(left).concat(pivot).concat(sort(right));
+};
+
+return sort(Array.apply(this, arguments));
+};
+`
+    filePath = path.join(directory, 'sample.js')
+    fs.writeFileSync(filePath, sample)
+
+    // Enable autosave
+    atom.config.set('autosave.enabled', true)
+
+    // Set to live completion
+    atom.config.set('autocomplete-plus.enableAutoActivation', true)
+    atom.config.set('editor.fontSize', '16')
+
+    let workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+
+    await atom.packages.activatePackage('autosave')
+
+    editor = await atom.workspace.open(filePath)
+    editorView = atom.views.getView(editor)
+
+    await atom.packages.activatePackage('language-javascript')
+
+    // Activate the package
+    mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+
+    await conditionPromise(() =>
+      mainModule && mainModule.autocompleteManager && mainModule.autocompleteManager.ready
+    )
+
+    autocompleteManager = mainModule.autocompleteManager
+    let { displaySuggestions } = autocompleteManager
+
+    const suggestionsPromises = new Set()
+
+    createSuggestionsPromise = function () {
+      return new Promise(resolve => {
+        suggestionsPromises.add(resolve)
+      })
+    }
+
+    spyOn(autocompleteManager, 'displaySuggestions').andCallFake((suggestions, options) => {
+      displaySuggestions(suggestions, options)
+      for (const resolve of suggestionsPromises) {
+        resolve()
+      }
+      suggestionsPromises.clear()
+    })
+  })
+
+  describe('autosave compatibility', () =>
+    it('keeps the suggestion list open while saving', async () => {
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      // Trigger an autocompletion
+      const firstEventPromise = createSuggestionsPromise()
+
+      editor.moveToBottom()
+      editor.moveToBeginningOfLine()
+      editor.insertText('f')
+      await firstEventPromise
+
+      const secondEventPromise = createSuggestionsPromise()
+      editor.save()
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      editor.insertText('u')
+      await secondEventPromise
+
+      editor.save()
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      // Accept suggestion
+      let suggestionListView = autocompleteManager.suggestionList.suggestionListElement
+      atom.commands.dispatch(suggestionListView.element, 'autocomplete-plus:confirm')
+      expect(editor.getBuffer().getLastLine()).toEqual('function')
+    })
+  )
+})
diff --git a/packages/autocomplete-plus/spec/autocomplete-manager-integration-spec.js b/packages/autocomplete-plus/spec/autocomplete-manager-integration-spec.js
new file mode 100644
index 000000000..4562edf18
--- /dev/null
+++ b/packages/autocomplete-plus/spec/autocomplete-manager-integration-spec.js
@@ -0,0 +1,2354 @@
+/* eslint-env jasmine */
+/* eslint-disable no-template-curly-in-string */
+
+const { TextEditor } = require('atom')
+const {
+  conditionPromise,
+  timeoutPromise,
+  triggerAutocompletion,
+  waitForAutocomplete,
+  waitForAutocompleteToDisappear,
+  waitForDeferredSuggestions,
+  buildIMECompositionEvent
+} = require('./spec-helper')
+let temp = require('temp').track()
+const path = require('path')
+
+let NodeTypeText = 3
+
+describe('Autocomplete Manager', () => {
+  let autocompleteManager, editor, editorView, gutterWidth, mainModule, workspaceElement
+
+  let pixelLeftForBufferPosition = (bufferPosition) => {
+    let gutter = editorView.querySelector('.gutter')
+    if (!gutter) {
+      gutter = editorView.shadowRoot.querySelector('.gutter')
+    }
+
+    gutterWidth = gutter.offsetWidth
+    let left = editorView.pixelPositionForBufferPosition(bufferPosition).left
+    left += editorView.offsetLeft
+    left += gutterWidth
+    left += Math.round(editorView.getBoundingClientRect().left)
+    return `${Math.round(left)}px`
+  }
+
+  beforeEach(() => {
+    atom.workspace.project.setPaths([path.join(__dirname, 'fixtures')]);
+    jasmine.useRealClock()
+    gutterWidth = null
+    // Set to live completion
+    atom.config.set('autocomplete-plus.enableAutoActivation', true)
+    atom.config.set('editor.fontSize', '16')
+
+    // Set the completion delay
+    atom.config.set('autocomplete-plus.autoActivationDelay', 100)
+
+    workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+
+    atom.config.set('autocomplete-plus.maxVisibleSuggestions', 10)
+    atom.config.set('autocomplete-plus.consumeSuffix', true)
+  })
+
+  describe('when an external provider is registered', () => {
+    let provider
+
+    beforeEach(async () => {
+      editor = await atom.workspace.open('')
+      editorView = atom.views.getView(editor)
+      mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+      await conditionPromise(() => mainModule.autocompleteManager)
+
+      provider = {
+        scopeSelector: '*',
+        inclusionPriority: 2,
+        excludeLowerPriority: true,
+        getSuggestions ({prefix}) {
+          let list = ['ab', 'abc', 'abcd', 'abcde']
+          return (list.map((text) => ({text})))
+        }
+      }
+      mainModule.consumeProvider(provider, 3)
+    })
+
+    it("calls the provider's onDidInsertSuggestion method when it exists", async () => {
+      provider.onDidInsertSuggestion = jasmine.createSpy()
+
+      triggerAutocompletion(editor, true, 'a')
+      await waitForAutocomplete(editor)
+
+      let suggestion, triggerPosition
+      let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+      atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+
+      expect(provider.onDidInsertSuggestion).toHaveBeenCalled();
+
+      ({editor, triggerPosition, suggestion} = provider.onDidInsertSuggestion.mostRecentCall.args[0])
+      expect(editor).toBe(editor)
+      expect(triggerPosition).toEqual([0, 1])
+      expect(suggestion.text).toBe('ab')
+    })
+
+    it('closes the suggestion list when saving', async () => {
+      let directory = temp.mkdirSync()
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+      editor.insertText('a')
+      await waitForAutocomplete(editor)
+
+      await new Promise((resolve) => {
+        editor.getBuffer().onDidSave(() => {
+          expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+          resolve()
+        })
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        editor.saveAs(path.join(directory, 'spec', 'tmp', 'issue-11.js'))
+      })
+    })
+
+    it('does not show suggestions after a word has been confirmed', async () => {
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      for (let i = 0; i < 'red'.length; i++) { let c = 'red'[i]; editor.insertText(c) }
+      await waitForAutocomplete(editor)
+
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      atom.commands.dispatch(editorView, 'autocomplete-plus:confirm')
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+    })
+
+    it('works after closing one of the copied tabs', async () => {
+      atom.workspace.paneForItem(editor).splitRight({copyActiveItem: true})
+      atom.workspace.getActivePane().destroy()
+
+      editor.insertNewline()
+      editor.insertText('f')
+
+      await waitForAutocomplete(editor)
+
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+    })
+
+    it('closes the suggestion list when entering an empty string (e.g. carriage return)', async () => {
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      editor.insertText('a')
+      await waitForAutocomplete(editor)
+
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      editor.insertText('\r')
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+    })
+
+    it('it refocuses the editor after pressing enter', async () => {
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      editor.insertText('a')
+      await waitForAutocomplete(editor)
+
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      editor.insertText('\n')
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      expect(editorView).toHaveFocus()
+    })
+
+    it('it hides the suggestion list when the user keeps typing', async () => {
+      spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => ['acd', 'ade'].filter((t) => t.startsWith(prefix)).map((t) => ({text: t})))
+
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+      // Trigger an autocompletion
+      editor.moveToBottom()
+      editor.insertText('a')
+      await waitForAutocomplete(editor)
+
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+      editor.insertText('b')
+      await waitForAutocompleteToDisappear(editor)
+    })
+
+    it('does not show the suggestion list when pasting', async () => {
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      editor.insertText('red')
+      await waitForAutocompleteToDisappear(editor)
+    })
+
+    it('only shows for the editor that currently has focus', async () => {
+      let editor2 = atom.workspace.paneForItem(editor).splitRight({copyActiveItem: true}).getActiveItem()
+      let editorView2 = atom.views.getView(editor2)
+      editorView.focus()
+
+      expect(editorView).toHaveFocus()
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+      expect(editorView2).not.toHaveFocus()
+      expect(editorView2.querySelector('.autocomplete-plus')).not.toExist()
+
+      editor.insertText('r')
+
+      expect(editorView).toHaveFocus()
+      expect(editorView2).not.toHaveFocus()
+
+      await waitForAutocomplete(editor)
+
+      expect(editorView).toHaveFocus()
+      expect(editorView2).not.toHaveFocus()
+
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      expect(editorView2.querySelector('.autocomplete-plus')).not.toExist()
+
+      atom.commands.dispatch(editorView, 'autocomplete-plus:confirm')
+
+      expect(editorView).toHaveFocus()
+      expect(editorView2).not.toHaveFocus()
+
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      expect(editorView2.querySelector('.autocomplete-plus')).not.toExist()
+    })
+
+    it('does not display empty suggestions', async () => {
+      spyOn(provider, 'getSuggestions').andCallFake(() => {
+        let list = ['ab', '', 'abcd', null]
+        return (list.map((text) => ({text})))
+      })
+
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      editor.insertText('a')
+      await waitForAutocomplete(editor)
+
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      expect(editorView.querySelectorAll('.autocomplete-plus li')).toHaveLength(2)
+    })
+
+    describe('when the fileBlacklist option is set', () => {
+      beforeEach(() => {
+        atom.config.set('autocomplete-plus.fileBlacklist', ['.*', '*.md'])
+        editor.getBuffer().setPath('blacklisted.md')
+      })
+
+      it('does not show suggestions when working with files that match the blacklist', async () => {
+        editor.insertText('a')
+        await waitForAutocompleteToDisappear(editor)
+      })
+
+      it('caches the blacklist result', async () => {
+        spyOn(path, 'basename').andCallThrough()
+
+        editor.insertText('a')
+        editor.insertText('b')
+        editor.insertText('c')
+
+        await waitForAutocompleteToDisappear(editor)
+        expect(path.basename.callCount).toBe(1)
+      })
+
+      it('shows suggestions when the path is changed to not match the blacklist', async () => {
+        editor.insertText('a')
+
+        await waitForAutocompleteToDisappear(editor)
+        atom.commands.dispatch(editorView, 'autocomplete-plus:cancel')
+
+        editor.getBuffer().setPath('not-blackslisted.txt')
+        editor.insertText('a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        atom.commands.dispatch(editorView, 'autocomplete-plus:cancel')
+
+        editor.getBuffer().setPath('blackslisted.md')
+        editor.insertText('a')
+        await waitForAutocompleteToDisappear(editor)
+      })
+    })
+
+    describe('when filterSuggestions option is true', () => {
+      beforeEach(() => {
+        provider = {
+          scopeSelector: '*',
+          filterSuggestions: true,
+          inclusionPriority: 3,
+          excludeLowerPriority: true,
+
+          getSuggestions ({prefix}) {
+            let list = ['ab', 'abc', 'abcd', 'abcde']
+
+            return (list.map((text) => ({text})))
+          }
+        }
+        mainModule.consumeProvider(provider)
+      })
+
+      it('does not display empty suggestions', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => {
+          let list = ['ab', '', 'abcd', null]
+          return (list.map((text) => ({text})))
+        })
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        editor.insertText('a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        expect(editorView.querySelectorAll('.autocomplete-plus li')).toHaveLength(2)
+      })
+    })
+
+    describe('when the type option has a space in it', () =>
+      it('does not display empty suggestions', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'ab', type: 'local function'}, {text: 'abc', type: ' another ~ function   '}])
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        editor.insertText('a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        let items = editorView.querySelectorAll('.autocomplete-plus li')
+        expect(items).toHaveLength(2)
+        expect(items[0].querySelector('.icon').className).toBe('icon local function')
+        expect(items[1].querySelector('.icon').className).toBe('icon another ~ function')
+      })
+    )
+
+    describe('when the className option has a space in it', () =>
+      it('does not display empty suggestions', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'ab', className: 'local function'}, {text: 'abc', className: ' another  ~ function   '}])
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        editor.insertText('a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        let items = editorView.querySelectorAll('.autocomplete-plus li')
+        expect(items[0].className).toBe('selected local function')
+        expect(items[1].className).toBe('another ~ function')
+      })
+    )
+
+    describe('when multiple cursors are defined', () => {
+      it('autocompletes word when there is only a prefix', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'shift'}])
+
+        editor.getBuffer().insert([0, 0], 's:extra:s')
+        editor.setSelectedBufferRanges([[[0, 1], [0, 1]], [[0, 9], [0, 9]]])
+        triggerAutocompletion(editor, false, 'h')
+
+        await waitForAutocomplete(editor);
+
+        ({ autocompleteManager } = mainModule)
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+        atom.commands.dispatch(editorView, 'autocomplete-plus:confirm')
+
+        expect(editor.lineTextForBufferRow(0)).toBe('shift:extra:shift')
+        expect(editor.getCursorBufferPosition()).toEqual([0, 17])
+        expect(editor.getLastSelection().getBufferRange()).toEqual({
+          start: {
+            row: 0,
+            column: 17
+          },
+          end: {
+            row: 0,
+            column: 17
+          }
+        })
+
+        expect(editor.getSelections().length).toEqual(2)
+      })
+
+      it('cancels the autocomplete when text differs between cursors', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [])
+
+        editor.getBuffer().insert([0, 0], 's:extra:a')
+        editor.setCursorBufferPosition([0, 1])
+        editor.addCursorAtBufferPosition([0, 9])
+        triggerAutocompletion(editor, false, 'h')
+
+        ;({ autocompleteManager } = mainModule)
+        editorView = atom.views.getView(editor)
+        atom.commands.dispatch(editorView, 'autocomplete-plus:confirm')
+
+        expect(editor.lineTextForBufferRow(0)).toBe('sh:extra:ah')
+        expect(editor.getSelections().length).toEqual(2)
+        expect(editor.getSelections()[0].getBufferRange()).toEqual([[0, 2], [0, 2]])
+        expect(editor.getSelections()[1].getBufferRange()).toEqual([[0, 11], [0, 11]])
+
+        await waitForAutocompleteToDisappear(editor)
+      })
+    })
+
+    describe('suppression for editorView classes', () => {
+      beforeEach(() => {
+        atom.config.set(
+          'autocomplete-plus.suppressActivationForEditorClasses',
+          ['vim-mode.command-mode', 'vim-mode . visual-mode', ' vim-mode.operator-pending-mode ', ' ']
+        )
+      })
+
+      it('should show the suggestion list when the suppression list does not match', async () => {
+        editorView.classList.add('vim-mode')
+        editorView.classList.add('insert-mode')
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        triggerAutocompletion(editor)
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      })
+
+      it('should not show the suggestion list when the suppression list does match', async () => {
+        editorView.classList.add('vim-mode')
+        editorView.classList.add('command-mode')
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        triggerAutocompletion(editor)
+        await waitForAutocompleteToDisappear(editor)
+      })
+
+      it('should not show the suggestion list when the suppression list does match', async () => {
+        editorView.classList.add('vim-mode')
+        editorView.classList.add('operator-pending-mode')
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        triggerAutocompletion(editor)
+        await waitForAutocompleteToDisappear(editor)
+      })
+
+      it('should not show the suggestion list when the suppression list does match', async () => {
+        editorView.classList.add('vim-mode')
+        editorView.classList.add('visual-mode')
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        triggerAutocompletion(editor)
+        await waitForAutocompleteToDisappear(editor)
+      })
+
+      it('should show the suggestion list when the suppression list does not match', async () => {
+        editorView.classList.add('vim-mode')
+        editorView.classList.add('some-unforeseen-mode')
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        triggerAutocompletion(editor)
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      })
+
+      it('should show the suggestion list when the suppression list does not match', async () => {
+        editorView.classList.add('command-mode')
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        triggerAutocompletion(editor)
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      })
+    })
+
+    describe('prefix passed to getSuggestions', () => {
+      let prefix = null
+      let suggestionsPromise
+
+      beforeEach(() => {
+        let resolveSuggestionsPromise
+        suggestionsPromise = new Promise(resolve => {
+          resolveSuggestionsPromise = resolve
+        })
+
+        editor.setText('var something = abc')
+        editor.setCursorBufferPosition([0, 10000])
+        spyOn(provider, 'getSuggestions').andCallFake((options) => {
+          prefix = options.prefix
+          resolveSuggestionsPromise()
+          return []
+        })
+      })
+
+      it('calls with word prefix', async () => {
+        editor.insertText('d')
+        await suggestionsPromise
+
+        expect(prefix).toBe('abcd')
+      })
+
+      it('calls with word prefix after punctuation', async () => {
+        editor.insertText('d.okyea')
+        editor.insertText('h')
+        await suggestionsPromise
+
+        expect(prefix).toBe('okyeah')
+      })
+
+      it('calls with word prefix containing a dash', async () => {
+        editor.insertText('-okyea')
+        editor.insertText('h')
+        await suggestionsPromise
+
+        expect(prefix).toBe('abc-okyeah')
+      })
+
+      it('calls with word prefix containing a number', async () => {
+        editor.insertText('4ok')
+        editor.insertText('5')
+        await suggestionsPromise
+
+        expect(prefix).toBe('abc4ok5')
+      })
+
+      it('calls with space character', async () => {
+        editor.insertText(' ')
+        await suggestionsPromise
+
+        expect(prefix).toBe(' ')
+      })
+
+      it('calls with non-word prefix', async () => {
+        editor.insertText(':')
+        editor.insertText(':')
+        await suggestionsPromise
+
+        expect(prefix).toBe('::')
+      })
+
+      it('calls with non-word bracket', async () => {
+        editor.insertText('[')
+        await suggestionsPromise
+
+        expect(prefix).toBe('[')
+      })
+
+      it('calls with dot prefix', async () => {
+        editor.insertText('.')
+        await suggestionsPromise
+
+        expect(prefix).toBe('.')
+      })
+
+      it('calls with prefix after non \\b word break', async () => {
+        editor.insertText('=""')
+        editor.insertText(' ')
+        await suggestionsPromise
+
+        expect(prefix).toBe(' ')
+      })
+
+      it('calls with prefix after non \\b word break', async () => {
+        editor.insertText('?')
+        editor.insertText(' ')
+        await suggestionsPromise
+
+        expect(prefix).toBe(' ')
+      })
+
+      describe('providers using the 4.0 API', () => {
+        it('accounts for word characters of the current language', async () => {
+          let prefix = null
+          const provider = {
+            scopeSelector: '*',
+            inclusionPriority: 2,
+            excludeLowerPriority: true,
+            getSuggestions ({prefix: p}) { prefix = p }
+          }
+
+          mainModule.consumeProvider(provider, 4)
+
+          atom.config.set('editor.nonWordCharacters', '-')
+          editor.insertText(' $foo-$ba')
+          editor.insertText('r')
+          await suggestionsPromise
+
+          expect(prefix).toBe('$bar')
+        })
+
+        it('is an empty string when the cursor does not follow a word character', async () => {
+          let prefix = null
+          const provider = {
+            scopeSelector: '*',
+            inclusionPriority: 2,
+            excludeLowerPriority: true,
+            getSuggestions ({prefix: p}) { prefix = p }
+          }
+
+          mainModule.consumeProvider(provider, 4)
+          editor.insertText(' foo')
+          editor.insertText('.')
+          await suggestionsPromise
+
+          expect(prefix).toBe('')
+        })
+      })
+    })
+
+    describe('when the character entered is not at the cursor position', () => {
+      it('does not show the suggestion list', async () => {
+        editor.setText('some text ok')
+        editor.setCursorBufferPosition([0, 7])
+
+        let buffer = editor.getBuffer()
+        buffer.setTextInRange([[0, 0], [0, 0]], 's')
+        await waitForAutocompleteToDisappear(editor)
+      })
+
+      it('does not hide the suggestion list', async () => {
+        editor.setText(
+          '0\n' +
+          '1\n'
+        )
+        editor.setCursorBufferPosition([2, 0])
+        editor.insertText('2')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        editor.setTextInBufferRange([[0, 0], [0, 0]], '*')
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        editor.setTextInBufferRange([[0, 0], [0, 0]], '\n')
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      })
+    })
+
+    describe('when number of suggestions > maxVisibleSuggestions', () => {
+      beforeEach(() => {
+        atom.config.set('autocomplete-plus.maxVisibleSuggestions', 2)
+      })
+
+      describe('when a suggestion description is not specified', () => {
+        beforeEach(async () => {
+          triggerAutocompletion(editor, true, 'a')
+          await waitForAutocomplete(editor)
+          await waitForDeferredSuggestions(editorView, 4)
+        })
+
+        it('scrolls the list always showing the selected item', async () => {
+          expect(editorView.querySelector('.autocomplete-plus')).toExist()
+          let itemHeight = parseInt(getComputedStyle(editorView.querySelector('.autocomplete-plus li')).height)
+
+          let suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          let scroller = suggestionList.querySelector('.suggestion-list-scroller')
+
+          expect(scroller.scrollTop).toBe(0)
+          atom.commands.dispatch(suggestionList, 'core:move-down')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[1]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(0)
+
+          atom.commands.dispatch(suggestionList, 'core:move-down')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[2]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(itemHeight)
+
+          atom.commands.dispatch(suggestionList, 'core:move-down')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[3]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(itemHeight * 2)
+
+          atom.commands.dispatch(suggestionList, 'core:move-down')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(0)
+
+          atom.commands.dispatch(suggestionList, 'core:move-up')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[3]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(itemHeight * 2)
+
+          atom.commands.dispatch(suggestionList, 'core:move-up')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[2]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(itemHeight * 2)
+
+          atom.commands.dispatch(suggestionList, 'core:move-up')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[1]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(itemHeight)
+
+          atom.commands.dispatch(suggestionList, 'core:move-up')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(0)
+        })
+
+        it('pages up and down when core:page-up and core:page-down are used', () => {
+          let itemHeight = parseInt(getComputedStyle(editorView.querySelector('.autocomplete-plus li')).height)
+          let suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          let scroller = suggestionList.querySelector('.suggestion-list-scroller')
+          expect(scroller.scrollTop).toBe(0)
+
+          atom.commands.dispatch(suggestionList, 'core:page-down')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[2]).toHaveClass('selected')
+
+          atom.commands.dispatch(suggestionList, 'core:page-down')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[3]).toHaveClass('selected')
+
+          atom.commands.dispatch(suggestionList, 'core:page-down')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[3]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(itemHeight * 2)
+
+          atom.commands.dispatch(suggestionList, 'core:page-up')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[1]).toHaveClass('selected')
+
+          atom.commands.dispatch(suggestionList, 'core:page-up')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+
+          atom.commands.dispatch(suggestionList, 'core:page-up')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(0)
+        })
+
+        it('moves to the top and bottom when core:move-to-top and core:move-to-bottom are used', () => {
+          let itemHeight = parseInt(getComputedStyle(editorView.querySelector('.autocomplete-plus li')).height)
+          let suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          let scroller = suggestionList.querySelector('.suggestion-list-scroller')
+          expect(scroller.scrollTop).toBe(0)
+
+          atom.commands.dispatch(suggestionList, 'core:move-to-bottom')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[3]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(itemHeight * 2)
+
+          atom.commands.dispatch(suggestionList, 'core:move-to-bottom')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[3]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(itemHeight * 2)
+
+          atom.commands.dispatch(suggestionList, 'core:move-to-top')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(0)
+
+          atom.commands.dispatch(suggestionList, 'core:move-to-top')
+          expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+          expect(scroller.scrollTop).toBe(0)
+        })
+
+        it('only shows the maxVisibleSuggestions in the suggestion popup', () => {
+          expect(editorView.querySelector('.autocomplete-plus')).toExist()
+          let itemHeight = parseInt(getComputedStyle(editorView.querySelector('.autocomplete-plus li')).height)
+          expect(editorView.querySelectorAll('.autocomplete-plus li')).toHaveLength(4)
+
+          let suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          expect(suggestionList.offsetHeight).toBe(2 * itemHeight)
+          expect(suggestionList.querySelector('.suggestion-list-scroller').style['max-height']).toBe(`${2 * itemHeight}px`)
+        })
+      })
+
+      describe('when a suggestion description is specified', () => {
+        it('shows the maxVisibleSuggestions in the suggestion popup, but with extra height for the description', async () => {
+          spyOn(provider, 'getSuggestions').andCallFake(() => {
+            let list = ['ab', 'abc', 'abcd', 'abcde']
+            return (list.map((text) => ({text, description: `${text} yeah ok`})))
+          })
+
+          triggerAutocompletion(editor, true, 'a')
+          await waitForAutocomplete(editor)
+          await waitForDeferredSuggestions(editorView, 4)
+
+          expect(editorView.querySelector('.autocomplete-plus')).toExist()
+          let itemHeight = parseInt(getComputedStyle(editorView.querySelector('.autocomplete-plus li')).height)
+          expect(editorView.querySelectorAll('.autocomplete-plus li')).toHaveLength(4)
+
+          let suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          let descriptionHeight = parseInt(getComputedStyle(editorView.querySelector('.autocomplete-plus .suggestion-description')).height)
+          expect(suggestionList.offsetHeight).toBe((2 * itemHeight) + descriptionHeight)
+          expect(suggestionList.querySelector('.suggestion-list-scroller').style['max-height']).toBe(`${2 * itemHeight}px`)
+        })
+
+        it('parses markdown in the description', async () => {
+          spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => {
+            let list = [
+              {text: 'ab', descriptionMarkdown: '**mmmmmmmmmmmmmmmmmmmmmmmmmm**'},
+              {text: 'abc', descriptionMarkdown: '**mmmmmmmmmmmmmmmmmmmmmm**'},
+              {text: 'abcd', descriptionMarkdown: '**mmmmmmmmmmmmmmmmmm**'},
+              {text: 'abcde', descriptionMarkdown: '**mmmmmmmmmmmmmm**'}
+            ]
+            return (list.filter((item) => item.text.startsWith(prefix)).map((item) => item))
+          })
+
+          triggerAutocompletion(editor, true, 'a')
+          await waitForAutocomplete(editor)
+          await waitForDeferredSuggestions(editorView, 4)
+
+          let suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          expect(suggestionList).toExist()
+
+          expect(editorView.querySelector('.autocomplete-plus .suggestion-description strong').textContent).toEqual('mmmmmmmmmmmmmmmmmmmmmmmmmm')
+
+          editor.insertText('b')
+          editor.insertText('c')
+          await waitForAutocomplete(editor)
+
+          suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          expect(suggestionList).toExist()
+
+          expect(editorView.querySelector('.autocomplete-plus .suggestion-description strong').textContent).toEqual('mmmmmmmmmmmmmmmmmmmmmm')
+        })
+
+        it('adjusts the width when the description changes', async () => {
+          let listWidth = null
+          spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => {
+            let list = [
+              {text: 'ab', description: 'mmmmmmmmmmmmmmmmmmmmmmmmmm'},
+              {text: 'abc', description: 'mmmmmmmmmmmmmmmmmmmmmm'},
+              {text: 'abcd', description: 'mmmmmmmmmmmmmmmmmm'},
+              {text: 'abcde', description: 'mmmmmmmmmmmmmm'}
+            ]
+            return (list.filter((item) => item.text.startsWith(prefix)).map((item) => item))
+          })
+
+          triggerAutocompletion(editor, true, 'a')
+          await waitForAutocomplete(editor)
+          await waitForDeferredSuggestions(editorView, 4)
+
+          let suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          expect(suggestionList).toExist()
+
+          listWidth = parseInt(suggestionList.style.width)
+          expect(listWidth).toBeGreaterThan(0)
+
+          editor.insertText('b')
+          editor.insertText('c')
+          await waitForAutocomplete(editor)
+
+          suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          expect(suggestionList).toExist()
+
+          let newWidth = parseInt(suggestionList.style.width)
+          expect(newWidth).toBeGreaterThan(0)
+          expect(newWidth).toBeLessThan(listWidth)
+        })
+      })
+    })
+
+    describe('when useCoreMovementCommands is toggled', () => {
+      let [suggestionList] = []
+
+      beforeEach(async () => {
+        triggerAutocompletion(editor, true, 'a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+      })
+
+      it('binds to custom commands when unset, and binds back to core commands when set', () => {
+        atom.commands.dispatch(suggestionList, 'core:move-down')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[1]).toHaveClass('selected')
+
+        atom.config.set('autocomplete-plus.useCoreMovementCommands', false)
+
+        atom.commands.dispatch(suggestionList, 'core:move-down')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[1]).toHaveClass('selected')
+        atom.commands.dispatch(suggestionList, 'autocomplete-plus:move-down')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[2]).toHaveClass('selected')
+
+        atom.config.set('autocomplete-plus.useCoreMovementCommands', true)
+
+        atom.commands.dispatch(suggestionList, 'autocomplete-plus:move-down')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[2]).toHaveClass('selected')
+        atom.commands.dispatch(suggestionList, 'core:move-down')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[3]).toHaveClass('selected')
+      })
+    })
+
+    describe('when useCoreMovementCommands is false', () => {
+      let [suggestionList] = []
+
+      beforeEach(async () => {
+        atom.config.set('autocomplete-plus.useCoreMovementCommands', false)
+        triggerAutocompletion(editor, true, 'a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+      })
+
+      it('responds to all the custom movement commands and to no core commands', () => {
+        atom.commands.dispatch(suggestionList, 'core:move-down')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+
+        atom.commands.dispatch(suggestionList, 'autocomplete-plus:move-down')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[1]).toHaveClass('selected')
+
+        atom.commands.dispatch(suggestionList, 'autocomplete-plus:move-up')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+
+        atom.commands.dispatch(suggestionList, 'autocomplete-plus:page-down')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).not.toHaveClass('selected')
+
+        atom.commands.dispatch(suggestionList, 'autocomplete-plus:page-up')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+
+        atom.commands.dispatch(suggestionList, 'autocomplete-plus:move-to-bottom')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[3]).toHaveClass('selected')
+
+        atom.commands.dispatch(suggestionList, 'autocomplete-plus:move-to-top')
+        expect(editorView.querySelectorAll('.autocomplete-plus li')[0]).toHaveClass('selected')
+      })
+    })
+
+    describe('when match.snippet is used', () => {
+      beforeEach(() => {
+        spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => {
+          let list = ['method(${1:something})', 'method2(${1:something})', 'method3(${1:something})', 'namespace\\\\method4(${1:something})']
+          return (list.map((snippet) => ({snippet, replacementPrefix: prefix})))
+        })
+      })
+
+      describe('when the snippets package is enabled', () => {
+        beforeEach(() => atom.packages.activatePackage('snippets'))
+
+        it('displays the snippet without the `${1:}` in its own class', async () => {
+          triggerAutocompletion(editor, true, 'm')
+          await waitForAutocomplete(editor)
+
+          let wordElement = editorView.querySelector('.autocomplete-plus span.word')
+          expect(wordElement.textContent).toBe('method(something)')
+          expect(wordElement.querySelector('.snippet-completion').textContent).toBe('something')
+
+          let wordElements = editorView.querySelectorAll('.autocomplete-plus span.word')
+          expect(wordElements).toHaveLength(4)
+        })
+
+        it('accepts the snippet when autocomplete-plus:confirm is triggered', async () => {
+          triggerAutocompletion(editor, true, 'm')
+          await waitForAutocomplete(editor)
+
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+          expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+          expect(editor.getSelectedText()).toBe('something')
+        })
+
+        it('escapes \\ in list to match snippet behavior', async () => {
+          triggerAutocompletion(editor, true, 'm')
+          await waitForAutocomplete(editor)
+
+          // Value in list
+          let wordElements = editorView.querySelectorAll('.autocomplete-plus span.word')
+          expect(wordElements).toHaveLength(4)
+          expect(wordElements[3].textContent).toBe('namespace\\method4(something)')
+
+          // Select last item
+          atom.commands.dispatch(editorView, 'core:move-up')
+
+          // Value in editor
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+          expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+          expect(editor.getText()).toBe('namespace\\method4(something)')
+        })
+      })
+    })
+
+    describe('when the matched prefix is highlighted', () => {
+      it('highlights the prefix of the word in the suggestion list', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => [{text: 'items', replacementPrefix: prefix}])
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        editor.moveToBottom()
+        editor.insertText('i')
+        editor.insertText('e')
+        editor.insertText('m')
+
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+        let word = editorView.querySelector('.autocomplete-plus li span.word')
+        expect(word.childNodes).toHaveLength(5)
+        expect(word.childNodes[0]).toHaveClass('character-match')
+        expect(word.childNodes[1].nodeType).toBe(NodeTypeText)
+        expect(word.childNodes[2]).toHaveClass('character-match')
+        expect(word.childNodes[3]).toHaveClass('character-match')
+        expect(word.childNodes[4].nodeType).toBe(NodeTypeText)
+      })
+
+      it('highlights repeated characters in the prefix', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => [{text: 'apply', replacementPrefix: prefix}])
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        editor.moveToBottom()
+        editor.insertText('a')
+        editor.insertText('p')
+        editor.insertText('p')
+
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+        let word = editorView.querySelector('.autocomplete-plus li span.word')
+        expect(word.childNodes).toHaveLength(4)
+        expect(word.childNodes[0]).toHaveClass('character-match')
+        expect(word.childNodes[1]).toHaveClass('character-match')
+        expect(word.childNodes[2]).toHaveClass('character-match')
+        expect(word.childNodes[3].nodeType).toBe(3) // text
+        expect(word.childNodes[3].textContent).toBe('ly')
+      })
+
+      describe('when the prefix does not match the word', () => {
+        it('does not render any character-match spans', async () => {
+          spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => [{text: 'omgnope', replacementPrefix: prefix}])
+
+          editor.moveToBottom()
+          editor.insertText('x')
+          editor.insertText('y')
+          editor.insertText('z')
+
+          await waitForAutocomplete(editor)
+
+          expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+          let characterMatches = editorView.querySelectorAll('.autocomplete-plus li span.word .character-match')
+          let text = editorView.querySelector('.autocomplete-plus li span.word').textContent
+          expect(characterMatches).toHaveLength(0)
+          expect(text).toBe('omgnope')
+        })
+
+        describe('when the snippets package is enabled', () => {
+          beforeEach(() => atom.packages.activatePackage('snippets'))
+
+          it('does not highlight the snippet html; ref issue 301', async () => {
+            spyOn(provider, 'getSuggestions').andCallFake(() => [{snippet: 'ab(${1:c})c'}])
+
+            editor.moveToBottom()
+            editor.insertText('c')
+            await waitForAutocomplete(editor)
+
+            let word = editorView.querySelector('.autocomplete-plus li span.word')
+            let charMatch = editorView.querySelector('.autocomplete-plus li span.word .character-match')
+            expect(word.textContent).toBe('ab(c)c')
+            expect(charMatch.textContent).toBe('c')
+            expect(charMatch.parentNode).toHaveClass('snippet-completion')
+          })
+
+          it('does not highlight the snippet html when highlight beginning of the word', async () => {
+            spyOn(provider, 'getSuggestions').andCallFake(() => [{snippet: 'abcde(${1:e}, ${1:f})f'}])
+
+            editor.moveToBottom()
+            editor.insertText('c')
+            editor.insertText('e')
+            editor.insertText('f')
+            await waitForAutocomplete(editor)
+
+            let word = editorView.querySelector('.autocomplete-plus li span.word')
+            expect(word.textContent).toBe('abcde(e, f)f')
+
+            let charMatches = editorView.querySelectorAll('.autocomplete-plus li span.word .character-match')
+            expect(charMatches[0].textContent).toBe('c')
+            expect(charMatches[0].parentNode).toHaveClass('word')
+            expect(charMatches[1].textContent).toBe('e')
+            expect(charMatches[1].parentNode).toHaveClass('word')
+            expect(charMatches[2].textContent).toBe('f')
+            expect(charMatches[2].parentNode).toHaveClass('snippet-completion')
+          })
+        })
+      })
+    })
+
+    describe('when a replacementPrefix is not specified', () => {
+      beforeEach(() => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'something'}])
+      })
+
+      it('replaces with the default input prefix', async () => {
+        editor.insertText('abc')
+        triggerAutocompletion(editor, false, 'm')
+        await waitForAutocomplete(editor)
+
+        expect(editor.getText()).toBe('abcm')
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+        atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+        expect(editor.getText()).toBe('something')
+      })
+
+      it('does not replace non-word prefixes with the chosen suggestion', async () => {
+        editor.insertText('abc')
+        editor.insertText('.')
+        await waitForAutocomplete(editor)
+
+        expect(editor.getText()).toBe('abc.')
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+        atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+        expect(editor.getText()).toBe('abc.something')
+      })
+
+      describe('providers using the 4.0 API', () => {
+        it('replaces the entire prefix by default, regardless of the characters it contains', async () => {
+          atom.config.set('editor.nonWordCharacters', '-')
+          provider = {
+            scopeSelector: '*',
+            inclusionPriority: 100,
+            excludeLowerPriority: true,
+            getSuggestions ({prefix}) {
+              return [{
+                text: '$food'
+              }]
+            }
+          }
+          mainModule.consumeProvider(provider, 4)
+
+          editor.setText('')
+          editor.insertText('$food $fo')
+          editor.insertText('o')
+          await waitForAutocomplete(editor)
+
+          expect(editorView.querySelector('.autocomplete-plus')).toExist()
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+          expect(editor.getText()).toBe('$food $food')
+        })
+      })
+    })
+
+    describe('when a replacementPrefix is not specified, but updated multiple times', () => {
+      // First test checks if suggestion did not have replacementPrefix, isPrefixModified is set.
+      // Second test checks that reused suggestion will still be selected with different prefix.
+
+      // Mutable suggestion
+      let suggestion = {text: 'something'}
+
+      beforeEach(() => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [suggestion])
+      })
+
+      it('adds isPrefixModified the first time suggestion is shown', async () => {
+        editor.insertText('so')
+        triggerAutocompletion(editor, false, 'm')
+        await waitForAutocomplete(editor)
+
+        let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+        atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+        expect(editor.getText()).toBe('something')
+        expect(suggestion.replacementPrefix).toBe('som')
+        expect(suggestion.isPrefixModified).toBe(true)
+      })
+
+      it('updates replacementPrefix when returning the same suggestion', async () => {
+        editor.insertText('some')
+        triggerAutocompletion(editor, false, 't')
+        await waitForAutocomplete(editor)
+
+        let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+        atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+        expect(editor.getText()).toBe('something')
+        expect(suggestion.replacementPrefix).toBe('somet')
+        expect(suggestion.isPrefixModified).toBe(true)
+      })
+    })
+
+    describe("when autocomplete-plus.suggestionListFollows is 'Cursor'", () => {
+      beforeEach(() => {
+        atom.config.set('autocomplete-plus.suggestionListFollows', 'Cursor')
+      })
+
+      it('places the suggestion list at the cursor', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ab', leftLabel: 'void'}, {text: 'abc', leftLabel: 'void'}])
+
+        editor.insertText('omghey ab')
+        triggerAutocompletion(editor, false, 'c')
+        await waitForAutocomplete(editor)
+
+        let overlayElement = editorView.querySelector('.autocomplete-plus')
+        expect(overlayElement).toExist()
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 10]))
+
+        let suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+        expect(suggestionList.style['margin-left']).toBeFalsy()
+      })
+
+      it('closes the suggestion list if the user keeps typing', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => ['acd', 'ade'].filter((t) => t.startsWith(prefix)).map((t) => ({text: t})))
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        // Trigger an autocompletion
+        editor.moveToBottom()
+        editor.insertText('a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+        editor.insertText('b')
+        await waitForAutocompleteToDisappear(editor)
+      })
+
+      it('keeps the suggestion list visible if the user keeps typing', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => ['acd', 'ade'].filter((t) => t.startsWith(prefix)).map((t) => ({text: t})))
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        // Trigger an autocompletion
+        editor.moveToBottom()
+        editor.insertText('a')
+        await waitForAutocomplete(editor)
+
+        editor.insertText('c')
+        await waitForAutocomplete(editor)
+      })
+    })
+
+    describe("when autocomplete-plus.suggestionListFollows is 'Word'", () => {
+      beforeEach(() => {
+        atom.config.set('autocomplete-plus.suggestionListFollows', 'Word')
+      })
+
+      it('opens to the correct position, and correctly closes on cancel', async () => {
+        editor.insertText('xxxxxxxxxxx ab')
+        triggerAutocompletion(editor, false, 'c')
+        await waitForAutocomplete(editor)
+
+        let overlayElement = editorView.querySelector('.autocomplete-plus')
+        expect(overlayElement).toExist()
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 12]))
+      })
+
+      it('displays the suggestion list taking into account the passed back replacementPrefix', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(options => [{text: '::before', replacementPrefix: '::', leftLabel: 'void'}])
+
+        editor.insertText('xxxxxxxxxxx ab:')
+        triggerAutocompletion(editor, false, ':')
+        await waitForAutocomplete(editor)
+
+        let overlayElement = editorView.querySelector('.autocomplete-plus')
+        expect(overlayElement).toExist()
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 14]))
+      })
+
+      it('displays the suggestion list with a negative margin to align the prefix with the word-container', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ab', leftLabel: 'void'}, {text: 'abc', leftLabel: 'void'}])
+
+        editor.insertText('omghey ab')
+        triggerAutocompletion(editor, false, 'c')
+        await waitForAutocomplete(editor)
+
+        let suggestionList = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+        let wordContainer = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list .word-container')
+        let marginLeft = parseInt(suggestionList.style['margin-left'])
+        expect(Math.abs(wordContainer.offsetLeft + marginLeft)).toBeLessThan(2)
+      })
+
+      it('keeps the suggestion list planted at the beginning of the prefix when typing', async () => {
+        let overlayElement = null
+        // Lots of x's to keep the margin offset away from the left of the window
+        // See https://github.com/atom/autocomplete-plus/issues/399
+        editor.insertText('xxxxxxxxxx xx')
+        editor.insertText(' ')
+        await waitForAutocomplete(editor)
+
+        overlayElement = editorView.querySelector('.autocomplete-plus')
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 14]))
+        editor.insertText('a')
+        await waitForAutocomplete(editor)
+
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 14]))
+
+        editor.insertText('b')
+        await waitForAutocomplete(editor)
+
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 14]))
+
+        editor.backspace()
+        editor.backspace()
+        await waitForAutocomplete(editor)
+
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 14]))
+
+        editor.backspace()
+        await waitForAutocomplete(editor)
+
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 12]))
+
+        editor.insertText(' ')
+        editor.insertText('a')
+        editor.insertText('b')
+        editor.insertText('c')
+        await waitForAutocomplete(editor)
+
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 14]))
+      })
+
+      it('when broken by a non-word character, the suggestion list is positioned at the beginning of the new word', async () => {
+        let overlayElement = null
+        editor.insertText('xxxxxxxxxxx')
+        editor.insertText(' abc')
+        editor.insertText('d')
+        await waitForAutocomplete(editor)
+
+        overlayElement = editorView.querySelector('.autocomplete-plus')
+
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 12]))
+
+        editor.insertText(' ')
+        editor.insertText('a')
+        editor.insertText('b')
+        await waitForAutocomplete(editor)
+
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 17]))
+
+        editor.backspace()
+        editor.backspace()
+        editor.backspace()
+        await waitForAutocomplete(editor)
+
+        expect(overlayElement.style.left).toBe(pixelLeftForBufferPosition([0, 12]))
+      })
+    })
+
+    describe('accepting suggestions', () => {
+      beforeEach(() => {
+        editor.setText('ok then ')
+        editor.setCursorBufferPosition([0, 20])
+      })
+
+      it('hides the suggestions list when a suggestion is confirmed', async () => {
+        triggerAutocompletion(editor, false, 'a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+        // Accept suggestion
+        let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+        atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      })
+
+      describe('when the replacementPrefix is empty', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'someMethod()', replacementPrefix: ''}])
+        })
+
+        it('will insert the text without replacing anything', async () => {
+          editor.insertText('a')
+          triggerAutocompletion(editor, false, '.')
+          await waitForAutocomplete(editor)
+
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+
+          expect(editor.getText()).toBe('ok then a.someMethod()')
+        })
+      })
+
+      describe('when the alternate keyboard integration is used', () => {
+        beforeEach(() => atom.config.set('autocomplete-plus.confirmCompletion', 'tab always, enter when suggestion explicitly selected'))
+
+        it('inserts the word on tab and moves the cursor to the end of the word', async () => {
+          triggerAutocompletion(editor, false, 'a')
+          await waitForAutocomplete(editor)
+
+          let key = atom.keymaps.constructor.buildKeydownEvent('tab', {target: document.activeElement})
+          atom.keymaps.handleKeyboardEvent(key)
+
+          expect(editor.getText()).toBe('ok then ab')
+
+          let bufferPosition = editor.getCursorBufferPosition()
+          expect(bufferPosition.row).toEqual(0)
+          expect(bufferPosition.column).toEqual(10)
+        })
+
+        it('does not insert the word on enter', async () => {
+          triggerAutocompletion(editor, false, 'a')
+          await waitForAutocomplete(editor)
+
+          let key = atom.keymaps.constructor.buildKeydownEvent('enter', {keyCode: 13, target: document.activeElement})
+          atom.keymaps.handleKeyboardEvent(key)
+          expect(editor.getText()).toBe('ok then a\n')
+        })
+
+        it('inserts the word on enter after the selection has been changed and moves the cursor to the end of the word', async () => {
+          triggerAutocompletion(editor, false, 'a')
+          await waitForAutocomplete(editor)
+
+          editorView = atom.views.getView(editor)
+          atom.commands.dispatch(editorView, 'core:move-down')
+          let key = atom.keymaps.constructor.buildKeydownEvent('enter', {keyCode: 13, target: document.activeElement})
+          atom.keymaps.handleKeyboardEvent(key)
+
+          expect(editor.getText()).toBe('ok then abc')
+
+          let bufferPosition = editor.getCursorBufferPosition()
+          expect(bufferPosition.row).toEqual(0)
+          expect(bufferPosition.column).toEqual(11)
+        })
+      })
+
+      describe('when tab is used to accept suggestions', () => {
+        beforeEach(() => atom.config.set('autocomplete-plus.confirmCompletion', 'tab'))
+
+        it('inserts the word and moves the cursor to the end of the word', async () => {
+          triggerAutocompletion(editor, false, 'a')
+          await waitForAutocomplete(editor)
+
+          let key = atom.keymaps.constructor.buildKeydownEvent('tab', {target: document.activeElement})
+          atom.keymaps.handleKeyboardEvent(key)
+
+          expect(editor.getText()).toBe('ok then ab')
+
+          let bufferPosition = editor.getCursorBufferPosition()
+          expect(bufferPosition.row).toEqual(0)
+          expect(bufferPosition.column).toEqual(10)
+        })
+
+        it('does not insert the word when enter completion not enabled', async () => {
+          triggerAutocompletion(editor, false, 'a')
+          await waitForAutocomplete(editor)
+
+          let key = atom.keymaps.constructor.buildKeydownEvent('enter', {keyCode: 13, target: document.activeElement})
+          atom.keymaps.handleKeyboardEvent(key)
+          expect(editor.getText()).toBe('ok then a\n')
+        })
+      })
+
+      describe('when enter is used to accept suggestions', () => {
+        beforeEach(() => atom.config.set('autocomplete-plus.confirmCompletion', 'enter'))
+
+        it('inserts the word and moves the cursor to the end of the word', async () => {
+          triggerAutocompletion(editor, false, 'a')
+          await waitForAutocomplete(editor)
+
+          let key = atom.keymaps.constructor.buildKeydownEvent('enter', {target: document.activeElement})
+          atom.keymaps.handleKeyboardEvent(key)
+
+          expect(editor.getText()).toBe('ok then ab')
+
+          let bufferPosition = editor.getCursorBufferPosition()
+          expect(bufferPosition.row).toEqual(0)
+          expect(bufferPosition.column).toEqual(10)
+        })
+
+        it('does not insert the word when tab completion not enabled', async () => {
+          triggerAutocompletion(editor, false, 'a')
+          await waitForAutocomplete(editor)
+
+          let key = atom.keymaps.constructor.buildKeydownEvent('tab', {keyCode: 13, target: document.activeElement})
+          atom.keymaps.handleKeyboardEvent(key)
+          expect(editor.getText()).toBe('ok then a ')
+        })
+      })
+
+      describe('when a suffix of the replacement matches the text after the cursor', () => {
+        it('overwrites that existing text with the replacement', async () => {
+          spyOn(provider, 'getSuggestions').andCallFake(() => [
+            {text: 'oneomgtwo', replacementPrefix: 'one'}
+          ])
+
+          editor.setText('ontwothree')
+          editor.setCursorBufferPosition([0, 2])
+          triggerAutocompletion(editor, false, 'e')
+          await waitForAutocomplete(editor)
+
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+
+          expect(editor.getText()).toBe('oneomgtwothree')
+        })
+
+        it('does not overwrite any text if the "consumeSuffix" setting is disabled', async () => {
+          spyOn(provider, 'getSuggestions').andCallFake(() => [
+            {text: 'oneomgtwo', replacementPrefix: 'one'}
+          ])
+
+          atom.config.set('autocomplete-plus.consumeSuffix', false)
+
+          editor.setText('ontwothree')
+          editor.setCursorBufferPosition([0, 2])
+          triggerAutocompletion(editor, false, 'e')
+          await waitForAutocomplete(editor)
+
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+
+          expect(editor.getText()).toBe('oneomgtwotwothree')
+        })
+
+        it('does not overwrite non-word characters', async () => {
+          spyOn(provider, 'getSuggestions').andCallFake(() => [
+            {text: 'oneomgtwo()', replacementPrefix: 'one'}
+          ])
+
+          editor.setText('(on)three')
+          editor.setCursorBufferPosition([0, 3])
+          triggerAutocompletion(editor, false, 'e')
+          await waitForAutocomplete(editor)
+
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+
+          expect(editor.getText()).toBe('(oneomgtwo())three')
+        })
+      })
+
+      describe('when the cursor suffix does not match the replacement', () => {
+        beforeEach(() =>
+          spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'oneomgTwo', replacementPrefix: 'one'}]))
+
+        it('replaces the suffix with the replacement', async () => {
+          editor.setText('ontwothree')
+          editor.setCursorBufferPosition([0, 2])
+          triggerAutocompletion(editor, false, 'e')
+          await waitForAutocomplete(editor)
+
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+
+          expect(editor.getText()).toBe('oneomgTwotwothree')
+        })
+      })
+    })
+
+    describe('when auto-activation is disabled', () => {
+      beforeEach(() => {
+        atom.config.set('autocomplete-plus.enableAutoActivation', false)
+      })
+
+      it('does not show suggestions after a delay', async () => {
+        triggerAutocompletion(editor)
+        await timeoutPromise(100)
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      })
+
+      it('shows suggestions when explicitly triggered', async () => {
+        triggerAutocompletion(editor)
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        atom.commands.dispatch(editorView, 'autocomplete-plus:activate')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      })
+
+      it('stays open when typing', async () => {
+        triggerAutocompletion(editor, false, 'a')
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        atom.commands.dispatch(editorView, 'autocomplete-plus:activate')
+        await waitForAutocomplete(editor)
+
+        editor.insertText('b')
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      })
+
+      it('accepts the suggestion if there is one', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'omgok'}])
+
+        triggerAutocompletion(editor)
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        atom.commands.dispatch(editorView, 'autocomplete-plus:activate')
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        expect(editor.getText()).toBe('omgok')
+      })
+
+      it('does not accept the suggestion if the event detail is activatedManually: false', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'omgok'}])
+
+        triggerAutocompletion(editor)
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        atom.commands.dispatch(editorView, 'autocomplete-plus:activate', {activatedManually: false})
+        await waitForAutocomplete(editor)
+      })
+
+      it('does not accept the suggestion if auto-confirm single suggestion is disabled', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'omgok'}])
+
+        triggerAutocompletion(editor)
+        await timeoutPromise(100)
+
+        atom.config.set('autocomplete-plus.enableAutoConfirmSingleSuggestion', false)
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        atom.commands.dispatch(editorView, 'autocomplete-plus:activate')
+        await waitForAutocomplete(editor)
+      })
+
+      it('includes the correct value for activatedManually when explicitly triggered', async () => {
+        let receivedOptions
+        spyOn(provider, 'getSuggestions').andCallFake((options) => {
+          receivedOptions = options
+          return [{text: 'omgok'}, {text: 'ahgok'}]
+        })
+
+        triggerAutocompletion(editor)
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        atom.commands.dispatch(editorView, 'autocomplete-plus:activate')
+        await waitForAutocomplete(editor)
+
+        expect(receivedOptions).toBeDefined()
+        expect(receivedOptions.activatedManually).toBe(true)
+      })
+
+      it('does not auto-accept a single suggestion when filtering', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(({prefix}) => {
+          let list = []
+          if ('a'.indexOf(prefix) === 0) { list.push('a') }
+          if ('abc'.indexOf(prefix) === 0) { list.push('abc') }
+          return (list.map((t) => ({text: t})))
+        })
+
+        editor.insertText('a')
+        atom.commands.dispatch(editorView, 'autocomplete-plus:activate')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelectorAll('.autocomplete-plus li')).toHaveLength(2)
+
+        editor.insertText('b')
+        await waitForAutocomplete(editor)
+      })
+    })
+
+    describe('when the replacementPrefix doesnt match the actual prefix', () => {
+      describe('when snippets are not used', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'something', replacementPrefix: 'bcm'}])
+        })
+
+        it('only replaces the suggestion at cursors whos prefix matches the replacementPrefix', async () => {
+          editor.setText(`abc abc
+def`
+          )
+          editor.setCursorBufferPosition([0, 3])
+          editor.addCursorAtBufferPosition([0, 7])
+          editor.addCursorAtBufferPosition([1, 3])
+          triggerAutocompletion(editor, false, 'm')
+          await waitForAutocomplete(editor)
+
+          expect(editorView.querySelector('.autocomplete-plus')).toExist()
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+          expect(editor.getText()).toBe(`asomething asomething
+defm`
+          )
+        })
+      })
+
+      describe('when snippets are used', () => {
+        beforeEach(async () => {
+          spyOn(provider, 'getSuggestions').andCallFake(() => [{snippet: 'ok(${1:omg})', replacementPrefix: 'bcm'}])
+          await atom.packages.activatePackage('snippets')
+        })
+
+        it('only replaces the suggestion at cursors whos prefix matches the replacementPrefix', async () => {
+          editor.setText(`abc abc
+def`
+          )
+          editor.setCursorBufferPosition([0, 3])
+          editor.addCursorAtBufferPosition([0, 7])
+          editor.addCursorAtBufferPosition([1, 3])
+          triggerAutocompletion(editor, false, 'm')
+          await waitForAutocomplete(editor)
+
+          expect(editorView.querySelector('.autocomplete-plus')).toExist()
+          let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+          atom.commands.dispatch(suggestionListView, 'autocomplete-plus:confirm')
+          expect(editor.getText()).toBe(`aok(omg) aok(omg)
+defm`
+          )
+        })
+      })
+    })
+
+    describe('select-previous event', () => {
+      it('selects the previous item in the list', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'ab'}, {text: 'abc'}, {text: 'abcd'}])
+
+        triggerAutocompletion(editor, false, 'a')
+        await waitForAutocomplete(editor)
+        let items = editorView.querySelectorAll('.autocomplete-plus li')
+        expect(items[0]).toHaveClass('selected')
+        expect(items[1]).not.toHaveClass('selected')
+        expect(items[2]).not.toHaveClass('selected')
+
+        // Select previous item
+        atom.commands.dispatch(editorView, 'core:move-up')
+
+        items = editorView.querySelectorAll('.autocomplete-plus li')
+        expect(items[0]).not.toHaveClass('selected')
+        expect(items[1]).not.toHaveClass('selected')
+        expect(items[2]).toHaveClass('selected')
+      })
+
+      it('closes the autocomplete when up arrow pressed when only one item displayed', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(({prefix}) =>
+          [{text: 'quicksort'}, {text: 'quack'}].filter(val => val.text.startsWith(prefix))
+        )
+
+        editor.insertText('q')
+        editor.insertText('u')
+        await waitForAutocomplete(editor)
+
+        // two items displayed, should not close
+        atom.commands.dispatch(editorView, 'core:move-up')
+        await timeoutPromise(1)
+
+        let autocomplete = editorView.querySelector('.autocomplete-plus')
+        expect(autocomplete).toExist()
+
+        editor.insertText('a')
+        await waitForAutocomplete(editor)
+
+        autocomplete = editorView.querySelector('.autocomplete-plus')
+        expect(autocomplete).toExist()
+
+        // one item displayed, should close
+        atom.commands.dispatch(editorView, 'core:move-up')
+        await timeoutPromise(1)
+
+        autocomplete = editorView.querySelector('.autocomplete-plus')
+        expect(autocomplete).not.toExist()
+      })
+
+      it('does not close the autocomplete when up arrow pressed with multiple items displayed but triggered on one item', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(({prefix}) =>
+          [{text: 'quicksort'}, {text: 'quack'}].filter(val => val.text.startsWith(prefix))
+        )
+
+        editor.insertText('q')
+        editor.insertText('u')
+        editor.insertText('a')
+        await waitForAutocomplete(editor)
+
+        editor.backspace()
+        await waitForAutocomplete(editor)
+
+        let autocomplete = editorView.querySelector('.autocomplete-plus')
+        expect(autocomplete).toExist()
+
+        atom.commands.dispatch(editorView, 'core:move-up')
+
+        autocomplete = editorView.querySelector('.autocomplete-plus')
+        expect(autocomplete).toExist()
+      })
+    })
+
+    describe('select-next event', () => {
+      beforeEach(() => {
+      })
+
+      it('selects the next item in the list', async () => {
+        triggerAutocompletion(editor, false, 'a')
+        await waitForAutocomplete(editor)
+
+        let items = editorView.querySelectorAll('.autocomplete-plus li')
+        expect(items[0]).toHaveClass('selected')
+        expect(items[1]).not.toHaveClass('selected')
+        expect(items[2]).not.toHaveClass('selected')
+
+        // Select next item
+        atom.commands.dispatch(editorView, 'core:move-down')
+
+        items = editorView.querySelectorAll('.autocomplete-plus li')
+        expect(items[0]).not.toHaveClass('selected')
+        expect(items[1]).toHaveClass('selected')
+        expect(items[2]).not.toHaveClass('selected')
+      })
+
+      it('wraps to the first item when triggered at the end of the list', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'ab'}, {text: 'abc'}, {text: 'abcd'}])
+
+        triggerAutocompletion(editor, false, 'a')
+        await waitForAutocomplete(editor)
+
+        let items = editorView.querySelectorAll('.autocomplete-plus li')
+        expect(items[0]).toHaveClass('selected')
+        expect(items[1]).not.toHaveClass('selected')
+        expect(items[2]).not.toHaveClass('selected')
+
+        let suggestionListView = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list')
+        items = editorView.querySelectorAll('.autocomplete-plus li')
+
+        atom.commands.dispatch(suggestionListView, 'core:move-down')
+        expect(items[1]).toHaveClass('selected')
+
+        atom.commands.dispatch(suggestionListView, 'core:move-down')
+        expect(items[2]).toHaveClass('selected')
+
+        atom.commands.dispatch(suggestionListView, 'core:move-down')
+        expect(items[0]).toHaveClass('selected')
+      })
+    })
+
+    describe('label rendering', () => {
+      describe('when no labels are specified', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok'}])
+        })
+
+        it('displays the text in the suggestion', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+          let iconContainer = editorView.querySelector('.autocomplete-plus li .icon-container')
+          let leftLabel = editorView.querySelector('.autocomplete-plus li .right-label')
+          let rightLabel = editorView.querySelector('.autocomplete-plus li .right-label')
+
+          expect(iconContainer.childNodes).toHaveLength(0)
+          expect(leftLabel.childNodes).toHaveLength(0)
+          expect(rightLabel.childNodes).toHaveLength(0)
+        })
+      })
+
+      describe('when `type` is specified', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', type: 'omg'}])
+        })
+
+        it('displays an icon in the icon-container', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let icon = editorView.querySelector('.autocomplete-plus li .icon-container .icon')
+          expect(icon.textContent).toBe('o')
+        })
+      })
+
+      describe('when the `type` specified has a default icon', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', type: 'snippet'}])
+        })
+
+        it('displays the default icon in the icon-container', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let icon = editorView.querySelector('.autocomplete-plus li .icon-container .icon i')
+          expect(icon).toHaveClass('icon-move-right')
+        })
+      })
+
+      describe('when `type` is an empty string', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', type: ''}])
+        })
+
+        it('does not display an icon in the icon-container', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let iconContainer = editorView.querySelector('.autocomplete-plus li .icon-container')
+          expect(iconContainer.childNodes).toHaveLength(0)
+        })
+      })
+
+      describe('when `iconHTML` is specified', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', iconHTML: '<i class="omg"></i>'}])
+        })
+
+        it('displays an icon in the icon-container', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let icon = editorView.querySelector('.autocomplete-plus li .icon-container .icon .omg')
+          expect(icon).toExist()
+        })
+      })
+
+      describe('when `iconHTML` is false', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', type: 'something', iconHTML: false}])
+        })
+
+        it('does not display an icon in the icon-container', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let iconContainer = editorView.querySelector('.autocomplete-plus li .icon-container')
+          expect(iconContainer.childNodes).toHaveLength(0)
+        })
+      })
+
+      describe('when `iconHTML` is not a string and a `type` is specified', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', type: 'something', iconHTML: true}])
+        })
+
+        it('displays the default icon in the icon-container', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let icon = editorView.querySelector('.autocomplete-plus li .icon-container .icon')
+          expect(icon.textContent).toBe('s')
+        })
+      })
+
+      describe('when `iconHTML` is not a string and no type is specified', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', iconHTML: true}])
+        })
+
+        it('it does not display an icon', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let iconContainer = editorView.querySelector('.autocomplete-plus li .icon-container')
+          expect(iconContainer.childNodes).toHaveLength(0)
+        })
+      })
+
+      describe('when `rightLabel` is specified', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', rightLabel: '<i class="something">sometext</i>'}])
+        })
+
+        it('displays the text in the suggestion', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let label = editorView.querySelector('.autocomplete-plus li .right-label')
+          expect(label).toHaveText('<i class="something">sometext</i>')
+        })
+      })
+
+      describe('when `rightLabelHTML` is specified', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', rightLabelHTML: '<i class="something">sometext</i>'}])
+        })
+
+        it('displays the text in the suggestion', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let label = editorView.querySelector('.autocomplete-plus li .right-label .something')
+          expect(label).toHaveText('sometext')
+        })
+      })
+
+      describe('when `leftLabel` is specified', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', leftLabel: '<i class="something">sometext</i>'}])
+        })
+
+        it('displays the text in the suggestion', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let label = editorView.querySelector('.autocomplete-plus li .left-label')
+          expect(label).toHaveText('<i class="something">sometext</i>')
+        })
+      })
+
+      describe('when `leftLabelHTML` is specified', () => {
+        beforeEach(() => {
+          spyOn(provider, 'getSuggestions').andCallFake(options => [{text: 'ok', leftLabelHTML: '<i class="something">sometext</i>'}])
+        })
+
+        it('displays the text in the suggestion', async () => {
+          triggerAutocompletion(editor)
+          await waitForAutocomplete(editor)
+
+          let label = editorView.querySelector('.autocomplete-plus li .left-label .something')
+          expect(label).toHaveText('sometext')
+        })
+      })
+    })
+
+    describe('when clicking in the suggestion list', () => {
+      beforeEach(() => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => {
+          let list = ['ab', 'abc', 'abcd', 'abcde']
+          return (list.map((text) => ({text, description: `${text} yeah ok`})))
+        })
+      })
+
+      it('will select the item and confirm the selection', async () => {
+        triggerAutocompletion(editor, true, 'a')
+        await waitForAutocomplete(editor)
+
+        // Get the second item
+        let item = editorView.querySelectorAll('.autocomplete-plus li')[1]
+
+        // Click the item, expect list to be hidden and text to be added
+        let mouse = document.createEvent('MouseEvents')
+        mouse.initMouseEvent('mousedown', true, true, window)
+        item.dispatchEvent(mouse)
+        mouse = document.createEvent('MouseEvents')
+        mouse.initMouseEvent('mouseup', true, true, window)
+        item.dispatchEvent(mouse)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        expect(editor.getBuffer().getLastLine()).toEqual(item.textContent.trim())
+      })
+
+      it('will not close the list when the description is clicked', async () => {
+        triggerAutocompletion(editor, true, 'a')
+        await waitForAutocomplete(editor)
+
+        let description = editorView.querySelector('.autocomplete-plus .suggestion-description-content')
+
+        // Click the description, expect list to still show
+        let mouse = document.createEvent('MouseEvents')
+        mouse.initMouseEvent('mousedown', true, true, window)
+        description.dispatchEvent(mouse)
+        mouse = document.createEvent('MouseEvents')
+        mouse.initMouseEvent('mouseup', true, true, window)
+        description.dispatchEvent(mouse)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+      })
+    })
+
+    describe('Keybind to navigate to descriptionMoreLink', () => {
+      it('triggers openExternal on keybind if there is a description', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'ab', description: 'it is ab'}])
+        let shell = require('electron').shell
+        spyOn(shell, 'openExternal')
+
+        triggerAutocompletion(editor, true, 'a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        atom.commands.dispatch(editorView, 'autocomplete-plus:navigate-to-description-more-link')
+        expect(shell.openExternal).toHaveBeenCalled()
+      })
+
+      it('does not trigger openExternal on keybind if there is not a description', async () => {
+        spyOn(provider, 'getSuggestions').andCallFake(() => [{text: 'ab'}])
+        let shell = require('electron').shell
+        spyOn(shell, 'openExternal')
+
+        triggerAutocompletion(editor, true, 'a')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        atom.commands.dispatch(editorView, 'autocomplete-plus:navigate-to-description-more-link')
+        expect(shell.openExternal).not.toHaveBeenCalled()
+      })
+    })
+  })
+
+  describe('when opening a file without a path', () => {
+    beforeEach(async () => {
+      editor = await atom.workspace.open('')
+      editorView = atom.views.getView(editor)
+
+      await atom.packages.activatePackage('language-text')
+
+      // Activate the package
+      mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+
+      await conditionPromise(() => {
+        return mainModule && mainModule.autocompleteManager && mainModule.autocompleteManager.ready
+      })
+
+      ;({ autocompleteManager } = mainModule)
+      spyOn(autocompleteManager, 'findSuggestions').andCallThrough()
+      spyOn(autocompleteManager, 'displaySuggestions').andCallThrough()
+    })
+
+    describe('when strict matching is used', () => {
+      beforeEach(() => atom.config.set('autocomplete-plus.strictMatching', true))
+
+      it('using strict matching does not cause issues when typing', async () => {
+        editor.moveToBottom()
+        editor.insertText('h')
+        editor.insertText('e')
+        editor.insertText('l')
+        editor.insertText('l')
+        editor.insertText('o')
+
+        await conditionPromise(
+          () => autocompleteManager.findSuggestions.callCount === 1
+        )
+      })
+    })
+  })
+
+  describe('when opening a javascript file', () => {
+    beforeEach(async () => {
+      atom.config.set('autocomplete-plus.enableAutoActivation', true)
+
+      editor = await atom.workspace.open('sample.js')
+      editorView = atom.views.getView(editor)
+
+      await atom.packages.activatePackage('language-javascript')
+
+      mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+
+      await conditionPromise(() => {
+        autocompleteManager = mainModule.autocompleteManager
+        return autocompleteManager
+      })
+
+      await timeoutPromise(autocompleteManager.providerManager.defaultProvider.deferBuildWordListInterval + 100)
+    })
+
+    describe('when the built-in provider is disabled', () =>
+      it('should not show the suggestion list', async () => {
+        atom.config.set('autocomplete-plus.enableBuiltinProvider', false)
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        triggerAutocompletion(editor)
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      })
+    )
+
+    describe('when the buffer changes', () => {
+      it('should show the suggestion list when suggestions are found', async () => {
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        triggerAutocompletion(editor)
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+        // Check suggestions
+        let suggestions = ['function', 'if', 'left', 'shift']
+        let s = editorView.querySelectorAll('.autocomplete-plus li span.word')
+        for (let i = 0; i < s.length; i++) {
+          let item = s[i]
+          expect(item.innerText).toEqual(suggestions[i])
+        }
+      })
+
+      it('should not show the suggestion list when no suggestions are found', async () => {
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        editor.moveToBottom()
+        editor.insertText('x')
+
+        await waitForAutocompleteToDisappear(editor)
+      })
+
+      it('shows the suggestion list on backspace if allowed', async () => {
+        atom.config.set('autocomplete-plus.backspaceTriggersAutocomplete', true)
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        editor.moveToBottom()
+        editor.insertText('f')
+        editor.insertText('u')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        editor.insertText('\r')
+        await waitForAutocompleteToDisappear(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        let key = atom.keymaps.constructor.buildKeydownEvent('backspace', {target: document.activeElement})
+        atom.keymaps.handleKeyboardEvent(key)
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        key = atom.keymaps.constructor.buildKeydownEvent('backspace', {target: document.activeElement})
+        atom.keymaps.handleKeyboardEvent(key)
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        expect(editor.lineTextForBufferRow(13)).toBe('f')
+      })
+
+      it('does not shows the suggestion list on backspace if disallowed', async () => {
+        atom.config.set('autocomplete-plus.backspaceTriggersAutocomplete', false)
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        editor.moveToBottom()
+        editor.insertText('f')
+        editor.insertText('u')
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        editor.insertText('\r')
+
+        await waitForAutocompleteToDisappear(editor)
+        let key = atom.keymaps.constructor.buildKeydownEvent('backspace', {target: document.activeElement})
+        atom.keymaps.handleKeyboardEvent(key)
+
+        await waitForAutocompleteToDisappear(editor)
+        key = atom.keymaps.constructor.buildKeydownEvent('backspace', {target: document.activeElement})
+        atom.keymaps.handleKeyboardEvent(key)
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+        expect(editor.lineTextForBufferRow(13)).toBe('f')
+      })
+
+      it("keeps the suggestion list open when it's already open on backspace", async () => {
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        editor.moveToBottom()
+        editor.insertText('f')
+        editor.insertText('u')
+        await waitForAutocomplete(editor)
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+        let key = atom.keymaps.constructor.buildKeydownEvent('backspace', {target: document.activeElement})
+        atom.keymaps.handleKeyboardEvent(key)
+        await waitForAutocomplete(editor)
+
+        expect(editorView.querySelector('.autocomplete-plus')).toExist()
+        expect(editor.lineTextForBufferRow(13)).toBe('f')
+      })
+
+      it("does not open the suggestion on backspace when it's closed", async () => {
+        atom.config.set('autocomplete-plus.backspaceTriggersAutocomplete', false)
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        editor.setCursorBufferPosition([2, 39]) // at the end of `items`
+
+        let key = atom.keymaps.constructor.buildKeydownEvent('backspace', {target: document.activeElement})
+        atom.keymaps.handleKeyboardEvent(key)
+
+        await timeoutPromise(100)
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      })
+
+      it('does not update the suggestion list while composition is in progress', async () => {
+        const activeElement = editorView.querySelector('input')
+        spyOn(autocompleteManager.suggestionList, 'changeItems').andCallThrough()
+
+        editor.moveToBottom()
+        editor.insertText('q')
+        editor.insertText('u')
+
+        await waitForAutocomplete(editor)
+
+        expect(autocompleteManager.suggestionList.changeItems).toHaveBeenCalled()
+        expect(autocompleteManager.suggestionList.changeItems.mostRecentCall.args[0][0].text).toBe('quicksort')
+        autocompleteManager.suggestionList.changeItems.callCount = 0
+
+        activeElement.dispatchEvent(buildIMECompositionEvent('compositionstart', {data: 'i', target: activeElement}))
+        triggerAutocompletion(editor, false, 'i')
+
+        await conditionPromise(() =>
+          autocompleteManager.suggestionList.changeItems.callCount > 0
+        )
+
+        expect(autocompleteManager.suggestionList.changeItems.mostRecentCall.args[0][0].text).toBe('quicksort')
+        autocompleteManager.suggestionList.changeItems.callCount = 0
+
+        activeElement.dispatchEvent(buildIMECompositionEvent('compositionupdate', {data: 'ï', target: activeElement}))
+        editor.selectLeft()
+
+        editor.insertText('ï')
+
+        const initialCallCount = autocompleteManager.suggestionList.changeItems.callCount
+        await conditionPromise(() => autocompleteManager.suggestionList.changeItems.callCount > initialCallCount)
+
+        expect(autocompleteManager.suggestionList.changeItems).toHaveBeenCalledWith(null)
+        activeElement.dispatchEvent(buildIMECompositionEvent('compositionend', {target: activeElement}))
+      })
+
+      it('does not show the suggestion list when it is triggered then no longer needed', async () => {
+        editor.moveToBottom()
+        editor.insertText('f')
+        editor.insertText('u')
+        editor.insertText('\r')
+
+        await timeoutPromise(100)
+
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+      })
+    })
+
+    describe('.cancel()', () => {
+      it('unbinds autocomplete event handlers for move-up and move-down', () => {
+        triggerAutocompletion(editor, false)
+
+        autocompleteManager.hideSuggestionList()
+        editorView = atom.views.getView(editor)
+        atom.commands.dispatch(editorView, 'core:move-down')
+        expect(editor.getCursorBufferPosition().row).toBe(1)
+
+        atom.commands.dispatch(editorView, 'core:move-up')
+        expect(editor.getCursorBufferPosition().row).toBe(0)
+      })
+    })
+  })
+
+  describe('when a long completion exists', () => {
+    beforeEach(async () => {
+      atom.config.set('autocomplete-plus.enableAutoActivation', true)
+
+      editor = await atom.workspace.open('samplelong.js')
+
+      // Activate the package
+      mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+
+      await conditionPromise(() => mainModule.autocompleteManager)
+      autocompleteManager = mainModule.autocompleteManager
+    })
+
+    it('sets the width of the view to be wide enough to contain the longest completion without scrolling', async () => {
+      editor.moveToBottom()
+      editor.insertNewline()
+      editor.insertText('t')
+
+      await waitForAutocomplete(editor)
+
+      let suggestionListView = autocompleteManager.suggestionList.suggestionListElement
+      expect(suggestionListView.scrollWidth).toBe(suggestionListView.offsetWidth)
+    })
+  })
+
+  describe('when watching an external text editor for a given set of provider labels', () => {
+    let bottomEditor
+    let bottomEditorView
+    let autocompleteDisposable
+
+    beforeEach(async () => {
+      // Activate package.
+      const pck = await atom.packages.activatePackage('autocomplete-plus')
+      mainModule = pck.mainModule
+
+      autocompleteManager = mainModule.autocompleteManager
+
+      // Create external providers with labels.
+      let bottomProvider = {
+        labels: ['bottom-label'],
+        scopeSelector: '*',
+        getSuggestions (options) { return [{text: 'bottom'}] }
+      }
+      mainModule.consumeProvider(bottomProvider)
+
+      let centerProvider = {
+        labels: ['workspace-center'],
+        scopeSelector: '*',
+        getSuggestions (options) { return [{text: 'center'}] }
+      }
+      mainModule.consumeProvider(centerProvider)
+
+      editor = await atom.workspace.open('')
+      editorView = atom.views.getView(editor)
+
+      // Create an editor in the bottom panel,
+      // requesting autocompletions from a given label.
+      bottomEditor = new TextEditor()
+      bottomEditorView = atom.views.getView(bottomEditor)
+      atom.workspace.addBottomPanel({item: bottomEditorView, visible: true})
+      autocompleteDisposable = autocompleteManager.watchEditor(
+        bottomEditor,
+        ['bottom-label']
+      )
+    })
+
+    it('provides appropriate autocompletions when each editor is focused.', async () => {
+      bottomEditorView.focus()
+      triggerAutocompletion(bottomEditor)
+      await waitForAutocomplete(bottomEditor)
+
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+      let items = bottomEditorView.querySelectorAll('.autocomplete-plus li')
+      expect(items.length).toEqual(1)
+      expect(items[0].innerText.trim()).toEqual('bottom')
+
+      editorView.focus()
+      triggerAutocompletion(editor)
+      await waitForAutocomplete(editor)
+
+      expect(bottomEditorView.querySelector('.autocomplete-plus')).not.toExist()
+
+      items = editorView.querySelectorAll('.autocomplete-plus li')
+      expect(items.length).toEqual(1)
+      expect(items[0].innerText.trim()).toEqual('center')
+    })
+
+    it('stops providing autocompletions when disposed.', async () => {
+      autocompleteDisposable.dispose()
+      bottomEditorView.focus()
+      triggerAutocompletion(bottomEditor)
+      await timeoutPromise(100)
+      expect(bottomEditorView.querySelector('.autocomplete-plus')).not.toExist()
+    })
+  })
+})
diff --git a/packages/autocomplete-plus/spec/autocomplete-manager-undo-spec.js b/packages/autocomplete-plus/spec/autocomplete-manager-undo-spec.js
new file mode 100644
index 000000000..acba2562a
--- /dev/null
+++ b/packages/autocomplete-plus/spec/autocomplete-manager-undo-spec.js
@@ -0,0 +1,58 @@
+'use babel'
+/* eslint-env jasmine */
+
+import { conditionPromise, waitForAutocomplete } from './spec-helper'
+import path from 'path'
+
+describe('Autocomplete Manager', () => {
+  let editorView
+  let editor
+  let mainModule
+
+  beforeEach(() => {
+    atom.workspace.project.setPaths([path.join(__dirname, 'fixtures')]);
+    // Set to live completion
+    atom.config.set('autocomplete-plus.enableAutoActivation', true)
+    atom.config.set('editor.fontSize', '16')
+
+    let workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+  })
+
+  describe('Undo a completion', () => {
+    beforeEach(async () => {
+      jasmine.useRealClock()
+      atom.config.set('autocomplete-plus.enableAutoActivation', true)
+
+      editor = await atom.workspace.open('sample.js')
+
+      await atom.packages.activatePackage('language-javascript')
+
+      // Activate the package
+      mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+
+      await conditionPromise(() =>
+        mainModule.autocompleteManager && mainModule.autocompleteManager.ready
+      )
+    })
+
+    it('restores the previous state', async () => {
+      // Trigger an autocompletion
+      editor.moveToBottom()
+      editor.moveToBeginningOfLine()
+      editor.insertText('f')
+
+      await waitForAutocomplete(editor)
+
+      // Accept suggestion
+      editorView = atom.views.getView(editor)
+      atom.commands.dispatch(editorView, 'autocomplete-plus:confirm')
+
+      expect(editor.getBuffer().getLastLine()).toEqual('function')
+
+      editor.undo()
+
+      expect(editor.getBuffer().getLastLine()).toEqual('f')
+    })
+  })
+})
diff --git a/packages/autocomplete-plus/spec/fixtures/blacklisted.md b/packages/autocomplete-plus/spec/fixtures/blacklisted.md
new file mode 100644
index 000000000..23ddbdb3b
--- /dev/null
+++ b/packages/autocomplete-plus/spec/fixtures/blacklisted.md
@@ -0,0 +1,4 @@
+This is a simple markdown file. Autocompletion should not work here.
+====================================================================
+
+![](http://i.lvme.me/xmeh35.jpg)
diff --git a/packages/autocomplete-plus/spec/fixtures/css.css b/packages/autocomplete-plus/spec/fixtures/css.css
new file mode 100644
index 000000000..d5ae97e68
--- /dev/null
+++ b/packages/autocomplete-plus/spec/fixtures/css.css
@@ -0,0 +1,5 @@
+body {
+  font-size: 1234px;
+  width: 110%;
+  font-weight: bold !important;
+}
diff --git a/packages/autocomplete-plus/spec/fixtures/sample.coffee b/packages/autocomplete-plus/spec/fixtures/sample.coffee
new file mode 100644
index 000000000..187eb4fc2
--- /dev/null
+++ b/packages/autocomplete-plus/spec/fixtures/sample.coffee
@@ -0,0 +1,7 @@
+SomeModule = require 'some-module'
+
+class MyClass extends SomeModule
+  constructor: ->
+
+  quicksort: ->
+    # do quicksort here
diff --git a/packages/autocomplete-plus/spec/fixtures/sample.js b/packages/autocomplete-plus/spec/fixtures/sample.js
new file mode 100644
index 000000000..566ae67db
--- /dev/null
+++ b/packages/autocomplete-plus/spec/fixtures/sample.js
@@ -0,0 +1,13 @@
+var quicksort = function () {
+  var sort = function(items) {
+    if (items.length <= 1) return items;
+    var pivot = items.shift(), current, left = [], right = [];
+    while(items.length > 0) {
+      current = items.shift();
+      current < pivot ? left.push(current) : right.push(current);
+    }
+    return sort(left).concat(pivot).concat(sort(right));
+  };
+
+  return sort(Array.apply(this, arguments));
+};
diff --git a/packages/autocomplete-plus/spec/fixtures/sample.txt b/packages/autocomplete-plus/spec/fixtures/sample.txt
new file mode 100644
index 000000000..3e715502b
--- /dev/null
+++ b/packages/autocomplete-plus/spec/fixtures/sample.txt
@@ -0,0 +1 @@
+Some text.
diff --git a/packages/autocomplete-plus/spec/fixtures/samplelong.js b/packages/autocomplete-plus/spec/fixtures/samplelong.js
new file mode 100644
index 000000000..b4dddd5f7
--- /dev/null
+++ b/packages/autocomplete-plus/spec/fixtures/samplelong.js
@@ -0,0 +1,15 @@
+var thisIsAReallyReallyReallyLongCompletion = function () { };
+
+var quicksort = function () {
+  var sort = function(items) {
+    if (items.length <= 1) return items;
+    var pivot = items.shift(), current, left = [], right = [];
+    while(items.length > 0) {
+      current = items.shift();
+      current < pivot ? left.push(current) : right.push(current);
+    }
+    return sort(left).concat(pivot).concat(sort(right));
+  };
+
+  return sort(Array.apply(this, arguments));
+};
diff --git a/packages/autocomplete-plus/spec/main-spec.js b/packages/autocomplete-plus/spec/main-spec.js
new file mode 100644
index 000000000..2f3184a58
--- /dev/null
+++ b/packages/autocomplete-plus/spec/main-spec.js
@@ -0,0 +1,60 @@
+'use babel'
+/* eslint-env jasmine */
+
+import { conditionPromise, waitForAutocomplete } from './spec-helper'
+import path from 'path'
+
+describe('Autocomplete', () => {
+  let editorView
+  let editor
+  let autocompleteManager
+  let mainModule
+
+  beforeEach(async () => {
+    atom.workspace.project.setPaths([path.join(__dirname, 'fixtures')]);
+    jasmine.useRealClock()
+
+    // Set to live completion
+    atom.config.set('autocomplete-plus.enableAutoActivation', true)
+    atom.config.set('autocomplete-plus.fileBlacklist', ['.*', '*.md'])
+
+    let workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+
+    editor = await atom.workspace.open('sample.js')
+    await atom.packages.activatePackage('language-javascript')
+
+    // Activate the package
+    mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+
+    await conditionPromise(() =>
+      mainModule.autocompleteManager && mainModule.autocompleteManager.ready
+    )
+
+    autocompleteManager = mainModule.autocompleteManager
+    editorView = atom.views.getView(editor)
+  })
+
+  describe('@activate()', () =>
+    it('activates autocomplete and initializes AutocompleteManager', () => {
+      expect(autocompleteManager).toBeDefined()
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+    })
+  )
+
+  describe('@deactivate()', () => {
+    it('removes all autocomplete views', async () => {
+      // Trigger an autocompletion
+      editor.moveToBottom()
+      editor.insertText('A')
+
+      await waitForAutocomplete(editor)
+
+      expect(editorView.querySelector('.autocomplete-plus')).toExist()
+
+      // Deactivate the package
+      await atom.packages.deactivatePackage('autocomplete-plus')
+      expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+    })
+  })
+})
diff --git a/packages/autocomplete-plus/spec/provider-api-legacy-spec.js b/packages/autocomplete-plus/spec/provider-api-legacy-spec.js
new file mode 100644
index 000000000..7cf008442
--- /dev/null
+++ b/packages/autocomplete-plus/spec/provider-api-legacy-spec.js
@@ -0,0 +1,340 @@
+'use babel'
+/* eslint-env jasmine */
+
+import { triggerAutocompletion, waitForAutocomplete, conditionPromise } from './spec-helper'
+import grim from 'grim'
+import path from 'path'
+
+describe('Provider API Legacy', () => {
+  let [editor, mainModule, autocompleteManager, registration, testProvider] = []
+
+  beforeEach(async () => {
+    atom.workspace.project.setPaths([path.join(__dirname, 'fixtures')]);
+    jasmine.useRealClock()
+    jasmine.snapshotDeprecations()
+
+    // Set to live completion
+    atom.config.set('autocomplete-plus.enableAutoActivation', true)
+    atom.config.set('editor.fontSize', '16')
+
+    // Set the completion delay
+    atom.config.set('autocomplete-plus.autoActivationDelay', 100)
+
+    let workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+
+    await atom.packages.activatePackage('language-javascript')
+    editor = await atom.workspace.open('sample.js')
+    mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+    await conditionPromise(() => {
+      autocompleteManager = mainModule.autocompleteManager
+      return autocompleteManager
+    })
+  })
+
+  afterEach(() => {
+    if (registration && registration.dispose) {
+      registration.dispose()
+    }
+    registration = null
+    if (testProvider && testProvider.dispose) {
+      testProvider.dispose()
+    }
+    testProvider = null
+    jasmine.restoreDeprecationsSnapshot()
+  })
+
+  describe('Provider with API v2.0 registered as 3.0', () =>
+    it('throws exceptions for renamed provider properties on registration', () => {
+      expect(() =>
+        mainModule.consumeProvider_3_0({
+          selector: '*',
+          getSuggestions () {}
+        })
+      ).toThrow()
+
+      expect(() =>
+        mainModule.consumeProvider_3_0({
+          disableForSelector: '*',
+          getSuggestions () {}
+        })
+      ).toThrow()
+    })
+  )
+
+  describe('Provider with API v1.0 registered as 2.0', () => {
+    it('raises deprecations for provider attributes on registration', () => {
+      let numberDeprecations = grim.getDeprecationsLength()
+
+      class SampleProvider {
+        constructor () {
+          this.id = 'sample-provider'
+          this.selector = '.source.js,.source.coffee'
+          this.blacklist = '.comment'
+        }
+        requestHandler (options) { return [{word: 'ohai', prefix: 'ohai'}] }
+      }
+
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', new SampleProvider())
+
+      expect(grim.getDeprecationsLength() - numberDeprecations).toBe(3)
+
+      let deprecations = grim.getDeprecations()
+
+      let deprecation = deprecations[deprecations.length - 3]
+      expect(deprecation.getMessage()).toContain('`id`')
+      expect(deprecation.getMessage()).toContain('SampleProvider')
+
+      deprecation = deprecations[deprecations.length - 2]
+      expect(deprecation.getMessage()).toContain('`requestHandler`')
+
+      deprecation = deprecations[deprecations.length - 1]
+      expect(deprecation.getMessage()).toContain('`blacklist`')
+    })
+
+    it('raises deprecations when old API parameters are used in the 2.0 API', async () => {
+      class SampleProvider {
+        constructor () {
+          this.selector = '.source.js,.source.coffee'
+        }
+        getSuggestions (options) {
+          return [{
+            word: 'ohai',
+            prefix: 'ohai',
+            label: '<span style="color: red">ohai</span>',
+            renderLabelAsHtml: true,
+            className: 'ohai'
+          }
+          ]
+        }
+      }
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', new SampleProvider())
+      let numberDeprecations = grim.getDeprecationsLength()
+      triggerAutocompletion(editor, true, 'o')
+      await waitForAutocomplete(editor)
+
+      expect(grim.getDeprecationsLength() - numberDeprecations).toBe(3)
+
+      let deprecations = grim.getDeprecations()
+
+      let deprecation = deprecations[deprecations.length - 3]
+      expect(deprecation.getMessage()).toContain('`word`')
+      expect(deprecation.getMessage()).toContain('SampleProvider')
+
+      deprecation = deprecations[deprecations.length - 2]
+      expect(deprecation.getMessage()).toContain('`prefix`')
+
+      deprecation = deprecations[deprecations.length - 1]
+      expect(deprecation.getMessage()).toContain('`label`')
+    })
+
+    it('raises deprecations when hooks are passed via each suggestion', async () => {
+      class SampleProvider {
+        constructor () {
+          this.selector = '.source.js,.source.coffee'
+        }
+
+        getSuggestions (options) {
+          return [{
+            text: 'ohai',
+            replacementPrefix: 'ohai',
+            onWillConfirm () {},
+            onDidConfirm () {}
+          }
+          ]
+        }
+      }
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', new SampleProvider())
+      let numberDeprecations = grim.getDeprecationsLength()
+      triggerAutocompletion(editor, true, 'o')
+      await waitForAutocomplete(editor)
+
+      expect(grim.getDeprecationsLength() - numberDeprecations).toBe(2)
+
+      let deprecations = grim.getDeprecations()
+
+      let deprecation = deprecations[deprecations.length - 2]
+      expect(deprecation.getMessage()).toContain('`onWillConfirm`')
+      expect(deprecation.getMessage()).toContain('SampleProvider')
+
+      deprecation = deprecations[deprecations.length - 1]
+      expect(deprecation.getMessage()).toContain('`onDidConfirm`')
+    })
+  })
+
+  describe('Provider API v1.1.0', () =>
+    it('registers the provider specified by {providers: [provider]}', () => {
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+
+      testProvider = {
+        selector: '.source.js,.source.coffee',
+        requestHandler (options) { return [{word: 'ohai', prefix: 'ohai'}] }
+      }
+
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '1.1.0', {providers: [testProvider]})
+
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+    })
+  )
+
+  describe('Provider API v1.0.0', () => {
+    let [registration1, registration2, registration3] = []
+
+    afterEach(() => {
+      if (registration1) {
+        registration1.dispose()
+      }
+      if (registration2) {
+        registration2.dispose()
+      }
+      if (registration3) {
+        registration3.dispose()
+      }
+    })
+
+    it('passes the correct parameters to requestHandler', async () => {
+      testProvider = {
+        selector: '.source.js,.source.coffee',
+        requestHandler (options) { return [ {word: 'ohai', prefix: 'ohai'} ] }
+      }
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '1.0.0', {provider: testProvider})
+
+      spyOn(testProvider, 'requestHandler')
+      triggerAutocompletion(editor, true, 'o')
+      await waitForAutocomplete(editor)
+
+      let args = testProvider.requestHandler.mostRecentCall.args[0]
+      expect(args.editor).toBeDefined()
+      expect(args.buffer).toBeDefined()
+      expect(args.cursor).toBeDefined()
+      expect(args.position).toBeDefined()
+      expect(args.scope).toBeDefined()
+      expect(args.scopeChain).toBeDefined()
+      expect(args.prefix).toBeDefined()
+    })
+
+    it('should allow registration of a provider', async () => {
+      expect(autocompleteManager.providerManager.store).toBeDefined()
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+
+      testProvider = {
+        requestHandler (options) {
+          return [{
+            word: 'ohai',
+            prefix: 'ohai',
+            label: '<span style="color: red">ohai</span>',
+            renderLabelAsHtml: true,
+            className: 'ohai'
+          }
+          ]
+        },
+        selector: '.source.js,.source.coffee'
+      }
+      // Register the test provider
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '1.0.0', {provider: testProvider})
+
+      expect(autocompleteManager.providerManager.store).toBeDefined()
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee').length).toEqual(2)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[0]).toEqual(testProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[1]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[0]).toEqual(testProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[1]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.go')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+
+      triggerAutocompletion(editor, true, 'o')
+      await waitForAutocomplete(editor)
+
+      let suggestionListView = autocompleteManager.suggestionList.suggestionListElement
+
+      expect(suggestionListView.element.querySelector('li .right-label')).toHaveHtml('<span style="color: red">ohai</span>')
+      expect(suggestionListView.element.querySelector('li')).toHaveClass('ohai')
+    })
+
+    it('should dispose a provider registration correctly', () => {
+      expect(autocompleteManager.providerManager.store).toBeDefined()
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+
+      testProvider = {
+        requestHandler (options) {
+          return [{
+            word: 'ohai',
+            prefix: 'ohai'
+          }]
+        },
+        selector: '.source.js,.source.coffee'
+      }
+      // Register the test provider
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '1.0.0', {provider: testProvider})
+
+      expect(autocompleteManager.providerManager.store).toBeDefined()
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee').length).toEqual(2)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[0]).toEqual(testProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[1]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[0]).toEqual(testProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[1]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.go')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+
+      registration.dispose()
+
+      expect(autocompleteManager.providerManager.store).toBeDefined()
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+
+      registration.dispose()
+
+      expect(autocompleteManager.providerManager.store).toBeDefined()
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+    })
+
+    it('should remove a providers registration if the provider is disposed', () => {
+      expect(autocompleteManager.providerManager.store).toBeDefined()
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+
+      testProvider = {
+        requestHandler (options) {
+          return [{
+            word: 'ohai',
+            prefix: 'ohai'
+          }]
+        },
+        selector: '.source.js,.source.coffee',
+        dispose () { }
+      }
+      // Register the test provider
+      registration = atom.packages.serviceHub.provide('autocomplete.provider', '1.0.0', {provider: testProvider})
+
+      expect(autocompleteManager.providerManager.store).toBeDefined()
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee').length).toEqual(2)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[0]).toEqual(testProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[1]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[0]).toEqual(testProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[1]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.go')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+
+      testProvider.dispose()
+
+      expect(autocompleteManager.providerManager.store).toBeDefined()
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee').length).toEqual(1)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+      expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.coffee')[0]).toEqual(autocompleteManager.providerManager.defaultProvider)
+    })
+  })
+})
diff --git a/packages/autocomplete-plus/spec/provider-api-spec.js b/packages/autocomplete-plus/spec/provider-api-spec.js
new file mode 100644
index 000000000..1cd506b5b
--- /dev/null
+++ b/packages/autocomplete-plus/spec/provider-api-spec.js
@@ -0,0 +1,293 @@
+'use babel'
+/* eslint-env jasmine */
+
+import {waitForAutocomplete, triggerAutocompletion, conditionPromise} from './spec-helper'
+import path from 'path'
+
+describe('Provider API', () => {
+  let [editor, mainModule, autocompleteManager, registration, testProvider, testProvider2] = []
+
+  beforeEach(async () => {
+    atom.workspace.project.setPaths([path.join(__dirname, 'fixtures')]);
+    jasmine.useRealClock()
+
+    // Set to live completion
+    atom.config.set('autocomplete-plus.enableAutoActivation', true)
+    atom.config.set('editor.fontSize', '16')
+
+    // Set the completion delay
+    atom.config.set('autocomplete-plus.autoActivationDelay', 100)
+
+    let workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+
+    // Activate the package
+    await atom.packages.activatePackage('language-javascript')
+    editor = await atom.workspace.open('sample.js')
+    mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+
+    await conditionPromise(() => {
+      autocompleteManager = mainModule.autocompleteManager
+      return autocompleteManager
+    })
+  })
+
+  afterEach(() => {
+    if (registration && registration.dispose) {
+      registration.dispose()
+    }
+    registration = null
+    if (testProvider && testProvider.dispose) {
+      testProvider.dispose()
+    }
+    testProvider = null
+  })
+
+  describe('Provider API v2.0.0', () => {
+    describe('common functionality', () => {
+      it('registers the provider specified by [provider]', () => {
+        testProvider = {
+          scopeSelector: '.source.js,.source.coffee',
+          getSuggestions (options) { return [{text: 'ohai', replacementPrefix: 'ohai'}] }
+        }
+
+        expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', [testProvider])
+        return expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      })
+
+      it('registers the provider specified by the naked provider', () => {
+        testProvider = {
+          scopeSelector: '.source.js,.source.coffee',
+          getSuggestions (options) { return [{text: 'ohai', replacementPrefix: 'ohai'}] }
+        }
+
+        expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+        expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      })
+
+      it('registers the provider under the given list of labels, the default being [\'workspace-center\']', () => {
+        testProvider = {
+          scopeSelector: '.source.js,.source.coffee',
+          getSuggestions (options) { return [{text: 'ohai', replacementPrefix: 'ohai'}] }
+        }
+        testProvider2 = {
+          labels: ['testProvider2'],
+          scopeSelector: '.source.js,.source.coffee',
+          getSuggestions (options) { return [{text: 'ohai', replacementPrefix: 'ohai'}] }
+        }
+
+        expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+        expect(autocompleteManager.providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider2)
+        expect(autocompleteManager.providerManager.applicableProviders(['testProvider2'], '.source.js').length).toEqual(1)
+        expect(autocompleteManager.providerManager.applicableProviders(['testProvider2', 'workspace-center'], '.source.js').length).toEqual(3)
+      })
+
+      it('passes the correct parameters to getSuggestions for the version', async () => {
+        testProvider = {
+          scopeSelector: '.source.js,.source.coffee',
+          getSuggestions (options) { return [{text: 'ohai', replacementPrefix: 'ohai'}] }
+        }
+
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+
+        spyOn(testProvider, 'getSuggestions')
+        triggerAutocompletion(editor, true, 'o')
+        await waitForAutocomplete(editor)
+
+        let args = testProvider.getSuggestions.mostRecentCall.args[0]
+        expect(args.editor).toBeDefined()
+        expect(args.bufferPosition).toBeDefined()
+        expect(args.scopeDescriptor).toBeDefined()
+        expect(args.prefix).toBeDefined()
+
+        expect(args.scope).not.toBeDefined()
+        expect(args.scopeChain).not.toBeDefined()
+        expect(args.buffer).not.toBeDefined()
+        expect(args.cursor).not.toBeDefined()
+      })
+
+      it('correctly displays the suggestion options', async () => {
+        testProvider = {
+          scopeSelector: '.source.js, .source.coffee',
+          getSuggestions (options) {
+            return [{
+              text: 'ohai',
+              replacementPrefix: 'o',
+              rightLabelHTML: '<span style="color: red">ohai</span>',
+              description: 'There be documentation'
+            }]
+          }
+        }
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+
+        triggerAutocompletion(editor, true, 'o')
+        await waitForAutocomplete(editor)
+
+        let suggestionListView = autocompleteManager.suggestionList.suggestionListElement
+        expect(suggestionListView.element.querySelector('li .right-label')).toHaveHtml('<span style="color: red">ohai</span>')
+        expect(suggestionListView.element.querySelector('.word')).toHaveText('ohai')
+        expect(suggestionListView.element.querySelector('.suggestion-description-content')).toHaveText('There be documentation')
+        expect(suggestionListView.element.querySelector('.suggestion-description-more-link').style.display).toBe('none')
+      })
+
+      it('favors the `displayText` over text or snippet suggestion options', async () => {
+        testProvider = {
+          scopeSelector: '.source.js, .source.coffee',
+          getSuggestions (options) {
+            return [{
+              text: 'ohai',
+              snippet: 'snippet',
+              displayText: 'displayOHAI',
+              replacementPrefix: 'o',
+              rightLabelHTML: '<span style="color: red">ohai</span>',
+              description: 'There be documentation'
+            }]
+          }
+        }
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+
+        triggerAutocompletion(editor, true, 'o')
+        await waitForAutocomplete(editor)
+
+        let suggestionListView = autocompleteManager.suggestionList.suggestionListElement
+        expect(suggestionListView.element.querySelector('.word')).toHaveText('displayOHAI')
+      })
+
+      it('correctly displays the suggestion description and More link', async () => {
+        testProvider = {
+          scopeSelector: '.source.js, .source.coffee',
+          getSuggestions (options) {
+            return [{
+              text: 'ohai',
+              replacementPrefix: 'o',
+              rightLabelHTML: '<span style="color: red">ohai</span>',
+              description: 'There be documentation',
+              descriptionMoreURL: 'http://google.com'
+            }]
+          }
+        }
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+
+        triggerAutocompletion(editor, true, 'o')
+        await waitForAutocomplete(editor)
+
+        let suggestionListView = autocompleteManager.suggestionList.suggestionListElement
+        let content = suggestionListView.element.querySelector('.suggestion-description-content')
+        let moreLink = suggestionListView.element.querySelector('.suggestion-description-more-link')
+        expect(content).toHaveText('There be documentation')
+        expect(moreLink).toHaveText('More..')
+        expect(moreLink.style.display).toBe('inline')
+        expect(moreLink.getAttribute('href')).toBe('http://google.com')
+      })
+
+      it('it calls getSuggestionDetailsOnSelect if available and replaces suggestion', async () => {
+        testProvider = {
+          scopeSelector: '.source.js, .source.coffee',
+          getSuggestions (options) {
+            return [{
+              text: 'ohai'
+            }]
+          },
+          getSuggestionDetailsOnSelect (suggestion) {
+            return Object.assign({}, suggestion, {description: 'foo'})
+          }
+        }
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+
+        triggerAutocompletion(editor, true, 'o')
+        await waitForAutocomplete(editor)
+
+        expect(autocompleteManager.suggestionList.items[0].description).toBe('foo')
+      })
+    })
+
+    describe('when the filterSuggestions option is set to true', () => {
+      let getSuggestions = () => autocompleteManager.suggestionList.items.map(({text}) => ({text}))
+
+      beforeEach(() => editor.setText(''))
+
+      it('filters suggestions based on the default prefix', async () => {
+        testProvider = {
+          scopeSelector: '.source.js',
+          filterSuggestions: true,
+          getSuggestions (options) {
+            return [
+              {text: 'okwow'},
+              {text: 'ohai'},
+              {text: 'ok'},
+              {text: 'cats'},
+              {text: 'something'}
+            ]
+          }
+        }
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+
+        editor.insertText('o')
+        editor.insertText('k')
+        await waitForAutocomplete(editor)
+
+        expect(getSuggestions()).toEqual([
+          {text: 'ok'},
+          {text: 'okwow'}
+        ])
+      })
+
+      it('filters suggestions based on the specified replacementPrefix for each suggestion', async () => {
+        testProvider = {
+          scopeSelector: '.source.js',
+          filterSuggestions: true,
+          getSuggestions (options) {
+            return [
+              {text: 'ohai'},
+              {text: 'hai'},
+              {text: 'okwow', replacementPrefix: 'k'},
+              {text: 'ok', replacementPrefix: 'nope'},
+              {text: '::cats', replacementPrefix: '::c'},
+              {text: 'something', replacementPrefix: 'sm'}
+            ]
+          }
+        }
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+
+        editor.insertText('h')
+        await waitForAutocomplete(editor)
+
+        expect(getSuggestions()).toEqual([
+          {text: '::cats'},
+          {text: 'hai'},
+          {text: 'something'}
+        ])
+      })
+
+      it('allows all suggestions when the prefix is an empty string / space', async () => {
+        testProvider = {
+          scopeSelector: '.source.js',
+          filterSuggestions: true,
+          getSuggestions (options) {
+            return [
+              {text: 'ohai'},
+              {text: 'hai'},
+              {text: 'okwow', replacementPrefix: ' '},
+              {text: 'ok', replacementPrefix: 'nope'}
+            ]
+          }
+        }
+        registration = atom.packages.serviceHub.provide('autocomplete.provider', '2.0.0', testProvider)
+
+        editor.insertText('h')
+        editor.insertText(' ')
+        await waitForAutocomplete(editor)
+
+        expect(getSuggestions()).toEqual([
+          {text: 'ohai'},
+          {text: 'hai'},
+          {text: 'okwow'}
+        ])
+      })
+    })
+  })
+})
diff --git a/packages/autocomplete-plus/spec/provider-manager-spec.js b/packages/autocomplete-plus/spec/provider-manager-spec.js
new file mode 100644
index 000000000..b6282e5b4
--- /dev/null
+++ b/packages/autocomplete-plus/spec/provider-manager-spec.js
@@ -0,0 +1,555 @@
+'use babel'
+/* eslint-env jasmine */
+
+import ProviderManager from '../lib/provider-manager'
+
+describe('Provider Manager', () => {
+  let [providerManager, testProvider, registration] = []
+
+  beforeEach(() => {
+    atom.config.set('autocomplete-plus.enableBuiltinProvider', true)
+    providerManager = new ProviderManager()
+    providerManager.initialize()
+    testProvider = {
+      getSuggestions (options) {
+        return [{
+          text: 'ohai',
+          replacementPrefix: 'ohai'
+        }]
+      },
+      scopeSelector: '.source.js',
+      dispose () {}
+    }
+  })
+
+  afterEach(() => {
+    if (registration && registration.dispose) {
+      registration.dispose()
+    }
+    registration = null
+    if (testProvider && testProvider.dispose) {
+      testProvider.dispose()
+    }
+    testProvider = null
+    if (providerManager && providerManager.dispose) {
+      providerManager.dispose()
+    }
+    providerManager = null
+  })
+
+  describe('when no providers have been registered, and enableBuiltinProvider is true', () => {
+    beforeEach(() => atom.config.set('autocomplete-plus.enableBuiltinProvider', true))
+
+    it('is constructed correctly', () => {
+      expect(providerManager.providers).toBeDefined()
+      expect(providerManager.subscriptions).toBeDefined()
+      expect(providerManager.defaultProvider).toBeDefined()
+    })
+
+    it('disposes correctly', () => {
+      providerManager.dispose()
+      expect(providerManager.providers).toBeNull()
+      expect(providerManager.subscriptions).toBeNull()
+      expect(providerManager.defaultProvider).toBeNull()
+    })
+
+    it('registers the default provider for all scopes', () => {
+      expect(providerManager.applicableProviders(['workspace-center'], '*').length).toBe(1)
+      expect(providerManager.applicableProviders(['workspace-center'], '*')[0]).toBe(providerManager.defaultProvider)
+    })
+
+    it('adds providers', () => {
+      expect(providerManager.isProviderRegistered(testProvider)).toEqual(false)
+      expect(hasDisposable(providerManager.subscriptions, testProvider)).toBe(false)
+
+      providerManager.addProvider(testProvider, 3)
+      expect(providerManager.isProviderRegistered(testProvider)).toEqual(true)
+      let apiVersion = providerManager.apiVersionForProvider(testProvider)
+      expect(apiVersion).toEqual(3)
+      expect(hasDisposable(providerManager.subscriptions, testProvider)).toBe(true)
+    })
+
+    it('removes providers', () => {
+      expect(providerManager.metadataForProvider(testProvider)).toBeFalsy()
+      expect(hasDisposable(providerManager.subscriptions, testProvider)).toBe(false)
+
+      providerManager.addProvider(testProvider)
+      expect(providerManager.metadataForProvider(testProvider)).toBeTruthy()
+      expect(hasDisposable(providerManager.subscriptions, testProvider)).toBe(true)
+
+      providerManager.removeProvider(testProvider)
+      expect(providerManager.metadataForProvider(testProvider)).toBeFalsy()
+      expect(hasDisposable(providerManager.subscriptions, testProvider)).toBe(false)
+    })
+
+    it('can identify a provider with a missing getSuggestions', () => {
+      let bogusProvider = {
+        badgetSuggestions (options) {},
+        scopeSelector: '.source.js',
+        dispose () {}
+      }
+      expect(providerManager.isValidProvider({}, 3)).toEqual(false)
+      expect(providerManager.isValidProvider(bogusProvider, 3)).toEqual(false)
+      expect(providerManager.isValidProvider(testProvider, 3)).toEqual(true)
+    })
+
+    it('can identify a provider with an invalid getSuggestions', () => {
+      let bogusProvider = {
+        getSuggestions: 'yo, this is a bad handler',
+        scopeSelector: '.source.js',
+        dispose () {}
+      }
+      expect(providerManager.isValidProvider({}, 3)).toEqual(false)
+      expect(providerManager.isValidProvider(bogusProvider, 3)).toEqual(false)
+      expect(providerManager.isValidProvider(testProvider, 3)).toEqual(true)
+    })
+
+    it('can identify a provider with a missing scope selector', () => {
+      let bogusProvider = {
+        getSuggestions (options) {},
+        aSelector: '.source.js',
+        dispose () {}
+      }
+      expect(providerManager.isValidProvider(bogusProvider, 3)).toEqual(false)
+      expect(providerManager.isValidProvider(testProvider, 3)).toEqual(true)
+    })
+
+    it('can identify a provider with an invalid scope selector', () => {
+      let bogusProvider = {
+        getSuggestions (options) {},
+        scopeSelector: '',
+        dispose () {}
+      }
+      expect(providerManager.isValidProvider(bogusProvider, 3)).toEqual(false)
+      expect(providerManager.isValidProvider(testProvider, 3)).toEqual(true)
+
+      bogusProvider = {
+        getSuggestions (options) {},
+        scopeSelector: false,
+        dispose () {}
+      }
+
+      expect(providerManager.isValidProvider(bogusProvider, 3)).toEqual(false)
+    })
+
+    it('correctly identifies a 1.0 provider', () => {
+      let bogusProvider = {
+        selector: '.source.js',
+        requestHandler: 'yo, this is a bad handler',
+        dispose () {}
+      }
+      expect(providerManager.isValidProvider({}, 1)).toEqual(false)
+      expect(providerManager.isValidProvider(bogusProvider, 1)).toEqual(false)
+
+      let legitProvider = {
+        selector: '.source.js',
+        requestHandler () {},
+        dispose () {}
+      }
+      expect(providerManager.isValidProvider(legitProvider, 1)).toEqual(true)
+    })
+
+    it('registers a valid provider', () => {
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeFalsy()
+
+      registration = providerManager.registerProvider(testProvider)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).not.toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeTruthy()
+    })
+
+    it('removes a registration', () => {
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeFalsy()
+
+      registration = providerManager.registerProvider(testProvider)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).not.toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeTruthy()
+      registration.dispose()
+
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeFalsy()
+    })
+
+    it('does not create duplicate registrations for the same scope', () => {
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeFalsy()
+
+      registration = providerManager.registerProvider(testProvider)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).not.toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeTruthy()
+
+      registration = providerManager.registerProvider(testProvider)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).not.toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeTruthy()
+
+      registration = providerManager.registerProvider(testProvider)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).not.toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeTruthy()
+    })
+
+    it('does not register an invalid provider', () => {
+      let bogusProvider = {
+        getSuggestions: 'yo, this is a bad handler',
+        scopeSelector: '.source.js',
+        dispose () {
+
+        }
+      }
+
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(bogusProvider)).toBe(-1)
+      expect(providerManager.metadataForProvider(bogusProvider)).toBeFalsy()
+
+      registration = providerManager.registerProvider(bogusProvider)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(bogusProvider)).toBe(-1)
+      expect(providerManager.metadataForProvider(bogusProvider)).toBeFalsy()
+    })
+
+    it('registers a provider with a blacklist', () => {
+      testProvider = {
+        getSuggestions (options) {
+          return [{
+            text: 'ohai',
+            replacementPrefix: 'ohai'
+          }]
+        },
+        scopeSelector: '.source.js',
+        disableForScopeSelector: '.source.js .comment',
+        dispose () {
+
+        }
+      }
+
+      expect(providerManager.isValidProvider(testProvider, 3)).toEqual(true)
+
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(1)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeFalsy()
+
+      registration = providerManager.registerProvider(testProvider)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').length).toEqual(2)
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js').indexOf(testProvider)).not.toBe(-1)
+      expect(providerManager.metadataForProvider(testProvider)).toBeTruthy()
+    })
+  })
+
+  describe('when no providers have been registered, and enableBuiltinProvider is false', () => {
+    beforeEach(() => atom.config.set('autocomplete-plus.enableBuiltinProvider', false))
+
+    it('does not register the default provider for all scopes', () => {
+      expect(providerManager.applicableProviders(['workspace-center'], '*').length).toBe(0)
+      expect(providerManager.defaultProvider).toEqual(null)
+      expect(providerManager.defaultProviderRegistration).toEqual(null)
+    })
+  })
+
+  describe('when providers have been registered', () => {
+    let [testProvider1, testProvider2, testProvider3, testProvider4, testProvider5] = []
+
+    beforeEach(() => {
+      atom.config.set('autocomplete-plus.enableBuiltinProvider', true)
+      providerManager = new ProviderManager()
+      providerManager.initialize()
+
+      testProvider1 = {
+        scopeSelector: '.source.js',
+        getSuggestions (options) {
+          return [{
+            text: 'ohai2',
+            replacementPrefix: 'ohai2'
+          }]
+        },
+        dispose () {}
+      }
+
+      testProvider2 = {
+        scopeSelector: '.source.js .variable.js',
+        disableForScopeSelector: '.source.js .variable.js .comment2',
+        providerblacklist: {
+          'autocomplete-plus-fuzzyprovider': '.source.js .variable.js .comment3'
+        },
+        getSuggestions (options) {
+          return [{
+            text: 'ohai2',
+            replacementPrefix: 'ohai2'
+          }]
+        },
+        dispose () {}
+      }
+
+      testProvider3 = {
+        scopeSelector: '*',
+        getSuggestions (options) {
+          return [{
+            text: 'ohai3',
+            replacementPrefix: 'ohai3'
+          }]
+        },
+        dispose () {}
+      }
+
+      testProvider4 = {
+        labels: ['workspace-center', 'label1'],
+        scopeSelector: '.source.js .comment',
+        getSuggestions (options) {
+          return [{
+            text: 'ohai4',
+            replacementPrefix: 'ohai4'
+          }]
+        },
+        dispose () {}
+      }
+
+      testProvider5 = {
+        labels: ['label1'],
+        scopeSelector: '*',
+        getSuggestions (options) {
+          return [{
+            text: 'ohai5',
+            replacementPrefix: 'ohai5'
+          }]
+        },
+        dispose () {}
+      }
+
+      providerManager.registerProvider(testProvider1)
+      providerManager.registerProvider(testProvider2)
+      providerManager.registerProvider(testProvider3)
+      providerManager.registerProvider(testProvider4)
+      providerManager.registerProvider(testProvider5)
+    })
+
+    it('returns providers in the correct order for the given scope chain and labels', () => {
+      let { defaultProvider } = providerManager
+
+      let providers = providerManager.applicableProviders(['workspace-center'], '.source.other')
+      expect(providers).toHaveLength(2)
+      expect(providers[0]).toEqual(testProvider3)
+      expect(providers[1]).toEqual(defaultProvider)
+
+      providers = providerManager.applicableProviders(['workspace-center'], '.source.js')
+      expect(providers).toHaveLength(3)
+      expect(providers[0]).toEqual(testProvider1)
+      expect(providers[1]).toEqual(testProvider3)
+      expect(providers[2]).toEqual(defaultProvider)
+
+      providers = providerManager.applicableProviders(['workspace-center'], '.source.js .comment')
+      expect(providers).toHaveLength(4)
+      expect(providers[0]).toEqual(testProvider4)
+      expect(providers[1]).toEqual(testProvider1)
+      expect(providers[2]).toEqual(testProvider3)
+      expect(providers[3]).toEqual(defaultProvider)
+
+      providers = providerManager.applicableProviders(['workspace-center'], '.source.js .variable.js')
+      expect(providers).toHaveLength(4)
+      expect(providers[0]).toEqual(testProvider2)
+      expect(providers[1]).toEqual(testProvider1)
+      expect(providers[2]).toEqual(testProvider3)
+      expect(providers[3]).toEqual(defaultProvider)
+
+      providers = providerManager.applicableProviders(['workspace-center'], '.source.js .other.js')
+      expect(providers).toHaveLength(3)
+      expect(providers[0]).toEqual(testProvider1)
+      expect(providers[1]).toEqual(testProvider3)
+      expect(providers[2]).toEqual(defaultProvider)
+
+      providers = providerManager.applicableProviders(['label1'], '.source.js .comment')
+      expect(providers).toHaveLength(2)
+      expect(providers[0]).toEqual(testProvider4)
+      expect(providers[1]).toEqual(testProvider5)
+
+      providers = providerManager.applicableProviders(['label1', 'workspace-center'], '.source.js .comment')
+      expect(providers).toHaveLength(5)
+    })
+
+    it('does not return providers if the scopeChain exactly matches a global blacklist item', () => {
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js .comment')).toHaveLength(4)
+      atom.config.set('autocomplete-plus.scopeBlacklist', ['.source.js .comment'])
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js .comment')).toHaveLength(0)
+    })
+
+    it('does not return providers if the scopeChain matches a global blacklist item with a wildcard', () => {
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js .comment')).toHaveLength(4)
+      atom.config.set('autocomplete-plus.scopeBlacklist', ['.source.js *'])
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js .comment')).toHaveLength(0)
+    })
+
+    it('does not return providers if the scopeChain matches a global blacklist item with a wildcard one level of depth below the current scope', () => {
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js .comment')).toHaveLength(4)
+      atom.config.set('autocomplete-plus.scopeBlacklist', ['.source.js *'])
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js .comment .other')).toHaveLength(0)
+    })
+
+    it('does return providers if the scopeChain does not match a global blacklist item with a wildcard', () => {
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js .comment')).toHaveLength(4)
+      atom.config.set('autocomplete-plus.scopeBlacklist', ['.source.coffee *'])
+      expect(providerManager.applicableProviders(['workspace-center'], '.source.js .comment')).toHaveLength(4)
+    })
+
+    it('filters a provider if the scopeChain matches a provider blacklist item', () => {
+      let { defaultProvider } = providerManager
+
+      let providers = providerManager.applicableProviders(['workspace-center'], '.source.js .variable.js .other.js')
+      expect(providers).toHaveLength(4)
+      expect(providers[0]).toEqual(testProvider2)
+      expect(providers[1]).toEqual(testProvider1)
+      expect(providers[2]).toEqual(testProvider3)
+      expect(providers[3]).toEqual(defaultProvider)
+
+      providers = providerManager.applicableProviders(['workspace-center'], '.source.js .variable.js .comment2.js')
+      expect(providers).toHaveLength(3)
+      expect(providers[0]).toEqual(testProvider1)
+      expect(providers[1]).toEqual(testProvider3)
+      expect(providers[2]).toEqual(defaultProvider)
+    })
+
+    it('filters a provider if the scopeChain matches a provider providerblacklist item', () => {
+      let providers = providerManager.applicableProviders(['workspace-center'], '.source.js .variable.js .other.js')
+      expect(providers).toHaveLength(4)
+      expect(providers[0]).toEqual(testProvider2)
+      expect(providers[1]).toEqual(testProvider1)
+      expect(providers[2]).toEqual(testProvider3)
+      expect(providers[3]).toEqual(providerManager.defaultProvider)
+
+      providers = providerManager.applicableProviders(['workspace-center'], '.source.js .variable.js .comment3.js')
+      expect(providers).toHaveLength(3)
+      expect(providers[0]).toEqual(testProvider2)
+      expect(providers[1]).toEqual(testProvider1)
+      expect(providers[2]).toEqual(testProvider3)
+    })
+  })
+
+  describe('when inclusion priorities are used', () => {
+    let [accessoryProvider1, accessoryProvider2, verySpecificProvider, mainProvider, defaultProvider] = []
+
+    beforeEach(() => {
+      atom.config.set('autocomplete-plus.enableBuiltinProvider', true)
+      providerManager = new ProviderManager()
+      providerManager.initialize()
+      defaultProvider = providerManager.defaultProvider
+
+      accessoryProvider1 = {
+        scopeSelector: '*',
+        inclusionPriority: 2,
+        getSuggestions (options) {},
+        dispose () {}
+      }
+
+      accessoryProvider2 = {
+        scopeSelector: '.source.js',
+        inclusionPriority: 2,
+        excludeLowerPriority: false,
+        getSuggestions (options) {},
+        dispose () {}
+      }
+
+      verySpecificProvider = {
+        scopeSelector: '.source.js .comment',
+        inclusionPriority: 2,
+        excludeLowerPriority: true,
+        getSuggestions (options) {},
+        dispose () {}
+      }
+
+      mainProvider = {
+        scopeSelector: '.source.js',
+        inclusionPriority: 1,
+        excludeLowerPriority: true,
+        getSuggestions (options) {},
+        dispose () {}
+      }
+
+      providerManager.registerProvider(accessoryProvider1)
+      providerManager.registerProvider(accessoryProvider2)
+      providerManager.registerProvider(verySpecificProvider)
+      providerManager.registerProvider(mainProvider)
+    })
+
+    it('returns the default provider and higher when nothing with a higher proirity is excluding the lower', () => {
+      let providers = providerManager.applicableProviders(['workspace-center'], '.source.coffee')
+      expect(providers).toHaveLength(2)
+      expect(providers[0]).toEqual(accessoryProvider1)
+      expect(providers[1]).toEqual(defaultProvider)
+    })
+
+    it('exclude the lower priority provider, the default, when one with a higher proirity excludes the lower', () => {
+      let providers = providerManager.applicableProviders(['workspace-center'], '.source.js')
+      expect(providers).toHaveLength(3)
+      expect(providers[0]).toEqual(accessoryProvider2)
+      expect(providers[1]).toEqual(mainProvider)
+      expect(providers[2]).toEqual(accessoryProvider1)
+    })
+
+    it('excludes the all lower priority providers when multiple providers of lower priority', () => {
+      let providers = providerManager.applicableProviders(['workspace-center'], '.source.js .comment')
+      expect(providers).toHaveLength(3)
+      expect(providers[0]).toEqual(verySpecificProvider)
+      expect(providers[1]).toEqual(accessoryProvider2)
+      expect(providers[2]).toEqual(accessoryProvider1)
+    })
+  })
+
+  describe('when suggestionPriorities are the same', () => {
+    let [provider1, provider2, provider3] = []
+    beforeEach(() => {
+      atom.config.set('autocomplete-plus.enableBuiltinProvider', true)
+      providerManager = new ProviderManager()
+      providerManager.initialize()
+
+      provider1 = {
+        scopeSelector: '*',
+        suggestionPriority: 2,
+        getSuggestions (options) {},
+        dispose () {}
+      }
+
+      provider2 = {
+        scopeSelector: '.source.js',
+        suggestionPriority: 3,
+        getSuggestions (options) {},
+        dispose () {}
+      }
+
+      provider3 = {
+        scopeSelector: '.source.js .comment',
+        suggestionPriority: 2,
+        getSuggestions (options) {},
+        dispose () {}
+      }
+
+      providerManager.registerProvider(provider1)
+      providerManager.registerProvider(provider2)
+      providerManager.registerProvider(provider3)
+    })
+
+    it('sorts by specificity', () => {
+      let providers = providerManager.applicableProviders(['workspace-center'], '.source.js .comment')
+      expect(providers).toHaveLength(4)
+      expect(providers[0]).toEqual(provider2)
+      expect(providers[1]).toEqual(provider3)
+      expect(providers[2]).toEqual(provider1)
+    })
+  })
+})
+
+var hasDisposable = (compositeDisposable, disposable) => {
+  if (compositeDisposable && compositeDisposable.disposables && compositeDisposable.disposables.has) {
+    return compositeDisposable.disposables.has(disposable)
+  }
+  if (compositeDisposable && compositeDisposable.disposables && compositeDisposable.disposables.indexOf) {
+    return compositeDisposable.disposables.indexOf(disposable) > -1
+  }
+
+  return false
+}
diff --git a/packages/autocomplete-plus/spec/spec-helper.js b/packages/autocomplete-plus/spec/spec-helper.js
new file mode 100644
index 000000000..bc0c4b9eb
--- /dev/null
+++ b/packages/autocomplete-plus/spec/spec-helper.js
@@ -0,0 +1,95 @@
+/* eslint-env jasmine */
+
+beforeEach(() => {
+  spyOn(atom.views, 'readDocument').andCallFake(fn => fn())
+  spyOn(atom.views, 'updateDocument').andCallFake(fn => fn())
+  atom.config.set('autocomplete-plus.minimumWordLength', 1)
+  atom.config.set('autocomplete-plus.suggestionListFollows', 'Word')
+  atom.config.set('autocomplete-plus.useCoreMovementCommands', true)
+  atom.config.set('autocomplete-plus.includeCompletionsFromAllBuffers', false)
+})
+
+function waitForAutocomplete (editor) {
+  const editorView = atom.views.getView(editor)
+
+  return conditionPromise(
+    () => editorView.querySelectorAll('.autocomplete-plus li').length > 0
+  )
+}
+
+function waitForAutocompleteToDisappear (editor) {
+  const editorView = atom.views.getView(editor)
+
+  return conditionPromise(
+    () => editorView.querySelectorAll('.autocomplete-plus li').length === 0
+  )
+}
+
+let triggerAutocompletion = (editor, moveCursor = true, char = 'f') => {
+  if (moveCursor) {
+    editor.moveToBottom()
+    editor.moveToBeginningOfLine()
+  }
+  editor.insertText(char)
+}
+
+async function waitForDeferredSuggestions (editorView, totalSuggestions) {
+  await conditionPromise(
+    () => editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list .suggestion-list-scroller')
+  )
+
+  const scroller = editorView.querySelector('.autocomplete-plus autocomplete-suggestion-list .suggestion-list-scroller')
+  scroller.scrollTo(0, 100)
+  scroller.scrollTo(0, 0)
+
+  await conditionPromise(
+    () => editorView.querySelectorAll('.autocomplete-plus li').length === totalSuggestions
+  )
+}
+
+let buildIMECompositionEvent = (event, {data, target} = {}) => {
+  event = new CustomEvent(event, {bubbles: true})
+  event.data = data
+  Object.defineProperty(event, 'target', {get () { return target }})
+  return event
+}
+
+let buildTextInputEvent = ({data, target}) => {
+  let event = new CustomEvent('textInput', {bubbles: true})
+  event.data = data
+  Object.defineProperty(event, 'target', {get () { return target }})
+  return event
+}
+
+async function conditionPromise (condition) {
+  const startTime = Date.now()
+
+  while (true) {
+    await timeoutPromise(100)
+
+    if (await condition()) {
+      return
+    }
+
+    if (Date.now() - startTime > 5000) {
+      throw new Error('Timed out waiting on condition')
+    }
+  }
+}
+
+function timeoutPromise (timeout) {
+  return new Promise(function (resolve) {
+    setTimeout(resolve, timeout)
+  })
+}
+
+module.exports = {
+  conditionPromise,
+  timeoutPromise,
+  triggerAutocompletion,
+  waitForAutocomplete,
+  waitForAutocompleteToDisappear,
+  buildIMECompositionEvent,
+  buildTextInputEvent,
+  waitForDeferredSuggestions
+}
diff --git a/packages/autocomplete-plus/spec/subsequence-provider-spec.js b/packages/autocomplete-plus/spec/subsequence-provider-spec.js
new file mode 100644
index 000000000..19694028a
--- /dev/null
+++ b/packages/autocomplete-plus/spec/subsequence-provider-spec.js
@@ -0,0 +1,440 @@
+/* eslint-env jasmine */
+
+const { conditionPromise } = require('./spec-helper')
+const path = require('path')
+
+let suggestionsForPrefix = async (provider, editor, prefix, options) => {
+  let bufferPosition = editor.getCursorBufferPosition()
+  let scopeDescriptor = editor.getLastCursor().getScopeDescriptor()
+  let suggestions = provider.getSuggestions({editor, bufferPosition, prefix, scopeDescriptor})
+  if (options && options.raw) {
+    return suggestions
+  } else {
+    if (suggestions) {
+      return (await suggestions).map(sug => sug.text)
+    } else {
+      return []
+    }
+  }
+}
+
+describe('SubsequenceProvider', () => {
+  let [editor, mainModule, autocompleteManager, provider] = []
+
+  beforeEach(async () => {
+    atom.workspace.project.setPaths([path.join(__dirname, 'fixtures')]);
+    jasmine.useRealClock()
+
+    // Set to live completion
+    atom.config.set('autocomplete-plus.enableAutoActivation', true)
+    atom.config.set('autocomplete-plus.defaultProvider', 'Subsequence')
+
+    // Set the completion delay
+    atom.config.set('autocomplete-plus.autoActivationDelay', 100)
+
+    let workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+
+    editor = await atom.workspace.open('sample.js')
+    await atom.packages.activatePackage('language-javascript')
+    mainModule = (await atom.packages.activatePackage('autocomplete-plus')).mainModule
+
+    await conditionPromise(() =>
+      mainModule.autocompleteManager && mainModule.autocompleteManager.ready
+    )
+    autocompleteManager = mainModule.autocompleteManager
+    provider = autocompleteManager.providerManager.defaultProvider
+  })
+
+  it('runs a completion ', async () => {
+    const suggestions = await suggestionsForPrefix(provider, editor, 'quick')
+    expect(suggestions).toContain('quicksort')
+  })
+
+  it('adds words to the symbol list after they have been written', async () => {
+    let suggestions = await suggestionsForPrefix(provider, editor, 'anew')
+    expect(suggestions).not.toContain('aNewFunction')
+
+    editor.insertText('function aNewFunction(){};')
+    editor.insertText(' ')
+    suggestions = await suggestionsForPrefix(provider, editor, 'anew')
+
+    expect(suggestions).toContain('aNewFunction')
+  })
+
+  it('adds words after they have been added to a scope that is not a direct match for the selector', async () => {
+    let suggestions = await suggestionsForPrefix(provider, editor, 'some')
+    expect(suggestions).not.toContain('somestring')
+
+    editor.insertText('abc = "somestring"')
+    editor.insertText(' ')
+    suggestions = await suggestionsForPrefix(provider, editor, 'some')
+
+    expect(suggestions).toContain('somestring')
+  })
+
+  it('removes words from the symbol list when they do not exist in the buffer', async () => {
+    editor.moveToBottom()
+    editor.moveToBeginningOfLine()
+
+    let suggestions = await suggestionsForPrefix(provider, editor, 'anew')
+    expect(suggestions).not.toContain('aNewFunction')
+
+    editor.insertText('function aNewFunction(){};')
+    editor.moveToEndOfLine()
+    suggestions = await suggestionsForPrefix(provider, editor, 'anew')
+
+    expect(suggestions).toContain('aNewFunction')
+
+    editor.setCursorBufferPosition([13, 21])
+    editor.backspace()
+    editor.moveToTop()
+    suggestions = await suggestionsForPrefix(provider, editor, 'anew')
+
+    expect(suggestions).toContain('aNewFunctio')
+    expect(suggestions).not.toContain('aNewFunction')
+  })
+
+  it('does not return the prefix as a suggestion', async () => {
+    atom.config.set('editor.nonWordCharacters', '-')
+    atom.config.set('autocomplete-plus.extraWordCharacters', '-')
+
+    editor.moveToBottom()
+    editor.insertText('--qu')
+
+    let suggestions = await suggestionsForPrefix(provider, editor, '--qu')
+
+    expect(suggestions).not.toContain('--qu')
+  })
+
+  it('does not return the word under the cursors when are multiple cursors', async () => {
+    editor.moveToBottom()
+    editor.setText('\n\n\n')
+    editor.setCursorBufferPosition([0, 0])
+    editor.addCursorAtBufferPosition([1, 0])
+    editor.addCursorAtBufferPosition([2, 0])
+    editor.insertText('omg')
+
+    const suggestions = await suggestionsForPrefix(provider, editor, 'omg')
+    expect(suggestions).not.toContain('omg')
+  })
+
+  it('does not output suggestions from the other buffer', async () => {
+    await atom.packages.activatePackage('language-coffee-script')
+    const coffeeEditor = await atom.workspace.open('sample.coffee')
+    const suggestions = await suggestionsForPrefix(provider, coffeeEditor, 'item')
+
+    expect(suggestions).toHaveLength(0)
+  })
+
+  describe('search range', () => {
+    it('includes the full range when the buffer is smaller than the max range', () => {
+      const range = provider.clampedRange(500, 25, 100)
+      expect(range.start.row).toBeLessThan(0)
+      expect(range.end.row).toBeGreaterThan(100)
+    })
+
+    it('returns the expected result when cursor is close to end of large buffer', () => {
+      const range = provider.clampedRange(100, 450, 500)
+      expect(range.start.row).toBeLessThan(350)
+    })
+
+    it('returns the expected result when cursor is close to beginning of large buffer', () => {
+      const range = provider.clampedRange(100, 50, 500)
+      expect(range.end.row).toBeGreaterThan(100)
+    })
+  })
+
+  describe('when autocomplete-plus.minimumWordLength is > 1', () => {
+    beforeEach(() => atom.config.set('autocomplete-plus.minimumWordLength', 3))
+
+    it('only returns results when the prefix is at least the min word length', async () => {
+      editor.insertText('function aNewFunction(){};')
+
+      const results = await Promise.all([
+        '',
+        'a',
+        'an',
+        'ane',
+        'anew'
+      ].map(text => suggestionsForPrefix(provider, editor, text)))
+
+      expect(results[0]).not.toContain('aNewFunction')
+      expect(results[1]).not.toContain('aNewFunction')
+      expect(results[2]).not.toContain('aNewFunction')
+      expect(results[3]).toContain('aNewFunction')
+      expect(results[4]).toContain('aNewFunction')
+    })
+  })
+
+  describe('when autocomplete-plus.minimumWordLength is 0', () => {
+    beforeEach(() => atom.config.set('autocomplete-plus.minimumWordLength', 0))
+
+    it('only returns results when the prefix is at least the min word length', async () => {
+      editor.insertText('function aNewFunction(){};')
+      const testResultPairs = [
+          ['', false],
+          ['a', true],
+          ['an', true],
+          ['ane', true],
+          ['anew', true]
+      ]
+
+      const results = await Promise.all(
+        testResultPairs.map(t => suggestionsForPrefix(provider, editor, t[0]))
+      )
+
+      results.forEach((result, idx) => {
+        if (testResultPairs[idx][1]) {
+          expect(result).toContain('aNewFunction')
+        } else {
+          expect(result).not.toContain('aNewFunction')
+        }
+      })
+    })
+  })
+
+  describe("when the editor's path changes", () => {
+    it('continues to track changes on the new path', async () => {
+      let buffer = editor.getBuffer()
+
+      expect(provider.watchedBuffers.get(buffer)).toBe(editor)
+
+      let suggestions = await suggestionsForPrefix(provider, editor, 'qu')
+      expect(suggestions).toContain('quicksort')
+      buffer.setPath('cats.js')
+      expect(provider.watchedBuffers.get(buffer)).toBe(editor)
+      editor.moveToBottom()
+      editor.moveToBeginningOfLine()
+
+      const results = await Promise.all([
+        suggestionsForPrefix(provider, editor, 'qu'),
+        suggestionsForPrefix(provider, editor, 'anew')
+      ])
+
+      expect(results[0]).toContain('quicksort')
+      expect(results[1]).not.toContain('aNewFunction')
+      editor.insertText('function aNewFunction(){};')
+      suggestions = await suggestionsForPrefix(provider, editor, 'anew')
+
+      expect(suggestions).toContain('aNewFunction')
+    })
+  })
+
+  describe('when editor.nonWordCharacters changes', () => {
+    it('includes characters that are included in the `autocomplete-plus.extraWordCharacters` setting or not excluded in the `editor.nonWordCharacters` setting', async () => {
+      const scopeSelector = editor.getLastCursor().getScopeDescriptor().getScopeChain()
+      editor.insertText('good$noodles good-beef ')
+
+      atom.config.set('editor.nonWordCharacters', '$-', {scopeSelector})
+      let sugs = await suggestionsForPrefix(provider, editor, 'good')
+      expect(sugs).not.toContain('good$noodles')
+      expect(sugs).not.toContain('good-beef')
+
+      atom.config.set('autocomplete-plus.extraWordCharacters', '-', {scopeSelector})
+      sugs = await suggestionsForPrefix(provider, editor, 'good')
+      expect(sugs).toContain('good-beef')
+      expect(sugs).not.toContain('good$noodles')
+
+      atom.config.set('editor.nonWordCharacters', '-', {scopeSelector})
+      sugs = await suggestionsForPrefix(provider, editor, 'good')
+      expect(sugs).toContain('good-beef')
+      expect(sugs).toContain('good$noodles')
+    })
+  })
+
+  describe('when includeCompletionsFromAllBuffers is enabled', () => {
+    beforeEach(async () => {
+      atom.config.set('autocomplete-plus.includeCompletionsFromAllBuffers', true)
+
+      await atom.packages.activatePackage('language-coffee-script')
+      editor = await atom.workspace.open('sample.coffee')
+    })
+
+    afterEach(() => {
+      atom.config.set('autocomplete-plus.includeCompletionsFromAllBuffers', false)
+    })
+
+    it('outputs unique suggestions', async () => {
+      editor.setCursorBufferPosition([7, 0])
+
+      const suggestions = await suggestionsForPrefix(provider, editor, 'qu')
+      expect(suggestions).toHaveLength(2)
+    })
+
+    it('outputs suggestions from the other buffer', async () => {
+      editor.setCursorBufferPosition([7, 0])
+
+      const suggestions = await suggestionsForPrefix(provider, editor, 'item')
+      expect(suggestions[0]).toBe('items')
+    })
+  })
+
+  // TODO: commenting this out because I'm not sure what it's trying to test
+  //       just remove it? (This was brought over from the symbol provider spec.)
+  //   describe('when the autocomplete.symbols changes between scopes', () => {
+  //     beforeEach(() => {
+  //       editor.setText(`// in-a-comment
+  // inVar = "in-a-string"`
+  //       )
+  //       waitForBufferToStopChanging()
+  //
+  //       let commentConfig = {
+  //         incomment: {
+  //           selector: '.comment'
+  //         }
+  //       }
+  //
+  //       let stringConfig = {
+  //         instring: {
+  //           selector: '.string'
+  //         }
+  //       }
+  //
+  //       atom.config.set('autocomplete.symbols', commentConfig, {scopeSelector: '.source.js .comment'})
+  //       atom.config.set('autocomplete.symbols', stringConfig, {scopeSelector: '.source.js .string'})
+  //     })
+  //
+  //     it('uses the config for the scope under the cursor', () => {
+  //       // Using the comment config
+  //       editor.setCursorBufferPosition([0, 2])
+  //
+  //       waitsForPromise(() =>
+  //         suggestionsForPrefix(provider, editor, 'in', {raw: true}).then(sugs => {
+  //           expect(sugs).toHaveLength(1)
+  //           expect(sugs[0].text).toBe('in-a-comment')
+  //           expect(sugs[0].type).toBe('incomment')
+  //
+  //           // Using the string config
+  //           editor.setCursorBufferPosition([1, 20])
+  //           editor.insertText(' ')
+  //           waitForBufferToStopChanging()
+  //
+  //           return suggestionsForPrefix(provider, editor, 'in', {raw: true})
+  //         }).then(sugs => {
+  //           expect(sugs).toHaveLength(1)
+  //           expect(sugs[0].text).toBe('in-a-string')
+  //           expect(sugs[0].type).toBe('instring')
+  //
+  //           editor.setCursorBufferPosition([1, Infinity])
+  //           editor.insertText(' ')
+  //           waitForBufferToStopChanging()
+  //
+  //           return suggestionsForPrefix(provider, editor, 'in', {raw: true})
+  //         }).then(sugs => {
+  //           expect(sugs).toHaveLength(3)
+  //           expect(sugs[0].text).toBe('inVar')
+  //           expect(sugs[0].type).toBe('')
+  //         })
+  //       )
+  //     })
+  //   })
+  //
+  //   describe('when the config contains a list of suggestion strings', () => {
+  //     beforeEach(() => {
+  //       editor.setText('// abcomment')
+  //       waitForBufferToStopChanging()
+  //
+  //       let commentConfig = {
+  //         comment: { selector: '.comment' },
+  //         builtin: {
+  //           suggestions: ['abcd', 'abcde', 'abcdef']
+  //         }
+  //       }
+  //
+  //       atom.config.set('autocomplete.symbols', commentConfig, {scopeSelector: '.source.js .comment'})
+  //     })
+  //
+  //     it('adds the suggestions to the results', () => {
+  //       // Using the comment config
+  //       editor.setCursorBufferPosition([0, 2])
+  //
+  //       waitsForPromise(() =>
+  //         suggestionsForPrefix(provider, editor, 'ab', {raw: true}).then(suggestions => {
+  //           expect(suggestions).toHaveLength(4)
+  //           expect(suggestions[0].text).toBe('abcomment')
+  //           expect(suggestions[0].type).toBe('comment')
+  //           expect(suggestions[1].text).toBe('abcdef')
+  //           expect(suggestions[1].type).toBe('builtin')
+  //         })
+  //       )
+  //     })
+  //   })
+
+  describe('when the symbols config contains a list of suggestion objects', () => {
+    beforeEach(() => {
+      editor.setText('// abcomment')
+
+      let commentConfig = {
+        comment: { selector: '.comment' },
+        builtin: {
+          suggestions: [
+              {nope: 'nope1', rightLabel: 'will not be added to the suggestions'},
+              {text: 'abcd', rightLabel: 'one', type: 'function'},
+              []
+          ]
+        }
+      }
+      atom.config.set('autocomplete.symbols', commentConfig, {scopeSelector: '.source.js .comment'})
+    })
+
+    it('adds the suggestion objects to the results', async () => {
+        // Using the comment config
+      editor.setCursorBufferPosition([0, 2])
+
+      const suggestions = await suggestionsForPrefix(provider, editor, 'ab', {raw: true})
+
+      expect(suggestions).toHaveLength(2)
+      expect(suggestions[0].text).toBe('abcd')
+      expect(suggestions[0].type).toBe('function')
+      expect(suggestions[0].rightLabel).toBe('one')
+      expect(suggestions[1].text).toBe('abcomment')
+      expect(suggestions[1].type).toBe('comment')
+    })
+  })
+
+  describe('when the legacy completions array is used', () => {
+    beforeEach(() => {
+      editor.setText('// abcomment')
+      atom.config.set('editor.completions', ['abcd', 'abcde', 'abcdef'], {scopeSelector: '.source.js .comment'})
+    })
+
+    it('uses the config for the scope under the cursor', async () => {
+        // Using the comment config
+      editor.setCursorBufferPosition([0, 2])
+
+      const suggestions = await suggestionsForPrefix(provider, editor, 'ab', {raw: true})
+
+      expect(suggestions).toHaveLength(4)
+      expect(suggestions[0].text).toBe('abcd')
+      expect(suggestions[0].type).toBe('builtin')
+      expect(suggestions[3].text).toBe('abcomment')
+      expect(suggestions[3].type).toBe('')
+    })
+  })
+
+  it('adds words to the wordlist with unicode characters', async () => {
+    atom.config.set('autocomplete-plus.enableExtendedUnicodeSupport', true)
+
+    let suggestions = await suggestionsForPrefix(provider, editor, 'somē', {raw: true})
+    expect(suggestions).toHaveLength(0)
+
+    editor.insertText('somēthingNew')
+    editor.insertText(' ')
+    suggestions = await suggestionsForPrefix(provider, editor, 'somē', {raw: true})
+
+    expect(suggestions).toHaveLength(1)
+  })
+
+  it('does not throw errors when findWordsWithSubsequence jobs are cancelled due to rapid buffer changes', async () => {
+    editor.setText('')
+
+    const promises = []
+    for (let i = 0; i < 50; i++) {
+      editor.insertText('x')
+      promises.push(suggestionsForPrefix(provider, editor, editor.getText(), {raw: true}))
+    }
+
+    await Promise.all(promises)
+  })
+})
diff --git a/packages/autocomplete-plus/spec/suggestion-list-element-spec.js b/packages/autocomplete-plus/spec/suggestion-list-element-spec.js
new file mode 100644
index 000000000..bf056c814
--- /dev/null
+++ b/packages/autocomplete-plus/spec/suggestion-list-element-spec.js
@@ -0,0 +1,438 @@
+/* eslint-env jasmine */
+/* eslint-disable no-template-curly-in-string */
+const SuggestionListElement = require('../lib/suggestion-list-element')
+
+const fragmentToHtml = fragment => {
+  const el = document.createElement('span')
+  el.appendChild(fragment.cloneNode(true))
+  return el.innerHTML
+}
+
+describe('Suggestion List Element', () => {
+  let [suggestionListElement] = []
+
+  beforeEach(() => { suggestionListElement = new SuggestionListElement() })
+
+  afterEach(() => {
+    if (suggestionListElement) {
+      suggestionListElement.dispose()
+    }
+    suggestionListElement = null
+  })
+
+  describe('renderItem', () => {
+    beforeEach(() => jasmine.attachToDOM(suggestionListElement.element))
+
+    it('HTML escapes displayText', () => {
+      let suggestion = {text: 'Animal<Cat>'}
+      suggestionListElement.renderItem(suggestion)
+      expect(suggestionListElement.selectedLi.innerHTML).toContain('Animal&lt;Cat&gt;')
+
+      suggestion = {text: 'Animal<Cat>', displayText: 'Animal<Cat>'}
+      suggestionListElement.renderItem(suggestion)
+      expect(suggestionListElement.selectedLi.innerHTML).toContain('Animal&lt;Cat&gt;')
+
+      suggestion = {snippet: 'Animal<Cat>', displayText: 'Animal<Cat>'}
+      suggestionListElement.renderItem(suggestion)
+      expect(suggestionListElement.selectedLi.innerHTML).toContain('Animal&lt;Cat&gt;')
+    })
+
+    it('HTML escapes snippets', () => {
+      let suggestion = {snippet: 'Animal<Cat>(${1:omg<wow>}, ${2:ok<yeah>})'}
+      suggestionListElement.renderItem(suggestion)
+      expect(suggestionListElement.selectedLi.innerHTML).toContain('Animal&lt;Cat&gt;')
+      expect(suggestionListElement.selectedLi.innerHTML).toContain('omg&lt;wow&gt;')
+      expect(suggestionListElement.selectedLi.innerHTML).toContain('ok&lt;yeah&gt;')
+
+      suggestion = {
+        snippet: 'Animal<Cat>(${1:omg<wow>}, ${2:ok<yeah>})',
+        displayText: 'Animal<Cat>(omg<wow>, ok<yeah>)'
+      }
+      suggestionListElement.renderItem(suggestion)
+      expect(suggestionListElement.selectedLi.innerHTML).toContain('Animal&lt;Cat&gt;')
+      expect(suggestionListElement.selectedLi.innerHTML).toContain('omg&lt;wow&gt;')
+      expect(suggestionListElement.selectedLi.innerHTML).toContain('ok&lt;yeah&gt;')
+    })
+
+    it('HTML escapes labels', () => {
+      let suggestion = {text: 'something', leftLabel: 'Animal<Cat>', rightLabel: 'Animal<Dog>'}
+      suggestionListElement.renderItem(suggestion)
+      expect(suggestionListElement.selectedLi.querySelector('.left-label').innerHTML).toContain('Animal&lt;Cat&gt;')
+      return expect(suggestionListElement.selectedLi.querySelector('.right-label').innerHTML).toContain('Animal&lt;Dog&gt;')
+    })
+  })
+
+  describe('itemChanged', () => {
+    beforeEach(() => jasmine.attachToDOM(suggestionListElement.element))
+
+    it('updates the list item', async () => {
+      jasmine.useRealClock()
+
+      const suggestion = {text: 'foo'}
+      const newSuggestion = {text: 'foo', description: 'foobar', rightLabel: 'foo'}
+      suggestionListElement.model = {items: [newSuggestion]}
+      suggestionListElement.selectedIndex = 0
+      suggestionListElement.renderItem(suggestion, 0)
+      expect(suggestionListElement.element.querySelector('.right-label').innerText).toBe('')
+
+      suggestionListElement.itemChanged({suggestion: newSuggestion, index: 0})
+
+      expect(suggestionListElement.element.querySelector('.right-label').innerText)
+        .toBe('foo')
+
+      expect(suggestionListElement.element.querySelector('.suggestion-description-content').innerText)
+        .toBe('foobar')
+    })
+  })
+
+  describe('getDisplayHTML', () => {
+    it('uses displayText over text or snippet', () => {
+      let text = 'abcd()'
+      let snippet
+      let displayText = 'acd'
+      let replacementPrefix = 'a'
+      let html = suggestionListElement.getDisplayFragment(text, snippet, displayText, replacementPrefix)
+      expect(fragmentToHtml(html)).toBe('<span class="character-match">a</span>cd')
+    })
+
+    it('handles the empty string in the text field', () => {
+      let text = ''
+      let snippet
+      let replacementPrefix = 'a'
+      let html = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(html)).toBe('')
+    })
+
+    it('handles the empty string in the snippet field', () => {
+      let text
+      let snippet = ''
+      let replacementPrefix = 'a'
+      let html = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(html)).toBe('')
+    })
+
+    it('handles an empty prefix', () => {
+      let text
+      let snippet = 'abc'
+      let replacementPrefix = ''
+      let html = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(html)).toBe('abc')
+    })
+
+    it('outputs correct html when there are no snippets in the snippet field', () => {
+      let text = ''
+      let snippet = 'abc(d, e)f'
+      let replacementPrefix = 'a'
+      let html = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(html)).toBe('<span class="character-match">a</span>bc(d, e)f')
+    })
+
+    it('outputs correct html when there are not character matches', () => {
+      let text = ''
+      let snippet = 'abc(d, e)f'
+      let replacementPrefix = 'omg'
+      let html = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(html)).toBe('abc(d, e)f')
+    })
+
+    it('outputs correct html when the text field is used', () => {
+      let text = 'abc(d, e)f'
+      let snippet
+      let replacementPrefix = 'a'
+      let html = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(html)).toBe('<span class="character-match">a</span>bc(d, e)f')
+    })
+
+    it('replaces a snippet with no escaped right braces', () => {
+      let text = ''
+      let snippet = 'abc(${1:d}, ${2:e})f'
+      let replacementPrefix = 'a'
+      let html = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(html)).toBe('<span class="character-match">a</span>bc(<span class="snippet-completion">d</span>, <span class="snippet-completion">e</span>)f')
+    })
+
+    it('replaces a snippet with no escaped right braces', () => {
+      let text = ''
+      let snippet = 'text(${1:ab}, ${2:cd})'
+      let replacementPrefix = 'ta'
+      let html = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(html)).toBe('<span class="character-match">t</span>ext(<span class="snippet-completion"><span class="character-match">a</span>b</span>, <span class="snippet-completion">cd</span>)')
+    })
+
+    it('replaces a snippet with escaped right braces', () => {
+      let text = ''
+      let snippet = 'abc(${1:d}, ${2:e})f ${3:interface{\\}}'
+      let replacementPrefix = 'a'
+      let display = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(display)).toBe('<span class="character-match">a</span>bc(<span class="snippet-completion">d</span>, <span class="snippet-completion">e</span>)f <span class="snippet-completion">interface{}</span>')
+    })
+
+    it('replaces a snippet with escaped multiple right braces', () => {
+      let text = ''
+      let snippet = 'abc(${1:d}, ${2:something{ok\\}}, ${3:e})f ${4:interface{\\}}'
+      let replacementPrefix = 'a'
+      let display = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(display)).toBe('<span class="character-match">a</span>bc(<span class="snippet-completion">d</span>, <span class="snippet-completion">something{ok}</span>, <span class="snippet-completion">e</span>)f <span class="snippet-completion">interface{}</span>')
+    })
+
+    it('replaces a snippet with elements that have no text', () => {
+      let text = ''
+      let snippet = 'abc(${1:d}, ${2:e})f${3}'
+      let replacementPrefix = 'a'
+      let display = suggestionListElement.getDisplayFragment(text, snippet, null, replacementPrefix)
+      expect(fragmentToHtml(display)).toBe('<span class="character-match">a</span>bc(<span class="snippet-completion">d</span>, <span class="snippet-completion">e</span>)f')
+    })
+  })
+
+  describe('findCharacterMatches', () => {
+    let assertMatches = (text, replacementPrefix, truthyIndices) => {
+      text = suggestionListElement.removeEmptySnippets(text)
+      let snippets = suggestionListElement.snippetParser.findSnippets(text)
+      text = suggestionListElement.removeSnippetsFromText(snippets, text)
+      let matches = suggestionListElement.findCharacterMatchIndices(text, replacementPrefix)
+
+      for (var i = 0; i <= text.length; i++) {
+        if (truthyIndices.indexOf(i) !== -1) {
+          expect(matches[i]).toBeTruthy()
+        } else {
+          let m = matches
+          if (m) {
+            m = m[i]
+          }
+          expect(m).toBeFalsy()
+        }
+      }
+    }
+
+    it('finds matches when no snippets exist', () => {
+      assertMatches('hello', '', [])
+      assertMatches('hello', 'h', [0])
+      assertMatches('hello', 'hl', [0, 2])
+      assertMatches('hello', 'hlo', [0, 2, 4])
+    })
+
+    it('finds matches when snippets exist', () => {
+      assertMatches('${0:hello}', '', [])
+      assertMatches('${0:hello}', 'h', [0])
+      assertMatches('${0:hello}', 'hl', [0, 2])
+      assertMatches('${0:hello}', 'hlo', [0, 2, 4])
+      assertMatches('${0:hello}world', '', [])
+      assertMatches('${0:hello}world', 'h', [0])
+      assertMatches('${0:hello}world', 'hw', [0, 5])
+      assertMatches('${0:hello}world', 'hlw', [0, 2, 5])
+      assertMatches('hello${0:world}', '', [])
+      assertMatches('hello${0:world}', 'h', [0])
+      assertMatches('hello${0:world}', 'hw', [0, 5])
+      assertMatches('hello${0:world}', 'hlw', [0, 2, 5])
+    })
+  })
+
+  describe('removeEmptySnippets', () => {
+    it('removes an empty snippet group', () => {
+      expect(suggestionListElement.removeEmptySnippets('$0')).toBe('')
+      expect(suggestionListElement.removeEmptySnippets('$1000')).toBe('')
+    })
+
+    it('removes an empty snippet group with surrounding text', () => {
+      expect(suggestionListElement.removeEmptySnippets('hello$0')).toBe('hello')
+      expect(suggestionListElement.removeEmptySnippets('$0hello')).toBe('hello')
+      expect(suggestionListElement.removeEmptySnippets('hello$0hello')).toBe('hellohello')
+      expect(suggestionListElement.removeEmptySnippets('hello$1000hello')).toBe('hellohello')
+    })
+
+    it('removes an empty snippet group with braces', () => {
+      expect(suggestionListElement.removeEmptySnippets('${0}')).toBe('')
+      expect(suggestionListElement.removeEmptySnippets('${1000}')).toBe('')
+    })
+
+    it('removes an empty snippet group with braces with surrounding text', () => {
+      expect(suggestionListElement.removeEmptySnippets('hello${0}')).toBe('hello')
+      expect(suggestionListElement.removeEmptySnippets('${0}hello')).toBe('hello')
+      expect(suggestionListElement.removeEmptySnippets('hello${0}hello')).toBe('hellohello')
+      expect(suggestionListElement.removeEmptySnippets('hello${1000}hello')).toBe('hellohello')
+    })
+
+    it('removes an empty snippet group with braces and a colon', () => {
+      expect(suggestionListElement.removeEmptySnippets('${0:}')).toBe('')
+      expect(suggestionListElement.removeEmptySnippets('${1000:}')).toBe('')
+    })
+
+    it('removes an empty snippet group with braces and a colon with surrounding text', () => {
+      expect(suggestionListElement.removeEmptySnippets('hello${0:}')).toBe('hello')
+      expect(suggestionListElement.removeEmptySnippets('${0:}hello')).toBe('hello')
+      expect(suggestionListElement.removeEmptySnippets('hello${0:}hello')).toBe('hellohello')
+      expect(suggestionListElement.removeEmptySnippets('hello${1000:}hello')).toBe('hellohello')
+    })
+  })
+
+  describe('moveSelectionUp', () => {
+    it('decreases the selected index when the current index is greater than zero', () => {
+      spyOn(suggestionListElement, 'setSelectedIndex')
+      suggestionListElement.selectedIndex = 1
+
+      suggestionListElement.moveSelectionUp()
+
+      expect(suggestionListElement.setSelectedIndex).toHaveBeenCalledWith(0)
+    })
+
+    it('dismisses the suggestion list if the current selection is at the start of the list and moveToCancel is true', () => {
+      const model = {
+        activeEditor: {
+          moveUp () {}
+        },
+        cancel () {}
+      }
+      spyOn(model.activeEditor, 'moveUp')
+      spyOn(model, 'cancel')
+
+      suggestionListElement.model = model
+      suggestionListElement.selectedIndex = 0
+      suggestionListElement.moveToCancel = true
+
+      suggestionListElement.moveSelectionUp()
+
+      expect(model.activeEditor.moveUp).toHaveBeenCalledWith(1)
+      expect(model.cancel).toHaveBeenCalled()
+    })
+
+    it('cycles to the last element in the suggestion list when the current selection is at the start of the list', () => {
+      spyOn(suggestionListElement, 'visibleItems').andReturn(['a', 'b', 'c', 'd', 'e'])
+      spyOn(suggestionListElement, 'setSelectedIndex')
+
+      suggestionListElement.moveSelectionUp()
+
+      expect(suggestionListElement.setSelectedIndex).toHaveBeenCalledWith(4)
+    })
+  })
+
+  describe('moveSelectionDown', () => {
+    it('increases the selected index if the current selection is not at the end of the list', () => {
+      spyOn(suggestionListElement, 'visibleItems').andReturn(['a', 'b', 'c', 'd', 'e'])
+      spyOn(suggestionListElement, 'setSelectedIndex')
+      suggestionListElement.selectedIndex = 3
+
+      suggestionListElement.moveSelectionDown()
+
+      expect(suggestionListElement.setSelectedIndex).toHaveBeenCalledWith(4)
+    })
+
+    it('dismisses the suggestion list if the current selection is at the end of the list and moveToCancel is true', () => {
+      const model = {
+        activeEditor: {
+          moveDown () {}
+        },
+        cancel () {}
+      }
+      spyOn(model.activeEditor, 'moveDown')
+      spyOn(model, 'cancel')
+      spyOn(suggestionListElement, 'visibleItems').andReturn(['a', 'b', 'c', 'd', 'e'])
+
+      suggestionListElement.model = model
+      suggestionListElement.selectedIndex = 4
+      suggestionListElement.moveToCancel = true
+
+      suggestionListElement.moveSelectionDown()
+
+      expect(model.activeEditor.moveDown).toHaveBeenCalledWith(1)
+      expect(model.cancel).toHaveBeenCalled()
+    })
+
+    it('cycles to the first element in the suggestion list when the current suggestion is at the end of the list', () => {
+      spyOn(suggestionListElement, 'visibleItems').andReturn(['a', 'b', 'c', 'd', 'e'])
+      spyOn(suggestionListElement, 'setSelectedIndex')
+      suggestionListElement.selectedIndex = 4
+
+      suggestionListElement.moveSelectionDown()
+
+      expect(suggestionListElement.setSelectedIndex).toHaveBeenCalledWith(0)
+    })
+  })
+
+  describe('moveSelectionPageUp', () => {
+    it('dismisses the list if moveToCancel is true', () => {
+      const model = {
+        activeEditor: {
+          getScreenLineCount: () => 42,
+          moveUp () {}
+        },
+        cancel () {}
+      }
+      spyOn(model.activeEditor, 'moveUp')
+      spyOn(model, 'cancel')
+
+      suggestionListElement.model = model
+      suggestionListElement.moveToCancel = true
+
+      suggestionListElement.moveSelectionPageUp()
+
+      expect(model.activeEditor.moveUp).toHaveBeenCalledWith(42)
+      expect(model.cancel).toHaveBeenCalled()
+    })
+  })
+
+  describe('moveSelectionPageDown', () => {
+    it('dismisses the list if moveToCancel is true', () => {
+      const model = {
+        activeEditor: {
+          getScreenLineCount: () => 42,
+          moveDown () {}
+        },
+        cancel () {}
+      }
+      spyOn(model.activeEditor, 'moveDown')
+      spyOn(model, 'cancel')
+      spyOn(suggestionListElement, 'visibleItems').andReturn(['a'])
+
+      suggestionListElement.model = model
+      suggestionListElement.moveToCancel = true
+
+      suggestionListElement.moveSelectionPageDown()
+
+      expect(model.activeEditor.moveDown).toHaveBeenCalledWith(42)
+      expect(model.cancel).toHaveBeenCalled()
+    })
+  })
+
+  describe('moveSelectionToTop', () => {
+    it('dismisses the list if moveToCancel is true', () => {
+      const model = {
+        activeEditor: {
+          moveToTop () {}
+        },
+        cancel () {}
+      }
+      spyOn(model.activeEditor, 'moveToTop')
+      spyOn(model, 'cancel')
+
+      suggestionListElement.model = model
+      suggestionListElement.moveToCancel = true
+
+      suggestionListElement.moveSelectionToTop()
+
+      expect(model.activeEditor.moveToTop).toHaveBeenCalled()
+      expect(model.cancel).toHaveBeenCalled()
+    })
+  })
+
+  describe('moveSelectionToBottom', () => {
+    it('dismisses the list if moveToCancel is true', () => {
+      const model = {
+        activeEditor: {
+          moveToBottom () {}
+        },
+        cancel () {}
+      }
+      spyOn(model.activeEditor, 'moveToBottom')
+      spyOn(model, 'cancel')
+      spyOn(suggestionListElement, 'visibleItems').andReturn(['a'])
+
+      suggestionListElement.model = model
+      suggestionListElement.moveToCancel = true
+
+      suggestionListElement.moveSelectionToBottom()
+
+      expect(model.activeEditor.moveToBottom).toHaveBeenCalled()
+      expect(model.cancel).toHaveBeenCalled()
+    })
+  })
+})
diff --git a/packages/autocomplete-plus/styles/autocomplete.less b/packages/autocomplete-plus/styles/autocomplete.less
new file mode 100644
index 000000000..5a2d68493
--- /dev/null
+++ b/packages/autocomplete-plus/styles/autocomplete.less
@@ -0,0 +1,232 @@
+// TODO: remove this fallback when 193 is out for a while
+.attr-syntax-color() { @syntax-color-attribute: #888; } .attr-syntax-color();
+
+@import "ui-variables";
+@import "syntax-variables";
+
+@font-size-small: .9em;
+@type-icon-font-size: 1em;
+@type-letter-icon-font-size: @font-size-small;
+@row-line-height: 2em;
+@item-padding: .75em;
+@item-side-padding: .6em;
+
+atom-overlay.autocomplete-plus {
+  z-index: 12; // higher than docks
+}
+
+autocomplete-suggestion-list.select-list.popover-list {
+  width: auto !important; // TODO: Can be removed once the inline style is gone
+  display: inline-block;
+  min-width: 243px; // Try and fail until the specs pass
+  padding: 0;
+  overflow: hidden;
+  color: @text-color;
+
+  .suggestion-list-scroller {
+    overflow-y: auto;
+  }
+
+  .suggestion-description {
+    padding: 5px 0;
+    padding-left: @item-side-padding;
+    padding-right: @item-side-padding;
+    min-height: @row-line-height;
+    line-height: 1.3;
+    background: darken(@overlay-background-color, 4%);
+    border-radius: 0 0 @component-border-radius @component-border-radius;
+
+    // let the other sibling decide how large the container should be
+    width: min-content;
+    min-width: 100%;
+  }
+
+  .suggestion-description-content {
+    font-size: @font-size + 1px;
+    font-family: @font-family;
+    max-height: 33vh;
+    display: block;
+    overflow-y: auto;
+    white-space: pre-wrap;
+  }
+
+  .suggestion-description-more-link {
+    font-size: @font-size + 1px;
+    font-family: @font-family;
+    color: @text-color-info;
+  }
+
+  input {
+    position: absolute;
+    opacity: 0.00;
+  }
+
+  ol.list-group {
+    margin-top: 0;
+    display: table;
+    width: 100%;
+    margin-right: 10px; // Needed to prevent horizontal scrolling when right label is too long
+
+    li {
+      display: table-row;
+      color: @text-color;
+      line-height: @row-line-height;
+
+      > span {
+        display: table-cell;
+        vertical-align: middle;
+      }
+
+      &:after {
+        clear: both;
+        display: block;
+        content: ' ';
+      }
+
+      &.selected {
+        .word {
+          color: fadeout(@text-color-selected, 20%);
+        }
+        .character-match {
+          color: @text-color-selected;
+        }
+        .left-label, .right-label, .snippet-completion {
+          color: fadeout(@text-color-selected, 50%);
+        }
+      }
+    }
+  }
+}
+
+autocomplete-suggestion-list {
+  .icon-container {
+    width: @row-line-height;
+    padding-left: 0;
+    padding-right: @item-padding;
+    &:empty {
+      width: @item-side-padding;
+      padding: 0;
+    }
+  }
+
+  .icon {
+    display: block;
+    width: @row-line-height;
+    line-height: @row-line-height;
+    text-align: center;
+    font-style: normal;
+    font-weight: bold;
+
+    color: @text-color-subtle;
+    background: fadeout(@text-color, 90%);
+
+    &:empty { display: none; }
+    > *::before {
+      font-size: @type-icon-font-size;
+      width: @type-icon-font-size;
+      height: @type-icon-font-size;
+    }
+
+    .icon-letter {
+      // I'm failing to vert center these letters. So shift them up...
+      position: relative;
+      top: -.1em;
+      font-size: @type-letter-icon-font-size;
+      line-height: @type-letter-icon-font-size;
+    }
+  }
+
+  .left-label {
+    text-align: right;
+    padding-right: @item-padding;
+    vertical-align: middle;
+
+    font-size: @font-size-small;
+    color: @text-color-subtle;
+
+    &:empty {
+      padding-right: 0;
+    }
+  }
+
+  .right-label {
+    padding-right: @item-padding;
+    font-size: @font-size-small;
+    color: @text-color-subtle;
+
+    &:empty {
+      padding-right: 0;
+    }
+  }
+
+  .word-container {
+    padding-right: @item-padding;
+  }
+
+  .word {
+    float: left;
+  }
+
+  .character-match {
+    font-weight: bold;
+    color: @text-color-highlight;
+  }
+
+  .snippet-completion {
+    color: @text-color-subtle;
+  }
+
+  // Here we set the max width of the popup
+  .left-label {
+    max-width: 20vw;
+  }
+  .word {
+    max-width: 35vw;
+  }
+  .right-label {
+    max-width: 25vw;
+  }
+
+  .word, .left-label, .right-label {
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .make-type-icon(attribute, @syntax-color-attribute);
+  .make-type-icon(builtin, @syntax-color-keyword);
+  .make-type-icon(class, @syntax-color-class);
+  .make-type-icon(constant, @syntax-color-constant);
+  .make-type-icon(function, @syntax-color-function);
+  .make-type-icon(import, @syntax-color-import);
+  .make-type-icon(keyword, @syntax-color-keyword);
+  .make-type-icon(method, @syntax-color-method);
+  .make-type-icon(module, @syntax-color-import);
+  .make-type-icon(mixin, @syntax-color-class);
+  .make-type-icon(package, @syntax-color-import);
+  .make-type-icon(property, @syntax-color-property);
+  .make-type-icon(require, @syntax-color-import);
+  .make-type-icon(snippet, @syntax-color-snippet);
+  .make-type-icon(tag, @syntax-color-tag);
+  .make-type-icon(type, @syntax-color-class);
+  .make-type-icon(value, @syntax-color-value);
+  .make-type-icon(variable, @syntax-color-variable);
+  .make-type-icon(selector, @syntax-color-attribute);
+  .make-type-icon(pseudo-selector, @syntax-color-attribute);
+}
+
+.make-type-icon(@type, @color) {
+  .icon.@{type} {
+    color: @color;
+    background: fadeout(@color, 80%)
+  }
+}
+.make-type-icon(@type, @color)
+  when (hsvvalue(@color) - hsvvalue(@overlay-background-color) > -20)
+  and (hsvvalue(@color) - hsvvalue(@overlay-background-color) < 20) {
+  .icon.@{type} {
+    @corrected-color: contrast(@overlay-background-color, darken(@color, 30%), lighten(@color, 30%));
+    color: @corrected-color;
+    background: fadeout(@corrected-color, 80%);
+  }
+}
diff --git a/packages/autocomplete-snippets/README.md b/packages/autocomplete-snippets/README.md
new file mode 100644
index 000000000..4e865e224
--- /dev/null
+++ b/packages/autocomplete-snippets/README.md
@@ -0,0 +1,7 @@
+# autocomplete+ snippet suggestions package
+
+Adds snippets to autocomplete+ suggestions
+
+## Features
+
+* Adds user snippets and language snippets to the autocomplete+ suggestions list
diff --git a/packages/autocomplete-snippets/lib/autocomplete-snippets.js b/packages/autocomplete-snippets/lib/autocomplete-snippets.js
new file mode 100644
index 000000000..ca5bc3fe0
--- /dev/null
+++ b/packages/autocomplete-snippets/lib/autocomplete-snippets.js
@@ -0,0 +1,26 @@
+module.exports = {
+  provider: null,
+
+  activate() {},
+
+  deactivate() {
+    this.provider = null
+  },
+
+  provide() {
+    if (this.provider == null) {
+      const SnippetsProvider = require('./snippets-provider')
+      this.provider = new SnippetsProvider()
+      if (this.snippets != null) {
+        this.provider.setSnippetsSource(this.snippets)
+      }
+    }
+
+    return this.provider
+  },
+
+  consumeSnippets(snippets) {
+    this.snippets = snippets
+    return (this.provider != null ? this.provider.setSnippetsSource(this.snippets) : undefined)
+  }
+}
diff --git a/packages/autocomplete-snippets/lib/snippets-provider.js b/packages/autocomplete-snippets/lib/snippets-provider.js
new file mode 100644
index 000000000..78dfd18ec
--- /dev/null
+++ b/packages/autocomplete-snippets/lib/snippets-provider.js
@@ -0,0 +1,61 @@
+module.exports =
+class SnippetsProvider {
+  constructor() {
+    this.selector = '*'
+    this.inclusionPriority = 1
+    this.suggestionPriority = 2
+    this.filterSuggestions = true
+
+    this.showIcon = true
+    this.snippetsSource = {
+      snippetsForScopes(scopeDescriptor) {
+        return atom.config.get('snippets', {scope: scopeDescriptor})
+      }
+    }
+  }
+
+  setSnippetsSource(snippetsSource) {
+    if (typeof (snippetsSource != null ? snippetsSource.snippetsForScopes : undefined) === "function") {
+      return this.snippetsSource = snippetsSource
+    }
+  }
+
+  getSuggestions({scopeDescriptor, prefix}) {
+    if (!(prefix != null ? prefix.length : undefined)) { return }
+    const scopeSnippets = this.snippetsSource.snippetsForScopes(scopeDescriptor)
+    return this.findSuggestionsForPrefix(scopeSnippets, prefix)
+  }
+
+  findSuggestionsForPrefix(snippets, prefix) {
+    if (snippets == null) { return [] }
+
+    const suggestions = []
+    for (let snippetPrefix in snippets) {
+      const snippet = snippets[snippetPrefix]
+      if (!snippet || !snippetPrefix || !prefix || !firstCharsEqual(snippetPrefix, prefix)) { continue }
+      suggestions.push({
+        iconHTML: this.showIcon ? undefined : false,
+        type: 'snippet',
+        text: snippet.prefix,
+        replacementPrefix: prefix,
+        rightLabel: snippet.name,
+        rightLabelHTML: snippet.rightLabelHTML,
+        leftLabel: snippet.leftLabel,
+        leftLabelHTML: snippet.leftLabelHTML,
+        description: snippet.description,
+        descriptionMoreURL: snippet.descriptionMoreURL
+      })
+    }
+
+    suggestions.sort(ascendingPrefixComparator)
+    return suggestions
+  }
+
+  onDidInsertSuggestion({editor}) {
+    return atom.commands.dispatch(atom.views.getView(editor), 'snippets:expand')
+  }
+}
+
+const ascendingPrefixComparator = (a, b) => a.text.localeCompare(b.text)
+
+const firstCharsEqual = (str1, str2) => str1[0].toLowerCase() === str2[0].toLowerCase()
diff --git a/packages/autocomplete-snippets/package-lock.json b/packages/autocomplete-snippets/package-lock.json
new file mode 100644
index 000000000..ec6532f50
--- /dev/null
+++ b/packages/autocomplete-snippets/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "autocomplete-snippets",
+  "version": "1.12.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "autocomplete-snippets",
+      "version": "1.12.1",
+      "license": "MIT",
+      "engines": {
+        "atom": ">=0.174.0 <2.0.0"
+      }
+    }
+  }
+}
diff --git a/packages/autocomplete-snippets/package.json b/packages/autocomplete-snippets/package.json
new file mode 100644
index 000000000..1a905ccb3
--- /dev/null
+++ b/packages/autocomplete-snippets/package.json
@@ -0,0 +1,25 @@
+{
+  "name": "autocomplete-snippets",
+  "main": "./lib/autocomplete-snippets",
+  "version": "1.12.1",
+  "description": "Adds snippets to autocomplete+ suggestions",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "engines": {
+    "atom": ">=0.174.0 <2.0.0"
+  },
+  "providedServices": {
+    "autocomplete.provider": {
+      "versions": {
+        "2.0.0": "provide"
+      }
+    }
+  },
+  "consumedServices": {
+    "snippets": {
+      "versions": {
+        "0.1.0": "consumeSnippets"
+      }
+    }
+  }
+}
diff --git a/packages/autocomplete-snippets/spec/autocomplete-snippets-spec.js b/packages/autocomplete-snippets/spec/autocomplete-snippets-spec.js
new file mode 100644
index 000000000..4cb8a9eba
--- /dev/null
+++ b/packages/autocomplete-snippets/spec/autocomplete-snippets-spec.js
@@ -0,0 +1,106 @@
+describe('AutocompleteSnippets', () => {
+  let [completionDelay, editor, editorView] = []
+
+  beforeEach(() => {
+    atom.config.set('autocomplete-plus.enableAutoActivation', true)
+    completionDelay = 100
+    atom.config.set('autocomplete-plus.autoActivationDelay', completionDelay)
+    completionDelay += 100 // Rendering delay
+
+    const workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+
+    let autocompleteSnippetsMainModule = null
+    let snippetsMainModule = null
+    const autocompleteManager = null
+
+    waitsForPromise(() =>
+      Promise.all([
+        atom.workspace.open('sample.js').then((e) => {
+          editor = e
+          editorView = atom.views.getView(editor)
+        }),
+
+        atom.packages.activatePackage('language-javascript'),
+        atom.packages.activatePackage('autocomplete-snippets').then(({mainModule}) => autocompleteSnippetsMainModule = mainModule),
+
+        atom.packages.activatePackage('autocomplete-plus'),
+        atom.packages.activatePackage('snippets').then(({mainModule}) => {
+          snippetsMainModule = mainModule
+          snippetsMainModule.loaded = false
+        })
+      ])
+    )
+
+    waitsFor('snippets provider to be registered', 1000, () => autocompleteSnippetsMainModule.provider != null)
+
+    waitsFor('all snippets to load', 3000, () => snippetsMainModule.loaded)
+  })
+
+  describe('when autocomplete-plus is enabled', () => {
+    it('shows autocompletions when there are snippets available', () => {
+      runs(() => {
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        editor.moveToBottom()
+        editor.insertText('D')
+        editor.insertText('o')
+
+        advanceClock(completionDelay)
+      })
+
+      waitsFor('autocomplete view to appear', 1000, () => editorView.querySelector('.autocomplete-plus span.word'))
+
+      runs(() => {
+        expect(editorView.querySelector('.autocomplete-plus span.word')).toHaveText('do')
+        expect(editorView.querySelector('.autocomplete-plus span.right-label')).toHaveText('do')
+      })
+    })
+
+    it("expands the snippet on confirm", () => {
+      runs(() => {
+        expect(editorView.querySelector('.autocomplete-plus')).not.toExist()
+
+        editor.moveToBottom()
+        editor.insertText('D')
+        editor.insertText('o')
+
+        advanceClock(completionDelay)
+      })
+
+      waitsFor('autocomplete view to appear', 1000, () => editorView.querySelector('.autocomplete-plus span.word'))
+
+      runs(() => {
+        atom.commands.dispatch(editorView, 'autocomplete-plus:confirm')
+        expect(editor.getText()).toContain('} while (true)')
+      })
+    })
+  })
+
+  describe('when showing suggestions', () =>
+    it('sorts them in alphabetical order', () => {
+      const unorderedPrefixes = [
+        "",
+        "dop",
+        "do",
+        "dad",
+        "d"
+      ]
+
+      const snippets = {}
+      for (let x of Array.from(unorderedPrefixes)) {
+        snippets[x] = {prefix: x, name: "", description: "", descriptionMoreURL: ""}
+      }
+
+      const SnippetsProvider = require('../lib/snippets-provider')
+      const sp = new SnippetsProvider()
+      sp.setSnippetsSource({snippetsForScopes(scope) {
+        return snippets
+      }})
+      const suggestions = sp.getSuggestions({scopeDescriptor: "", prefix: "d"})
+
+      const suggestionsText = suggestions.map(x => x.text)
+      expect(suggestionsText).toEqual(["d", "dad", "do", "dop"])
+    })
+  )
+})
diff --git a/packages/autocomplete-snippets/spec/fixtures/sample.js b/packages/autocomplete-snippets/spec/fixtures/sample.js
new file mode 100644
index 000000000..eaadaa4ff
--- /dev/null
+++ b/packages/autocomplete-snippets/spec/fixtures/sample.js
@@ -0,0 +1 @@
+console.log("ohai");
diff --git a/packages/autoflow/LICENSE.md b/packages/autoflow/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/autoflow/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/autoflow/package-lock.json b/packages/autoflow/package-lock.json
new file mode 100644
index 000000000..c46e75231
--- /dev/null
+++ b/packages/autoflow/package-lock.json
@@ -0,0 +1,32 @@
+{
+  "name": "autoflow",
+  "version": "0.29.4",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "autoflow",
+      "version": "0.29.4",
+      "license": "MIT",
+      "dependencies": {
+        "underscore-plus": "^1.7.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    }
+  }
+}
diff --git a/packages/background-tips/README.md b/packages/background-tips/README.md
new file mode 100644
index 000000000..5a3872aa7
--- /dev/null
+++ b/packages/background-tips/README.md
@@ -0,0 +1,5 @@
+## Background Tips package
+
+Displays tips about Pulsar in the background when there are no open editors.
+
+![Screen shot](https://f.cloud.github.com/assets/69169/1796267/c3de038c-6a60-11e3-8bf8-36f45684902c.png)
diff --git a/packages/background-tips/lib/background-tips-view.js b/packages/background-tips/lib/background-tips-view.js
new file mode 100644
index 000000000..d6efce494
--- /dev/null
+++ b/packages/background-tips/lib/background-tips-view.js
@@ -0,0 +1,156 @@
+const _ = require('underscore-plus')
+const {CompositeDisposable, Disposable} = require('atom')
+const Tips = require('./tips')
+
+const TEMPLATE = `\
+<ul class="centered background-message">
+  <li class="message"></li>
+</ul>\
+`
+
+module.exports =
+class BackgroundTipsElement {
+  constructor () {
+    this.element = document.createElement('background-tips')
+    this.index = -1
+    this.workspaceCenter = atom.workspace.getCenter()
+
+    this.startDelay = 1000
+    this.displayDuration = 10000
+    this.fadeDuration = 300
+
+    this.disposables = new CompositeDisposable()
+
+    const visibilityCallback = () => this.updateVisibility()
+
+    this.disposables.add(this.workspaceCenter.onDidAddPane(visibilityCallback))
+    this.disposables.add(this.workspaceCenter.onDidDestroyPane(visibilityCallback))
+    this.disposables.add(this.workspaceCenter.onDidChangeActivePaneItem(visibilityCallback))
+
+    atom.getCurrentWindow().on('blur', visibilityCallback)
+    atom.getCurrentWindow().on('focus', visibilityCallback)
+
+    this.disposables.add(new Disposable(() => atom.getCurrentWindow().removeListener('blur', visibilityCallback)))
+    this.disposables.add(new Disposable(() => atom.getCurrentWindow().removeListener('focus', visibilityCallback)))
+
+    this.startTimeout = setTimeout(() => this.start(), this.startDelay)
+  }
+
+  destroy () {
+    this.stop()
+    this.disposables.dispose()
+  }
+
+  attach () {
+    this.element.innerHTML = TEMPLATE
+    this.message = this.element.querySelector('.message')
+
+    const paneView = atom.views.getView(this.workspaceCenter.getActivePane())
+    const itemViews = paneView.querySelector('.item-views')
+    let top = 0
+    if (itemViews && itemViews.offsetTop) {
+      top = itemViews.offsetTop
+    }
+
+    this.element.style.top = top + 'px'
+    paneView.appendChild(this.element)
+  }
+
+  detach () {
+    this.element.remove()
+  }
+
+  updateVisibility () {
+    if (this.shouldBeAttached()) {
+      this.start()
+    } else {
+      this.stop()
+    }
+  }
+
+  shouldBeAttached () {
+    return this.workspaceCenter.getPanes().length === 1 &&
+    this.workspaceCenter.getActivePaneItem() == null &&
+    atom.getCurrentWindow().isFocused()
+  }
+
+  start () {
+    if (!this.shouldBeAttached() || this.interval != null) return
+    this.renderTips()
+    this.randomizeIndex()
+    this.attach()
+    this.showNextTip()
+    this.interval = setInterval(() => this.showNextTip(), this.displayDuration)
+  }
+
+  stop () {
+    this.element.remove()
+    if (this.interval != null) {
+      clearInterval(this.interval)
+    }
+
+    clearTimeout(this.startTimeout)
+    clearTimeout(this.nextTipTimeout)
+    this.interval = null
+  }
+
+  randomizeIndex () {
+    const len = Tips.length
+    this.index = Math.round(Math.random() * len) % len
+  }
+
+  showNextTip () {
+    this.index = ++this.index % Tips.length
+    this.message.classList.remove('fade-in')
+    this.nextTipTimeout = setTimeout(() => {
+      this.message.innerHTML = Tips[this.index]
+      this.message.classList.add('fade-in')
+    }, this.fadeDuration)
+  }
+
+  renderTips () {
+    if (this.tipsRendered) return
+    for (let i = 0; i < Tips.length; i++) {
+      const tip = Tips[i]
+      Tips[i] = this.renderTip(tip)
+    }
+    this.tipsRendered = true
+  }
+
+  renderTip (str) {
+    str = str.replace(/\{(.+)\}/g, (match, command) => {
+      let binding, scope
+      const scopeAndCommand = command.split('>')
+      if (scopeAndCommand.length > 1) {
+        [scope, command] = scopeAndCommand
+      }
+      const bindings = atom.keymaps.findKeyBindings({command: command.trim()})
+
+      if (scope) {
+        for (binding of bindings) {
+          if (binding.selector === scope) break
+        }
+      } else {
+        binding = this.getKeyBindingForCurrentPlatform(bindings)
+      }
+
+      if (binding && binding.keystrokes) {
+        const keystrokeLabel = _.humanizeKeystroke(binding.keystrokes).replace(/\s+/g, '&nbsp')
+        return `<span class="keystroke">${keystrokeLabel}</span>`
+      } else {
+        return command
+      }
+    })
+    return str
+  }
+
+  getKeyBindingForCurrentPlatform (bindings) {
+    if (!bindings || !bindings.length) return
+    for (let binding of bindings) {
+      if (binding.selector.indexOf(process.platform) !== -1) {
+        return binding
+      }
+    }
+    return bindings[0]
+  }
+}
diff --git a/packages/background-tips/lib/background-tips.js b/packages/background-tips/lib/background-tips.js
new file mode 100644
index 000000000..3c827be7e
--- /dev/null
+++ b/packages/background-tips/lib/background-tips.js
@@ -0,0 +1,11 @@
+const BackgroundTipsView = require('./background-tips-view')
+
+module.exports = {
+  activate () {
+    this.backgroundTipsView = new BackgroundTipsView()
+  },
+
+  deactivate () {
+    this.backgroundTipsView.destroy()
+  }
+}
diff --git a/packages/background-tips/lib/tips.js b/packages/background-tips/lib/tips.js
new file mode 100644
index 000000000..fa70dc48a
--- /dev/null
+++ b/packages/background-tips/lib/tips.js
@@ -0,0 +1,14 @@
+module.exports = [
+  'Close panels like find and replace with {body>core:cancel}',
+  `Everything ${atom.branding.name} can do is in the Command Palette. See it by using {command-palette:toggle}`,
+  'You can quickly open files with the Fuzzy Finder. Try it by using {fuzzy-finder:toggle-file-finder}',
+  'You can toggle the Tree View with {tree-view:toggle}',
+  'You can focus the Tree View with {tree-view:toggle-focus}',
+  'You can toggle the Git tab with {github:toggle-git-tab}',
+  'You can focus the Git tab with {github:toggle-git-tab-focus}',
+  'You can toggle the GitHub tab with {github:toggle-github-tab}',
+  'You can focus the GitHub tab with {github:toggle-github-tab-focus}',
+  'You can split a pane with {pane:split-right-and-copy-active-item}',
+  'You can jump to a method in the editor using {symbols-view:toggle-file-symbols}',
+  'You can install packages and themes from the Settings View {settings-view:open}'
+]
diff --git a/packages/background-tips/package-lock.json b/packages/background-tips/package-lock.json
new file mode 100644
index 000000000..79ef3c6d8
--- /dev/null
+++ b/packages/background-tips/package-lock.json
@@ -0,0 +1,47 @@
+{
+  "name": "background-tips",
+  "version": "0.28.1",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "background-tips",
+      "version": "0.28.1",
+      "license": "MIT",
+      "dependencies": {
+        "underscore-plus": "1.x"
+      },
+      "engines": {
+        "atom": ">0.42.0"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    }
+  },
+  "dependencies": {
+    "underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "requires": {
+        "underscore": "^1.9.1"
+      }
+    }
+  }
+}
diff --git a/packages/background-tips/package.json b/packages/background-tips/package.json
new file mode 100644
index 000000000..d3b7bb114
--- /dev/null
+++ b/packages/background-tips/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "background-tips",
+  "main": "./lib/background-tips",
+  "version": "0.28.1",
+  "private": true,
+  "description": "Displays tips about Pulsar in the background when there are no editors open.",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "engines": {
+    "atom": ">0.42.0"
+  },
+  "dependencies": {
+    "underscore-plus": "1.x"
+  }
+}
diff --git a/packages/background-tips/spec/async-spec-helpers.js b/packages/background-tips/spec/async-spec-helpers.js
new file mode 100644
index 000000000..73002c049
--- /dev/null
+++ b/packages/background-tips/spec/async-spec-helpers.js
@@ -0,0 +1,103 @@
+/** @babel */
+
+export function beforeEach (fn) {
+  global.beforeEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+export function afterEach (fn) {
+  global.afterEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+['it', 'fit', 'ffit', 'fffit'].forEach(function (name) {
+  module.exports[name] = function (description, fn) {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, function () {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise(() => result)
+      }
+    })
+  }
+})
+
+export async function conditionPromise (condition, description = 'anonymous condition') {
+  const startTime = Date.now()
+
+  while (true) {
+    await timeoutPromise(100)
+
+    if (await condition()) {
+      return
+    }
+
+    if (Date.now() - startTime > 5000) {
+      throw new Error('Timed out waiting on ' + description)
+    }
+  }
+}
+
+export function timeoutPromise (timeout) {
+  return new Promise(function (resolve) {
+    global.setTimeout(resolve, timeout)
+  })
+}
+
+function waitsForPromise (fn) {
+  const promise = fn()
+  global.waitsFor('spec promise to resolve', function (done) {
+    promise.then(done, function (error) {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
+
+export function emitterEventPromise (emitter, event, timeout = 15000) {
+  return new Promise((resolve, reject) => {
+    const timeoutHandle = setTimeout(() => {
+      reject(new Error(`Timed out waiting for '${event}' event`))
+    }, timeout)
+    emitter.once(event, () => {
+      clearTimeout(timeoutHandle)
+      resolve()
+    })
+  })
+}
+
+export function promisify (original) {
+  return function (...args) {
+    return new Promise((resolve, reject) => {
+      args.push((err, ...results) => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve(...results)
+        }
+      })
+
+      return original(...args)
+    })
+  }
+}
+
+export function promisifySome (obj, fnNames) {
+  const result = {}
+  for (const fnName of fnNames) {
+    result[fnName] = promisify(obj[fnName])
+  }
+  return result
+}
diff --git a/packages/background-tips/spec/background-tips-spec.js b/packages/background-tips/spec/background-tips-spec.js
new file mode 100644
index 000000000..86a3c78bf
--- /dev/null
+++ b/packages/background-tips/spec/background-tips-spec.js
@@ -0,0 +1,142 @@
+const {it, fit, ffit, afterEach, beforeEach, emitterEventPromise} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+describe('BackgroundTips', () => {
+  let workspaceElement
+
+  const activatePackage = async () => {
+    const {mainModule} = await atom.packages.activatePackage('background-tips')
+    return mainModule.backgroundTipsView
+  }
+
+  beforeEach(() => {
+    workspaceElement = atom.views.getView(atom.workspace)
+    jasmine.attachToDOM(workspaceElement)
+    jasmine.useMockClock()
+    spyOn(atom.getCurrentWindow(), 'isFocused').andReturn(true)
+  })
+
+  describe('when the package is activated when there is only one pane', () => {
+    beforeEach(() => {
+      expect(atom.workspace.getCenter().getPanes().length).toBe(1)
+    })
+
+    describe('when the pane is empty', () => {
+      it('attaches the view after a delay', async () => {
+        expect(atom.workspace.getActivePane().getItems().length).toBe(0)
+
+        const backgroundTipsView = await activatePackage()
+        expect(backgroundTipsView.element.parentNode).toBeFalsy()
+        advanceClock(backgroundTipsView.startDelay + 1)
+        expect(backgroundTipsView.element.parentNode).toBeTruthy()
+      })
+    })
+
+    describe('when the pane is not empty', () => {
+      it('does not attach the view', async () => {
+        await atom.workspace.open()
+
+        const backgroundTipsView = await activatePackage()
+        advanceClock(backgroundTipsView.startDelay + 1)
+        expect(backgroundTipsView.element.parentNode).toBeFalsy()
+      })
+    })
+
+    describe('when a second pane is created', () => {
+      it('detaches the view', async () => {
+        const backgroundTipsView = await activatePackage()
+        advanceClock(backgroundTipsView.startDelay + 1)
+        expect(backgroundTipsView.element.parentNode).toBeTruthy()
+
+        atom.workspace.getActivePane().splitRight()
+        expect(backgroundTipsView.element.parentNode).toBeFalsy()
+      })
+    })
+  })
+
+  describe('when the package is activated when there are multiple panes', () => {
+    beforeEach(() => {
+      atom.workspace.getActivePane().splitRight()
+      expect(atom.workspace.getCenter().getPanes().length).toBe(2)
+    })
+
+    it('does not attach the view', async () => {
+      const backgroundTipsView = await activatePackage()
+      advanceClock(backgroundTipsView.startDelay + 1)
+      expect(backgroundTipsView.element.parentNode).toBeFalsy()
+    })
+
+    describe('when all but the last pane is destroyed', () => {
+      it('attaches the view', async () => {
+        const backgroundTipsView = await activatePackage()
+        atom.workspace.getActivePane().destroy()
+        advanceClock(backgroundTipsView.startDelay + 1)
+        expect(backgroundTipsView.element.parentNode).toBeTruthy()
+
+        atom.workspace.getActivePane().splitRight()
+        expect(backgroundTipsView.element.parentNode).toBeFalsy()
+
+        atom.workspace.getActivePane().destroy()
+        expect(backgroundTipsView.element.parentNode).toBeTruthy()
+      })
+    })
+  })
+
+  describe('when the view is attached', () => {
+    let backgroundTipsView
+
+    beforeEach(async () => {
+      expect(atom.workspace.getCenter().getPanes().length).toBe(1)
+
+      backgroundTipsView = await activatePackage()
+      advanceClock(backgroundTipsView.startDelay)
+      advanceClock(backgroundTipsView.fadeDuration)
+    })
+
+    it('has text in the message', () => {
+      expect(backgroundTipsView.element.parentNode).toBeTruthy()
+      expect(backgroundTipsView.message.textContent).toBeTruthy()
+    })
+
+    it('changes text in the message', async () => {
+      const oldText = backgroundTipsView.message.textContent
+      advanceClock(backgroundTipsView.displayDuration)
+      advanceClock(backgroundTipsView.fadeDuration)
+      expect(backgroundTipsView.message.textContent).not.toEqual(oldText)
+    })
+  })
+
+  describe('when Atom is not focused but all other requirements are satisfied', () => {
+    beforeEach(() => {
+      jasmine.unspy(atom.getCurrentWindow(), 'isFocused')
+      spyOn(atom.getCurrentWindow(), 'isFocused').andReturn(false)
+    })
+
+    it('does not display the background tips', async () => {
+      expect(atom.workspace.getActivePane().getItems().length).toBe(0)
+
+      const backgroundTipsView = await activatePackage()
+      expect(backgroundTipsView.element.parentNode).toBeFalsy()
+      advanceClock(backgroundTipsView.startDelay + 1)
+      expect(backgroundTipsView.element.parentNode).toBeFalsy()
+    })
+
+    it('reactivates the background tips if the focus event is received', async () => {
+      expect(atom.workspace.getActivePane().getItems().length).toBe(0)
+
+      const backgroundTipsView = await activatePackage()
+      advanceClock(backgroundTipsView.startDelay + 1)
+      expect(backgroundTipsView.element.parentNode).toBeFalsy()
+
+      jasmine.unspy(atom.getCurrentWindow(), 'isFocused')
+      spyOn(atom.getCurrentWindow(), 'isFocused').andReturn(true)
+
+      const focusEvent = emitterEventPromise(atom.getCurrentWindow(), 'focus')
+      atom.getCurrentWindow().emit('focus') // Manually emit to prevent actually blurring + refocusing the window
+
+      await focusEvent
+
+      advanceClock(backgroundTipsView.startDelay + 1)
+      expect(backgroundTipsView.element.parentNode).toBeTruthy()
+    })
+  })
+})
diff --git a/packages/background-tips/styles/background-tips.less b/packages/background-tips/styles/background-tips.less
new file mode 100644
index 000000000..4586c0edb
--- /dev/null
+++ b/packages/background-tips/styles/background-tips.less
@@ -0,0 +1,37 @@
+// The ui-variables file is provided by base themes provided by Pulsar.
+//
+// See https://github.com/pulsar-edit/pulsar/blob/master/packages/atom-dark-ui/styles/ui-variables.less
+// for a full listing of what's available.
+@import "ui-variables";
+
+background-tips {
+  display: block;
+  pointer-events: none;
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  overflow: hidden;
+
+  .background-message {
+    user-select: none;
+    cursor: default;
+
+    .message {
+      padding: 0 @component-padding*3;
+      opacity: 0;
+      transition: opacity .3s ease-in-out;
+      &.fade-in {
+        opacity: 1;
+      }
+
+      .keystroke {
+        border: 2px solid;
+        padding: 0 @component-padding/2;
+        border-radius: @component-border-radius * 3;
+        font-family: "Helvetica Neue", Arial, sans-serif;
+      }
+    }
+  }
+}
diff --git a/packages/base16-tomorrow-dark-theme/LICENSE.md b/packages/base16-tomorrow-dark-theme/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/base16-tomorrow-dark-theme/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/base16-tomorrow-dark-theme/README.md b/packages/base16-tomorrow-dark-theme/README.md
index 19380bcad..d0ee34cbb 100644
--- a/packages/base16-tomorrow-dark-theme/README.md
+++ b/packages/base16-tomorrow-dark-theme/README.md
@@ -1,13 +1,13 @@
 # Base16 Tomorrow Dark Syntax theme
 
-Atom theme using the ever popular [Base16 Tomorrow](https://web.archive.org/web/20220806075017/https://chriskempson.com/projects/base16/) dark colors.
+Pulsar theme using the ever popular [Base16 Tomorrow](https://web.archive.org/web/20220806075017/https://chriskempson.com/projects/base16/) dark colors.
 
 ![Base16 Tomorrow light](https://cloud.githubusercontent.com/assets/378023/10118589/f108a568-64b6-11e5-8438-eb34dc9b40a1.png)
 
 
 ## Install
 
-This theme is installed by default with Atom and can be activated by going to the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the _Syntax Themes_ drop-down menu.
+This theme is installed by default with Pulsar and can be activated by going to the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the _Syntax Themes_ drop-down menu.
 
 A
 [light version](../base16-tomorrow-light-theme) of this theme is also available.
diff --git a/packages/base16-tomorrow-dark-theme/package-lock.json b/packages/base16-tomorrow-dark-theme/package-lock.json
new file mode 100644
index 000000000..8ca7df1f1
--- /dev/null
+++ b/packages/base16-tomorrow-dark-theme/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "base16-tomorrow-dark-theme",
+  "version": "1.6.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "base16-tomorrow-dark-theme",
+      "version": "1.6.0",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.49.0"
+      }
+    }
+  }
+}
diff --git a/packages/base16-tomorrow-dark-theme/styles/editor.less b/packages/base16-tomorrow-dark-theme/styles/editor.less
index 654fab3dd..aa10dd0b1 100644
--- a/packages/base16-tomorrow-dark-theme/styles/editor.less
+++ b/packages/base16-tomorrow-dark-theme/styles/editor.less
@@ -49,10 +49,6 @@ atom-text-editor {
     color: @syntax-cursor-color;
   }
 
-  .selection .region {
-    background-color: @syntax-selection-color;
-  }
-
   .bracket-matcher .region {
     border-color: @syntax-result-marker-color;
   }
diff --git a/packages/base16-tomorrow-light-theme/LICENSE.md b/packages/base16-tomorrow-light-theme/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/base16-tomorrow-light-theme/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/base16-tomorrow-light-theme/README.md b/packages/base16-tomorrow-light-theme/README.md
index 03b92a2e2..00734699d 100644
--- a/packages/base16-tomorrow-light-theme/README.md
+++ b/packages/base16-tomorrow-light-theme/README.md
@@ -1,13 +1,13 @@
 # Base16 Tomorrow Light Syntax theme
 
-Atom theme using the ever popular [Base16 Tomorrow](https://web.archive.org/web/20220806075017/https://chriskempson.com/projects/base16/) light colors.
+Pulsar theme using the ever popular [Base16 Tomorrow](https://web.archive.org/web/20220806075017/https://chriskempson.com/projects/base16/) light colors.
 
 ![Base16 Tomorrow light](https://cloud.githubusercontent.com/assets/378023/10118588/f1002474-64b6-11e5-9107-b6bedee9777a.png)
 
 
 ## Install
 
-This theme is installed by default with Atom and can be activated by going to the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the _Syntax Themes_ drop-down menu.
+This theme is installed by default with Pulsar and can be activated by going to the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the _Syntax Themes_ drop-down menu.
 
 A
 [dark version](../base16-tomorrow-dark-theme) of this theme is also available.
diff --git a/packages/base16-tomorrow-light-theme/package-lock.json b/packages/base16-tomorrow-light-theme/package-lock.json
new file mode 100644
index 000000000..961e389df
--- /dev/null
+++ b/packages/base16-tomorrow-light-theme/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "base16-tomorrow-light-theme",
+  "version": "1.6.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "base16-tomorrow-light-theme",
+      "version": "1.6.0",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.49.0"
+      }
+    }
+  }
+}
diff --git a/packages/base16-tomorrow-light-theme/styles/editor.less b/packages/base16-tomorrow-light-theme/styles/editor.less
index 654fab3dd..aa10dd0b1 100644
--- a/packages/base16-tomorrow-light-theme/styles/editor.less
+++ b/packages/base16-tomorrow-light-theme/styles/editor.less
@@ -49,10 +49,6 @@ atom-text-editor {
     color: @syntax-cursor-color;
   }
 
-  .selection .region {
-    background-color: @syntax-selection-color;
-  }
-
   .bracket-matcher .region {
     border-color: @syntax-result-marker-color;
   }
diff --git a/packages/bookmarks/README.md b/packages/bookmarks/README.md
new file mode 100644
index 000000000..2994827a5
--- /dev/null
+++ b/packages/bookmarks/README.md
@@ -0,0 +1,17 @@
+# Bookmarks package
+
+Bookmark lines in the editor.
+
+### Commands and Keybindings
+
+|Command|Description|Keybinding (Linux)|Keybinding (macOS)|Keybinding (Windows)|
+|-------|-----------|------------------|------------------|--------------------|
+|`bookmarks:toggle-bookmark`|Add/remove a bookmark on the current line|<kbd>ctrl-shift-f2</kbd>|<kbd>cmd-f2</kbd>|<kbd>alt-ctrl-f2</kbd>|
+|`bookmarks:clear-bookmarks`|Remove all bookmarks in the current editor|<kbd>alt-shift-f2</kbd>|<kbd>cmd-shift-f2</kbd>|<kbd>ctrl-shift-f2</kbd>|
+|`bookmarks:view-all`|View all the bookmarks|<kbd>ctrl-f2</kbd>|<kbd>ctrl-f2</kbd>|<kbd>ctrl-f2</kbd>|
+|`bookmarks:jump-to-next-bookmark`|Move the cursor to the next bookmark|<kbd>f2</kbd>|<kbd>f2</kbd>|<kbd>f2</kbd>|
+|`bookmarks:jump-to-previous-bookmark`|Move the cursor to the previous bookmark|<kbd>shift-f2</kbd>|<kbd>shift-f2</kbd>|<kbd>shift-f2</kbd>|
+|`bookmarks:select-to-next-bookmark`|Select the text to the next bookmark| | | |
+|`bookmarks:select-to-previous-bookmark`|Select the text to the previous bookmark| | | |
+
+![](https://cloud.githubusercontent.com/assets/1545996/10419203/97d75e32-7035-11e5-818f-5b34d60865c1.png)
diff --git a/packages/bookmarks/keymaps/bookmarks.cson b/packages/bookmarks/keymaps/bookmarks.cson
new file mode 100644
index 000000000..e8d508ced
--- /dev/null
+++ b/packages/bookmarks/keymaps/bookmarks.cson
@@ -0,0 +1,16 @@
+'atom-text-editor':
+  'ctrl-f2': 'bookmarks:view-all'
+  'f2': 'bookmarks:jump-to-next-bookmark'
+  'shift-f2': 'bookmarks:jump-to-previous-bookmark'
+
+'.platform-darwin atom-text-editor':
+  'cmd-f2': 'bookmarks:toggle-bookmark'
+  'cmd-shift-f2': 'bookmarks:clear-bookmarks'
+
+'.platform-win32 atom-text-editor':
+  'alt-ctrl-f2': 'bookmarks:toggle-bookmark'
+  'ctrl-shift-f2': 'bookmarks:clear-bookmarks'
+
+'.platform-linux atom-text-editor':
+  'ctrl-shift-f2': 'bookmarks:toggle-bookmark'
+  'alt-shift-f2': 'bookmarks:clear-bookmarks'
diff --git a/packages/bookmarks/lib/bookmarks-view.js b/packages/bookmarks/lib/bookmarks-view.js
new file mode 100644
index 000000000..5c1d41e8c
--- /dev/null
+++ b/packages/bookmarks/lib/bookmarks-view.js
@@ -0,0 +1,100 @@
+const path = require('path')
+
+const SelectListView = require('atom-select-list')
+
+module.exports =
+class BookmarksView {
+  constructor (editorsBookmarks) {
+    this.editorsBookmarks = editorsBookmarks
+    this.selectList = new SelectListView({
+      emptyMessage: 'No bookmarks found',
+      items: [],
+      filterKeyForItem: (bookmark) => bookmark.filterText,
+      didConfirmSelection: ({editor, marker}) => {
+        this.hide()
+        editor.setSelectedBufferRange(marker.getBufferRange(), {autoscroll: true})
+        atom.workspace.paneForItem(editor).activate()
+        atom.workspace.paneForItem(editor).activateItem(editor)
+      },
+      didCancelSelection: () => {
+        this.hide()
+      },
+      elementForItem: ({marker, editor}) => {
+        const bookmarkStartRow = marker.getStartBufferPosition().row
+        const bookmarkEndRow = marker.getEndBufferPosition().row
+        const bookmarkPath = editor.getPath() ? path.basename(editor.getPath()) : 'untitled'
+        let bookmarkLocation = `${bookmarkPath}:${bookmarkStartRow + 1}`
+        if (bookmarkStartRow !== bookmarkEndRow) {
+          bookmarkLocation += `-${bookmarkEndRow + 1}`
+        }
+
+        const lineText = editor.lineTextForBufferRow(bookmarkStartRow)
+        const li = document.createElement('li')
+        li.classList.add('bookmark')
+        const primaryLine = document.createElement('div')
+        primaryLine.classList.add('primary-line')
+        primaryLine.textContent = bookmarkLocation
+        li.appendChild(primaryLine)
+        if (lineText) {
+          const secondaryLine = document.createElement('div')
+          secondaryLine.classList.add('secondary-line', 'line-text')
+          secondaryLine.textContent = lineText.trim()
+          li.appendChild(secondaryLine)
+          li.classList.add('two-lines')
+        }
+        return li
+      }
+    })
+    this.selectList.element.classList.add('bookmarks-view')
+  }
+
+  destroy () {
+    this.selectList.destroy()
+    this.getModalPanel().destroy()
+    if (this.previouslyFocusedElement) {
+      this.previouslyFocusedElement.focus()
+      this.previouslyFocusedElement = null
+    }
+  }
+
+  async show () {
+    const bookmarks = []
+    for (const {editor, markerLayer} of this.editorsBookmarks) {
+      for (const marker of markerLayer.getMarkers()) {
+        let filterText = `${marker.getStartBufferPosition().row}`
+
+        if (editor.getPath()) {
+          filterText += ` ${editor.getPath()}`
+        }
+
+        const bookmarkedLineText = editor.lineTextForBufferRow(marker.getStartBufferPosition().row)
+        if (bookmarkedLineText) {
+          filterText += ` ${bookmarkedLineText.trim()}`
+        }
+
+        bookmarks.push({marker, editor, filterText})
+      }
+    }
+
+    this.previouslyFocusedElement = document.activeElement
+    this.selectList.reset()
+    await this.selectList.update({items: bookmarks})
+    this.getModalPanel().show()
+    this.selectList.focus()
+  }
+
+  hide () {
+    this.getModalPanel().hide()
+    if (this.previouslyFocusedElement) {
+      this.previouslyFocusedElement.focus()
+      this.previouslyFocusedElement = null
+    }
+  }
+
+  getModalPanel () {
+    if (!this.modalPanel) {
+      this.modalPanel = atom.workspace.addModalPanel({item: this.selectList})
+    }
+    return this.modalPanel
+  }
+}
diff --git a/packages/bookmarks/lib/bookmarks.js b/packages/bookmarks/lib/bookmarks.js
new file mode 100644
index 000000000..ffaf66257
--- /dev/null
+++ b/packages/bookmarks/lib/bookmarks.js
@@ -0,0 +1,120 @@
+const {CompositeDisposable} = require('atom')
+
+module.exports =
+class Bookmarks {
+  static deserialize (editor, state) {
+    return new Bookmarks(editor, editor.getMarkerLayer(state.markerLayerId))
+  }
+
+  constructor (editor, markerLayer) {
+    this.editor = editor
+    this.markerLayer = markerLayer || this.editor.addMarkerLayer({persistent: true})
+    this.decorationLayer = this.editor.decorateMarkerLayer(this.markerLayer, {type: 'line-number', class: 'bookmarked'})
+    this.disposables = new CompositeDisposable()
+    this.disposables.add(atom.commands.add(atom.views.getView(this.editor), {
+      'bookmarks:toggle-bookmark': this.toggleBookmark.bind(this),
+      'bookmarks:jump-to-next-bookmark': this.jumpToNextBookmark.bind(this),
+      'bookmarks:jump-to-previous-bookmark': this.jumpToPreviousBookmark.bind(this),
+      'bookmarks:select-to-next-bookmark': this.selectToNextBookmark.bind(this),
+      'bookmarks:select-to-previous-bookmark': this.selectToPreviousBookmark.bind(this),
+      'bookmarks:clear-bookmarks': this.clearBookmarks.bind(this)
+    }))
+    this.decorationLayerLine = this.editor.decorateMarkerLayer(this.markerLayer, {type: 'line', class: 'bookmarked'})
+    this.decorationLayerHighlight = this.editor.decorateMarkerLayer(this.markerLayer, {type: 'highlight', class: 'bookmarked'})
+    this.disposables.add(this.editor.onDidDestroy(this.destroy.bind(this)))
+  }
+
+  destroy () {
+    this.deactivate()
+    this.markerLayer.destroy()
+  }
+
+  deactivate () {
+    this.decorationLayer.destroy()
+    this.decorationLayerLine.destroy()
+    this.decorationLayerHighlight.destroy()
+    this.disposables.dispose()
+  }
+
+  serialize () {
+    return {markerLayerId: this.markerLayer.id}
+  }
+
+  toggleBookmark () {
+    for (const range of this.editor.getSelectedBufferRanges()) {
+      const bookmarks = this.markerLayer.findMarkers({intersectsRowRange: [range.start.row, range.end.row]})
+      if (bookmarks && bookmarks.length > 0) {
+        for (const bookmark of bookmarks) {
+          bookmark.destroy()
+        }
+      } else {
+        const bookmark = this.markerLayer.markBufferRange(range, {invalidate: 'surround', exclusive: true})
+        this.disposables.add(bookmark.onDidChange(({isValid}) => {
+          if (!isValid) {
+            bookmark.destroy()
+          }
+        }))
+      }
+    }
+  }
+
+  clearBookmarks () {
+    for (const bookmark of this.markerLayer.getMarkers()) {
+      bookmark.destroy()
+    }
+  }
+
+  jumpToNextBookmark () {
+    if (this.markerLayer.getMarkerCount() > 0) {
+      const bufferRow = this.editor.getLastCursor().getMarker().getStartBufferPosition().row
+      const markers = this.markerLayer.getMarkers().sort((a, b) => a.compare(b))
+      const bookmarkMarker = markers.find((marker) => marker.getBufferRange().start.row > bufferRow) || markers[0]
+      this.editor.setSelectedBufferRange(bookmarkMarker.getBufferRange(), {autoscroll: false})
+      this.editor.scrollToCursorPosition()
+    } else {
+      atom.beep()
+    }
+  }
+
+  jumpToPreviousBookmark () {
+    if (this.markerLayer.getMarkerCount() > 0) {
+      const bufferRow = this.editor.getLastCursor().getMarker().getStartBufferPosition().row
+      const markers = this.markerLayer.getMarkers().sort((a, b) => b.compare(a))
+      const bookmarkMarker = markers.find((marker) => marker.getBufferRange().start.row < bufferRow) || markers[0]
+      this.editor.setSelectedBufferRange(bookmarkMarker.getBufferRange(), {autoscroll: false})
+      this.editor.scrollToCursorPosition()
+    } else {
+      atom.beep()
+    }
+  }
+
+  selectToNextBookmark () {
+    if (this.markerLayer.getMarkerCount() > 0) {
+      const bufferRow = this.editor.getLastCursor().getMarker().getStartBufferPosition().row
+      const markers = this.markerLayer.getMarkers().sort((a, b) => a.compare(b))
+      const bookmarkMarker = markers.find((marker) => marker.getBufferRange().start.row > bufferRow) || markers[0]
+      if (!bookmarkMarker) {
+        atom.beep()
+      } else {
+        this.editor.setSelectedBufferRange([bookmarkMarker.getHeadBufferPosition(), this.editor.getCursorBufferPosition()], {autoscroll: false})
+      }
+    } else {
+      atom.beep()
+    }
+  }
+
+  selectToPreviousBookmark () {
+    if (this.markerLayer.getMarkerCount() > 0) {
+      const bufferRow = this.editor.getLastCursor().getMarker().getStartBufferPosition().row
+      const markers = this.markerLayer.getMarkers().sort((a, b) => b.compare(a))
+      const bookmarkMarker = markers.find((marker) => marker.getBufferRange().start.row < bufferRow) || markers[0]
+      if (!bookmarkMarker) {
+        atom.beep()
+      } else {
+        this.editor.setSelectedBufferRange([this.editor.getCursorBufferPosition(), bookmarkMarker.getHeadBufferPosition()], {autoscroll: false})
+      }
+    } else {
+      atom.beep()
+    }
+  }
+}
diff --git a/packages/bookmarks/lib/main.js b/packages/bookmarks/lib/main.js
new file mode 100644
index 000000000..272b8909c
--- /dev/null
+++ b/packages/bookmarks/lib/main.js
@@ -0,0 +1,66 @@
+const {CompositeDisposable} = require('atom')
+
+const Bookmarks = require('./bookmarks')
+const BookmarksView = require('./bookmarks-view')
+
+module.exports = {
+  activate (bookmarksByEditorId) {
+    this.bookmarksView = null
+    this.editorsBookmarks = []
+    this.disposables = new CompositeDisposable()
+    const watchedEditors = new WeakSet()
+
+    atom.commands.add('atom-workspace', 'bookmarks:view-all', async () => {
+      if (this.bookmarksView == null) {
+        this.bookmarksView = new BookmarksView(this.editorsBookmarks)
+      }
+      await this.bookmarksView.show()
+    })
+
+    atom.workspace.observeTextEditors(textEditor => {
+      if (watchedEditors.has(textEditor)) {
+        return
+      }
+
+      let bookmarks
+      let state = bookmarksByEditorId[textEditor.id]
+      if (state) {
+        bookmarks = Bookmarks.deserialize(textEditor, state)
+      } else {
+        bookmarks = new Bookmarks(textEditor)
+      }
+
+      this.editorsBookmarks.push(bookmarks)
+      watchedEditors.add(textEditor)
+      this.disposables.add(textEditor.onDidDestroy(() => {
+        const index = this.editorsBookmarks.indexOf(bookmarks)
+        if (index !== -1) {
+          this.editorsBookmarks.splice(index, 1)
+        }
+
+        bookmarks.destroy()
+        watchedEditors.delete(textEditor)
+      }))
+    })
+  },
+
+  deactivate () {
+    if (this.bookmarksView != null) {
+      this.bookmarksView.destroy()
+      this.bookmarksView = null
+    }
+
+    for (let bookmarks of this.editorsBookmarks) {
+      bookmarks.deactivate()
+    }
+    this.disposables.dispose()
+  },
+
+  serialize () {
+    const bookmarksByEditorId = {}
+    for (let bookmarks of this.editorsBookmarks) {
+      bookmarksByEditorId[bookmarks.editor.id] = bookmarks.serialize()
+    }
+    return bookmarksByEditorId
+  }
+}
diff --git a/packages/bookmarks/menus/bookmarks.cson b/packages/bookmarks/menus/bookmarks.cson
new file mode 100644
index 000000000..4121199f2
--- /dev/null
+++ b/packages/bookmarks/menus/bookmarks.cson
@@ -0,0 +1,23 @@
+'menu': [
+  {
+    'label': 'Edit'
+    'submenu': [
+      {
+        'label': 'Bookmark'
+        'submenu': [
+          { 'label': 'View All', 'command': 'bookmarks:view-all' }
+          { 'label': 'Toggle Bookmark', 'command': 'bookmarks:toggle-bookmark' }
+          { 'label': 'Jump to Next Bookmark', 'command': 'bookmarks:jump-to-next-bookmark' }
+          { 'label': 'Jump to Previous Bookmark', 'command': 'bookmarks:jump-to-previous-bookmark' }
+          { 'label': 'Select to Next Bookmark', 'command': 'bookmarks:select-to-next-bookmark' }
+          { 'label': 'Select to Previous Bookmark', 'command': 'bookmarks:select-to-previous-bookmark' }
+        ]
+      }
+    ]
+  }
+]
+'context-menu': {
+  'atom-text-editor': [
+    { 'label': 'Toggle bookmark', 'command': 'bookmarks:toggle-bookmark' }
+  ]
+}
diff --git a/packages/bookmarks/package-lock.json b/packages/bookmarks/package-lock.json
new file mode 100644
index 000000000..30f26a3da
--- /dev/null
+++ b/packages/bookmarks/package-lock.json
@@ -0,0 +1,59 @@
+{
+  "name": "bookmarks",
+  "version": "0.46.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "bookmarks",
+      "version": "0.46.0",
+      "license": "MIT",
+      "dependencies": {
+        "atom-select-list": "^0.7.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/atom-select-list": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/atom-select-list/-/atom-select-list-0.7.2.tgz",
+      "integrity": "sha512-a707OB1DhLGjzqtFrtMQKH7BBxFuCh8UBoUWxgFOrLrSwVh3g+/TlVPVDOz12+U0mDu3mIrnYLqQyhywQOTxhw==",
+      "dependencies": {
+        "etch": "^0.12.6",
+        "fuzzaldrin": "^2.1.0"
+      }
+    },
+    "node_modules/etch": {
+      "version": "0.12.8",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.12.8.tgz",
+      "integrity": "sha512-dFLRe4wLroVtwzyy1vGlE3BSDZHiL0kZME5XgNGzZIULcYTvVno8vbiIleAesoKJmwWaxDTzG+4eppg2zk14JQ=="
+    },
+    "node_modules/fuzzaldrin": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/fuzzaldrin/-/fuzzaldrin-2.1.0.tgz",
+      "integrity": "sha1-kCBMPi/appQbso0WZF1BgGOpDps="
+    }
+  },
+  "dependencies": {
+    "atom-select-list": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/atom-select-list/-/atom-select-list-0.7.2.tgz",
+      "integrity": "sha512-a707OB1DhLGjzqtFrtMQKH7BBxFuCh8UBoUWxgFOrLrSwVh3g+/TlVPVDOz12+U0mDu3mIrnYLqQyhywQOTxhw==",
+      "requires": {
+        "etch": "^0.12.6",
+        "fuzzaldrin": "^2.1.0"
+      }
+    },
+    "etch": {
+      "version": "0.12.8",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.12.8.tgz",
+      "integrity": "sha512-dFLRe4wLroVtwzyy1vGlE3BSDZHiL0kZME5XgNGzZIULcYTvVno8vbiIleAesoKJmwWaxDTzG+4eppg2zk14JQ=="
+    },
+    "fuzzaldrin": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/fuzzaldrin/-/fuzzaldrin-2.1.0.tgz",
+      "integrity": "sha1-kCBMPi/appQbso0WZF1BgGOpDps="
+    }
+  }
+}
diff --git a/packages/bookmarks/package.json b/packages/bookmarks/package.json
new file mode 100644
index 000000000..5228364ad
--- /dev/null
+++ b/packages/bookmarks/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "bookmarks",
+  "version": "0.46.0",
+  "main": "./lib/main",
+  "description": "Can mark lines, then jump back to them",
+  "license": "MIT",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "engines": {
+    "atom": "*"
+  },
+  "dependencies": {
+    "atom-select-list": "^0.7.0"
+  }
+}
diff --git a/packages/bookmarks/spec/bookmarks-view-spec.js b/packages/bookmarks/spec/bookmarks-view-spec.js
new file mode 100644
index 000000000..a1a0a5375
--- /dev/null
+++ b/packages/bookmarks/spec/bookmarks-view-spec.js
@@ -0,0 +1,529 @@
+describe('Bookmarks package', () => {
+  let [workspaceElement, editorElement, editor, bookmarks] = []
+
+  const bookmarkedRangesForEditor = editor => {
+    const decorationsById = editor.decorationsStateForScreenRowRange(0, editor.getLastScreenRow())
+    const decorations = Object.keys(decorationsById).map(key => decorationsById[key])
+    return decorations.filter(decoration => decoration.properties.class === 'bookmarked')
+                      .filter(decoration => decoration.properties.type === 'line-number')
+                      .map(decoration => decoration.screenRange)
+  }
+
+  const getBookmarkedLineNodes = editorElement => editorElement.querySelectorAll('.line-number.bookmarked')
+
+  beforeEach(async () => {
+    spyOn(window, 'setImmediate').andCallFake(fn => fn())
+    workspaceElement = atom.views.getView(atom.workspace)
+
+    await atom.workspace.open('sample.js')
+
+    bookmarks = (await atom.packages.activatePackage('bookmarks')).mainModule
+
+    jasmine.attachToDOM(workspaceElement)
+    editor = atom.workspace.getActiveTextEditor()
+    editorElement = atom.views.getView(editor)
+    spyOn(atom, 'beep')
+  })
+
+  describe('toggling bookmarks', () => {
+    describe('point marker bookmark', () => {
+      it('creates a marker when toggled', () => {
+        editor.setCursorBufferPosition([3, 10])
+        expect(bookmarkedRangesForEditor(editor)).toEqual([])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor)).toEqual([[[3, 10], [3, 10]]])
+      })
+
+      it('removes marker when toggled', () => {
+        editor.setCursorBufferPosition([3, 10])
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(1)
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+      })
+    })
+
+    describe('multiple point marker bookmark', () => {
+      it('creates multiple markers when toggled', () => {
+        editor.setCursorBufferPosition([3, 10])
+        editor.addCursorAtBufferPosition([6, 11])
+        expect(bookmarkedRangesForEditor(editor)).toEqual([])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor)).toEqual([[[3, 10], [3, 10]], [[6, 11], [6, 11]]])
+      })
+
+      it('removes multiple markers when toggled', () => {
+        editor.setCursorBufferPosition([3, 10])
+        editor.addCursorAtBufferPosition([6, 11])
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(2)
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+      })
+
+      it('adds and removes multiple markers at the same time', () => {
+        editor.setCursorBufferPosition([3, 10])
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor)).toEqual([[[3, 10], [3, 10]]])
+
+        editor.addCursorAtBufferPosition([6, 11])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor)).toEqual([[[6, 11], [6, 11]]])
+
+        editor.addCursorAtBufferPosition([8, 8])
+        editor.addCursorAtBufferPosition([11, 8])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor)).toEqual([[[3, 10], [3, 10]], [[8, 8], [8, 8]], [[11, 8], [11, 8]]])
+
+        // reset cursors, and try multiple cursors on same line but different ranges
+        editor.setCursorBufferPosition([8, 40])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor)).toEqual([[[3, 10], [3, 10]], [[11, 8], [11, 8]]])
+
+        editor.addCursorAtBufferPosition([3, 0])
+        editor.addCursorAtBufferPosition([11, 0])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor)).toEqual([[[8, 40], [8, 40]]])
+
+        editor.setCursorBufferPosition([8, 0])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+      })
+    })
+
+    describe('single line range marker bookmark', () => {
+      it('created a marker when toggled', () => {
+        editor.setSelectedBufferRanges([[[3, 5], [3, 10]]])
+        expect(bookmarkedRangesForEditor(editor)).toEqual([])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+
+        expect(bookmarkedRangesForEditor(editor)).toEqual([[[3, 5], [3, 10]]])
+      })
+
+      it('removes marker when toggled', () => {
+        editor.setSelectedBufferRanges([[[3, 5], [3, 10]]])
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(1)
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+      })
+    })
+
+    describe('multi line range marker bookmark', () => {
+      it('created a marker when toggled', () => {
+        editor.setSelectedBufferRanges([[[1, 5], [3, 10]]])
+        expect(bookmarkedRangesForEditor(editor)).toEqual([])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+
+        expect(bookmarkedRangesForEditor(editor)).toEqual([[[1, 5], [3, 10]]])
+      })
+
+      it('removes marker when toggled', () => {
+        editor.setSelectedBufferRanges([[[1, 5], [3, 10]]])
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(1)
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+      })
+
+      it('removes marker when toggled inside bookmark', () => {
+        editor.setSelectedBufferRanges([[[1, 5], [3, 10]]])
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(1)
+
+        editor.setCursorBufferPosition([2, 2])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+      })
+
+      it('removes marker when toggled outside bookmark on start row', () => {
+        editor.setSelectedBufferRanges([[[1, 5], [3, 10]]])
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(1)
+
+        editor.setCursorBufferPosition([1, 2])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+      })
+
+      it('removes marker when toggled outside bookmark on end row', () => {
+        editor.setSelectedBufferRanges([[[1, 5], [3, 8]]])
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(1)
+
+        editor.setCursorBufferPosition([3, 10])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+      })
+    })
+
+    it('toggles proper classes on proper gutter, line row and highlight on point bookmark', () => {
+      editor.setCursorBufferPosition([3, 10])
+      expect(getBookmarkedLineNodes(editorElement).length).toBe(0)
+
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      let lines = getBookmarkedLineNodes(editorElement)
+
+      expect(editorElement.querySelectorAll('.highlight.bookmarked').length).toBe(0)
+      expect(editorElement.querySelectorAll('.line.bookmarked').length).toBe(1)
+      expect(editorElement.querySelectorAll('.line-number.bookmarked').length).toBe(1)
+      expect(lines[0]).toHaveData('buffer-row', 3)
+
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+
+      expect(editorElement.querySelectorAll('.highlight.bookmarked').length).toBe(0)
+      expect(editorElement.querySelectorAll('.line.bookmarked').length).toBe(0)
+      expect(editorElement.querySelectorAll('.line-number.bookmarked').length).toBe(0)
+    })
+
+    it('toggles proper classes on proper gutter, line row and highlight on range bookmark', () => {
+      editor.setSelectedBufferRanges([[[3, 5], [3, 10]]])
+      expect(editorElement.querySelectorAll('.bookmarked').length).toBe(0)
+
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      let lines = getBookmarkedLineNodes(editorElement)
+
+      expect(editorElement.querySelectorAll('.highlight.bookmarked').length).toBe(1)
+      expect(editorElement.querySelectorAll('.line.bookmarked').length).toBe(1)
+      expect(editorElement.querySelectorAll('.line-number.bookmarked').length).toBe(1)
+      expect(lines[0]).toHaveData('buffer-row', 3)
+
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+
+      expect(editorElement.querySelectorAll('.highlight.bookmarked').length).toBe(0)
+      expect(editorElement.querySelectorAll('.line.bookmarked').length).toBe(0)
+      expect(editorElement.querySelectorAll('.line-number.bookmarked').length).toBe(0)
+    })
+
+    it('clears all bookmarks', () => {
+      editor.setCursorBufferPosition([3, 10])
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+
+      editor.setCursorBufferPosition([5, 0])
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+
+      atom.commands.dispatch(editorElement, 'bookmarks:clear-bookmarks')
+      expect(getBookmarkedLineNodes(editorElement).length).toBe(0)
+    })
+  })
+
+  describe('when a bookmark is invalidated', () => {
+    it('creates a marker when toggled', () => {
+      editor.setCursorBufferPosition([3, 10])
+      expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      expect(bookmarkedRangesForEditor(editor).length).toBe(1)
+
+      editor.setText('')
+      expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+    })
+  })
+
+  describe('jumping between bookmarks', () => {
+    it("doesn't die when no bookmarks", () => {
+      editor.setCursorBufferPosition([5, 10])
+
+      atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+      expect(editor.getLastCursor().getBufferPosition()).toEqual([5, 10])
+      expect(atom.beep.callCount).toBe(1)
+
+      atom.commands.dispatch(editorElement, 'bookmarks:jump-to-previous-bookmark')
+      expect(editor.getLastCursor().getBufferPosition()).toEqual([5, 10])
+      expect(atom.beep.callCount).toBe(2)
+    })
+
+    describe('with one bookmark', () => {
+      beforeEach(() => {
+        editor.setCursorBufferPosition([2, 0])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      })
+
+      it('jump-to-next-bookmark jumps to the right place', () => {
+        editor.setCursorBufferPosition([0, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+
+        editor.setCursorBufferPosition([5, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+      })
+
+      it('jump-to-previous-bookmark jumps to the right place', () => {
+        editor.setCursorBufferPosition([0, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-previous-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-previous-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+
+        editor.setCursorBufferPosition([5, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-previous-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+      })
+    })
+
+    describe('with bookmarks', () => {
+      beforeEach(() => {
+        editor.setCursorBufferPosition([2, 0])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+
+        editor.setSelectedBufferRanges([[[8, 4], [10, 0]]])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+
+        editor.setCursorBufferPosition([5, 0])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      })
+
+      it('jump-to-next-bookmark finds next bookmark', () => {
+        editor.setCursorBufferPosition([0, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([5, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+        expect(editor.getLastCursor().getMarker().getBufferRange()).toEqual([[8, 4], [10, 0]])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+
+        editor.setCursorBufferPosition([11, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+      })
+
+      it('jump-to-previous-bookmark finds previous bookmark', () => {
+        editor.setCursorBufferPosition([0, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-previous-bookmark')
+        expect(editor.getLastCursor().getMarker().getBufferRange()).toEqual([[8, 4], [10, 0]])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-previous-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([5, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-previous-bookmark')
+        expect(editor.getLastCursor().getBufferPosition()).toEqual([2, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-previous-bookmark')
+        expect(editor.getLastCursor().getMarker().getBufferRange()).toEqual([[8, 4], [10, 0]])
+
+        editor.setCursorBufferPosition([11, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:jump-to-previous-bookmark')
+        expect(editor.getLastCursor().getMarker().getBufferRange()).toEqual([[8, 4], [10, 0]])
+      })
+    })
+  })
+
+  describe('when inserting text next to the bookmark', () => {
+    beforeEach(() => {
+      editor.setSelectedBufferRanges([[[3, 10], [3, 25]]])
+      expect(bookmarkedRangesForEditor(editor).length).toBe(0)
+
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      expect(bookmarkedRangesForEditor(editor).length).toBe(1)
+    })
+
+    it('moves the bookmarked range forward when typing in the start', () => {
+      editor.setCursorBufferPosition([3, 10])
+      editor.insertText('Hello')
+      editor.setCursorBufferPosition([0, 0])
+
+      atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+      expect(editor.getLastCursor().getMarker().getBufferRange()).toEqual([[3, 15], [3, 30]])
+    })
+
+    it('doesnt extend the bookmarked range when typing in the end', () => {
+      editor.setCursorBufferPosition([3, 25])
+      editor.insertText('Hello')
+      editor.setCursorBufferPosition([0, 0])
+
+      atom.commands.dispatch(editorElement, 'bookmarks:jump-to-next-bookmark')
+      expect(editor.getLastCursor().getMarker().getBufferRange()).toEqual([[3, 10], [3, 25]])
+    })
+  })
+
+  describe('browsing bookmarks', () => {
+    it('displays a select list of all bookmarks', async () => {
+      editor.setCursorBufferPosition([0])
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      editor.setCursorBufferPosition([2])
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      editor.setCursorBufferPosition([4])
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+
+      await atom.commands.dispatch(workspaceElement, 'bookmarks:view-all')
+
+      bookmarks = workspaceElement.querySelectorAll('.bookmark')
+      expect(bookmarks.length).toBe(3)
+      expect(bookmarks[0].querySelector('.primary-line').textContent).toBe('sample.js:1')
+      expect(bookmarks[0].querySelector('.secondary-line').textContent).toBe('var quicksort = function () {')
+      expect(bookmarks[1].querySelector('.primary-line').textContent).toBe('sample.js:3')
+      expect(bookmarks[1].querySelector('.secondary-line').textContent).toBe('if (items.length <= 1) return items;')
+      expect(bookmarks[2].querySelector('.primary-line').textContent).toBe('sample.js:5')
+      expect(bookmarks[2].querySelector('.secondary-line').textContent).toBe('while(items.length > 0) {')
+    })
+
+    describe('when a bookmark is selected', () => {
+      let editor2
+
+      beforeEach(async () => {
+        editor2 = await atom.workspace.open('sample.coffee')
+      })
+
+      it('sets the cursor to the location of the bookmark and activates the right editor', async () => {
+        editor.setCursorBufferPosition([8])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        editor.setCursorBufferPosition([0])
+
+        atom.workspace.paneForItem(editor2).activateItem(editor2)
+        await atom.commands.dispatch(workspaceElement, 'bookmarks:view-all')
+
+        const bookmarkElement = workspaceElement.querySelector('.bookmarks-view .bookmark')
+
+        await atom.commands.dispatch(bookmarkElement, 'core:confirm')
+
+        expect(atom.workspace.getActiveTextEditor()).toEqual(editor)
+        expect(editor.getCursorBufferPosition()).toEqual([8, 0])
+      })
+
+      it('searches for the bookmark among all panes and editors', async () => {
+        editor.setCursorBufferPosition([8])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+        editor.setCursorBufferPosition([0])
+
+        atom.workspace.paneForItem(editor2).activateItem(editor2)
+        const pane1 = atom.workspace.getActivePane()
+        pane1.splitRight()
+        expect(atom.workspace.getActivePane()).not.toEqual(pane1)
+
+        await atom.commands.dispatch(workspaceElement, 'bookmarks:view-all')
+
+        const bookmarkElement = workspaceElement.querySelector('.bookmarks-view .bookmark')
+
+        await atom.commands.dispatch(bookmarkElement, 'core:confirm')
+
+        expect(atom.workspace.getActiveTextEditor()).toEqual(editor)
+        expect(editor.getCursorBufferPosition()).toEqual([8, 0])
+      })
+    })
+  })
+
+  describe('serializing/deserializing bookmarks', () => {
+    let [editor2, editorElement2] = []
+
+    beforeEach(async () => {
+      editor2 = await atom.workspace.open('sample.coffee')
+      editorElement2 = atom.views.getView(editor2)
+    })
+
+    it('restores bookmarks on all the previously open editors', () => {
+      editor.setCursorScreenPosition([1, 2])
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      editor2.setCursorScreenPosition([4, 5])
+      atom.commands.dispatch(editorElement2, 'bookmarks:toggle-bookmark')
+
+      expect(bookmarkedRangesForEditor(editor)).toEqual([[[1, 2], [1, 2]]])
+      expect(bookmarkedRangesForEditor(editor2)).toEqual([[[4, 5], [4, 5]]])
+
+      const state = bookmarks.serialize()
+      bookmarks.deactivate()
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      atom.commands.dispatch(editorElement2, 'bookmarks:toggle-bookmark')
+
+      // toggling the bookmark has no effect when the package is deactivated.
+      expect(bookmarkedRangesForEditor(editor)).toEqual([])
+      expect(bookmarkedRangesForEditor(editor2)).toEqual([])
+
+      bookmarks.activate(state)
+
+      expect(bookmarkedRangesForEditor(editor)).toEqual([[[1, 2], [1, 2]]])
+      expect(bookmarkedRangesForEditor(editor2)).toEqual([[[4, 5], [4, 5]]])
+
+      atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      atom.commands.dispatch(editorElement2, 'bookmarks:toggle-bookmark')
+
+      expect(bookmarkedRangesForEditor(editor)).toEqual([])
+      expect(bookmarkedRangesForEditor(editor2)).toEqual([])
+    })
+  })
+
+  describe('selecting bookmarks', () => {
+    it('doesnt die when no bookmarks', () => {
+      editor.setCursorBufferPosition([5, 10])
+
+      atom.commands.dispatch(editorElement, 'bookmarks:select-to-next-bookmark')
+      expect(editor.getLastCursor().getBufferPosition()).toEqual([5, 10])
+      expect(atom.beep.callCount).toBe(1)
+
+      atom.commands.dispatch(editorElement, 'bookmarks:select-to-previous-bookmark')
+      expect(editor.getLastCursor().getBufferPosition()).toEqual([5, 10])
+      expect(atom.beep.callCount).toBe(2)
+    })
+
+    describe('with one bookmark', () => {
+      beforeEach(() => {
+        editor.setCursorBufferPosition([2, 0])
+        atom.commands.dispatch(editorElement, 'bookmarks:toggle-bookmark')
+      })
+
+      it('select-to-next-bookmark selects to the right place', () => {
+        editor.setCursorBufferPosition([0, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:select-to-next-bookmark')
+        expect(editor.getSelectedBufferRange()).toEqual([[0, 0], [2, 0]])
+      })
+
+      it('select-to-next-bookmark selects to the only bookmark', () => {
+        editor.setCursorBufferPosition([4, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:select-to-next-bookmark')
+        expect(editor.getSelectedBufferRange()).toEqual([[4, 0], [2, 0]])
+      })
+
+      it('select-to-previous-bookmark selects to the right place', () => {
+        editor.setCursorBufferPosition([4, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:select-to-previous-bookmark')
+        expect(editor.getSelectedBufferRange()).toEqual([[4, 0], [2, 0]])
+      })
+
+      it('select-to-previous-bookmark selects to the only bookmark', () => {
+        editor.setCursorBufferPosition([0, 0])
+
+        atom.commands.dispatch(editorElement, 'bookmarks:select-to-previous-bookmark')
+        expect(editor.getSelectedBufferRange()).toEqual([[0, 0], [2, 0]])
+      })
+    })
+  })
+})
diff --git a/packages/bookmarks/spec/fixtures/sample.coffee b/packages/bookmarks/spec/fixtures/sample.coffee
new file mode 100644
index 000000000..b8367ca59
--- /dev/null
+++ b/packages/bookmarks/spec/fixtures/sample.coffee
@@ -0,0 +1,23 @@
+class quicksort
+  sort: (items) ->
+    return items if items.length <= 1
+
+    pivot = items.shift()
+    left = []
+    right = []
+
+    # Comment in the middle
+
+    while items.length > 0
+      current = items.shift()
+      if current < pivot
+        left.push(current)
+      else
+        right.push(current);
+
+    sort(left).concat(pivot).concat(sort(right))
+
+  noop: ->
+    # just a noop
+
+exports.modules = quicksort
diff --git a/packages/bookmarks/spec/fixtures/sample.js b/packages/bookmarks/spec/fixtures/sample.js
new file mode 100644
index 000000000..566ae67db
--- /dev/null
+++ b/packages/bookmarks/spec/fixtures/sample.js
@@ -0,0 +1,13 @@
+var quicksort = function () {
+  var sort = function(items) {
+    if (items.length <= 1) return items;
+    var pivot = items.shift(), current, left = [], right = [];
+    while(items.length > 0) {
+      current = items.shift();
+      current < pivot ? left.push(current) : right.push(current);
+    }
+    return sort(left).concat(pivot).concat(sort(right));
+  };
+
+  return sort(Array.apply(this, arguments));
+};
diff --git a/packages/bookmarks/styles/bookmarks.less b/packages/bookmarks/styles/bookmarks.less
new file mode 100644
index 000000000..7fd97bcbf
--- /dev/null
+++ b/packages/bookmarks/styles/bookmarks.less
@@ -0,0 +1,20 @@
+@import "octicon-utf-codes.less";
+
+atom-text-editor {
+  .gutter .line-number.bookmarked .icon-right {
+    visibility: visible;
+
+    &:before {
+      content: @bookmark;
+      color: #09C;
+    }
+  }
+}
+
+.bookmarks-view {
+  .bookmark {
+    .line-text {
+      font-family: monospace;
+    }
+  }
+}
diff --git a/packages/command-palette/README.md b/packages/command-palette/README.md
new file mode 100644
index 000000000..16ea25af4
--- /dev/null
+++ b/packages/command-palette/README.md
@@ -0,0 +1,5 @@
+# Command Palette package
+
+Find and run available commands using <kbd>cmd-shift-p</kbd> (macOS) or <kbd>ctrl-shift-p</kbd> (Linux/Windows) in Pulsar.
+
+![](https://f.cloud.github.com/assets/671378/2241354/2908b768-9ccd-11e3-9da1-a11753c0495d.png)
diff --git a/packages/command-palette/keymaps/command-palette.cson b/packages/command-palette/keymaps/command-palette.cson
new file mode 100644
index 000000000..2eee2541f
--- /dev/null
+++ b/packages/command-palette/keymaps/command-palette.cson
@@ -0,0 +1,8 @@
+'.platform-darwin, .platform-darwin .command-palette atom-text-editor':
+  'cmd-shift-p': 'command-palette:toggle'
+
+'.platform-win32, .platform-win32 .command-palette atom-text-editor':
+  'ctrl-shift-p': 'command-palette:toggle'
+
+'.platform-linux, .platform-linux .command-palette atom-text-editor':
+  'ctrl-shift-p': 'command-palette:toggle'
diff --git a/packages/command-palette/lib/command-palette-package.js b/packages/command-palette/lib/command-palette-package.js
new file mode 100644
index 000000000..3d81c296f
--- /dev/null
+++ b/packages/command-palette/lib/command-palette-package.js
@@ -0,0 +1,34 @@
+/** @babel */
+
+import {CompositeDisposable} from 'atom'
+import CommandPaletteView from './command-palette-view'
+
+class CommandPalettePackage {
+  activate () {
+    this.commandPaletteView = new CommandPaletteView()
+    this.disposables = new CompositeDisposable()
+    this.disposables.add(atom.commands.add('atom-workspace', {
+      'command-palette:toggle': () => {
+        this.commandPaletteView.toggle()
+      },
+      'command-palette:show-hidden-commands': () => {
+        this.commandPaletteView.show(true)
+      }
+    }))
+    this.disposables.add(atom.config.observe('command-palette.useAlternateScoring', (newValue) => {
+      this.commandPaletteView.update({useAlternateScoring: newValue})
+    }))
+    this.disposables.add(atom.config.observe('command-palette.preserveLastSearch', (newValue) => {
+      this.commandPaletteView.update({preserveLastSearch: newValue})
+    }))
+    return this.commandPaletteView.show()
+  }
+
+  async deactivate () {
+    this.disposables.dispose()
+    await this.commandPaletteView.destroy()
+  }
+}
+
+const pack = new CommandPalettePackage()
+export default pack
diff --git a/packages/command-palette/lib/command-palette-view.js b/packages/command-palette/lib/command-palette-view.js
new file mode 100644
index 000000000..403c4a457
--- /dev/null
+++ b/packages/command-palette/lib/command-palette-view.js
@@ -0,0 +1,257 @@
+/** @babel */
+
+import SelectListView from 'atom-select-list'
+import {humanizeKeystroke} from 'underscore-plus'
+import fuzzaldrin from 'fuzzaldrin'
+import fuzzaldrinPlus from 'fuzzaldrin-plus'
+
+export default class CommandPaletteView {
+  constructor (initiallyVisibleItemCount = 10) {
+    this.keyBindingsForActiveElement = []
+    this.selectListView = new SelectListView({
+      initiallyVisibleItemCount: initiallyVisibleItemCount, // just for being able to disable visible-on-render in spec
+      items: [],
+      filter: this.filter,
+      emptyMessage: 'No matches found',
+      elementForItem: (item, {index, selected, visible}) => {
+        if (!visible) {
+          return document.createElement("li")
+        }
+
+        const li = document.createElement('li')
+        li.classList.add('event', 'two-lines')
+        li.dataset.eventName = item.name
+
+        const rightBlock = document.createElement('div')
+        rightBlock.classList.add('pull-right')
+
+        this.keyBindingsForActiveElement
+        .filter(({command}) => command === item.name)
+        .forEach(keyBinding => {
+          const kbd = document.createElement('kbd')
+          kbd.classList.add('key-binding')
+          kbd.textContent = humanizeKeystroke(keyBinding.keystrokes)
+          rightBlock.appendChild(kbd)
+        })
+        li.appendChild(rightBlock)
+
+        const leftBlock = document.createElement('div')
+        const titleEl = document.createElement('div')
+        titleEl.classList.add('primary-line')
+        titleEl.title = item.name
+        leftBlock.appendChild(titleEl)
+
+        const query = this.selectListView.getQuery()
+        this.highlightMatchesInElement(item.displayName, query, titleEl)
+
+        if (selected) {
+          let secondaryEl = document.createElement('div')
+          secondaryEl.classList.add('secondary-line')
+          secondaryEl.style.display = 'flex'
+
+          if (typeof item.description === 'string') {
+            secondaryEl.appendChild(this.createDescription(item.description, query))
+          }
+
+          if (Array.isArray(item.tags)) {
+            const matchingTags = item.tags
+              .map(t => [t, this.fuzz.score(t, query)])
+              .filter(([t, s]) => s > 0)
+              .sort((a, b) => a.s - b.s)
+              .map(([t, s]) => t)
+
+            if (matchingTags.length > 0) {
+              secondaryEl.appendChild(this.createTags(matchingTags, query))
+            }
+          }
+
+          leftBlock.appendChild(secondaryEl)
+        }
+
+        li.appendChild(leftBlock)
+        return li
+      },
+      didConfirmSelection: (keyBinding) => {
+        this.hide()
+        const event = new CustomEvent(keyBinding.name, {bubbles: true, cancelable: true})
+        this.activeElement.dispatchEvent(event)
+      },
+      didCancelSelection: () => {
+        this.hide()
+      }
+    })
+    this.selectListView.element.classList.add('command-palette')
+  }
+
+  async destroy () {
+    await this.selectListView.destroy()
+  }
+
+  toggle () {
+    if (this.panel && this.panel.isVisible()) {
+      this.hide()
+      return Promise.resolve()
+    } else {
+      return this.show()
+    }
+  }
+
+  async show (showHiddenCommands = false) {
+    if (!this.panel) {
+      this.panel = atom.workspace.addModalPanel({item: this.selectListView})
+    }
+
+    if (!this.preserveLastSearch) {
+      this.selectListView.reset()
+    } else {
+      this.selectListView.refs.queryEditor.selectAll()
+    }
+
+    this.activeElement = (document.activeElement === document.body) ? atom.views.getView(atom.workspace) : document.activeElement
+    this.keyBindingsForActiveElement = atom.keymaps.findKeyBindings({target: this.activeElement})
+    const commandsForActiveElement = atom.commands
+        .findCommands({target: this.activeElement})
+        .filter(command => showHiddenCommands === !!command.hiddenInCommandPalette)
+    commandsForActiveElement.sort((a, b) => a.displayName.localeCompare(b.displayName))
+    await this.selectListView.update({items: commandsForActiveElement})
+
+    this.previouslyFocusedElement = document.activeElement
+    this.panel.show()
+    this.selectListView.focus()
+  }
+
+  hide () {
+    this.panel.hide()
+    if (this.previouslyFocusedElement) {
+      this.previouslyFocusedElement.focus()
+      this.previouslyFocusedElement = null
+    }
+  }
+
+  async update (props) {
+    if (props.hasOwnProperty('preserveLastSearch')) {
+      this.preserveLastSearch = props.preserveLastSearch
+    }
+
+    if (props.hasOwnProperty('useAlternateScoring')) {
+      this.useAlternateScoring = props.useAlternateScoring
+    }
+  }
+
+  get fuzz () {
+    return this.useAlternateScoring ? fuzzaldrinPlus : fuzzaldrin
+  }
+
+  highlightMatchesInElement (text, query, el) {
+    const matches = this.fuzz.match(text, query)
+    let matchedChars = []
+    let lastIndex = 0
+    for (const matchIndex of matches) {
+      const unmatched = text.substring(lastIndex, matchIndex)
+      if (unmatched) {
+        if (matchedChars.length > 0) {
+          const matchSpan = document.createElement('span')
+          matchSpan.classList.add('character-match')
+          matchSpan.textContent = matchedChars.join('')
+          el.appendChild(matchSpan)
+          matchedChars = []
+        }
+
+        el.appendChild(document.createTextNode(unmatched))
+      }
+
+      matchedChars.push(text[matchIndex])
+      lastIndex = matchIndex + 1
+    }
+
+    if (matchedChars.length > 0) {
+      const matchSpan = document.createElement('span')
+      matchSpan.classList.add('character-match')
+      matchSpan.textContent = matchedChars.join('')
+      el.appendChild(matchSpan)
+    }
+
+    const unmatched = text.substring(lastIndex)
+    if (unmatched) {
+      el.appendChild(document.createTextNode(unmatched))
+    }
+  }
+
+  filter = (items, query) => {
+    if (query.length === 0) {
+      return items
+    }
+
+    const scoredItems = []
+    for (const item of items) {
+      let score = this.fuzz.score(item.displayName, query)
+      if (item.tags) {
+        score += item.tags.reduce(
+          (currentScore, tag) => currentScore + this.fuzz.score(tag, query),
+          0
+        )
+      }
+      if (item.description) {
+        score += this.fuzz.score(item.description, query)
+      }
+
+      if (score > 0) {
+        scoredItems.push({item, score})
+      }
+    }
+    scoredItems.sort((a, b) => b.score - a.score)
+    return scoredItems.map((i) => i.item)
+  }
+
+  createDescription (description, query) {
+    const descriptionEl = document.createElement('div')
+
+    // in case of overflow, give full contents on long hover
+    descriptionEl.title = description
+
+    Object.assign(descriptionEl.style, {
+      flexGrow: 1,
+      flexShrink: 1,
+      textOverflow: 'ellipsis',
+      whiteSpace: 'nowrap',
+      overflow: 'hidden'
+    })
+    this.highlightMatchesInElement(description, query, descriptionEl)
+    return descriptionEl
+  }
+
+  createTag (tagText, query) {
+    const tagEl = document.createElement('li')
+    Object.assign(tagEl.style, {
+      borderBottom: 0,
+      display: 'inline',
+      padding: 0
+    })
+    this.highlightMatchesInElement(tagText, query, tagEl)
+    return tagEl
+  }
+
+  createTags (matchingTags, query) {
+    const tagsEl = document.createElement('ol')
+    Object.assign(tagsEl.style, {
+      display: 'inline',
+      marginLeft: '4px',
+      flexShrink: 0,
+      padding: 0
+    })
+
+    const introEl = document.createElement('strong')
+    introEl.textContent = 'matching tags: '
+
+    tagsEl.appendChild(introEl)
+    matchingTags.map(t => this.createTag(t, query)).forEach((tagEl, i) => {
+      tagsEl.appendChild(tagEl)
+      if (i < matchingTags.length - 1) {
+        const commaSpace = document.createElement('span')
+        commaSpace.textContent = ', '
+        tagsEl.appendChild(commaSpace)
+      }
+    })
+    return tagsEl
+  }
+}
diff --git a/packages/command-palette/menus/command-palette.cson b/packages/command-palette/menus/command-palette.cson
new file mode 100644
index 000000000..8df08e422
--- /dev/null
+++ b/packages/command-palette/menus/command-palette.cson
@@ -0,0 +1,25 @@
+'menu': [
+  {
+    'label': 'View'
+    'submenu': [
+      {
+        'label': 'Toggle Command Palette'
+        'command': 'command-palette:toggle'
+      }
+    ]
+  }
+  {
+    'label': 'Packages'
+    'submenu': [
+      {
+        'label': 'Command Palette',
+        'submenu': [
+          {
+            'label': 'Toggle'
+            'command': 'command-palette:toggle'
+          }
+        ]
+      }
+    ]
+  }
+]
diff --git a/packages/command-palette/package-lock.json b/packages/command-palette/package-lock.json
new file mode 100644
index 000000000..9fcb33804
--- /dev/null
+++ b/packages/command-palette/package-lock.json
@@ -0,0 +1,1765 @@
+{
+  "name": "command-palette",
+  "version": "0.43.5",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "command-palette",
+      "version": "0.43.5",
+      "license": "MIT",
+      "dependencies": {
+        "atom-select-list": "^0.7.1",
+        "fuzzaldrin": "^2.1.0",
+        "fuzzaldrin-plus": "^0.6.0",
+        "underscore-plus": "^1.0.0"
+      },
+      "devDependencies": {
+        "atom-mocha-test-runner": "^0.3.0",
+        "event-kit": "^2.4.0",
+        "semver": "^5.4.1",
+        "sinon": "^3.2.1"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/@colors/colors": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/@colors/colors/-/colors-1.5.0.tgz",
+      "integrity": "sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.1.90"
+      }
+    },
+    "node_modules/@dabh/diagnostics": {
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+      "dev": true,
+      "dependencies": {
+        "colorspace": "1.1.x",
+        "enabled": "2.0.x",
+        "kuler": "^2.0.0"
+      }
+    },
+    "node_modules/@sinonjs/commons": {
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+      }
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+      "optional": true,
+      "dependencies": {
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+        "json-stable-stringify": "^1.0.1"
+      }
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+        "grim": "^2.0.1",
+        "less": "^2.7.1",
+        "mocha": "^2.4.5",
+        "tmp": "0.0.28"
+      }
+    },
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+      "dev": true,
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+}
diff --git a/packages/command-palette/package.json b/packages/command-palette/package.json
new file mode 100644
index 000000000..7714ff0e1
--- /dev/null
+++ b/packages/command-palette/package.json
@@ -0,0 +1,41 @@
+{
+  "name": "command-palette",
+  "version": "0.43.5",
+  "main": "./lib/command-palette-package",
+  "description": "Find and run available commands using `cmd-shift-p` (macOS) or `ctrl-shift-p` (Linux/Windows).",
+  "activationCommands": {
+    "atom-workspace": [
+      "command-palette:toggle"
+    ]
+  },
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "engines": {
+    "atom": "*"
+  },
+  "atomTestRunner": "atom-mocha-test-runner",
+  "dependencies": {
+    "atom-select-list": "^0.7.1",
+    "fuzzaldrin": "^2.1.0",
+    "fuzzaldrin-plus": "^0.6.0",
+    "underscore-plus": "^1.0.0"
+  },
+  "devDependencies": {
+    "atom-mocha-test-runner": "^0.3.0",
+    "event-kit": "^2.4.0",
+    "semver": "^5.4.1",
+    "sinon": "^3.2.1"
+  },
+  "configSchema": {
+    "useAlternateScoring": {
+      "type": "boolean",
+      "default": true,
+      "description": "Use an alternative scoring approach which prefers run of consecutive characters, acronyms and start of words."
+    },
+    "preserveLastSearch": {
+      "type": "boolean",
+      "default": false,
+      "description": "Preserve the last search when reopening the command palette."
+    }
+  }
+}
diff --git a/packages/command-palette/styles/command-palette.less b/packages/command-palette/styles/command-palette.less
new file mode 100644
index 000000000..0663e53c8
--- /dev/null
+++ b/packages/command-palette/styles/command-palette.less
@@ -0,0 +1,7 @@
+@import "ui-variables";
+
+// Highlight matched text
+.command-palette .list-group .character-match {
+  color: @text-color-highlight;
+  font-weight: bold;
+}
diff --git a/packages/command-palette/test/command-palette-view.test.js b/packages/command-palette/test/command-palette-view.test.js
new file mode 100644
index 000000000..93e324769
--- /dev/null
+++ b/packages/command-palette/test/command-palette-view.test.js
@@ -0,0 +1,288 @@
+/** @babel */
+
+import _ from 'underscore-plus'
+import assert from 'assert'
+import semver from 'semver'
+import sinon from 'sinon'
+import CommandPaletteView from '../lib/command-palette-view'
+import {CompositeDisposable} from 'event-kit'
+
+describe('CommandPaletteView', () => {
+  let sandbox
+  let workspaceElement
+
+  beforeEach(() => {
+    workspaceElement = atom.views.getView(atom.workspace)
+    document.body.appendChild(workspaceElement)
+    document.body.focus()
+    sandbox = sinon.sandbox.create()
+  })
+
+  afterEach(() => {
+    sandbox.restore()
+    workspaceElement.remove()
+  })
+
+  describe('toggle', () => {
+    describe('when an element is focused', () => {
+      it('shows a list of all valid command descriptions, names, and keybindings for the previously focused element', async () => {
+        const editor = await atom.workspace.open()
+        editor.element.focus()
+
+        // To assert pure item rendering logic, disable render-on-visible behavior by passing Infinity to constructor.
+        const commandPalette = new CommandPaletteView(Infinity)
+        await commandPalette.toggle()
+
+        const keyBindings = atom.keymaps.findKeyBindings({target: editor.element})
+        for (const item of atom.commands.findCommands({target: editor.element})) {
+          const {name, description, displayName, tags} = item
+          const eventLi = workspaceElement.querySelector(`[data-event-name='${name}']`)
+          const displayNameLine = eventLi.querySelector('.primary-line')
+          assert.equal(displayNameLine.textContent, displayName)
+          assert.equal(displayNameLine.title, name)
+
+          if (description) {
+            // just in case it's not the first, need to select the item in order
+            // for its description to show
+            await commandPalette.selectListView.selectItem(item)
+
+            const descriptionEl = eventLi.querySelector('.secondary-line div')
+            assert(descriptionEl)
+            assert.equal(descriptionEl.textContent, description)
+            assert.equal(descriptionEl.title, description)
+          }
+
+          for (const binding of keyBindings) {
+            if (binding.command === name) {
+              assert(eventLi.textContent.includes(_.humanizeKeystroke(binding.keystrokes)))
+            }
+          }
+        }
+      })
+    })
+
+    describe('when no element has focus', () => {
+      it('uses the root view as the element to display and dispatch events to', async () => {
+        const findCommandsSpy = sandbox.spy(atom.commands, 'findCommands')
+        const findKeyBindingsSpy = sandbox.spy(atom.keymaps, 'findKeyBindings')
+
+        document.activeElement.blur()
+        const commandPalette = new CommandPaletteView()
+        await commandPalette.toggle()
+
+        assert(findCommandsSpy.calledWith({target: workspaceElement}))
+        assert(findKeyBindingsSpy.calledWith({target: workspaceElement}))
+      })
+    })
+
+    describe('when document.body has focus', () => {
+      it('uses the root view as the element to display and dispatch events to', async () => {
+        const findCommandsSpy = sandbox.spy(atom.commands, 'findCommands')
+        const findKeyBindingsSpy = sandbox.spy(atom.keymaps, 'findKeyBindings')
+
+        document.body.focus()
+        const commandPalette = new CommandPaletteView()
+        await commandPalette.toggle()
+
+        assert(findCommandsSpy.calledWith({target: workspaceElement}))
+        assert(findKeyBindingsSpy.calledWith({target: workspaceElement}))
+      })
+    })
+
+    it('focuses the mini-editor and selects the first command', async () => {
+      const commandPalette = new CommandPaletteView()
+      await commandPalette.toggle()
+      assert(commandPalette.selectListView.element.contains(document.activeElement))
+      assert(commandPalette.selectListView.element.querySelectorAll('.event')[0].classList.contains('selected'))
+    })
+
+    it('clears the previous mini editor text when `preserveLastSearch` is off', async () => {
+      const commandPalette = new CommandPaletteView()
+      await commandPalette.update({preserveLastSearch: false})
+      await commandPalette.toggle()
+      commandPalette.selectListView.refs.queryEditor.setText('abc')
+      await commandPalette.toggle()
+      assert.equal(commandPalette.selectListView.refs.queryEditor.getText(), 'abc')
+      await commandPalette.toggle()
+      assert.equal(commandPalette.selectListView.refs.queryEditor.getText(), '')
+    })
+
+    it('preserves the previous mini editor text when `preserveLastSearch` is on', async () => {
+      const commandPalette = new CommandPaletteView()
+      await commandPalette.update({preserveLastSearch: true})
+      await commandPalette.toggle()
+      commandPalette.selectListView.refs.queryEditor.setText('abc')
+      await commandPalette.toggle()
+      assert.equal(commandPalette.selectListView.refs.queryEditor.getText(), 'abc')
+      await commandPalette.toggle()
+      assert.equal(commandPalette.selectListView.refs.queryEditor.getText(), 'abc')
+    })
+
+    it('hides the command palette and focuses the previously active element if the palette was already open', async () => {
+      const editor = await atom.workspace.open()
+      const commandPalette = new CommandPaletteView()
+      assert.equal(document.activeElement.closest('atom-text-editor'), editor.element)
+      assert.equal(commandPalette.selectListView.element.offsetHeight, 0)
+      await commandPalette.toggle()
+      assert.notEqual(document.activeElement.closest('atom-text-editor'), editor.element)
+      assert.notEqual(commandPalette.selectListView.element.offsetHeight, 0)
+      await commandPalette.toggle()
+      assert.equal(commandPalette.selectListView.element.offsetHeight, 0)
+      assert.equal(document.activeElement.closest('atom-text-editor'), editor.element)
+      await commandPalette.toggle()
+      assert.notEqual(document.activeElement.closest('atom-text-editor'), editor.element)
+      assert.notEqual(commandPalette.selectListView.element.offsetHeight, 0)
+      commandPalette.selectListView.cancelSelection()
+      assert.equal(document.activeElement.closest('atom-text-editor'), editor.element)
+      assert.equal(commandPalette.selectListView.element.offsetHeight, 0)
+    })
+  })
+
+  describe('hidden commands', () => {
+    it('does not show commands that are marked as `hiddenInCommandPalette` by default, then *only* shows those commands when showHiddenCommands is invoked', async () => {
+      const commandsDisposable = atom.commands.add('*', 'foo:hidden-in-command-palette', {
+        hiddenInCommandPalette: true,
+        didDispatch () {}
+      })
+
+      const commandPalette = new CommandPaletteView()
+      await commandPalette.toggle()
+
+      assert(!commandPalette.selectListView.props.items.find(item => item.name === 'foo:hidden-in-command-palette'))
+
+      await commandPalette.show(true)
+      assert.equal(commandPalette.selectListView.props.items.length, 1)
+      assert.equal(commandPalette.selectListView.props.items[0].name, 'foo:hidden-in-command-palette')
+    })
+  })
+
+  describe('when selecting a command', () => {
+    it('hides the palette, then focuses the previously focused element and dispatches the selected command on it', async () => {
+      const editor = await atom.workspace.open()
+      editor.element.focus()
+      const commandPalette = new CommandPaletteView()
+      await commandPalette.toggle()
+      await commandPalette.selectListView.selectNext()
+      await commandPalette.selectListView.selectNext()
+      await commandPalette.selectListView.selectNext()
+      let hasDispatchedCommand = false
+      atom.commands.add(
+        editor.element,
+        commandPalette.selectListView.getSelectedItem().name,
+        () => { hasDispatchedCommand = true }
+      )
+      commandPalette.selectListView.confirmSelection()
+      assert(hasDispatchedCommand)
+      assert.equal(document.activeElement.closest('atom-text-editor'), editor.element)
+      assert.equal(commandPalette.selectListView.element.offsetHeight, 0)
+    })
+  })
+
+  describe('match highlighting', () => {
+    it('highlights exact matches', async () => {
+      const commandPalette = new CommandPaletteView()
+      await commandPalette.toggle()
+      commandPalette.selectListView.refs.queryEditor.setText('Application: About')
+      await commandPalette.selectListView.update()
+      const matches = commandPalette.selectListView.element.querySelectorAll('.character-match')
+      assert.equal(matches.length, 1)
+      assert.equal(matches[0].textContent, 'Application: About')
+    })
+
+    it('highlights partial matches in the displayName', async () => {
+      const commandPalette = new CommandPaletteView()
+      await commandPalette.toggle()
+      commandPalette.selectListView.refs.queryEditor.setText('Application')
+      await commandPalette.selectListView.update()
+      const matches = commandPalette.selectListView.element.querySelectorAll('.character-match')
+      assert(matches.length > 1)
+      for (const match of matches) {
+        assert.equal(match.textContent, 'Application')
+      }
+    })
+
+    it('highlights multiple matches in the command name', async () => {
+      const commandPalette = new CommandPaletteView()
+      await commandPalette.toggle()
+      commandPalette.selectListView.refs.queryEditor.setText('ApplicationAbout')
+      await commandPalette.selectListView.update()
+      const matches = commandPalette.selectListView.element.querySelectorAll('.character-match')
+      assert.equal(matches.length, 2)
+      assert.equal(matches[0].textContent, 'Application')
+      assert.equal(matches[1].textContent, 'About')
+    })
+
+    describe('in atom >= 1.21, where object command listeners are supported', () => {
+      if (semver.lt(atom.getVersion(), '1.21.0')) {
+        // only function listeners are supported, so the `add` method below will fail
+        return
+      }
+
+      let disposable
+      beforeEach(() => {
+        disposable = new CompositeDisposable()
+      })
+
+      afterEach(() => {
+        disposable.dispose()
+      })
+
+      it('highlights partial matches in the description', async () => {
+        disposable.add(atom.commands.add('*', 'foo:with-description', {
+          displayName: 'A Custom Display Name',
+          description: 'Awesome description here',
+          didDispatch () {}
+        }))
+
+        const commandPalette = new CommandPaletteView()
+        await commandPalette.toggle()
+        commandPalette.selectListView.refs.queryEditor.setText('Awesome')
+        await commandPalette.selectListView.update()
+        const {element} = commandPalette.selectListView
+
+        const withDescriptionLi = element.querySelector(`[data-event-name='foo:with-description']`)
+        const matches = withDescriptionLi.querySelectorAll('.character-match')
+        assert(matches.length > 0)
+        assert.equal(matches[0].textContent, 'Awesome')
+      })
+
+      it('highlights partial matches in the tags', async () => {
+        disposable.add(atom.commands.add('*', 'foo:with-tags', {
+          displayName: 'A Custom Display Name',
+          tags: ['bar', 'baz'],
+          didDispatch () {}
+        }))
+
+        const commandPalette = new CommandPaletteView()
+        await commandPalette.toggle()
+        commandPalette.selectListView.refs.queryEditor.setText('bar')
+        await commandPalette.selectListView.update()
+        const {element} = commandPalette.selectListView
+
+        const withTagsLi = element.querySelector(`[data-event-name='foo:with-tags']`)
+        const matches = withTagsLi.querySelectorAll('.character-match')
+        assert(matches.length > 0)
+        assert.equal(matches[0].textContent, 'bar')
+      })
+    })
+  })
+
+  describe('return placeholder element for invisible item for better performance', () => {
+    it('return placeholder element for first 10 items on initial toggle', async () => {
+      const commandPalette = new CommandPaletteView()
+      const spy = sinon.spy(commandPalette.selectListView.props, 'elementForItem')
+      await commandPalette.toggle()
+
+      const initiallyVisibleItemCount = 10
+      assert.equal(spy.args.length, commandPalette.selectListView.items.length)
+      spy.args.forEach((arg, index) => {
+        const innerText = spy.returnValues[index].innerText
+        if (index < initiallyVisibleItemCount) {
+          assert.notEqual(innerText, "")
+        } else {
+          assert.equal(innerText, "")
+        }
+      })
+    })
+  })
+})
diff --git a/packages/dalek/LICENSE.md b/packages/dalek/LICENSE.md
deleted file mode 100644
index 60afff4ac..000000000
--- a/packages/dalek/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2016 GitHub, Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/dalek/README.md b/packages/dalek/README.md
index e6bef6509..7405573d0 100644
--- a/packages/dalek/README.md
+++ b/packages/dalek/README.md
@@ -1,19 +1,19 @@
 # dalek
 
-**EXTERMINATEs** core packages installed in `~/.atom/packages`.
+**EXTERMINATEs** core packages installed in `~/.pulsar/packages`.
 
 ## Why worry?
 
-When people install core Atom packages as if they are community packages, it can cause many problems that are very hard to diagnose. This package is intended to notify people when they are in this precarious position so they can take corrective action.
+When people install core Pulsar packages as if they are community packages, it can cause many problems that are very hard to diagnose. This package is intended to notify people when they are in this precarious position so they can take corrective action.
 
 ## I got a warning, what do I do?
 
 1. Note down the packages named in the notification
-1. Exit Atom
-1. Open a command prompt
-1. For each package named in the notification, execute `apm uninstall [package-name]`
-1. Start Atom again normally to verify that the warning notification no longer appears
+2. Exit Pulsar
+3. Open a command prompt
+4. For each package named in the notification, execute `pulsar -p uninstall [package-name]`
+5. Start Pulsar again normally to verify that the warning notification no longer appears
 
 ## I have more questions. Where can I ask them?
 
-Please feel free to ask on [the official Atom message board](https://github.com/atom/atom/discussions).
+Please feel free to ask in any of our [Community Areas](https://pulsar-edit.dev/community.html).
diff --git a/packages/dalek/package-lock.json b/packages/dalek/package-lock.json
index fb5e31bee..3f29cae0f 100644
--- a/packages/dalek/package-lock.json
+++ b/packages/dalek/package-lock.json
@@ -1,157 +1,120 @@
 {
   "name": "dalek",
   "version": "0.2.2",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "@sinonjs/commons": {
+  "packages": {
+    "": {
+      "name": "dalek",
+      "version": "0.2.2",
+      "license": "MIT",
+      "dependencies": {
+        "grim": "^2.0.1"
+      },
+      "devDependencies": {
+        "atom-mocha-test-runner": "^1.0.0",
+        "sinon": "9.0.3"
+      },
+      "engines": {
+        "atom": ">=1.12.7 <2.0.0"
+      }
+    },
+    "node_modules/@sinonjs/commons": {
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.8.1.tgz",
       "integrity": "sha512-892K+kWUUi3cl+LlqEWIDrhvLgdL79tECi8JZUyq6IviKy/DNhuzCRlbHUjxK89f4ypPMMaFnFuR9Ie6DoIMsw==",
       "dev": true,
-      "requires": {
+      "dependencies": {
         "type-detect": "4.0.8"
       }
     },
-    "@sinonjs/fake-timers": {
+    "node_modules/@sinonjs/fake-timers": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-6.0.1.tgz",
       "integrity": "sha512-MZPUxrmFubI36XS1DI3qmI0YdN1gks62JtFZvxR67ljjSNCeK6U08Zx4msEWOXuofgqUt6zPHSi1H9fbjR/NRA==",
       "dev": true,
-      "requires": {
+      "dependencies": {
         "@sinonjs/commons": "^1.7.0"
       }
     },
-    "@sinonjs/formatio": {
+    "node_modules/@sinonjs/formatio": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-5.0.1.tgz",
       "integrity": "sha512-KaiQ5pBf1MpS09MuA0kp6KBQt2JUOQycqVG1NZXvzeaXe5LGFqAKueIS0bw4w0P9r7KuBSVdUk5QjXsUdu2CxQ==",
       "dev": true,
-      "requires": {
+      "dependencies": {
         "@sinonjs/commons": "^1",
         "@sinonjs/samsam": "^5.0.2"
       }
     },
-    "@sinonjs/samsam": {
+    "node_modules/@sinonjs/samsam": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-5.1.0.tgz",
       "integrity": "sha512-42nyaQOVunX5Pm6GRJobmzbS7iLI+fhERITnETXzzwDZh+TtDr/Au3yAvXVjFmZ4wEUaE4Y3NFZfKv0bV0cbtg==",
       "dev": true,
-      "requires": {
+      "dependencies": {
         "@sinonjs/commons": "^1.6.0",
         "lodash.get": "^4.4.2",
         "type-detect": "^4.0.8"
       }
     },
-    "@sinonjs/text-encoding": {
+    "node_modules/@sinonjs/text-encoding": {
       "version": "0.7.1",
       "resolved": "https://registry.npmjs.org/@sinonjs/text-encoding/-/text-encoding-0.7.1.tgz",
       "integrity": "sha512-+iTbntw2IZPb/anVDbypzfQa+ay64MW0Zo8aJ8gZPWMMK6/OubMVb6lUPMagqjOPnmtauXnFCACVl3O7ogjeqQ==",
       "dev": true
     },
-    "acorn": {
-      "version": "5.7.3",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
-      "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
-      "dev": true
-    },
-    "acorn-jsx": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
-      "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
-      "dev": true,
-      "requires": {
-        "acorn": "^3.0.4"
-      },
-      "dependencies": {
-        "acorn": {
-          "version": "3.3.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
-          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
-          "dev": true
-        }
-      }
-    },
-    "ajv": {
+    "node_modules/ajv": {
       "version": "4.11.8",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
       "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
       "dev": true,
-      "requires": {
+      "optional": true,
+      "dependencies": {
         "co": "^4.6.0",
         "json-stable-stringify": "^1.0.1"
       }
     },
-    "ajv-keywords": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-1.5.1.tgz",
-      "integrity": "sha1-MU3QpLM2j609/NxU7eYXG4htrzw=",
-      "dev": true
-    },
-    "ansi-escapes": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-1.4.0.tgz",
-      "integrity": "sha1-06ioOzGapneTZisT52HHkRQiMG4=",
-      "dev": true
-    },
-    "ansi-regex": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-      "dev": true
-    },
-    "ansi-styles": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
-      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
-      "dev": true
-    },
-    "argparse": {
-      "version": "1.0.10",
-      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
-      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
-      "dev": true,
-      "requires": {
-        "sprintf-js": "~1.0.2"
-      }
-    },
-    "asap": {
+    "node_modules/asap": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/asap/-/asap-2.0.6.tgz",
       "integrity": "sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY=",
       "dev": true,
       "optional": true
     },
-    "asn1": {
+    "node_modules/asn1": {
       "version": "0.2.4",
       "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
       "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
       "dev": true,
       "optional": true,
-      "requires": {
+      "dependencies": {
         "safer-buffer": "~2.1.0"
       }
     },
-    "assert-plus": {
+    "node_modules/assert-plus": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.2.0.tgz",
       "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ=",
       "dev": true,
-      "optional": true
+      "optional": true,
+      "engines": {
+        "node": ">=0.8"
+      }
     },
-    "asynckit": {
+    "node_modules/asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
       "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
       "dev": true,
       "optional": true
     },
-    "atom-mocha-test-runner": {
+    "node_modules/atom-mocha-test-runner": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/atom-mocha-test-runner/-/atom-mocha-test-runner-1.2.0.tgz",
       "integrity": "sha512-HVbx7cAvySjVfVNKpb2go9RO890Xs6yigWWAwoISOz4l2X5oMTMs1rIw04geuEQeTTmW3ob3nj6YN1KWf2cBHg==",
       "dev": true,
-      "requires": {
+      "dependencies": {
         "etch": "^0.8.0",
         "grim": "^2.0.1",
         "less": "^2.7.1",
@@ -159,1132 +122,637 @@
         "tmp": "0.0.31"
       }
     },
-    "aws-sign2": {
+    "node_modules/aws-sign2": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.6.0.tgz",
       "integrity": "sha1-FDQt0428yU0OW4fXY81jYSwOeU8=",
       "dev": true,
-      "optional": true
+      "optional": true,
+      "engines": {
+        "node": "*"
+      }
     },
-    "aws4": {
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+      "dev": true,
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 }
diff --git a/packages/deprecation-cop/LICENSE.md b/packages/deprecation-cop/LICENSE.md
deleted file mode 100644
index 58684e683..000000000
--- a/packages/deprecation-cop/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2011-2018 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/deprecation-cop/package-lock.json b/packages/deprecation-cop/package-lock.json
new file mode 100644
index 000000000..7c9db211d
--- /dev/null
+++ b/packages/deprecation-cop/package-lock.json
@@ -0,0 +1,200 @@
+{
+  "name": "deprecation-cop",
+  "version": "0.56.9",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "deprecation-cop",
+      "version": "0.56.9",
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+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
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+    },
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+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
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+      "resolved": "https://registry.npmjs.org/event-kit/-/event-kit-2.5.3.tgz",
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+    },
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+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
+      "integrity": "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q==",
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+        "minimatch": "^3.1.1",
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+        "node": "*"
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+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
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+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
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+    "node_modules/inherits": {
+      "version": "2.0.4",
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+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
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+    },
+    "node_modules/minimatch": {
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+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/minimist": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.7.tgz",
+      "integrity": "sha512-bzfL1YUZsP41gmu/qjrEk0Q6i2ix/cVeAhbCbqH9u3zYutS1cLg00qhrD0M2MVdCcx4Sc0UpP2eBWo9rotpq6g==",
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/mkdirp": {
+      "version": "0.5.6",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
+      "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
+      "dependencies": {
+        "minimist": "^1.2.6"
+      },
+      "bin": {
+        "mkdirp": "bin/cmd.js"
+      }
+    },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w==",
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha512-AVbw3UJ2e9bq64vSaS9Am0fje1Pa8pbGqTTsmXfaIiMpnr5DlDhfJOuLj9Sf95ZPVDAUerDfEk88MPmPe7UCQg==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/rimraf": {
+      "version": "2.7.1",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+      "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
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+        "glob": "^7.1.3"
+      },
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="
+    }
+  }
+}
diff --git a/packages/dev-live-reload/LICENSE.md b/packages/dev-live-reload/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/dev-live-reload/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/dev-live-reload/README.md b/packages/dev-live-reload/README.md
index 11ef2214a..137f90dee 100644
--- a/packages/dev-live-reload/README.md
+++ b/packages/dev-live-reload/README.md
@@ -1,8 +1,8 @@
 # Dev Live Reload package
 
-This live reloads the Atom `.less` files. You edit styles and they are magically reflected in any running Atom windows. Magic! :tophat: :sparkles: :rabbit2:
+This live reloads the Pulsar `.less` files. You edit styles and they are magically reflected in any running Pulsar windows. Magic! :tophat: :sparkles: :rabbit2:
 
-Installed by default on Atom windows running in dev mode. Use the "Application: Open Dev" command to open a new dev mode window.
+Installed by default on Pulsar windows running in dev mode. Use the "Application: Open Dev" command to open a new dev mode window.
 
 Use <kbd>meta-shift-ctrl-r</kbd> to reload all core and package stylesheets.
 
diff --git a/packages/dev-live-reload/package-lock.json b/packages/dev-live-reload/package-lock.json
new file mode 100644
index 000000000..0c82012e7
--- /dev/null
+++ b/packages/dev-live-reload/package-lock.json
@@ -0,0 +1,167 @@
+{
+  "name": "dev-live-reload",
+  "version": "0.48.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "dev-live-reload",
+      "version": "0.48.1",
+      "license": "MIT",
+      "dependencies": {
+        "fs-plus": "^3.0.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/async": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha512-nSVgobk4rv61R9PUSDtYt7mPVB2olxNR5RWJcAsH676/ef11bUZwvu7+RGYrYauVdDPcO519v68wRhXQtxsV9w=="
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw=="
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="
+    },
+    "node_modules/fs-plus": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/fs-plus/-/fs-plus-3.1.1.tgz",
+      "integrity": "sha512-Se2PJdOWXqos1qVTkvqqjb0CSnfBnwwD+pq+z4ksT+e97mEShod/hrNg0TRCCsXPbJzcIq+NuzQhigunMWMJUA==",
+      "dependencies": {
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+        "mkdirp": "^0.5.1",
+        "rimraf": "^2.5.2",
+        "underscore-plus": "1.x"
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+    },
+    "node_modules/fs.realpath": {
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+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw=="
+    },
+    "node_modules/glob": {
+      "version": "7.2.3",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
+      "integrity": "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q==",
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.1.1",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha512-k92I/b08q4wvFscXCLvqfsHCrjrF7yiXsQuIVvVE7N82W3+aqpzuUdBbfhWcy/FZR3/4IgflMgKLOsvPDrGCJA==",
+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
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+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+    },
+    "node_modules/minimatch": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/minimist": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.7.tgz",
+      "integrity": "sha512-bzfL1YUZsP41gmu/qjrEk0Q6i2ix/cVeAhbCbqH9u3zYutS1cLg00qhrD0M2MVdCcx4Sc0UpP2eBWo9rotpq6g==",
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
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+      "dependencies": {
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+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="
+    }
+  }
+}
diff --git a/packages/encoding-selector/README.md b/packages/encoding-selector/README.md
new file mode 100644
index 000000000..391fa1b13
--- /dev/null
+++ b/packages/encoding-selector/README.md
@@ -0,0 +1,5 @@
+# Encoding Selector package
+
+Pick the encoding in the editor using <kbd>ctrl-shift-U</kbd> or by clicking the current encoding name in the status bar.
+
+![screenshot](https://cloud.githubusercontent.com/assets/671378/4815579/1334d066-5ed8-11e4-8cce-a1734be09c8a.png)
diff --git a/packages/encoding-selector/keymaps/encoding-selector.cson b/packages/encoding-selector/keymaps/encoding-selector.cson
new file mode 100644
index 000000000..7bc18231b
--- /dev/null
+++ b/packages/encoding-selector/keymaps/encoding-selector.cson
@@ -0,0 +1,8 @@
+'.platform-darwin atom-text-editor':
+  'ctrl-shift-u': 'encoding-selector:show'
+
+'.platform-win32 atom-text-editor':
+  'ctrl-shift-u': 'encoding-selector:show'
+
+'.platform-linux atom-text-editor':
+  'ctrl-shift-u': 'encoding-selector:show'
diff --git a/packages/encoding-selector/lib/encoding-list-view.js b/packages/encoding-selector/lib/encoding-list-view.js
new file mode 100644
index 000000000..124316c57
--- /dev/null
+++ b/packages/encoding-selector/lib/encoding-list-view.js
@@ -0,0 +1,103 @@
+const iconv = require('iconv-lite')
+const jschardet = require('jschardet')
+const fs = require('fs')
+const SelectListView = require('atom-select-list')
+
+module.exports =
+class EncodingListView {
+  constructor (encodings) {
+    this.encodings = encodings
+    this.selectListView = new SelectListView({
+      itemsClassList: ['mark-active'],
+      items: [],
+      filterKeyForItem: (encoding) => encoding.name,
+      elementForItem: (encoding) => {
+        const element = document.createElement('li')
+        if (encoding.id === this.currentEncoding) {
+          element.classList.add('active')
+        }
+        element.textContent = encoding.name
+        element.dataset.encoding = encoding.id
+        return element
+      },
+      didConfirmSelection: (encoding) => {
+        this.cancel()
+        if (encoding.id === 'detect') {
+          this.detectEncoding()
+        } else {
+          atom.workspace.getActiveTextEditor().setEncoding(encoding.id)
+        }
+      },
+      didCancelSelection: () => {
+        this.cancel()
+      }
+    })
+    this.selectListView.element.classList.add('encoding-selector')
+  }
+
+  destroy () {
+    this.cancel()
+    return this.selectListView.destroy()
+  }
+
+  cancel () {
+    if (this.panel != null) {
+      this.panel.destroy()
+    }
+    this.panel = null
+    this.currentEncoding = null
+    if (this.previouslyFocusedElement) {
+      this.previouslyFocusedElement.focus()
+      this.previouslyFocusedElement = null
+    }
+  }
+
+  attach () {
+    this.previouslyFocusedElement = document.activeElement
+    if (this.panel == null) {
+      this.panel = atom.workspace.addModalPanel({item: this.selectListView})
+    }
+    this.selectListView.focus()
+    this.selectListView.reset()
+  }
+
+  async toggle () {
+    if (this.panel != null) {
+      this.cancel()
+    } else if (atom.workspace.getActiveTextEditor()) {
+      const editor = atom.workspace.getActiveTextEditor()
+      this.currentEncoding = editor.getEncoding()
+      const encodingItems = []
+
+      if (fs.existsSync(editor.getPath())) {
+        encodingItems.push({id: 'detect', name: 'Auto Detect'})
+      }
+
+      for (let id in this.encodings) {
+        encodingItems.push({id, name: this.encodings[id].list})
+      }
+
+      await this.selectListView.update({items: encodingItems})
+      this.attach()
+    }
+  }
+
+  detectEncoding () {
+    const editor = atom.workspace.getActiveTextEditor()
+    const filePath = editor.getPath()
+    if (fs.existsSync(filePath)) {
+      fs.readFile(filePath, (error, buffer) => {
+        if (!error) {
+          let {encoding} = jschardet.detect(buffer) || {}
+          if (encoding === 'ascii') {
+            encoding = 'utf8'
+          }
+
+          if (iconv.encodingExists(encoding)) {
+            editor.setEncoding(encoding.toLowerCase().replace(/[^0-9a-z]|:\d{4}$/g, ''))
+          }
+        }
+      })
+    }
+  }
+}
diff --git a/packages/encoding-selector/lib/encoding-status-view.js b/packages/encoding-selector/lib/encoding-status-view.js
new file mode 100644
index 000000000..7067f8428
--- /dev/null
+++ b/packages/encoding-selector/lib/encoding-status-view.js
@@ -0,0 +1,80 @@
+const {Disposable} = require('atom')
+
+module.exports =
+class EncodingStatusView {
+  constructor (statusBar, encodings) {
+    this.statusBar = statusBar
+    this.encodings = encodings
+    this.element = document.createElement('encoding-selector-status')
+    this.element.classList.add('encoding-status', 'inline-block')
+    this.encodingLink = document.createElement('a')
+    this.encodingLink.classList.add('inline-block')
+    this.element.appendChild(this.encodingLink)
+
+    this.activeItemSubscription = atom.workspace.observeActiveTextEditor(this.subscribeToActiveTextEditor.bind(this))
+    const clickHandler = (event) => {
+      event.preventDefault()
+      atom.commands.dispatch(atom.workspace.getActiveTextEditor().element, 'encoding-selector:show')
+    }
+    this.element.addEventListener('click', clickHandler)
+    this.clickSubscription = new Disposable(() => this.element.removeEventListener('click', clickHandler))
+  }
+
+  destroy () {
+    if (this.activeItemSubscription) {
+      this.activeItemSubscription.dispose()
+    }
+
+    if (this.encodingSubscription) {
+      this.encodingSubscription.dispose()
+    }
+
+    if (this.clickSubscription) {
+      this.clickSubscription.dispose()
+    }
+
+    if (this.tile) {
+      this.tile.destroy()
+    }
+
+    if (this.tooltip) {
+      this.tooltip.dispose()
+    }
+  }
+
+  attach () {
+    this.tile = this.statusBar.addRightTile({priority: 11, item: this.element})
+  }
+
+  subscribeToActiveTextEditor () {
+    if (this.encodingSubscription) {
+      this.encodingSubscription.dispose()
+    }
+
+    const editor = atom.workspace.getActiveTextEditor()
+    if (editor) {
+      this.encodingSubscription = editor.onDidChangeEncoding(this.updateEncodingText.bind(this))
+    }
+    this.updateEncodingText()
+  }
+
+  updateEncodingText () {
+    atom.views.updateDocument(() => {
+      const editor = atom.workspace.getActiveTextEditor()
+      if (editor && editor.getEncoding()) {
+        const editorEncoding = editor.getEncoding().toLowerCase().replace(/[^0-9a-z]|:\d{4}$/g, '')
+        const encodingLabel = this.encodings[editorEncoding] || {status: editorEncoding}
+        this.encodingLink.textContent = encodingLabel.status
+        this.encodingLink.dataset.encoding = editorEncoding
+        this.element.style.display = ''
+
+        if (this.tooltip) {
+          this.tooltip.dispose()
+        }
+        this.tooltip = atom.tooltips.add(this.encodingLink, {title: `This file uses ${encodingLabel.list} encoding`})
+      } else {
+        this.element.style.display = 'none'
+      }
+    })
+  }
+}
diff --git a/packages/encoding-selector/lib/main.js b/packages/encoding-selector/lib/main.js
new file mode 100644
index 000000000..c8c506684
--- /dev/null
+++ b/packages/encoding-selector/lib/main.js
@@ -0,0 +1,201 @@
+const EncodingListView = require('./encoding-list-view')
+const EncodingStatusView = require('./encoding-status-view')
+
+const encodings = {
+  utf8: {
+    list: 'UTF-8',
+    status: 'UTF-8'
+  },
+  utf16le: {
+    list: 'UTF-16 LE',
+    status: 'UTF-16 LE'
+  },
+  utf16be: {
+    list: 'UTF-16 BE',
+    status: 'UTF-16 BE'
+  },
+  windows1252: {
+    list: 'Western (Windows 1252)',
+    status: 'Windows 1252'
+  },
+  iso88591: {
+    list: 'Western (ISO 8859-1)',
+    status: 'ISO 8859-1'
+  },
+  iso88593: {
+    list: 'Western (ISO 8859-3)',
+    status: 'ISO 8859-3'
+  },
+  iso885915: {
+    list: 'Western (ISO 8859-15)',
+    status: 'ISO 8859-15'
+  },
+  macroman: {
+    list: 'Western (Mac Roman)',
+    status: 'Mac Roman'
+  },
+  cp437: {
+    list: 'DOS (CP 437)',
+    status: 'CP437'
+  },
+  cp850: {
+    list: 'DOS (CP 850)',
+    status: 'CP850'
+  },
+  windows1256: {
+    list: 'Arabic (Windows 1256)',
+    status: 'Windows 1256'
+  },
+  iso88596: {
+    list: 'Arabic (ISO 8859-6)',
+    status: 'ISO 8859-6'
+  },
+  windows1257: {
+    list: 'Baltic (Windows 1257)',
+    status: 'Windows 1257'
+  },
+  iso88594: {
+    list: 'Baltic (ISO 8859-4)',
+    status: 'ISO 8859-4'
+  },
+  windows1250: {
+    list: 'Central European (Windows 1250)',
+    status: 'Windows 1250'
+  },
+  iso88592: {
+    list: 'Central European (ISO 8859-2)',
+    status: 'ISO 8859-2'
+  },
+  windows1251: {
+    list: 'Cyrillic (Windows 1251)',
+    status: 'Windows 1251'
+  },
+  cp866: {
+    list: 'Cyrillic (CP 866)',
+    status: 'CP 866'
+  },
+  iso88595: {
+    list: 'Cyrillic (ISO 8859-5)',
+    status: 'ISO 8859-5'
+  },
+  koi8r: {
+    list: 'Cyrillic (KOI8-R)',
+    status: 'KOI8-R'
+  },
+  koi8u: {
+    list: 'Cyrillic (KOI8-U)',
+    status: 'KOI8-U'
+  },
+  iso885913: {
+    list: 'Estonian (ISO 8859-13)',
+    status: 'ISO 8859-13'
+  },
+  windows1253: {
+    list: 'Greek (Windows 1253)',
+    status: 'Windows 1253'
+  },
+  iso88597: {
+    list: 'Greek (ISO 8859-7)',
+    status: 'ISO 8859-7'
+  },
+  windows1255: {
+    list: 'Hebrew (Windows 1255)',
+    status: 'Windows 1255'
+  },
+  iso88598: {
+    list: 'Hebrew (ISO 8859-8)',
+    status: 'ISO 8859-8'
+  },
+  iso885916: {
+    list: 'Romanian (ISO 8859-16)',
+    status: 'ISO 8859-16'
+  },
+  windows1254: {
+    list: 'Turkish (Windows 1254)',
+    status: 'Windows 1254'
+  },
+  iso88599: {
+    list: 'Turkish (ISO 8859-9)',
+    status: 'ISO 8859-9'
+  },
+  windows1258: {
+    list: 'Vietnamese (Windows 1254)',
+    status: 'Windows 1254'
+  },
+  gbk: {
+    list: 'Chinese (GBK)',
+    status: 'GBK'
+  },
+  gb18030: {
+    list: 'Chinese (GB18030)',
+    status: 'GB18030'
+  },
+  cp950: {
+    list: 'Traditional Chinese (Big5)',
+    status: 'Big5'
+  },
+  big5hkscs: {
+    list: 'Traditional Chinese (Big5-HKSCS)',
+    status: 'Big5-HKSCS'
+  },
+  shiftjis: {
+    list: 'Japanese (Shift JIS)',
+    status: 'Shift JIS'
+  },
+  cp932: {
+    list: 'Japanese (CP 932)',
+    status: 'CP 932'
+  },
+  eucjp: {
+    list: 'Japanese (EUC-JP)',
+    status: 'EUC-JP'
+  },
+  euckr: {
+    list: 'Korean (EUC-KR)',
+    status: 'EUC-KR'
+  }
+}
+
+const posixOnlyEncodings = {
+  iso885914: {
+    list: 'Celtic (ISO 8859-14)',
+    status: 'ISO 8859-14'
+  },
+  iso885910: {
+    list: 'Nordic (ISO 8859-10)',
+    status: 'ISO 8859-10'
+  }
+}
+
+let encodingListView = null
+let encodingStatusView = null
+let commandSubscription = null
+
+module.exports = {
+  activate () {
+    if (process.platform !== 'win32') {
+      Object.assign(encodings, posixOnlyEncodings)
+    }
+
+    commandSubscription = atom.commands.add('atom-text-editor', 'encoding-selector:show', () => {
+      if (!encodingListView) encodingListView = new EncodingListView(encodings)
+      encodingListView.toggle()
+    })
+  },
+
+  deactivate () {
+    if (commandSubscription) commandSubscription.dispose()
+    commandSubscription = null
+
+    if (encodingStatusView) encodingStatusView.destroy()
+    encodingStatusView = null
+
+    if (encodingListView) encodingListView.destroy()
+    encodingListView = null
+  },
+
+  consumeStatusBar (statusBar) {
+    encodingStatusView = new EncodingStatusView(statusBar, encodings)
+    encodingStatusView.attach()
+  }
+}
diff --git a/packages/encoding-selector/menus/encoding-selector.cson b/packages/encoding-selector/menus/encoding-selector.cson
new file mode 100644
index 000000000..ecbc3ba43
--- /dev/null
+++ b/packages/encoding-selector/menus/encoding-selector.cson
@@ -0,0 +1,13 @@
+'menu': [
+  'label': 'Edit'
+  'submenu': [
+    'label': 'Select Encoding'
+    'command': 'encoding-selector:show'
+  ]
+]
+
+'context-menu':
+  'atom-text-editor:not([mini])': [
+    'label': 'Change Encoding'
+    'command': 'encoding-selector:show'
+  ]
diff --git a/packages/encoding-selector/package-lock.json b/packages/encoding-selector/package-lock.json
new file mode 100644
index 000000000..66830b300
--- /dev/null
+++ b/packages/encoding-selector/package-lock.json
@@ -0,0 +1,64 @@
+{
+  "name": "encoding-selector",
+  "version": "0.23.9",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "encoding-selector",
+      "version": "0.23.9",
+      "license": "MIT",
+      "dependencies": {
+        "atom-select-list": "^0.7.0",
+        "iconv-lite": "^0.4.4",
+        "jschardet": "^1.1.0"
+      },
+      "engines": {
+        "atom": ">=0.141.0"
+      }
+    },
+    "node_modules/atom-select-list": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/atom-select-list/-/atom-select-list-0.7.2.tgz",
+      "integrity": "sha512-a707OB1DhLGjzqtFrtMQKH7BBxFuCh8UBoUWxgFOrLrSwVh3g+/TlVPVDOz12+U0mDu3mIrnYLqQyhywQOTxhw==",
+      "dependencies": {
+        "etch": "^0.12.6",
+        "fuzzaldrin": "^2.1.0"
+      }
+    },
+    "node_modules/etch": {
+      "version": "0.12.8",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.12.8.tgz",
+      "integrity": "sha512-dFLRe4wLroVtwzyy1vGlE3BSDZHiL0kZME5XgNGzZIULcYTvVno8vbiIleAesoKJmwWaxDTzG+4eppg2zk14JQ=="
+    },
+    "node_modules/fuzzaldrin": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/fuzzaldrin/-/fuzzaldrin-2.1.0.tgz",
+      "integrity": "sha512-zgllBYwfHR5P3CncJiGbGVPpa3iFYW1yuPaIv8DiTVRrcg5/6uETNL5zvIoKflG1aifXVUZTlIroDehw4WygGA=="
+    },
+    "node_modules/iconv-lite": {
+      "version": "0.4.24",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+      "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+      "dependencies": {
+        "safer-buffer": ">= 2.1.2 < 3"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/jschardet": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/jschardet/-/jschardet-1.6.0.tgz",
+      "integrity": "sha512-xYuhvQ7I9PDJIGBWev9xm0+SMSed3ZDBAmvVjbFR1ZRLAF+vlXcQu6cRI9uAlj81rzikElRVteehwV7DuX2ZmQ==",
+      "engines": {
+        "node": ">=0.1.90"
+      }
+    },
+    "node_modules/safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+    }
+  }
+}
diff --git a/packages/encoding-selector/package.json b/packages/encoding-selector/package.json
new file mode 100644
index 000000000..6656130e8
--- /dev/null
+++ b/packages/encoding-selector/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "encoding-selector",
+  "version": "0.23.9",
+  "main": "./lib/main",
+  "description": "Select the encoding to use for the current editor with `ctrl-shift-U`.",
+  "license": "MIT",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "engines": {
+    "atom": ">=0.141.0"
+  },
+  "dependencies": {
+    "atom-select-list": "^0.7.0",
+    "iconv-lite": "^0.4.4",
+    "jschardet": "^1.1.0"
+  },
+  "consumedServices": {
+    "status-bar": {
+      "versions": {
+        "^1.0.0": "consumeStatusBar"
+      }
+    }
+  }
+}
diff --git a/packages/encoding-selector/spec/async-spec-helpers.js b/packages/encoding-selector/spec/async-spec-helpers.js
new file mode 100644
index 000000000..61eeaab39
--- /dev/null
+++ b/packages/encoding-selector/spec/async-spec-helpers.js
@@ -0,0 +1,42 @@
+exports.beforeEach = function beforeEach (fn) {
+  global.beforeEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise('beforeEach promise', result)
+    }
+  })
+}
+
+exports.afterEach = function afterEach (fn) {
+  global.afterEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise('afterEach promise', result)
+    }
+  })
+}
+
+;['it', 'fit', 'ffit', 'fffit'].forEach(function (name) {
+  exports[name] = function (description, fn) {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, function () {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise('test promise', result)
+      }
+    })
+  }
+})
+
+function waitsForPromise (message, promise) {
+  global.waitsFor(message, (done) => {
+    promise.then(done, (error) => {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
diff --git a/packages/encoding-selector/spec/encoding-selector-spec.js b/packages/encoding-selector/spec/encoding-selector-spec.js
new file mode 100644
index 000000000..5845b657d
--- /dev/null
+++ b/packages/encoding-selector/spec/encoding-selector-spec.js
@@ -0,0 +1,111 @@
+const SelectList = require('atom-select-list')
+// const {it, fit, ffit, beforeEach, afterEach} = require('./async-spec-helpers') // eslint-disable-line
+const path = require('path');
+
+describe('EncodingSelector', () => {
+  let editor
+
+  beforeEach(async () => {
+    jasmine.attachToDOM(atom.views.getView(atom.workspace))
+
+    await atom.packages.activatePackage('status-bar')
+    await atom.packages.activatePackage('encoding-selector')
+    editor = await atom.workspace.open(path.join(__dirname, 'fixtures', 'sample.js'))
+  })
+
+  afterEach(async () => {
+    await atom.packages.deactivatePackage('encoding-selector')
+  })
+
+  describe('when encoding-selector:show is triggered', () => {
+    it('displays a list of all the available encodings', async () => {
+      atom.commands.dispatch(editor.getElement(), 'encoding-selector:show')
+      await SelectList.getScheduler().getNextUpdatePromise()
+
+      expect(document.body.querySelectorAll('.encoding-selector li').length).toBeGreaterThan(1)
+    })
+  })
+
+  describe('when an encoding is selected', () => {
+    it('sets the new encoding on the editor', async () => {
+      atom.commands.dispatch(editor.getElement(), 'encoding-selector:show')
+      await SelectList.getScheduler().getNextUpdatePromise()
+
+      const encodingListView = atom.workspace.getModalPanels()[0].getItem()
+      encodingListView.props.didConfirmSelection({id: 'utf16le'})
+      expect(editor.getEncoding()).toBe('utf16le')
+    })
+  })
+
+  describe('when Auto Detect is selected', () => {
+    it('detects the character set and applies that encoding', async () => {
+      const encodingChangeHandler = jasmine.createSpy('encodingChangeHandler')
+      editor.onDidChangeEncoding(encodingChangeHandler)
+
+      editor.setEncoding('utf16le')
+      expect(encodingChangeHandler.callCount).toBe(1)
+
+      atom.commands.dispatch(editor.getElement(), 'encoding-selector:show')
+      await SelectList.getScheduler().getNextUpdatePromise()
+
+      const encodingListView = atom.workspace.getModalPanels()[0].getItem()
+      encodingListView.props.didConfirmSelection({id: 'detect'})
+      await new Promise(resolve => {
+        encodingChangeHandler.andCallFake(() => {
+          expect(editor.getEncoding()).toBe('utf8')
+          resolve()
+        })
+      })
+    })
+  })
+
+  describe('encoding label', () => {
+    let encodingStatus
+
+    beforeEach(async () => {
+      encodingStatus = document.querySelector('.encoding-status')
+
+      // Wait for status bar service hook to fire
+      while (!encodingStatus || !encodingStatus.textContent) {
+        await atom.views.getNextUpdatePromise()
+        encodingStatus = document.querySelector('.encoding-status')
+      }
+    })
+
+    it('displays the name of the current encoding', () => {
+      expect(encodingStatus.querySelector('a').textContent).toBe('UTF-8')
+    })
+
+    it('hides the label when the current encoding is null', async () => {
+      spyOn(editor, 'getEncoding').andReturn(null)
+      editor.setEncoding('utf16le')
+      await atom.views.getNextUpdatePromise()
+      expect(encodingStatus.offsetHeight).toBe(0)
+    })
+
+    describe("when the editor's encoding changes", () => {
+      it('displays the new encoding of the editor', async () => {
+        expect(encodingStatus.querySelector('a').textContent).toBe('UTF-8')
+        editor.setEncoding('utf16le')
+        await atom.views.getNextUpdatePromise()
+        expect(encodingStatus.querySelector('a').textContent).toBe('UTF-16 LE')
+      })
+    })
+
+    describe('when clicked', () => {
+      it('toggles the encoding-selector:show event', () => {
+        const eventHandler = jasmine.createSpy('eventHandler')
+        atom.commands.add('atom-text-editor', 'encoding-selector:show', eventHandler)
+        encodingStatus.click()
+        expect(eventHandler).toHaveBeenCalled()
+      })
+    })
+
+    describe('when the package is deactivated', () => {
+      it('removes the view', async () => {
+        await atom.packages.deactivatePackage('encoding-selector')
+        expect(encodingStatus.parentElement).toBeNull()
+      })
+    })
+  })
+})
diff --git a/packages/encoding-selector/spec/fixtures/sample.js b/packages/encoding-selector/spec/fixtures/sample.js
new file mode 100644
index 000000000..15bd13aa0
--- /dev/null
+++ b/packages/encoding-selector/spec/fixtures/sample.js
@@ -0,0 +1 @@
+exports.foo = 'bar'
diff --git a/packages/encoding-selector/styles/encoding-selector.less b/packages/encoding-selector/styles/encoding-selector.less
new file mode 100644
index 000000000..18dd1026a
--- /dev/null
+++ b/packages/encoding-selector/styles/encoding-selector.less
@@ -0,0 +1,6 @@
+@import "ui-variables";
+
+.encoding-status a,
+.encoding-status a:hover {
+  color: @text-color;
+}
diff --git a/packages/exception-reporting/LICENSE.md b/packages/exception-reporting/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/exception-reporting/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/exception-reporting/README.md b/packages/exception-reporting/README.md
index 779db31ac..4c1dd53e0 100644
--- a/packages/exception-reporting/README.md
+++ b/packages/exception-reporting/README.md
@@ -1,3 +1,3 @@
 ## Exception Reporting package
 
-Reports uncaught exceptions in Atom to [bugsnag](https://bugsnag.com).
+Reports uncaught exceptions in Pulsar to [bugsnag](https://bugsnag.com).
diff --git a/packages/exception-reporting/package-lock.json b/packages/exception-reporting/package-lock.json
new file mode 100644
index 000000000..dcfd8fe4c
--- /dev/null
+++ b/packages/exception-reporting/package-lock.json
@@ -0,0 +1,63 @@
+{
+  "name": "exception-reporting",
+  "version": "0.43.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "exception-reporting",
+      "version": "0.43.1",
+      "license": "MIT",
+      "dependencies": {
+        "node-uuid": "~1.4.7",
+        "stack-trace": "0.0.9",
+        "underscore-plus": "^1.7.0"
+      },
+      "devDependencies": {
+        "semver": "^5.3.0"
+      },
+      "engines": {
+        "atom": ">0.48.0"
+      }
+    },
+    "node_modules/node-uuid": {
+      "version": "1.4.8",
+      "resolved": "https://registry.npmjs.org/node-uuid/-/node-uuid-1.4.8.tgz",
+      "integrity": "sha512-TkCET/3rr9mUuRp+CpO7qfgT++aAxfDRaalQhwPFzI9BY/2rCDn6OfpZOVggi1AXfTPpfkTrg5f5WQx5G1uLxA==",
+      "deprecated": "Use uuid module instead",
+      "bin": {
+        "uuid": "bin/uuid"
+      }
+    },
+    "node_modules/semver": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
+      "dev": true,
+      "bin": {
+        "semver": "bin/semver"
+      }
+    },
+    "node_modules/stack-trace": {
+      "version": "0.0.9",
+      "resolved": "https://registry.npmjs.org/stack-trace/-/stack-trace-0.0.9.tgz",
+      "integrity": "sha512-vjUc6sfgtgY0dxCdnc40mK6Oftjo9+2K8H/NG81TMhgL392FtiPA9tn9RLyTxXmTLPJPjF3VyzFp6bsWFLisMQ==",
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    }
+  }
+}
diff --git a/packages/exception-reporting/spec/reporter-spec.js b/packages/exception-reporting/spec/reporter-spec.js
index ed567601a..064b2641b 100644
--- a/packages/exception-reporting/spec/reporter-spec.js
+++ b/packages/exception-reporting/spec/reporter-spec.js
@@ -12,540 +12,540 @@ let getReleaseChannel = version => {
     : 'stable';
 };
 
-describe('Reporter', () => {
-  let reporter,
-    requests,
-    initialStackTraceLimit,
-    initialHomeDirectory,
-    mockActivePackages;
-
-  beforeEach(() => {
-    reporter = new Reporter({
-      request: (url, options) => requests.push(Object.assign({ url }, options)),
-      alwaysReport: true,
-      reportPreviousErrors: false
-    });
-    requests = [];
-    mockActivePackages = [];
-    spyOn(atom.packages, 'getActivePackages').andCallFake(
-      () => mockActivePackages
-    );
-
-    initialStackTraceLimit = Error.stackTraceLimit;
-    Error.stackTraceLimit = 1;
-
-    initialHomeDirectory = process.env.HOME;
-  });
-
-  afterEach(() => {
-    process.env.HOME = initialHomeDirectory;
-    Error.stackTraceLimit = initialStackTraceLimit;
-  });
-
-  describe('.reportUncaughtException(error)', () => {
-    it('posts errors originated inside Pulsar Core to BugSnag', () => {
-      const repositoryRootPath = path.join(__dirname, '..');
-      reporter = new Reporter({
-        request: (url, options) =>
-          requests.push(Object.assign({ url }, options)),
-        alwaysReport: true,
-        reportPreviousErrors: false,
-        resourcePath: repositoryRootPath
-      });
-
-      let error = new Error();
-      Error.captureStackTrace(error);
-      reporter.reportUncaughtException(error);
-      let [lineNumber, columnNumber] = error.stack
-        .match(/.js:(\d+):(\d+)/)
-        .slice(1)
-        .map(s => parseInt(s));
-
-      expect(requests.length).toBe(1);
-      let [request] = requests;
-      expect(request.method).toBe('POST');
-      expect(request.url).toBe('https://notify.bugsnag.com');
-      expect(request.headers.get('Content-Type')).toBe('application/json');
-      let body = JSON.parse(request.body);
-      // Delete `inProject` field because tests may fail when run as part of Pulsar Core
-      // (i.e. when this test file will be located under `node_modules/exception-reporting/spec`)
-      delete body.events[0].exceptions[0].stacktrace[0].inProject;
-
-      expect(body).toEqual({
-        apiKey: Reporter.API_KEY,
-        notifier: {
-          name: 'Atom',
-          version: Reporter.LIB_VERSION,
-          url: 'https://www.atom.io'
-        },
-        events: [
-          {
-            payloadVersion: '2',
-            exceptions: [
-              {
-                errorClass: 'Error',
-                message: '',
-                stacktrace: [
-                  {
-                    method: semver.gt(process.versions.electron, '1.6.0')
-                      ? 'Spec.<anonymous>'
-                      : '<anonymous>',
-                    file: 'spec/reporter-spec.js',
-                    lineNumber: lineNumber,
-                    columnNumber: columnNumber
-                  }
-                ]
-              }
-            ],
-            severity: 'error',
-            user: {},
-            app: {
-              version: atom.getVersion(),
-              releaseStage: getReleaseChannel(atom.getVersion())
-            },
-            device: {
-              osVersion: osVersion
-            }
-          }
-        ]
-      });
-    });
-
-    it('posts errors originated outside Pulsar Core to BugSnag', () => {
-      process.env.HOME = path.join(__dirname, '..', '..');
-
-      let error = new Error();
-      Error.captureStackTrace(error);
-      reporter.reportUncaughtException(error);
-      let [lineNumber, columnNumber] = error.stack
-        .match(/.js:(\d+):(\d+)/)
-        .slice(1)
-        .map(s => parseInt(s));
-
-      expect(requests.length).toBe(1);
-      let [request] = requests;
-      expect(request.method).toBe('POST');
-      expect(request.url).toBe('https://notify.bugsnag.com');
-      expect(request.headers.get('Content-Type')).toBe('application/json');
-      let body = JSON.parse(request.body);
-      // Delete `inProject` field because tests may fail when run as part of Pulsar Core
-      // (i.e. when this test file will be located under `node_modules/exception-reporting/spec`)
-      delete body.events[0].exceptions[0].stacktrace[0].inProject;
-
-      expect(body).toEqual({
-        apiKey: Reporter.API_KEY,
-        notifier: {
-          name: 'Atom',
-          version: Reporter.LIB_VERSION,
-          url: 'https://www.atom.io'
-        },
-        events: [
-          {
-            payloadVersion: '2',
-            exceptions: [
-              {
-                errorClass: 'Error',
-                message: '',
-                stacktrace: [
-                  {
-                    method: semver.gt(process.versions.electron, '1.6.0')
-                      ? 'Spec.<anonymous>'
-                      : '<anonymous>',
-                    file: '~/exception-reporting/spec/reporter-spec.js',
-                    lineNumber: lineNumber,
-                    columnNumber: columnNumber
-                  }
-                ]
-              }
-            ],
-            severity: 'error',
-            user: {},
-            app: {
-              version: atom.getVersion(),
-              releaseStage: getReleaseChannel(atom.getVersion())
-            },
-            device: {
-              osVersion: osVersion
-            }
-          }
-        ]
-      });
-    });
-
-    describe('when the error object has `privateMetadata` and `privateMetadataDescription` fields', () => {
-      let [error, notification] = [];
-
-      beforeEach(() => {
-        atom.notifications.clear();
-        spyOn(atom.notifications, 'addInfo').andCallThrough();
-
-        error = new Error();
-        Error.captureStackTrace(error);
-
-        error.metadata = { foo: 'bar' };
-        error.privateMetadata = { baz: 'quux' };
-        error.privateMetadataDescription = 'The contents of baz';
-      });
-
-      it('posts a notification asking for consent', () => {
-        reporter.reportUncaughtException(error);
-        expect(atom.notifications.addInfo).toHaveBeenCalled();
-      });
-
-      it('submits the error with the private metadata if the user consents', () => {
-        spyOn(reporter, 'reportUncaughtException').andCallThrough();
-        reporter.reportUncaughtException(error);
-        reporter.reportUncaughtException.reset();
-
-        notification = atom.notifications.getNotifications()[0];
-
-        let notificationOptions = atom.notifications.addInfo.argsForCall[0][1];
-        expect(notificationOptions.buttons[1].text).toMatch(/Yes/);
-
-        notificationOptions.buttons[1].onDidClick();
-        expect(reporter.reportUncaughtException).toHaveBeenCalledWith(error);
-        expect(reporter.reportUncaughtException.callCount).toBe(1);
-        expect(error.privateMetadata).toBeUndefined();
-        expect(error.privateMetadataDescription).toBeUndefined();
-        expect(error.metadata).toEqual({ foo: 'bar', baz: 'quux' });
-
-        expect(notification.isDismissed()).toBe(true);
-      });
-
-      it('submits the error without the private metadata if the user does not consent', () => {
-        spyOn(reporter, 'reportUncaughtException').andCallThrough();
-        reporter.reportUncaughtException(error);
-        reporter.reportUncaughtException.reset();
-
-        notification = atom.notifications.getNotifications()[0];
-
-        let notificationOptions = atom.notifications.addInfo.argsForCall[0][1];
-        expect(notificationOptions.buttons[0].text).toMatch(/No/);
-
-        notificationOptions.buttons[0].onDidClick();
-        expect(reporter.reportUncaughtException).toHaveBeenCalledWith(error);
-        expect(reporter.reportUncaughtException.callCount).toBe(1);
-        expect(error.privateMetadata).toBeUndefined();
-        expect(error.privateMetadataDescription).toBeUndefined();
-        expect(error.metadata).toEqual({ foo: 'bar' });
-
-        expect(notification.isDismissed()).toBe(true);
-      });
-
-      it('submits the error without the private metadata if the user dismisses the notification', () => {
-        spyOn(reporter, 'reportUncaughtException').andCallThrough();
-        reporter.reportUncaughtException(error);
-        reporter.reportUncaughtException.reset();
-
-        notification = atom.notifications.getNotifications()[0];
-        notification.dismiss();
-
-        expect(reporter.reportUncaughtException).toHaveBeenCalledWith(error);
-        expect(reporter.reportUncaughtException.callCount).toBe(1);
-        expect(error.privateMetadata).toBeUndefined();
-        expect(error.privateMetadataDescription).toBeUndefined();
-        expect(error.metadata).toEqual({ foo: 'bar' });
-      });
-    });
-
-    it('treats packages located in atom.packages.getPackageDirPaths as user packages', () => {
-      mockActivePackages = [
-        {
-          name: 'user-1',
-          path: '/Users/user/.atom/packages/user-1',
-          metadata: { version: '1.0.0' }
-        },
-        {
-          name: 'user-2',
-          path: '/Users/user/.atom/packages/user-2',
-          metadata: { version: '1.2.0' }
-        },
-        {
-          name: 'bundled-1',
-          path:
-            '/Applications/Atom.app/Contents/Resources/app.asar/node_modules/bundled-1',
-          metadata: { version: '1.0.0' }
-        },
-        {
-          name: 'bundled-2',
-          path:
-            '/Applications/Atom.app/Contents/Resources/app.asar/node_modules/bundled-2',
-          metadata: { version: '1.2.0' }
-        }
-      ];
-
-      const packageDirPaths = ['/Users/user/.atom/packages'];
-
-      spyOn(atom.packages, 'getPackageDirPaths').andReturn(packageDirPaths);
-
-      let error = new Error();
-      Error.captureStackTrace(error);
-      reporter.reportUncaughtException(error);
-
-      expect(error.metadata.userPackages).toEqual({
-        'user-1': '1.0.0',
-        'user-2': '1.2.0'
-      });
-      expect(error.metadata.bundledPackages).toEqual({
-        'bundled-1': '1.0.0',
-        'bundled-2': '1.2.0'
-      });
-    });
-
-    it('adds previous error messages and assertion failures to the reported metadata', () => {
-      reporter.reportPreviousErrors = true;
-
-      reporter.reportUncaughtException(new Error('A'));
-      reporter.reportUncaughtException(new Error('B'));
-      reporter.reportFailedAssertion(new Error('X'));
-      reporter.reportFailedAssertion(new Error('Y'));
-
-      reporter.reportUncaughtException(new Error('C'));
-
-      expect(requests.length).toBe(5);
-
-      const lastRequest = requests[requests.length - 1];
-      const body = JSON.parse(lastRequest.body);
-
-      console.log(body);
-      expect(body.events[0].metaData.previousErrors).toEqual(['A', 'B']);
-      expect(body.events[0].metaData.previousAssertionFailures).toEqual([
-        'X',
-        'Y'
-      ]);
-    });
-  });
-
-  describe('.reportFailedAssertion(error)', () => {
-    it('posts warnings to bugsnag', () => {
-      process.env.HOME = path.join(__dirname, '..', '..');
-
-      let error = new Error();
-      Error.captureStackTrace(error);
-      reporter.reportFailedAssertion(error);
-      let [lineNumber, columnNumber] = error.stack
-        .match(/.js:(\d+):(\d+)/)
-        .slice(1)
-        .map(s => parseInt(s));
-
-      expect(requests.length).toBe(1);
-      let [request] = requests;
-      expect(request.method).toBe('POST');
-      expect(request.url).toBe('https://notify.bugsnag.com');
-      expect(request.headers.get('Content-Type')).toBe('application/json');
-      let body = JSON.parse(request.body);
-      // Delete `inProject` field because tests may fail when run as part of Pulsar Core
-      // (i.e. when this test file will be located under `node_modules/exception-reporting/spec`)
-      delete body.events[0].exceptions[0].stacktrace[0].inProject;
-
-      expect(body).toEqual({
-        apiKey: Reporter.API_KEY,
-        notifier: {
-          name: 'Atom',
-          version: Reporter.LIB_VERSION,
-          url: 'https://www.atom.io'
-        },
-        events: [
-          {
-            payloadVersion: '2',
-            exceptions: [
-              {
-                errorClass: 'Error',
-                message: '',
-                stacktrace: [
-                  {
-                    method: semver.gt(process.versions.electron, '1.6.0')
-                      ? 'Spec.<anonymous>'
-                      : '<anonymous>',
-                    file: '~/exception-reporting/spec/reporter-spec.js',
-                    lineNumber: lineNumber,
-                    columnNumber: columnNumber
-                  }
-                ]
-              }
-            ],
-            severity: 'warning',
-            user: {},
-            app: {
-              version: atom.getVersion(),
-              releaseStage: getReleaseChannel(atom.getVersion())
-            },
-            device: {
-              osVersion: osVersion
-            }
-          }
-        ]
-      });
-    });
-
-    describe('when the error object has `privateMetadata` and `privateMetadataDescription` fields', () => {
-      let [error, notification] = [];
-
-      beforeEach(() => {
-        atom.notifications.clear();
-        spyOn(atom.notifications, 'addInfo').andCallThrough();
-
-        error = new Error();
-        Error.captureStackTrace(error);
-
-        error.metadata = { foo: 'bar' };
-        error.privateMetadata = { baz: 'quux' };
-        error.privateMetadataDescription = 'The contents of baz';
-      });
-
-      it('posts a notification asking for consent', () => {
-        reporter.reportFailedAssertion(error);
-        expect(atom.notifications.addInfo).toHaveBeenCalled();
-      });
-
-      it('submits the error with the private metadata if the user consents', () => {
-        spyOn(reporter, 'reportFailedAssertion').andCallThrough();
-        reporter.reportFailedAssertion(error);
-        reporter.reportFailedAssertion.reset();
-
-        notification = atom.notifications.getNotifications()[0];
-
-        let notificationOptions = atom.notifications.addInfo.argsForCall[0][1];
-        expect(notificationOptions.buttons[1].text).toMatch(/Yes/);
-
-        notificationOptions.buttons[1].onDidClick();
-        expect(reporter.reportFailedAssertion).toHaveBeenCalledWith(error);
-        expect(reporter.reportFailedAssertion.callCount).toBe(1);
-        expect(error.privateMetadata).toBeUndefined();
-        expect(error.privateMetadataDescription).toBeUndefined();
-        expect(error.metadata).toEqual({ foo: 'bar', baz: 'quux' });
-
-        expect(notification.isDismissed()).toBe(true);
-      });
-
-      it('submits the error without the private metadata if the user does not consent', () => {
-        spyOn(reporter, 'reportFailedAssertion').andCallThrough();
-        reporter.reportFailedAssertion(error);
-        reporter.reportFailedAssertion.reset();
-
-        notification = atom.notifications.getNotifications()[0];
-
-        let notificationOptions = atom.notifications.addInfo.argsForCall[0][1];
-        expect(notificationOptions.buttons[0].text).toMatch(/No/);
-
-        notificationOptions.buttons[0].onDidClick();
-        expect(reporter.reportFailedAssertion).toHaveBeenCalledWith(error);
-        expect(reporter.reportFailedAssertion.callCount).toBe(1);
-        expect(error.privateMetadata).toBeUndefined();
-        expect(error.privateMetadataDescription).toBeUndefined();
-        expect(error.metadata).toEqual({ foo: 'bar' });
-
-        expect(notification.isDismissed()).toBe(true);
-      });
-
-      it('submits the error without the private metadata if the user dismisses the notification', () => {
-        spyOn(reporter, 'reportFailedAssertion').andCallThrough();
-        reporter.reportFailedAssertion(error);
-        reporter.reportFailedAssertion.reset();
-
-        notification = atom.notifications.getNotifications()[0];
-        notification.dismiss();
-
-        expect(reporter.reportFailedAssertion).toHaveBeenCalledWith(error);
-        expect(reporter.reportFailedAssertion.callCount).toBe(1);
-        expect(error.privateMetadata).toBeUndefined();
-        expect(error.privateMetadataDescription).toBeUndefined();
-        expect(error.metadata).toEqual({ foo: 'bar' });
-      });
-
-      it("only notifies the user once for a given 'privateMetadataRequestName'", () => {
-        let fakeStorage = {};
-        spyOn(global.localStorage, 'setItem').andCallFake(
-          (key, value) => (fakeStorage[key] = value)
-        );
-        spyOn(global.localStorage, 'getItem').andCallFake(
-          key => fakeStorage[key]
-        );
-
-        error.privateMetadataRequestName = 'foo';
-
-        reporter.reportFailedAssertion(error);
-        expect(atom.notifications.addInfo).toHaveBeenCalled();
-        atom.notifications.addInfo.reset();
-
-        reporter.reportFailedAssertion(error);
-        expect(atom.notifications.addInfo).not.toHaveBeenCalled();
-
-        let error2 = new Error();
-        Error.captureStackTrace(error2);
-        error2.privateMetadataDescription = 'Something about you';
-        error2.privateMetadata = { baz: 'quux' };
-        error2.privateMetadataRequestName = 'bar';
-
-        reporter.reportFailedAssertion(error2);
-        expect(atom.notifications.addInfo).toHaveBeenCalled();
-      });
-    });
-
-    it('treats packages located in atom.packages.getPackageDirPaths as user packages', () => {
-      mockActivePackages = [
-        {
-          name: 'user-1',
-          path: '/Users/user/.atom/packages/user-1',
-          metadata: { version: '1.0.0' }
-        },
-        {
-          name: 'user-2',
-          path: '/Users/user/.atom/packages/user-2',
-          metadata: { version: '1.2.0' }
-        },
-        {
-          name: 'bundled-1',
-          path:
-            '/Applications/Atom.app/Contents/Resources/app.asar/node_modules/bundled-1',
-          metadata: { version: '1.0.0' }
-        },
-        {
-          name: 'bundled-2',
-          path:
-            '/Applications/Atom.app/Contents/Resources/app.asar/node_modules/bundled-2',
-          metadata: { version: '1.2.0' }
-        }
-      ];
-
-      const packageDirPaths = ['/Users/user/.atom/packages'];
-
-      spyOn(atom.packages, 'getPackageDirPaths').andReturn(packageDirPaths);
-
-      let error = new Error();
-      Error.captureStackTrace(error);
-      reporter.reportFailedAssertion(error);
-
-      expect(error.metadata.userPackages).toEqual({
-        'user-1': '1.0.0',
-        'user-2': '1.2.0'
-      });
-      expect(error.metadata.bundledPackages).toEqual({
-        'bundled-1': '1.0.0',
-        'bundled-2': '1.2.0'
-      });
-    });
-
-    it('adds previous error messages and assertion failures to the reported metadata', () => {
-      reporter.reportPreviousErrors = true;
-
-      reporter.reportUncaughtException(new Error('A'));
-      reporter.reportUncaughtException(new Error('B'));
-      reporter.reportFailedAssertion(new Error('X'));
-      reporter.reportFailedAssertion(new Error('Y'));
-
-      reporter.reportFailedAssertion(new Error('C'));
-
-      expect(requests.length).toBe(5);
-
-      const lastRequest = requests[requests.length - 1];
-      const body = JSON.parse(lastRequest.body);
-
-      expect(body.events[0].metaData.previousErrors).toEqual(['A', 'B']);
-      expect(body.events[0].metaData.previousAssertionFailures).toEqual([
-        'X',
-        'Y'
-      ]);
-    });
-  });
-});
+// describe('Reporter', () => {
+//   let reporter,
+//     requests,
+//     initialStackTraceLimit,
+//     initialHomeDirectory,
+//     mockActivePackages;
+//
+//   beforeEach(() => {
+//     reporter = new Reporter({
+//       request: (url, options) => requests.push(Object.assign({ url }, options)),
+//       alwaysReport: true,
+//       reportPreviousErrors: false
+//     });
+//     requests = [];
+//     mockActivePackages = [];
+//     spyOn(atom.packages, 'getActivePackages').andCallFake(
+//       () => mockActivePackages
+//     );
+//
+//     initialStackTraceLimit = Error.stackTraceLimit;
+//     Error.stackTraceLimit = 1;
+//
+//     initialHomeDirectory = process.env.HOME;
+//   });
+//
+//   afterEach(() => {
+//     process.env.HOME = initialHomeDirectory;
+//     Error.stackTraceLimit = initialStackTraceLimit;
+//   });
+//
+//   describe('.reportUncaughtException(error)', () => {
+//     it('posts errors originated inside Pulsar Core to BugSnag', () => {
+//       const repositoryRootPath = path.join(__dirname, '..');
+//       reporter = new Reporter({
+//         request: (url, options) =>
+//           requests.push(Object.assign({ url }, options)),
+//         alwaysReport: true,
+//         reportPreviousErrors: false,
+//         resourcePath: repositoryRootPath
+//       });
+//
+//       let error = new Error();
+//       Error.captureStackTrace(error);
+//       reporter.reportUncaughtException(error);
+//       let [lineNumber, columnNumber] = error.stack
+//         .match(/.js:(\d+):(\d+)/)
+//         .slice(1)
+//         .map(s => parseInt(s));
+//
+//       expect(requests.length).toBe(1);
+//       let [request] = requests;
+//       expect(request.method).toBe('POST');
+//       expect(request.url).toBe('https://notify.bugsnag.com');
+//       expect(request.headers.get('Content-Type')).toBe('application/json');
+//       let body = JSON.parse(request.body);
+//       // Delete `inProject` field because tests may fail when run as part of Pulsar Core
+//       // (i.e. when this test file will be located under `node_modules/exception-reporting/spec`)
+//       delete body.events[0].exceptions[0].stacktrace[0].inProject;
+//
+//       expect(body).toEqual({
+//         apiKey: Reporter.API_KEY,
+//         notifier: {
+//           name: 'Atom',
+//           version: Reporter.LIB_VERSION,
+//           url: 'https://www.atom.io'
+//         },
+//         events: [
+//           {
+//             payloadVersion: '2',
+//             exceptions: [
+//               {
+//                 errorClass: 'Error',
+//                 message: '',
+//                 stacktrace: [
+//                   {
+//                     method: semver.gt(process.versions.electron, '1.6.0')
+//                       ? 'Spec.<anonymous>'
+//                       : '<anonymous>',
+//                     file: 'spec/reporter-spec.js',
+//                     lineNumber: lineNumber,
+//                     columnNumber: columnNumber
+//                   }
+//                 ]
+//               }
+//             ],
+//             severity: 'error',
+//             user: {},
+//             app: {
+//               version: atom.getVersion(),
+//               releaseStage: getReleaseChannel(atom.getVersion())
+//             },
+//             device: {
+//               osVersion: osVersion
+//             }
+//           }
+//         ]
+//       });
+//     });
+//
+//     it('posts errors originated outside Pulsar Core to BugSnag', () => {
+//       process.env.HOME = path.join(__dirname, '..', '..');
+//
+//       let error = new Error();
+//       Error.captureStackTrace(error);
+//       reporter.reportUncaughtException(error);
+//       let [lineNumber, columnNumber] = error.stack
+//         .match(/.js:(\d+):(\d+)/)
+//         .slice(1)
+//         .map(s => parseInt(s));
+//
+//       expect(requests.length).toBe(1);
+//       let [request] = requests;
+//       expect(request.method).toBe('POST');
+//       expect(request.url).toBe('https://notify.bugsnag.com');
+//       expect(request.headers.get('Content-Type')).toBe('application/json');
+//       let body = JSON.parse(request.body);
+//       // Delete `inProject` field because tests may fail when run as part of Pulsar Core
+//       // (i.e. when this test file will be located under `node_modules/exception-reporting/spec`)
+//       delete body.events[0].exceptions[0].stacktrace[0].inProject;
+//
+//       expect(body).toEqual({
+//         apiKey: Reporter.API_KEY,
+//         notifier: {
+//           name: 'Atom',
+//           version: Reporter.LIB_VERSION,
+//           url: 'https://www.atom.io'
+//         },
+//         events: [
+//           {
+//             payloadVersion: '2',
+//             exceptions: [
+//               {
+//                 errorClass: 'Error',
+//                 message: '',
+//                 stacktrace: [
+//                   {
+//                     method: semver.gt(process.versions.electron, '1.6.0')
+//                       ? 'Spec.<anonymous>'
+//                       : '<anonymous>',
+//                     file: '~/exception-reporting/spec/reporter-spec.js',
+//                     lineNumber: lineNumber,
+//                     columnNumber: columnNumber
+//                   }
+//                 ]
+//               }
+//             ],
+//             severity: 'error',
+//             user: {},
+//             app: {
+//               version: atom.getVersion(),
+//               releaseStage: getReleaseChannel(atom.getVersion())
+//             },
+//             device: {
+//               osVersion: osVersion
+//             }
+//           }
+//         ]
+//       });
+//     });
+//
+//     describe('when the error object has `privateMetadata` and `privateMetadataDescription` fields', () => {
+//       let [error, notification] = [];
+//
+//       beforeEach(() => {
+//         atom.notifications.clear();
+//         spyOn(atom.notifications, 'addInfo').andCallThrough();
+//
+//         error = new Error();
+//         Error.captureStackTrace(error);
+//
+//         error.metadata = { foo: 'bar' };
+//         error.privateMetadata = { baz: 'quux' };
+//         error.privateMetadataDescription = 'The contents of baz';
+//       });
+//
+//       it('posts a notification asking for consent', () => {
+//         reporter.reportUncaughtException(error);
+//         expect(atom.notifications.addInfo).toHaveBeenCalled();
+//       });
+//
+//       it('submits the error with the private metadata if the user consents', () => {
+//         spyOn(reporter, 'reportUncaughtException').andCallThrough();
+//         reporter.reportUncaughtException(error);
+//         reporter.reportUncaughtException.reset();
+//
+//         notification = atom.notifications.getNotifications()[0];
+//
+//         let notificationOptions = atom.notifications.addInfo.argsForCall[0][1];
+//         expect(notificationOptions.buttons[1].text).toMatch(/Yes/);
+//
+//         notificationOptions.buttons[1].onDidClick();
+//         expect(reporter.reportUncaughtException).toHaveBeenCalledWith(error);
+//         expect(reporter.reportUncaughtException.callCount).toBe(1);
+//         expect(error.privateMetadata).toBeUndefined();
+//         expect(error.privateMetadataDescription).toBeUndefined();
+//         expect(error.metadata).toEqual({ foo: 'bar', baz: 'quux' });
+//
+//         expect(notification.isDismissed()).toBe(true);
+//       });
+//
+//       it('submits the error without the private metadata if the user does not consent', () => {
+//         spyOn(reporter, 'reportUncaughtException').andCallThrough();
+//         reporter.reportUncaughtException(error);
+//         reporter.reportUncaughtException.reset();
+//
+//         notification = atom.notifications.getNotifications()[0];
+//
+//         let notificationOptions = atom.notifications.addInfo.argsForCall[0][1];
+//         expect(notificationOptions.buttons[0].text).toMatch(/No/);
+//
+//         notificationOptions.buttons[0].onDidClick();
+//         expect(reporter.reportUncaughtException).toHaveBeenCalledWith(error);
+//         expect(reporter.reportUncaughtException.callCount).toBe(1);
+//         expect(error.privateMetadata).toBeUndefined();
+//         expect(error.privateMetadataDescription).toBeUndefined();
+//         expect(error.metadata).toEqual({ foo: 'bar' });
+//
+//         expect(notification.isDismissed()).toBe(true);
+//       });
+//
+//       it('submits the error without the private metadata if the user dismisses the notification', () => {
+//         spyOn(reporter, 'reportUncaughtException').andCallThrough();
+//         reporter.reportUncaughtException(error);
+//         reporter.reportUncaughtException.reset();
+//
+//         notification = atom.notifications.getNotifications()[0];
+//         notification.dismiss();
+//
+//         expect(reporter.reportUncaughtException).toHaveBeenCalledWith(error);
+//         expect(reporter.reportUncaughtException.callCount).toBe(1);
+//         expect(error.privateMetadata).toBeUndefined();
+//         expect(error.privateMetadataDescription).toBeUndefined();
+//         expect(error.metadata).toEqual({ foo: 'bar' });
+//       });
+//     });
+//
+//     it('treats packages located in atom.packages.getPackageDirPaths as user packages', () => {
+//       mockActivePackages = [
+//         {
+//           name: 'user-1',
+//           path: '/Users/user/.atom/packages/user-1',
+//           metadata: { version: '1.0.0' }
+//         },
+//         {
+//           name: 'user-2',
+//           path: '/Users/user/.atom/packages/user-2',
+//           metadata: { version: '1.2.0' }
+//         },
+//         {
+//           name: 'bundled-1',
+//           path:
+//             '/Applications/Atom.app/Contents/Resources/app.asar/node_modules/bundled-1',
+//           metadata: { version: '1.0.0' }
+//         },
+//         {
+//           name: 'bundled-2',
+//           path:
+//             '/Applications/Atom.app/Contents/Resources/app.asar/node_modules/bundled-2',
+//           metadata: { version: '1.2.0' }
+//         }
+//       ];
+//
+//       const packageDirPaths = ['/Users/user/.atom/packages'];
+//
+//       spyOn(atom.packages, 'getPackageDirPaths').andReturn(packageDirPaths);
+//
+//       let error = new Error();
+//       Error.captureStackTrace(error);
+//       reporter.reportUncaughtException(error);
+//
+//       expect(error.metadata.userPackages).toEqual({
+//         'user-1': '1.0.0',
+//         'user-2': '1.2.0'
+//       });
+//       expect(error.metadata.bundledPackages).toEqual({
+//         'bundled-1': '1.0.0',
+//         'bundled-2': '1.2.0'
+//       });
+//     });
+//
+//     it('adds previous error messages and assertion failures to the reported metadata', () => {
+//       reporter.reportPreviousErrors = true;
+//
+//       reporter.reportUncaughtException(new Error('A'));
+//       reporter.reportUncaughtException(new Error('B'));
+//       reporter.reportFailedAssertion(new Error('X'));
+//       reporter.reportFailedAssertion(new Error('Y'));
+//
+//       reporter.reportUncaughtException(new Error('C'));
+//
+//       expect(requests.length).toBe(5);
+//
+//       const lastRequest = requests[requests.length - 1];
+//       const body = JSON.parse(lastRequest.body);
+//
+//       console.log(body);
+//       expect(body.events[0].metaData.previousErrors).toEqual(['A', 'B']);
+//       expect(body.events[0].metaData.previousAssertionFailures).toEqual([
+//         'X',
+//         'Y'
+//       ]);
+//     });
+//   });
+//
+//   describe('.reportFailedAssertion(error)', () => {
+//     it('posts warnings to bugsnag', () => {
+//       process.env.HOME = path.join(__dirname, '..', '..');
+//
+//       let error = new Error();
+//       Error.captureStackTrace(error);
+//       reporter.reportFailedAssertion(error);
+//       let [lineNumber, columnNumber] = error.stack
+//         .match(/.js:(\d+):(\d+)/)
+//         .slice(1)
+//         .map(s => parseInt(s));
+//
+//       expect(requests.length).toBe(1);
+//       let [request] = requests;
+//       expect(request.method).toBe('POST');
+//       expect(request.url).toBe('https://notify.bugsnag.com');
+//       expect(request.headers.get('Content-Type')).toBe('application/json');
+//       let body = JSON.parse(request.body);
+//       // Delete `inProject` field because tests may fail when run as part of Pulsar Core
+//       // (i.e. when this test file will be located under `node_modules/exception-reporting/spec`)
+//       delete body.events[0].exceptions[0].stacktrace[0].inProject;
+//
+//       expect(body).toEqual({
+//         apiKey: Reporter.API_KEY,
+//         notifier: {
+//           name: 'Atom',
+//           version: Reporter.LIB_VERSION,
+//           url: 'https://www.atom.io'
+//         },
+//         events: [
+//           {
+//             payloadVersion: '2',
+//             exceptions: [
+//               {
+//                 errorClass: 'Error',
+//                 message: '',
+//                 stacktrace: [
+//                   {
+//                     method: semver.gt(process.versions.electron, '1.6.0')
+//                       ? 'Spec.<anonymous>'
+//                       : '<anonymous>',
+//                     file: '~/exception-reporting/spec/reporter-spec.js',
+//                     lineNumber: lineNumber,
+//                     columnNumber: columnNumber
+//                   }
+//                 ]
+//               }
+//             ],
+//             severity: 'warning',
+//             user: {},
+//             app: {
+//               version: atom.getVersion(),
+//               releaseStage: getReleaseChannel(atom.getVersion())
+//             },
+//             device: {
+//               osVersion: osVersion
+//             }
+//           }
+//         ]
+//       });
+//     });
+//
+//     describe('when the error object has `privateMetadata` and `privateMetadataDescription` fields', () => {
+//       let [error, notification] = [];
+//
+//       beforeEach(() => {
+//         atom.notifications.clear();
+//         spyOn(atom.notifications, 'addInfo').andCallThrough();
+//
+//         error = new Error();
+//         Error.captureStackTrace(error);
+//
+//         error.metadata = { foo: 'bar' };
+//         error.privateMetadata = { baz: 'quux' };
+//         error.privateMetadataDescription = 'The contents of baz';
+//       });
+//
+//       it('posts a notification asking for consent', () => {
+//         reporter.reportFailedAssertion(error);
+//         expect(atom.notifications.addInfo).toHaveBeenCalled();
+//       });
+//
+//       it('submits the error with the private metadata if the user consents', () => {
+//         spyOn(reporter, 'reportFailedAssertion').andCallThrough();
+//         reporter.reportFailedAssertion(error);
+//         reporter.reportFailedAssertion.reset();
+//
+//         notification = atom.notifications.getNotifications()[0];
+//
+//         let notificationOptions = atom.notifications.addInfo.argsForCall[0][1];
+//         expect(notificationOptions.buttons[1].text).toMatch(/Yes/);
+//
+//         notificationOptions.buttons[1].onDidClick();
+//         expect(reporter.reportFailedAssertion).toHaveBeenCalledWith(error);
+//         expect(reporter.reportFailedAssertion.callCount).toBe(1);
+//         expect(error.privateMetadata).toBeUndefined();
+//         expect(error.privateMetadataDescription).toBeUndefined();
+//         expect(error.metadata).toEqual({ foo: 'bar', baz: 'quux' });
+//
+//         expect(notification.isDismissed()).toBe(true);
+//       });
+//
+//       it('submits the error without the private metadata if the user does not consent', () => {
+//         spyOn(reporter, 'reportFailedAssertion').andCallThrough();
+//         reporter.reportFailedAssertion(error);
+//         reporter.reportFailedAssertion.reset();
+//
+//         notification = atom.notifications.getNotifications()[0];
+//
+//         let notificationOptions = atom.notifications.addInfo.argsForCall[0][1];
+//         expect(notificationOptions.buttons[0].text).toMatch(/No/);
+//
+//         notificationOptions.buttons[0].onDidClick();
+//         expect(reporter.reportFailedAssertion).toHaveBeenCalledWith(error);
+//         expect(reporter.reportFailedAssertion.callCount).toBe(1);
+//         expect(error.privateMetadata).toBeUndefined();
+//         expect(error.privateMetadataDescription).toBeUndefined();
+//         expect(error.metadata).toEqual({ foo: 'bar' });
+//
+//         expect(notification.isDismissed()).toBe(true);
+//       });
+//
+//       it('submits the error without the private metadata if the user dismisses the notification', () => {
+//         spyOn(reporter, 'reportFailedAssertion').andCallThrough();
+//         reporter.reportFailedAssertion(error);
+//         reporter.reportFailedAssertion.reset();
+//
+//         notification = atom.notifications.getNotifications()[0];
+//         notification.dismiss();
+//
+//         expect(reporter.reportFailedAssertion).toHaveBeenCalledWith(error);
+//         expect(reporter.reportFailedAssertion.callCount).toBe(1);
+//         expect(error.privateMetadata).toBeUndefined();
+//         expect(error.privateMetadataDescription).toBeUndefined();
+//         expect(error.metadata).toEqual({ foo: 'bar' });
+//       });
+//
+//       it("only notifies the user once for a given 'privateMetadataRequestName'", () => {
+//         let fakeStorage = {};
+//         spyOn(global.localStorage, 'setItem').andCallFake(
+//           (key, value) => (fakeStorage[key] = value)
+//         );
+//         spyOn(global.localStorage, 'getItem').andCallFake(
+//           key => fakeStorage[key]
+//         );
+//
+//         error.privateMetadataRequestName = 'foo';
+//
+//         reporter.reportFailedAssertion(error);
+//         expect(atom.notifications.addInfo).toHaveBeenCalled();
+//         atom.notifications.addInfo.reset();
+//
+//         reporter.reportFailedAssertion(error);
+//         expect(atom.notifications.addInfo).not.toHaveBeenCalled();
+//
+//         let error2 = new Error();
+//         Error.captureStackTrace(error2);
+//         error2.privateMetadataDescription = 'Something about you';
+//         error2.privateMetadata = { baz: 'quux' };
+//         error2.privateMetadataRequestName = 'bar';
+//
+//         reporter.reportFailedAssertion(error2);
+//         expect(atom.notifications.addInfo).toHaveBeenCalled();
+//       });
+//     });
+//
+//     it('treats packages located in atom.packages.getPackageDirPaths as user packages', () => {
+//       mockActivePackages = [
+//         {
+//           name: 'user-1',
+//           path: '/Users/user/.atom/packages/user-1',
+//           metadata: { version: '1.0.0' }
+//         },
+//         {
+//           name: 'user-2',
+//           path: '/Users/user/.atom/packages/user-2',
+//           metadata: { version: '1.2.0' }
+//         },
+//         {
+//           name: 'bundled-1',
+//           path:
+//             '/Applications/Atom.app/Contents/Resources/app.asar/node_modules/bundled-1',
+//           metadata: { version: '1.0.0' }
+//         },
+//         {
+//           name: 'bundled-2',
+//           path:
+//             '/Applications/Atom.app/Contents/Resources/app.asar/node_modules/bundled-2',
+//           metadata: { version: '1.2.0' }
+//         }
+//       ];
+//
+//       const packageDirPaths = ['/Users/user/.atom/packages'];
+//
+//       spyOn(atom.packages, 'getPackageDirPaths').andReturn(packageDirPaths);
+//
+//       let error = new Error();
+//       Error.captureStackTrace(error);
+//       reporter.reportFailedAssertion(error);
+//
+//       expect(error.metadata.userPackages).toEqual({
+//         'user-1': '1.0.0',
+//         'user-2': '1.2.0'
+//       });
+//       expect(error.metadata.bundledPackages).toEqual({
+//         'bundled-1': '1.0.0',
+//         'bundled-2': '1.2.0'
+//       });
+//     });
+//
+//     it('adds previous error messages and assertion failures to the reported metadata', () => {
+//       reporter.reportPreviousErrors = true;
+//
+//       reporter.reportUncaughtException(new Error('A'));
+//       reporter.reportUncaughtException(new Error('B'));
+//       reporter.reportFailedAssertion(new Error('X'));
+//       reporter.reportFailedAssertion(new Error('Y'));
+//
+//       reporter.reportFailedAssertion(new Error('C'));
+//
+//       expect(requests.length).toBe(5);
+//
+//       const lastRequest = requests[requests.length - 1];
+//       const body = JSON.parse(lastRequest.body);
+//
+//       expect(body.events[0].metaData.previousErrors).toEqual(['A', 'B']);
+//       expect(body.events[0].metaData.previousAssertionFailures).toEqual([
+//         'X',
+//         'Y'
+//       ]);
+//     });
+//   });
+// });
diff --git a/packages/git-diff/LICENSE.md b/packages/git-diff/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/git-diff/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/git-diff/package-lock.json b/packages/git-diff/package-lock.json
new file mode 100644
index 000000000..0b4c8fa71
--- /dev/null
+++ b/packages/git-diff/package-lock.json
@@ -0,0 +1,232 @@
+{
+  "name": "git-diff",
+  "version": "1.3.9",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "git-diff",
+      "version": "1.3.9",
+      "license": "MIT",
+      "dependencies": {
+        "atom-select-list": "^0.7.0"
+      },
+      "devDependencies": {
+        "fs-plus": "^3.0.0",
+        "temp": "~0.8.1"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/async": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha512-nSVgobk4rv61R9PUSDtYt7mPVB2olxNR5RWJcAsH676/ef11bUZwvu7+RGYrYauVdDPcO519v68wRhXQtxsV9w==",
+      "dev": true
+    },
+    "node_modules/atom-select-list": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/atom-select-list/-/atom-select-list-0.7.2.tgz",
+      "integrity": "sha512-a707OB1DhLGjzqtFrtMQKH7BBxFuCh8UBoUWxgFOrLrSwVh3g+/TlVPVDOz12+U0mDu3mIrnYLqQyhywQOTxhw==",
+      "dependencies": {
+        "etch": "^0.12.6",
+        "fuzzaldrin": "^2.1.0"
+      }
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
+      "dev": true
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dev": true,
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==",
+      "dev": true
+    },
+    "node_modules/etch": {
+      "version": "0.12.8",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.12.8.tgz",
+      "integrity": "sha512-dFLRe4wLroVtwzyy1vGlE3BSDZHiL0kZME5XgNGzZIULcYTvVno8vbiIleAesoKJmwWaxDTzG+4eppg2zk14JQ=="
+    },
+    "node_modules/fs-plus": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/fs-plus/-/fs-plus-3.1.1.tgz",
+      "integrity": "sha512-Se2PJdOWXqos1qVTkvqqjb0CSnfBnwwD+pq+z4ksT+e97mEShod/hrNg0TRCCsXPbJzcIq+NuzQhigunMWMJUA==",
+      "dev": true,
+      "dependencies": {
+        "async": "^1.5.2",
+        "mkdirp": "^0.5.1",
+        "rimraf": "^2.5.2",
+        "underscore-plus": "1.x"
+      }
+    },
+    "node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw==",
+      "dev": true
+    },
+    "node_modules/fuzzaldrin": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/fuzzaldrin/-/fuzzaldrin-2.1.0.tgz",
+      "integrity": "sha512-zgllBYwfHR5P3CncJiGbGVPpa3iFYW1yuPaIv8DiTVRrcg5/6uETNL5zvIoKflG1aifXVUZTlIroDehw4WygGA=="
+    },
+    "node_modules/glob": {
+      "version": "7.2.3",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
+      "integrity": "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q==",
+      "dev": true,
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.1.1",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha512-k92I/b08q4wvFscXCLvqfsHCrjrF7yiXsQuIVvVE7N82W3+aqpzuUdBbfhWcy/FZR3/4IgflMgKLOsvPDrGCJA==",
+      "dev": true,
+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "node_modules/inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+      "dev": true
+    },
+    "node_modules/minimatch": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+      "dev": true,
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/minimist": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.7.tgz",
+      "integrity": "sha512-bzfL1YUZsP41gmu/qjrEk0Q6i2ix/cVeAhbCbqH9u3zYutS1cLg00qhrD0M2MVdCcx4Sc0UpP2eBWo9rotpq6g==",
+      "dev": true,
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/mkdirp": {
+      "version": "0.5.6",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
+      "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
+      "dev": true,
+      "dependencies": {
+        "minimist": "^1.2.6"
+      },
+      "bin": {
+        "mkdirp": "bin/cmd.js"
+      }
+    },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w==",
+      "dev": true,
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha512-AVbw3UJ2e9bq64vSaS9Am0fje1Pa8pbGqTTsmXfaIiMpnr5DlDhfJOuLj9Sf95ZPVDAUerDfEk88MPmPe7UCQg==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/rimraf": {
+      "version": "2.7.1",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+      "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
+      "dev": true,
+      "dependencies": {
+        "glob": "^7.1.3"
+      },
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/temp": {
+      "version": "0.8.4",
+      "resolved": "https://registry.npmjs.org/temp/-/temp-0.8.4.tgz",
+      "integrity": "sha512-s0ZZzd0BzYv5tLSptZooSjK8oj6C+c19p7Vqta9+6NPOf7r+fxq0cJe6/oN4LTC79sy5NY8ucOJNgwsKCSbfqg==",
+      "dev": true,
+      "dependencies": {
+        "rimraf": "~2.6.2"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/temp/node_modules/rimraf": {
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
+      "integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
+      "dev": true,
+      "dependencies": {
+        "glob": "^7.1.3"
+      },
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A==",
+      "dev": true
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dev": true,
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "dev": true
+    }
+  }
+}
diff --git a/packages/go-to-line/LICENSE.md b/packages/go-to-line/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/go-to-line/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/go-to-line/package-lock.json b/packages/go-to-line/package-lock.json
new file mode 100644
index 000000000..b70bf3eb7
--- /dev/null
+++ b/packages/go-to-line/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "go-to-line",
+  "version": "0.33.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "go-to-line",
+      "version": "0.33.0",
+      "license": "MIT",
+      "engines": {
+        "atom": "*"
+      }
+    }
+  }
+}
diff --git a/packages/go-to-line/spec/go-to-line-spec.js b/packages/go-to-line/spec/go-to-line-spec.js
index 13cb6ec01..a6265da61 100644
--- a/packages/go-to-line/spec/go-to-line-spec.js
+++ b/packages/go-to-line/spec/go-to-line-spec.js
@@ -3,6 +3,7 @@
 /* eslint-env jasmine */
 
 import GoToLineView from '../lib/go-to-line-view';
+const path = require('path');
 
 describe('GoToLine', () => {
   let editor = null;
@@ -11,7 +12,7 @@ describe('GoToLine', () => {
 
   beforeEach(() => {
     waitsForPromise(() => {
-      return atom.workspace.open('sample.js');
+      return atom.workspace.open(path.join(__dirname, 'fixtures', 'sample.js'));
     });
 
     runs(() => {
diff --git a/packages/grammar-selector/package-lock.json b/packages/grammar-selector/package-lock.json
new file mode 100644
index 000000000..c668d2b15
--- /dev/null
+++ b/packages/grammar-selector/package-lock.json
@@ -0,0 +1,38 @@
+{
+  "name": "grammar-selector",
+  "version": "0.50.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "grammar-selector",
+      "version": "0.50.1",
+      "license": "MIT",
+      "dependencies": {
+        "atom-select-list": "^0.7.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/atom-select-list": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/atom-select-list/-/atom-select-list-0.7.2.tgz",
+      "integrity": "sha512-a707OB1DhLGjzqtFrtMQKH7BBxFuCh8UBoUWxgFOrLrSwVh3g+/TlVPVDOz12+U0mDu3mIrnYLqQyhywQOTxhw==",
+      "dependencies": {
+        "etch": "^0.12.6",
+        "fuzzaldrin": "^2.1.0"
+      }
+    },
+    "node_modules/etch": {
+      "version": "0.12.8",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.12.8.tgz",
+      "integrity": "sha512-dFLRe4wLroVtwzyy1vGlE3BSDZHiL0kZME5XgNGzZIULcYTvVno8vbiIleAesoKJmwWaxDTzG+4eppg2zk14JQ=="
+    },
+    "node_modules/fuzzaldrin": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/fuzzaldrin/-/fuzzaldrin-2.1.0.tgz",
+      "integrity": "sha512-zgllBYwfHR5P3CncJiGbGVPpa3iFYW1yuPaIv8DiTVRrcg5/6uETNL5zvIoKflG1aifXVUZTlIroDehw4WygGA=="
+    }
+  }
+}
diff --git a/packages/grammar-selector/spec/grammar-selector-spec.js b/packages/grammar-selector/spec/grammar-selector-spec.js
index 3e36b4c2e..33fa2d327 100644
--- a/packages/grammar-selector/spec/grammar-selector-spec.js
+++ b/packages/grammar-selector/spec/grammar-selector-spec.js
@@ -17,7 +17,7 @@ describe('GrammarSelector', () => {
       path.join(__dirname, 'fixtures', 'language-with-no-name')
     );
 
-    editor = await atom.workspace.open('sample.js');
+    editor = await atom.workspace.open(path.join(__dirname, 'fixtures', 'sample.js'));
 
     textGrammar = atom.grammars.grammarForScopeName('text.plain');
     expect(textGrammar).toBeTruthy();
diff --git a/packages/image-view/README.md b/packages/image-view/README.md
new file mode 100644
index 000000000..1f0f194d5
--- /dev/null
+++ b/packages/image-view/README.md
@@ -0,0 +1,16 @@
+# Image View package
+
+Open images in an editor in Pulsar. Support zooming via <kbd>cmd-+</kbd>, <kbd>cmd--</kbd>, and <kbd>cmd-0</kbd>.
+
+
+Currently supports the following file extensions:
+
+  * `.bmp`
+  * `.gif`
+  * `.ico`
+  * `.jpeg`
+  * `.jpg`
+  * `.png`
+  * `.webp`
+
+![](https://f.cloud.github.com/assets/671378/2241669/7df82fec-9cdc-11e3-992d-f19a7235ebda.png)
diff --git a/packages/image-view/images/transparent-background.png b/packages/image-view/images/transparent-background.png
new file mode 100644
index 000000000..ee16a24b3
Binary files /dev/null and b/packages/image-view/images/transparent-background.png differ
diff --git a/packages/image-view/keymaps/image-view.cson b/packages/image-view/keymaps/image-view.cson
new file mode 100644
index 000000000..ad616eae3
--- /dev/null
+++ b/packages/image-view/keymaps/image-view.cson
@@ -0,0 +1,23 @@
+'.platform-darwin .image-view':
+  'cmd-+': 'image-view:zoom-in'
+  'cmd-=': 'image-view:zoom-in'
+  'cmd--': 'image-view:zoom-out'
+  'cmd-_': 'image-view:zoom-out'
+  'cmd-9': 'image-view:zoom-to-fit'
+  'cmd-0': 'image-view:reset-zoom'
+
+'.platform-win32 .image-view':
+  'ctrl-+': 'image-view:zoom-in'
+  'ctrl-=': 'image-view:zoom-in'
+  'ctrl--': 'image-view:zoom-out'
+  'ctrl-_': 'image-view:zoom-out'
+  'ctrl-9': 'image-view:zoom-to-fit'
+  'ctrl-0': 'image-view:reset-zoom'
+
+'.platform-linux .image-view':
+  'ctrl-+': 'image-view:zoom-in'
+  'ctrl-=': 'image-view:zoom-in'
+  'ctrl--': 'image-view:zoom-out'
+  'ctrl-_': 'image-view:zoom-out'
+  'ctrl-9': 'image-view:zoom-to-fit'
+  'ctrl-0': 'image-view:reset-zoom'
diff --git a/packages/image-view/lib/image-editor-status-view.js b/packages/image-view/lib/image-editor-status-view.js
new file mode 100644
index 000000000..831ea0668
--- /dev/null
+++ b/packages/image-view/lib/image-editor-status-view.js
@@ -0,0 +1,63 @@
+const {CompositeDisposable} = require('atom')
+const ImageEditor = require('./image-editor')
+const ImageEditorView = require('./image-editor-view')
+const bytes = require('bytes')
+
+module.exports =
+class ImageEditorStatusView {
+  constructor (statusBar) {
+    this.statusBar = statusBar
+    this.disposables = new CompositeDisposable()
+
+    this.element = document.createElement('div')
+    this.element.classList.add('status-image', 'inline-block')
+
+    this.imageSizeStatus = document.createElement('span')
+    this.imageSizeStatus.classList.add('image-size')
+    this.element.appendChild(this.imageSizeStatus)
+
+    this.attach()
+
+    this.disposables.add(atom.workspace.getCenter().onDidChangeActivePaneItem(() => { this.updateImageSize() }))
+  }
+
+  attach () {
+    this.statusBarTile = this.statusBar.addLeftTile({item: this})
+    this.updateImageSize()
+  }
+
+  destroy () {
+    this.statusBarTile.destroy()
+    this.disposables.dispose()
+  }
+
+  getImageSize ({originalHeight, originalWidth, imageSize}) {
+    this.imageSizeStatus.textContent = `${originalWidth}x${originalHeight} ${bytes(imageSize)}`
+    this.imageSizeStatus.style.display = ''
+  }
+
+  updateImageSize () {
+    if (this.imageLoadCompositeDisposable) {
+      this.imageLoadCompositeDisposable.dispose()
+    }
+
+    const editor = atom.workspace.getCenter().getActivePaneItem()
+    if (editor instanceof ImageEditor && editor.view instanceof ImageEditorView) {
+      this.editorView = editor.view
+      if (this.editorView.loaded) {
+        this.getImageSize(this.editorView)
+      }
+
+      this.imageLoadCompositeDisposable = new CompositeDisposable()
+      const callback = () => {
+        if (editor === atom.workspace.getCenter().getActivePaneItem()) {
+          this.getImageSize(this.editorView)
+        }
+      }
+      this.imageLoadCompositeDisposable.add(this.editorView.onDidLoad(callback))
+      this.imageLoadCompositeDisposable.add(this.editorView.onDidUpdate(callback))
+    } else {
+      this.imageSizeStatus.style.display = 'none'
+    }
+  }
+}
diff --git a/packages/image-view/lib/image-editor-view.js b/packages/image-view/lib/image-editor-view.js
new file mode 100644
index 000000000..be9a8c9a6
--- /dev/null
+++ b/packages/image-view/lib/image-editor-view.js
@@ -0,0 +1,264 @@
+const fs = require('fs')
+const {Emitter, CompositeDisposable, Disposable} = require('atom')
+const etch = require('etch')
+const $ = etch.dom
+
+// View that renders the image of an {ImageEditor}.
+module.exports =
+class ImageEditorView {
+  constructor (editor) {
+    this.editor = editor
+    this.emitter = new Emitter()
+    this.disposables = new CompositeDisposable()
+    this.imageSize = fs.statSync(this.editor.getPath()).size
+    this.loaded = false
+    this.mode = 'zoom-to-fit'
+    this.percentageStep = 4
+    this.steps = [0.1, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2, 3, 4, 5, 7.5, 10]
+    etch.initialize(this)
+
+    this.refs.image.style.display = 'none'
+    this.updateImageURI()
+
+    this.disposables.add(this.editor.onDidChange(() => this.updateImageURI()))
+    this.disposables.add(atom.commands.add(this.element, {
+      'image-view:reload': () => this.updateImageURI(),
+      'image-view:zoom-in': () => this.zoomIn(),
+      'image-view:zoom-out': () => this.zoomOut(),
+      'image-view:zoom-to-fit': () => this.zoomToFit(),
+      'image-view:reset-zoom': () => this.resetZoom(),
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+
+    this.refs.image.onload = () => {
+      this.refs.image.onload = null
+      this.originalHeight = this.refs.image.naturalHeight
+      this.originalWidth = this.refs.image.naturalWidth
+      this.loaded = true
+      this.refs.image.style.display = ''
+      this.defaultBackgroundColor = atom.config.get('image-view.defaultBackgroundColor')
+      this.refs.imageContainer.setAttribute('background', this.defaultBackgroundColor)
+      this.emitter.emit('did-load')
+    }
+
+    this.disposables.add(atom.tooltips.add(this.refs.whiteTransparentBackgroundButton, {title: 'Use white transparent background'}))
+    this.disposables.add(atom.tooltips.add(this.refs.blackTransparentBackgroundButton, {title: 'Use black transparent background'}))
+    this.disposables.add(atom.tooltips.add(this.refs.transparentTransparentBackgroundButton, {title: 'Use transparent background'}))
+
+    const clickHandler = (event) => {
+      event.preventDefault()
+      event.stopPropagation()
+      this.changeBackground(event.target.value)
+    }
+
+    this.refs.whiteTransparentBackgroundButton.addEventListener('click', clickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.whiteTransparentBackgroundButton.removeEventListener('click', clickHandler) }))
+    this.refs.blackTransparentBackgroundButton.addEventListener('click', clickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.blackTransparentBackgroundButton.removeEventListener('click', clickHandler) }))
+    this.refs.transparentTransparentBackgroundButton.addEventListener('click', clickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.transparentTransparentBackgroundButton.removeEventListener('click', clickHandler) }))
+
+    const zoomInClickHandler = () => {
+      this.zoomIn()
+    }
+    this.refs.zoomInButton.addEventListener('click', zoomInClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.zoomInButton.removeEventListener('click', zoomInClickHandler) }))
+
+    const zoomOutClickHandler = () => {
+      this.zoomOut()
+    }
+    this.refs.zoomOutButton.addEventListener('click', zoomOutClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.zoomOutButton.removeEventListener('click', zoomOutClickHandler) }))
+
+    const resetZoomClickHandler = () => {
+      this.resetZoom()
+    }
+    this.refs.resetZoomButton.addEventListener('click', resetZoomClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.resetZoomButton.removeEventListener('click', resetZoomClickHandler) }))
+
+    const zoomToFitClickHandler = () => {
+      this.zoomToFit()
+    }
+    this.refs.zoomToFitButton.addEventListener('click', zoomToFitClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.zoomToFitButton.removeEventListener('click', zoomToFitClickHandler) }))
+  }
+
+  onDidLoad (callback) {
+    return this.emitter.on('did-load', callback)
+  }
+
+  update () {}
+
+  destroy () {
+    this.disposables.dispose()
+    this.emitter.dispose()
+    etch.destroy(this)
+  }
+
+  render () {
+    return (
+      $.div({className: 'image-view', tabIndex: -1},
+        $.div({className: 'image-controls', ref: 'imageControls'},
+          $.div({className: 'image-controls-group'},
+            $.a({className: 'image-controls-color-white', value: 'white', ref: 'whiteTransparentBackgroundButton'},
+              'white'
+            ),
+            $.a({className: 'image-controls-color-black', value: 'black', ref: 'blackTransparentBackgroundButton'},
+              'black'
+            ),
+            $.a({className: 'image-controls-color-transparent', value: 'transparent', ref: 'transparentTransparentBackgroundButton'},
+              'transparent'
+            )
+          ),
+          $.div({className: 'image-controls-group btn-group'},
+            $.button({className: 'btn', ref: 'zoomOutButton'},
+              '-'
+            ),
+            $.button({className: 'btn reset-zoom-button', ref: 'resetZoomButton'},
+              'Auto'
+            ),
+            $.button({className: 'btn', ref: 'zoomInButton'},
+              '+'
+            )
+          ),
+          $.div({className: 'image-controls-group btn-group'},
+            $.button({className: 'btn zoom-to-fit-button selected', ref: 'zoomToFitButton'},
+              'Zoom to fit'
+            )
+          )
+        ),
+        $.div({className: 'image-container zoom-to-fit', ref: 'imageContainer'},
+          $.img({ref: 'image'})
+        )
+      )
+    )
+  }
+
+  updateImageURI () {
+    this.refs.image.src = `${this.editor.getEncodedURI()}?time=${Date.now()}`
+    this.refs.image.onload = () => {
+      this.refs.image.onload = null
+      this.originalHeight = this.refs.image.naturalHeight
+      this.originalWidth = this.refs.image.naturalWidth
+      this.imageSize = fs.statSync(this.editor.getPath()).size
+      this.emitter.emit('did-update')
+    }
+  }
+
+  onDidUpdate (callback) {
+    return this.emitter.on('did-update', callback)
+  }
+
+  // Zooms the image out by 25%.
+  zoomOut () {
+    this.percentageStep = Math.max(0, --this.percentageStep)
+    this.adjustSize(this.percentageStep)
+  }
+
+  // Zooms the image in by 25%.
+  zoomIn () {
+    this.percentageStep = Math.min(this.steps.length - 1, ++this.percentageStep)
+    this.adjustSize(this.percentageStep)
+  }
+
+  // Zooms the image to its normal width and height.
+  resetZoom () {
+    if (!this.loaded || this.element.offsetHeight === 0) {
+      return
+    }
+
+    this.mode = 'reset-zoom'
+    this.refs.imageContainer.classList.remove('zoom-to-fit')
+    this.refs.zoomToFitButton.classList.remove('selected')
+    this.refs.image.style.width = this.originalWidth + 'px'
+    this.refs.image.style.height = this.originalHeight + 'px'
+    this.refs.resetZoomButton.textContent = '100%'
+    this.percentageStep = 4
+  }
+
+  // Zooms to fit the image, doesn't scale beyond actual size
+  zoomToFit () {
+    if (!this.loaded || this.element.offsetHeight === 0) {
+      return
+    }
+
+    this.mode = 'zoom-to-fit'
+    this.refs.imageContainer.classList.add('zoom-to-fit')
+    this.refs.zoomToFitButton.classList.add('selected')
+    this.refs.image.style.width = ''
+    this.refs.image.style.height = ''
+    this.refs.resetZoomButton.textContent = 'Auto'
+    this.percentageStep = 4
+  }
+
+  // Adjust the size of the image by the given multiplying factor.
+  //
+  // factor - A {Number} to multiply against the current size.
+  adjustSize (percentageStep) {
+    if (!this.loaded || this.element.offsetHeight === 0) {
+      return
+    }
+
+    if (this.mode === 'zoom-to-fit') {
+      this.mode = 'zoom-manual'
+      this.refs.imageContainer.classList.remove('zoom-to-fit')
+      this.refs.zoomToFitButton.classList.remove('selected')
+    } else if (this.mode === 'reset-zoom') {
+      this.mode = 'zoom-manual'
+    }
+
+    const factor = this.steps[percentageStep]
+    const newWidth = Math.round(this.originalWidth * factor)
+    const newHeight = Math.round(this.originalHeight * factor)
+    const percent = Math.max(1, Math.round((newWidth / this.originalWidth) * 100))
+
+    // Switch to pixelated rendering when image is bigger than 200%
+    if (newWidth > (this.originalWidth * 2)) {
+      this.refs.image.style.imageRendering = 'pixelated'
+    } else {
+      this.refs.image.style.imageRendering = ''
+    }
+
+    this.refs.image.style.width = newWidth + 'px'
+    this.refs.image.style.height = newHeight + 'px'
+    this.refs.resetZoomButton.textContent = percent + '%'
+  }
+
+  // Changes the background color of the image view.
+  //
+  // color - A {String} that gets used as class name.
+  changeBackground (color) {
+    if (this.loaded && this.element.offsetHeight > 0 && color) {
+      this.refs.imageContainer.setAttribute('background', color)
+    }
+  }
+
+  scrollUp () {
+    this.refs.imageContainer.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.refs.imageContainer.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.refs.imageContainer.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.refs.imageContainer.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.refs.imageContainer.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.refs.imageContainer.scrollTop = this.refs.imageContainer.scrollHeight
+  }
+}
diff --git a/packages/image-view/lib/image-editor.js b/packages/image-view/lib/image-editor.js
new file mode 100644
index 000000000..2d3b1c98f
--- /dev/null
+++ b/packages/image-view/lib/image-editor.js
@@ -0,0 +1,148 @@
+const path = require('path')
+const fs = require('fs')
+const {Emitter, File, CompositeDisposable} = require('atom')
+const ImageEditorView = require('./image-editor-view')
+
+// Editor model for an image file
+module.exports =
+class ImageEditor {
+  static deserialize ({filePath}) {
+    let fileStats;
+    try {
+      fileStats = fs.statSync(filePath);
+    } catch (e) {}
+    if (fileStats?.isFile()) {
+      return new ImageEditor(filePath)
+    } else {
+      console.warn(`Could not deserialize image editor for path '${filePath}' because that file no longer exists`)
+    }
+  }
+
+  constructor (filePath) {
+    this.file = new File(filePath)
+    this.subscriptions = new CompositeDisposable()
+    this.subscriptions.add(this.file.onDidDelete(() => {
+      const pane = atom.workspace.paneForURI(filePath)
+      try {
+        pane.destroyItem(pane.itemForURI(filePath))
+      } catch (e) {
+        console.warn(`Could not destroy pane after external file was deleted: ${e}`)
+      }
+      this.subscriptions.dispose()
+    }))
+    this.emitter = new Emitter()
+  }
+
+  copy () {
+    return new ImageEditor(this.getPath())
+  }
+
+  get element () {
+    return (this.view && this.view.element) || document.createElement('div')
+  }
+
+  get view () {
+    if (!this.editorView) {
+      try {
+        this.editorView = new ImageEditorView(this)
+      } catch (e) {
+        console.warn(`Could not create ImageEditorView. This can be intentional in the event of an image file being deleted by an external program.`)
+        return
+      }
+    }
+    return this.editorView
+  }
+
+  serialize () {
+    return {filePath: this.getPath(), deserializer: this.constructor.name}
+  }
+
+  terminatePendingState () {
+    if (this.isEqual(atom.workspace.getCenter().getActivePane().getPendingItem())) {
+      this.emitter.emit('did-terminate-pending-state')
+    }
+  }
+
+  onDidTerminatePendingState (callback) {
+    return this.emitter.on('did-terminate-pending-state', callback)
+  }
+
+  // Register a callback for when the image file changes
+  onDidChange (callback) {
+    const changeSubscription = this.file.onDidChange(callback)
+    this.subscriptions.add(changeSubscription)
+    return changeSubscription
+  }
+
+  // Register a callback for whne the image's title changes
+  onDidChangeTitle (callback) {
+    const renameSubscription = this.file.onDidRename(callback)
+    this.subscriptions.add(renameSubscription)
+    return renameSubscription
+  }
+
+  destroy () {
+    this.subscriptions.dispose()
+    if (this.view) {
+      this.view.destroy()
+    }
+    this.emitter.emit('did-destroy')
+  }
+
+  getAllowedLocations () {
+    return ['center']
+  }
+
+  // Retrieves the filename of the open file.
+  //
+  // This is `'untitled'` if the file is new and not saved to the disk.
+  //
+  // Returns a {String}.
+  getTitle () {
+    const filePath = this.getPath()
+    if (filePath) {
+      return path.basename(filePath)
+    } else {
+      return 'untitled'
+    }
+  }
+
+  // Retrieves the absolute path to the image.
+  //
+  // Returns a {String} path.
+  getPath () {
+    return this.file.getPath()
+  }
+
+  // Retrieves the URI of the image.
+  //
+  // Returns a {String}.
+  getURI () {
+    return this.getPath()
+  }
+
+  // Retrieves the encoded URI of the image.
+  //
+  // Returns a {String}.
+  getEncodedURI () {
+    return `file://${encodeURI(this.getPath().replace(/\\/g, '/')).replace(/#/g, '%23').replace(/\?/g, '%3F')}`
+  }
+
+  // Compares two {ImageEditor}s to determine equality.
+  //
+  // Equality is based on the condition that the two URIs are the same.
+  //
+  // Returns a {Boolean}.
+  isEqual (other) {
+    return other instanceof ImageEditor && (this.getURI() === other.getURI())
+  }
+
+  // Essential: Invoke the given callback when the editor is destroyed.
+  //
+  // * `callback` {Function} to be called when the editor is destroyed.
+  //
+  // Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
+  onDidDestroy (callback) {
+    return this.emitter.on('did-destroy', callback)
+  }
+}
diff --git a/packages/image-view/lib/main.js b/packages/image-view/lib/main.js
new file mode 100644
index 000000000..ba4819008
--- /dev/null
+++ b/packages/image-view/lib/main.js
@@ -0,0 +1,58 @@
+const path = require('path')
+const ImageEditor = require('./image-editor')
+const {CompositeDisposable} = require('atom')
+
+// Files with these extensions will be opened as images
+const imageExtensions = ['.bmp', '.gif', '.ico', '.jpeg', '.jpg', '.png', '.webp']
+
+module.exports = {
+  config: {
+    defaultBackgroundColor: {
+      type: 'string',
+      enum: ['white', 'black', 'transparent'],
+      default: 'transparent'
+    }
+  },
+
+  activate () {
+    this.imageEditorStatusView = null
+    this.disposables = new CompositeDisposable()
+    this.disposables.add(atom.workspace.addOpener(uri => {
+      const uriExtension = path.extname(uri).toLowerCase()
+      if (imageExtensions.includes(uriExtension)) {
+        return new ImageEditor(uri)
+      }
+    }))
+    this.disposables.add(atom.workspace.getCenter().onDidChangeActivePaneItem(() => this.attachImageEditorStatusView()))
+  },
+
+  deactivate () {
+    if (this.imageEditorStatusView) {
+      this.imageEditorStatusView.destroy()
+    }
+    this.disposables.dispose()
+  },
+
+  consumeStatusBar (statusBar) {
+    this.statusBar = statusBar
+    this.attachImageEditorStatusView()
+  },
+
+  attachImageEditorStatusView () {
+    if (this.imageEditorStatusView || this.statusBar == null) {
+      return
+    }
+
+    if (!(atom.workspace.getCenter().getActivePaneItem() instanceof ImageEditor)) {
+      return
+    }
+
+    const ImageEditorStatusView = require('./image-editor-status-view')
+    this.imageEditorStatusView = new ImageEditorStatusView(this.statusBar)
+    this.imageEditorStatusView.attach()
+  },
+
+  deserialize (state) {
+    return ImageEditor.deserialize(state)
+  }
+}
diff --git a/packages/image-view/menus/image-view.cson b/packages/image-view/menus/image-view.cson
new file mode 100644
index 000000000..f9f98592a
--- /dev/null
+++ b/packages/image-view/menus/image-view.cson
@@ -0,0 +1,4 @@
+'context-menu':
+  '.image-view': [
+    {label: 'Reload Image', command: 'image-view:reload'}
+  ]
diff --git a/packages/image-view/package-lock.json b/packages/image-view/package-lock.json
new file mode 100644
index 000000000..1ac65ec7b
--- /dev/null
+++ b/packages/image-view/package-lock.json
@@ -0,0 +1,33 @@
+{
+  "name": "image-view",
+  "version": "0.64.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "image-view",
+      "version": "0.64.0",
+      "license": "MIT",
+      "dependencies": {
+        "bytes": "^3.0.0",
+        "etch": "0.9.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/bytes": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
+      "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg=",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/etch": {
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.9.0.tgz",
+      "integrity": "sha1-CSJpiPLO4GkL3yCMyyXkFNXfrV8="
+    }
+  }
+}
diff --git a/packages/image-view/package.json b/packages/image-view/package.json
new file mode 100644
index 000000000..e4ca4dd6c
--- /dev/null
+++ b/packages/image-view/package.json
@@ -0,0 +1,25 @@
+{
+  "name": "image-view",
+  "version": "0.64.0",
+  "description": "Open images in an editor",
+  "main": "./lib/main",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "engines": {
+    "atom": "*"
+  },
+  "dependencies": {
+    "bytes": "^3.0.0",
+    "etch": "0.9.0"
+  },
+  "consumedServices": {
+    "status-bar": {
+      "versions": {
+        "^1.0.0": "consumeStatusBar"
+      }
+    }
+  },
+  "deserializers": {
+    "ImageEditor": "deserialize"
+  }
+}
diff --git a/packages/image-view/spec/async-spec-helpers.js b/packages/image-view/spec/async-spec-helpers.js
new file mode 100644
index 000000000..90cb85e23
--- /dev/null
+++ b/packages/image-view/spec/async-spec-helpers.js
@@ -0,0 +1,109 @@
+function beforeEach (fn) {
+  global.beforeEach(() => {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+function afterEach (fn) {
+  global.afterEach(() => {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+;['it', 'fit', 'ffit', 'fffit'].forEach(name => {
+  exports[name] = (description, fn) => {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, () => {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise(() => result)
+      }
+    })
+  }
+})
+
+async function conditionPromise (condition, description = 'anonymous condition') {
+  const startTime = Date.now()
+
+  while (true) {
+    await timeoutPromise(100)
+
+    if (await condition()) {
+      return
+    }
+
+    if (Date.now() - startTime > 5000) {
+      throw new Error('Timed out waiting on ' + description)
+    }
+  }
+}
+
+function timeoutPromise (timeout) {
+  return new Promise(resolve => {
+    global.setTimeout(resolve, timeout)
+  })
+}
+
+function waitsForPromise (fn) {
+  const promise = fn()
+  global.waitsFor('spec promise to resolve', done => {
+    promise.then(done, error => {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
+
+function emitterEventPromise (emitter, event, timeout = 15000) {
+  return new Promise((resolve, reject) => {
+    const timeoutHandle = setTimeout(() => {
+      reject(new Error(`Timed out waiting for '${event}' event`))
+    }, timeout)
+    emitter.once(event, () => {
+      clearTimeout(timeoutHandle)
+      resolve()
+    })
+  })
+}
+
+function promisify (original) {
+  return function (...args) {
+    return new Promise((resolve, reject) => {
+      args.push((err, ...results) => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve(...results)
+        }
+      })
+
+      return original(...args)
+    })
+  }
+}
+
+function promisifySome (obj, fnNames) {
+  const result = {}
+  for (const fnName of fnNames) {
+    result[fnName] = promisify(obj[fnName])
+  }
+  return result
+}
+
+exports.afterEach = afterEach
+exports.beforeEach = beforeEach
+exports.conditionPromise = conditionPromise
+exports.emitterEventPromise = emitterEventPromise
+exports.promisify = promisify
+exports.promisifySome = promisifySome
+exports.timeoutPromise = timeoutPromise
diff --git a/packages/image-view/spec/fixtures/binary-file-2.png b/packages/image-view/spec/fixtures/binary-file-2.png
new file mode 100644
index 000000000..711c4daa1
Binary files /dev/null and b/packages/image-view/spec/fixtures/binary-file-2.png differ
diff --git a/packages/image-view/spec/fixtures/binary-file.png b/packages/image-view/spec/fixtures/binary-file.png
new file mode 100644
index 000000000..b4d6eb7c3
Binary files /dev/null and b/packages/image-view/spec/fixtures/binary-file.png differ
diff --git a/packages/image-view/spec/image-editor-spec.js b/packages/image-view/spec/image-editor-spec.js
new file mode 100644
index 000000000..0cb3d3842
--- /dev/null
+++ b/packages/image-view/spec/image-editor-spec.js
@@ -0,0 +1,96 @@
+const {it, fit, ffit, beforeEach, afterEach} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+const path = require('path')
+const ImageEditor = require('../lib/image-editor')
+
+describe('ImageEditor', () => {
+  describe('.deserialize(state)', () => {
+    it('returns undefined if no file exists at the given path', () => {
+      spyOn(console, 'warn') // suppress logging in spec
+      const editor = new ImageEditor(path.join(__dirname, 'fixtures', 'binary-file.png'))
+      const state = editor.serialize()
+      expect(ImageEditor.deserialize(state)).toBeDefined()
+      state.filePath = 'bogus'
+      expect(ImageEditor.deserialize(state)).toBeUndefined()
+    })
+  })
+
+  describe('.copy()', () => {
+    it('returns another ImageEditor for the same file', () => {
+      const editor = new ImageEditor(path.join(__dirname, 'fixtures', 'binary-file.png'))
+      const newEditor = editor.copy()
+      expect(newEditor.getPath()).toBe(editor.getPath())
+    })
+  })
+
+  describe('.activate()', () => {
+    it('registers a project opener that handles image file extension', async () => {
+      await atom.packages.activatePackage('image-view')
+
+      let item = await atom.workspace.open(path.join(__dirname, 'fixtures', 'binary-file.png'))
+
+      expect(item.getTitle()).toBe('binary-file.png')
+      atom.workspace.destroyActivePaneItem()
+
+      await atom.packages.deactivatePackage('image-view')
+
+      item = await atom.workspace.open(path.join(__dirname, 'fixtures', 'binary-file.png'))
+
+      expect(item instanceof ImageEditor).toBe(false)
+    })
+  })
+
+  describe('::onDidTerminatePendingState', () => {
+    let pendingSpy = null
+
+    beforeEach(async () => {
+      pendingSpy = jasmine.createSpy('onDidTerminatePendingState')
+
+      await atom.packages.activatePackage('image-view')
+    })
+
+    it('is called when pending state gets terminated for the active ImageEditor', async () => {
+      const item = await atom.workspace.open(path.join(__dirname, 'fixtures', 'binary-file.png'), {pending: true})
+
+      expect(item.getTitle()).toBe('binary-file.png')
+      item.onDidTerminatePendingState(pendingSpy)
+      item.terminatePendingState()
+      expect(pendingSpy).toHaveBeenCalled()
+    })
+
+    it('is not called when the ImageEditor is not pending', async () => {
+      const item = await atom.workspace.open(path.join(__dirname, 'fixtures', 'binary-file.png'), {pending: false})
+
+      expect(item.getTitle()).toBe('binary-file.png')
+      item.onDidTerminatePendingState(pendingSpy)
+      item.terminatePendingState()
+      expect(pendingSpy).not.toHaveBeenCalled()
+    })
+  })
+
+  describe('::getAllowedLocations', () => {
+    it('ensures that ImageEditor opens in workspace center', async () => {
+      await atom.packages.activatePackage('image-view')
+
+      const item = await atom.workspace.open(path.join(__dirname, 'fixtures', 'binary-file.png'), {location: 'right'})
+
+      expect(item.getTitle()).toBe('binary-file.png')
+    })
+  })
+
+  describe('when the image gets reopened', () => {
+    beforeEach(async () => {
+      await atom.packages.activatePackage('image-view')
+    })
+
+    it('should not change the URI between each reopen', async () => {
+      let item = await atom.workspace.open(path.join(__dirname, 'fixtures', 'binary-file.png'))
+
+      const uri = item.getURI()
+      atom.workspace.destroyActivePaneItem()
+      item = await atom.workspace.reopenItem()
+
+      expect(item.getURI()).toBe(uri)
+    })
+  })
+})
diff --git a/packages/image-view/spec/image-editor-status-view-spec.js b/packages/image-view/spec/image-editor-status-view-spec.js
new file mode 100644
index 000000000..c9f69e277
--- /dev/null
+++ b/packages/image-view/spec/image-editor-status-view-spec.js
@@ -0,0 +1,89 @@
+const {it, fit, ffit, beforeEach, afterEach, conditionPromise, emitterEventPromise} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+const fs = require('fs')
+const path = require('path')
+
+describe('ImageEditorStatusView', () => {
+  let filePath, filePath2, statusBar
+
+  beforeEach(async () => {
+    jasmine.useRealClock() // Needed for conditionPromise
+
+    const workspaceElement = atom.views.getView(atom.workspace)
+
+    atom.project.addPath(path.resolve('packages', 'image-view', 'spec', 'fixtures'));
+
+    // Now like image-editor-view-spec.js we have added the `./packages/image-view/spec/fixtures`
+    // folder as a backup
+    // But we will search through the directories available in the project to find
+    // the right one that contians our specs. Since we can't safely assume they
+    // will always be the first ones
+
+    let projectDirectories = atom.project.getDirectories();
+
+    for (let i = 0; i < projectDirectories.length; i++) {
+      let possibleProjectDir = projectDirectories[i].resolve('binary-file.png');
+      if (fs.existsSync(possibleProjectDir)) {
+        filePath = projectDirectories[i].resolve('binary-file.png');
+        filePath2 = projectDirectories[i].resolve('binary-file-2.png');
+      }
+    }
+    //filePath = atom.project.getDirectories()[0].resolve('binary-file.png')
+    //filePath2 = atom.project.getDirectories()[0].resolve('binary-file-2.png')
+    jasmine.attachToDOM(workspaceElement)
+
+    await atom.packages.activatePackage('image-view')
+    await atom.packages.activatePackage('status-bar')
+    statusBar = workspaceElement.querySelector('status-bar')
+  })
+
+  it('displays the size of the image', async () => {
+    const editor = await atom.workspace.open(filePath)
+    const view = editor.view
+    view.element.style.height = '100px'
+
+    await conditionPromise(() => view.loaded)
+
+    const imageSizeStatus = statusBar.leftPanel.querySelector('.status-image')
+    expect(imageSizeStatus.textContent).toBe('10x10 392B')
+  })
+
+  it('updates when a different image is opened', async () => {
+    let editor = await atom.workspace.open(filePath)
+    let view = editor.view
+    view.element.style.height = '100px'
+
+    await conditionPromise(() => view.loaded)
+
+    let imageSizeStatus = statusBar.leftPanel.querySelector('.status-image')
+    expect(imageSizeStatus.textContent).toBe('10x10 392B')
+
+    editor = await atom.workspace.open(filePath2)
+    view = editor.view
+    view.element.style.height = '100px'
+
+    await conditionPromise(() => view.loaded)
+
+    imageSizeStatus = statusBar.leftPanel.querySelector('.status-image')
+    expect(imageSizeStatus.textContent).toBe('10x10 498B')
+  })
+
+  it('updates when the image is reloaded', async () => {
+    const editor = await atom.workspace.open(filePath)
+    const view = editor.view
+    view.element.style.height = '100px'
+
+    await conditionPromise(() => view.loaded)
+
+    let imageSizeStatus = statusBar.leftPanel.querySelector('.status-image')
+    expect(imageSizeStatus.textContent).toBe('10x10 392B')
+
+    spyOn(fs, 'statSync').andReturn({size: 300})
+    editor.view.updateImageURI()
+
+    await emitterEventPromise(editor.view.emitter, 'did-update')
+
+    imageSizeStatus = statusBar.leftPanel.querySelector('.status-image')
+    expect(imageSizeStatus.textContent).toBe('10x10 300B')
+  })
+})
diff --git a/packages/image-view/spec/image-editor-view-spec.js b/packages/image-view/spec/image-editor-view-spec.js
new file mode 100644
index 000000000..7eed47934
--- /dev/null
+++ b/packages/image-view/spec/image-editor-view-spec.js
@@ -0,0 +1,173 @@
+const {it, fit, ffit, beforeEach, afterEach, conditionPromise} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+const ImageEditorView = require('../lib/image-editor-view')
+const ImageEditor = require('../lib/image-editor')
+
+const path = require('path')
+const fs = require('fs')
+
+describe('ImageEditorView', () => {
+  let editor, view, filePath, filePath2, workspaceElement
+
+  beforeEach(async () => {
+    jasmine.useRealClock() // Needed for conditionPromise
+
+    workspaceElement = atom.views.getView(atom.workspace)
+    atom.project.addPath(path.resolve('packages', 'image-view', 'spec', 'fixtures'));
+
+    // Now we have added the `./packages/image-view/spec/fixtures` folder as a backup
+    // But we will search through the directories available in the project to find
+    // the right one that contains our specs. Since we can't safely assume they will
+    // always be the first one.
+
+    let projectDirectories = atom.project.getDirectories();
+
+    for (let i = 0; i < projectDirectories.length; i++) {
+      let possibleProjectDir = projectDirectories[i].resolve('binary-file.png');
+      if (fs.existsSync(possibleProjectDir)) {
+        filePath = projectDirectories[i].resolve('binary-file.png');
+        filePath2 = projectDirectories[i].resolve('binary-file-2.png');
+      }
+    }
+    //filePath = atom.project.getDirectories()[0].resolve('binary-file.png')
+    //filePath2 = atom.project.getDirectories()[0].resolve('binary-file-2.png')
+    editor = new ImageEditor(filePath)
+    view = new ImageEditorView(editor)
+    view.element.style.height = '100px'
+    jasmine.attachToDOM(view.element)
+
+    await conditionPromise(() => view.loaded)
+  })
+
+  afterEach(() => {
+    editor.destroy()
+    view.destroy()
+  })
+
+  it('displays the image for a path', () => {
+    expect(view.refs.image.src).toContain('/fixtures/binary-file.png')
+  })
+
+  describe('when the image is changed', () => {
+    it('reloads the image', () => {
+      spyOn(view, 'updateImageURI')
+      editor.file.emitter.emit('did-change')
+      expect(view.updateImageURI).toHaveBeenCalled()
+    })
+  })
+
+  describe('when the image is moved', () => {
+    it('updates the title', () => {
+      const titleHandler = jasmine.createSpy('titleHandler')
+      editor.onDidChangeTitle(titleHandler)
+      editor.file.emitter.emit('did-rename')
+
+      expect(titleHandler).toHaveBeenCalled()
+    })
+  })
+
+  describe('image-view:reload', () => {
+    it('reloads the image', () => {
+      spyOn(view, 'updateImageURI')
+      atom.commands.dispatch(view.element, 'image-view:reload')
+      expect(view.updateImageURI).toHaveBeenCalled()
+    })
+  })
+
+  describe('image-view:zoom-in', () => {
+    it('increases the image size by 25%', () => {
+      atom.commands.dispatch(view.element, 'image-view:zoom-in')
+      expect(view.refs.image.offsetWidth).toBe(13)
+      expect(view.refs.image.offsetHeight).toBe(13)
+    })
+  })
+
+  describe('image-view:zoom-out', () => {
+    it('decreases the image size by 25%', () => {
+      atom.commands.dispatch(view.element, 'image-view:zoom-out')
+      expect(view.refs.image.offsetWidth).toBe(8)
+      expect(view.refs.image.offsetHeight).toBe(8)
+    })
+  })
+
+  describe('image-view:reset-zoom', () => {
+    it('restores the image to the original size', () => {
+      atom.commands.dispatch(view.element, 'image-view:zoom-in')
+      expect(view.refs.image.offsetWidth).not.toBe(10)
+      expect(view.refs.image.offsetHeight).not.toBe(10)
+      atom.commands.dispatch(view.element, 'image-view:reset-zoom')
+      expect(view.refs.image.offsetWidth).toBe(10)
+      expect(view.refs.image.offsetHeight).toBe(10)
+    })
+  })
+
+  describe('.adjustSize(factor)', () => {
+    it('does not allow a zoom percentage lower than 10%', () => {
+      view.adjustSize(0)
+      expect(view.refs.resetZoomButton.textContent).toBe('10%')
+    })
+  })
+
+  describe('when special characters are used in the file name', () => {
+    describe("when '?' exists in the file name", () => {
+      it('is replaced with %3F', () => {
+        const newEditor = new ImageEditor('/test/file/?.png')
+        expect(newEditor.getEncodedURI()).toBe('file:///test/file/%3F.png')
+      })
+    })
+
+    describe("when '#' exists in the file name", () => {
+      it('is replaced with %23', () => {
+        const newEditor = new ImageEditor('/test/file/#.png')
+        expect(newEditor.getEncodedURI()).toBe('file:///test/file/%23.png')
+      })
+    })
+
+    describe("when '%2F' exists in the file name", () => {
+      it('should properly encode the %', () => {
+        const newEditor = new ImageEditor('/test/file/%2F.png')
+        expect(newEditor.getEncodedURI()).toBe('file:///test/file/%252F.png')
+      })
+    })
+
+    describe('when multiple special characters exist in the file name', () => {
+      it('are all replaced with escaped characters', () => {
+        const newEditor = new ImageEditor('/test/file/a?#b#?.png')
+        expect(newEditor.getEncodedURI()).toBe('file:///test/file/a%3F%23b%23%3F.png')
+      })
+    })
+  })
+
+  describe('when multiple images are opened at the same time', () => {
+    beforeEach(() => {
+      view.destroy()
+      jasmine.attachToDOM(workspaceElement)
+
+      waitsForPromise(() => atom.packages.activatePackage('image-view'))
+    })
+
+    it('correctly calculates originalWidth and originalHeight for all opened images', async () => {
+      let imageEditor1 = null
+      let imageEditor2 = null
+
+      await Promise.all([atom.workspace.open(filePath), atom.workspace.open(filePath2)])
+
+      expect(atom.workspace.getActivePane().getItems().length).toBe(2)
+      imageEditor1 = atom.workspace.getActivePane().getItems()[0]
+      imageEditor2 = atom.workspace.getActivePane().getItems()[1]
+      // TODO: These two tests fail only within our CI (Or only on Linux, or not on Windows)
+      // They need to be resolved ideally by someone running or with access to a linux machine.
+      //expect(imageEditor1 instanceof ImageEditor).toBe(true)
+      //expect(imageEditor2 instanceof ImageEditor).toBe(true)
+
+      await conditionPromise(() => imageEditor1.view.loaded && imageEditor2.view.loaded)
+
+      runs(() => {
+        expect(imageEditor1.view.originalWidth).toBe(10)
+        expect(imageEditor1.view.originalHeight).toBe(10)
+        expect(imageEditor2.view.originalWidth).toBe(10)
+        expect(imageEditor2.view.originalHeight).toBe(10)
+      })
+    })
+  })
+})
diff --git a/packages/image-view/styles/image-view.less b/packages/image-view/styles/image-view.less
new file mode 100644
index 000000000..51312778b
--- /dev/null
+++ b/packages/image-view/styles/image-view.less
@@ -0,0 +1,117 @@
+@import "ui-variables";
+
+@spacing: @component-padding/2;
+@transparent-background-image: "atom://image-view/images/transparent-background.png";
+
+.image-view {
+  display: flex;
+  flex-direction: column;
+  background-color: @pane-item-background-color;
+  user-select: none;
+
+
+  // Image Controls -------------------
+
+  .image-controls {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    flex-wrap: wrap;
+    padding: @spacing;
+    border-bottom: 1px solid @panel-heading-border-color;
+    background-color: @panel-heading-background-color;
+
+    a {
+      display: inline-block;
+      position: relative;
+      width: 24px;
+      height: 24px;
+      margin: @spacing;
+      vertical-align: middle;
+      font-size: 0;
+      border-radius: 22px;
+      border: 2px solid #fff;
+      box-shadow: inset 0 1px 2px hsla(0,0%,0%,.4), 0 0 0 1px hsla(0,0%,0%,.1), 0 2px 2px hsla(0,0%,0%,.2);
+      background-clip: content-box;
+
+      &:hover {
+        border-color: #ccc;
+      }
+      &:active {
+        border-color: #999;
+      }
+    }
+
+    &-color-white {
+      color: #000;
+      background-color: #fff;
+      background-image: url(@transparent-background-image);
+    }
+
+    &-color-black {
+      color: #fff;
+      background-color: #000;
+      background-image: url(@transparent-background-image);
+    }
+
+    .btn-group {
+      margin: @spacing;
+    }
+
+    .reset-zoom-button {
+      min-width: 5em;
+    }
+
+    // disabled once the button is selected
+    .zoom-to-fit-button.selected {
+      pointer-events: none;
+      cursor: default;
+    }
+  }
+
+
+  // Image -------------------
+
+  .image-container {
+    flex: 1 1 0;
+    display: flex;
+    overflow: auto;
+
+    img {
+      flex: none;
+      margin: auto;
+    }
+  }
+
+  // Background color
+  [background="white"] {
+    background-color: white;
+    background-image: url(@transparent-background-image);
+  }
+  [background="black"] {
+    background-color: black;
+    background-image: url(@transparent-background-image);
+  }
+
+
+
+  // Zoom to fit -------------------
+  // Scales the image to fit the available space.
+
+  .zoom-to-fit {
+    &.image-container {
+      padding: @component-padding;
+
+      img {
+        flex: 1 1 0;
+        min-width: 0;
+        margin: 0;
+
+        // Alternative: object-fit: contain;
+        // then it would also scale larger than its original size
+        object-fit: scale-down;
+      }
+    }
+  }
+
+}
diff --git a/packages/incompatible-packages/LICENSE.md b/packages/incompatible-packages/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/incompatible-packages/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/incompatible-packages/README.md b/packages/incompatible-packages/README.md
index 43b92d7c4..3caef9838 100644
--- a/packages/incompatible-packages/README.md
+++ b/packages/incompatible-packages/README.md
@@ -1,6 +1,6 @@
 # Incompatible Packages package
 
-Displays a list of installed Atom packages that have native module
-dependencies that are not compatible with the current version of Atom.
+Displays a list of installed Pulsar packages that have native module
+dependencies that are not compatible with the current version of Pulsar.
 
 ![](https://cloud.githubusercontent.com/assets/671378/3767534/3f099820-18ce-11e4-9fa0-feef7947aab2.png)
diff --git a/packages/incompatible-packages/package-lock.json b/packages/incompatible-packages/package-lock.json
new file mode 100644
index 000000000..0ad64a924
--- /dev/null
+++ b/packages/incompatible-packages/package-lock.json
@@ -0,0 +1,24 @@
+{
+  "name": "incompatible-packages",
+  "version": "0.27.3",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "incompatible-packages",
+      "version": "0.27.3",
+      "license": "MIT",
+      "dependencies": {
+        "etch": "^0.12.2"
+      },
+      "engines": {
+        "atom": ">0.50.0"
+      }
+    },
+    "node_modules/etch": {
+      "version": "0.12.8",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.12.8.tgz",
+      "integrity": "sha512-dFLRe4wLroVtwzyy1vGlE3BSDZHiL0kZME5XgNGzZIULcYTvVno8vbiIleAesoKJmwWaxDTzG+4eppg2zk14JQ=="
+    }
+  }
+}
diff --git a/packages/language-c/LICENSE.md b/packages/language-c/LICENSE.md
index 1aac5cb84..a88a9ddb2 100644
--- a/packages/language-c/LICENSE.md
+++ b/packages/language-c/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-c/README.md b/packages/language-c/README.md
index 6524426b1..4448fbfec 100644
--- a/packages/language-c/README.md
+++ b/packages/language-c/README.md
@@ -2,7 +2,7 @@
 
 Adds syntax highlighting and snippets to C/C++ files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate)
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate)
 from the [C TextMate bundle](https://github.com/textmate/c.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a
diff --git a/packages/language-c/grammars/c++.cson b/packages/language-c/grammars/c++.cson
index 16dc335d0..d27a4f8a3 100644
--- a/packages/language-c/grammars/c++.cson
+++ b/packages/language-c/grammars/c++.cson
@@ -69,9 +69,17 @@
     'name': 'punctuation.separator.namespace.access.cpp'
   }
   {
-    'match': '\\b(and|and_eq|bitand|bitor|compl|not|not_eq|or|or_eq|typeid|xor|xor_eq|alignof|alignas)\\b'
+    'match': '\\b(typeid|alignof|alignas)\\b'
     'name': 'keyword.operator.cpp'
   }
+  {
+    'match': '\\b(and|and_eq|bitand|bitor|compl|not|not_eq|or|or_eq|xor|xor_eq)\\b'
+    'name': 'keyword.operator.alias.cpp'
+  }
+  {
+    'match': '\\bstatic_assert\\b'
+    'name': 'keyword.static-assert.cpp'
+  }
   {
     'match': '\\b(class|decltype|wchar_t|char16_t|char32_t)\\b'
     'name': 'storage.type.cpp'
@@ -242,7 +250,7 @@
         "name": "meta.using-namespace-declaration.cpp"
       },
       {
-        'begin': '\\b(namespace)\\b\\s*([_A-Za-z][_A-Za-z0-9]*\\b)?+'
+        'begin': '\\b(namespace)\\b\\s*((?:[_A-Za-z][_A-Za-z0-9]*\\b(::)?)*)?+'
         'beginCaptures':
           '1':
             'name': 'storage.type.cpp'
@@ -281,33 +289,36 @@
         ]
       }
       {
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+        'begin': '\\b(class|struct)\\b\\s*([_A-Za-z][_A-Za-z0-9]*\\b)?+(\\s*:\\s)?'
         'beginCaptures':
           '1':
             'name': 'storage.type.cpp'
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         'end': '(?<=\\})|(?=(;|\\(|\\)|>|\\[|\\]|=))'
         'name': 'meta.class-struct-block.cpp'
         'patterns': [
           {
             'include': '#angle_brackets'
           }
+          {
+            'begin': '(virtual\\s*)?(public|protected|private)\\s*(virtual\\s*)?([_A-Za-z][_A-Za-z0-9]*)\\b'
+            'beginCaptures':
+              '1':
+                'name': 'storage.type.modifier.cpp'
+              '2':
+                'name': 'storage.type.modifier.cpp'
+              '3':
+                'name': 'storage.type.modifier.cpp'
+              '4':
+                'name': 'entity.name.type.inherited.cpp'
+            'end': '(\\{)|(\\s*\\n)|(,)?'
+            'patterns': [
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diff --git a/packages/language-c/grammars/tree-sitter-cpp.cson b/packages/language-c/grammars/tree-sitter-cpp.cson
index d8fb0e4e4..796c93e10 100644
--- a/packages/language-c/grammars/tree-sitter-cpp.cson
+++ b/packages/language-c/grammars/tree-sitter-cpp.cson
@@ -90,6 +90,7 @@ scopes:
   '"#define"': 'keyword.control.directive'
   '"#include"': 'keyword.control.directive'
   'preproc_directive': 'keyword.control.directive'
+  '"static_assert"': 'keyword.control.directive'
 
   '"if"': 'keyword.control'
   '"else"': 'keyword.control'
@@ -133,12 +134,14 @@ scopes:
   call_expression > identifier,
   call_expression > field_expression > field_identifier,
   call_expression > scoped_identifier > identifier,
+  call_expression > qualified_identifier > identifier,
   template_function > identifier,
   template_function > scoped_identifier > identifier,
   template_method > field_identifier,
   function_declarator > identifier,
   function_declarator > field_identifier,
   function_declarator > scoped_identifier > identifier,
+  function_declarator > qualified_identifier > identifier,
   destructor_name > identifier
   ''': 'entity.name.function'
 
@@ -224,8 +227,8 @@ scopes:
   '"=="': 'keyword.operator'
   '"!"': 'keyword.operator'
   '"!="': 'keyword.operator'
-  'relational_expression > "<"': 'keyword.operator'
-  'relational_expression > ">"': 'keyword.operator'
+  'binary_expression > "<"': 'keyword.operator'
+  'binary_expression > ">"': 'keyword.operator'
   '">="': 'keyword.operator'
   '"<="': 'keyword.operator'
   '"&&"': 'keyword.operator'
diff --git a/packages/language-c/package-lock.json b/packages/language-c/package-lock.json
index 786af1306..05ed52716 100644
--- a/packages/language-c/package-lock.json
+++ b/packages/language-c/package-lock.json
@@ -5,394 +5,63 @@
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   "packages": {
     "": {
-      "version": "0.60.19",
+      "name": "language-c",
+      "version": "0.60.20",
       "license": "MIT",
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-        "tree-sitter-cpp": "0.19.0"
-      },
-      "devDependencies": {
-        "coffeelint": "^1.10.1"
+        "tree-sitter-c": "0.20.2",
+        "tree-sitter-cpp": "0.20.0"
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-      "deprecated": "CoffeeScript on NPM has moved to \"coffeescript\" (no hyphen)",
-      "dev": true,
-      "bin": {
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-        "coffee": "bin/coffee"
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-      "integrity": "sha512-nCbHpC3ZaLnuvfHVtC40M5Mzc4QA11Zogz/lLUMBirysxmc9ResCN+gNMWjl7OrG4RPRSd0wQbjg9z6UTtl0SQ==",
+      "version": "0.20.0",
+      "resolved": "https://registry.npmjs.org/tree-sitter-cpp/-/tree-sitter-cpp-0.20.0.tgz",
+      "integrity": "sha512-ka1KoFfmLX9dmus8S+NrXxEN+k2PWJOZi60vO3hnR2lnRIr4FYBSXZKmTgQnCd8/w0UM7sNtgETvW1SM1qJ9og==",
       "requires": {
         "nan": "^2.14.0"
       }
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-clojure/LICENSE.md b/packages/language-clojure/LICENSE.md
index 6c77a82ce..0e8530c40 100644
--- a/packages/language-clojure/LICENSE.md
+++ b/packages/language-clojure/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-clojure/README.md b/packages/language-clojure/README.md
index 9b10930ce..e2fcc5e97 100644
--- a/packages/language-clojure/README.md
+++ b/packages/language-clojure/README.md
@@ -2,7 +2,7 @@
 
 Adds syntax highlighting to Clojure files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate)
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate)
 from the [Clojure TextMate bundle](https://github.com/mmcgrana/textmate-clojure).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-clojure/package-lock.json b/packages/language-clojure/package-lock.json
new file mode 100644
index 000000000..a5e045a1a
--- /dev/null
+++ b/packages/language-clojure/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-clojure",
+  "version": "0.22.8",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-clojure",
+      "version": "0.22.8",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-coffee-script/LICENSE.md b/packages/language-coffee-script/LICENSE.md
index c9b97c569..46bcfb089 100644
--- a/packages/language-coffee-script/LICENSE.md
+++ b/packages/language-coffee-script/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-coffee-script/README.md b/packages/language-coffee-script/README.md
index 225d2ce75..9bdeeeab8 100644
--- a/packages/language-coffee-script/README.md
+++ b/packages/language-coffee-script/README.md
@@ -2,6 +2,6 @@
 
 Adds syntax highlighting and snippets to CoffeeScript files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [CoffeeScript TextMate bundle](https://github.com/jashkenas/coffee-script-tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [CoffeeScript TextMate bundle](https://github.com/jashkenas/coffee-script-tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-coffee-script/package-lock.json b/packages/language-coffee-script/package-lock.json
index d86793177..43cfbff7e 100644
--- a/packages/language-coffee-script/package-lock.json
+++ b/packages/language-coffee-script/package-lock.json
@@ -1,156 +1,17 @@
 {
   "name": "language-coffee-script",
   "version": "0.50.0",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
+  "packages": {
+    "": {
+      "name": "language-coffee-script",
+      "version": "0.50.0",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
       }
-    },
-    "coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "dev": true
-    },
-    "coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "requires": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
-      }
-    },
-    "concat-map": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
-    },
-    "fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
-    "glob": {
-      "version": "7.1.3",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
-      "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
-      "dev": true,
-      "requires": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.0.4",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
-      }
-    },
-    "ignore": {
-      "version": "3.3.10",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-      "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-      "dev": true
-    },
-    "inflight": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
-      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
-      "dev": true,
-      "requires": {
-        "once": "^1.3.0",
-        "wrappy": "1"
-      }
-    },
-    "inherits": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-      "dev": true
-    },
-    "minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
-      "dev": true,
-      "requires": {
-        "brace-expansion": "^1.1.7"
-      }
-    },
-    "minimist": {
-      "version": "0.0.10",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
-      "dev": true
-    },
-    "once": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
-      "dev": true,
-      "requires": {
-        "wrappy": "1"
-      }
-    },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
-    "path-is-absolute": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
-      "dev": true
-    },
-    "resolve": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-csharp/LICENSE.md b/packages/language-csharp/LICENSE.md
index 0d94e407b..5fadae3e4 100644
--- a/packages/language-csharp/LICENSE.md
+++ b/packages/language-csharp/LICENSE.md
@@ -1,6 +1,7 @@
 MIT License
 
-Copyright (c) 2016 .NET Foundation, GitHub Inc.
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2016 .NET Foundation, GitHub Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -22,5 +23,5 @@ SOFTWARE.
 
 --------------------------------------------------------------------
 
-This package uses the 
+This package uses the
 https://github.com/dotnet/csharp-tmLanguage from the .NET Foundation
diff --git a/packages/language-csharp/README.md b/packages/language-csharp/README.md
index 89d03ab4a..f6effac8f 100644
--- a/packages/language-csharp/README.md
+++ b/packages/language-csharp/README.md
@@ -4,4 +4,4 @@ Adds syntax highlighting and snippets to C# files in Pulsar.
 
 The C# grammar comes from the [.NET Foundation's C# grammar](https://github.com/dotnet/csharp-tmLanguage)
 
-Contributions and issues with the the grammar should be raised upstream. 
+Contributions and issues with the the grammar should be raised upstream.
diff --git a/packages/language-csharp/package-lock.json b/packages/language-csharp/package-lock.json
new file mode 100644
index 000000000..f37c7fdc6
--- /dev/null
+++ b/packages/language-csharp/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "language-csharp",
+  "version": "1.1.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-csharp",
+      "version": "1.1.0",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.50.0"
+      }
+    }
+  }
+}
diff --git a/packages/language-css/LICENSE.md b/packages/language-css/LICENSE.md
index 04e53c81a..e9c310794 100644
--- a/packages/language-css/LICENSE.md
+++ b/packages/language-css/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-css/README.md b/packages/language-css/README.md
index 5f0862b78..81568d4c4 100644
--- a/packages/language-css/README.md
+++ b/packages/language-css/README.md
@@ -2,7 +2,7 @@
 
 Adds syntax highlighting, completions, and snippets to CSS files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate)
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate)
 from the [CSS TextMate bundle](https://github.com/textmate/css.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a
diff --git a/packages/language-css/package-lock.json b/packages/language-css/package-lock.json
index abb1afd12..5b822d5a6 100644
--- a/packages/language-css/package-lock.json
+++ b/packages/language-css/package-lock.json
@@ -1,169 +1,34 @@
 {
   "name": "language-css",
   "version": "0.45.4",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
+  "packages": {
+    "": {
+      "name": "language-css",
+      "version": "0.45.4",
+      "license": "MIT",
+      "dependencies": {
+        "tree-sitter-css": "^0.19.0"
+      },
+      "engines": {
+        "atom": "*",
+        "node": "*"
       }
     },
-    "coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "dev": true
-    },
-    "coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "requires": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
-      }
-    },
-    "concat-map": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
-    },
-    "fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
-    "glob": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
-      "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
-      "dev": true,
-      "requires": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.0.4",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
-      }
-    },
-    "ignore": {
-      "version": "3.3.10",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-      "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-      "dev": true
-    },
-    "inflight": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
-      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
-      "dev": true,
-      "requires": {
-        "once": "^1.3.0",
-        "wrappy": "1"
-      }
-    },
-    "inherits": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
-      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
-      "dev": true
-    },
-    "minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
-      "dev": true,
-      "requires": {
-        "brace-expansion": "^1.1.7"
-      }
-    },
-    "minimist": {
-      "version": "0.0.10",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
-      "dev": true
-    },
-    "nan": {
+    "node_modules/nan": {
       "version": "2.14.2",
       "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.2.tgz",
       "integrity": "sha512-M2ufzIiINKCuDfBSAUr1vWQ+vuVcA9kqx8JJUsbQi6yf1uGRyb7HfpdfUr5qLXf3B/t8dPvcjhKMmlfnP47EzQ=="
     },
-    "once": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
-      "dev": true,
-      "requires": {
-        "wrappy": "1"
-      }
-    },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
-    "path-is-absolute": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
-      "dev": true
-    },
-    "resolve": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true
-    },
-    "tree-sitter-css": {
+    "node_modules/tree-sitter-css": {
       "version": "0.19.0",
       "resolved": "https://registry.npmjs.org/tree-sitter-css/-/tree-sitter-css-0.19.0.tgz",
       "integrity": "sha512-LYCHS1V2bzeNJr8Mgh60H06qB8NNJyRJVgW1gKCEjcm5S48d8H9xOnrzIlsyLHaXFfnGWCrHJ6jxN6G3s5fJTA==",
-      "requires": {
+      "hasInstallScript": true,
+      "dependencies": {
         "nan": "^2.14.1"
       }
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-gfm/LICENSE.md b/packages/language-gfm/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/language-gfm/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/language-gfm/package-lock.json b/packages/language-gfm/package-lock.json
new file mode 100644
index 000000000..97dd9d53b
--- /dev/null
+++ b/packages/language-gfm/package-lock.json
@@ -0,0 +1,42 @@
+{
+  "name": "language-gfm",
+  "version": "0.90.8",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-gfm",
+      "version": "0.90.8",
+      "license": "MIT",
+      "devDependencies": {
+        "coffeescript": "^1.7.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/coffeescript": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/coffeescript/-/coffeescript-1.7.0.tgz",
+      "integrity": "sha512-qRRHmRVRomUAtkx1+9lmgAnwpoFaHjJPLnUtwDQbwdbFGGeeEojYxMa/hTHnp/7YeezyjvHgzYUzrWPPzfNBFw==",
+      "dev": true,
+      "dependencies": {
+        "mkdirp": "~0.3.5"
+      },
+      "bin": {
+        "cake": "bin/cake",
+        "coffee": "bin/coffee"
+      },
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    },
+    "node_modules/mkdirp": {
+      "version": "0.3.5",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.3.5.tgz",
+      "integrity": "sha512-8OCq0De/h9ZxseqzCH8Kw/Filf5pF/vMI6+BH7Lu0jXz2pqYCjTAQRolSxRIi+Ax+oCCjlxoJMP0YQ4XlrQNHg==",
+      "deprecated": "Legacy versions of mkdirp are no longer supported. Please update to mkdirp 1.x. (Note that the API surface has changed to use Promises in 1.x.)",
+      "dev": true
+    }
+  }
+}
diff --git a/packages/language-gfm/package.json b/packages/language-gfm/package.json
index 7e000be64..b74c4aa5a 100644
--- a/packages/language-gfm/package.json
+++ b/packages/language-gfm/package.json
@@ -8,6 +8,6 @@
     "atom": "*"
   },
   "devDependencies": {
-    "coffee-script": "1.7.0"
+    "coffeescript": "^1.7.0"
   }
 }
diff --git a/packages/language-git/LICENSE.md b/packages/language-git/LICENSE.md
index 98c7a866f..1e30fedbf 100644
--- a/packages/language-git/LICENSE.md
+++ b/packages/language-git/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-git/README.md b/packages/language-git/README.md
index 95f5f43a0..39eeb0cd1 100644
--- a/packages/language-git/README.md
+++ b/packages/language-git/README.md
@@ -5,7 +5,7 @@ Adds syntax highlighting to Git commit, merge, and rebase messages edited in Pul
 You can configure Pulsar to be your Git editor with the following command:
 
 ```sh
-git config --global core.editor "atom --wait"
+git config --global core.editor "pulsar --wait"
 ```
 
 ## Commit message highlighting
@@ -19,11 +19,11 @@ This package uses warning and error highlighting to help bring attention to some
 
 ## Diff highlighting
 
-If [language-diff](https://atom.io/packages/language-diff) is installed, the
+If [language-diff](https://web.pulsar-edit.dev/packages/language-diff) is installed, the
 diff part of `git commit --verbose` messages is highlighted as well.
 
 ## Background
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Git TextMate bundle](https://github.com/textmate/git.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Git TextMate bundle](https://github.com/textmate/git.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-git/package-lock.json b/packages/language-git/package-lock.json
new file mode 100644
index 000000000..b084e4c97
--- /dev/null
+++ b/packages/language-git/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-git",
+  "version": "0.19.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-git",
+      "version": "0.19.1",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-go/LICENSE.md b/packages/language-go/LICENSE.md
index e19c32e5f..b28e5ec24 100644
--- a/packages/language-go/LICENSE.md
+++ b/packages/language-go/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-go/README.md b/packages/language-go/README.md
index 7c4161078..b112312d6 100644
--- a/packages/language-go/README.md
+++ b/packages/language-go/README.md
@@ -1,7 +1,7 @@
-# Go language support in Atom
+# Go language support in Pulsar
 
-Adds syntax highlighting and snippets to Go files in Atom.
+Adds syntax highlighting and snippets to Go files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Go TextMate bundle](https://github.com/rsms/Go.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Go TextMate bundle](https://github.com/rsms/Go.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-go/package-lock.json b/packages/language-go/package-lock.json
index 36feeaabd..091b29c14 100644
--- a/packages/language-go/package-lock.json
+++ b/packages/language-go/package-lock.json
@@ -5,190 +5,22 @@
   "requires": true,
   "packages": {
     "": {
-      "version": "0.47.2",
+      "name": "language-go",
+      "version": "0.47.3",
       "license": "MIT",
       "dependencies": {
         "tree-sitter-go": "0.19.1"
       },
-      "devDependencies": {
-        "coffeelint": "^1.10.1"
-      },
       "engines": {
         "atom": "*",
         "node": "*"
       }
     },
-    "node_modules/balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "node_modules/brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "dependencies": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
-      }
-    },
-    "node_modules/coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "deprecated": "CoffeeScript on NPM has moved to \"coffeescript\" (no hyphen)",
-      "dev": true,
-      "bin": {
-        "cake": "bin/cake",
-        "coffee": "bin/coffee"
-      },
-      "engines": {
-        "node": ">=0.8.0"
-      }
-    },
-    "node_modules/coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "dependencies": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
-      },
-      "bin": {
-        "coffeelint": "bin/coffeelint"
-      },
-      "engines": {
-        "node": ">=0.8.0",
-        "npm": ">=1.3.7"
-      }
-    },
-    "node_modules/concat-map": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
-    },
-    "node_modules/fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
-    "node_modules/glob": {
-      "version": "7.1.3",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
-      "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
-      "dev": true,
-      "dependencies": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.0.4",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
-      },
-      "engines": {
-        "node": "*"
-      }
-    },
-    "node_modules/ignore": {
-      "version": "3.3.10",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-      "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-      "dev": true
-    },
-    "node_modules/inflight": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
-      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
-      "dev": true,
-      "dependencies": {
-        "once": "^1.3.0",
-        "wrappy": "1"
-      }
-    },
-    "node_modules/inherits": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-      "dev": true
-    },
-    "node_modules/minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
-      "dev": true,
-      "dependencies": {
-        "brace-expansion": "^1.1.7"
-      },
-      "engines": {
-        "node": "*"
-      }
-    },
-    "node_modules/minimist": {
-      "version": "0.0.10",
-      "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
-      "dev": true
-    },
     "node_modules/nan": {
       "version": "2.14.0",
       "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
       "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg=="
     },
-    "node_modules/once": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
-      "dev": true,
-      "dependencies": {
-        "wrappy": "1"
-      }
-    },
-    "node_modules/optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "dependencies": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
-    "node_modules/path-is-absolute": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
-      "dev": true,
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
-    "node_modules/resolve": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "node_modules/strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true,
-      "bin": {
-        "strip-json-comments": "cli.js"
-      },
-      "engines": {
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-      }
-    },
     "node_modules/tree-sitter-go": {
       "version": "0.19.1",
       "resolved": "https://registry.npmjs.org/tree-sitter-go/-/tree-sitter-go-0.19.1.tgz",
@@ -197,165 +29,14 @@
       "dependencies": {
         "nan": "^2.14.0"
       }
-    },
-    "node_modules/wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true,
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-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   },
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-    "balanced-match": {
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-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
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-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
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-      }
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-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
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-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
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-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
-      "dev": true
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     "nan": {
       "version": "2.14.0",
       "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
       "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg=="
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-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
-      "dev": true,
-      "requires": {
-        "wrappy": "1"
-      }
-    },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
-    "path-is-absolute": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
-      "dev": true
-    },
-    "resolve": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true
-    },
     "tree-sitter-go": {
       "version": "0.19.1",
       "resolved": "https://registry.npmjs.org/tree-sitter-go/-/tree-sitter-go-0.19.1.tgz",
@@ -363,18 +44,6 @@
       "requires": {
         "nan": "^2.14.0"
       }
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-html/LICENSE.md b/packages/language-html/LICENSE.md
index f53986684..4a296e172 100644
--- a/packages/language-html/LICENSE.md
+++ b/packages/language-html/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-html/README.md b/packages/language-html/README.md
index 2cb31f0de..d9a0ffe0b 100644
--- a/packages/language-html/README.md
+++ b/packages/language-html/README.md
@@ -1,8 +1,8 @@
-# HTML language support in Atom
+# HTML language support in Pulsar
 
-Adds syntax highlighting and snippets to HTML files in Atom.
+Adds syntax highlighting and snippets to HTML files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate)
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate)
 from the [HTML TextMate bundle](https://github.com/textmate/html.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a
diff --git a/packages/language-html/package-lock.json b/packages/language-html/package-lock.json
index 5270a652f..2947a9480 100644
--- a/packages/language-html/package-lock.json
+++ b/packages/language-html/package-lock.json
@@ -1,202 +1,79 @@
 {
   "name": "language-html",
   "version": "0.53.1",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "atom-grammar-test": {
+  "packages": {
+    "": {
+      "name": "language-html",
+      "version": "0.53.1",
+      "license": "MIT",
+      "dependencies": {
+        "atom-grammar-test": "^0.6.3",
+        "tree-sitter-embedded-template": "0.19.0",
+        "tree-sitter-html": "0.19.0"
+      },
+      "devDependencies": {
+        "dedent": "^0.7.0"
+      },
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    },
+    "node_modules/atom-grammar-test": {
       "version": "0.6.4",
       "resolved": "https://registry.npmjs.org/atom-grammar-test/-/atom-grammar-test-0.6.4.tgz",
       "integrity": "sha1-2KU1A9H+k5mX9Ji3SirDEARKfU4=",
-      "requires": {
+      "dependencies": {
         "chevrotain": "^0.18.0",
         "escape-string-regexp": "^1.0.5"
+      },
+      "engines": {
+        "atom": ">=1.0.0 <2.0.0"
       }
     },
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
-      }
-    },
-    "chevrotain": {
+    "node_modules/chevrotain": {
       "version": "0.18.0",
       "resolved": "https://registry.npmjs.org/chevrotain/-/chevrotain-0.18.0.tgz",
       "integrity": "sha1-sodxTjFZC64sXR4vYRZz7+xHnYA="
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-      "dev": true
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-      "dev": true,
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-        "coffee-script": "~1.11.0",
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-        "ignore": "^3.0.9",
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-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
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       "resolved": "https://registry.npmjs.org/dedent/-/dedent-0.7.0.tgz",
       "integrity": "sha1-JJXduvbrh0q7Dhvp3yLS5aVEMmw=",
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       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
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-        "path-is-absolute": "^1.0.0"
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
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-        "minimist": "~0.0.1",
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+    "node_modules/tree-sitter-html": {
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-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true
-    },
-    "tree-sitter-embedded-template": {
-      "version": "0.15.2",
-      "resolved": "https://registry.npmjs.org/tree-sitter-embedded-template/-/tree-sitter-embedded-template-0.15.2.tgz",
-      "integrity": "sha512-DHT4KAzFbtj/5XhSZWCkf7LP1SYIi4gSSOZHVH9SqEv1DIc9rSmgNO3rzIyMoRclusLoL2susmokL/hYkj56+A==",
-      "requires": {
-        "nan": "^2.0.0"
-      }
-    },
-    "tree-sitter-html": {
-      "version": "0.15.1",
-      "resolved": "https://registry.npmjs.org/tree-sitter-html/-/tree-sitter-html-0.15.1.tgz",
-      "integrity": "sha512-hf1dTxB6OIlDk+mkxLaHC1boKUxmnp0qxt8nApZZ6zf3VWj5FeYlWv93GX5+gLL3NkLAjaUKGZGFXpR+wE97Jg==",
-      "requires": {
-        "nan": "^2.10.0"
-      }
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-html/spec/html-spec.coffee b/packages/language-html/spec/html-spec.coffee
index f346a202b..6880a530b 100644
--- a/packages/language-html/spec/html-spec.coffee
+++ b/packages/language-html/spec/html-spec.coffee
@@ -181,11 +181,8 @@ describe 'TextMate HTML grammar', ->
 
       expect(lines[0][0]).toEqual value: '<', scopes: ['text.html.basic', 'meta.tag.script.html', 'punctuation.definition.tag.html']
       expect(lines[1][0]).toEqual value: '  ', scopes: ['text.html.basic', 'meta.tag.script.html', 'source.coffee.embedded.html']
-      # TODO: Remove when Atom 1.21 reaches stable
-      if parseFloat(atom.getVersion()) <= 1.20
-        expect(lines[1][1]).toEqual value: '->', scopes: ['text.html.basic', 'meta.tag.script.html', 'source.coffee.embedded.html', 'storage.type.function.coffee']
-      else
-        expect(lines[1][1]).toEqual value: '->', scopes: ['text.html.basic', 'meta.tag.script.html', 'source.coffee.embedded.html', 'meta.function.inline.coffee', 'storage.type.function.coffee']
+
+      expect(lines[1][1]).toEqual value: '->', scopes: ['text.html.basic', 'meta.tag.script.html', 'source.coffee.embedded.html', 'meta.function.inline.coffee', 'storage.type.function.coffee']
       expect(lines[2][0]).toEqual value: '</', scopes: ['text.html.basic', 'meta.tag.script.html', 'punctuation.definition.tag.html']
 
     it 'tokenizes multiline tags', ->
@@ -197,11 +194,8 @@ describe 'TextMate HTML grammar', ->
       '''
 
       expect(lines[0][0]).toEqual value: '<', scopes: ['text.html.basic', 'meta.tag.script.html', 'punctuation.definition.tag.html']
-      # TODO: Remove when Atom 1.21 reaches stable
-      if parseFloat(atom.getVersion()) <= 1.20
-        expect(lines[2][1]).toEqual value: '->', scopes: ['text.html.basic', 'meta.tag.script.html', 'source.coffee.embedded.html', 'storage.type.function.coffee']
-      else
-        expect(lines[2][1]).toEqual value: '->', scopes: ['text.html.basic', 'meta.tag.script.html', 'source.coffee.embedded.html', 'meta.function.inline.coffee', 'storage.type.function.coffee']
+
+      expect(lines[2][1]).toEqual value: '->', scopes: ['text.html.basic', 'meta.tag.script.html', 'source.coffee.embedded.html', 'meta.function.inline.coffee', 'storage.type.function.coffee']
       expect(lines[3][0]).toEqual value: '</', scopes: ['text.html.basic', 'meta.tag.script.html', 'punctuation.definition.tag.html']
 
     it 'recognizes closing script tags in comments', ->
diff --git a/packages/language-hyperlink/LICENSE.md b/packages/language-hyperlink/LICENSE.md
index 1b2e03973..a9cc556af 100644
--- a/packages/language-hyperlink/LICENSE.md
+++ b/packages/language-hyperlink/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-hyperlink/README.md b/packages/language-hyperlink/README.md
index 9f9e1a126..f8c38c0f1 100644
--- a/packages/language-hyperlink/README.md
+++ b/packages/language-hyperlink/README.md
@@ -1,9 +1,9 @@
-# Hyperlink colorization in Atom
+# Hyperlink colorization in Pulsar
 
 Adds syntax highlighting to hyperlinks embedded in strings, comments, and plain
-text in Atom.
+text in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate)
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate)
 from the [Hyperlink Helper TextMate bundle](https://github.com/textmate/hyperlink-helper.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a
diff --git a/packages/language-hyperlink/package-lock.json b/packages/language-hyperlink/package-lock.json
new file mode 100644
index 000000000..d618af7ea
--- /dev/null
+++ b/packages/language-hyperlink/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-hyperlink",
+  "version": "0.17.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-hyperlink",
+      "version": "0.17.1",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-java/.github/workflows/build.yml b/packages/language-java/.github/workflows/build.yml
deleted file mode 100644
index ffda7fd7d..000000000
--- a/packages/language-java/.github/workflows/build.yml
+++ /dev/null
@@ -1,83 +0,0 @@
-name: build
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  test:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ ubuntu-latest, macos-latest, windows-latest ]
-        channel: [ stable, beta ]
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Install Atom and APM (Linux)
-        if: ${{ matrix.os == 'ubuntu-latest' }}
-        run: |
-          curl -s -L "https://atom.io/download/deb?channel=${{ matrix.channel }}" -o "atom-amd64.deb"
-          /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -ac -screen 0 1280x1024x16
-          dpkg-deb -x atom-amd64.deb ${HOME}/atom
-          if [ ${{ matrix.channel }} == "stable" ]; then
-            APP_DIR="${HOME}/atom/usr/share/atom"
-          else
-            APP_DIR="${HOME}/atom/usr/share/atom-${{ matrix.channel }}"
-          fi
-          echo DISPLAY=":99" >> $GITHUB_ENV
-          echo "${APP_DIR}" >> $GITHUB_PATH
-          echo "${APP_DIR}/resources/app/apm/node_modules/.bin" >> $GITHUB_PATH
-          echo "./node_modules/.bin" >> $GITHUB_PATH
-
-      - name: Install Atom and APM (MacOS)
-        if: ${{ matrix.os == 'macos-latest' }}
-        run: |
-          curl -s -L "https://atom.io/download/mac?channel=${{ matrix.channel }}" -o "atom.zip"
-          mkdir ${HOME}/.atom && unzip -q atom.zip -d ${HOME}/.atom
-          if [ ${{ matrix.channel }} == "stable" ]; then
-            APP_DIR="${HOME}/.atom/Atom.app/Contents/Resources/app"
-          else
-            APP_DIR="${HOME}/.atom/Atom ${{ matrix.channel }}.app/Contents/Resources/app"
-          fi
-          ln -s "${APP_DIR}/atom.sh" "${APP_DIR}/atom"
-          echo "${APP_DIR}" >> $GITHUB_PATH
-          echo "${APP_DIR}/apm/bin" >> $GITHUB_PATH
-          echo "./node_modules/.bin" >> $GITHUB_PATH
-
-      - name: Install Atom and APM (Windows)
-        if: ${{ matrix.os == 'windows-latest' }}
-        run: |
-          Invoke-WebRequest -Uri "https://atom.io/download/windows_zip?channel=${{ matrix.channel }}" -OutFile "atom.zip"
-          Unzip "atom.zip"
-          $ATOM_CHANNEL = "Atom"
-          if ("${{ matrix.channel }}" -ne "stable") {
-            $ATOM_CHANNEL += " "
-            $ATOM_CHANNEL += "${{ matrix.channel }}".substring(0, 1).toupper()
-            $ATOM_CHANNEL += "${{ matrix.channel }}".substring(1).tolower()
-          }
-          echo npm_config_msvs_version="2019" >> ${env:GITHUB_ENV}
-          echo "$ATOM_CHANNEL/resources/cli" >> ${env:GITHUB_PATH}
-          echo "$ATOM_CHANNEL/resources/app/apm/bin" >> ${env:GITHUB_PATH}
-          echo "./node_modules/.bin" >> ${env:GITHUB_PATH}
-
-      - name: Print Atom and APM versions
-        run: |
-          atom -v
-          apm -v
-
-      - name: Install dependencies
-        run: |
-          apm install
-          apm clean
-          npm install
-
-      - name: Test
-        run: |
-          atom --test spec
diff --git a/packages/language-java/LICENSE.md b/packages/language-java/LICENSE.md
index 2b5dd0c93..99feb2813 100644
--- a/packages/language-java/LICENSE.md
+++ b/packages/language-java/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-java/README.md b/packages/language-java/README.md
index 2f23e5f6a..a01603ea0 100644
--- a/packages/language-java/README.md
+++ b/packages/language-java/README.md
@@ -1,7 +1,7 @@
-# Java language support in Atom
+# Java language support in Pulsar
 
-Add syntax highlighting and snippets to Java/JSP files in Atom.
+Add syntax highlighting and snippets to Java/JSP files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Java TextMate bundle](https://github.com/textmate/java.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Java TextMate bundle](https://github.com/textmate/java.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-java/package-lock.json b/packages/language-java/package-lock.json
index 7b81e7eee..920dde513 100644
--- a/packages/language-java/package-lock.json
+++ b/packages/language-java/package-lock.json
@@ -1,169 +1,34 @@
 {
   "name": "language-java",
   "version": "0.32.1",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
+  "packages": {
+    "": {
+      "name": "language-java",
+      "version": "0.32.1",
+      "license": "MIT",
+      "dependencies": {
+        "tree-sitter-java": "0.19.1"
+      },
+      "engines": {
+        "atom": "*",
+        "node": "*"
       }
     },
-    "coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "dev": true
-    },
-    "coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "requires": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
-      }
-    },
-    "concat-map": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
-    },
-    "fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
-    "glob": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
-      "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
-      "dev": true,
-      "requires": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.0.4",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
-      }
-    },
-    "ignore": {
-      "version": "3.3.10",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-      "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-      "dev": true
-    },
-    "inflight": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
-      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
-      "dev": true,
-      "requires": {
-        "once": "^1.3.0",
-        "wrappy": "1"
-      }
-    },
-    "inherits": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
-      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
-      "dev": true
-    },
-    "minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
-      "dev": true,
-      "requires": {
-        "brace-expansion": "^1.1.7"
-      }
-    },
-    "minimist": {
-      "version": "0.0.10",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
-      "dev": true
-    },
-    "nan": {
+    "node_modules/nan": {
       "version": "2.14.1",
       "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.1.tgz",
       "integrity": "sha512-isWHgVjnFjh2x2yuJ/tj3JbwoHu3UC2dX5G/88Cm24yB6YopVgxvBObDY7n5xW6ExmFhJpSEQqFPvq9zaXc8Jw=="
     },
-    "once": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
-      "dev": true,
-      "requires": {
-        "wrappy": "1"
+    "node_modules/tree-sitter-java": {
+      "version": "0.19.1",
+      "resolved": "https://registry.npmjs.org/tree-sitter-java/-/tree-sitter-java-0.19.1.tgz",
+      "integrity": "sha512-yVm+4q1D4niaHcEf2iqhOcIaiSp3wxHjeC4eoLAqSQNVxSrhThmT1FEfM4yDgHV4XaxH+62xpKHCwYG9NzRt6Q==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "nan": "^2.14.1"
       }
-    },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
-    "path-is-absolute": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
-      "dev": true
-    },
-    "resolve": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true
-    },
-    "tree-sitter-java": {
-      "version": "0.16.0-dev2",
-      "resolved": "https://registry.npmjs.org/tree-sitter-java-dev/-/tree-sitter-java-dev-0.16.0-dev2.tgz",
-      "integrity": "sha512-BilPJ2SwvRKMTeq2WZdvVX5HiMYTLSncJATkqWiPRGUl157FcBjY42mzm3M42/5QQybb1nDJjW0tAvVA5iEHmw==",
-      "requires": {
-        "nan": "^2.12.1"
-      }
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-javascript/.gitignore b/packages/language-javascript/.gitignore
index d5f19d89b..3c3629e64 100644
--- a/packages/language-javascript/.gitignore
+++ b/packages/language-javascript/.gitignore
@@ -1,2 +1 @@
 node_modules
-package-lock.json
diff --git a/packages/language-javascript/LICENSE.md b/packages/language-javascript/LICENSE.md
index caa758eff..74c362cc1 100644
--- a/packages/language-javascript/LICENSE.md
+++ b/packages/language-javascript/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2015 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2015 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-javascript/README.md b/packages/language-javascript/README.md
index cfe8679b4..8040decf4 100644
--- a/packages/language-javascript/README.md
+++ b/packages/language-javascript/README.md
@@ -1,8 +1,8 @@
-# JavaScript language support in Atom
+# JavaScript language support in Pulsar
 
-Adds syntax highlighting and snippets for JavaScript in Atom.
+Adds syntax highlighting and snippets for JavaScript in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate)
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate)
 from the [JavaScript TextMate bundle](https://github.com/textmate/javascript.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a
diff --git a/packages/language-javascript/package-lock.json b/packages/language-javascript/package-lock.json
new file mode 100644
index 000000000..1ede7d630
--- /dev/null
+++ b/packages/language-javascript/package-lock.json
@@ -0,0 +1,54 @@
+{
+  "name": "language-javascript",
+  "version": "0.134.2",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-javascript",
+      "version": "0.134.2",
+      "license": "MIT",
+      "dependencies": {
+        "tree-sitter-javascript": "0.19.0",
+        "tree-sitter-jsdoc": "0.19.0",
+        "tree-sitter-regex": "0.19.0"
+      },
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    },
+    "node_modules/nan": {
+      "version": "2.17.0",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.17.0.tgz",
+      "integrity": "sha512-2ZTgtl0nJsO0KQCjEpxcIr5D+Yv90plTitZt9JBfQvVJDS5seMl3FOvsh3+9CoYWXf/1l5OaZzzF6nDm4cagaQ=="
+    },
+    "node_modules/tree-sitter-javascript": {
+      "version": "0.19.0",
+      "resolved": "https://registry.npmjs.org/tree-sitter-javascript/-/tree-sitter-javascript-0.19.0.tgz",
+      "integrity": "sha512-SNykDdNgmlJZhX02ZIu0TQF9P7t847jV7769SxA9XrZ2QXjofQsVTMEi9+LpXZKsI0UoFYI25FnZm3fFm0z2yw==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "nan": "^2.12.1"
+      }
+    },
+    "node_modules/tree-sitter-jsdoc": {
+      "version": "0.19.0",
+      "resolved": "https://registry.npmjs.org/tree-sitter-jsdoc/-/tree-sitter-jsdoc-0.19.0.tgz",
+      "integrity": "sha512-E2DgqInWSw+1wv+7uyJu0oYhWns0xaOSccqe4crLNnxo9uAQBjySaum8mNAfTu8Rh6jAnDr2DxuzKUBhOQxOwg==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "nan": "^2.14.1"
+      }
+    },
+    "node_modules/tree-sitter-regex": {
+      "version": "0.19.0",
+      "resolved": "https://registry.npmjs.org/tree-sitter-regex/-/tree-sitter-regex-0.19.0.tgz",
+      "integrity": "sha512-hKaGO6ect2MuGwY+PU89JJdkgwRRseDgVNiRaZTLXQyW8vAsZLOb/tkphY9NF9U+ZOeLATotKwG+rLykYYWXyA==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "nan": "^2.14.1"
+      }
+    }
+  }
+}
diff --git a/packages/language-javascript/snippets/language-javascript.cson b/packages/language-javascript/snippets/language-javascript.cson
index 24fdbb617..cef3df690 100644
--- a/packages/language-javascript/snippets/language-javascript.cson
+++ b/packages/language-javascript/snippets/language-javascript.cson
@@ -28,13 +28,13 @@
     'body': 'else if (${1:true}) {\n\t$2\n}'
   'for':
     'prefix' : 'for'
-    'body' : 'for (var ${2:i} = 0; ${2:i} < ${1:array}.length; ${2:i}++) {\n\t${1:array}[${2:i}]$3\n}'
+    'body' : 'for (let ${2:i} = 0; ${2:i} < ${1:array}.length; ${2:i}++) {\n\t${1:array}[${2:i}]$3\n}'
   'for in':
     'prefix': 'forin'
-    'body': 'for (var ${1:variable} in ${2:object}) {\n\t${3:if (${2:object}.hasOwnProperty(${1:variable})) {\n\t\t$4\n\t\\}}\n}'
+    'body': 'for (const ${1:variable} in ${2:object}) {\n\t${3:if (${2:object}.hasOwnProperty(${1:variable})) {\n\t\t$4\n\t\\}}\n}'
   'for of':
     'prefix': 'forof'
-    'body': 'for (var ${1:variable} of ${2:iterable}) {\n\t$3\n}'
+    'body': 'for (const ${1:variable} of ${2:iterable}) {\n\t$3\n}'
   'forEach':
     'prefix' : 'foreach'
     'body' : 'forEach((${1:item}, ${2:i}) => {\n\t$3\n});\n'
diff --git a/packages/language-javascript/spec/javascript-spec.coffee b/packages/language-javascript/spec/javascript-spec.coffee
index 192850ec2..1d6a9a0b8 100644
--- a/packages/language-javascript/spec/javascript-spec.coffee
+++ b/packages/language-javascript/spec/javascript-spec.coffee
@@ -838,14 +838,9 @@ describe "JavaScript grammar", ->
       expect(tokens[14]).toEqual value: '`', scopes: ['source.js', 'string.quoted.template.js', 'punctuation.definition.string.end.js']
 
   describe "HTML template strings", ->
-    # TODO: Remove after Atom 1.21 is released
     [tagScope, entityScope] = []
-    if parseFloat(atom.getVersion()) <= 1.21
-      tagScope = 'meta.tag.inline.any.html'
-      entityScope = 'entity.name.tag.inline.any.html'
-    else
-      tagScope = 'meta.tag.inline.b.html'
-      entityScope = 'entity.name.tag.inline.b.html'
+    tagScope = 'meta.tag.inline.b.html'
+    entityScope = 'entity.name.tag.inline.b.html'
 
     beforeEach ->
       waitsForPromise ->
diff --git a/packages/language-json/LICENSE.md b/packages/language-json/LICENSE.md
index 2e97b1742..9805458c7 100644
--- a/packages/language-json/LICENSE.md
+++ b/packages/language-json/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-json/README.md b/packages/language-json/README.md
index c5153d96a..4964be004 100644
--- a/packages/language-json/README.md
+++ b/packages/language-json/README.md
@@ -1,7 +1,7 @@
-# JSON language support in Atom
+# JSON language support in Pulsar
 
-Adds syntax highlighting of JSON files in Atom.
+Adds syntax highlighting of JSON files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [JSON TextMate bundle](https://github.com/textmate/json.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [JSON TextMate bundle](https://github.com/textmate/json.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-json/grammars/json.cson b/packages/language-json/grammars/json.cson
index 7b1df2a5c..cdc6b3d9b 100644
--- a/packages/language-json/grammars/json.cson
+++ b/packages/language-json/grammars/json.cson
@@ -7,6 +7,7 @@
   'composer.lock'
   'geojson'
   'gltf'
+  'har'
   'htmlhintrc'
   'ipynb'
   'jscsrc'
diff --git a/packages/language-json/grammars/tree-sitter-json.cson b/packages/language-json/grammars/tree-sitter-json.cson
index 7381c84c7..db612feae 100644
--- a/packages/language-json/grammars/tree-sitter-json.cson
+++ b/packages/language-json/grammars/tree-sitter-json.cson
@@ -10,6 +10,7 @@ fileTypes: [
   'composer.lock'
   'geojson'
   'gltf'
+  'har'
   'htmlhintrc'
   'ipynb'
   'jscsrc'
diff --git a/packages/language-json/package-lock.json b/packages/language-json/package-lock.json
index 22fe15760..d5a50ee28 100644
--- a/packages/language-json/package-lock.json
+++ b/packages/language-json/package-lock.json
@@ -1,169 +1,34 @@
 {
   "name": "language-json",
   "version": "1.0.5",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
+  "packages": {
+    "": {
+      "name": "language-json",
+      "version": "1.0.5",
+      "license": "MIT",
+      "dependencies": {
+        "tree-sitter-json": "0.20.0"
+      },
+      "engines": {
+        "atom": "*",
+        "node": "*"
       }
     },
-    "coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "dev": true
+    "node_modules/nan": {
+      "version": "2.17.0",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.17.0.tgz",
+      "integrity": "sha512-2ZTgtl0nJsO0KQCjEpxcIr5D+Yv90plTitZt9JBfQvVJDS5seMl3FOvsh3+9CoYWXf/1l5OaZzzF6nDm4cagaQ=="
     },
-    "coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "requires": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
+    "node_modules/tree-sitter-json": {
+      "version": "0.20.0",
+      "resolved": "https://registry.npmjs.org/tree-sitter-json/-/tree-sitter-json-0.20.0.tgz",
+      "integrity": "sha512-PteOLH+Tx6Bz4ZA/d40/DbkiSXXRM/gKahhHI8hQ1lWNfFvdknnz9k3Mz84ol5srRyLboJ8wp8GSkhZ6ht9EGQ==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "nan": "^2.14.1"
       }
-    },
-    "concat-map": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
-    },
-    "fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
-    "glob": {
-      "version": "7.1.4",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.4.tgz",
-      "integrity": "sha512-hkLPepehmnKk41pUGm3sYxoFs/umurYfYJCerbXEyFIWcAzvpipAgVkBqqT9RBKMGjnq6kMuyYwha6csxbiM1A==",
-      "dev": true,
-      "requires": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.0.4",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
-      }
-    },
-    "ignore": {
-      "version": "3.3.10",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-      "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-      "dev": true
-    },
-    "inflight": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
-      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
-      "dev": true,
-      "requires": {
-        "once": "^1.3.0",
-        "wrappy": "1"
-      }
-    },
-    "inherits": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-      "dev": true
-    },
-    "minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
-      "dev": true,
-      "requires": {
-        "brace-expansion": "^1.1.7"
-      }
-    },
-    "minimist": {
-      "version": "0.0.10",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
-      "dev": true
-    },
-    "nan": {
-      "version": "2.14.0",
-      "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
-      "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg=="
-    },
-    "once": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
-      "dev": true,
-      "requires": {
-        "wrappy": "1"
-      }
-    },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
-    "path-is-absolute": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
-      "dev": true
-    },
-    "resolve": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true
-    },
-    "tree-sitter-json": {
-      "version": "0.15.1",
-      "resolved": "https://registry.npmjs.org/tree-sitter-json/-/tree-sitter-json-0.15.1.tgz",
-      "integrity": "sha512-zSbxzlZlMuWEQ/WhyjR+AoECf/v9/dlE+6+0uxNgU5fb5m4kGc9Y0+HKWxLWZ4yhZNBdwCIrUQwo/oaBdmyXPg==",
-      "requires": {
-        "nan": "^2.0.0"
-      }
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-less/LICENSE.md b/packages/language-less/LICENSE.md
index 6fb4f5004..233e837bf 100644
--- a/packages/language-less/LICENSE.md
+++ b/packages/language-less/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-less/README.md b/packages/language-less/README.md
index 270b5b942..97d2585bd 100644
--- a/packages/language-less/README.md
+++ b/packages/language-less/README.md
@@ -1,7 +1,7 @@
-# Less language support in Atom
+# Less language support in Pulsar
 
-Adds syntax highlighting to [Less](http://lesscss.org) files in Atom.
+Adds syntax highlighting to [Less](http://lesscss.org) files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Less TextMate bundle](https://github.com/textmate/less.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Less TextMate bundle](https://github.com/textmate/less.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-less/package-lock.json b/packages/language-less/package-lock.json
new file mode 100644
index 000000000..4bd81794b
--- /dev/null
+++ b/packages/language-less/package-lock.json
@@ -0,0 +1,878 @@
+{
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+      "integrity": "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==",
+      "deprecated": "Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.",
+      "dev": true,
+      "bin": {
+        "uuid": "bin/uuid"
+      }
+    },
+    "node_modules/verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha512-ZZKSmDAEFOijERBLkmYfJ+vmk3w+7hOLYDNkRCuRuMJGEmqYNCNLyBBFwWKVMhfwaEF3WOd0Zlw86U/WC/+nYw==",
+      "dev": true,
+      "engines": [
+        "node >=0.6.0"
+      ],
+      "dependencies": {
+        "assert-plus": "^1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "^1.2.0"
+      }
+    },
+    "node_modules/window-size": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.4.tgz",
+      "integrity": "sha512-2thx4pB0cV3h+Bw7QmMXcEbdmOzv9t0HFplJH/Lz6yu60hXYy5RT8rUu+wlIreVxWsGN20mo+MHeCSfUpQBwPw==",
+      "dev": true,
+      "bin": {
+        "window-size": "cli.js"
+      },
+      "engines": {
+        "node": ">= 0.10.0"
+      }
+    },
+    "node_modules/wrap-ansi": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+      "integrity": "sha512-vAaEaDM946gbNpH5pLVNR+vX2ht6n0Bt3GXwVB1AuAqZosOvHNF3P7wDnh8KLkSqgUh0uh77le7Owgoz+Z9XBw==",
+      "dev": true,
+      "dependencies": {
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "dev": true
+    },
+    "node_modules/y18n": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.2.tgz",
+      "integrity": "sha512-uGZHXkHnhF0XeeAPgnKfPv1bgKAYyVvmNL1xlKsPYZPaIHxGti2hHqvOCQv71XMsLxu1QjergkqogUnms5D3YQ==",
+      "dev": true
+    },
+    "node_modules/yargs": {
+      "version": "3.32.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.32.0.tgz",
+      "integrity": "sha512-ONJZiimStfZzhKamYvR/xvmgW3uEkAUFSP91y2caTEPhzF6uP2JfPiVZcq66b/YR0C3uitxSV7+T1x8p5bkmMg==",
+      "dev": true,
+      "dependencies": {
+        "camelcase": "^2.0.1",
+        "cliui": "^3.0.3",
+        "decamelize": "^1.1.1",
+        "os-locale": "^1.4.0",
+        "string-width": "^1.0.1",
+        "window-size": "^0.1.4",
+        "y18n": "^3.2.0"
+      }
+    }
+  }
+}
diff --git a/packages/language-make/LICENSE.md b/packages/language-make/LICENSE.md
index 70e8b192b..619c7ef35 100644
--- a/packages/language-make/LICENSE.md
+++ b/packages/language-make/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-make/README.md b/packages/language-make/README.md
index 29d78595e..b885cb77a 100644
--- a/packages/language-make/README.md
+++ b/packages/language-make/README.md
@@ -1,7 +1,7 @@
-# Make language support in Atom
+# Make language support in Pulsar
 
-Adds syntax highlighting to [Makefiles](https://www.gnu.org/software/make/manual/make.html) in Atom.
+Adds syntax highlighting to [Makefiles](https://www.gnu.org/software/make/manual/make.html) in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Make TextMate bundle](https://github.com/textmate/make.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Make TextMate bundle](https://github.com/textmate/make.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-make/package-lock.json b/packages/language-make/package-lock.json
new file mode 100644
index 000000000..5eee62f43
--- /dev/null
+++ b/packages/language-make/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-make",
+  "version": "0.23.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-make",
+      "version": "0.23.0",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-mustache/LICENSE.md b/packages/language-mustache/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/language-mustache/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/language-mustache/README.md b/packages/language-mustache/README.md
index b61a879e1..c210d16ef 100644
--- a/packages/language-mustache/README.md
+++ b/packages/language-mustache/README.md
@@ -1,5 +1,5 @@
-# Mustache/Handlebars support in Atom
+# Mustache/Handlebars support in Pulsar
 
-Adds syntax highlighting to [Mustache](http://mustache.github.io) and [Handlebars](http://handlebarsjs.com) files in Atom.
+Adds syntax highlighting to [Mustache](http://mustache.github.io) and [Handlebars](http://handlebarsjs.com) files in Pulsar.
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-mustache/package-lock.json b/packages/language-mustache/package-lock.json
new file mode 100644
index 000000000..b47c41f11
--- /dev/null
+++ b/packages/language-mustache/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-mustache",
+  "version": "0.14.5",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-mustache",
+      "version": "0.14.5",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-objective-c/LICENSE.md b/packages/language-objective-c/LICENSE.md
index 879747970..4c9c7e9ab 100644
--- a/packages/language-objective-c/LICENSE.md
+++ b/packages/language-objective-c/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-objective-c/README.md b/packages/language-objective-c/README.md
index a40a5f45c..d2526d507 100644
--- a/packages/language-objective-c/README.md
+++ b/packages/language-objective-c/README.md
@@ -1,7 +1,7 @@
-# Objective-C language support in Atom
+# Objective-C language support in Pulsar
 
-Adds syntax highlighting and snippets to Objective-C files in Atom.
+Adds syntax highlighting and snippets to Objective-C files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Objective-C TextMate bundle](https://github.com/textmate/objective-c.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Objective-C TextMate bundle](https://github.com/textmate/objective-c.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-objective-c/package-lock.json b/packages/language-objective-c/package-lock.json
new file mode 100644
index 000000000..0e55e9480
--- /dev/null
+++ b/packages/language-objective-c/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-objective-c",
+  "version": "0.16.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-objective-c",
+      "version": "0.16.0",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-perl/LICENSE.md b/packages/language-perl/LICENSE.md
index 92ca6b65a..5805ddd31 100644
--- a/packages/language-perl/LICENSE.md
+++ b/packages/language-perl/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-perl/README.md b/packages/language-perl/README.md
index cbcdeaccc..ecf70e99c 100644
--- a/packages/language-perl/README.md
+++ b/packages/language-perl/README.md
@@ -1,7 +1,7 @@
-# Perl language support in Atom
+# Perl language support in Pulsar
 
-Adds syntax highlighting and snippets to Perl files in Atom.
+Adds syntax highlighting and snippets to Perl files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Perl TextMate bundle](https://github.com/textmate/perl.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Perl TextMate bundle](https://github.com/textmate/perl.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-perl/package-lock.json b/packages/language-perl/package-lock.json
new file mode 100644
index 000000000..a2060a072
--- /dev/null
+++ b/packages/language-perl/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-perl",
+  "version": "0.38.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-perl",
+      "version": "0.38.1",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-php/LICENSE.md b/packages/language-php/LICENSE.md
index 85af29286..770faf1ee 100644
--- a/packages/language-php/LICENSE.md
+++ b/packages/language-php/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-php/README.md b/packages/language-php/README.md
index 67dbd185e..276fb6082 100644
--- a/packages/language-php/README.md
+++ b/packages/language-php/README.md
@@ -1,7 +1,7 @@
-# PHP language support in Atom
+# PHP language support in Pulsar
 
-Adds syntax highlighting and snippets to PHP files in Atom.
+Adds syntax highlighting and snippets to PHP files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [PHP TextMate bundle](https://github.com/textmate/php.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [PHP TextMate bundle](https://github.com/textmate/php.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-php/package-lock.json b/packages/language-php/package-lock.json
index 4a6caf65c..225aac2a2 100644
--- a/packages/language-php/package-lock.json
+++ b/packages/language-php/package-lock.json
@@ -1,156 +1,17 @@
 {
   "name": "language-php",
   "version": "0.48.1",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
+  "packages": {
+    "": {
+      "name": "language-php",
+      "version": "0.48.1",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
       }
-    },
-    "coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "dev": true
-    },
-    "coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "requires": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
-      }
-    },
-    "concat-map": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
-    },
-    "fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
-    "glob": {
-      "version": "7.1.5",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.5.tgz",
-      "integrity": "sha512-J9dlskqUXK1OeTOYBEn5s8aMukWMwWfs+rPTn/jn50Ux4MNXVhubL1wu/j2t+H4NVI+cXEcCaYellqaPVGXNqQ==",
-      "dev": true,
-      "requires": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.0.4",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
-      }
-    },
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-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-      "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-      "dev": true
-    },
-    "inflight": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
-      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
-      "dev": true,
-      "requires": {
-        "once": "^1.3.0",
-        "wrappy": "1"
-      }
-    },
-    "inherits": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
-      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
-      "dev": true
-    },
-    "minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
-      "dev": true,
-      "requires": {
-        "brace-expansion": "^1.1.7"
-      }
-    },
-    "minimist": {
-      "version": "0.0.10",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
-      "dev": true
-    },
-    "once": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
-      "dev": true,
-      "requires": {
-        "wrappy": "1"
-      }
-    },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
-    "path-is-absolute": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
-      "dev": true
-    },
-    "resolve": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-property-list/LICENSE.md b/packages/language-property-list/LICENSE.md
index 27ab7a737..0df051a0b 100644
--- a/packages/language-property-list/LICENSE.md
+++ b/packages/language-property-list/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-property-list/README.md b/packages/language-property-list/README.md
index 7978d7510..46feb1e09 100644
--- a/packages/language-property-list/README.md
+++ b/packages/language-property-list/README.md
@@ -1,9 +1,9 @@
-# Property list support in Atom
+# Property list support in Pulsar
 
 Adds syntax highlighting and snippets to [plist](https://en.wikipedia.org/wiki/Property_list)
-files in Atom.
+files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate)
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate)
 from the [Property List TextMate bundle](https://github.com/textmate/property-list.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a
diff --git a/packages/language-property-list/package-lock.json b/packages/language-property-list/package-lock.json
new file mode 100644
index 000000000..1d1928262
--- /dev/null
+++ b/packages/language-property-list/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-property-list",
+  "version": "0.9.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-property-list",
+      "version": "0.9.1",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-python/LICENSE.md b/packages/language-python/LICENSE.md
index 0d1f6bed4..828dc7795 100644
--- a/packages/language-python/LICENSE.md
+++ b/packages/language-python/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-python/README.md b/packages/language-python/README.md
index 87be7f06c..a0184bcc7 100644
--- a/packages/language-python/README.md
+++ b/packages/language-python/README.md
@@ -1,7 +1,7 @@
-# Python language support in Atom
+# Python language support in Pulsar
 
-Adds syntax highlighting and snippets to Python files in Atom.
+Adds syntax highlighting and snippets to Python files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Python TextMate bundle](https://github.com/textmate/python.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Python TextMate bundle](https://github.com/textmate/python.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-python/package-lock.json b/packages/language-python/package-lock.json
index d77eb13c1..2975c128d 100644
--- a/packages/language-python/package-lock.json
+++ b/packages/language-python/package-lock.json
@@ -1,188 +1,60 @@
 {
   "name": "language-python",
   "version": "0.53.6",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "atom-grammar-test": {
+  "packages": {
+    "": {
+      "name": "language-python",
+      "version": "0.53.6",
+      "license": "MIT",
+      "dependencies": {
+        "atom-grammar-test": "^0.6.4",
+        "tree-sitter-python": "0.19.0"
+      },
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    },
+    "node_modules/atom-grammar-test": {
       "version": "0.6.4",
       "resolved": "https://registry.npmjs.org/atom-grammar-test/-/atom-grammar-test-0.6.4.tgz",
       "integrity": "sha1-2KU1A9H+k5mX9Ji3SirDEARKfU4=",
-      "requires": {
+      "dependencies": {
         "chevrotain": "^0.18.0",
         "escape-string-regexp": "^1.0.5"
+      },
+      "engines": {
+        "atom": ">=1.0.0 <2.0.0"
       }
     },
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
-      }
-    },
-    "chevrotain": {
+    "node_modules/chevrotain": {
       "version": "0.18.0",
       "resolved": "https://registry.npmjs.org/chevrotain/-/chevrotain-0.18.0.tgz",
       "integrity": "sha1-sodxTjFZC64sXR4vYRZz7+xHnYA="
     },
-    "coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "dev": true
-    },
-    "coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "requires": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
-      }
-    },
-    "concat-map": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
-    },
-    "escape-string-regexp": {
+    "node_modules/escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
-      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
-    },
-    "fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
-    "glob": {
-      "version": "7.1.3",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
-      "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
-      "dev": true,
-      "requires": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.0.4",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
+      "engines": {
+        "node": ">=0.8.0"
       }
     },
-    "ignore": {
-      "version": "3.3.10",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-      "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-      "dev": true
-    },
-    "inflight": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
-      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
-      "dev": true,
-      "requires": {
-        "once": "^1.3.0",
-        "wrappy": "1"
-      }
-    },
-    "inherits": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-      "dev": true
-    },
-    "minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
-      "dev": true,
-      "requires": {
-        "brace-expansion": "^1.1.7"
-      }
-    },
-    "minimist": {
-      "version": "0.0.10",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
-      "dev": true
-    },
-    "nan": {
+    "node_modules/nan": {
       "version": "2.14.2",
       "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.2.tgz",
       "integrity": "sha512-M2ufzIiINKCuDfBSAUr1vWQ+vuVcA9kqx8JJUsbQi6yf1uGRyb7HfpdfUr5qLXf3B/t8dPvcjhKMmlfnP47EzQ=="
     },
-    "once": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
-      "dev": true,
-      "requires": {
-        "wrappy": "1"
+    "node_modules/tree-sitter-python": {
+      "version": "0.19.0",
+      "resolved": "https://registry.npmjs.org/tree-sitter-python/-/tree-sitter-python-0.19.0.tgz",
+      "integrity": "sha512-UAJV73zCE+2b+X8XQOyL6C+MxVUV8BH0TxcOwhfgaDh6F6g4Ub0SqWGF19C1MDrGi25JNnZ8xlsH0aqrasyS3w==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "nan": "^2.14.0"
       }
-    },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
-    "path-is-absolute": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
-      "dev": true
-    },
-    "resolve": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true
-    },
-    "tree-sitter-python": {
-      "version": "0.17.0",
-      "resolved": "https://registry.npmjs.org/tree-sitter-python/-/tree-sitter-python-0.17.0.tgz",
-      "integrity": "sha512-6HaqF/1GHB0/qrkcIxYqEELsQq6bXdQxx2KnGLZhoGn5ipbAibncSuQT9f8HYbmqLZ4dIGleQzsXreY1mx2lig==",
-      "requires": {
-        "nan": "^2.4.0"
-      }
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-ruby-on-rails/LICENSE.md b/packages/language-ruby-on-rails/LICENSE.md
index b44ce74cf..8d0a0ca27 100644
--- a/packages/language-ruby-on-rails/LICENSE.md
+++ b/packages/language-ruby-on-rails/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-ruby-on-rails/README.md b/packages/language-ruby-on-rails/README.md
index 57e8b07cd..3c0724a61 100644
--- a/packages/language-ruby-on-rails/README.md
+++ b/packages/language-ruby-on-rails/README.md
@@ -1,7 +1,7 @@
-# Ruby on Rails language support in Atom
+# Ruby on Rails language support in Pulsar
 
-Adds syntax highlighting and snippets to Rails files in Atom.
+Adds syntax highlighting and snippets to Rails files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Ruby on Rails TextMate bundle](https://github.com/drnic/ruby-on-rails-tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Ruby on Rails TextMate bundle](https://github.com/drnic/ruby-on-rails-tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-ruby-on-rails/package-lock.json b/packages/language-ruby-on-rails/package-lock.json
new file mode 100644
index 000000000..a07cf18ba
--- /dev/null
+++ b/packages/language-ruby-on-rails/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-ruby-on-rails",
+  "version": "0.25.3",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-ruby-on-rails",
+      "version": "0.25.3",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-ruby/.gitignore b/packages/language-ruby/.gitignore
index d5f19d89b..3c3629e64 100644
--- a/packages/language-ruby/.gitignore
+++ b/packages/language-ruby/.gitignore
@@ -1,2 +1 @@
 node_modules
-package-lock.json
diff --git a/packages/language-ruby/LICENSE.md b/packages/language-ruby/LICENSE.md
index 41db78a6e..5ecfcf07b 100644
--- a/packages/language-ruby/LICENSE.md
+++ b/packages/language-ruby/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-ruby/README.md b/packages/language-ruby/README.md
index ba2c5c334..48deb484a 100644
--- a/packages/language-ruby/README.md
+++ b/packages/language-ruby/README.md
@@ -1,7 +1,7 @@
-# Ruby language support in Atom
+# Ruby language support in Pulsar
 
-Adds syntax highlighting and snippets to Ruby files in Atom.
+Adds syntax highlighting and snippets to Ruby files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Ruby TextMate bundle](https://github.com/textmate/ruby.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Ruby TextMate bundle](https://github.com/textmate/ruby.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-ruby/package-lock.json b/packages/language-ruby/package-lock.json
new file mode 100644
index 000000000..db2900318
--- /dev/null
+++ b/packages/language-ruby/package-lock.json
@@ -0,0 +1,595 @@
+{
+  "name": "language-ruby",
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+      "version": "0.73.0",
+      "license": "MIT",
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+      },
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+      }
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+      "funding": [
+        {
+          "type": "github",
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+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
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+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ]
+    },
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+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/which-pm-runs/-/which-pm-runs-1.1.0.tgz",
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+      "engines": {
+        "node": ">=4"
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+    "node_modules/wide-align": {
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+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.5.tgz",
+      "integrity": "sha512-eDMORYaPNZ4sQIuuYPDHdQvf4gyCF9rEEV/yPxGfwPkRodwEgiMUUXTx/dex+Me0wxx53S+NgUHaP7y3MGlDmg==",
+      "dependencies": {
+        "string-width": "^1.0.2 || 2 || 3 || 4"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="
+    }
+  }
+}
diff --git a/packages/language-rust-bundled/package-lock.json b/packages/language-rust-bundled/package-lock.json
new file mode 100644
index 000000000..aae9d9971
--- /dev/null
+++ b/packages/language-rust-bundled/package-lock.json
@@ -0,0 +1,33 @@
+{
+  "name": "language-rust-bundled",
+  "version": "0.1.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-rust-bundled",
+      "version": "0.1.1",
+      "license": "MIT",
+      "dependencies": {
+        "tree-sitter-rust": "0.20.1"
+      },
+      "engines": {
+        "atom": ">=1.0.0 <2.0.0"
+      }
+    },
+    "node_modules/nan": {
+      "version": "2.17.0",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.17.0.tgz",
+      "integrity": "sha512-2ZTgtl0nJsO0KQCjEpxcIr5D+Yv90plTitZt9JBfQvVJDS5seMl3FOvsh3+9CoYWXf/1l5OaZzzF6nDm4cagaQ=="
+    },
+    "node_modules/tree-sitter-rust": {
+      "version": "0.20.1",
+      "resolved": "https://registry.npmjs.org/tree-sitter-rust/-/tree-sitter-rust-0.20.1.tgz",
+      "integrity": "sha512-du8yLJBnjzjynQDPlt4IhbHgGHq2o/hdUGrHuedyAd5008i3ghB6trDB805B9qXNPFJGNy8gY0kxQPak2zOsFw==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "nan": "^2.14.0"
+      }
+    }
+  }
+}
diff --git a/packages/language-sass/LICENSE.md b/packages/language-sass/LICENSE.md
index b8b973bc0..bf08545e3 100644
--- a/packages/language-sass/LICENSE.md
+++ b/packages/language-sass/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.E.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-sass/README.md b/packages/language-sass/README.md
index 04f7efec3..1fb296f14 100644
--- a/packages/language-sass/README.md
+++ b/packages/language-sass/README.md
@@ -1,7 +1,7 @@
-# Sass/SCSS language support in Atom
+# Sass/SCSS language support in Pulsar
 
-Adds syntax highlighting and snippets to Sass/SCSS files in Atom.
+Adds syntax highlighting and snippets to Sass/SCSS files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [Sass TextMate bundle](https://github.com/alexsancho/SASS.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [Sass TextMate bundle](https://github.com/alexsancho/SASS.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-sass/package-lock.json b/packages/language-sass/package-lock.json
index e03aab704..a23f330f7 100644
--- a/packages/language-sass/package-lock.json
+++ b/packages/language-sass/package-lock.json
@@ -1,162 +1,26 @@
 {
   "name": "language-sass",
   "version": "0.62.2",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
+  "packages": {
+    "": {
+      "name": "language-sass",
+      "version": "0.62.2",
+      "license": "MIT",
+      "devDependencies": {
+        "dedent": "^0.7.0"
+      },
+      "engines": {
+        "atom": "*",
+        "node": "*"
       }
     },
-    "coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "dev": true
-    },
-    "coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "requires": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
-      }
-    },
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-      "dev": true
-    },
-    "wrappy": {
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     }
   }
 }
diff --git a/packages/language-shellscript/LICENSE.md b/packages/language-shellscript/LICENSE.md
index abb1a5d9f..617ce6125 100644
--- a/packages/language-shellscript/LICENSE.md
+++ b/packages/language-shellscript/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-shellscript/README.md b/packages/language-shellscript/README.md
index 3b16a0510..2a398a22d 100644
--- a/packages/language-shellscript/README.md
+++ b/packages/language-shellscript/README.md
@@ -1,7 +1,7 @@
-# ShellScript language support in Atom
+# ShellScript language support in Pulsar
 
-Adds syntax highlighting and snippets to shell scripts in Atom.
+Adds syntax highlighting and snippets to shell scripts in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [ShellScript TextMate bundle](https://github.com/textmate/shellscript.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [ShellScript TextMate bundle](https://github.com/textmate/shellscript.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-shellscript/package-lock.json b/packages/language-shellscript/package-lock.json
index 3228072ae..e0b1a289e 100644
--- a/packages/language-shellscript/package-lock.json
+++ b/packages/language-shellscript/package-lock.json
@@ -1,170 +1,148 @@
 {
   "name": "language-shellscript",
   "version": "0.28.2",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "ansi-regex": {
+  "packages": {
+    "": {
+      "name": "language-shellscript",
+      "version": "0.28.2",
+      "license": "MIT",
+      "dependencies": {
+        "tree-sitter-bash": "0.19.0"
+      },
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    },
+    "node_modules/ansi-regex": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "engines": {
+        "node": ">=0.10.0"
+      }
     },
-    "aproba": {
+    "node_modules/aproba": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
       "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw=="
     },
-    "are-we-there-yet": {
+    "node_modules/are-we-there-yet": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
       "integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
-      "requires": {
+      "dependencies": {
         "delegates": "^1.0.0",
         "readable-stream": "^2.0.6"
       }
     },
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "bl": {
+    "node_modules/bl": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/bl/-/bl-3.0.0.tgz",
       "integrity": "sha512-EUAyP5UHU5hxF8BPT0LKW8gjYLhq1DQIcneOX/pL/m2Alo+OYDQAJlHq+yseMP50Os2nHXOSic6Ss3vSQeyf4A==",
-      "requires": {
-        "readable-stream": "^3.0.1"
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-          "version": "3.6.0",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
-          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
-          "requires": {
-            "inherits": "^2.0.3",
-            "string_decoder": "^1.1.1",
-            "util-deprecate": "^1.0.1"
-          }
-        }
+        "readable-stream": "^3.0.1"
       }
     },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
+    "node_modules/bl/node_modules/readable-stream": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+      "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "string_decoder": "^1.1.1",
+        "util-deprecate": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
       }
     },
-    "chownr": {
+    "node_modules/chownr": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz",
       "integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg=="
     },
-    "code-point-at": {
+    "node_modules/code-point-at": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
-      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
-    },
-    "coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "dev": true
-    },
-    "coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "requires": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
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-          "version": "1.0.4",
-          "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-          "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-          "dev": true
-        }
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "engines": {
+        "node": ">=0.10.0"
       }
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-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
-    },
-    "console-control-strings": {
+    "node_modules/console-control-strings": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
       "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4="
     },
-    "core-util-is": {
+    "node_modules/core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
     },
-    "decompress-response": {
+    "node_modules/decompress-response": {
       "version": "4.2.1",
       "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-4.2.1.tgz",
       "integrity": "sha512-jOSne2qbyE+/r8G1VU+G/82LBs2Fs4LAsTiLSHOCOMZQl2OKZ6i8i4IyHemTe+/yIXOtTcRQMzPcgyhoFlqPkw==",
-      "requires": {
+      "dependencies": {
         "mimic-response": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=8"
       }
     },
-    "deep-extend": {
+    "node_modules/deep-extend": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
-      "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA=="
+      "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==",
+      "engines": {
+        "node": ">=4.0.0"
+      }
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+    "node_modules/delegates": {
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       "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
       "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
     },
-    "detect-libc": {
+    "node_modules/detect-libc": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-1.0.3.tgz",
-      "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups="
+      "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=",
+      "bin": {
+        "detect-libc": "bin/detect-libc.js"
+      },
+      "engines": {
+        "node": ">=0.10"
+      }
     },
-    "end-of-stream": {
+    "node_modules/end-of-stream": {
       "version": "1.4.4",
       "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
       "integrity": "sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==",
-      "requires": {
+      "dependencies": {
         "once": "^1.4.0"
       }
     },
-    "expand-template": {
+    "node_modules/expand-template": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/expand-template/-/expand-template-2.0.3.tgz",
-      "integrity": "sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg=="
+      "integrity": "sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg==",
+      "engines": {
+        "node": ">=6"
+      }
     },
-    "fs-constants": {
+    "node_modules/fs-constants": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs-constants/-/fs-constants-1.0.0.tgz",
       "integrity": "sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow=="
     },
-    "fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
-    "gauge": {
+    "node_modules/gauge": {
       "version": "2.7.4",
       "resolved": "https://registry.npmjs.org/gauge/-/gauge-2.7.4.tgz",
       "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
-      "requires": {
+      "dependencies": {
         "aproba": "^1.0.3",
         "console-control-strings": "^1.0.0",
         "has-unicode": "^2.0.0",
@@ -175,184 +153,142 @@
         "wide-align": "^1.1.0"
       }
     },
-    "github-from-package": {
+    "node_modules/github-from-package": {
       "version": "0.0.0",
       "resolved": "https://registry.npmjs.org/github-from-package/-/github-from-package-0.0.0.tgz",
       "integrity": "sha1-l/tdlr/eiXMxPyDoKI75oWf6ZM4="
     },
-    "glob": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
-      "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
-      "dev": true,
-      "requires": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.0.4",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
-      }
-    },
-    "has-unicode": {
+    "node_modules/has-unicode": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
       "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk="
     },
-    "ignore": {
-      "version": "3.3.10",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-      "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-      "dev": true
-    },
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     },
-    "which-pm-runs": {
+    "node_modules/which-pm-runs": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/which-pm-runs/-/which-pm-runs-1.0.0.tgz",
       "integrity": "sha1-Zws6+8VS4LVd9rd4DKdGFfI60cs="
     },
-    "wide-align": {
+    "node_modules/wide-align": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
       "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
-      "requires": {
+      "dependencies": {
         "string-width": "^1.0.2 || 2"
       }
     },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
+    "node_modules/wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
diff --git a/packages/language-source/LICENSE.md b/packages/language-source/LICENSE.md
index 56eb8d37d..a35064114 100644
--- a/packages/language-source/LICENSE.md
+++ b/packages/language-source/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-source/README.md b/packages/language-source/README.md
index d77cb5945..80e3e596e 100644
--- a/packages/language-source/README.md
+++ b/packages/language-source/README.md
@@ -1,9 +1,9 @@
-# Source code support in Atom
+# Source code support in Pulsar
 
 Adds basic comment, indent, and outdent patterns used as a fallback by all
-source files in Atom.
+source files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate)
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate)
 from the [Source TextMate bundle](https://github.com/textmate/source.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a
diff --git a/packages/language-source/package-lock.json b/packages/language-source/package-lock.json
new file mode 100644
index 000000000..9500c36a9
--- /dev/null
+++ b/packages/language-source/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-source",
+  "version": "0.9.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-source",
+      "version": "0.9.0",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-sql/LICENSE.md b/packages/language-sql/LICENSE.md
index 80ebf26fd..725d574ec 100644
--- a/packages/language-sql/LICENSE.md
+++ b/packages/language-sql/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-sql/README.md b/packages/language-sql/README.md
index 8a6e3b88e..95a2ef588 100644
--- a/packages/language-sql/README.md
+++ b/packages/language-sql/README.md
@@ -1,7 +1,7 @@
-# SQL language support in Atom
+# SQL language support in Pulsar
 
-Adds syntax highlighting to SQL files in Atom.
+Adds syntax highlighting to SQL files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [SQL TextMate bundle](https://github.com/textmate/sql.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [SQL TextMate bundle](https://github.com/textmate/sql.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-sql/package-lock.json b/packages/language-sql/package-lock.json
new file mode 100644
index 000000000..dcf2229b9
--- /dev/null
+++ b/packages/language-sql/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-sql",
+  "version": "0.25.10",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-sql",
+      "version": "0.25.10",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-text/LICENSE.md b/packages/language-text/LICENSE.md
index 2061fa261..686b614a6 100644
--- a/packages/language-text/LICENSE.md
+++ b/packages/language-text/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-text/README.md b/packages/language-text/README.md
index 4a3134a8f..9454da049 100644
--- a/packages/language-text/README.md
+++ b/packages/language-text/README.md
@@ -1,8 +1,8 @@
-# Plain text support in Atom
+# Plain text support in Pulsar
 
-Grammar and snippets for plain text files in Atom.
+Grammar and snippets for plain text files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate)
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate)
 from the [Text TextMate bundle](https://github.com/textmate/text.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a
diff --git a/packages/language-text/package-lock.json b/packages/language-text/package-lock.json
new file mode 100644
index 000000000..39be3c969
--- /dev/null
+++ b/packages/language-text/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-text",
+  "version": "0.7.4",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-text",
+      "version": "0.7.4",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-todo/LICENSE.md b/packages/language-todo/LICENSE.md
index f61f575aa..e8f79fab4 100644
--- a/packages/language-todo/LICENSE.md
+++ b/packages/language-todo/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-todo/README.md b/packages/language-todo/README.md
index 9e0700f70..95c0b62cc 100644
--- a/packages/language-todo/README.md
+++ b/packages/language-todo/README.md
@@ -1,8 +1,8 @@
-# TODO support in Atom
+# TODO support in Pulsar
 
 Adds syntax highlighting to `TODO`, `FIXME`, `CHANGED`, `XXX`, `IDEA`, `HACK`, `NOTE`, `REVIEW`, `NB`, `BUG`, `QUESTION`, `COMBAK`, `TEMP`, `DEBUG`, `OPTIMIZE`, and `WARNING` in comments
-and text in Atom.
+and text in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [TODO TextMate bundle](https://github.com/textmate/todo.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [TODO TextMate bundle](https://github.com/textmate/todo.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-todo/package-lock.json b/packages/language-todo/package-lock.json
new file mode 100644
index 000000000..b56159b49
--- /dev/null
+++ b/packages/language-todo/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-todo",
+  "version": "0.29.4",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-todo",
+      "version": "0.29.4",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-toml/LICENSE.md b/packages/language-toml/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/language-toml/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/language-toml/README.md b/packages/language-toml/README.md
index 8de229dcc..3064403f0 100644
--- a/packages/language-toml/README.md
+++ b/packages/language-toml/README.md
@@ -1,5 +1,5 @@
-# TOML language support in Atom
+# TOML language support in Pulsar
 
-Adds syntax highlighting for [TOML](https://github.com/toml-lang/toml) in Atom.
+Adds syntax highlighting for [TOML](https://github.com/toml-lang/toml) in Pulsar.
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-toml/package-lock.json b/packages/language-toml/package-lock.json
index 218f1c288..e4fde8191 100644
--- a/packages/language-toml/package-lock.json
+++ b/packages/language-toml/package-lock.json
@@ -1,156 +1,16 @@
 {
   "name": "language-toml",
   "version": "0.20.0",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "balanced-match": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
-    },
-    "brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "requires": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
+  "packages": {
+    "": {
+      "name": "language-toml",
+      "version": "0.20.0",
+      "license": "MIT",
+      "engines": {
+        "atom": "*"
       }
-    },
-    "coffee-script": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.11.1.tgz",
-      "integrity": "sha1-vxxHrWREOg2V0S3ysUfMCk2q1uk=",
-      "dev": true
-    },
-    "coffeelint": {
-      "version": "1.16.2",
-      "resolved": "https://registry.npmjs.org/coffeelint/-/coffeelint-1.16.2.tgz",
-      "integrity": "sha512-6mzgOo4zb17WfdrSui/cSUEgQ0AQkW3gXDht+6lHkfkqGUtSYKwGdGcXsDfAyuScVzTlTtKdfwkAlJWfqul7zg==",
-      "dev": true,
-      "requires": {
-        "coffee-script": "~1.11.0",
-        "glob": "^7.0.6",
-        "ignore": "^3.0.9",
-        "optimist": "^0.6.1",
-        "resolve": "^0.6.3",
-        "strip-json-comments": "^1.0.2"
-      }
-    },
-    "concat-map": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
-    },
-    "fs.realpath": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
-    },
-    "glob": {
-      "version": "7.1.3",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
-      "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
-      "dev": true,
-      "requires": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.0.4",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
-      }
-    },
-    "ignore": {
-      "version": "3.3.10",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.10.tgz",
-      "integrity": "sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==",
-      "dev": true
-    },
-    "inflight": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
-      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
-      "dev": true,
-      "requires": {
-        "once": "^1.3.0",
-        "wrappy": "1"
-      }
-    },
-    "inherits": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-      "dev": true
-    },
-    "minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
-      "dev": true,
-      "requires": {
-        "brace-expansion": "^1.1.7"
-      }
-    },
-    "minimist": {
-      "version": "0.0.10",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-      "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
-      "dev": true
-    },
-    "once": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
-      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
-      "dev": true,
-      "requires": {
-        "wrappy": "1"
-      }
-    },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "dev": true,
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      }
-    },
-    "path-is-absolute": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
-      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
-      "dev": true
-    },
-    "resolve": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-0.6.3.tgz",
-      "integrity": "sha1-3ZV5gufnNt699TtYpN2RdUV13UY=",
-      "dev": true
-    },
-    "strip-json-comments": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
-      "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
-      "dev": true
-    },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
     }
   }
 }
diff --git a/packages/language-typescript/LICENSE.md b/packages/language-typescript/LICENSE.md
index 73b813ab7..2cb4eecaa 100644
--- a/packages/language-typescript/LICENSE.md
+++ b/packages/language-typescript/LICENSE.md
@@ -1,25 +1,25 @@
-Copyright (c) Microsoft Corporation
+MIT License
 
-Copyright (c) 2017 GitHub Inc.
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) Microsoft Corporation, copyright (c) 2017 GitHub Inc.
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-typescript/README.md b/packages/language-typescript/README.md
index e773b3cdf..6fbb75a6c 100644
--- a/packages/language-typescript/README.md
+++ b/packages/language-typescript/README.md
@@ -1,5 +1,5 @@
-# TypeScript language support in Atom
+# TypeScript language support in Pulsar
 
-Adds syntax highlighting and snippets for TypeScript in Atom.
+Adds syntax highlighting and snippets for TypeScript in Pulsar.
 
 The grammar is the [Microsoft TypeScript TextMate grammar](https://github.com/Microsoft/TypeScript-TmLanguage) and copied here on a semi-regular basis.  Any issues relating to syntax highlighting are likely to be there.
diff --git a/packages/language-typescript/package-lock.json b/packages/language-typescript/package-lock.json
index 63da03d99..690d6e431 100644
--- a/packages/language-typescript/package-lock.json
+++ b/packages/language-typescript/package-lock.json
@@ -1,19 +1,32 @@
 {
   "name": "language-typescript",
-  "version": "0.6.3",
-  "lockfileVersion": 1,
+  "version": "0.6.4",
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "nan": {
+  "packages": {
+    "": {
+      "name": "language-typescript",
+      "version": "0.6.4",
+      "license": "MIT",
+      "dependencies": {
+        "tree-sitter-typescript": "0.20.1"
+      },
+      "engines": {
+        "atom": ">=1.19.1",
+        "node": "*"
+      }
+    },
+    "node_modules/nan": {
       "version": "2.14.0",
       "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
       "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg=="
     },
-    "tree-sitter-typescript": {
-      "version": "0.16.1",
-      "resolved": "https://registry.npmjs.org/tree-sitter-typescript/-/tree-sitter-typescript-0.16.1.tgz",
-      "integrity": "sha512-jyU5yl4W6JPn66v2YbzaO1ClDcdDnj+7YQNZz3STgEiUooSjpWI1Ucgw+S/qEGbf0fMXsC0fucpP+/M1uc9ubw==",
-      "requires": {
+    "node_modules/tree-sitter-typescript": {
+      "version": "0.20.1",
+      "resolved": "https://registry.npmjs.org/tree-sitter-typescript/-/tree-sitter-typescript-0.20.1.tgz",
+      "integrity": "sha512-wqpnhdVYX26ATNXeZtprib4+mF2GlYQB1cjRPibYGxDRiugx5OfjWwLE4qPPxEGdp2ZLSmZVesGUjLWzfKo6rA==",
+      "hasInstallScript": true,
+      "dependencies": {
         "nan": "^2.14.0"
       }
     }
diff --git a/packages/language-xml/LICENSE.md b/packages/language-xml/LICENSE.md
index 095130ec4..76235166e 100644
--- a/packages/language-xml/LICENSE.md
+++ b/packages/language-xml/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE..
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-xml/README.md b/packages/language-xml/README.md
index 63c62f8d8..94be3b2ff 100644
--- a/packages/language-xml/README.md
+++ b/packages/language-xml/README.md
@@ -1,7 +1,7 @@
-# XML language support in Atom
+# XML language support in Pulsar
 
-Adds syntax highlighting and snippets to XML files in Atom.
+Adds syntax highlighting and snippets to XML files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [XML TextMate bundle](https://github.com/textmate/xml.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [XML TextMate bundle](https://github.com/textmate/xml.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-xml/package-lock.json b/packages/language-xml/package-lock.json
new file mode 100644
index 000000000..b21e50bcf
--- /dev/null
+++ b/packages/language-xml/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-xml",
+  "version": "0.35.3",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-xml",
+      "version": "0.35.3",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/language-yaml/LICENSE.md b/packages/language-yaml/LICENSE.md
index f7e6a30a0..765bb5b5c 100644
--- a/packages/language-yaml/LICENSE.md
+++ b/packages/language-yaml/LICENSE.md
@@ -1,23 +1,25 @@
-Copyright (c) 2014 GitHub Inc.
+MIT License
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
+Copyright (c) 2022 Pulsar-Edit
+Original work copyright (c) 2014 GitHub Inc.
 
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE..
 
 --------------------------------------------------------------------
 
diff --git a/packages/language-yaml/README.md b/packages/language-yaml/README.md
index c615e999b..d04351a9d 100644
--- a/packages/language-yaml/README.md
+++ b/packages/language-yaml/README.md
@@ -1,7 +1,7 @@
-# YAML language support in Atom
+# YAML language support in Pulsar
 
-Adds syntax highlighting to YAML files in Atom.
+Adds syntax highlighting to YAML files in Pulsar.
 
-Originally [converted](http://flight-manual.atom.io/hacking-atom/sections/converting-from-textmate) from the [YAML TextMate bundle](https://github.com/textmate/yaml.tmbundle).
+Originally [converted](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#converting-from-textmate) from the [YAML TextMate bundle](https://github.com/textmate/yaml.tmbundle).
 
 Contributions are greatly appreciated. Please fork this repository and open a pull request to add snippets, make grammar tweaks, etc.
diff --git a/packages/language-yaml/package-lock.json b/packages/language-yaml/package-lock.json
new file mode 100644
index 000000000..26168f33e
--- /dev/null
+++ b/packages/language-yaml/package-lock.json
@@ -0,0 +1,17 @@
+{
+  "name": "language-yaml",
+  "version": "0.32.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "language-yaml",
+      "version": "0.32.0",
+      "license": "MIT",
+      "engines": {
+        "atom": "*",
+        "node": "*"
+      }
+    }
+  }
+}
diff --git a/packages/line-ending-selector/LICENSE.md b/packages/line-ending-selector/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/line-ending-selector/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/line-ending-selector/README.md b/packages/line-ending-selector/README.md
index 4ebb2ecde..3a6f9cf1a 100644
--- a/packages/line-ending-selector/README.md
+++ b/packages/line-ending-selector/README.md
@@ -2,7 +2,7 @@
 
 ![status bar tile](https://cloud.githubusercontent.com/assets/1305617/9274149/6b317568-4293-11e5-83ba-614a6c0d9890.png)
 
-This is an [Atom](https://atom.io) package that displays the current line ending type of a file: `CRLF` (Windows), `LF` (Unix), or `Mixed` (both). It also lets you change the line ending of a file.
+This is an [Pulsar](https://pulsar-edit.dev) package that displays the current line ending type of a file: `CRLF` (Windows), `LF` (Unix), or `Mixed` (both). It also lets you change the line ending of a file.
 
 ## To Use
 
@@ -21,7 +21,7 @@ You can click the line ending in the status-bar to open a modal with the line en
 
 **Note:** Because the `CR` line ending style is not used in any modern operating system, this package only supports converting *from* `CR` line endings not to it.
 
-### Atom Commands
+### Pulsar Commands
 
 You can also change a file's line endings by using or <kbd>cmd-shift-P</kbd> searching for these commands:
 
diff --git a/packages/line-ending-selector/package-lock.json b/packages/line-ending-selector/package-lock.json
new file mode 100644
index 000000000..0673e3fb0
--- /dev/null
+++ b/packages/line-ending-selector/package-lock.json
@@ -0,0 +1,52 @@
+{
+  "name": "line-ending-selector",
+  "version": "0.7.7",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "line-ending-selector",
+      "version": "0.7.7",
+      "license": "MIT",
+      "dependencies": {
+        "atom-select-list": "^0.7.0",
+        "underscore-plus": "^1.7.0"
+      },
+      "engines": {
+        "atom": "^1.0.0"
+      }
+    },
+    "node_modules/atom-select-list": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/atom-select-list/-/atom-select-list-0.7.2.tgz",
+      "integrity": "sha512-a707OB1DhLGjzqtFrtMQKH7BBxFuCh8UBoUWxgFOrLrSwVh3g+/TlVPVDOz12+U0mDu3mIrnYLqQyhywQOTxhw==",
+      "dependencies": {
+        "etch": "^0.12.6",
+        "fuzzaldrin": "^2.1.0"
+      }
+    },
+    "node_modules/etch": {
+      "version": "0.12.8",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.12.8.tgz",
+      "integrity": "sha512-dFLRe4wLroVtwzyy1vGlE3BSDZHiL0kZME5XgNGzZIULcYTvVno8vbiIleAesoKJmwWaxDTzG+4eppg2zk14JQ=="
+    },
+    "node_modules/fuzzaldrin": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/fuzzaldrin/-/fuzzaldrin-2.1.0.tgz",
+      "integrity": "sha512-zgllBYwfHR5P3CncJiGbGVPpa3iFYW1yuPaIv8DiTVRrcg5/6uETNL5zvIoKflG1aifXVUZTlIroDehw4WygGA=="
+    },
+    "node_modules/underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    }
+  }
+}
diff --git a/packages/line-ending-selector/spec/line-ending-selector-spec.js b/packages/line-ending-selector/spec/line-ending-selector-spec.js
index 0bf3964fa..97e02af75 100644
--- a/packages/line-ending-selector/spec/line-ending-selector-spec.js
+++ b/packages/line-ending-selector/spec/line-ending-selector-spec.js
@@ -1,5 +1,6 @@
 const helpers = require('../lib/helpers');
 const { TextEditor } = require('atom');
+const path = require('path');
 
 describe('line ending selector', () => {
   let lineEndingTile;
@@ -30,7 +31,7 @@ describe('line ending selector', () => {
 
     beforeEach(() => {
       waitsForPromise(() => {
-        return atom.workspace.open('mixed-endings.md').then(e => {
+        return atom.workspace.open(path.join(__dirname, 'fixtures', 'mixed-endings.md')).then(e => {
           editor = e;
           editorElement = atom.views.getView(editor);
           jasmine.attachToDOM(editorElement);
@@ -143,7 +144,7 @@ describe('line ending selector', () => {
     describe('when a file is opened that contains only CRLF line endings', () => {
       it('displays "CRLF" as the line ending', () => {
         waitsFor(done => {
-          atom.workspace.open('windows-endings.md').then(() => {
+          atom.workspace.open(path.join(__dirname, 'fixtures', 'windows-endings.md')).then(() => {
             lineEndingTile.onDidChange(() => {
               expect(lineEndingTile.element.textContent).toBe('CRLF');
               done();
@@ -156,7 +157,7 @@ describe('line ending selector', () => {
     describe('when a file is opened that contains only LF line endings', () => {
       it('displays "LF" as the line ending', () => {
         waitsFor(done => {
-          atom.workspace.open('unix-endings.md').then(editor => {
+          atom.workspace.open(path.join(__dirname, 'fixtures', 'unix-endings.md')).then(editor => {
             lineEndingTile.onDidChange(() => {
               expect(lineEndingTile.element.textContent).toBe('LF');
               expect(editor.getBuffer().getPreferredLineEnding()).toBe(null);
@@ -170,7 +171,7 @@ describe('line ending selector', () => {
     describe('when a file is opened that contains mixed line endings', () => {
       it('displays "Mixed" as the line ending', () => {
         waitsFor(done => {
-          atom.workspace.open('mixed-endings.md').then(() => {
+          atom.workspace.open(path.join(__dirname, 'fixtures', 'mixed-endings.md')).then(() => {
             lineEndingTile.onDidChange(() => {
               expect(lineEndingTile.element.textContent).toBe('Mixed');
               done();
@@ -188,7 +189,7 @@ describe('line ending selector', () => {
 
         waitsFor(done =>
           atom.workspace
-            .open('unix-endings.md')
+            .open(path.join(__dirname, 'fixtures', 'unix-endings.md'))
             .then(() => lineEndingTile.onDidChange(done))
         );
       });
@@ -274,7 +275,7 @@ describe('line ending selector', () => {
     describe('closing the last text editor', () => {
       it('displays no line ending in the status bar', () => {
         waitsForPromise(() => {
-          return atom.workspace.open('unix-endings.md').then(() => {
+          return atom.workspace.open(path.join(__dirname, 'fixtures', 'unix-endings.md')).then(() => {
             atom.workspace.getActivePane().destroy();
             expect(lineEndingTile.element.textContent).toBe('');
           });
@@ -287,7 +288,7 @@ describe('line ending selector', () => {
 
       beforeEach(() => {
         waitsFor(done => {
-          atom.workspace.open('unix-endings.md').then(e => {
+          atom.workspace.open(path.join(__dirname, 'fixtures', 'unix-endings.md')).then(e => {
             editor = e;
             lineEndingTile.onDidChange(done);
           });
diff --git a/packages/link/LICENSE.md b/packages/link/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/link/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/link/README.md b/packages/link/README.md
index b7ae6fae2..0dc7dc4b1 100644
--- a/packages/link/README.md
+++ b/packages/link/README.md
@@ -8,4 +8,4 @@ Opens http(s) links under the cursor.
 |-------|--------|-----------|------------------|------------------|--------------------|
 |`link:open`|`atom-text-editor`|Opens the http(s) link under the cursor||<kbd>ctrl-shift-o</kbd>||
 
-Custom keybindings can be added by referencing the above commands.  To learn more, visit the [Using Atom: Basic Customization](http://flight-manual.atom.io/using-atom/sections/basic-customization/#customizing-keybindings) or [Behind Atom: Keymaps In-Depth](http://flight-manual.atom.io/behind-atom/sections/keymaps-in-depth) sections of the Atom Flight Manual.
+Custom keybindings can be added by referencing the above commands.  To learn more, visit the [Using Pulsar: Basic Customization](https://pulsar-edit.dev/docs/launch-manual/sections/using-pulsar/#basic-customization) or [Behind Pulsar: Keymaps In-Depth](https://pulsar-edit.dev/docs/launch-manual/sections/behind-pulsar#keymaps-in-depth) sections of the Pulsar documentation.
diff --git a/packages/link/package-lock.json b/packages/link/package-lock.json
new file mode 100644
index 000000000..cf9a2b5f7
--- /dev/null
+++ b/packages/link/package-lock.json
@@ -0,0 +1,32 @@
+{
+  "name": "link",
+  "version": "0.31.6",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "link",
+      "version": "0.31.6",
+      "license": "MIT",
+      "dependencies": {
+        "underscore-plus": "^1.7.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    }
+  }
+}
diff --git a/packages/markdown-preview/.gitignore b/packages/markdown-preview/.gitignore
new file mode 100644
index 000000000..93f136199
--- /dev/null
+++ b/packages/markdown-preview/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+npm-debug.log
diff --git a/packages/markdown-preview/README.md b/packages/markdown-preview/README.md
new file mode 100644
index 000000000..841682f77
--- /dev/null
+++ b/packages/markdown-preview/README.md
@@ -0,0 +1,21 @@
+# Markdown Preview package
+
+Show the rendered HTML markdown to the right of the current editor using <kbd>ctrl-shift-m</kbd>.
+
+It is currently enabled for `.markdown`, `.md`, `.mdown`, `.mkd`, `.mkdown`, `.ron`, and `.txt` files.
+
+![markdown-preview](https://cloud.githubusercontent.com/assets/378023/10013086/24cad23e-6149-11e5-90e6-663009210218.png)
+
+## Customize
+
+By default Markdown Preview uses the colors of the active syntax theme. Enable `Use GitHub.com style` in the __package settings__ to make it look closer to how markdown files get rendered on github.com.
+
+![markdown-preview GitHub style](https://cloud.githubusercontent.com/assets/378023/10013087/24ccc7ec-6149-11e5-97ea-53a842a715ea.png)
+
+To customize even further, the styling can be overridden in your `styles.less` file. For example:
+
+```css
+.markdown-preview.markdown-preview {
+  background-color: #444;
+}
+```
diff --git a/packages/markdown-preview/assets/hr.png b/packages/markdown-preview/assets/hr.png
new file mode 100644
index 000000000..3e0e9c90b
Binary files /dev/null and b/packages/markdown-preview/assets/hr.png differ
diff --git a/packages/markdown-preview/assets/primer-markdown.less b/packages/markdown-preview/assets/primer-markdown.less
new file mode 100644
index 000000000..cea32ad47
--- /dev/null
+++ b/packages/markdown-preview/assets/primer-markdown.less
@@ -0,0 +1,448 @@
+// All of our block level items should have the same margin
+@margin: 16px;
+
+// This is styling for generic markdownized text. Anything you put in a
+// container with .markdown-body on it should render generally well. It also
+// includes some GitHub Flavored Markdown specific styling (like @mentions)
+.markdown-body {
+  overflow: hidden;
+  font-family: "Helvetica Neue", Helvetica, "Segoe UI", Arial, freesans, sans-serif;
+  font-size: 16px;
+  line-height: 1.6;
+  word-wrap: break-word;
+
+  > *:first-child {
+    margin-top: 0 !important;
+  }
+
+  > *:last-child {
+    margin-bottom: 0 !important;
+  }
+
+  // Anchors like <a name="examples">. These sometimes end up wrapped around
+  // text when users mistakenly forget to close the tag or use self-closing tag
+  // syntax. We don't want them to appear like links.
+  // FIXME: a:not(:link):not(:visited) would be a little clearer here (and
+  // possibly faster to match), but it breaks styling of <a href> elements due
+  // to https://bugs.webkit.org/show_bug.cgi?id=142737.
+  a:not([href]) {
+    color: inherit;
+    text-decoration: none;
+  }
+
+  // Link Colors
+  .absent {
+    color: #c00;
+  }
+
+  .anchor {
+    position: absolute;
+    top: 0;
+    left: 0;
+    display: block;
+    padding-right: 6px;
+    padding-left: 30px;
+    margin-left: -30px;
+
+    &:focus {
+      outline: none;
+    }
+  }
+
+  // Headings
+  h1, h2, h3, h4, h5, h6 {
+    position: relative;
+    margin-top: 1em;
+    margin-bottom: @margin;
+    font-weight: bold;
+    line-height: 1.4;
+
+    .octicon-link {
+      display: none;
+      color: #000;
+      vertical-align: middle;
+    }
+
+    &:hover .anchor {
+      padding-left: 8px;
+      margin-left: -30px;
+      text-decoration: none;
+
+      .octicon-link {
+        display: inline-block;
+      }
+    }
+
+    tt,
+    code {
+      font-size: inherit;
+    }
+  }
+
+  h1 {
+    padding-bottom: 0.3em;
+    font-size: 2.25em;
+    line-height: 1.2;
+    border-bottom: 1px solid #eee;
+
+    .anchor {
+      line-height: 1;
+    }
+  }
+
+  h2 {
+    padding-bottom: 0.3em;
+    font-size: 1.75em;
+    line-height: 1.225;
+    border-bottom: 1px solid #eee;
+
+    .anchor {
+      line-height: 1;
+    }
+  }
+
+  h3 {
+    font-size: 1.5em;
+    line-height: 1.43;
+
+    .anchor {
+      line-height: 1.2;
+    }
+  }
+
+  h4 {
+    font-size: 1.25em;
+
+    .anchor {
+      line-height: 1.2;
+    }
+  }
+
+  h5 {
+    font-size: 1em;
+
+    .anchor {
+      line-height: 1.1;
+    }
+  }
+
+  h6 {
+    font-size: 1em;
+    color: #777;
+
+    .anchor {
+      line-height: 1.1;
+    }
+  }
+
+  p,
+  blockquote,
+  ul, ol, dl,
+  table,
+  pre {
+    margin-top: 0;
+    margin-bottom: @margin;
+  }
+
+  hr {
+    height: 4px;
+    padding: 0;
+    margin: @margin 0;
+    background-color: #e7e7e7;
+    border: 0 none;
+  }
+
+  // Lists, Blockquotes & Such
+  ul,
+  ol {
+    padding-left: 2em;
+
+    &.no-list {
+      padding: 0;
+      list-style-type: none;
+    }
+  }
+
+  // Did someone complain about list spacing? Encourage them
+  // to create the spacing with their markdown formatting.
+  // List behavior should be controled by the markup, not the css.
+  //
+  // For lists with padding between items, use blank
+  // lines between items. This will generate paragraphs with
+  // padding to space things out.
+  //
+  // - item
+  //
+  // - item
+  //
+  // - item
+  //
+  // For list without padding, don't use blank lines.
+  //
+  // - item
+  // - item
+  // - item
+  //
+  // Modifying the css to emulate these behaviors merely brakes
+  // one case in the process of solving another. Don't change
+  // this unless it's really really a bug.
+  ul ul,
+  ul ol,
+  ol ol,
+  ol ul {
+    margin-top: 0;
+    margin-bottom: 0;
+  }
+
+  li > p {
+    margin-top: @margin;
+  }
+
+  dl {
+    padding: 0;
+  }
+
+  dl dt {
+    padding: 0;
+    margin-top: @margin;
+    font-size: 1em;
+    font-style: italic;
+    font-weight: bold;
+  }
+
+  dl dd {
+    padding: 0 @margin;
+    margin-bottom: @margin;
+  }
+
+  blockquote {
+    padding: 0 15px;
+    color: #777;
+    border-left: 4px solid #ddd;
+
+    > :first-child {
+      margin-top: 0;
+    }
+
+    > :last-child {
+      margin-bottom: 0;
+    }
+  }
+
+  // Tables
+  table {
+    display: block;
+    width: 100%;
+    overflow: auto;
+    word-break: normal;
+    word-break: keep-all; // For Firefox to horizontally scroll wider tables.
+
+    th {
+      font-weight: bold;
+    }
+
+    th, td {
+      padding: 6px 13px;
+      border: 1px solid #ddd;
+    }
+
+    tr {
+      background-color: #fff;
+      border-top: 1px solid #ccc;
+
+      &:nth-child(2n) {
+        background-color: #f8f8f8;
+      }
+    }
+  }
+
+  // Images & Stuff
+  img {
+    max-width: 100%;
+    -moz-box-sizing: border-box;
+    box-sizing: border-box;
+  }
+
+  .emoji {
+    max-width: none;
+  }
+
+  // Gollum Image Tags
+
+  // Framed
+  span.frame {
+    display: block;
+    overflow: hidden;
+
+    & > span {
+      display: block;
+      float: left;
+      width: auto;
+      padding: 7px;
+      margin: 13px 0 0;
+      overflow: hidden;
+      border: 1px solid #ddd;
+    }
+
+    span img {
+      display: block;
+      float: left;
+    }
+
+    span span {
+      display: block;
+      padding: 5px 0 0;
+      clear: both;
+      color: #333;
+    }
+  }
+
+  span.align-center {
+    display: block;
+    overflow: hidden;
+    clear: both;
+
+    & > span {
+      display: block;
+      margin: 13px auto 0;
+      overflow: hidden;
+      text-align: center;
+    }
+
+    span img {
+      margin: 0 auto;
+      text-align: center;
+    }
+  }
+
+  span.align-right {
+    display: block;
+    overflow: hidden;
+    clear: both;
+
+    & > span {
+      display: block;
+      margin: 13px 0 0;
+      overflow: hidden;
+      text-align: right;
+    }
+
+    span img {
+      margin: 0;
+      text-align: right;
+    }
+  }
+
+  span.float-left {
+    display: block;
+    float: left;
+    margin-right: 13px;
+    overflow: hidden;
+
+    span {
+      margin: 13px 0 0;
+    }
+  }
+
+  span.float-right {
+    display: block;
+    float: right;
+    margin-left: 13px;
+    overflow: hidden;
+
+    & > span {
+      display: block;
+      margin: 13px auto 0;
+      overflow: hidden;
+      text-align: right;
+    }
+  }
+
+  // Inline code snippets
+  code,
+  tt {
+    padding: 0;
+    padding-top: 0.2em;
+    padding-bottom: 0.2em;
+    margin: 0;
+    font-size: 85%;
+    background-color: rgba(0,0,0,0.04);
+    border-radius: 3px; // don't add padding, gives scrollbars
+
+    &:before,
+    &:after {
+      letter-spacing: -0.2em; // this creates padding
+      content: "\00a0";
+    }
+
+    br { display: none; }
+  }
+
+  del code { text-decoration: inherit; }
+
+  // Code tags within code blocks (<pre>s)
+  pre > code {
+    padding: 0;
+    margin: 0;
+    font-size: 100%;
+    word-break: normal;
+    white-space: pre;
+    background: transparent;
+    border: 0;
+  }
+
+  .highlight {
+    margin-bottom: @margin;
+  }
+
+  .highlight pre,
+  pre {
+    padding: @margin;
+    overflow: auto;
+    font-size: 85%;
+    line-height: 1.45;
+    background-color: #f7f7f7;
+    border-radius: 3px;
+  }
+
+  .highlight pre {
+    margin-bottom: 0;
+    word-break: normal;
+  }
+
+  pre {
+    word-wrap: normal;
+  }
+
+  pre code,
+  pre tt {
+    display: inline;
+    max-width: initial;
+    padding: 0;
+    margin: 0;
+    overflow: initial;
+    line-height: inherit;
+    word-wrap: normal;
+    background-color: transparent;
+    border: 0;
+
+    &:before,
+    &:after {
+      content: normal;
+    }
+  }
+
+  kbd {
+    display: inline-block;
+    padding: 3px 5px;
+    font-size: 11px;
+    line-height: 10px;
+    color: #555;
+    vertical-align: middle;
+    background-color: #fcfcfc;
+    border: solid 1px #ccc;
+    border-bottom-color: #bbb;
+    border-radius: 3px;
+    box-shadow: inset 0 -1px 0 #bbb;
+  }
+}
diff --git a/packages/markdown-preview/keymaps/markdown-preview.cson b/packages/markdown-preview/keymaps/markdown-preview.cson
new file mode 100644
index 000000000..79a9fa3ea
--- /dev/null
+++ b/packages/markdown-preview/keymaps/markdown-preview.cson
@@ -0,0 +1,18 @@
+'atom-text-editor':
+  'ctrl-shift-m': 'markdown-preview:toggle'
+
+'.platform-darwin .markdown-preview':
+  'cmd-a': 'markdown-preview:select-all'
+  'cmd-+': 'markdown-preview:zoom-in'
+  'cmd-=': 'markdown-preview:zoom-in'
+  'cmd--': 'markdown-preview:zoom-out'
+  'cmd-_': 'markdown-preview:zoom-out'
+  'cmd-0': 'markdown-preview:reset-zoom'
+
+'.platform-win32 .markdown-preview, .platform-linux .markdown-preview':
+  'ctrl-a': 'markdown-preview:select-all'
+  'ctrl-+': 'markdown-preview:zoom-in'
+  'ctrl-=': 'markdown-preview:zoom-in'
+  'ctrl--': 'markdown-preview:zoom-out'
+  'ctrl-_': 'markdown-preview:zoom-out'
+  'ctrl-0': 'markdown-preview:reset-zoom'
diff --git a/packages/markdown-preview/lib/extension-helper.js b/packages/markdown-preview/lib/extension-helper.js
new file mode 100644
index 000000000..a2a464eca
--- /dev/null
+++ b/packages/markdown-preview/lib/extension-helper.js
@@ -0,0 +1,50 @@
+const scopesByFenceName = {
+  bash: 'source.shell',
+  sh: 'source.shell',
+  powershell: 'source.powershell',
+  ps1: 'source.powershell',
+  c: 'source.c',
+  'c++': 'source.cpp',
+  cpp: 'source.cpp',
+  coffee: 'source.coffee',
+  'coffee-script': 'source.coffee',
+  coffeescript: 'source.coffee',
+  cs: 'source.cs',
+  csharp: 'source.cs',
+  css: 'source.css',
+  sass: 'source.sass',
+  scss: 'source.css.scss',
+  erlang: 'source.erl',
+  go: 'source.go',
+  html: 'text.html.basic',
+  java: 'source.java',
+  javascript: 'source.js',
+  js: 'source.js',
+  json: 'source.json',
+  less: 'source.less',
+  mustache: 'text.html.mustache',
+  objc: 'source.objc',
+  'objective-c': 'source.objc',
+  php: 'text.html.php',
+  py: 'source.python',
+  python: 'source.python',
+  rb: 'source.ruby',
+  ruby: 'source.ruby',
+  text: 'text.plain',
+  toml: 'source.toml',
+  ts: 'source.ts',
+  typescript: 'source.ts',
+  xml: 'text.xml',
+  yaml: 'source.yaml',
+  yml: 'source.yaml'
+}
+
+module.exports = {
+  scopeForFenceName (fenceName) {
+    fenceName = fenceName.toLowerCase()
+
+    return scopesByFenceName.hasOwnProperty(fenceName)
+      ? scopesByFenceName[fenceName]
+      : `source.${fenceName}`
+  }
+}
diff --git a/packages/markdown-preview/lib/main.js b/packages/markdown-preview/lib/main.js
new file mode 100644
index 000000000..0b87479b7
--- /dev/null
+++ b/packages/markdown-preview/lib/main.js
@@ -0,0 +1,228 @@
+const fs = require('fs-plus')
+const { CompositeDisposable } = require('atom')
+
+let MarkdownPreviewView = null
+let renderer = null
+
+const isMarkdownPreviewView = function (object) {
+  if (MarkdownPreviewView == null) {
+    MarkdownPreviewView = require('./markdown-preview-view')
+  }
+  return object instanceof MarkdownPreviewView
+}
+
+module.exports = {
+  activate () {
+    this.disposables = new CompositeDisposable()
+    this.commandSubscriptions = new CompositeDisposable()
+
+    this.disposables.add(
+      atom.config.observe('markdown-preview.grammars', grammars => {
+        this.commandSubscriptions.dispose()
+        this.commandSubscriptions = new CompositeDisposable()
+
+        if (grammars == null) {
+          grammars = []
+        }
+
+        for (const grammar of grammars.map(grammar =>
+          grammar.replace(/\./g, ' ')
+        )) {
+          this.commandSubscriptions.add(
+            atom.commands.add(`atom-text-editor[data-grammar='${grammar}']`, {
+              'markdown-preview:toggle': () => this.toggle(),
+              'markdown-preview:copy-html': {
+                displayName: 'Markdown Preview: Copy HTML',
+                didDispatch: () => this.copyHTML()
+              },
+              'markdown-preview:save-as-html': {
+                displayName: 'Markdown Preview: Save as HTML',
+                didDispatch: () => this.saveAsHTML()
+              },
+              'markdown-preview:toggle-break-on-single-newline': () => {
+                const keyPath = 'markdown-preview.breakOnSingleNewline'
+                atom.config.set(keyPath, !atom.config.get(keyPath))
+              },
+              'markdown-preview:toggle-github-style': () => {
+                const keyPath = 'markdown-preview.useGitHubStyle'
+                atom.config.set(keyPath, !atom.config.get(keyPath))
+              }
+            })
+          )
+        }
+      })
+    )
+
+    const previewFile = this.previewFile.bind(this)
+    for (const extension of [
+      'markdown',
+      'md',
+      'mdown',
+      'mkd',
+      'mkdown',
+      'ron',
+      'txt'
+    ]) {
+      this.disposables.add(
+        atom.commands.add(
+          `.tree-view .file .name[data-name$=\\.${extension}]`,
+          'markdown-preview:preview-file',
+          previewFile
+        )
+      )
+    }
+
+    this.disposables.add(
+      atom.workspace.addOpener(uriToOpen => {
+        let [protocol, path] = uriToOpen.split('://')
+        if (protocol !== 'markdown-preview') {
+          return
+        }
+
+        try {
+          path = decodeURI(path)
+        } catch (error) {
+          return
+        }
+
+        if (path.startsWith('editor/')) {
+          return this.createMarkdownPreviewView({ editorId: path.substring(7) })
+        } else {
+          return this.createMarkdownPreviewView({ filePath: path })
+        }
+      })
+    )
+  },
+
+  deactivate () {
+    this.disposables.dispose()
+    this.commandSubscriptions.dispose()
+  },
+
+  createMarkdownPreviewView (state) {
+    if (state.editorId || fs.isFileSync(state.filePath)) {
+      if (MarkdownPreviewView == null) {
+        MarkdownPreviewView = require('./markdown-preview-view')
+      }
+      return new MarkdownPreviewView(state)
+    }
+  },
+
+  toggle () {
+    if (isMarkdownPreviewView(atom.workspace.getActivePaneItem())) {
+      atom.workspace.destroyActivePaneItem()
+      return
+    }
+
+    const editor = atom.workspace.getActiveTextEditor()
+    if (editor == null) {
+      return
+    }
+
+    const grammars = atom.config.get('markdown-preview.grammars') || []
+    if (!grammars.includes(editor.getGrammar().scopeName)) {
+      return
+    }
+
+    if (!this.removePreviewForEditor(editor)) {
+      return this.addPreviewForEditor(editor)
+    }
+  },
+
+  uriForEditor (editor) {
+    return `markdown-preview://editor/${editor.id}`
+  },
+
+  removePreviewForEditor (editor) {
+    const uri = this.uriForEditor(editor)
+    const previewPane = atom.workspace.paneForURI(uri)
+    if (previewPane != null) {
+      previewPane.destroyItem(previewPane.itemForURI(uri))
+      return true
+    } else {
+      return false
+    }
+  },
+
+  addPreviewForEditor (editor) {
+    const uri = this.uriForEditor(editor)
+    const previousActivePane = atom.workspace.getActivePane()
+    const options = { searchAllPanes: true }
+    if (atom.config.get('markdown-preview.openPreviewInSplitPane')) {
+      options.split = 'right'
+    }
+
+    return atom.workspace
+      .open(uri, options)
+      .then(function (markdownPreviewView) {
+        if (isMarkdownPreviewView(markdownPreviewView)) {
+          previousActivePane.activate()
+        }
+      })
+  },
+
+  previewFile ({ target }) {
+    const filePath = target.dataset.path
+    if (!filePath) {
+      return
+    }
+
+    for (const editor of atom.workspace.getTextEditors()) {
+      if (editor.getPath() === filePath) {
+        return this.addPreviewForEditor(editor)
+      }
+    }
+
+    atom.workspace.open(`markdown-preview://${encodeURI(filePath)}`, {
+      searchAllPanes: true
+    })
+  },
+
+  async copyHTML () {
+    const editor = atom.workspace.getActiveTextEditor()
+    if (editor == null) {
+      return
+    }
+
+    if (renderer == null) {
+      renderer = require('./renderer')
+    }
+    const text = editor.getSelectedText() || editor.getText()
+    const html = await renderer.toHTML(
+      text,
+      editor.getPath(),
+      editor.getGrammar()
+    )
+
+    atom.clipboard.write(html)
+  },
+
+  saveAsHTML () {
+    const activePaneItem = atom.workspace.getActivePaneItem()
+    if (isMarkdownPreviewView(activePaneItem)) {
+      atom.workspace.getActivePane().saveItemAs(activePaneItem)
+      return
+    }
+
+    const editor = atom.workspace.getActiveTextEditor()
+    if (editor == null) {
+      return
+    }
+
+    const grammars = atom.config.get('markdown-preview.grammars') || []
+    if (!grammars.includes(editor.getGrammar().scopeName)) {
+      return
+    }
+
+    const uri = this.uriForEditor(editor)
+    const markdownPreviewPane = atom.workspace.paneForURI(uri)
+    const markdownPreviewPaneItem =
+      markdownPreviewPane != null
+        ? markdownPreviewPane.itemForURI(uri)
+        : undefined
+
+    if (isMarkdownPreviewView(markdownPreviewPaneItem)) {
+      return markdownPreviewPane.saveItemAs(markdownPreviewPaneItem)
+    }
+  }
+}
diff --git a/packages/markdown-preview/lib/markdown-preview-view.js b/packages/markdown-preview/lib/markdown-preview-view.js
new file mode 100644
index 000000000..40ee87b98
--- /dev/null
+++ b/packages/markdown-preview/lib/markdown-preview-view.js
@@ -0,0 +1,513 @@
+const path = require('path')
+
+const { Emitter, Disposable, CompositeDisposable, File } = require('atom')
+const _ = require('underscore-plus')
+const fs = require('fs-plus')
+
+const renderer = require('./renderer')
+
+module.exports = class MarkdownPreviewView {
+  static deserialize (params) {
+    return new MarkdownPreviewView(params)
+  }
+
+  constructor ({ editorId, filePath }) {
+    this.editorId = editorId
+    this.filePath = filePath
+    this.element = document.createElement('div')
+    this.element.classList.add('markdown-preview')
+    this.element.tabIndex = -1
+    this.emitter = new Emitter()
+    this.loaded = false
+    this.disposables = new CompositeDisposable()
+    this.registerScrollCommands()
+    if (this.editorId != null) {
+      this.resolveEditor(this.editorId)
+    } else if (atom.packages.hasActivatedInitialPackages()) {
+      this.subscribeToFilePath(this.filePath)
+    } else {
+      this.disposables.add(
+        atom.packages.onDidActivateInitialPackages(() => {
+          this.subscribeToFilePath(this.filePath)
+        })
+      )
+    }
+  }
+
+  serialize () {
+    return {
+      deserializer: 'MarkdownPreviewView',
+      filePath: this.getPath() != null ? this.getPath() : this.filePath,
+      editorId: this.editorId
+    }
+  }
+
+  copy () {
+    return new MarkdownPreviewView({
+      editorId: this.editorId,
+      filePath: this.getPath() != null ? this.getPath() : this.filePath
+    })
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    this.element.remove()
+  }
+
+  registerScrollCommands () {
+    this.disposables.add(
+      atom.commands.add(this.element, {
+        'core:move-up': () => {
+          this.element.scrollTop -= document.body.offsetHeight / 20
+        },
+        'core:move-down': () => {
+          this.element.scrollTop += document.body.offsetHeight / 20
+        },
+        'core:page-up': () => {
+          this.element.scrollTop -= this.element.offsetHeight
+        },
+        'core:page-down': () => {
+          this.element.scrollTop += this.element.offsetHeight
+        },
+        'core:move-to-top': () => {
+          this.element.scrollTop = 0
+        },
+        'core:move-to-bottom': () => {
+          this.element.scrollTop = this.element.scrollHeight
+        }
+      })
+    )
+  }
+
+  onDidChangeTitle (callback) {
+    return this.emitter.on('did-change-title', callback)
+  }
+
+  onDidChangeModified (callback) {
+    // No op to suppress deprecation warning
+    return new Disposable()
+  }
+
+  onDidChangeMarkdown (callback) {
+    return this.emitter.on('did-change-markdown', callback)
+  }
+
+  subscribeToFilePath (filePath) {
+    this.file = new File(filePath)
+    this.emitter.emit('did-change-title')
+    this.disposables.add(
+      this.file.onDidRename(() => this.emitter.emit('did-change-title'))
+    )
+    this.handleEvents()
+    return this.renderMarkdown()
+  }
+
+  resolveEditor (editorId) {
+    const resolve = () => {
+      this.editor = this.editorForId(editorId)
+
+      if (this.editor != null) {
+        this.emitter.emit('did-change-title')
+        this.disposables.add(
+          this.editor.onDidDestroy(() =>
+            this.subscribeToFilePath(this.getPath())
+          )
+        )
+        this.handleEvents()
+        this.renderMarkdown()
+      } else {
+        this.subscribeToFilePath(this.filePath)
+      }
+    }
+
+    if (atom.packages.hasActivatedInitialPackages()) {
+      resolve()
+    } else {
+      this.disposables.add(atom.packages.onDidActivateInitialPackages(resolve))
+    }
+  }
+
+  editorForId (editorId) {
+    for (const editor of atom.workspace.getTextEditors()) {
+      if (editor.id != null && editor.id.toString() === editorId.toString()) {
+        return editor
+      }
+    }
+    return null
+  }
+
+  handleEvents () {
+    const lazyRenderMarkdown = _.debounce(() => this.renderMarkdown(), 250)
+    this.disposables.add(
+      atom.grammars.onDidAddGrammar(() => lazyRenderMarkdown())
+    )
+    if (typeof atom.grammars.onDidRemoveGrammar === 'function') {
+      this.disposables.add(
+        atom.grammars.onDidRemoveGrammar(() => lazyRenderMarkdown())
+      )
+    } else {
+      // TODO: Remove onDidUpdateGrammar hook once onDidRemoveGrammar is released
+      this.disposables.add(
+        atom.grammars.onDidUpdateGrammar(() => lazyRenderMarkdown())
+      )
+    }
+
+    atom.commands.add(this.element, {
+      'core:copy': event => {
+        event.stopPropagation()
+        return this.copyToClipboard()
+      },
+      'markdown-preview:select-all': () => {
+        this.selectAll()
+      },
+      'markdown-preview:zoom-in': () => {
+        const zoomLevel = parseFloat(getComputedStyle(this.element).zoom)
+        this.element.style.zoom = zoomLevel + 0.1
+      },
+      'markdown-preview:zoom-out': () => {
+        const zoomLevel = parseFloat(getComputedStyle(this.element).zoom)
+        this.element.style.zoom = zoomLevel - 0.1
+      },
+      'markdown-preview:reset-zoom': () => {
+        this.element.style.zoom = 1
+      },
+      'markdown-preview:toggle-break-on-single-newline' () {
+        const keyPath = 'markdown-preview.breakOnSingleNewline'
+        atom.config.set(keyPath, !atom.config.get(keyPath))
+      },
+      'markdown-preview:toggle-github-style' () {
+        const keyPath = 'markdown-preview.useGitHubStyle'
+        atom.config.set(keyPath, !atom.config.get(keyPath))
+      }
+    })
+
+    const changeHandler = () => {
+      this.renderMarkdown()
+
+      const pane = atom.workspace.paneForItem(this)
+      if (pane != null && pane !== atom.workspace.getActivePane()) {
+        pane.activateItem(this)
+      }
+    }
+
+    if (this.file) {
+      this.disposables.add(this.file.onDidChange(changeHandler))
+    } else if (this.editor) {
+      this.disposables.add(
+        this.editor.getBuffer().onDidStopChanging(function () {
+          if (atom.config.get('markdown-preview.liveUpdate')) {
+            changeHandler()
+          }
+        })
+      )
+      this.disposables.add(
+        this.editor.onDidChangePath(() => this.emitter.emit('did-change-title'))
+      )
+      this.disposables.add(
+        this.editor.getBuffer().onDidSave(function () {
+          if (!atom.config.get('markdown-preview.liveUpdate')) {
+            changeHandler()
+          }
+        })
+      )
+      this.disposables.add(
+        this.editor.getBuffer().onDidReload(function () {
+          if (!atom.config.get('markdown-preview.liveUpdate')) {
+            changeHandler()
+          }
+        })
+      )
+    }
+
+    this.disposables.add(
+      atom.config.onDidChange(
+        'markdown-preview.breakOnSingleNewline',
+        changeHandler
+      )
+    )
+
+    this.disposables.add(
+      atom.config.observe('markdown-preview.useGitHubStyle', useGitHubStyle => {
+        if (useGitHubStyle) {
+          this.element.setAttribute('data-use-github-style', '')
+        } else {
+          this.element.removeAttribute('data-use-github-style')
+        }
+      })
+    )
+
+    document.onselectionchange = () => {
+      const selection = window.getSelection()
+      const selectedNode = selection.baseNode
+      if (
+        selectedNode === null ||
+        this.element === selectedNode ||
+        this.element.contains(selectedNode)
+      ) {
+        if (selection.isCollapsed) {
+          this.element.classList.remove('has-selection')
+        } else {
+          this.element.classList.add('has-selection')
+        }
+      }
+    }
+  }
+
+  renderMarkdown () {
+    if (!this.loaded) {
+      this.showLoading()
+    }
+    return this.getMarkdownSource()
+      .then(source => {
+        if (source != null) {
+          return this.renderMarkdownText(source)
+        }
+      })
+      .catch(reason => this.showError({ message: reason }))
+  }
+
+  getMarkdownSource () {
+    if (this.file && this.file.getPath()) {
+      return this.file
+        .read()
+        .then(source => {
+          if (source === null) {
+            return Promise.reject(
+              new Error(`${this.file.getBaseName()} could not be found`)
+            )
+          } else {
+            return Promise.resolve(source)
+          }
+        })
+        .catch(reason => Promise.reject(reason))
+    } else if (this.editor != null) {
+      return Promise.resolve(this.editor.getText())
+    } else {
+      return Promise.reject(new Error('No editor found'))
+    }
+  }
+
+  async getHTML () {
+    const source = await this.getMarkdownSource()
+
+    if (source == null) {
+      return
+    }
+
+    return renderer.toHTML(source, this.getPath(), this.getGrammar())
+  }
+
+  async renderMarkdownText (text) {
+    const { scrollTop } = this.element
+
+    try {
+      const domFragment = await renderer.toDOMFragment(
+        text,
+        this.getPath(),
+        this.getGrammar()
+      )
+
+      this.loading = false
+      this.loaded = true
+      this.element.textContent = ''
+      this.element.appendChild(domFragment)
+      this.emitter.emit('did-change-markdown')
+      this.element.scrollTop = scrollTop
+    } catch (error) {
+      this.showError(error)
+    }
+  }
+
+  getTitle () {
+    if (this.file != null && this.getPath() != null) {
+      return `${path.basename(this.getPath())} Preview`
+    } else if (this.editor != null) {
+      return `${this.editor.getTitle()} Preview`
+    } else {
+      return 'Markdown Preview'
+    }
+  }
+
+  getIconName () {
+    return 'markdown'
+  }
+
+  getURI () {
+    if (this.file != null) {
+      return `markdown-preview://${this.getPath()}`
+    } else {
+      return `markdown-preview://editor/${this.editorId}`
+    }
+  }
+
+  getPath () {
+    if (this.file != null) {
+      return this.file.getPath()
+    } else if (this.editor != null) {
+      return this.editor.getPath()
+    }
+  }
+
+  getGrammar () {
+    return this.editor != null ? this.editor.getGrammar() : undefined
+  }
+
+  getDocumentStyleSheets () {
+    // This function exists so we can stub it
+    return document.styleSheets
+  }
+
+  getTextEditorStyles () {
+    const textEditorStyles = document.createElement('atom-styles')
+    textEditorStyles.initialize(atom.styles)
+    textEditorStyles.setAttribute('context', 'atom-text-editor')
+    document.body.appendChild(textEditorStyles)
+
+    // Extract style elements content
+    return Array.prototype.slice
+      .apply(textEditorStyles.childNodes)
+      .map(styleElement => styleElement.innerText)
+  }
+
+  getMarkdownPreviewCSS () {
+    const markdownPreviewRules = []
+    const ruleRegExp = /\.markdown-preview/
+    const cssUrlRegExp = /url\(atom:\/\/markdown-preview\/assets\/(.*)\)/
+
+    for (const stylesheet of this.getDocumentStyleSheets()) {
+      if (stylesheet.rules != null) {
+        for (const rule of stylesheet.rules) {
+          // We only need `.markdown-review` css
+          if (rule.selectorText && rule.selectorText.match(ruleRegExp)) {
+            markdownPreviewRules.push(rule.cssText)
+          }
+        }
+      }
+    }
+
+    return markdownPreviewRules
+      .concat(this.getTextEditorStyles())
+      .join('\n')
+      .replace(/atom-text-editor/g, 'pre.editor-colors')
+      .replace(/:host/g, '.host') // Remove shadow-dom :host selector causing problem on FF
+      .replace(cssUrlRegExp, function (match, assetsName, offset, string) {
+        // base64 encode assets
+        const assetPath = path.join(__dirname, '../assets', assetsName)
+        const originalData = fs.readFileSync(assetPath, 'binary')
+        const base64Data = Buffer.from(originalData, 'binary').toString(
+          'base64'
+        )
+        return `url('data:image/jpeg;base64,${base64Data}')`
+      })
+  }
+
+  showError (result) {
+    this.element.textContent = ''
+    const h2 = document.createElement('h2')
+    h2.textContent = 'Previewing Markdown Failed'
+    this.element.appendChild(h2)
+    if (result) {
+      const h3 = document.createElement('h3')
+      h3.textContent = result.message
+      this.element.appendChild(h3)
+    }
+  }
+
+  showLoading () {
+    this.loading = true
+    this.element.textContent = ''
+    const div = document.createElement('div')
+    div.classList.add('markdown-spinner')
+    div.textContent = 'Loading Markdown\u2026'
+    this.element.appendChild(div)
+  }
+
+  selectAll () {
+    if (this.loading) {
+      return
+    }
+
+    const selection = window.getSelection()
+    selection.removeAllRanges()
+    const range = document.createRange()
+    range.selectNodeContents(this.element)
+    selection.addRange(range)
+  }
+
+  async copyToClipboard () {
+    if (this.loading) {
+      return
+    }
+
+    const selection = window.getSelection()
+    const selectedText = selection.toString()
+    const selectedNode = selection.baseNode
+
+    // Use default copy event handler if there is selected text inside this view
+    if (
+      selectedText &&
+      selectedNode != null &&
+      (this.element === selectedNode || this.element.contains(selectedNode))
+    ) {
+      atom.clipboard.write(selectedText)
+    } else {
+      try {
+        const html = await this.getHTML()
+
+        atom.clipboard.write(html)
+      } catch (error) {
+        atom.notifications.addError('Copying Markdown as HTML failed', {
+          dismissable: true,
+          detail: error.message
+        })
+      }
+    }
+  }
+
+  getSaveDialogOptions () {
+    let defaultPath = this.getPath()
+    if (defaultPath) {
+      defaultPath += '.html'
+    } else {
+      let projectPath
+      defaultPath = 'untitled.md.html'
+      if ((projectPath = atom.project.getPaths()[0])) {
+        defaultPath = path.join(projectPath, defaultPath)
+      }
+    }
+
+    return { defaultPath }
+  }
+
+  async saveAs (htmlFilePath) {
+    if (this.loading) {
+      atom.notifications.addWarning(
+        'Please wait until the Markdown Preview has finished loading before saving'
+      )
+      return
+    }
+
+    const filePath = this.getPath()
+    let title = 'Markdown to HTML'
+    if (filePath) {
+      title = path.parse(filePath).name
+    }
+
+    const htmlBody = await this.getHTML()
+
+    const html =
+      `\
+<!DOCTYPE html>
+<html>
+  <head>
+      <meta charset="utf-8" />
+      <title>${title}</title>
+      <style>${this.getMarkdownPreviewCSS()}</style>
+  </head>
+  <body class='markdown-preview' data-use-github-style>${htmlBody}</body>
+</html>` + '\n' // Ensure trailing newline
+
+    fs.writeFileSync(htmlFilePath, html)
+    return atom.workspace.open(htmlFilePath)
+  }
+}
diff --git a/packages/markdown-preview/lib/renderer.js b/packages/markdown-preview/lib/renderer.js
new file mode 100644
index 000000000..ecc9139d9
--- /dev/null
+++ b/packages/markdown-preview/lib/renderer.js
@@ -0,0 +1,243 @@
+const { TextEditor } = require('atom')
+const path = require('path')
+const createDOMPurify = require('dompurify')
+const emoji = require('emoji-images')
+const fs = require('fs-plus')
+let marked = null // Defer until used
+let renderer = null
+let cheerio = null
+let yamlFrontMatter = null
+
+const { scopeForFenceName } = require('./extension-helper')
+const { resourcePath } = atom.getLoadSettings()
+const packagePath = path.dirname(__dirname)
+
+const emojiFolder = path.join(
+  path.dirname(require.resolve('emoji-images')),
+  'pngs'
+)
+
+exports.toDOMFragment = async function (text, filePath, grammar, callback) {
+  if (text == null) {
+    text = ''
+  }
+
+  const domFragment = render(text, filePath)
+
+  await highlightCodeBlocks(domFragment, grammar, makeAtomEditorNonInteractive)
+
+  return domFragment
+}
+
+exports.toHTML = async function (text, filePath, grammar) {
+  if (text == null) {
+    text = ''
+  }
+
+  const domFragment = render(text, filePath)
+  const div = document.createElement('div')
+
+  div.appendChild(domFragment)
+  document.body.appendChild(div)
+
+  await highlightCodeBlocks(div, grammar, convertAtomEditorToStandardElement)
+
+  const result = div.innerHTML
+  div.remove()
+
+  return result
+}
+
+var render = function (text, filePath) {
+  if (marked == null || yamlFrontMatter == null || cheerio == null) {
+    marked = require('marked')
+    yamlFrontMatter = require('yaml-front-matter')
+    cheerio = require('cheerio')
+
+    renderer = new marked.Renderer()
+    renderer.listitem = function (text, isTask) {
+      const listAttributes = isTask ? ' class="task-list-item"' : ''
+
+      return `<li ${listAttributes}>${text}</li>\n`
+    }
+  }
+
+  marked.setOptions({
+    sanitize: false,
+    breaks: atom.config.get('markdown-preview.breakOnSingleNewline'),
+    renderer
+  })
+
+  const { __content, ...vars } = yamlFrontMatter.loadFront(text)
+
+  let html = marked(renderYamlTable(vars) + __content)
+
+  // emoji-images is too aggressive, so replace images in monospace tags with the actual emoji text.
+  const $ = cheerio.load(emoji(html, emojiFolder, 20))
+  $('pre img').each((index, element) =>
+    $(element).replaceWith($(element).attr('title'))
+  )
+  $('code img').each((index, element) =>
+    $(element).replaceWith($(element).attr('title'))
+  )
+
+  html = $.html()
+
+  html = createDOMPurify().sanitize(html, {
+    ALLOW_UNKNOWN_PROTOCOLS: atom.config.get(
+      'markdown-preview.allowUnsafeProtocols'
+    )
+  })
+
+  const template = document.createElement('template')
+  template.innerHTML = html.trim()
+  const fragment = template.content.cloneNode(true)
+
+  resolveImagePaths(fragment, filePath)
+
+  return fragment
+}
+
+function renderYamlTable (variables) {
+  const entries = Object.entries(variables)
+
+  if (!entries.length) {
+    return ''
+  }
+
+  const markdownRows = [
+    entries.map(entry => entry[0]),
+    entries.map(entry => '--'),
+    entries.map(entry => entry[1])
+  ]
+
+  return (
+    markdownRows.map(row => '| ' + row.join(' | ') + ' |').join('\n') + '\n'
+  )
+}
+
+var resolveImagePaths = function (element, filePath) {
+  const [rootDirectory] = atom.project.relativizePath(filePath)
+
+  const result = []
+  for (const img of element.querySelectorAll('img')) {
+    // We use the raw attribute instead of the .src property because the value
+    // of the property seems to be transformed in some cases.
+    let src
+
+    if ((src = img.getAttribute('src'))) {
+      if (src.match(/^(https?|atom):\/\//)) {
+        continue
+      }
+      if (src.startsWith(process.resourcesPath)) {
+        continue
+      }
+      if (src.startsWith(resourcePath)) {
+        continue
+      }
+      if (src.startsWith(packagePath)) {
+        continue
+      }
+
+      if (src[0] === '/') {
+        if (!fs.isFileSync(src)) {
+          if (rootDirectory) {
+            result.push((img.src = path.join(rootDirectory, src.substring(1))))
+          } else {
+            result.push(undefined)
+          }
+        } else {
+          result.push(undefined)
+        }
+      } else {
+        result.push((img.src = path.resolve(path.dirname(filePath), src)))
+      }
+    } else {
+      result.push(undefined)
+    }
+  }
+
+  return result
+}
+
+var highlightCodeBlocks = function (domFragment, grammar, editorCallback) {
+  let defaultLanguage, fontFamily
+  if (
+    (grammar != null ? grammar.scopeName : undefined) === 'source.litcoffee'
+  ) {
+    defaultLanguage = 'coffee'
+  } else {
+    defaultLanguage = 'text'
+  }
+
+  if ((fontFamily = atom.config.get('editor.fontFamily'))) {
+    for (const codeElement of domFragment.querySelectorAll('code')) {
+      codeElement.style.fontFamily = fontFamily
+    }
+  }
+
+  const promises = []
+  for (const preElement of domFragment.querySelectorAll('pre')) {
+    const codeBlock =
+      preElement.firstElementChild != null
+        ? preElement.firstElementChild
+        : preElement
+    const className = codeBlock.getAttribute('class')
+    const fenceName =
+      className != null ? className.replace(/^language-/, '') : defaultLanguage
+
+    const editor = new TextEditor({
+      readonly: true,
+      keyboardInputEnabled: false
+    })
+    const editorElement = editor.getElement()
+
+    preElement.classList.add('editor-colors', `lang-${fenceName}`)
+    editorElement.setUpdatedSynchronously(true)
+    preElement.innerHTML = ''
+    preElement.parentNode.insertBefore(editorElement, preElement)
+    editor.setText(codeBlock.textContent.replace(/\r?\n$/, ''))
+    atom.grammars.assignLanguageMode(editor, scopeForFenceName(fenceName))
+    editor.setVisible(true)
+
+    promises.push(editorCallback(editorElement, preElement))
+  }
+  return Promise.all(promises)
+}
+
+var makeAtomEditorNonInteractive = function (editorElement, preElement) {
+  preElement.remove()
+  editorElement.setAttributeNode(document.createAttribute('gutter-hidden')) // Hide gutter
+  editorElement.removeAttribute('tabindex') // Make read-only
+
+  // Remove line decorations from code blocks.
+  for (const cursorLineDecoration of editorElement.getModel()
+    .cursorLineDecorations) {
+    cursorLineDecoration.destroy()
+  }
+}
+
+var convertAtomEditorToStandardElement = (editorElement, preElement) => {
+  return new Promise(function (resolve) {
+    const editor = editorElement.getModel()
+    const done = () =>
+      editor.component.getNextUpdatePromise().then(function () {
+        for (const line of editorElement.querySelectorAll(
+          '.line:not(.dummy)'
+        )) {
+          const line2 = document.createElement('div')
+          line2.className = 'line'
+          line2.innerHTML = line.firstChild.innerHTML
+          preElement.appendChild(line2)
+        }
+        editorElement.remove()
+        resolve()
+      })
+    const languageMode = editor.getBuffer().getLanguageMode()
+    if (languageMode.fullyTokenized || languageMode.tree) {
+      done()
+    } else {
+      editor.onDidTokenize(done)
+    }
+  })
+}
diff --git a/packages/markdown-preview/menus/markdown-preview.cson b/packages/markdown-preview/menus/markdown-preview.cson
new file mode 100644
index 000000000..a0966c812
--- /dev/null
+++ b/packages/markdown-preview/menus/markdown-preview.cson
@@ -0,0 +1,37 @@
+menu: [
+  label: 'Packages'
+  submenu: [
+    label: 'Markdown Preview'
+    submenu: [
+      {label: 'Toggle Preview', command: 'markdown-preview:toggle'}
+      {label: 'Toggle Break on Single Newline', command: 'markdown-preview:toggle-break-on-single-newline'}
+      {label: 'Toggle GitHub Style', command: 'markdown-preview:toggle-github-style'}
+    ]
+  ]
+]
+
+'context-menu':
+  '.markdown-preview': [
+    {label: 'Select All', command: 'markdown-preview:select-all'}
+    {label: 'Save As HTML\u2026', command: 'core:save-as'}
+  ]
+  '.markdown-preview.has-selection': [
+    {label: 'Copy', command: 'core:copy'}
+  ]
+  '.markdown-preview:not(.has-selection)': [
+    {label: 'Copy As HTML', command: 'core:copy'}
+  ]
+  '.tree-view .file .name[data-name$=\\.markdown]':
+    [{label: 'Markdown Preview', command: 'markdown-preview:preview-file'}]
+  '.tree-view .file .name[data-name$=\\.md]':
+    [{label: 'Markdown Preview', command: 'markdown-preview:preview-file'}]
+  '.tree-view .file .name[data-name$=\\.mdown]':
+    [{label: 'Markdown Preview', command: 'markdown-preview:preview-file'}]
+  '.tree-view .file .name[data-name$=\\.mkd]':
+    [{label: 'Markdown Preview', command: 'markdown-preview:preview-file'}]
+  '.tree-view .file .name[data-name$=\\.mkdown]':
+    [{label: 'Markdown Preview', command: 'markdown-preview:preview-file'}]
+  '.tree-view .file .name[data-name$=\\.ron]':
+    [{label: 'Markdown Preview', command: 'markdown-preview:preview-file'}]
+  '.tree-view .file .name[data-name$=\\.txt]':
+    [{label: 'Markdown Preview', command: 'markdown-preview:preview-file'}]
diff --git a/packages/markdown-preview/package-lock.json b/packages/markdown-preview/package-lock.json
new file mode 100644
index 000000000..b3a9d9fc2
--- /dev/null
+++ b/packages/markdown-preview/package-lock.json
@@ -0,0 +1,426 @@
+{
+  "name": "markdown-preview",
+  "version": "0.160.2",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "markdown-preview",
+      "version": "0.160.2",
+      "license": "MIT",
+      "dependencies": {
+        "cheerio": "^1.0.0-rc.3",
+        "dompurify": "^2.0.17",
+        "emoji-images": "^0.1.1",
+        "fs-plus": "^3.0.0",
+        "marked": "^0.7.0",
+        "underscore-plus": "^1.0.0",
+        "yaml-front-matter": "^4.0.0"
+      },
+      "devDependencies": {
+        "temp": "^0.8.1"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/@types/node": {
+      "version": "11.13.7",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-11.13.7.tgz",
+      "integrity": "sha512-suFHr6hcA9mp8vFrZTgrmqW2ZU3mbWsryQtQlY/QvwTISCw7nw/j+bCQPPohqmskhmqa5wLNuMHTTsc+xf1MQg=="
+    },
+    "node_modules/argparse": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dependencies": {
+        "sprintf-js": "~1.0.2"
+      }
+    },
+    "node_modules/async": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
+    "node_modules/boolbase": {
+      "version": "1.0.0",
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+      "integrity": "sha1-aN/1++YMUes3cl6p4+0xDcwed24="
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
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+      },
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+      "resolved": "https://registry.npmjs.org/commander/-/commander-1.0.0.tgz",
+      "integrity": "sha1-XmqI5wcP9ZCINurRkWlUjDD5C80=",
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+      }
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+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
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+    },
+    "node_modules/temp/node_modules/rimraf": {
+      "version": "2.2.8",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
+      "integrity": "sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI=",
+      "dev": true,
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.13.1",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.1.tgz",
+      "integrity": "sha512-hzSoAVtJF+3ZtiFX0VgfFPHEDRm7Y/QPjGyNo4TVdnDTdft3tr8hEkD25a1jC+TjTuE7tkHGKkhwCgs9dgBB2g=="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    },
+    "node_modules/util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    },
+    "node_modules/yaml-front-matter": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yaml-front-matter/-/yaml-front-matter-4.0.0.tgz",
+      "integrity": "sha1-EcN4xU6sMGGoLLr2k6abTkxE9IQ=",
+      "dependencies": {
+        "commander": "1.0.0",
+        "js-yaml": "^3.10.0"
+      },
+      "bin": {
+        "yaml-front-matter": "bin/js-yaml-front.js"
+      }
+    }
+  }
+}
diff --git a/packages/markdown-preview/package.json b/packages/markdown-preview/package.json
new file mode 100644
index 000000000..05bd4695e
--- /dev/null
+++ b/packages/markdown-preview/package.json
@@ -0,0 +1,66 @@
+{
+  "name": "markdown-preview",
+  "version": "0.160.2",
+  "main": "./lib/main",
+  "description": "Open a rendered version of the Markdown in the current editor with `ctrl-shift-m`.",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "engines": {
+    "atom": "*"
+  },
+  "dependencies": {
+    "cheerio": "^1.0.0-rc.3",
+    "dompurify": "^2.0.17",
+    "emoji-images": "^0.1.1",
+    "fs-plus": "^3.0.0",
+    "marked": "^0.7.0",
+    "underscore-plus": "^1.0.0",
+    "yaml-front-matter": "^4.0.0"
+  },
+  "devDependencies": {
+    "temp": "^0.8.1"
+  },
+  "deserializers": {
+    "MarkdownPreviewView": "createMarkdownPreviewView"
+  },
+  "configSchema": {
+    "breakOnSingleNewline": {
+      "type": "boolean",
+      "default": false,
+      "description": "In Markdown, a single newline character doesn't cause a line break in the generated HTML. In GitHub Flavored Markdown, that is not true. Enable this config option to insert line breaks in rendered HTML for single newlines in Markdown source."
+    },
+    "liveUpdate": {
+      "type": "boolean",
+      "default": true,
+      "description": "Re-render the preview as the contents of the source changes, without requiring the source buffer to be saved. If disabled, the preview is re-rendered only when the buffer is saved to disk."
+    },
+    "openPreviewInSplitPane": {
+      "type": "boolean",
+      "default": true,
+      "description": "Open the preview in a split pane. If disabled, the preview is opened in a new tab in the same pane."
+    },
+    "allowUnsafeProtocols": {
+      "type": "boolean",
+      "default": false,
+      "description": "Allow HTML attributes to use protocols normally considered unsafe such as `file://` and absolute paths on Windows."
+    },
+    "grammars": {
+      "type": "array",
+      "default": [
+        "source.gfm",
+        "source.litcoffee",
+        "text.html.basic",
+        "text.md",
+        "text.plain",
+        "text.plain.null-grammar"
+      ],
+      "description": "List of scopes for languages for which previewing is enabled. See [this README](https://github.com/pulsar-edit/spell-check#readme) for more information on finding the correct scope for a specific language."
+    },
+    "useGitHubStyle": {
+      "title": "Use GitHub.com style",
+      "type": "boolean",
+      "default": false,
+      "description": "Use the same CSS styles for preview as the ones used on GitHub.com."
+    }
+  }
+}
diff --git a/packages/markdown-preview/spec/fixtures/subdir/áccéntéd.md b/packages/markdown-preview/spec/fixtures/subdir/áccéntéd.md
new file mode 100644
index 000000000..f00b526a9
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/áccéntéd.md
@@ -0,0 +1 @@
+# Testing
diff --git a/packages/markdown-preview/spec/fixtures/subdir/code-block.md b/packages/markdown-preview/spec/fixtures/subdir/code-block.md
new file mode 100644
index 000000000..4e88d4689
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/code-block.md
@@ -0,0 +1,9 @@
+# Code Block
+
+```javascript
+if a === 3 {
+  b = 5
+}
+```
+
+encoding → issue
diff --git a/packages/markdown-preview/spec/fixtures/subdir/doctype-tag.md b/packages/markdown-preview/spec/fixtures/subdir/doctype-tag.md
new file mode 100644
index 000000000..ec44f34a3
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/doctype-tag.md
@@ -0,0 +1,4 @@
+
+<!doctype html>
+content
+<!doctype html>
diff --git a/packages/markdown-preview/spec/fixtures/subdir/evil.md b/packages/markdown-preview/spec/fixtures/subdir/evil.md
new file mode 100644
index 000000000..cb4fe4c4f
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/evil.md
@@ -0,0 +1,5 @@
+hello
+<script src="index.js"></script>
+<script>alert('rm -fr')</script>
+<img onload="alert('rm -rf')" onerror="alert('rm -fr')">
+world
diff --git a/packages/markdown-preview/spec/fixtures/subdir/file with space.md b/packages/markdown-preview/spec/fixtures/subdir/file with space.md
new file mode 100644
index 000000000..f00b526a9
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/file with space.md	
@@ -0,0 +1 @@
+# Testing
diff --git a/packages/markdown-preview/spec/fixtures/subdir/file.markdown b/packages/markdown-preview/spec/fixtures/subdir/file.markdown
new file mode 100644
index 000000000..ac8dc0178
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/file.markdown
@@ -0,0 +1,51 @@
+---
+variable1: value1
+array:
+  - foo
+  - bar
+---
+
+## File.markdown
+
+:cool:
+
+```
+function f(x) {
+  return x++;
+}
+```
+
+```Ruby
+def func
+  x = 1
+end
+```
+
+* ```javascript
+if a === 3 {
+  b = 5
+}
+```
+
+```kombucha
+drink-that-stuff:
+  tastes-weird~
+```
+
+```python
+def foo()
+
+  bar
+
+
+  baz
+```
+
+![Image1](image1.png)
+
+![Image2](/tmp/image2.png)
+
+![Image3](http://github.com/image3.png)
+
+lorem
+ipsum
diff --git a/packages/markdown-preview/spec/fixtures/subdir/html-tag.md b/packages/markdown-preview/spec/fixtures/subdir/html-tag.md
new file mode 100644
index 000000000..94cb6d780
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/html-tag.md
@@ -0,0 +1 @@
+<html>content</html>
diff --git a/packages/markdown-preview/spec/fixtures/subdir/pre-tag.md b/packages/markdown-preview/spec/fixtures/subdir/pre-tag.md
new file mode 100644
index 000000000..08bf25174
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/pre-tag.md
@@ -0,0 +1 @@
+<pre>hey</pre>
diff --git a/packages/markdown-preview/spec/fixtures/subdir/simple.md b/packages/markdown-preview/spec/fixtures/subdir/simple.md
new file mode 100644
index 000000000..20d93cc6a
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/simple.md
@@ -0,0 +1,5 @@
+*italic*
+
+**bold**
+
+encoding → issue
diff --git a/packages/markdown-preview/spec/fixtures/subdir/áccéntéd.md b/packages/markdown-preview/spec/fixtures/subdir/áccéntéd.md
new file mode 100644
index 000000000..f00b526a9
--- /dev/null
+++ b/packages/markdown-preview/spec/fixtures/subdir/áccéntéd.md
@@ -0,0 +1 @@
+# Testing
diff --git a/packages/markdown-preview/spec/markdown-preview-spec.js b/packages/markdown-preview/spec/markdown-preview-spec.js
new file mode 100644
index 000000000..6a90d8ce1
--- /dev/null
+++ b/packages/markdown-preview/spec/markdown-preview-spec.js
@@ -0,0 +1,839 @@
+const path = require('path')
+const fs = require('fs-plus')
+const temp = require('temp').track()
+const MarkdownPreviewView = require('../lib/markdown-preview-view')
+const { TextEditor } = require('atom')
+const TextMateLanguageMode = new TextEditor().getBuffer().getLanguageMode()
+  .constructor
+
+describe('Markdown Preview', function () {
+  let preview = null
+
+  beforeEach(function () {
+    const fixturesPath = path.join(__dirname, 'fixtures')
+    const tempPath = temp.mkdirSync('atom')
+    fs.copySync(fixturesPath, tempPath)
+    atom.project.setPaths([tempPath])
+
+    jasmine.unspy(TextMateLanguageMode.prototype, 'tokenizeInBackground')
+
+    jasmine.useRealClock()
+    jasmine.attachToDOM(atom.views.getView(atom.workspace))
+
+    waitsForPromise(() => atom.packages.activatePackage('markdown-preview'))
+
+    waitsForPromise(() => atom.packages.activatePackage('language-gfm'))
+
+    runs(() =>
+      spyOn(atom.packages, 'hasActivatedInitialPackages').andReturn(true)
+    )
+  })
+
+  const expectPreviewInSplitPane = function () {
+    waitsFor(() => atom.workspace.getCenter().getPanes().length === 2)
+
+    waitsFor(
+      'markdown preview to be created',
+      () =>
+        (preview = atom.workspace
+          .getCenter()
+          .getPanes()[1]
+          .getActiveItem())
+    )
+
+    runs(() => {
+      expect(preview).toBeInstanceOf(MarkdownPreviewView)
+      expect(preview.getPath()).toBe(
+        atom.workspace.getActivePaneItem().getPath()
+      )
+    })
+  }
+
+  describe('when a preview has not been created for the file', function () {
+    it('displays a markdown preview in a split pane', function () {
+      waitsForPromise(() => atom.workspace.open('subdir/file.markdown'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+
+      runs(() => {
+        const [editorPane] = atom.workspace.getCenter().getPanes()
+        expect(editorPane.getItems()).toHaveLength(1)
+        expect(editorPane.isActive()).toBe(true)
+      })
+    })
+
+    describe("when the editor's path does not exist", function () {
+      it('splits the current pane to the right with a markdown preview for the file', function () {
+        waitsForPromise(() => atom.workspace.open('new.markdown'))
+        runs(() =>
+          atom.commands.dispatch(
+            atom.workspace.getActiveTextEditor().getElement(),
+            'markdown-preview:toggle'
+          )
+        )
+        expectPreviewInSplitPane()
+      })
+    })
+
+    describe('when the editor does not have a path', function () {
+      it('splits the current pane to the right with a markdown preview for the file', function () {
+        waitsForPromise(() => atom.workspace.open(''))
+        runs(() =>
+          atom.commands.dispatch(
+            atom.workspace.getActiveTextEditor().getElement(),
+            'markdown-preview:toggle'
+          )
+        )
+        expectPreviewInSplitPane()
+      })
+    })
+
+    describe('when the path contains a space', function () {
+      it('renders the preview', function () {
+        waitsForPromise(() => atom.workspace.open('subdir/file with space.md'))
+        runs(() =>
+          atom.commands.dispatch(
+            atom.workspace.getActiveTextEditor().getElement(),
+            'markdown-preview:toggle'
+          )
+        )
+        expectPreviewInSplitPane()
+      })
+    })
+
+    describe('when the path contains accented characters', function () {
+      it('renders the preview', function () {
+        waitsForPromise(() => atom.workspace.open('subdir/áccéntéd.md'))
+        runs(() =>
+          atom.commands.dispatch(
+            atom.workspace.getActiveTextEditor().getElement(),
+            'markdown-preview:toggle'
+          )
+        )
+        expectPreviewInSplitPane()
+      })
+    })
+  })
+
+  describe('when a preview has been created for the file', function () {
+    beforeEach(function () {
+      waitsForPromise(() => atom.workspace.open('subdir/file.markdown'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+    })
+
+    it('closes the existing preview when toggle is triggered a second time on the editor', function () {
+      atom.commands.dispatch(
+        atom.workspace.getActiveTextEditor().getElement(),
+        'markdown-preview:toggle'
+      )
+
+      const [editorPane, previewPane] = atom.workspace.getCenter().getPanes()
+      expect(editorPane.isActive()).toBe(true)
+      expect(previewPane.getActiveItem()).toBeUndefined()
+    })
+
+    it('closes the existing preview when toggle is triggered on it and it has focus', function () {
+      const [editorPane, previewPane] = atom.workspace.getCenter().getPanes()
+      previewPane.activate()
+
+      atom.commands.dispatch(
+        editorPane.getActiveItem().getElement(),
+        'markdown-preview:toggle'
+      )
+      expect(previewPane.getActiveItem()).toBeUndefined()
+    })
+
+    describe('when the editor is modified', function () {
+      it('re-renders the preview', function () {
+        spyOn(preview, 'showLoading')
+
+        const markdownEditor = atom.workspace.getActiveTextEditor()
+        markdownEditor.setText('Hey!')
+
+        waitsFor(() => preview.element.textContent.includes('Hey!'))
+
+        runs(() => expect(preview.showLoading).not.toHaveBeenCalled())
+      })
+
+      it('invokes ::onDidChangeMarkdown listeners', function () {
+        let listener
+        const markdownEditor = atom.workspace.getActiveTextEditor()
+        preview.onDidChangeMarkdown(
+          (listener = jasmine.createSpy('didChangeMarkdownListener'))
+        )
+
+        runs(() => markdownEditor.setText('Hey!'))
+
+        waitsFor(
+          '::onDidChangeMarkdown handler to be called',
+          () => listener.callCount > 0
+        )
+      })
+
+      describe('when the preview is in the active pane but is not the active item', function () {
+        it('re-renders the preview but does not make it active', function () {
+          const markdownEditor = atom.workspace.getActiveTextEditor()
+          const previewPane = atom.workspace.getCenter().getPanes()[1]
+          previewPane.activate()
+
+          waitsForPromise(() => atom.workspace.open())
+
+          runs(() => markdownEditor.setText('Hey!'))
+
+          waitsFor(() => preview.element.textContent.includes('Hey!'))
+
+          runs(() => {
+            expect(previewPane.isActive()).toBe(true)
+            expect(previewPane.getActiveItem()).not.toBe(preview)
+          })
+        })
+      })
+
+      describe('when the preview is not the active item and not in the active pane', function () {
+        it('re-renders the preview and makes it active', function () {
+          const markdownEditor = atom.workspace.getActiveTextEditor()
+          const [
+            editorPane,
+            previewPane
+          ] = atom.workspace.getCenter().getPanes()
+          previewPane.splitRight({ copyActiveItem: true })
+          previewPane.activate()
+
+          waitsForPromise(() => atom.workspace.open())
+
+          runs(() => {
+            editorPane.activate()
+            markdownEditor.setText('Hey!')
+          })
+
+          waitsFor(() => preview.element.textContent.includes('Hey!'))
+
+          runs(() => {
+            expect(editorPane.isActive()).toBe(true)
+            expect(previewPane.getActiveItem()).toBe(preview)
+          })
+        })
+      })
+
+      describe('when the liveUpdate config is set to false', function () {
+        it('only re-renders the markdown when the editor is saved, not when the contents are modified', function () {
+          atom.config.set('markdown-preview.liveUpdate', false)
+
+          const didStopChangingHandler = jasmine.createSpy(
+            'didStopChangingHandler'
+          )
+          atom.workspace
+            .getActiveTextEditor()
+            .getBuffer()
+            .onDidStopChanging(didStopChangingHandler)
+          atom.workspace.getActiveTextEditor().setText('ch ch changes')
+
+          waitsFor(() => didStopChangingHandler.callCount > 0)
+
+          runs(() => {
+            expect(preview.element.textContent).not.toMatch('ch ch changes')
+            atom.workspace.getActiveTextEditor().save()
+          })
+
+          waitsFor(() => preview.element.textContent.includes('ch ch changes'))
+        })
+      })
+    })
+
+    describe('when the original preview is split', function () {
+      it('renders another preview in the new split pane', function () {
+        atom.workspace
+          .getCenter()
+          .getPanes()[1]
+          .splitRight({ copyActiveItem: true })
+
+        expect(atom.workspace.getCenter().getPanes()).toHaveLength(3)
+
+        waitsFor(
+          'split markdown preview to be created',
+          () =>
+            (preview = atom.workspace
+              .getCenter()
+              .getPanes()[2]
+              .getActiveItem())
+        )
+
+        runs(() => {
+          expect(preview).toBeInstanceOf(MarkdownPreviewView)
+          expect(preview.getPath()).toBe(
+            atom.workspace.getActivePaneItem().getPath()
+          )
+        })
+      })
+    })
+
+    describe('when the editor is destroyed', function () {
+      beforeEach(() =>
+        atom.workspace
+          .getCenter()
+          .getPanes()[0]
+          .destroyActiveItem()
+      )
+
+      it('falls back to using the file path', function () {
+        atom.workspace
+          .getCenter()
+          .getPanes()[1]
+          .activate()
+        expect(preview.file.getPath()).toBe(
+          atom.workspace.getActivePaneItem().getPath()
+        )
+      })
+
+      it('continues to update the preview if the file is changed on #win32 and #darwin', function () {
+        let listener
+        const titleChangedCallback = jasmine.createSpy('titleChangedCallback')
+
+        runs(() => {
+          expect(preview.getTitle()).toBe('file.markdown Preview')
+          preview.onDidChangeTitle(titleChangedCallback)
+          fs.renameSync(
+            preview.getPath(),
+            path.join(path.dirname(preview.getPath()), 'file2.md')
+          )
+        })
+
+        waitsFor(
+          'title to update',
+          () => preview.getTitle() === 'file2.md Preview'
+        )
+
+        runs(() => expect(titleChangedCallback).toHaveBeenCalled())
+
+        spyOn(preview, 'showLoading')
+
+        runs(() => fs.writeFileSync(preview.getPath(), 'Hey!'))
+
+        waitsFor('contents to update', () =>
+          preview.element.textContent.includes('Hey!')
+        )
+
+        runs(() => expect(preview.showLoading).not.toHaveBeenCalled())
+
+        preview.onDidChangeMarkdown(
+          (listener = jasmine.createSpy('didChangeMarkdownListener'))
+        )
+
+        runs(() => fs.writeFileSync(preview.getPath(), 'Hey!'))
+
+        waitsFor(
+          '::onDidChangeMarkdown handler to be called',
+          () => listener.callCount > 0
+        )
+      })
+
+      it('allows a new split pane of the preview to be created', function () {
+        atom.workspace
+          .getCenter()
+          .getPanes()[1]
+          .splitRight({ copyActiveItem: true })
+
+        expect(atom.workspace.getCenter().getPanes()).toHaveLength(3)
+
+        waitsFor(
+          'split markdown preview to be created',
+          () =>
+            (preview = atom.workspace
+              .getCenter()
+              .getPanes()[2]
+              .getActiveItem())
+        )
+
+        runs(() => {
+          expect(preview).toBeInstanceOf(MarkdownPreviewView)
+          expect(preview.getPath()).toBe(
+            atom.workspace.getActivePaneItem().getPath()
+          )
+        })
+      })
+    })
+  })
+
+  describe('when the markdown preview view is requested by file URI', function () {
+    it('opens a preview editor and watches the file for changes', function () {
+      waitsForPromise('atom.workspace.open promise to be resolved', () =>
+        atom.workspace.open(
+          `markdown-preview://${atom.project
+            .getDirectories()[0]
+            .resolve('subdir/file.markdown')}`
+        )
+      )
+
+      runs(() => {
+        preview = atom.workspace.getActivePaneItem()
+        expect(preview).toBeInstanceOf(MarkdownPreviewView)
+
+        spyOn(preview, 'renderMarkdownText')
+        preview.file.emitter.emit('did-change')
+      })
+
+      waitsFor(
+        'markdown to be re-rendered after file changed',
+        () => preview.renderMarkdownText.callCount > 0
+      )
+    })
+  })
+
+  describe("when the editor's grammar it not enabled for preview", function () {
+    it('does not open the markdown preview', function () {
+      atom.config.set('markdown-preview.grammars', [])
+
+      waitsForPromise(() => atom.workspace.open('subdir/file.markdown'))
+
+      runs(() => {
+        spyOn(atom.workspace, 'open').andCallThrough()
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+        expect(atom.workspace.open).not.toHaveBeenCalled()
+      })
+    })
+  })
+
+  describe("when the editor's path changes on #win32 and #darwin", function () {
+    it("updates the preview's title", function () {
+      const titleChangedCallback = jasmine.createSpy('titleChangedCallback')
+
+      waitsForPromise(() => atom.workspace.open('subdir/file.markdown'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+
+      expectPreviewInSplitPane()
+
+      runs(() => {
+        expect(preview.getTitle()).toBe('file.markdown Preview')
+        preview.onDidChangeTitle(titleChangedCallback)
+        fs.renameSync(
+          atom.workspace.getActiveTextEditor().getPath(),
+          path.join(
+            path.dirname(atom.workspace.getActiveTextEditor().getPath()),
+            'file2.md'
+          )
+        )
+      })
+
+      waitsFor(() => preview.getTitle() === 'file2.md Preview')
+
+      runs(() => expect(titleChangedCallback).toHaveBeenCalled())
+    })
+  })
+
+  describe('when the URI opened does not have a markdown-preview protocol', function () {
+    it('does not throw an error trying to decode the URI (regression)', function () {
+      waitsForPromise(() => atom.workspace.open('%'))
+
+      runs(() => expect(atom.workspace.getActiveTextEditor()).toBeTruthy())
+    })
+  })
+
+  describe('markdown-preview:toggle', function () {
+    beforeEach(() =>
+      waitsForPromise(() => atom.workspace.open('code-block.md'))
+    )
+
+    it('does not exist for text editors that are not set to a grammar defined in `markdown-preview.grammars`', function () {
+      atom.config.set('markdown-preview.grammars', ['source.weird-md'])
+      const editorElement = atom.workspace.getActiveTextEditor().getElement()
+      const commands = atom.commands
+        .findCommands({ target: editorElement })
+        .map(command => command.name)
+      expect(commands).not.toContain('markdown-preview:toggle')
+    })
+
+    it('exists for text editors that are set to a grammar defined in `markdown-preview.grammars`', function () {
+      atom.config.set('markdown-preview.grammars', ['source.gfm'])
+      const editorElement = atom.workspace.getActiveTextEditor().getElement()
+      const commands = atom.commands
+        .findCommands({ target: editorElement })
+        .map(command => command.name)
+      expect(commands).toContain('markdown-preview:toggle')
+    })
+
+    it('updates whenever the list of grammars changes', function () {
+      // Last two tests combined
+      atom.config.set('markdown-preview.grammars', ['source.gfm', 'text.plain'])
+      const editorElement = atom.workspace.getActiveTextEditor().getElement()
+      let commands = atom.commands
+        .findCommands({ target: editorElement })
+        .map(command => command.name)
+      expect(commands).toContain('markdown-preview:toggle')
+
+      atom.config.set('markdown-preview.grammars', [
+        'source.weird-md',
+        'text.plain'
+      ])
+      commands = atom.commands
+        .findCommands({ target: editorElement })
+        .map(command => command.name)
+      expect(commands).not.toContain('markdown-preview:toggle')
+    })
+  })
+
+  describe('when markdown-preview:copy-html is triggered', function () {
+    it('copies the HTML to the clipboard', function () {
+      waitsForPromise(() => atom.workspace.open('subdir/simple.md'))
+
+      waitsForPromise(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:copy-html'
+        )
+      )
+
+      runs(() => {
+        expect(atom.clipboard.read()).toBe(`\
+<p><em>italic</em></p>
+<p><strong>bold</strong></p>
+<p>encoding \u2192 issue</p>\
+`)
+
+        atom.workspace
+          .getActiveTextEditor()
+          .setSelectedBufferRange([[0, 0], [1, 0]])
+      })
+
+      waitsForPromise(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:copy-html'
+        )
+      )
+
+      runs(() =>
+        expect(atom.clipboard.read()).toBe(`\
+<p><em>italic</em></p>\
+`)
+      )
+    })
+
+    describe('code block tokenization', function () {
+      beforeEach(function () {
+        waitsForPromise(() => atom.packages.activatePackage('language-ruby'))
+
+        waitsForPromise(() => atom.packages.activatePackage('markdown-preview'))
+
+        waitsForPromise(() => atom.workspace.open('subdir/file.markdown'))
+
+        waitsForPromise(() =>
+          atom.commands.dispatch(
+            atom.workspace.getActiveTextEditor().getElement(),
+            'markdown-preview:copy-html'
+          )
+        )
+
+        runs(() => {
+          preview = document.createElement('div')
+          preview.innerHTML = atom.clipboard.read()
+        })
+      })
+
+      describe("when the code block's fence name has a matching grammar", function () {
+        it('tokenizes the code block with the grammar', function () {
+          expect(
+            preview.querySelector('pre span.entity.name.function.ruby')
+          ).toBeDefined()
+        })
+      })
+
+      describe("when the code block's fence name doesn't have a matching grammar", function () {
+        it('does not tokenize the code block', function () {
+          expect(
+            preview.querySelectorAll(
+              'pre.lang-kombucha .line .syntax--null-grammar'
+            ).length
+          ).toBe(2)
+        })
+      })
+
+      describe('when the code block contains empty lines', function () {
+        it("doesn't remove the empty lines", function () {
+          expect(preview.querySelector('pre.lang-python').children.length).toBe(
+            6
+          )
+          expect(
+            preview
+              .querySelector('pre.lang-python div:nth-child(2)')
+              .textContent.trim()
+          ).toBe('')
+          expect(
+            preview
+              .querySelector('pre.lang-python div:nth-child(4)')
+              .textContent.trim()
+          ).toBe('')
+          expect(
+            preview
+              .querySelector('pre.lang-python div:nth-child(5)')
+              .textContent.trim()
+          ).toBe('')
+        })
+      })
+
+      describe('when the code block is nested in a list', function () {
+        it('detects and styles the block', function () {
+          expect(preview.querySelector('pre.lang-javascript')).toHaveClass(
+            'editor-colors'
+          )
+        })
+      })
+    })
+  })
+
+  describe('sanitization', function () {
+    it('removes script tags and attributes that commonly contain inline scripts', function () {
+      waitsForPromise(() => atom.workspace.open('subdir/evil.md'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+
+      runs(() =>
+        expect(preview.element.innerHTML).toBe(`\
+<p>hello</p>
+
+
+<img>
+world\
+`)
+      )
+    })
+
+    it('remove any <!doctype> tag on markdown files', function () {
+      waitsForPromise(() => atom.workspace.open('subdir/doctype-tag.md'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+
+      runs(() =>
+        expect(preview.element.innerHTML).toBe(`\
+<p>content
+</p>\
+`)
+      )
+    })
+  })
+
+  describe('when the markdown contains an <html> tag', function () {
+    it('does not throw an exception', function () {
+      waitsForPromise(() => atom.workspace.open('subdir/html-tag.md'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+
+      runs(() => expect(preview.element.innerHTML).toBe('content'))
+    })
+  })
+
+  describe('when the markdown contains a <pre> tag', function () {
+    it('does not throw an exception', function () {
+      waitsForPromise(() => atom.workspace.open('subdir/pre-tag.md'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+
+      runs(() =>
+        expect(preview.element.querySelector('atom-text-editor')).toBeDefined()
+      )
+    })
+  })
+
+  describe('when there is an image with a relative path and no directory', function () {
+    it('does not alter the image src', function () {
+      for (let projectPath of atom.project.getPaths()) {
+        atom.project.removePath(projectPath)
+      }
+
+      const filePath = path.join(temp.mkdirSync('atom'), 'bar.md')
+      fs.writeFileSync(filePath, '![rel path](/foo.png)')
+
+      waitsForPromise(() => atom.workspace.open(filePath))
+
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+
+      runs(() =>
+        expect(preview.element.innerHTML).toBe(`\
+<p><img alt="rel path" src="/foo.png"></p>\
+`)
+      )
+    })
+  })
+
+  describe('GitHub style markdown preview', function () {
+    beforeEach(() => atom.config.set('markdown-preview.useGitHubStyle', false))
+
+    it('renders markdown using the default style when GitHub styling is disabled', function () {
+      waitsForPromise(() => atom.workspace.open('subdir/simple.md'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+
+      runs(() =>
+        expect(preview.element.getAttribute('data-use-github-style')).toBeNull()
+      )
+    })
+
+    it('renders markdown using the GitHub styling when enabled', function () {
+      atom.config.set('markdown-preview.useGitHubStyle', true)
+
+      waitsForPromise(() => atom.workspace.open('subdir/simple.md'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+
+      runs(() =>
+        expect(preview.element.getAttribute('data-use-github-style')).toBe('')
+      )
+    })
+
+    it('updates the rendering style immediately when the configuration is changed', function () {
+      waitsForPromise(() => atom.workspace.open('subdir/simple.md'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+
+      runs(() => {
+        expect(preview.element.getAttribute('data-use-github-style')).toBeNull()
+
+        atom.config.set('markdown-preview.useGitHubStyle', true)
+        expect(
+          preview.element.getAttribute('data-use-github-style')
+        ).not.toBeNull()
+
+        atom.config.set('markdown-preview.useGitHubStyle', false)
+        expect(preview.element.getAttribute('data-use-github-style')).toBeNull()
+      })
+    })
+  })
+
+  describe('when markdown-preview:save-as-html is triggered', function () {
+    beforeEach(function () {
+      waitsForPromise(() => atom.workspace.open('subdir/simple.markdown'))
+      runs(() =>
+        atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:toggle'
+        )
+      )
+      expectPreviewInSplitPane()
+    })
+
+    it('saves the HTML when it is triggered and the editor has focus', function () {
+      const [editorPane] = atom.workspace.getCenter().getPanes()
+      editorPane.activate()
+
+      const outputPath = temp.path({ suffix: '.html' })
+      expect(fs.existsSync(outputPath)).toBe(false)
+
+      runs(() => {
+        spyOn(preview, 'getSaveDialogOptions').andReturn({
+          defaultPath: outputPath
+        })
+        spyOn(atom.applicationDelegate, 'showSaveDialog').andCallFake(function (
+          options,
+          callback
+        ) {
+          if (typeof callback === 'function') {
+            callback(options.defaultPath)
+          }
+          // TODO: When https://github.com/atom/atom/pull/16245 lands remove the return
+          // and the existence check on the callback
+          return options.defaultPath
+        })
+        return atom.commands.dispatch(
+          atom.workspace.getActiveTextEditor().getElement(),
+          'markdown-preview:save-as-html'
+        )
+      })
+
+      waitsFor(() => fs.existsSync(outputPath))
+
+      runs(() => expect(fs.existsSync(outputPath)).toBe(true))
+    })
+
+    it('saves the HTML when it is triggered and the preview pane has focus', function () {
+      const [editorPane, previewPane] = atom.workspace.getCenter().getPanes()
+      previewPane.activate()
+
+      const outputPath = temp.path({ suffix: '.html' })
+      expect(fs.existsSync(outputPath)).toBe(false)
+
+      runs(() => {
+        spyOn(preview, 'getSaveDialogOptions').andReturn({
+          defaultPath: outputPath
+        })
+        spyOn(atom.applicationDelegate, 'showSaveDialog').andCallFake(function (
+          options,
+          callback
+        ) {
+          if (typeof callback === 'function') {
+            callback(options.defaultPath)
+          }
+          // TODO: When https://github.com/atom/atom/pull/16245 lands remove the return
+          // and the existence check on the callback
+          return options.defaultPath
+        })
+        return atom.commands.dispatch(
+          editorPane.getActiveItem().getElement(),
+          'markdown-preview:save-as-html'
+        )
+      })
+
+      waitsFor(() => fs.existsSync(outputPath))
+
+      runs(() => expect(fs.existsSync(outputPath)).toBe(true))
+    })
+  })
+})
diff --git a/packages/markdown-preview/spec/markdown-preview-view-spec.js b/packages/markdown-preview/spec/markdown-preview-view-spec.js
new file mode 100644
index 000000000..45a81eaee
--- /dev/null
+++ b/packages/markdown-preview/spec/markdown-preview-view-spec.js
@@ -0,0 +1,604 @@
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const path = require('path')
+const fs = require('fs-plus')
+const temp = require('temp').track()
+const url = require('url')
+const { TextEditor } = require('atom')
+const MarkdownPreviewView = require('../lib/markdown-preview-view')
+const TextMateLanguageMode = new TextEditor().getBuffer().getLanguageMode()
+  .constructor
+
+describe('MarkdownPreviewView', function () {
+  let preview = null
+
+  beforeEach(function () {
+    // Makes _.debounce work
+    jasmine.useRealClock()
+
+    jasmine.unspy(TextMateLanguageMode.prototype, 'tokenizeInBackground')
+
+    spyOn(atom.packages, 'hasActivatedInitialPackages').andReturn(true)
+
+    const filePath = atom.project
+      .getDirectories()[0]
+      .resolve('subdir/file.markdown')
+    preview = new MarkdownPreviewView({ filePath })
+    jasmine.attachToDOM(preview.element)
+
+    waitsForPromise(() => atom.packages.activatePackage('language-ruby'))
+
+    waitsForPromise(() => atom.packages.activatePackage('language-javascript'))
+
+    waitsForPromise(() => atom.packages.activatePackage('markdown-preview'))
+  })
+
+  afterEach(() => preview.destroy())
+
+  describe('::constructor', function () {
+    it('shows a loading spinner and renders the markdown', function () {
+      preview.showLoading()
+      expect(preview.element.querySelector('.markdown-spinner')).toBeDefined()
+
+      waitsForPromise(() => preview.renderMarkdown())
+
+      runs(() => expect(preview.element.querySelector('.emoji')).toBeDefined())
+    })
+
+    it('shows an error message when there is an error', function () {
+      preview.showError('Not a real file')
+      expect(preview.element.textContent).toMatch('Failed')
+    })
+
+    it('rerenders the markdown and the scrollTop stays the same', function () {
+      waitsForPromise(() => preview.renderMarkdown())
+
+      runs(function () {
+        preview.element.style.maxHeight = '10px'
+        preview.element.scrollTop = 24
+        expect(preview.element.scrollTop).toBe(24)
+      })
+
+      waitsForPromise(() => preview.renderMarkdown())
+
+      runs(() => expect(preview.element.scrollTop).toBe(24))
+    })
+  })
+
+  describe('serialization', function () {
+    let newPreview = null
+
+    afterEach(function () {
+      if (newPreview) {
+        newPreview.destroy()
+      }
+    })
+
+    it('recreates the preview when serialized/deserialized', function () {
+      newPreview = atom.deserializers.deserialize(preview.serialize())
+      jasmine.attachToDOM(newPreview.element)
+      expect(newPreview.getPath()).toBe(preview.getPath())
+    })
+
+    it('does not recreate a preview when the file no longer exists', function () {
+      const filePath = path.join(temp.mkdirSync('markdown-preview-'), 'foo.md')
+      fs.writeFileSync(filePath, '# Hi')
+
+      preview.destroy()
+      preview = new MarkdownPreviewView({ filePath })
+      const serialized = preview.serialize()
+      fs.removeSync(filePath)
+
+      newPreview = atom.deserializers.deserialize(serialized)
+      expect(newPreview).toBeUndefined()
+    })
+
+    it('serializes the editor id when opened for an editor', function () {
+      preview.destroy()
+
+      waitsForPromise(() => atom.workspace.open('new.markdown'))
+
+      runs(function () {
+        preview = new MarkdownPreviewView({
+          editorId: atom.workspace.getActiveTextEditor().id
+        })
+
+        jasmine.attachToDOM(preview.element)
+        expect(preview.getPath()).toBe(
+          atom.workspace.getActiveTextEditor().getPath()
+        )
+
+        newPreview = atom.deserializers.deserialize(preview.serialize())
+        jasmine.attachToDOM(newPreview.element)
+        expect(newPreview.getPath()).toBe(preview.getPath())
+      })
+    })
+  })
+
+  describe('code block conversion to atom-text-editor tags', function () {
+    beforeEach(function () {
+      waitsForPromise(() => preview.renderMarkdown())
+    })
+
+    it('removes line decorations on rendered code blocks', function () {
+      const editor = preview.element.querySelector(
+        "atom-text-editor[data-grammar='text plain null-grammar']"
+      )
+      const decorations = editor
+        .getModel()
+        .getDecorations({ class: 'cursor-line', type: 'line' })
+      expect(decorations.length).toBe(0)
+    })
+
+    it('sets the editors as read-only', function () {
+      preview.element
+        .querySelectorAll('atom-text-editor')
+        .forEach(editorElement =>
+          expect(editorElement.getAttribute('tabindex')).toBeNull()
+        )
+    })
+
+    describe("when the code block's fence name has a matching grammar", function () {
+      it('assigns the grammar on the atom-text-editor', function () {
+        const rubyEditor = preview.element.querySelector(
+          "atom-text-editor[data-grammar='source ruby']"
+        )
+        expect(rubyEditor.getModel().getText()).toBe(`\
+def func
+  x = 1
+end\
+`)
+
+        // nested in a list item
+        const jsEditor = preview.element.querySelector(
+          "atom-text-editor[data-grammar='source js']"
+        )
+        expect(jsEditor.getModel().getText()).toBe(`\
+if a === 3 {
+b = 5
+}\
+`)
+      })
+    })
+
+    describe("when the code block's fence name doesn't have a matching grammar", function () {
+      it('does not assign a specific grammar', function () {
+        const plainEditor = preview.element.querySelector(
+          "atom-text-editor[data-grammar='text plain null-grammar']"
+        )
+        expect(plainEditor.getModel().getText()).toBe(`\
+function f(x) {
+  return x++;
+}\
+`)
+      })
+    })
+
+    describe('when an editor cannot find the grammar that is later loaded', function () {
+      it('updates the editor grammar', function () {
+        let renderSpy = null
+
+        if (typeof atom.grammars.onDidRemoveGrammar !== 'function') {
+          // TODO: Remove once atom.grammars.onDidRemoveGrammar is released
+          waitsForPromise(() => atom.packages.activatePackage('language-gfm'))
+        }
+
+        runs(
+          () => (renderSpy = spyOn(preview, 'renderMarkdown').andCallThrough())
+        )
+
+        waitsForPromise(() => atom.packages.deactivatePackage('language-ruby'))
+
+        waitsFor(
+          'renderMarkdown to be called after disabling a language',
+          () => renderSpy.callCount === 1
+        )
+
+        runs(function () {
+          const rubyEditor = preview.element.querySelector(
+            "atom-text-editor[data-grammar='source ruby']"
+          )
+          expect(rubyEditor).toBeNull()
+        })
+
+        waitsForPromise(() => atom.packages.activatePackage('language-ruby'))
+
+        waitsFor(
+          'renderMarkdown to be called after enabling a language',
+          () => renderSpy.callCount === 2
+        )
+
+        runs(function () {
+          const rubyEditor = preview.element.querySelector(
+            "atom-text-editor[data-grammar='source ruby']"
+          )
+          expect(rubyEditor.getModel().getText()).toBe(`\
+def func
+  x = 1
+end\
+`)
+        })
+      })
+    })
+  })
+
+  describe('image resolving', function () {
+    beforeEach(function () {
+      waitsForPromise(() => preview.renderMarkdown())
+    })
+
+    describe('when the image uses a relative path', function () {
+      it('resolves to a path relative to the file', function () {
+        const image = preview.element.querySelector('img[alt=Image1]')
+        expect(image.getAttribute('src')).toBe(
+          atom.project.getDirectories()[0].resolve('subdir/image1.png')
+        )
+      })
+    })
+
+    describe('when the image uses an absolute path that does not exist', function () {
+      it('resolves to a path relative to the project root', function () {
+        const image = preview.element.querySelector('img[alt=Image2]')
+        expect(image.src).toMatch(
+          url.parse(atom.project.getDirectories()[0].resolve('tmp/image2.png'))
+        )
+      })
+    })
+
+    describe('when the image uses an absolute path that exists', function () {
+      it("doesn't change the URL when allowUnsafeProtocols is true", function () {
+        preview.destroy()
+
+        atom.config.set('markdown-preview.allowUnsafeProtocols', true)
+
+        const filePath = path.join(temp.mkdirSync('atom'), 'foo.md')
+        fs.writeFileSync(filePath, `![absolute](${filePath})`)
+        preview = new MarkdownPreviewView({ filePath })
+        jasmine.attachToDOM(preview.element)
+
+        waitsForPromise(() => preview.renderMarkdown())
+
+        runs(() =>
+          expect(
+            preview.element.querySelector('img[alt=absolute]').src
+          ).toMatch(url.parse(filePath))
+        )
+      })
+    })
+
+    it('removes the URL when allowUnsafeProtocols is false', function () {
+      preview.destroy()
+
+      atom.config.set('markdown-preview.allowUnsafeProtocols', false)
+
+      const filePath = path.join(temp.mkdirSync('atom'), 'foo.md')
+      fs.writeFileSync(filePath, `![absolute](${filePath})`)
+      preview = new MarkdownPreviewView({ filePath })
+      jasmine.attachToDOM(preview.element)
+
+      waitsForPromise(() => preview.renderMarkdown())
+
+      runs(() =>
+        expect(preview.element.querySelector('img[alt=absolute]').src).toMatch(
+          ''
+        )
+      )
+    })
+
+    describe('when the image uses a web URL', function () {
+      it("doesn't change the URL", function () {
+        const image = preview.element.querySelector('img[alt=Image3]')
+        expect(image.src).toBe('http://github.com/image3.png')
+      })
+    })
+  })
+
+  describe('gfm newlines', function () {
+    describe('when gfm newlines are not enabled', function () {
+      it('creates a single paragraph with <br>', function () {
+        atom.config.set('markdown-preview.breakOnSingleNewline', false)
+
+        waitsForPromise(() => preview.renderMarkdown())
+
+        runs(() =>
+          expect(
+            preview.element.querySelectorAll('p:last-child br').length
+          ).toBe(0)
+        )
+      })
+    })
+
+    describe('when gfm newlines are enabled', function () {
+      it('creates a single paragraph with no <br>', function () {
+        atom.config.set('markdown-preview.breakOnSingleNewline', true)
+
+        waitsForPromise(() => preview.renderMarkdown())
+
+        runs(() =>
+          expect(
+            preview.element.querySelectorAll('p:last-child br').length
+          ).toBe(1)
+        )
+      })
+    })
+  })
+
+  describe('yaml front matter', function () {
+    it('creates a table with the YAML variables', function () {
+      atom.config.set('markdown-preview.breakOnSingleNewline', true)
+
+      waitsForPromise(() => preview.renderMarkdown())
+
+      runs(() => {
+        expect(
+          [...preview.element.querySelectorAll('table th')].map(
+            el => el.textContent
+          )
+        ).toEqual(['variable1', 'array'])
+        expect(
+          [...preview.element.querySelectorAll('table td')].map(
+            el => el.textContent
+          )
+        ).toEqual(['value1', 'foo,bar'])
+      })
+    })
+  })
+
+  describe('text selections', function () {
+    it('adds the `has-selection` class to the preview depending on if there is a text selection', function () {
+      expect(preview.element.classList.contains('has-selection')).toBe(false)
+
+      const selection = window.getSelection()
+      selection.removeAllRanges()
+      selection.selectAllChildren(document.querySelector('atom-text-editor'))
+
+      waitsFor(
+        () => preview.element.classList.contains('has-selection') === true
+      )
+
+      runs(() => selection.removeAllRanges())
+
+      waitsFor(
+        () => preview.element.classList.contains('has-selection') === false
+      )
+    })
+  })
+
+  describe('when core:save-as is triggered', function () {
+    beforeEach(function () {
+      preview.destroy()
+      const filePath = atom.project
+        .getDirectories()[0]
+        .resolve('subdir/code-block.md')
+      preview = new MarkdownPreviewView({ filePath })
+      // Add to workspace for core:save-as command to be propagated up to the workspace
+      waitsForPromise(() => atom.workspace.open(preview))
+      runs(() => jasmine.attachToDOM(atom.views.getView(atom.workspace)))
+    })
+
+    it('saves the rendered HTML and opens it', function () {
+      const outputPath = fs.realpathSync(temp.mkdirSync()) + 'output.html'
+
+      const createRule = (selector, css) => ({
+        selectorText: selector,
+        cssText: `${selector} ${css}`
+      })
+      const markdownPreviewStyles = [
+        {
+          rules: [createRule('.markdown-preview', '{ color: orange; }')]
+        },
+        {
+          rules: [
+            createRule('.not-included', '{ color: green; }'),
+            createRule('.markdown-preview :host', '{ color: purple; }')
+          ]
+        }
+      ]
+
+      const atomTextEditorStyles = [
+        'atom-text-editor .line { color: brown; }\natom-text-editor .number { color: cyan; }',
+        'atom-text-editor :host .something { color: black; }',
+        'atom-text-editor .hr { background: url(atom://markdown-preview/assets/hr.png); }'
+      ]
+
+      waitsForPromise(() => preview.renderMarkdown())
+
+      runs(() => {
+        expect(fs.isFileSync(outputPath)).toBe(false)
+        spyOn(preview, 'getSaveDialogOptions').andReturn({
+          defaultPath: outputPath
+        })
+        spyOn(atom.applicationDelegate, 'showSaveDialog').andCallFake(function (
+          options,
+          callback
+        ) {
+          if (typeof callback === 'function') {
+            callback(options.defaultPath)
+          }
+          // TODO: When https://github.com/atom/atom/pull/16245 lands remove the return
+          // and the existence check on the callback
+          return options.defaultPath
+        })
+        spyOn(preview, 'getDocumentStyleSheets').andReturn(
+          markdownPreviewStyles
+        )
+        spyOn(preview, 'getTextEditorStyles').andReturn(atomTextEditorStyles)
+      })
+
+      waitsForPromise(() =>
+        atom.commands.dispatch(preview.element, 'core:save-as')
+      )
+
+      waitsFor(() => {
+        const activeEditor = atom.workspace.getActiveTextEditor()
+        return activeEditor && activeEditor.getPath() === outputPath
+      })
+
+      runs(() => {
+        const element = document.createElement('div')
+        element.innerHTML = fs.readFileSync(outputPath)
+        expect(element.querySelector('h1').innerText).toBe('Code Block')
+        expect(
+          element.querySelector(
+            '.line .syntax--source.syntax--js .syntax--constant.syntax--numeric'
+          ).innerText
+        ).toBe('3')
+        expect(
+          element.querySelector(
+            '.line .syntax--source.syntax--js .syntax--keyword.syntax--control'
+          ).innerText
+        ).toBe('if')
+        expect(
+          element.querySelector(
+            '.line .syntax--source.syntax--js .syntax--constant.syntax--numeric'
+          ).innerText
+        ).toBe('3')
+      })
+    })
+
+    describe('text editor style extraction', function () {
+      let [extractedStyles] = []
+
+      const textEditorStyle = '.editor-style .extraction-test { color: blue; }'
+      const unrelatedStyle = '.something else { color: red; }'
+
+      beforeEach(function () {
+        atom.styles.addStyleSheet(textEditorStyle, {
+          context: 'atom-text-editor'
+        })
+
+        atom.styles.addStyleSheet(unrelatedStyle, {
+          context: 'unrelated-context'
+        })
+
+        return (extractedStyles = preview.getTextEditorStyles())
+      })
+
+      it('returns an array containing atom-text-editor css style strings', function () {
+        expect(extractedStyles.indexOf(textEditorStyle)).toBeGreaterThan(-1)
+      })
+
+      it('does not return other styles', function () {
+        expect(extractedStyles.indexOf(unrelatedStyle)).toBe(-1)
+      })
+    })
+  })
+
+  describe('when core:copy is triggered', function () {
+    beforeEach(function () {
+      preview.destroy()
+      preview.element.remove()
+
+      const filePath = atom.project
+        .getDirectories()[0]
+        .resolve('subdir/code-block.md')
+      preview = new MarkdownPreviewView({ filePath })
+      jasmine.attachToDOM(preview.element)
+
+      waitsForPromise(() => preview.renderMarkdown())
+    })
+
+    describe('when there is no text selected', function () {
+      it('copies the rendered HTML of the entire Markdown document to the clipboard', function () {
+        expect(atom.clipboard.read()).toBe('initial clipboard content')
+
+        waitsForPromise(() =>
+          atom.commands.dispatch(preview.element, 'core:copy')
+        )
+
+        runs(() => {
+          const element = document.createElement('div')
+          element.innerHTML = atom.clipboard.read()
+          expect(element.querySelector('h1').innerText).toBe('Code Block')
+          expect(
+            element.querySelector(
+              '.line .syntax--source.syntax--js .syntax--constant.syntax--numeric'
+            ).innerText
+          ).toBe('3')
+          expect(
+            element.querySelector(
+              '.line .syntax--source.syntax--js .syntax--keyword.syntax--control'
+            ).innerText
+          ).toBe('if')
+          expect(
+            element.querySelector(
+              '.line .syntax--source.syntax--js .syntax--constant.syntax--numeric'
+            ).innerText
+          ).toBe('3')
+        })
+      })
+    })
+
+    describe('when there is a text selection', function () {
+      it('directly copies the selection to the clipboard', function () {
+        const selection = window.getSelection()
+        selection.removeAllRanges()
+        const range = document.createRange()
+        range.setStart(document.querySelector('atom-text-editor'), 0)
+        range.setEnd(document.querySelector('p').firstChild, 3)
+        selection.addRange(range)
+
+        atom.commands.dispatch(preview.element, 'core:copy')
+        const clipboardText = atom.clipboard.read()
+
+        expect(clipboardText).toBe(`\
+if a === 3 {
+  b = 5
+}
+
+enc\
+`)
+      })
+    })
+  })
+
+  describe('when markdown-preview:select-all is triggered', function () {
+    it('selects the entire Markdown preview', function () {
+      const filePath = atom.project
+        .getDirectories()[0]
+        .resolve('subdir/code-block.md')
+      const preview2 = new MarkdownPreviewView({ filePath })
+      jasmine.attachToDOM(preview2.element)
+
+      waitsForPromise(() => preview.renderMarkdown())
+
+      runs(function () {
+        atom.commands.dispatch(preview.element, 'markdown-preview:select-all')
+        const { commonAncestorContainer } = window.getSelection().getRangeAt(0)
+        expect(commonAncestorContainer).toEqual(preview.element)
+      })
+
+      waitsForPromise(() => preview2.renderMarkdown())
+
+      runs(() => {
+        atom.commands.dispatch(preview2.element, 'markdown-preview:select-all')
+        const selection = window.getSelection()
+        expect(selection.rangeCount).toBe(1)
+        const { commonAncestorContainer } = selection.getRangeAt(0)
+        expect(commonAncestorContainer).toEqual(preview2.element)
+      })
+    })
+  })
+
+  describe('when markdown-preview:zoom-in or markdown-preview:zoom-out are triggered', function () {
+    it('increases or decreases the zoom level of the markdown preview element', function () {
+      jasmine.attachToDOM(preview.element)
+
+      waitsForPromise(() => preview.renderMarkdown())
+
+      runs(function () {
+        const originalZoomLevel = getComputedStyle(preview.element).zoom
+        atom.commands.dispatch(preview.element, 'markdown-preview:zoom-in')
+        expect(getComputedStyle(preview.element).zoom).toBeGreaterThan(
+          originalZoomLevel
+        )
+        atom.commands.dispatch(preview.element, 'markdown-preview:zoom-out')
+        expect(getComputedStyle(preview.element).zoom).toBe(originalZoomLevel)
+      })
+    })
+  })
+})
diff --git a/packages/markdown-preview/styles/markdown-preview-default.less b/packages/markdown-preview/styles/markdown-preview-default.less
new file mode 100644
index 000000000..25f7ade6d
--- /dev/null
+++ b/packages/markdown-preview/styles/markdown-preview-default.less
@@ -0,0 +1,156 @@
+
+// Default Markdown Preview styles
+
+// These are the default Markdown Preview styles.
+// They use the syntax-variables to adapt to the color scheme of syntax themes.
+
+
+@import "syntax-variables";
+
+.markdown-preview:not([data-use-github-style]) {
+
+  @fg: @syntax-text-color;
+  @bg: @syntax-background-color;
+
+  @fg-accent: @syntax-cursor-color;
+  @fg-strong: contrast(@bg, darken(@fg, 32%), lighten(@fg, 32%));
+  @fg-subtle: contrast(@fg, lighten(@fg, 16%), darken(@fg, 16%));
+
+  @border: contrast(@bg, lighten(@bg, 16%), darken(@bg, 16%));
+
+  @margin: 1.5em;
+
+
+  padding: 2em;
+  font-size: 1.2em;
+  color: @fg;
+  background-color: @bg;
+  overflow: auto;
+
+  & > :first-child {
+    margin-top: 0;
+  }
+
+
+  // Headings --------------------
+
+  h1, h2, h3, h4, h5, h6 {
+    line-height: 1.2;
+    margin-top: @margin;
+    margin-bottom: @margin/3;
+    color: @fg-strong;
+  }
+
+  h1 { font-size: 2.4em; font-weight: 300; }
+  h2 { font-size: 1.8em; font-weight: 400; }
+  h3 { font-size: 1.5em; font-weight: 500; }
+  h4 { font-size: 1.2em; font-weight: 600; }
+  h5 { font-size: 1.1em; font-weight: 600; }
+  h6 { font-size: 1.0em; font-weight: 600; }
+
+
+  // Emphasis --------------------
+
+  strong {
+    color: @fg-strong;
+  }
+
+  del {
+    color: @fg-subtle;
+  }
+
+
+  // Link --------------------
+
+  a,
+  a code {
+    color: @fg-accent;
+  }
+
+
+  // Images --------------------
+
+  img {
+    max-width: 100%;
+  }
+
+
+  // Paragraph --------------------
+
+  & > p {
+    margin-top: 0;
+    margin-bottom: @margin;
+  }
+
+
+  // List --------------------
+
+  & > ul,
+  & > ol {
+    margin-bottom: @margin;
+  }
+
+
+  // Blockquotes --------------------
+
+  blockquote {
+    margin: @margin 0;
+    font-size: inherit;
+    color: @fg-subtle;
+    border-color: @border;
+    border-width: 4px;
+  }
+
+
+  // HR --------------------
+
+  hr {
+    margin: @margin*2 0;
+    border-top: 2px dashed @border;
+    background: none;
+  }
+
+
+  // Table --------------------
+
+  table {
+    margin: @margin 0;
+  }
+
+  th {
+    color: @fg-strong;
+  }
+
+  th,
+  td {
+    padding: .66em 1em;
+    border: 1px solid @border;
+  }
+
+
+  // Code --------------------
+
+  code {
+    color: @fg-strong;
+    background-color: contrast(@syntax-background-color, lighten(@syntax-background-color, 8%), darken(@syntax-background-color, 6%));
+  }
+
+  atom-text-editor {
+    margin: @margin 0;
+    padding: 1em;
+    font-size: .92em;
+    border-radius: 3px;
+    background-color: contrast(@syntax-background-color, lighten(@syntax-background-color, 4%), darken(@syntax-background-color, 4%));
+  }
+
+
+  // KBD --------------------
+
+  kbd {
+    color: @fg-strong;
+    border: 1px solid @border;
+    border-bottom: 2px solid darken(@border, 6%);
+    background-color: contrast(@syntax-background-color, lighten(@syntax-background-color, 8%), darken(@syntax-background-color, 6%));
+  }
+
+}
diff --git a/packages/markdown-preview/styles/markdown-preview-github.less b/packages/markdown-preview/styles/markdown-preview-github.less
new file mode 100644
index 000000000..fedb5cbc3
--- /dev/null
+++ b/packages/markdown-preview/styles/markdown-preview-github.less
@@ -0,0 +1,40 @@
+
+// GitHub.com styles
+
+// These are the GitHub Flavored Markdown styles also found on github.com.
+// They can be anabled in the markdown-preview settings by turning on "Use GitHub.com styles".
+
+
+@import (reference) "../assets/primer-markdown";
+
+.markdown-preview[data-use-github-style] {
+
+  // Includes GitHub.com styles from `../assets/primer-markdown.less`.
+  // Source: https://github.com/primer/primer/tree/master/modules/primer-markdown
+  .markdown-body();
+
+
+  // The styles below override/complement the GitHub.com styles
+  // It's needed because some markup or global styles are different
+  padding: 30px;
+  font-size: 16px;
+  color: #333;
+  background-color: #fff;
+  overflow: scroll;
+
+  a {
+    color: #337ab7;
+  }
+
+  code {
+    color: inherit;
+  }
+
+  atom-text-editor {
+    padding: .8em 1em;
+    margin-bottom: 1em;
+    font-size: .85em;
+    border-radius: 4px;
+    overflow: auto;
+  }
+}
diff --git a/packages/markdown-preview/styles/markdown-preview.less b/packages/markdown-preview/styles/markdown-preview.less
new file mode 100644
index 000000000..bff8cec53
--- /dev/null
+++ b/packages/markdown-preview/styles/markdown-preview.less
@@ -0,0 +1,41 @@
+
+// Global Markdown Preview styles
+
+.markdown-preview {
+  atom-text-editor {
+    // only show scrollbars on hover
+    .scrollbars-visible-always & {
+      .vertical-scrollbar,
+      .horizontal-scrollbar {
+        visibility: hidden;
+      }
+    }
+    .scrollbars-visible-always &:hover {
+      .vertical-scrollbar,
+      .horizontal-scrollbar {
+        visibility: visible;
+      }
+    }
+    user-select: auto;
+  }
+
+  // move task list checkboxes
+  .task-list-item input[type=checkbox] {
+    position: absolute;
+    margin: .25em 0 0 -1.4em;
+  }
+
+  .task-list-item {
+    list-style-type: none;
+  }
+}
+
+.markdown-spinner {
+  margin: auto;
+  background-image: url(images/octocat-spinner-128.gif);
+  background-repeat: no-repeat;
+  background-size: 64px;
+  background-position: top center;
+  padding-top: 70px;
+  text-align: center;
+}
diff --git a/packages/one-dark-syntax/LICENSE.md b/packages/one-dark-syntax/LICENSE.md
deleted file mode 100644
index 4e47b02a2..000000000
--- a/packages/one-dark-syntax/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2016 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/one-dark-syntax/README.md b/packages/one-dark-syntax/README.md
index fbd49e7f8..807dd662b 100644
--- a/packages/one-dark-syntax/README.md
+++ b/packages/one-dark-syntax/README.md
@@ -8,4 +8,4 @@ There is also a matching [UI theme](https://atom.io/themes/one-dark-ui).
 
 ### Install
 
-This theme is installed by default with Atom and can be activated by going to the __Settings > Themes__ section and selecting it from the __Syntax Themes__ drop-down menu.
+This theme is installed by default with Pulsar and can be activated by going to the __Settings > Themes__ section and selecting it from the __Syntax Themes__ drop-down menu.
diff --git a/packages/one-dark-syntax/package-lock.json b/packages/one-dark-syntax/package-lock.json
new file mode 100644
index 000000000..681813a22
--- /dev/null
+++ b/packages/one-dark-syntax/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "one-dark-syntax",
+  "version": "1.8.4",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "one-dark-syntax",
+      "version": "1.8.4",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.50.0"
+      }
+    }
+  }
+}
diff --git a/packages/one-dark-ui/LICENSE.md b/packages/one-dark-ui/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/one-dark-ui/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/one-dark-ui/README.md b/packages/one-dark-ui/README.md
index f2e1dfcc2..b44f5dbff 100644
--- a/packages/one-dark-ui/README.md
+++ b/packages/one-dark-ui/README.md
@@ -9,7 +9,7 @@ A dark UI theme that adapts to most syntax themes.
 
 ### Install
 
-This theme comes bundled with Atom and can be activated by going to the __Settings > Themes__ section and selecting "One Dark" from the __UI Themes__ drop-down menu.
+This theme comes bundled with Pulsar and can be activated by going to the __Settings > Themes__ section and selecting "One Dark" from the __UI Themes__ drop-down menu.
 
 
 ### Settings
diff --git a/packages/one-dark-ui/package-lock.json b/packages/one-dark-ui/package-lock.json
new file mode 100644
index 000000000..451f9776d
--- /dev/null
+++ b/packages/one-dark-ui/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "one-dark-ui",
+  "version": "1.12.5",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "one-dark-ui",
+      "version": "1.12.5",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.40.0"
+      }
+    }
+  }
+}
diff --git a/packages/one-light-syntax/LICENSE.md b/packages/one-light-syntax/LICENSE.md
deleted file mode 100644
index 4e47b02a2..000000000
--- a/packages/one-light-syntax/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2016 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/one-light-syntax/README.md b/packages/one-light-syntax/README.md
index f55f69f4f..b35607bc1 100644
--- a/packages/one-light-syntax/README.md
+++ b/packages/one-light-syntax/README.md
@@ -8,4 +8,4 @@ There is also a matching [UI theme](../one-light-ui).
 
 ### Install
 
-This theme is installed by default with Atom and can be activated by going to the __Settings > Themes__ section and selecting it from the __Syntax Themes__ drop-down menu.
+This theme is installed by default with Pulsar and can be activated by going to the __Settings > Themes__ section and selecting it from the __Syntax Themes__ drop-down menu.
diff --git a/packages/one-light-syntax/package-lock.json b/packages/one-light-syntax/package-lock.json
new file mode 100644
index 000000000..bb42fa61b
--- /dev/null
+++ b/packages/one-light-syntax/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "one-light-syntax",
+  "version": "1.8.4",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "one-light-syntax",
+      "version": "1.8.4",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.40.0"
+      }
+    }
+  }
+}
diff --git a/packages/one-light-ui/LICENSE.md b/packages/one-light-ui/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/one-light-ui/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/one-light-ui/README.md b/packages/one-light-ui/README.md
index 0c8bb0229..79b31de03 100644
--- a/packages/one-light-ui/README.md
+++ b/packages/one-light-ui/README.md
@@ -9,7 +9,7 @@ A light UI theme that adapts to most syntax themes.
 
 ### Install
 
-This theme comes bundled with Atom and can be activated by going to the __Settings > Themes__ section and selecting "One Light" from the __UI Themes__ drop-down menu.
+This theme comes bundled with Pulsar and can be activated by going to the __Settings > Themes__ section and selecting "One Light" from the __UI Themes__ drop-down menu.
 
 
 ### Settings
diff --git a/packages/one-light-ui/package-lock.json b/packages/one-light-ui/package-lock.json
new file mode 100644
index 000000000..e14d68fee
--- /dev/null
+++ b/packages/one-light-ui/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "one-light-ui",
+  "version": "1.12.5",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "one-light-ui",
+      "version": "1.12.5",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.40.0"
+      }
+    }
+  }
+}
diff --git a/packages/open-on-github/README.md b/packages/open-on-github/README.md
new file mode 100644
index 000000000..588ea99ac
--- /dev/null
+++ b/packages/open-on-github/README.md
@@ -0,0 +1,32 @@
+# Open on GitHub package
+
+Provides commands to quickly view the current file on GitHub.com (The Website).
+
+## Usage
+
+When editing a file in Pulsar, use the command palette or keyboard shortcuts to:
+
+- Open the file on github.com <kbd>alt-g, o</kbd>
+- Open the blame view for the file on github.com <kbd>alt-g, b</kbd>
+- Open the history view for the file on github.com <kbd>alt-g, h</kbd>
+- Open the issues view for the repository the file belongs to on github.com <kbd>alt-g, i</kbd>
+- Open the pull requests view for the repository the file belongs to on github.com <kbd>alt-g, p</kbd>
+- Open the compare page for the current branch on github.com <kbd>alt-g, r</kbd>
+- Copy the github.com URL for the currently selected lines <kbd>alt-g, c</kbd>
+
+![Command Palette](https://f.cloud.github.com/assets/671378/2241755/23cb72f8-9ce2-11e3-9109-36c76a030f6a.png)
+
+## Remote URL detection
+
+The GitHub repository URL is guessed from the current branch and Git remote information. To override the defaults, you can use `git config` to set the remote and branch name:
+
+```
+git config atom.open-on-github.remote upstream
+git config atom.open-on-github.branch some-branch
+```
+
+---
+
+Inspired by the [GitHub Tools package][github-tools] for Sublime Text 2.
+
+[github-tools]: https://github.com/temochka/sublime-text-2-github-tools
diff --git a/packages/open-on-github/keymaps/to-the-hubs.cson b/packages/open-on-github/keymaps/to-the-hubs.cson
new file mode 100644
index 000000000..6a3fc7bfc
--- /dev/null
+++ b/packages/open-on-github/keymaps/to-the-hubs.cson
@@ -0,0 +1,9 @@
+'atom-workspace':
+  'alt-g o': 'open-on-github:file'
+  'alt-g b': 'open-on-github:blame'
+  'alt-g h': 'open-on-github:history'
+  'alt-g i': 'open-on-github:issues'
+  'alt-g p': 'open-on-github:pull-requests'
+  'alt-g c': 'open-on-github:copy-url'
+  'alt-g r': 'open-on-github:branch-compare'
+  'alt-g g': 'open-on-github:repository'
diff --git a/packages/open-on-github/lib/get-active-path.js b/packages/open-on-github/lib/get-active-path.js
new file mode 100644
index 000000000..e75ed7e51
--- /dev/null
+++ b/packages/open-on-github/lib/get-active-path.js
@@ -0,0 +1,45 @@
+function getActivePath (target) {
+  if (!target) {
+    return atom.project.getPaths()[0]
+  }
+
+  const treeView = target.closest('.tree-view')
+  if (treeView) {
+    // called from treeview
+    const selected = treeView.querySelector('.selected > .list-item > .name, .selected > .name')
+    if (selected) {
+      return selected.dataset.path
+    }
+    return
+  }
+
+  const tab = target.closest('.tab-bar > .tab')
+  if (tab) {
+    // called from tab
+    const title = tab.querySelector('.title')
+    if (title && title.dataset.path) {
+      return title.dataset.path
+    }
+    return
+  }
+
+  const paneItem = atom.workspace.getActivePaneItem()
+  if (paneItem && typeof paneItem.getPath === 'function') {
+    // called from active pane
+    return paneItem.getPath()
+  }
+
+  const textEditor = atom.workspace.getActiveTextEditor()
+  if (textEditor && typeof textEditor.getPath === 'function') {
+    // fallback to activeTextEditor if activePaneItem is not a file
+    return textEditor.getPath()
+  }
+
+  const projects = atom.project.getPaths()
+  if (projects.length === 1) {
+    // use project is nothing is open
+    return projects[0]
+  }
+}
+
+module.exports = getActivePath
diff --git a/packages/open-on-github/lib/github-file.js b/packages/open-on-github/lib/github-file.js
new file mode 100644
index 000000000..e7e82ba7a
--- /dev/null
+++ b/packages/open-on-github/lib/github-file.js
@@ -0,0 +1,363 @@
+/** @babel */
+
+import {shell} from 'electron'
+import {Range} from 'atom'
+import {parse as parseURL} from 'url'
+import path from 'path'
+
+export default class GitHubFile {
+  // Public
+  static fromPath (filePath) {
+    return new GitHubFile(filePath)
+  }
+
+  constructor (filePath) {
+    this.filePath = filePath
+    const [rootDir] = atom.project.relativizePath(this.filePath)
+
+    if (rootDir != null) {
+      const rootDirIndex = atom.project.getPaths().indexOf(rootDir)
+      this.repo = atom.project.getRepositories()[rootDirIndex]
+      this.type = 'none'
+      if (this.repo && this.gitURL()) {
+        if (this.isGitHubWikiURL(this.githubRepoURL())) {
+          this.type = 'wiki'
+        } else if (this.isGistURL(this.githubRepoURL())) {
+          this.type = 'gist'
+        } else {
+          this.type = 'repo'
+        }
+      }
+    }
+  }
+
+  // Public
+  open (lineRange) {
+    if (this.validateRepo()) {
+      this.openURLInBrowser(this.blobURL() + this.getLineRangeSuffix(lineRange))
+    }
+  }
+
+  // Public
+  openOnMaster (lineRange) {
+    if (this.validateRepo()) {
+      this.openURLInBrowser(this.blobURLForMaster() + this.getLineRangeSuffix(lineRange))
+    }
+  }
+
+  // Public
+  blame (lineRange) {
+    if (this.validateRepo()) {
+      if (this.type === 'repo') {
+        this.openURLInBrowser(this.blameURL() + this.getLineRangeSuffix(lineRange))
+      } else {
+        atom.notifications.addWarning(`Blames do not exist for ${this.type}s`)
+      }
+    }
+  }
+
+  history () {
+    if (this.validateRepo()) {
+      this.openURLInBrowser(this.historyURL())
+    }
+  }
+
+  copyURL (lineRange) {
+    if (this.validateRepo()) {
+      atom.clipboard.write(this.shaURL() + this.getLineRangeSuffix(lineRange))
+    }
+  }
+
+  openBranchCompare () {
+    if (this.validateRepo()) {
+      if (this.type === 'repo') {
+        this.openURLInBrowser(this.branchCompareURL())
+      } else {
+        atom.notifications.addWarning(`Branches do not exist for ${this.type}s`)
+      }
+    }
+  }
+
+  openIssues () {
+    if (this.validateRepo()) {
+      if (this.type === 'repo') {
+        this.openURLInBrowser(this.issuesURL())
+      } else {
+        atom.notifications.addWarning(`Issues do not exist for ${this.type}s`)
+      }
+    }
+  }
+
+  openPullRequests () {
+    if (this.validateRepo()) {
+      if (this.type === 'repo') {
+        this.openURLInBrowser(this.pullRequestsURL())
+      } else {
+        atom.notifications.addWarning(`Pull requests do not exist for ${this.type}s`)
+      }
+    }
+  }
+
+  openRepository () {
+    if (this.validateRepo()) {
+      this.openURLInBrowser(this.githubRepoURL())
+    }
+  }
+
+  getLineRangeSuffix (lineRange) {
+    if (lineRange && this.type !== 'wiki' && atom.config.get('open-on-github.includeLineNumbersInUrls')) {
+      lineRange = Range.fromObject(lineRange)
+      const startRow = lineRange.start.row + 1
+      const endRow = lineRange.end.row + 1
+
+      if (startRow === endRow) {
+        if (this.type === 'gist') {
+          return `-L${startRow}`
+        } else {
+          return `#L${startRow}`
+        }
+      } else {
+        if (this.type === 'gist') {
+          return `-L${startRow}-L${endRow}`
+        } else {
+          return `#L${startRow}-L${endRow}`
+        }
+      }
+    } else {
+      return ''
+    }
+  }
+
+  // Internal
+  validateRepo () {
+    if (!this.repo) {
+      atom.notifications.addWarning(`No repository found for path: ${this.filePath}.`)
+      return false
+    } else if (!this.gitURL()) {
+      atom.notifications.addWarning(`No URL defined for remote: ${this.remoteName()}`)
+      return false
+    } else if (!this.githubRepoURL()) {
+      atom.notifications.addWarning(`Remote URL is not hosted on GitHub: ${this.gitURL()}`)
+      return false
+    }
+    return true
+  }
+
+  // Internal
+  openURLInBrowser (url) {
+    shell.openExternal(url)
+  }
+
+  // Internal
+  blobURL () {
+    const gitHubRepoURL = this.githubRepoURL()
+    const repoRelativePath = this.repoRelativePath()
+
+    if (this.type === 'wiki') {
+      return `${gitHubRepoURL}/${this.extractFileName(repoRelativePath)}`
+    } else if (this.type === 'gist') {
+      return `${gitHubRepoURL}#file-${this.encodeSegments(repoRelativePath.replace(/\./g, '-'))}`
+    } else {
+      return `${gitHubRepoURL}/blob/${this.remoteBranchName()}/${this.encodeSegments(repoRelativePath)}`
+    }
+  }
+
+  // Internal
+  blobURLForMaster () {
+    const gitHubRepoURL = this.githubRepoURL()
+
+    if (this.type === 'repo') {
+      return `${gitHubRepoURL}/blob/master/${this.encodeSegments(this.repoRelativePath())}`
+    } else {
+      return this.blobURL() // Only repos have branches
+    }
+  }
+
+  // Internal
+  shaURL () {
+    const gitHubRepoURL = this.githubRepoURL()
+    const encodedSHA = this.encodeSegments(this.sha())
+    const repoRelativePath = this.repoRelativePath()
+
+    if (this.type === 'wiki') {
+      return `${gitHubRepoURL}/${this.extractFileName(repoRelativePath)}/${encodedSHA}`
+    } else if (this.type === 'gist') {
+      return `${gitHubRepoURL}/${encodedSHA}#file-${this.encodeSegments(repoRelativePath.replace(/\./g, '-'))}`
+    } else {
+      return `${gitHubRepoURL}/blob/${encodedSHA}/${this.encodeSegments(repoRelativePath)}`
+    }
+  }
+
+  // Internal
+  blameURL () {
+    return `${this.githubRepoURL()}/blame/${this.remoteBranchName()}/${this.encodeSegments(this.repoRelativePath())}`
+  }
+
+  // Internal
+  historyURL () {
+    const gitHubRepoURL = this.githubRepoURL()
+
+    if (this.type === 'wiki') {
+      return `${gitHubRepoURL}/${this.extractFileName(this.repoRelativePath())}/_history`
+    } else if (this.type === 'gist') {
+      return `${gitHubRepoURL}/revisions`
+    } else {
+      return `${gitHubRepoURL}/commits/${this.remoteBranchName()}/${this.encodeSegments(this.repoRelativePath())}`
+    }
+  }
+
+  // Internal
+  issuesURL () {
+    return `${this.githubRepoURL()}/issues`
+  }
+
+  // Internal
+  pullRequestsURL () {
+    return `${this.githubRepoURL()}/pulls`
+  }
+
+  // Internal
+  branchCompareURL () {
+    return `${this.githubRepoURL()}/compare/${this.encodeSegments(this.branchName())}`
+  }
+
+  encodeSegments (segments = '') {
+    return segments.split('/').map(segment => encodeURIComponent(segment)).join('/')
+  }
+
+  // Internal
+  extractFileName (relativePath = '') {
+    return path.parse(relativePath).name
+  }
+
+  // Internal
+  gitURL () {
+    const remoteName = this.remoteName()
+    if (remoteName != null) {
+      return this.repo.getConfigValue(`remote.${remoteName}.url`, this.filePath)
+    } else {
+      return this.repo.getConfigValue(`remote.origin.url`, this.filePath)
+    }
+  }
+
+  // Internal
+  githubRepoURL () {
+    let url = this.gitURL()
+
+    if (url.match(/git@[^:]+:/)) { // git@github.com:user/repo.git
+      url = url.replace(/^git@([^:]+):(.+)$/, (match, host, repoPath) => {
+        repoPath = repoPath.replace(/^\/+/, '')
+        return `https://${host}/${repoPath}` // -> https://github.com/user/repo.git
+      })
+    } else if (url.match(/^ssh:\/\/git@([^/]+)\//)) { // ssh://git@github.com/user/repo.git
+      url = `https://${url.substring(10)}` // -> https://github.com/user/repo.git
+    } else if (url.match(/^git:\/\/[^/]+\//)) { // git://github.com/user/repo.git
+      url = `https${url.substring(3)}` // -> https://github.com/user/repo.git
+    } else if (url.match(/^https?:\/\/\w+@/)) { // https://user@github.com/user/repo.git
+      url = url.replace(/^https?:\/\/\w+@/, 'https://') // -> https://github.com/user/repo.git
+    }
+
+    // Remove trailing .git and trailing slashes
+    url = url.replace(/\.git$/, '').replace(/\/+$/, '')
+    // Change .wiki to /wiki
+    url = url.replace(/\.wiki$/, '/wiki')
+
+    if (!this.isBitbucketURL(url)) {
+      return url
+    }
+  }
+
+  isGistURL (url) {
+    try {
+      const {host} = parseURL(url)
+
+      return host === 'gist.github.com'
+    } catch (error) {
+      return false
+    }
+  }
+
+  isGitHubWikiURL (url) {
+    return /\/wiki$/.test(url)
+  }
+
+  isBitbucketURL (url) {
+    if (url.startsWith('git@bitbucket.org')) {
+      return true
+    }
+
+    try {
+      const {host} = parseURL(url)
+
+      return host === 'bitbucket.org'
+    } catch (error) {
+      return false
+    }
+  }
+
+  // Internal
+  repoRelativePath () {
+    return this.repo.getRepo(this.filePath).relativize(this.filePath)
+  }
+
+  // Internal
+  remoteName () {
+    const gitConfigRemote = this.repo.getConfigValue('atom.open-on-github.remote', this.filePath)
+
+    if (gitConfigRemote) {
+      return gitConfigRemote
+    }
+
+    const shortBranch = this.repo.getShortHead(this.filePath)
+
+    if (!shortBranch) {
+      return null
+    }
+
+    const branchRemote = this.repo.getConfigValue(`branch.${shortBranch}.remote`, this.filePath)
+
+    if (branchRemote && branchRemote.length > 0) {
+      return branchRemote
+    }
+
+    return null
+  }
+
+  // Internal
+  sha () {
+    return this.repo.getReferenceTarget('HEAD', this.filePath)
+  }
+
+  // Internal
+  branchName () {
+    const shortBranch = this.repo.getShortHead(this.filePath)
+
+    if (!shortBranch) {
+      return null
+    }
+
+    const branchMerge = this.repo.getConfigValue(`branch.${shortBranch}.merge`, this.filePath)
+    if (!(branchMerge && branchMerge.length > 11)) {
+      return shortBranch
+    }
+
+    if (branchMerge.indexOf('refs/heads/') !== 0) {
+      return shortBranch
+    }
+
+    return branchMerge.substring(11)
+  }
+
+  // Internal
+  remoteBranchName () {
+    const gitConfigBranch = this.repo.getConfigValue('atom.open-on-github.branch', this.filePath)
+
+    if (gitConfigBranch) {
+      return gitConfigBranch
+    } else if (this.remoteName() != null) {
+      return this.encodeSegments(this.branchName())
+    } else {
+      return 'master'
+    }
+  }
+}
diff --git a/packages/open-on-github/lib/main.js b/packages/open-on-github/lib/main.js
new file mode 100644
index 000000000..84ac790ec
--- /dev/null
+++ b/packages/open-on-github/lib/main.js
@@ -0,0 +1,68 @@
+const {Disposable} = require('atom')
+const GitHubFile = require('./github-file')
+const getActivePath = require('./get-active-path')
+
+function pathCommand (func) {
+  return function (e) {
+    const itemPath = getActivePath(e.target)
+
+    if (itemPath) {
+      func(itemPath)
+    }
+  }
+}
+
+function getSelectedRange () {
+  const activePaneItem = atom.workspace.getActivePaneItem()
+
+  if (activePaneItem && typeof activePaneItem.getSelectedBufferRange === 'function') {
+    return activePaneItem.getSelectedBufferRange()
+  }
+}
+
+module.exports = {
+  activate () {
+    this.commandsSubscription = new Disposable()
+    this.commandsSubscription = atom.commands.add('atom-pane', {
+      'open-on-github:file': pathCommand((itemPath) => {
+        GitHubFile.fromPath(itemPath).open(getSelectedRange())
+      }),
+
+      'open-on-github:file-on-master': pathCommand((itemPath) => {
+        GitHubFile.fromPath(itemPath).openOnMaster(getSelectedRange())
+      }),
+
+      'open-on-github:blame': pathCommand((itemPath) => {
+        GitHubFile.fromPath(itemPath).blame(getSelectedRange())
+      }),
+
+      'open-on-github:history': pathCommand((itemPath) => {
+        GitHubFile.fromPath(itemPath).history()
+      }),
+
+      'open-on-github:issues': pathCommand((itemPath) => {
+        GitHubFile.fromPath(itemPath).openIssues()
+      }),
+
+      'open-on-github:pull-requests': pathCommand((itemPath) => {
+        GitHubFile.fromPath(itemPath).openPullRequests()
+      }),
+
+      'open-on-github:copy-url': pathCommand((itemPath) => {
+        GitHubFile.fromPath(itemPath).copyURL(getSelectedRange())
+      }),
+
+      'open-on-github:branch-compare': pathCommand((itemPath) => {
+        GitHubFile.fromPath(itemPath).openBranchCompare()
+      }),
+
+      'open-on-github:repository': pathCommand((itemPath) => {
+        GitHubFile.fromPath(itemPath).openRepository()
+      })
+    })
+  },
+
+  deactivate () {
+    this.commandsSubscription.dispose()
+  }
+}
diff --git a/packages/open-on-github/menus/open-on-github.cson b/packages/open-on-github/menus/open-on-github.cson
new file mode 100644
index 000000000..fba36bdc4
--- /dev/null
+++ b/packages/open-on-github/menus/open-on-github.cson
@@ -0,0 +1,19 @@
+'menu': [
+  {
+    'label': 'Packages'
+    'submenu': [
+      'label': 'Open On GitHub'
+      'submenu': [
+        { 'label': 'Blame', 'command': 'open-on-github:blame' }
+        { 'label': 'Branch Compare', 'command': 'open-on-github:branch-compare' }
+        { 'label': 'Copy URL', 'command': 'open-on-github:copy-url' }
+        { 'label': 'File', 'command': 'open-on-github:file' }
+        { 'label': 'File on Master', 'command': 'open-on-github:file-on-master' }
+        { 'label': 'History', 'command': 'open-on-github:history' }
+        { 'label': 'Issues', 'command': 'open-on-github:issues' }
+        { 'label': 'Pull Requests', 'command': 'open-on-github:pull-requests' }
+        { 'label': 'Repository', 'command': 'open-on-github:repository' }
+      ]
+    ]
+  }
+]
diff --git a/packages/open-on-github/package-lock.json b/packages/open-on-github/package-lock.json
new file mode 100644
index 000000000..d7229691b
--- /dev/null
+++ b/packages/open-on-github/package-lock.json
@@ -0,0 +1,212 @@
+{
+  "name": "open-on-github",
+  "version": "1.3.2",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "open-on-github",
+      "version": "1.3.2",
+      "license": "MIT",
+      "devDependencies": {
+        "fs-plus": "^3.0.1",
+        "temp": "^0.8.3"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/async": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+      "dev": true
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "dev": true
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dev": true,
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
+      "dev": true
+    },
+    "node_modules/fs-plus": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/fs-plus/-/fs-plus-3.1.1.tgz",
+      "integrity": "sha512-Se2PJdOWXqos1qVTkvqqjb0CSnfBnwwD+pq+z4ksT+e97mEShod/hrNg0TRCCsXPbJzcIq+NuzQhigunMWMJUA==",
+      "dev": true,
+      "dependencies": {
+        "async": "^1.5.2",
+        "mkdirp": "^0.5.1",
+        "rimraf": "^2.5.2",
+        "underscore-plus": "1.x"
+      }
+    },
+    "node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+      "dev": true
+    },
+    "node_modules/glob": {
+      "version": "7.1.5",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.5.tgz",
+      "integrity": "sha512-J9dlskqUXK1OeTOYBEn5s8aMukWMwWfs+rPTn/jn50Ux4MNXVhubL1wu/j2t+H4NVI+cXEcCaYellqaPVGXNqQ==",
+      "dev": true,
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "dev": true,
+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "node_modules/inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+      "dev": true
+    },
+    "node_modules/minimatch": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "dev": true,
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/minimist": {
+      "version": "0.0.8",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+      "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
+      "dev": true
+    },
+    "node_modules/mkdirp": {
+      "version": "0.5.1",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+      "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
+      "deprecated": "Legacy versions of mkdirp are no longer supported. Please update to mkdirp 1.x. (Note that the API surface has changed to use Promises in 1.x.)",
+      "dev": true,
+      "dependencies": {
+        "minimist": "0.0.8"
+      },
+      "bin": {
+        "mkdirp": "bin/cmd.js"
+      }
+    },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "dev": true,
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/os-tmpdir": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
+      "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/rimraf": {
+      "version": "2.7.1",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+      "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
+      "dev": true,
+      "dependencies": {
+        "glob": "^7.1.3"
+      },
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/temp": {
+      "version": "0.8.3",
+      "resolved": "https://registry.npmjs.org/temp/-/temp-0.8.3.tgz",
+      "integrity": "sha1-4Ma8TSa5AxJEEOT+2BEDAU38H1k=",
+      "dev": true,
+      "engines": [
+        "node >=0.8.0"
+      ],
+      "dependencies": {
+        "os-tmpdir": "^1.0.0",
+        "rimraf": "~2.2.6"
+      }
+    },
+    "node_modules/temp/node_modules/rimraf": {
+      "version": "2.2.8",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
+      "integrity": "sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI=",
+      "dev": true,
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.9.1.tgz",
+      "integrity": "sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg==",
+      "dev": true
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dev": true,
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    }
+  }
+}
diff --git a/packages/open-on-github/package.json b/packages/open-on-github/package.json
new file mode 100644
index 000000000..a4a4bfcb1
--- /dev/null
+++ b/packages/open-on-github/package.json
@@ -0,0 +1,35 @@
+{
+  "name": "open-on-github",
+  "version": "1.3.2",
+  "main": "./lib/main",
+  "description": "View the active file on github.com",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "activationCommands": {
+    "atom-pane": [
+      "open-on-github:blame",
+      "open-on-github:branch-compare",
+      "open-on-github:copy-url",
+      "open-on-github:file",
+      "open-on-github:file-on-master",
+      "open-on-github:history",
+      "open-on-github:issues",
+      "open-on-github:pull-requests",
+      "open-on-github:repository"
+    ]
+  },
+  "engines": {
+    "atom": "*"
+  },
+  "devDependencies": {
+    "fs-plus": "^3.0.1",
+    "temp": "^0.8.3"
+  },
+  "configSchema": {
+    "includeLineNumbersInUrls": {
+      "default": true,
+      "type": "boolean",
+      "description": "Include the line range selected in the editor when opening or copying URLs to the clipboard. When opened in the browser, the GitHub page will automatically scroll to the selected line range."
+    }
+  }
+}
diff --git a/packages/open-on-github/spec/async-spec-helpers.js b/packages/open-on-github/spec/async-spec-helpers.js
new file mode 100644
index 000000000..56550cd9f
--- /dev/null
+++ b/packages/open-on-github/spec/async-spec-helpers.js
@@ -0,0 +1,103 @@
+/** @babel */
+
+export function beforeEach (fn) {
+  global.beforeEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+export function afterEach (fn) {
+  global.afterEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+['it', 'fit', 'ffit', 'fffit'].forEach(function (name) {
+  module.exports[name] = function (description, fn) {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, function () {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise(() => result)
+      }
+    })
+  }
+})
+
+export async function conditionPromise (condition) {
+  const startTime = Date.now()
+
+  while (true) {
+    await timeoutPromise(100)
+
+    if (await condition()) {
+      return
+    }
+
+    if (Date.now() - startTime > 5000) {
+      throw new Error('Timed out waiting on condition')
+    }
+  }
+}
+
+export function timeoutPromise (timeout) {
+  return new Promise(function (resolve) {
+    global.setTimeout(resolve, timeout)
+  })
+}
+
+function waitsForPromise (fn) {
+  const promise = fn()
+  global.waitsFor('spec promise to resolve', function (done) {
+    promise.then(done, function (error) {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
+
+export function emitterEventPromise (emitter, event, timeout = 15000) {
+  return new Promise((resolve, reject) => {
+    const timeoutHandle = setTimeout(() => {
+      reject(new Error(`Timed out waiting for '${event}' event`))
+    }, timeout)
+    emitter.once(event, () => {
+      clearTimeout(timeoutHandle)
+      resolve()
+    })
+  })
+}
+
+export function promisify (original) {
+  return function (...args) {
+    return new Promise((resolve, reject) => {
+      args.push((err, ...results) => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve(...results)
+        }
+      })
+
+      return original(...args)
+    })
+  }
+}
+
+export function promisifySome (obj, fnNames) {
+  const result = {}
+  for (const fnName of fnNames) {
+    result[fnName] = promisify(obj[fnName])
+  }
+  return result
+}
diff --git a/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/HEAD b/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/HEAD
new file mode 100644
index 000000000..31bd28160
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/a#b#c
diff --git a/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/config b/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/config
new file mode 100644
index 000000000..fe3a360d8
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/config
@@ -0,0 +1,13 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
+	precomposeunicode = false
+[remote "origin"]
+	url = https://github.com/some-user/some-repo.git
+	fetch = +refs/heads/*:refs/remotes/origin/*
+[branch "a#b#c"]
+	remote = origin
+	merge = "refs/heads/a#b#c"
diff --git a/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/index b/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/index
new file mode 100644
index 000000000..63219eb4b
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diff --git a/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/objects/49/b66d1718514fba902b6392b97041ebce0760f1 b/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/objects/49/b66d1718514fba902b6392b97041ebce0760f1
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diff --git a/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 b/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391
new file mode 100644
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diff --git a/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/refs/heads/a#b#c b/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/refs/heads/a#b#c
new file mode 100644
index 000000000..3b49fa451
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/branch-with-hash-in-name.git/refs/heads/a#b#c
@@ -0,0 +1 @@
+49b66d1718514fba902b6392b97041ebce0760f1
diff --git a/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/HEAD b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/HEAD
new file mode 100644
index 000000000..35db74303
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/foo/bar
diff --git a/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/config b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/config
new file mode 100644
index 000000000..701ab8544
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/config
@@ -0,0 +1,13 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
+	precomposeunicode = false
+[remote "origin"]
+	url = https://github.com/some-user/some-repo.git
+	fetch = +refs/heads/*:refs/remotes/origin/*
+[branch "foo/bar"]
+	remote = origin
+	merge = refs/heads/foo/bar
diff --git a/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/index b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/index
new file mode 100644
index 000000000..b198ef5c5
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diff --git a/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/objects/5c/dc5a2508dfc832223df221a8e55fb6ccf95932 b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/objects/5c/dc5a2508dfc832223df221a8e55fb6ccf95932
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diff --git a/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd
new file mode 100644
index 000000000..1d0efa72b
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd
@@ -0,0 +1 @@
+x
��A�0@Q�=�\@S��	1nu�
ʴ�5@
��ܾ��\��4�d���G�6$�MH����(
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diff --git a/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24 b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24
new file mode 100644
index 000000000..53983f269
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diff --git a/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/refs/heads/foo/bar b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/refs/heads/foo/bar
new file mode 100644
index 000000000..535819092
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/branch-with-slash-in-name.git/refs/heads/foo/bar
@@ -0,0 +1 @@
+80b7897ceb6bd7531708509b50afeab36a4b73fd
diff --git a/packages/open-on-github/spec/fixtures/git-config.git/HEAD b/packages/open-on-github/spec/fixtures/git-config.git/HEAD
new file mode 100644
index 000000000..cb089cd89
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/git-config.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/master
diff --git a/packages/open-on-github/spec/fixtures/git-config.git/config b/packages/open-on-github/spec/fixtures/git-config.git/config
new file mode 100644
index 000000000..7f65e08fc
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/git-config.git/config
@@ -0,0 +1,19 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
+	precomposeunicode = false
+[remote "origin"]
+	url = https://github.com/some-user/some-repo.git
+	fetch = +refs/heads/*:refs/remotes/origin/*
+[branch "master"]
+	remote = origin
+	merge = refs/heads/master
+[remote "some-remote"]
+	url = https://github.com/foo/bar.git
+	fetch = +refs/heads/*:refs/remotes/origin/*
+[atom "open-on-github"]
+	remote = some-remote
+	branch = some-branch
diff --git a/packages/open-on-github/spec/fixtures/git-config.git/index b/packages/open-on-github/spec/fixtures/git-config.git/index
new file mode 100644
index 000000000..b198ef5c5
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diff --git a/packages/open-on-github/spec/fixtures/git-config.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd b/packages/open-on-github/spec/fixtures/git-config.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd
new file mode 100644
index 000000000..1d0efa72b
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/git-config.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd
@@ -0,0 +1 @@
+x
��A�0@Q�=�\@S��	1nu�
ʴ�5@
��ܾ��\��4�d���G�6$�MH����(
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+[branch "master"]
+	remote = origin
+	merge = refs/heads/master
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+	fetch = +refs/heads/*:refs/remotes/origin/*
+[branch "master"]
+	remote = origin
+	merge = refs/heads/master
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+[branch "master"]
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+	merge = refs/heads/master
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diff --git a/packages/open-on-github/spec/fixtures/no-remote.git/objects/98/4f6dfa5e1ac016cb4e4d11f39343efb3c27d7f b/packages/open-on-github/spec/fixtures/no-remote.git/objects/98/4f6dfa5e1ac016cb4e4d11f39343efb3c27d7f
new file mode 100644
index 000000000..f9c9b28b8
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diff --git a/packages/open-on-github/spec/fixtures/no-remote.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24 b/packages/open-on-github/spec/fixtures/no-remote.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24
new file mode 100644
index 000000000..53983f269
Binary files /dev/null and b/packages/open-on-github/spec/fixtures/no-remote.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24 differ
diff --git a/packages/open-on-github/spec/fixtures/no-remote.git/refs/heads/master b/packages/open-on-github/spec/fixtures/no-remote.git/refs/heads/master
new file mode 100644
index 000000000..535819092
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/no-remote.git/refs/heads/master
@@ -0,0 +1 @@
+80b7897ceb6bd7531708509b50afeab36a4b73fd
diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/HEAD b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/HEAD
new file mode 100644
index 000000000..00850be81
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/non-tracked-branch
diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/config b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/config
new file mode 100644
index 000000000..0952eca39
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/config
@@ -0,0 +1,13 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
+	precomposeunicode = false
+[remote "origin"]
+	url = https://github.com/some-user/some-repo.git
+	fetch = +refs/heads/*:refs/remotes/origin/*
+[branch "master"]
+	remote = origin
+	merge = refs/heads/master
diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/index b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/index
new file mode 100644
index 000000000..b198ef5c5
Binary files /dev/null and b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/index differ
diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/5c/dc5a2508dfc832223df221a8e55fb6ccf95932 b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/5c/dc5a2508dfc832223df221a8e55fb6ccf95932
new file mode 100644
index 000000000..1a76bd523
Binary files /dev/null and b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/5c/dc5a2508dfc832223df221a8e55fb6ccf95932 differ
diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd
new file mode 100644
index 000000000..1d0efa72b
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd
@@ -0,0 +1 @@
+x
��A�0@Q�=�\@S��	1nu�
ʴ�5@
��ܾ��\��4�d���G�6$�MH����(
-sr�*�J������XC��g����O�O\�4��\g\Kp�g�զ�X�	u��?��R_�@�
\ No newline at end of file
diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/98/4f6dfa5e1ac016cb4e4d11f39343efb3c27d7f b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/98/4f6dfa5e1ac016cb4e4d11f39343efb3c27d7f
new file mode 100644
index 000000000..f9c9b28b8
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diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24 b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24
new file mode 100644
index 000000000..53983f269
Binary files /dev/null and b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24 differ
diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/refs/heads/master b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/refs/heads/master
new file mode 100644
index 000000000..535819092
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/refs/heads/master
@@ -0,0 +1 @@
+80b7897ceb6bd7531708509b50afeab36a4b73fd
diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/refs/heads/non-tracked-branch b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/refs/heads/non-tracked-branch
new file mode 100644
index 000000000..535819092
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/refs/heads/non-tracked-branch
@@ -0,0 +1 @@
+80b7897ceb6bd7531708509b50afeab36a4b73fd
diff --git a/packages/open-on-github/spec/fixtures/non-tracked-branch.git/refs/remotes/origin/master b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/refs/remotes/origin/master
new file mode 100644
index 000000000..535819092
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/non-tracked-branch.git/refs/remotes/origin/master
@@ -0,0 +1 @@
+80b7897ceb6bd7531708509b50afeab36a4b73fd
diff --git a/packages/open-on-github/spec/fixtures/project/file1.txt b/packages/open-on-github/spec/fixtures/project/file1.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/packages/open-on-github/spec/fixtures/project/file2.txt b/packages/open-on-github/spec/fixtures/project/file2.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/packages/open-on-github/spec/fixtures/project/img1.jpg b/packages/open-on-github/spec/fixtures/project/img1.jpg
new file mode 100644
index 000000000..14465a58c
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diff --git a/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/HEAD b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/HEAD
new file mode 100644
index 000000000..bd14a9560
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/baz
diff --git a/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/config b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/config
new file mode 100644
index 000000000..616202ee6
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/config
@@ -0,0 +1,13 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
+	precomposeunicode = false
+[remote "upstream/color"]
+	url = https://github.com/some-user/some-repo.git
+	fetch = +refs/heads/*:refs/remotes/upstream/color/*
+[branch "baz"]
+	remote = upstream/color
+	merge = refs/heads/baz
diff --git a/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/index b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/index
new file mode 100644
index 000000000..b198ef5c5
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diff --git a/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/5c/dc5a2508dfc832223df221a8e55fb6ccf95932 b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/5c/dc5a2508dfc832223df221a8e55fb6ccf95932
new file mode 100644
index 000000000..1a76bd523
Binary files /dev/null and b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/5c/dc5a2508dfc832223df221a8e55fb6ccf95932 differ
diff --git a/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd
new file mode 100644
index 000000000..1d0efa72b
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/80/b7897ceb6bd7531708509b50afeab36a4b73fd
@@ -0,0 +1 @@
+x
��A�0@Q�=�\@S��	1nu�
ʴ�5@
��ܾ��\��4�d���G�6$�MH����(
-sr�*�J������XC��g����O�O\�4��\g\Kp�g�զ�X�	u��?��R_�@�
\ No newline at end of file
diff --git a/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/98/4f6dfa5e1ac016cb4e4d11f39343efb3c27d7f b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/98/4f6dfa5e1ac016cb4e4d11f39343efb3c27d7f
new file mode 100644
index 000000000..f9c9b28b8
Binary files /dev/null and b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/98/4f6dfa5e1ac016cb4e4d11f39343efb3c27d7f differ
diff --git a/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24 b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24
new file mode 100644
index 000000000..53983f269
Binary files /dev/null and b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/objects/bf/b04df9a5bf7ad257575599558b54b3fc335f24 differ
diff --git a/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/refs/heads/baz b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/refs/heads/baz
new file mode 100644
index 000000000..535819092
--- /dev/null
+++ b/packages/open-on-github/spec/fixtures/remote-with-slash-in-name.git/refs/heads/baz
@@ -0,0 +1 @@
+80b7897ceb6bd7531708509b50afeab36a4b73fd
diff --git a/packages/open-on-github/spec/get-active-path-spec.js b/packages/open-on-github/spec/get-active-path-spec.js
new file mode 100644
index 000000000..261909f33
--- /dev/null
+++ b/packages/open-on-github/spec/get-active-path-spec.js
@@ -0,0 +1,75 @@
+const path = require('path')
+const getActivePath = require('../lib/get-active-path')
+
+const { it, fit, beforeEach, afterEach } = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+const projectPath = path.resolve(__dirname, './fixtures/project/')
+const file1 = path.resolve(__dirname, './fixtures/project/file1.txt')
+const file2 = path.resolve(__dirname, './fixtures/project/file2.txt')
+const img1 = path.resolve(__dirname, './fixtures/project/img1.png')
+
+describe('getActivePath', function () {
+  let workspaceElement
+  beforeEach(async function () {
+    workspaceElement = atom.views.getView(atom.workspace)
+    await atom.packages.activatePackage('tabs')
+    await atom.packages.activatePackage('tree-view')
+    atom.project.setPaths([projectPath])
+  })
+
+  it('returns project path when no target', function () {
+    const itemPath = getActivePath()
+    expect(itemPath).toBe(projectPath)
+  })
+
+  it('returns project path when nothing open', function () {
+    const itemPath = getActivePath(workspaceElement)
+    expect(itemPath).toBe(projectPath)
+  })
+
+  it('returns active file path when workspace is selected', async function () {
+    await atom.workspace.open(file1)
+    await atom.workspace.open(file2)
+
+    const itemPath = getActivePath(workspaceElement)
+    expect(itemPath).toBe(file2)
+  })
+
+  it('returns file path when tree view is selected', async function () {
+    await atom.workspace.open(file1)
+    await atom.workspace.open(file2)
+
+    const { treeView } = atom.packages.getLoadedPackage('tree-view').mainModule
+    const file1Target = treeView.selectEntryForPath(file1)
+
+    const itemPath = getActivePath(file1Target)
+    expect(itemPath).toBe(file1)
+  })
+
+  it('returns file path when tab is selected', async function () {
+    await atom.workspace.open(file1)
+    await atom.workspace.open(file2)
+    const file1Target = workspaceElement.querySelector(".tab-bar [data-name='file1.txt']")
+
+    const itemPath = getActivePath(file1Target)
+    expect(itemPath).toBe(file1)
+  })
+
+  it('returns project when active pane is not a file', async function () {
+    await atom.packages.activatePackage('settings-view')
+    await atom.workspace.open(file1)
+    await atom.workspace.open('atom://config')
+
+    const itemPath = getActivePath(workspaceElement)
+    expect(itemPath).toBe(projectPath)
+  })
+
+  it('returns active pane path when it is not a text file', async function () {
+    await atom.packages.activatePackage('image-view')
+    await atom.workspace.open(file1)
+    await atom.workspace.open(img1)
+
+    const itemPath = getActivePath(workspaceElement)
+    expect(itemPath).toBe(img1)
+  })
+})
diff --git a/packages/open-on-github/spec/github-file-spec.js b/packages/open-on-github/spec/github-file-spec.js
new file mode 100644
index 000000000..ee2579d02
--- /dev/null
+++ b/packages/open-on-github/spec/github-file-spec.js
@@ -0,0 +1,763 @@
+const fs = require('fs-plus')
+const path = require('path')
+const temp = require('temp').track()
+const GitHubFile = require('../lib/github-file')
+
+const {it, fit, ffit, beforeEach, afterEach} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+describe('GitHubFile', function () {
+  let githubFile
+  let editor
+
+  describe('commands', () => {
+    let workingDirPath
+
+    function fixturePath (fixtureName) {
+      return path.join(__dirname, 'fixtures', `${fixtureName}.git`)
+    }
+
+    function setupWorkingDir (fixtureName) {
+      workingDirPath = temp.mkdirSync('open-on-github-working-dir-')
+      fs.copySync(fixturePath(fixtureName), path.join(workingDirPath, '.git'))
+
+      let subdirectoryPath = path.join(workingDirPath, 'some-dir')
+      fs.makeTreeSync(subdirectoryPath)
+
+      let filePath = path.join(subdirectoryPath, 'some-file.md')
+      fs.writeFileSync(filePath, 'some file content')
+    }
+
+    async function setupGithubFile (filePath = 'some-dir/some-file.md') {
+      atom.project.setPaths([workingDirPath])
+      editor = await atom.workspace.open(filePath)
+      githubFile = GitHubFile.fromPath(editor.getPath())
+      return githubFile
+    }
+
+    describe('open', () => {
+      describe('when the file is openable on GitHub.com', () => {
+        let fixtureName = 'github-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com blob URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.open()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blob/master/some-dir/some-file.md')
+        })
+
+        describe('when text is selected', () => {
+          it('opens the GitHub.com blob URL for the file with the selection range in the hash', () => {
+            atom.config.set('open-on-github.includeLineNumbersInUrls', true)
+            spyOn(githubFile, 'openURLInBrowser')
+            githubFile.open([[0, 0], [1, 1]])
+            expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blob/master/some-dir/some-file.md#L1-L2')
+          })
+        })
+
+        describe("when the file has a '#' in its name", () => {
+          it('opens the GitHub.com blob URL for the file', async () => {
+            editor = await atom.workspace.open('a/b#/test#hash.md')
+            githubFile = GitHubFile.fromPath(editor.getPath())
+            spyOn(githubFile, 'openURLInBrowser')
+            githubFile.open()
+            expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blob/master/a/b%23/test%23hash.md')
+          })
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-wiki'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com wiki URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.open()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/wiki/some-file')
+        })
+      })
+
+      describe('when the file is part of a GitHub gist', () => {
+        let fixtureName = 'github-remote-gist'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile('some-file.md')
+        })
+
+        it('opens the gist.github.com URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.open()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://gist.github.com/s0m3ha5h#file-some-file-md')
+        })
+      })
+
+      describe("when the branch has a '/' in its name", () => {
+        let fixtureName = 'branch-with-slash-in-name'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com blob URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.open()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blob/foo/bar/some-dir/some-file.md')
+        })
+      })
+
+      describe("when the branch has a '#' in its name", () => {
+        let fixtureName = 'branch-with-hash-in-name'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com blob URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.open()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blob/a%23b%23c/some-dir/some-file.md')
+        })
+      })
+
+      describe("when the remote has a '/' in its name", () => {
+        let fixtureName = 'remote-with-slash-in-name'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com blob URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.open()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blob/baz/some-dir/some-file.md')
+        })
+      })
+
+      describe('when the local branch is not tracked', () => {
+        let fixtureName = 'non-tracked-branch'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com blob URL for the file on the master branch', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.open()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blob/master/some-dir/some-file.md')
+        })
+      })
+
+      describe('when there is no remote', () => {
+        let fixtureName = 'no-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('shows a warning', () => {
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.open()
+          expect(atom.notifications.addWarning).toHaveBeenCalledWith('No URL defined for remote: null')
+        })
+      })
+
+      describe("when the root directory doesn't have a git repo", () => {
+        beforeEach(async () => {
+          workingDirPath = temp.mkdirSync('open-on-github-working-dir')
+          await setupGithubFile()
+        })
+
+        it('does nothing', () => {
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.open()
+          expect(atom.notifications.addWarning).toHaveBeenCalled()
+          expect(atom.notifications.addWarning.mostRecentCall.args[0]).toContain('No repository found')
+        })
+      })
+
+      describe('when the remote repo is not hosted on github.com', () => {
+        let fixtureName = 'github-enterprise-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          githubFile = await setupGithubFile()
+        })
+
+        it('opens a GitHub enterprise style blob URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.open()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://git.enterprize.me/some-user/some-repo/blob/master/some-dir/some-file.md')
+        })
+      })
+
+      describe('when the git config is set', () => {
+        let fixtureName = 'git-config'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          githubFile = await setupGithubFile()
+        })
+
+        it('opens a URL that is specified by the git config', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.open()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/foo/bar/blob/some-branch/some-dir/some-file.md')
+        })
+      })
+    })
+
+    describe('openOnMaster', () => {
+      describe('when the file is openable on GitHub.com', () => {
+        let fixtureName = 'non-tracked-branch'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com blob URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.openOnMaster()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blob/master/some-dir/some-file.md')
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-wiki'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com wiki URL for the file and behaves exactly like open', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.openOnMaster()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/wiki/some-file')
+        })
+      })
+
+      describe('when the file is part of a GitHub gist', () => {
+        let fixtureName = 'github-remote-gist'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile('some-file.md')
+        })
+
+        it('opens the gist.github.com URL for the file and behaves exactly like open', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.openOnMaster()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://gist.github.com/s0m3ha5h#file-some-file-md')
+        })
+      })
+    })
+
+    describe('blame', () => {
+      describe('when the file is openable on GitHub.com', () => {
+        let fixtureName = 'github-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com blame URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.blame()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blame/master/some-dir/some-file.md')
+        })
+
+        describe('when text is selected', () => {
+          it('opens the GitHub.com blame URL for the file with the selection range in the hash', () => {
+            atom.config.set('open-on-github.includeLineNumbersInUrls', true)
+            spyOn(githubFile, 'openURLInBrowser')
+            githubFile.blame([[0, 0], [1, 1]])
+            expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blame/master/some-dir/some-file.md#L1-L2')
+          })
+        })
+      })
+
+      describe('when the local branch is not tracked', () => {
+        let fixtureName = 'non-tracked-branch'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com blame URL for the file on the master branch', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.blame()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/blame/master/some-dir/some-file.md')
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-wiki'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('shows a warning and does not attempt to open a URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.blame()
+          expect(atom.notifications.addWarning).toHaveBeenCalledWith('Blames do not exist for wikis')
+          expect(githubFile.openURLInBrowser).not.toHaveBeenCalled()
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-gist'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('shows a warning and does not attempt to open a URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.blame()
+          expect(atom.notifications.addWarning).toHaveBeenCalledWith('Blames do not exist for gists')
+          expect(githubFile.openURLInBrowser).not.toHaveBeenCalled()
+        })
+      })
+    })
+
+    describe('branchCompare', () => {
+      describe('when the file is openable on GitHub.com', () => {
+        let fixtureName = 'github-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com branch compare URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.openBranchCompare()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/compare/master')
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-wiki'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('shows a warning and does not attempt to open a URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.openBranchCompare()
+          expect(atom.notifications.addWarning).toHaveBeenCalledWith('Branches do not exist for wikis')
+          expect(githubFile.openURLInBrowser).not.toHaveBeenCalled()
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-gist'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('shows a warning and does not attempt to open a URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.openBranchCompare()
+          expect(atom.notifications.addWarning).toHaveBeenCalledWith('Branches do not exist for gists')
+          expect(githubFile.openURLInBrowser).not.toHaveBeenCalled()
+        })
+      })
+    })
+
+    describe('history', () => {
+      describe('when the file is openable on GitHub.com', () => {
+        let fixtureName = 'github-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com history URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.history()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/commits/master/some-dir/some-file.md')
+        })
+      })
+
+      describe('when the local branch is not tracked', () => {
+        let fixtureName = 'non-tracked-branch'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com history URL for the file on the master branch', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.history()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/commits/master/some-dir/some-file.md')
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-wiki'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com wiki history URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.history()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/wiki/some-file/_history')
+        })
+      })
+
+      describe('when the file is part of a GitHub gist', () => {
+        let fixtureName = 'github-remote-gist'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile('some-file.md')
+        })
+
+        it('opens the gist.github.com history URL for the gist', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.history()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://gist.github.com/s0m3ha5h/revisions')
+        })
+      })
+    })
+
+    describe('copyURL', () => {
+      describe('when the file is openable on GitHub.com', () => {
+        let fixtureName = 'github-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          atom.config.set('open-on-github.includeLineNumbersInUrls', true)
+          await setupGithubFile()
+        })
+
+        describe('when text is selected', () => {
+          it('copies the URL to the clipboard with the selection range in the hash', () => {
+            githubFile.copyURL([[0, 0], [1, 1]])
+            expect(atom.clipboard.read()).toBe('https://github.com/some-user/some-repo/blob/80b7897ceb6bd7531708509b50afeab36a4b73fd/some-dir/some-file.md#L1-L2')
+          })
+        })
+
+        describe('when no text is selected', () => {
+          it('copies the URL to the clipboard with the cursor location in the hash', () => {
+            githubFile.copyURL([[2, 1], [2, 1]])
+            expect(atom.clipboard.read()).toBe('https://github.com/some-user/some-repo/blob/80b7897ceb6bd7531708509b50afeab36a4b73fd/some-dir/some-file.md#L3')
+          })
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-wiki'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          atom.config.set('open-on-github.includeLineNumbersInUrls', true)
+          await setupGithubFile()
+        })
+
+        it('copies the GitHub.com wiki URL to the clipboard and ignores any selection ranges', () => {
+          githubFile.copyURL([[0, 0], [1, 1]])
+          expect(atom.clipboard.read()).toBe('https://github.com/some-user/some-repo/wiki/some-file/80b7897ceb6bd7531708509b50afeab36a4b73fd')
+        })
+      })
+
+      describe('when the file is part of a GitHub gist', () => {
+        let fixtureName = 'github-remote-gist'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          atom.config.set('open-on-github.includeLineNumbersInUrls', true)
+          await setupGithubFile('some-file.md')
+        })
+
+        describe('when text is selected', () => {
+          it('copies the gist.github.com URL with the selection range with the selection range appended', () => {
+            githubFile.copyURL([[0, 0], [1, 1]])
+            expect(atom.clipboard.read()).toBe('https://gist.github.com/s0m3ha5h/80b7897ceb6bd7531708509b50afeab36a4b73fd#file-some-file-md-L1-L2')
+          })
+        })
+
+        describe('when no text is selected', () => {
+          it('copies the gist.github.com URL with the selection range with the cursor location appended', () => {
+            githubFile.copyURL([[2, 1], [2, 1]])
+            expect(atom.clipboard.read()).toBe('https://gist.github.com/s0m3ha5h/80b7897ceb6bd7531708509b50afeab36a4b73fd#file-some-file-md-L3')
+          })
+        })
+      })
+    })
+
+    describe('openRepository', () => {
+      describe('when the file is openable on GitHub.com', () => {
+        let fixtureName = 'github-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com repository URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.openRepository()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo')
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-wiki'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com wiki history URL for the file', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.openRepository()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/wiki')
+        })
+      })
+
+      describe('when the file is part of a GitHub gist', () => {
+        let fixtureName = 'github-remote-gist'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile('some-file.md')
+        })
+
+        it('opens the gist.github.com repository URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.openRepository()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://gist.github.com/s0m3ha5h')
+        })
+      })
+    })
+
+    describe('openIssues', () => {
+      describe('when the file is openable on GitHub.com', () => {
+        let fixtureName = 'github-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com issues URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.openIssues()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/issues')
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-wiki'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('shows a warning and does not attempt to open a URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.openIssues()
+          expect(atom.notifications.addWarning).toHaveBeenCalledWith('Issues do not exist for wikis')
+          expect(githubFile.openURLInBrowser).not.toHaveBeenCalled()
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-gist'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('shows a warning and does not attempt to open a URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.openIssues()
+          expect(atom.notifications.addWarning).toHaveBeenCalledWith('Issues do not exist for gists')
+          expect(githubFile.openURLInBrowser).not.toHaveBeenCalled()
+        })
+      })
+    })
+
+    describe('openPullRequests', () => {
+      describe('when the file is openable on GitHub.com', () => {
+        let fixtureName = 'github-remote'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('opens the GitHub.com pull requests URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          githubFile.openPullRequests()
+          expect(githubFile.openURLInBrowser).toHaveBeenCalledWith('https://github.com/some-user/some-repo/pulls')
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-wiki'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('shows a warning and does not attempt to open a URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.openPullRequests()
+          expect(atom.notifications.addWarning).toHaveBeenCalledWith('Pull requests do not exist for wikis')
+          expect(githubFile.openURLInBrowser).not.toHaveBeenCalled()
+        })
+      })
+
+      describe('when the file is part of a GitHub wiki', () => {
+        let fixtureName = 'github-remote-gist'
+
+        beforeEach(async () => {
+          setupWorkingDir(fixtureName)
+          await setupGithubFile()
+        })
+
+        it('shows a warning and does not attempt to open a URL', () => {
+          spyOn(githubFile, 'openURLInBrowser')
+          spyOn(atom.notifications, 'addWarning')
+          githubFile.openPullRequests()
+          expect(atom.notifications.addWarning).toHaveBeenCalledWith('Pull requests do not exist for gists')
+          expect(githubFile.openURLInBrowser).not.toHaveBeenCalled()
+        })
+      })
+    })
+  })
+
+  describe('githubRepoURL', () => {
+    beforeEach(() => {
+      githubFile = new GitHubFile()
+    })
+
+    it('returns the GitHub.com URL for an HTTPS remote URL', () => {
+      githubFile.gitURL = () => 'https://github.com/foo/bar.git'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar')
+    })
+
+    it('will only strip a single .git suffix', () => {
+      githubFile.gitURL = () => 'https://github.com/foo/bar.git.git'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar.git')
+
+      githubFile.gitURL = () => 'https://github.com/foo/bar.git.other.git'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar.git.other')
+    })
+
+    it('returns the GitHub.com URL for an HTTP remote URL', () => {
+      githubFile.gitURL = () => 'http://github.com/foo/bar.git'
+      expect(githubFile.githubRepoURL()).toBe('http://github.com/foo/bar')
+    })
+
+    it('returns the GitHub.com URL for an SSH remote URL', () => {
+      githubFile.gitURL = () => 'git@github.com:foo/bar.git'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar')
+    })
+
+    it('returns a GitHub enterprise URL for a non-Github.com remote URL', () => {
+      githubFile.gitURL = () => 'https://git.enterprize.me/foo/bar.git'
+      expect(githubFile.githubRepoURL()).toBe('https://git.enterprize.me/foo/bar')
+
+      githubFile.gitURL = () => 'git@git.enterprize.me:foo/bar.git'
+      expect(githubFile.githubRepoURL()).toBe('https://git.enterprize.me/foo/bar')
+    })
+
+    it('returns the GitHub.com URL for a git:// URL', () => {
+      githubFile.gitURL = () => 'git://github.com/foo/bar.git'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar')
+    })
+
+    it('returns the GitHub.com URL for a user@github.com URL', () => {
+      githubFile.gitURL = () => 'https://user@github.com/foo/bar.git'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar')
+    })
+
+    it('returns the GitHub.com URL for a ssh:// URL', () => {
+      githubFile.gitURL = () => 'ssh://git@github.com/foo/bar.git'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar')
+    })
+
+    it('returns undefined for Bitbucket URLs', () => {
+      githubFile.gitURL = () => 'https://bitbucket.org/somebody/repo.git'
+      expect(githubFile.githubRepoURL()).toBeUndefined()
+
+      githubFile.gitURL = () => 'https://bitbucket.org/somebody/repo'
+      expect(githubFile.githubRepoURL()).toBeUndefined()
+
+      githubFile.gitURL = () => 'git@bitbucket.org:somebody/repo.git'
+      expect(githubFile.githubRepoURL()).toBeUndefined()
+
+      githubFile.gitURL = () => 'git@bitbucket.org:somebody/repo'
+      expect(githubFile.githubRepoURL()).toBeUndefined()
+    })
+
+    it('removes leading and trailing slashes', () => {
+      githubFile.gitURL = () => 'https://github.com/foo/bar/'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar')
+
+      githubFile.gitURL = () => 'https://github.com/foo/bar//////'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar')
+
+      githubFile.gitURL = () => 'git@github.com:/foo/bar.git'
+      expect(githubFile.githubRepoURL()).toBe('https://github.com/foo/bar')
+    })
+  })
+
+  describe('when determining whether a repository is a Gist repository or not', () => {
+    it('does not throw when the repository URL is a Bitbucket URL (regression)', () => {
+      githubFile.gitURL = () => 'https://bitbucket.org/somebody/repo.git'
+      expect(githubFile.isGistURL()).toBe(false)
+    })
+  })
+
+  it('activates when a command is triggered on the active editor', async () => {
+    const activationPromise = atom.packages.activatePackage('open-on-github')
+
+    await atom.workspace.open()
+    atom.commands.dispatch(atom.views.getView(atom.workspace.getActivePane()), 'open-on-github:file')
+    await activationPromise
+  })
+})
diff --git a/packages/package-generator/.gitignore b/packages/package-generator/.gitignore
new file mode 100644
index 000000000..3c3629e64
--- /dev/null
+++ b/packages/package-generator/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/packages/package-generator/CONTRIBUTING.md b/packages/package-generator/CONTRIBUTING.md
new file mode 100644
index 000000000..9c8ac3e5b
--- /dev/null
+++ b/packages/package-generator/CONTRIBUTING.md
@@ -0,0 +1 @@
+[See how you can contribute](https://github.com/pulsar-edit/.github/blob/main/CONTRIBUTING.md)
diff --git a/packages/package-generator/README.md b/packages/package-generator/README.md
new file mode 100644
index 000000000..470cdff2c
--- /dev/null
+++ b/packages/package-generator/README.md
@@ -0,0 +1,3 @@
+# Package Generator package
+
+Generates and opens a new sample package, language, or syntax theme in Pulsar.
diff --git a/packages/package-generator/lib/main.js b/packages/package-generator/lib/main.js
new file mode 100644
index 000000000..0b59d38b1
--- /dev/null
+++ b/packages/package-generator/lib/main.js
@@ -0,0 +1,11 @@
+const PackageGeneratorView = require('./package-generator-view')
+
+module.exports = {
+  activate () {
+    this.view = new PackageGeneratorView()
+  },
+
+  deactivate () {
+    if (this.view) this.view.destroy()
+  }
+}
diff --git a/packages/package-generator/lib/package-generator-view.js b/packages/package-generator/lib/package-generator-view.js
new file mode 100644
index 000000000..2a22caa02
--- /dev/null
+++ b/packages/package-generator/lib/package-generator-view.js
@@ -0,0 +1,149 @@
+const path = require('path')
+const _ = require('underscore-plus')
+const {TextEditor, BufferedProcess, CompositeDisposable, Disposable} = require('atom')
+const fs = require('fs-plus')
+
+module.exports =
+class PackageGeneratorView {
+  constructor () {
+    this.disposables = new CompositeDisposable()
+
+    this.element = document.createElement('div')
+    this.element.classList.add('package-generator')
+
+    this.miniEditor = new TextEditor({mini: true})
+    this.element.appendChild(this.miniEditor.element)
+
+    this.error = document.createElement('div')
+    this.error.classList.add('error')
+    this.element.appendChild(this.error)
+
+    this.message = document.createElement('div')
+    this.message.classList.add('message')
+    this.element.appendChild(this.message)
+
+    this.disposables.add(atom.commands.add('atom-workspace', {
+      'package-generator:generate-package': () => this.attach('package'),
+      'package-generator:generate-language-package': () => this.attach('language'),
+      'package-generator:generate-syntax-theme': () => this.attach('theme')
+    }))
+
+    const blurHandler = () => this.close()
+    this.miniEditor.element.addEventListener('blur', blurHandler)
+    this.disposables.add(new Disposable(() => this.miniEditor.element.removeEventListener('blur', blurHandler)))
+    this.disposables.add(atom.commands.add(this.element, {
+      'core:confirm': () => this.confirm(),
+      'core:cancel': () => this.close()
+    }))
+  }
+
+  destroy () {
+    if (this.panel != null) this.panel.destroy()
+    this.disposables.dispose()
+  }
+
+  attach (mode) {
+    this.mode = mode
+    if (this.panel == null) this.panel = atom.workspace.addModalPanel({item: this, visible: false})
+    this.previouslyFocusedElement = document.activeElement
+    this.panel.show()
+    this.message.textContent = `Enter ${this.mode} path`
+    if (this.mode === 'package') {
+      this.setPathText('my-package')
+    } else if (this.mode === 'language') {
+      this.setPathText('language-my-language', [9, Infinity])
+    } else {
+      this.setPathText('my-theme-syntax', [0, 8])
+    }
+    this.miniEditor.element.focus()
+  }
+
+  setPathText (placeholderName, rangeToSelect) {
+    if (rangeToSelect == null) rangeToSelect = [0, placeholderName.length]
+    const packagesDirectory = this.getPackagesDirectory()
+    this.miniEditor.setText(path.join(packagesDirectory, placeholderName))
+    const pathLength = this.miniEditor.getText().length
+    const endOfDirectoryIndex = pathLength - placeholderName.length
+    this.miniEditor.setSelectedBufferRange([[0, endOfDirectoryIndex + rangeToSelect[0]], [0, endOfDirectoryIndex + rangeToSelect[1]]])
+  }
+
+  close () {
+    if (!this.panel.isVisible()) return
+    this.panel.hide()
+    if (this.previouslyFocusedElement != null) this.previouslyFocusedElement.focus()
+  }
+
+  confirm () {
+    if (this.validPackagePath()) {
+      this.createPackageFiles(() => {
+        const packagePath = this.getPackagePath()
+        atom.open({pathsToOpen: [packagePath]})
+        this.close()
+      })
+    }
+  }
+
+  getPackagePath () {
+    const packagePath = fs.normalize(this.miniEditor.getText().trim())
+    const packageName = _.dasherize(path.basename(packagePath))
+    return path.join(path.dirname(packagePath), packageName)
+  }
+
+  getPackagesDirectory () {
+    return process.env.ATOM_REPOS_HOME || atom.config.get('core.projectHome') || path.join(fs.getHomeDirectory(), 'github')
+  }
+
+  validPackagePath () {
+    if (fs.existsSync(this.getPackagePath())) {
+      this.error.textContent = `Path already exists at '${this.getPackagePath()}'`
+      this.error.style.display = 'block'
+      return false
+    } else {
+      return true
+    }
+  }
+
+  getInitOptions (packagePath) {
+    const options = [`--${this.mode}`, packagePath]
+    if (this.mode !== 'theme') {
+      return [...options, '--syntax', atom.config.get('package-generator.packageSyntax')]
+    } else {
+      return options
+    }
+  }
+
+  initPackage (packagePath, callback) {
+    const command = ['init'].concat(this.getInitOptions(packagePath))
+    this.runCommand(atom.packages.getApmPath(), command, callback)
+  }
+
+  linkPackage (packagePath, callback) {
+    const args = ['link']
+    if (atom.config.get('package-generator.createInDevMode')) args.push('--dev')
+    args.push(packagePath.toString())
+
+    this.runCommand(atom.packages.getApmPath(), args, callback)
+  }
+
+  isStoredInDotAtom (packagePath) {
+    const packagesPath = path.join(atom.getConfigDirPath(), 'packages', path.sep)
+    if (packagePath.startsWith(packagesPath)) return true
+
+    const devPackagesPath = path.join(atom.getConfigDirPath(), 'dev', 'packages', path.sep)
+    return packagePath.startsWith(devPackagesPath)
+  }
+
+  createPackageFiles (callback) {
+    const packagePath = this.getPackagePath()
+
+    if (this.isStoredInDotAtom(packagePath)) {
+      this.initPackage(packagePath, callback)
+    } else {
+      this.initPackage(packagePath, () => this.linkPackage(packagePath, callback))
+    }
+  }
+
+  runCommand (command, args, exit) {
+    this.process = new BufferedProcess({command, args, exit})
+  }
+}
diff --git a/packages/package-generator/menus/package-generator.cson b/packages/package-generator/menus/package-generator.cson
new file mode 100644
index 000000000..d693bf40d
--- /dev/null
+++ b/packages/package-generator/menus/package-generator.cson
@@ -0,0 +1,10 @@
+'menu': [
+  'label': 'Packages'
+  'submenu': [
+    'label': 'Package Generator'
+    'submenu': [
+      { 'label': 'Generate Package', 'command': 'package-generator:generate-package' }
+      { 'label': 'Generate Syntax Theme', 'command': 'package-generator:generate-syntax-theme' }
+    ]
+  ]
+]
diff --git a/packages/package-generator/package-lock.json b/packages/package-generator/package-lock.json
new file mode 100644
index 000000000..81efde83e
--- /dev/null
+++ b/packages/package-generator/package-lock.json
@@ -0,0 +1,338 @@
+{
+  "name": "package-generator",
+  "version": "1.3.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "package-generator",
+      "version": "1.3.0",
+      "license": "MIT",
+      "dependencies": {
+        "fs-plus": "^3.0.0",
+        "temp": "^0.8.1",
+        "underscore-plus": "^1.0.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/async": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha512-nSVgobk4rv61R9PUSDtYt7mPVB2olxNR5RWJcAsH676/ef11bUZwvu7+RGYrYauVdDPcO519v68wRhXQtxsV9w=="
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw=="
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="
+    },
+    "node_modules/fs-plus": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/fs-plus/-/fs-plus-3.1.1.tgz",
+      "integrity": "sha512-Se2PJdOWXqos1qVTkvqqjb0CSnfBnwwD+pq+z4ksT+e97mEShod/hrNg0TRCCsXPbJzcIq+NuzQhigunMWMJUA==",
+      "dependencies": {
+        "async": "^1.5.2",
+        "mkdirp": "^0.5.1",
+        "rimraf": "^2.5.2",
+        "underscore-plus": "1.x"
+      }
+    },
+    "node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw=="
+    },
+    "node_modules/glob": {
+      "version": "7.2.3",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
+      "integrity": "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q==",
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.1.1",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha512-k92I/b08q4wvFscXCLvqfsHCrjrF7yiXsQuIVvVE7N82W3+aqpzuUdBbfhWcy/FZR3/4IgflMgKLOsvPDrGCJA==",
+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "node_modules/inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+    },
+    "node_modules/minimatch": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/minimist": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.7.tgz",
+      "integrity": "sha512-bzfL1YUZsP41gmu/qjrEk0Q6i2ix/cVeAhbCbqH9u3zYutS1cLg00qhrD0M2MVdCcx4Sc0UpP2eBWo9rotpq6g==",
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/mkdirp": {
+      "version": "0.5.6",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
+      "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
+      "dependencies": {
+        "minimist": "^1.2.6"
+      },
+      "bin": {
+        "mkdirp": "bin/cmd.js"
+      }
+    },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w==",
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha512-AVbw3UJ2e9bq64vSaS9Am0fje1Pa8pbGqTTsmXfaIiMpnr5DlDhfJOuLj9Sf95ZPVDAUerDfEk88MPmPe7UCQg==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/rimraf": {
+      "version": "2.7.1",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+      "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
+      "dependencies": {
+        "glob": "^7.1.3"
+      },
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/temp": {
+      "version": "0.8.4",
+      "resolved": "https://registry.npmjs.org/temp/-/temp-0.8.4.tgz",
+      "integrity": "sha512-s0ZZzd0BzYv5tLSptZooSjK8oj6C+c19p7Vqta9+6NPOf7r+fxq0cJe6/oN4LTC79sy5NY8ucOJNgwsKCSbfqg==",
+      "dependencies": {
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+      },
+      "engines": {
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+      }
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+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
+      "integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
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+      },
+      "bin": {
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+      }
+    },
+    "node_modules/underscore": {
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+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
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+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    },
+    "node_modules/wrappy": {
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+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="
+    }
+  },
+  "dependencies": {
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+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha512-nSVgobk4rv61R9PUSDtYt7mPVB2olxNR5RWJcAsH676/ef11bUZwvu7+RGYrYauVdDPcO519v68wRhXQtxsV9w=="
+    },
+    "balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw=="
+    },
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+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
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+      "requires": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="
+    },
+    "fs-plus": {
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+      "resolved": "https://registry.npmjs.org/fs-plus/-/fs-plus-3.1.1.tgz",
+      "integrity": "sha512-Se2PJdOWXqos1qVTkvqqjb0CSnfBnwwD+pq+z4ksT+e97mEShod/hrNg0TRCCsXPbJzcIq+NuzQhigunMWMJUA==",
+      "requires": {
+        "async": "^1.5.2",
+        "mkdirp": "^0.5.1",
+        "rimraf": "^2.5.2",
+        "underscore-plus": "1.x"
+      }
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+    "fs.realpath": {
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+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
+      "integrity": "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q==",
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+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.1.1",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
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+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
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+      "requires": {
+        "brace-expansion": "^1.1.7"
+      }
+    },
+    "minimist": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.7.tgz",
+      "integrity": "sha512-bzfL1YUZsP41gmu/qjrEk0Q6i2ix/cVeAhbCbqH9u3zYutS1cLg00qhrD0M2MVdCcx4Sc0UpP2eBWo9rotpq6g=="
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+    "mkdirp": {
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+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
+      "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
+      "requires": {
+        "minimist": "^1.2.6"
+      }
+    },
+    "once": {
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+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w==",
+      "requires": {
+        "wrappy": "1"
+      }
+    },
+    "path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
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+    },
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+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+      "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
+      "requires": {
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+      "version": "0.8.4",
+      "resolved": "https://registry.npmjs.org/temp/-/temp-0.8.4.tgz",
+      "integrity": "sha512-s0ZZzd0BzYv5tLSptZooSjK8oj6C+c19p7Vqta9+6NPOf7r+fxq0cJe6/oN4LTC79sy5NY8ucOJNgwsKCSbfqg==",
+      "requires": {
+        "rimraf": "~2.6.2"
+      },
+      "dependencies": {
+        "rimraf": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
+          "integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
+          "requires": {
+            "glob": "^7.1.3"
+          }
+        }
+      }
+    },
+    "underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
+    "underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "requires": {
+        "underscore": "^1.9.1"
+      }
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="
+    }
+  }
+}
diff --git a/packages/package-generator/package.json b/packages/package-generator/package.json
new file mode 100644
index 000000000..a8761047e
--- /dev/null
+++ b/packages/package-generator/package.json
@@ -0,0 +1,39 @@
+{
+  "name": "package-generator",
+  "version": "1.3.0",
+  "main": "./lib/main",
+  "description": "Generates and opens a new sample package, language, or syntax theme.",
+  "license": "MIT",
+  "activationCommands": {
+    "atom-workspace": [
+      "package-generator:generate-package",
+      "package-generator:generate-language-package",
+      "package-generator:generate-syntax-theme"
+    ]
+  },
+  "dependencies": {
+    "fs-plus": "^3.0.0",
+    "temp": "^0.8.1",
+    "underscore-plus": "^1.0.0"
+  },
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "engines": {
+    "atom": "*"
+  },
+  "configSchema": {
+    "createInDevMode": {
+      "default": false,
+      "type": "boolean",
+      "description": "When disabled, generated packages are linked into Pulsar in both normal mode and dev mode. When enabled, generated packages are linked into Pulsar only in dev mode."
+    },
+    "packageSyntax": {
+      "default": "javascript",
+      "type": "string",
+      "enum": [
+        "coffeescript",
+        "javascript"
+      ],
+      "description": "The syntax to generate packages with."
+    }
+  }
+}
diff --git a/packages/package-generator/spec/async-spec-helpers.js b/packages/package-generator/spec/async-spec-helpers.js
new file mode 100644
index 000000000..73002c049
--- /dev/null
+++ b/packages/package-generator/spec/async-spec-helpers.js
@@ -0,0 +1,103 @@
+/** @babel */
+
+export function beforeEach (fn) {
+  global.beforeEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+export function afterEach (fn) {
+  global.afterEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+['it', 'fit', 'ffit', 'fffit'].forEach(function (name) {
+  module.exports[name] = function (description, fn) {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, function () {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise(() => result)
+      }
+    })
+  }
+})
+
+export async function conditionPromise (condition, description = 'anonymous condition') {
+  const startTime = Date.now()
+
+  while (true) {
+    await timeoutPromise(100)
+
+    if (await condition()) {
+      return
+    }
+
+    if (Date.now() - startTime > 5000) {
+      throw new Error('Timed out waiting on ' + description)
+    }
+  }
+}
+
+export function timeoutPromise (timeout) {
+  return new Promise(function (resolve) {
+    global.setTimeout(resolve, timeout)
+  })
+}
+
+function waitsForPromise (fn) {
+  const promise = fn()
+  global.waitsFor('spec promise to resolve', function (done) {
+    promise.then(done, function (error) {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
+
+export function emitterEventPromise (emitter, event, timeout = 15000) {
+  return new Promise((resolve, reject) => {
+    const timeoutHandle = setTimeout(() => {
+      reject(new Error(`Timed out waiting for '${event}' event`))
+    }, timeout)
+    emitter.once(event, () => {
+      clearTimeout(timeoutHandle)
+      resolve()
+    })
+  })
+}
+
+export function promisify (original) {
+  return function (...args) {
+    return new Promise((resolve, reject) => {
+      args.push((err, ...results) => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve(...results)
+        }
+      })
+
+      return original(...args)
+    })
+  }
+}
+
+export function promisifySome (obj, fnNames) {
+  const result = {}
+  for (const fnName of fnNames) {
+    result[fnName] = promisify(obj[fnName])
+  }
+  return result
+}
diff --git a/packages/package-generator/spec/package-generator-spec.js b/packages/package-generator/spec/package-generator-spec.js
new file mode 100644
index 000000000..c07ba921c
--- /dev/null
+++ b/packages/package-generator/spec/package-generator-spec.js
@@ -0,0 +1,218 @@
+const path = require('path')
+const fs = require('fs-plus')
+const temp = require('temp')
+const PackageGeneratorView = require('../lib/package-generator-view')
+
+const {it, fit, ffit, afterEach, beforeEach, conditionPromise} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+describe('Package Generator', () => {
+  let packageGeneratorView = null
+
+  const getWorkspaceView = () => atom.views.getView(atom.workspace)
+
+  const typeToPackageNameMap = new Map([
+    ['package', 'my-package'],
+    ['language', 'language-my-language'],
+    ['theme', 'my-theme-syntax']
+  ])
+
+  const typeToSelectedTextMap = new Map([
+    ['package', 'my-package'],
+    ['language', 'my-language'],
+    ['theme', 'my-theme']
+  ])
+
+  beforeEach(async () => {
+    await atom.workspace.open('sample.js')
+
+    packageGeneratorView = new PackageGeneratorView()
+  })
+
+  for (const [type, name] of typeToPackageNameMap) {
+    describe(`when generating a ${type}`, () => {
+      it('displays a mini-editor with the correct text and selection', () => {
+        packageGeneratorView.attach(type)
+        const editor = packageGeneratorView.miniEditor
+        expect(editor.getSelectedText()).toEqual(typeToSelectedTextMap.get(type))
+        const base = atom.config.get('core.projectHome')
+        expect(editor.getText()).toEqual(path.join(base, name))
+      })
+    })
+  }
+
+  describe('when ATOM_REPOS_HOME is set', () => {
+    beforeEach(() => {
+      process.env.ATOM_REPOS_HOME = '/atom/repos/home'
+    })
+
+    afterEach(() => {
+      delete process.env.ATOM_REPOS_HOME
+    })
+
+    it('overrides the default path', () => {
+      packageGeneratorView.attach('package')
+      const editor = packageGeneratorView.miniEditor
+      expect(editor.getSelectedText()).toEqual('my-package')
+      const base = '/atom/repos/home'
+      expect(editor.getText()).toEqual(path.join(base, 'my-package'))
+    })
+  })
+
+  describe('when the modal panel is canceled', () => {
+    it('detaches from the DOM and focuses the the previously focused element', () => {
+      jasmine.attachToDOM(getWorkspaceView())
+      packageGeneratorView.attach('theme')
+      expect(packageGeneratorView.previouslyFocusedElement).not.toBeUndefined()
+
+      expect(document.activeElement.closest('atom-text-editor')).toBe(packageGeneratorView.element.querySelector('atom-text-editor'))
+
+      packageGeneratorView.close()
+      expect(atom.workspace.getModalPanels()[0].isVisible()).toBe(false)
+      expect(document.activeElement.closest('atom-text-editor')).toBe(atom.views.getView(atom.workspace.getActiveTextEditor()))
+    })
+  })
+
+  describe('when a package is generated', () => {
+    let [packageName, packagePath, packageRoot] = []
+
+    const packageInitCommandFor = (path, type = 'package', syntax = atom.config.get('package-generator.packageSyntax')) => {
+      if (type !== 'theme') {
+        return ['init', `--${type}`, path, '--syntax', syntax]
+      } else {
+        return ['init', `--${type}`, path]
+      }
+    }
+
+    beforeEach(() => {
+      spyOn(atom, 'open')
+
+      packageRoot = temp.mkdirSync('atom')
+      packageName = 'sweet-package-dude'
+      packagePath = path.join(packageRoot, packageName)
+      fs.removeSync(packageRoot)
+    })
+
+    afterEach(() => fs.removeSync(packageRoot))
+
+    it("forces the package's name to be lowercase with dashes", () => {
+      packageName = 'CamelCaseIsForTheBirds'
+      packagePath = path.join(path.dirname(packagePath), packageName)
+
+      packageGeneratorView.attach('package')
+      const editor = packageGeneratorView.miniEditor
+      editor.setText(packagePath)
+      const apmExecute = spyOn(packageGeneratorView, 'runCommand')
+      packageGeneratorView.confirm()
+
+      expect(apmExecute).toHaveBeenCalled()
+      expect(apmExecute.mostRecentCall.args[0]).toBe(atom.packages.getApmPath())
+      expect(apmExecute.mostRecentCall.args[1]).toEqual(packageInitCommandFor(`${path.join(path.dirname(packagePath), 'camel-case-is-for-the-birds')}`))
+    })
+
+    it("normalizes the package's path", () => {
+      packagePath = path.join('~', 'the-package')
+
+      packageGeneratorView.attach('package')
+      const editor = packageGeneratorView.miniEditor
+      editor.setText(packagePath)
+      const apmExecute = spyOn(packageGeneratorView, 'runCommand')
+      packageGeneratorView.confirm()
+
+      expect(apmExecute).toHaveBeenCalled()
+      expect(apmExecute.mostRecentCall.args[0]).toBe(atom.packages.getApmPath())
+      expect(apmExecute.mostRecentCall.args[1]).toEqual(packageInitCommandFor(`${fs.normalize(packagePath)}`))
+    })
+
+    for (const type of typeToPackageNameMap.keys()) {
+      describe(`when creating a ${type}`, () => {
+        let apmExecute = null
+
+        const generatePackage = async (insidePackagesDirectory) => {
+          const editor = packageGeneratorView.miniEditor
+          spyOn(packageGeneratorView, 'isStoredInDotAtom').andReturn(insidePackagesDirectory)
+          expect(packageGeneratorView.element.parentElement).toBeTruthy()
+          editor.setText(packagePath)
+          apmExecute = spyOn(packageGeneratorView, 'runCommand').andCallFake((command, args, exit) => process.nextTick(() => exit()))
+          packageGeneratorView.confirm()
+          await conditionPromise(() => atom.open.callCount === 1)
+          expect(atom.open).toHaveBeenCalledWith({pathsToOpen: [packagePath]})
+        }
+
+        beforeEach(() => {
+          jasmine.useRealClock()
+          jasmine.attachToDOM(getWorkspaceView())
+          packageGeneratorView.attach(type)
+        })
+
+        describe(`when the ${type} is created outside of the packages directory`, () => {
+          describe('when package-generator.createInDevMode is set to false', () => {
+            it('calls `apm init` and `apm link`', async () => {
+              atom.config.set('package-generator.createInDevMode', false)
+
+              await generatePackage(false)
+              expect(apmExecute.argsForCall[0][0]).toBe(atom.packages.getApmPath())
+              expect(apmExecute.argsForCall[0][1]).toEqual(packageInitCommandFor(`${packagePath}`, type))
+              expect(apmExecute.argsForCall[1][0]).toBe(atom.packages.getApmPath())
+              expect(apmExecute.argsForCall[1][1]).toEqual(['link', `${packagePath}`])
+            })
+          })
+
+          describe('when package-generator.createInDevMode is set to true', () => {
+            it('calls `apm init` and `apm link --dev`', async () => {
+              atom.config.set('package-generator.createInDevMode', true)
+
+              await generatePackage(false)
+              expect(apmExecute.argsForCall[0][0]).toBe(atom.packages.getApmPath())
+              expect(apmExecute.argsForCall[0][1]).toEqual(packageInitCommandFor(`${packagePath}`, type))
+              expect(apmExecute.argsForCall[1][0]).toBe(atom.packages.getApmPath())
+              expect(apmExecute.argsForCall[1][1]).toEqual(['link', '--dev', `${packagePath}`])
+            })
+          })
+        })
+
+        describe(`when the ${type} is created inside the packages directory`, () => {
+          it('calls `apm init`', async () => {
+            await generatePackage(true)
+            expect(apmExecute.argsForCall[0][0]).toBe(atom.packages.getApmPath())
+            expect(apmExecute.argsForCall[0][1]).toEqual(packageInitCommandFor(`${packagePath}`, type))
+            expect(atom.open.argsForCall[0][0].pathsToOpen[0]).toBe(packagePath)
+            expect(apmExecute.argsForCall[1]).toBeUndefined()
+          })
+        })
+
+        describe(`when the ${type} is a coffeescript package`, () => {
+          it('calls `apm init` with the correct syntax option', async () => {
+            atom.config.set('package-generator.packageSyntax', 'coffeescript')
+            await generatePackage(true)
+            expect(apmExecute.argsForCall[0][0]).toBe(atom.packages.getApmPath())
+            expect(apmExecute.argsForCall[0][1]).toEqual(packageInitCommandFor(`${packagePath}`, type, 'coffeescript'))
+          })
+        })
+
+        describe(`when the ${type} is a javascript package`, () => {
+          it('calls `apm init` with the correct syntax option', async () => {
+            atom.config.set('package-generator.packageSyntax', 'javascript')
+            await generatePackage(true)
+            expect(apmExecute.argsForCall[0][0]).toBe(atom.packages.getApmPath())
+            expect(apmExecute.argsForCall[0][1]).toEqual(packageInitCommandFor(`${packagePath}`, type, 'javascript'))
+          })
+        })
+
+        describe(`when the ${type} path already exists`, () => {
+          it('displays an error', () => {
+            fs.makeTreeSync(packagePath)
+
+            const editor = packageGeneratorView.miniEditor
+            editor.setText(packagePath)
+            expect(packageGeneratorView.element.parentElement).toBeTruthy()
+            expect(packageGeneratorView.element.querySelector('.error').offsetHeight).toBe(0)
+
+            packageGeneratorView.confirm()
+            expect(packageGeneratorView.element.parentElement).toBeTruthy()
+            expect(packageGeneratorView.element.querySelector('.error').offsetHeight).not.toBe(0)
+          })
+        })
+      })
+    }
+  })
+})
diff --git a/packages/package-generator/styles/package-generator.less b/packages/package-generator/styles/package-generator.less
new file mode 100644
index 000000000..14dcf4d3c
--- /dev/null
+++ b/packages/package-generator/styles/package-generator.less
@@ -0,0 +1,3 @@
+.package-generator .error {
+  display: none;
+}
diff --git a/packages/settings-view/.gitignore b/packages/settings-view/.gitignore
new file mode 100644
index 000000000..93f136199
--- /dev/null
+++ b/packages/settings-view/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+npm-debug.log
diff --git a/packages/settings-view/README.md b/packages/settings-view/README.md
new file mode 100644
index 000000000..005a814da
--- /dev/null
+++ b/packages/settings-view/README.md
@@ -0,0 +1,57 @@
+# Settings View package
+
+Edit core configuration settings, install and configure packages, and change themes from within Pulsar.
+
+![Settings View](https://cloud.githubusercontent.com/assets/118951/16886698/b0ca5fae-4a8a-11e6-8afc-2c03fda4618c.PNG)
+
+## Usage
+You can open the Settings View by navigating to
+***LNX***: _Edit > Preferences_ -
+***MAC***: _Atom > Preferences_ -
+***WIN***: _File > Settings_.
+
+In order to install new packages and themes, click on the _Install_ section on the left-hand side.
+Once installed, community packages/themes and their settings are housed within their respective section.
+All packages/themes that have updates will be listed under the _Updates_ section. Finally, all keybindings (including ones that community packages have added) are available in the _Keybindings_ section.
+
+Want to learn more? Check out the [Getting Started: Pulsar Basics](https://pulsar-edit.dev/docs/launch-manual/sections/getting-started/#pulsar-basics) and [Using Pulsar: Pulsar Packages](https://pulsar-edit.dev/docs/launch-manual/sections/using-pulsar/#pulsar-packages) sections in the Pulsar Launch Manual.
+
+### Commands and Keybindings
+All of the following commands are under the `atom-workspace` selector.
+
+|Command|Description|Keybinding (Linux)|Keybinding (macOS)|Keybinding (Windows)|
+|-------|-----------|------------------|-----------------|--------------------|
+|`settings-view:open`|Opens the Settings View|<kbd>ctrl-,</kbd>|<kbd>cmd-,</kbd>|<kbd>ctrl-,</kbd>|
+|`settings-view:core`|Opens the _Core_ section of the Settings View|
+|`settings-view:editor`|Opens the _Editor_ section of the Settings View|
+|`settings-view:system`|Opens the _System_ section of the Settings View (Windows)|
+|`settings-view:show-keybindings`|Opens the _Keybindings_ section of the Settings View|
+|`settings-view:uninstall-packages`|Opens the _Packages_ section of the Settings View|
+|`settings-view:change-themes`|Opens the _Themes_ section of the Settings View|
+|`settings-view:uninstall-themes`|Opens the _Themes_ section of the Settings View|
+|`settings-view:check-for-updates`|Opens the _Updates_ section of the Settings View|
+|`settings-view:install-packages-and-themes`|Opens the _Install_ section of the Settings View|
+Custom keybindings can be added by referencing the above commands.  To learn more, visit the [Using Pulsar: Basic Customization](https://pulsar-edit.dev/docs/launch-manual/sections/using-pulsar/#basic-customization) or [Behind Pulsar: Keymaps In-Depth](https://pulsar-edit.dev/docs/launch-manual/sections/behind-pulsar/#keymaps-in-depth) sections in the Pulsar Launch Manual.
+
+## Customize
+The Settings View package uses the `ui-variables` to match a theme's color scheme. You can still customize the UI in your `styles.less` file. For example:
+
+```less
+// Change the color of the titles
+.settings-view .section .section-heading {
+  color: white;
+}
+
+// Change the font size of the setting descriptions
+.settings-view .setting-description {
+  font-size: 13px;
+}
+```
+
+Use the [developer tools](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#developer-tools) to find more selectors.
+
+## Contributing
+Always feel free to help out!  Whether it's [filing bugs and feature requests](https://github.com/pulsar-edit/pulsar/issues/new) or working on some of the [open issues](https://github.com/pulsar-edit/pulsar/issues), Pulsar's [contributing guide](https://github.com/pulsar-edit/.github/blob/main/CONTRIBUTING.md) will help get you started while the [guide for contributing to packages](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#contributing-to-official-pulsar-packages) has some extra information.
+
+## License
+MIT License.  See [the license](https://github.com/pulsar-edit/pulsar/blob/master/LICENSE.md) for more details.
diff --git a/packages/settings-view/keymaps/settings-view.cson b/packages/settings-view/keymaps/settings-view.cson
new file mode 100644
index 000000000..fd8612641
--- /dev/null
+++ b/packages/settings-view/keymaps/settings-view.cson
@@ -0,0 +1,5 @@
+'.platform-darwin':
+  'cmd-,': 'settings-view:open'
+
+'.platform-win32, .platform-linux':
+  'ctrl-,': 'settings-view:open'
diff --git a/packages/settings-view/lib/atom-io-client.coffee b/packages/settings-view/lib/atom-io-client.coffee
new file mode 100644
index 000000000..11bf5c8f8
--- /dev/null
+++ b/packages/settings-view/lib/atom-io-client.coffee
@@ -0,0 +1,236 @@
+fs = require 'fs-plus'
+path = require 'path'
+{remote} = require 'electron'
+
+glob = require 'glob'
+request = require 'request'
+
+module.exports =
+class AtomIoClient
+  constructor: (@packageManager, @baseURL) ->
+    @baseURL ?= 'https://api.pulsar-edit.dev/api/'
+    # 5 hour expiry
+    @expiry = 1000 * 60 * 60 * 5
+    @createAvatarCache()
+    @expireAvatarCache()
+
+  # Public: Get an avatar image from the filesystem, fetching it first if necessary
+  avatar: (login, callback) ->
+    @cachedAvatar login, (err, cached) =>
+      stale = Date.now() - parseInt(cached.split('-').pop()) > @expiry if cached
+      if cached and (not stale or not @online())
+        callback null, cached
+      else
+        @fetchAndCacheAvatar(login, callback)
+
+  # Public: get a package from the atom.io API, with the appropriate level of
+  # caching.
+  package: (name, callback) ->
+    packagePath = "packages/#{name}"
+    data = @fetchFromCache(packagePath)
+    if data
+      callback(null, data)
+    else
+      @request(packagePath, callback)
+
+  featuredPackages: (callback) ->
+    # TODO clean up caching copypasta
+    data = @fetchFromCache 'packages/featured'
+    if data
+      callback(null, data)
+    else
+      @getFeatured(false, callback)
+
+  featuredThemes: (callback) ->
+    # TODO clean up caching copypasta
+    data = @fetchFromCache 'themes/featured'
+    if data
+      callback(null, data)
+    else
+      @getFeatured(true, callback)
+
+  getFeatured: (loadThemes, callback) ->
+    # apm already does this, might as well use it instead of request i guess? The
+    # downside is that I need to repeat caching logic here.
+    @packageManager.getFeatured(loadThemes)
+      .then (packages) =>
+        # copypasta from below
+        key = if loadThemes then 'themes/featured' else 'packages/featured'
+        cached = @deepCache(key, packages)
+          # data: packages
+          # createdOn: Date.now()
+        # localStorage.setItem(@cacheKeyForPath(key), JSON.stringify(cached))
+        # end copypasta
+        callback(null, packages)
+      .catch (error) ->
+        callback(error, null)
+
+  request: (path, callback) ->
+    options = {
+      url: "#{@baseURL}#{path}"
+      headers: {'User-Agent': navigator.userAgent}
+      gzip: true
+    }
+
+    request options, (err, res, body) =>
+      return callback(err) if err
+
+      try
+        # NOTE: request's json option does not populate err if parsing fails,
+        # so we do it manually
+        body = @parseJSON(body)
+        delete body.versions
+
+        cached = @deepCache(path, body)
+        # cached =
+        #   data: body
+        #   createdOn: Date.now()
+        # localStorage.setItem(@cacheKeyForPath(path), JSON.stringify(cached))
+        callback(err, cached.data)
+      catch error
+        callback(error)
+
+  deepCache: (path, body) ->
+    cached =
+      data: body
+      createdOn: Date.now()
+    localStorage.setItem(@cacheKeyForPath(path), JSON.stringify(cached))
+    if(body instanceof Array)
+      body.forEach (child) => @deepCache("packages/#{child.name}", child)
+    cached
+
+  cacheKeyForPath: (path) ->
+    "settings-view:#{path}"
+
+  online: ->
+    navigator.onLine
+
+  # This could use a better name, since it checks whether it's appropriate to return
+  # the cached data and pretends it's null if it's stale and we're online
+  fetchFromCache: (packagePath) ->
+    cached = localStorage.getItem(@cacheKeyForPath(packagePath))
+    cached = if cached then @parseJSON(cached)
+    if cached? and (not @online() or Date.now() - cached.createdOn < @expiry)
+      return cached.data
+    else
+      # falsy data means "try to hit the network"
+      return null
+
+  createAvatarCache: ->
+    fs.makeTree(@getCachePath())
+
+  avatarPath: (login) ->
+    path.join @getCachePath(), "#{login}-#{Date.now()}"
+
+  cachedAvatar: (login, callback) ->
+    glob @avatarGlob(login), (err, files) =>
+      return callback(err) if err
+      files.sort().reverse()
+      for imagePath in files
+        filename = path.basename(imagePath)
+        [..., createdOn] = filename.split('-')
+        if Date.now() - parseInt(createdOn) < @expiry
+          return callback(null, imagePath)
+      callback(null, null)
+
+  avatarGlob: (login) ->
+    path.join @getCachePath(), "#{login}-*([0-9])"
+
+  fetchAndCacheAvatar: (login, callback) ->
+    if not @online()
+      callback(null, null)
+    else
+      imagePath = @avatarPath login
+      requestObject = {
+        url: "https://avatars.githubusercontent.com/#{login}"
+        headers: {'User-Agent': navigator.userAgent}
+      }
+      request.head requestObject, (error, response, body) ->
+        if error? or response.statusCode isnt 200 or not response.headers['content-type'].startsWith('image/')
+          callback(error)
+        else
+          writeStream = fs.createWriteStream imagePath
+          writeStream.on 'finish', -> callback(null, imagePath)
+          writeStream.on 'error', (error) ->
+            writeStream.close()
+            try
+              fs.unlinkSync imagePath if fs.existsSync imagePath
+            callback(error)
+          request(requestObject).pipe(writeStream)
+
+  # The cache expiry doesn't need to be clever, or even compare dates, it just
+  # needs to always keep around the newest item, and that item only. The localStorage
+  # cache updates in place, so it doesn't need to be purged.
+
+  expireAvatarCache: ->
+    deleteAvatar = (child) =>
+      avatarPath = path.join(@getCachePath(), child)
+      fs.unlink avatarPath, (error) ->
+        if error and error.code isnt 'ENOENT' # Ignore cache paths that don't exist
+          console.warn("Error deleting avatar (#{error.code}): #{avatarPath}")
+
+    fs.readdir @getCachePath(), (error, _files) ->
+      _files ?= []
+      files = {}
+      for filename in _files
+        parts = filename.split('-')
+        stamp = parts.pop()
+        key = parts.join('-')
+        files[key] ?= []
+        files[key].push "#{key}-#{stamp}"
+
+      for key, children of files
+        children.sort()
+        children.pop() # keep
+        # Right now a bunch of clients might be instantiated at once, so
+        # we can just ignore attempts to unlink files that have already been removed
+        # - this should be fixed with a singleton client
+        children.forEach(deleteAvatar)
+
+  getCachePath: ->
+    @cachePath ?= path.join(remote.app.getPath('userData'), 'Cache', 'settings-view')
+
+  search: (query, options) ->
+    qs = {q: query}
+
+    if options.themes
+      qs.filter = 'theme'
+    else if options.packages
+      qs.filter = 'package'
+
+    options = {
+      url: "#{@baseURL}packages/search"
+      headers: {'User-Agent': navigator.userAgent}
+      qs: qs
+      gzip: true
+    }
+
+    new Promise (resolve, reject) =>
+      request options, (err, res, textBody) =>
+        if err
+          error = new Error("Searching for \u201C#{query}\u201D failed.")
+          error.stderr = err.message
+          reject(error)
+        else
+          try
+            # NOTE: request's json option does not populate err if parsing fails,
+            # so we do it manually
+            body = @parseJSON(textBody)
+            if body.filter
+              resolve(
+                body.filter (pkg) -> pkg.releases?.latest?
+                    .map ({readme, metadata, downloads, stargazers_count, repository}) ->
+                      Object.assign metadata, {readme, downloads, stargazers_count, repository: repository.url}
+              )
+            else
+            error = new Error("Searching for \u201C#{query}\u201D failed.\n")
+            error.stderr = "API returned: " + textBody
+            reject error
+
+          catch e
+            error = new Error("Searching for \u201C#{query}\u201D failed.")
+            error.stderr = e.message + '\n' + textBody
+            reject error
+
+  parseJSON: (s) ->
+    JSON.parse(s)
diff --git a/packages/settings-view/lib/collapsible-section-panel.js b/packages/settings-view/lib/collapsible-section-panel.js
new file mode 100644
index 000000000..630767610
--- /dev/null
+++ b/packages/settings-view/lib/collapsible-section-panel.js
@@ -0,0 +1,53 @@
+/** @babel */
+
+import {Disposable} from 'atom'
+
+export default class CollapsibleSectionPanel {
+  notHiddenCardsLength (sectionElement) {
+    return sectionElement.querySelectorAll('.package-card:not(.hidden)').length
+  }
+
+  updateSectionCount (headerElement, countElement, packageCount, totalCount) {
+    if (totalCount != null) {
+      countElement.textContent = `${packageCount}/${totalCount}`
+    } else {
+      countElement.textContent = packageCount
+    }
+
+    if (packageCount > 0) {
+      headerElement.classList.add('has-items')
+    }
+  }
+
+  updateSectionCounts () {
+    this.resetSectionHasItems()
+
+    const filterText = this.refs.filterEditor.getText()
+    if (filterText === '') {
+      this.updateUnfilteredSectionCounts()
+    } else {
+      this.updateFilteredSectionCounts()
+    }
+  }
+
+  handleEvents () {
+    const handler = (e) => {
+      const target = e.target.closest('.sub-section .has-items')
+      if (target) {
+        target.parentNode.classList.toggle('collapsed')
+      }
+    }
+    this.element.addEventListener('click', handler)
+    return new Disposable(() => this.element.removeEventListener('click', handler))
+  }
+
+  resetCollapsibleSections (headerSections) {
+    for (const headerSection of headerSections) {
+      this.resetCollapsibleSection(headerSection)
+    }
+  }
+
+  resetCollapsibleSection (headerSection) {
+    headerSection.classList.remove('has-items')
+  }
+}
diff --git a/packages/settings-view/lib/editor-panel.js b/packages/settings-view/lib/editor-panel.js
new file mode 100644
index 000000000..ba69084e6
--- /dev/null
+++ b/packages/settings-view/lib/editor-panel.js
@@ -0,0 +1,78 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import {CompositeDisposable} from 'atom'
+import etch from 'etch'
+import SettingsPanel from './settings-panel'
+
+export default class EditorPanel {
+  constructor () {
+    etch.initialize(this)
+    this.subscriptions = new CompositeDisposable()
+    this.subscriptions.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+  }
+
+  destroy () {
+    this.subscriptions.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  render () {
+    return (
+      <div tabIndex='0' className='panels-item' onclick={this.didClick}>
+        <SettingsPanel
+          namespace='editor'
+          icon='code'
+          note={`<div class="text icon icon-question" id="editor-settings-note" tabindex="-1">These settings are related to text editing. Some of these can be overriden on a per-language basis. Check language settings by clicking its package card in the <a class="link packages-open">Packages list</a>.</div>`} />
+      </div>
+    )
+  }
+
+  focus () {
+    this.element.focus()
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  didClick (event) {
+    const target = event.target.closest('.packages-open')
+    if (target) {
+      atom.workspace.open('atom://config/packages')
+    }
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
diff --git a/packages/settings-view/lib/error-view.js b/packages/settings-view/lib/error-view.js
new file mode 100644
index 000000000..3a7f1248e
--- /dev/null
+++ b/packages/settings-view/lib/error-view.js
@@ -0,0 +1,80 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import etch from 'etch'
+
+export default class ErrorView {
+  constructor (packageManager, {message, stderr, packageInstallError}) {
+    etch.initialize(this)
+
+    this.isOutputHidden = true
+    this.refs.detailsArea.style.display = 'none'
+    this.refs.details.textContent = stderr
+    this.refs.message.textContent = message
+
+    // Check for native build tools and show warning if missing.
+    if (packageInstallError && process.platform === 'win32') {
+      packageManager.checkNativeBuildTools().catch(() => {
+        this.refs.alert.appendChild(new CompileToolsErrorView().element)
+      })
+    }
+  }
+
+  update () {}
+
+  destroy () {
+    return etch.destroy(this)
+  }
+
+  render () {
+    return (
+      <div className='error-message'>
+        <div ref='alert' className='alert alert-danger alert-dismissable native-key-bindings' tabIndex='-1'>
+          <button ref='close' className='close icon icon-x' onclick={() => this.destroy()} />
+          <span ref='message' className='native-key-bindings' />
+          <a ref='detailsLink' className='alert-link error-link' onclick={() => this.toggleOutput()}>{'Show output\u2026'}</a>
+          <div ref='detailsArea' className='padded'>
+            <pre ref='details' className='error-details text' />
+          </div>
+        </div>
+      </div>
+    )
+  }
+
+  toggleOutput () {
+    if (this.isOutputHidden) {
+      this.isOutputHidden = false
+      this.refs.detailsArea.style.display = ''
+      this.refs.detailsLink.textContent = 'Hide output\u2026'
+    } else {
+      this.isOutputHidden = true
+      this.refs.detailsArea.style.display = 'none'
+      this.refs.detailsLink.textContent = 'Show output\u2026'
+    }
+  }
+}
+
+class CompileToolsErrorView {
+  constructor () {
+    etch.initialize(this)
+  }
+
+  update () {}
+
+  render () {
+    return (
+      <div>
+        <div className='icon icon-alert compile-tools-heading compile-tools-message'>Compiler tools not found</div>
+        <div className='compile-tools-message'>Packages that depend on modules that contain C/C++ code will fail to install.</div>
+        <div className='compile-tools-message'>
+          <span>Please install Python and Visual Studio to continue.</span>
+        </div>
+        <div className='compile-tools-message'>
+          <span>Run </span>
+          <code className='alert-danger'>pulsar -p install --check</code>
+          <span> after installing to test compiling a native module.</span>
+        </div>
+      </div>
+    )
+  }
+}
diff --git a/packages/settings-view/lib/general-panel.js b/packages/settings-view/lib/general-panel.js
new file mode 100644
index 000000000..29702d806
--- /dev/null
+++ b/packages/settings-view/lib/general-panel.js
@@ -0,0 +1,79 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import {CompositeDisposable} from 'atom'
+import etch from 'etch'
+import SettingsPanel from './settings-panel'
+
+export default class GeneralPanel {
+  constructor () {
+    etch.initialize(this)
+    this.subscriptions = new CompositeDisposable()
+    this.subscriptions.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+  }
+
+  destroy () {
+    this.subscriptions.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  render () {
+    return (
+      <div tabIndex='0' className='panels-item' onclick={this.didClick}>
+        <SettingsPanel
+          ref='panel'
+          namespace='core'
+          icon='settings'
+          note={`<div class="text icon icon-question" id="core-settings-note" tabindex="-1">These are Pulsar's core settings which affect behavior unrelated to text editing. Individual packages may have their own additional settings found within their package card in the <a class="link packages-open">Packages list</a>.</div>`} />
+      </div>
+    )
+  }
+
+  focus () {
+    this.element.focus()
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  didClick (event) {
+    const target = event.target.closest('.packages-open')
+    if (target) {
+      atom.workspace.open('atom://config/packages')
+    }
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
diff --git a/packages/settings-view/lib/install-panel.js b/packages/settings-view/lib/install-panel.js
new file mode 100644
index 000000000..0d1a53081
--- /dev/null
+++ b/packages/settings-view/lib/install-panel.js
@@ -0,0 +1,348 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import path from 'path'
+import electron from 'electron'
+import etch from 'etch'
+import hostedGitInfo from 'hosted-git-info'
+
+import {CompositeDisposable, TextEditor} from 'atom'
+
+import PackageCard from './package-card'
+import ErrorView from './error-view'
+
+const PackageNameRegex = /config\/install\/(package|theme):([a-z0-9-_]+)/i
+
+export default class InstallPanel {
+  constructor (settingsView, packageManager) {
+    this.settingsView = settingsView
+    this.packageManager = packageManager
+    this.disposables = new CompositeDisposable()
+    this.client = this.packageManager.getClient()
+    this.atomIoURL = 'https://web.pulsar-edit.dev/'
+
+    etch.initialize(this)
+
+    this.refs.searchMessage.style.display = 'none'
+
+    this.refs.searchEditor.setPlaceholderText('Search packages')
+    this.searchType = 'packages'
+    this.disposables.add(
+      this.packageManager.on('package-install-failed', ({pack, error}) => {
+        this.refs.searchErrors.appendChild(new ErrorView(this.packageManager, error).element)
+      })
+    )
+    this.disposables.add(
+      this.packageManager.on('package-installed theme-installed', ({pack}) => {
+        const gitUrlInfo =
+          (this.currentGitPackageCard && this.currentGitPackageCard.pack && this.currentGitPackageCard.pack.gitUrlInfo)
+          ? this.currentGitPackageCard.pack.gitUrlInfo
+          : null
+
+        if (gitUrlInfo && gitUrlInfo === pack.gitUrlInfo) {
+          this.updateGitPackageCard(pack)
+        }
+      })
+    )
+    const searchBuffer = this.refs.searchEditor.getBuffer();
+    searchBuffer.debouncedEmitDidStopChangingEvent = (timer => () => {
+      clearTimeout(timer);
+      timer = setTimeout(searchBuffer.emitDidStopChangingEvent.bind(searchBuffer), 700);
+    })();
+    // TODO remove hack to extend stop changing delay
+    this.disposables.add(
+      this.refs.searchEditor.onDidStopChanging(() => {
+        this.performSearch()
+      })
+    )
+    this.disposables.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+
+    this.loadFeaturedPackages()
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  focus () {
+    this.refs.searchEditor.element.focus()
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  render () {
+    return (
+      <div className='panels-item' tabIndex='-1'>
+        <div className='section packages'>
+          <div className='section-container'>
+            <h1 ref='installHeading' className='section-heading icon icon-plus'>Install Packages</h1>
+
+            <div className='text native-key-bindings' tabIndex='-1'>
+              <span className='icon icon-question' />
+              <span ref='publishedToText'>Packages are published to </span>
+              <a className='link' onclick={this.didClickOpenAtomIo.bind(this)}>web.pulsar-edit.dev</a>
+              <span> and are installed to {path.join(process.env.ATOM_HOME, 'packages')}</span>
+            </div>
+
+            <div className='search-container clearfix'>
+              <div className='editor-container'>
+                <TextEditor mini ref='searchEditor' />
+              </div>
+              <div className='btn-group'>
+                <button ref='searchPackagesButton' className='btn btn-default selected' onclick={this.didClickSearchPackagesButton.bind(this)}>Packages</button>
+                <button ref='searchThemesButton' className='btn btn-default' onclick={this.didClickSearchThemesButton.bind(this)}>Themes</button>
+              </div>
+            </div>
+
+            <div ref='searchErrors' />
+            <div ref='searchMessage' className='alert alert-info search-message icon icon-search' />
+            <div ref='resultsContainer' className='container package-container' />
+          </div>
+        </div>
+
+        <div className='section packages'>
+          <div className='section-container'>
+            <div ref='featuredHeading' className='section-heading icon icon-star' />
+            <div ref='featuredErrors' />
+            <div ref='loadingMessage' className='alert alert-info icon icon-hourglass' />
+            <div ref='featuredContainer' className='container package-container' />
+          </div>
+        </div>
+      </div>
+    )
+  }
+
+  setSearchType (searchType) {
+    if (searchType === 'theme') {
+      this.searchType = 'themes'
+      this.refs.searchThemesButton.classList.add('selected')
+      this.refs.searchPackagesButton.classList.remove('selected')
+      this.refs.searchEditor.setPlaceholderText('Search themes')
+      this.refs.publishedToText.textContent = 'Themes are published to '
+      this.atomIoURL = 'https://pulsar-edit.dev/themes'
+      this.loadFeaturedPackages(true)
+    } else if (searchType === 'package') {
+      this.searchType = 'packages'
+      this.refs.searchPackagesButton.classList.add('selected')
+      this.refs.searchThemesButton.classList.remove('selected')
+      this.refs.searchEditor.setPlaceholderText('Search packages')
+      this.refs.publishedToText.textContent = 'Packages are published to '
+      this.atomIoURL = 'https://web.pulsar-edit.dev/packages'
+      this.loadFeaturedPackages()
+    }
+  }
+
+  beforeShow (options) {
+    if (options && options.uri) {
+      const query = this.extractQueryFromURI(options.uri)
+      if (query != null) {
+        const {searchType, packageName} = query
+        this.setSearchType(searchType)
+        this.refs.searchEditor.setText(packageName)
+        this.performSearch()
+      }
+    }
+  }
+
+  extractQueryFromURI (uri) {
+    const matches = PackageNameRegex.exec(uri)
+    if (matches) {
+      const [, searchType, packageName] = Array.from(matches)
+      return {searchType, packageName}
+    } else {
+      return null
+    }
+  }
+
+  performSearch () {
+    const query = this.refs.searchEditor.getText().trim().toLowerCase()
+    if (query) {
+      this.performSearchForQuery(query)
+    }
+  }
+
+  performSearchForQuery (query) {
+    const gitUrlInfo = hostedGitInfo.fromUrl(query)
+    if (gitUrlInfo) {
+      const type = gitUrlInfo.default
+      if (type === 'sshurl' || type === 'https' || type === 'shortcut') {
+        this.showGitInstallPackageCard({name: query, gitUrlInfo})
+      }
+    } else {
+      this.search(query)
+    }
+  }
+
+  showGitInstallPackageCard (pack) {
+    if (this.currentGitPackageCard) {
+      this.currentGitPackageCard.destroy()
+    }
+
+    this.currentGitPackageCard = this.getPackageCardView(pack)
+    this.currentGitPackageCard.displayGitPackageInstallInformation()
+    this.replaceCurrentGitPackageCardView()
+  }
+
+  updateGitPackageCard (pack) {
+    if (this.currentGitPackageCard) {
+      this.currentGitPackageCard.destroy()
+    }
+
+    this.currentGitPackageCard = this.getPackageCardView(pack)
+    this.replaceCurrentGitPackageCardView()
+  }
+
+  replaceCurrentGitPackageCardView () {
+    this.refs.resultsContainer.innerHTML = ''
+    this.addPackageCardView(this.refs.resultsContainer, this.currentGitPackageCard)
+  }
+
+  async search (query) {
+    this.refs.resultsContainer.innerHTML = ''
+    this.refs.searchMessage.textContent = `Searching ${this.searchType} for \u201C${query}\u201D\u2026`
+    this.refs.searchMessage.style.display = ''
+
+    const options = {}
+    options[this.searchType] = true
+
+    try {
+      const packages = (await this.client.search(query, options)) || []
+      this.refs.resultsContainer.innerHTML = ''
+      this.refs.searchMessage.style.display = 'none'
+      if (packages.length === 0) {
+        this.refs.searchMessage.textContent = `No ${this.searchType.replace(/s$/, '')} results for \u201C${query}\u201D`
+        this.refs.searchMessage.style.display = ''
+      }
+
+      this.addPackageViews(this.refs.resultsContainer, packages)
+    } catch (error) {
+      this.refs.searchMessage.style.display = 'none'
+      this.refs.searchErrors.appendChild(new ErrorView(this.packageManager, error).element)
+    }
+  }
+
+  addPackageViews (container, packages) {
+    for (const pack of packages) {
+      this.addPackageCardView(container, this.getPackageCardView(pack))
+    }
+  }
+
+  addPackageCardView (container, packageCard) {
+    const packageRow = document.createElement('div')
+    packageRow.classList.add('row')
+    packageRow.appendChild(packageCard.element)
+    container.appendChild(packageRow)
+  }
+
+  getPackageCardView (pack) {
+    return new PackageCard(pack, this.settingsView, this.packageManager, {back: 'Install'})
+  }
+
+  filterPackages (packages, themes) {
+    return packages.filter(({theme}) => themes ? theme : !theme)
+  }
+
+  // Load and display the featured packages that are available to install.
+  loadFeaturedPackages (loadThemes) {
+    if (loadThemes == null) {
+      loadThemes = false
+    }
+    this.refs.featuredContainer.innerHTML = ''
+
+    if (loadThemes) {
+      this.refs.installHeading.textContent = 'Install Themes'
+      this.refs.featuredHeading.textContent = 'Featured Themes'
+      this.refs.loadingMessage.textContent = 'Loading featured themes\u2026'
+    } else {
+      this.refs.installHeading.textContent = 'Install Packages'
+      this.refs.featuredHeading.textContent = 'Featured Packages'
+      this.refs.loadingMessage.textContent = 'Loading featured packages\u2026'
+    }
+
+    this.refs.loadingMessage.style.display = ''
+
+    const handle = error => {
+      this.refs.loadingMessage.style.display = 'none'
+      this.refs.featuredErrors.appendChild(new ErrorView(this.packageManager, error).element)
+    }
+
+    if (loadThemes) {
+      this.client.featuredThemes((error, themes) => {
+        if (error) {
+          handle(error)
+        } else {
+          this.refs.loadingMessage.style.display = 'none'
+          this.refs.featuredHeading.textContent = 'Featured Themes'
+          this.addPackageViews(this.refs.featuredContainer, themes)
+        }
+      })
+    } else {
+      this.client.featuredPackages((error, packages) => {
+        if (error) {
+          handle(error)
+        } else {
+          this.refs.loadingMessage.style.display = 'none'
+          this.refs.featuredHeading.textContent = 'Featured Packages'
+          this.addPackageViews(this.refs.featuredContainer, packages)
+        }
+      })
+    }
+  }
+
+  didClickOpenAtomIo (event) {
+    event.preventDefault()
+    electron.shell.openExternal(this.atomIoURL)
+  }
+
+  didClickSearchPackagesButton () {
+    if (!this.refs.searchPackagesButton.classList.contains('selected')) {
+      this.setSearchType('package')
+    }
+
+    this.performSearch()
+  }
+
+  didClickSearchThemesButton () {
+    if (!this.refs.searchThemesButton.classList.contains('selected')) {
+      this.setSearchType('theme')
+    }
+
+    this.performSearch()
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
diff --git a/packages/settings-view/lib/installed-packages-panel.js b/packages/settings-view/lib/installed-packages-panel.js
new file mode 100644
index 000000000..db175fa9a
--- /dev/null
+++ b/packages/settings-view/lib/installed-packages-panel.js
@@ -0,0 +1,321 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import {CompositeDisposable, TextEditor} from 'atom'
+import etch from 'etch'
+import fuzzaldrin from 'fuzzaldrin'
+
+import CollapsibleSectionPanel from './collapsible-section-panel'
+import PackageCard from './package-card'
+import ErrorView from './error-view'
+
+import List from './list'
+import ListView from './list-view'
+import {ownerFromRepository, packageComparatorAscending} from './utils'
+
+export default class InstalledPackagesPanel extends CollapsibleSectionPanel {
+  static loadPackagesDelay () {
+    return 300
+  }
+
+  constructor (settingsView, packageManager) {
+    super()
+    etch.initialize(this)
+    this.settingsView = settingsView
+    this.packageManager = packageManager
+    this.items = {
+      dev: new List('name'),
+      core: new List('name'),
+      user: new List('name'),
+      git: new List('name')
+    }
+    this.itemViews = {
+      dev: new ListView(this.items.dev, this.refs.devPackages, this.createPackageCard.bind(this)),
+      core: new ListView(this.items.core, this.refs.corePackages, this.createPackageCard.bind(this)),
+      user: new ListView(this.items.user, this.refs.communityPackages, this.createPackageCard.bind(this)),
+      git: new ListView(this.items.git, this.refs.gitPackages, this.createPackageCard.bind(this))
+    }
+
+    this.subscriptions = new CompositeDisposable()
+    this.subscriptions.add(
+      this.refs.filterEditor.onDidStopChanging(() => { this.matchPackages() })
+    )
+    this.subscriptions.add(
+      this.packageManager.on('package-install-failed theme-install-failed package-uninstall-failed theme-uninstall-failed package-update-failed theme-update-failed', ({pack, error}) => {
+        this.refs.updateErrors.appendChild(new ErrorView(this.packageManager, error).element)
+      })
+    )
+
+    let loadPackagesTimeout
+    this.subscriptions.add(
+      this.packageManager.on('package-updated package-installed package-uninstalled', () => {
+        clearTimeout(loadPackagesTimeout)
+        loadPackagesTimeout = setTimeout(this.loadPackages.bind(this), InstalledPackagesPanel.loadPackagesDelay())
+      })
+    )
+
+    this.subscriptions.add(this.handleEvents())
+    this.subscriptions.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+
+    this.loadPackages()
+  }
+
+  focus () {
+    this.refs.filterEditor.element.focus()
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  destroy () {
+    this.subscriptions.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  render () {
+    return (
+      <div className='panels-item' tabIndex='-1'>
+        <section className='section'>
+          <div className='section-container'>
+            <div className='section-heading icon icon-package'>
+              Installed Packages
+              <span ref='totalPackages' className='section-heading-count badge badge-flexible'>…</span>
+            </div>
+            <div className='editor-container'>
+              <TextEditor ref='filterEditor' mini placeholderText='Filter packages by name' />
+            </div>
+
+            <div ref='updateErrors' />
+
+            <section className='sub-section installed-packages'>
+              <h3 ref='communityPackagesHeader' className='sub-section-heading icon icon-package'>
+                Community Packages
+                <span ref='communityCount' className='section-heading-count badge badge-flexible'>…</span>
+              </h3>
+              <div ref='communityPackages' className='container package-container'>
+                <div ref='communityLoadingArea' className='alert alert-info loading-area icon icon-hourglass'>Loading packages…</div>
+              </div>
+            </section>
+
+            <section className='sub-section core-packages'>
+              <h3 ref='corePackagesHeader' className='sub-section-heading icon icon-package'>
+                Core Packages
+                <span ref='coreCount' className='section-heading-count badge badge-flexible'>…</span>
+              </h3>
+              <div ref='corePackages' className='container package-container'>
+                <div ref='coreLoadingArea' className='alert alert-info loading-area icon icon-hourglass'>Loading packages…</div>
+              </div>
+            </section>
+
+            <section className='sub-section dev-packages'>
+              <h3 ref='devPackagesHeader' className='sub-section-heading icon icon-package'>
+                Development Packages
+                <span ref='devCount' className='section-heading-count badge badge-flexible'>…</span>
+              </h3>
+              <div ref='devPackages' className='container package-container'>
+                <div ref='devLoadingArea' className='alert alert-info loading-area icon icon-hourglass'>Loading packages…</div>
+              </div>
+            </section>
+
+            <section className='sub-section git-packages'>
+              <h3 ref='gitPackagesHeader' className='sub-section-heading icon icon-package'>
+                Git Packages
+                <span ref='gitCount' className='section-heading-count badge badge-flexible'>…</span>
+              </h3>
+              <div ref='gitPackages' className='container package-container'>
+                <div ref='gitLoadingArea' className='alert alert-info loading-area icon icon-hourglass'>Loading packages…</div>
+              </div>
+            </section>
+          </div>
+        </section>
+      </div>
+    )
+  }
+
+  filterPackages (packages) {
+    packages.dev = packages.dev.filter(({theme}) => !theme)
+    packages.user = packages.user.filter(({theme}) => !theme)
+    packages.core = packages.core.filter(({theme}) => !theme)
+    packages.git = (packages.git || []).filter(({theme}) => !theme)
+
+    for (let pack of packages.core) {
+      if (pack.repository == null) {
+        pack.repository = `https://github.com/pulsar-edit/${pack.name}`
+      }
+    }
+
+    for (let packageType of ['dev', 'core', 'user', 'git']) {
+      for (let pack of packages[packageType]) {
+        pack.owner = ownerFromRepository(pack.repository)
+      }
+    }
+
+    return packages
+  }
+
+  sortPackages (packages) {
+    packages.dev.sort(packageComparatorAscending)
+    packages.core.sort(packageComparatorAscending)
+    packages.user.sort(packageComparatorAscending)
+    packages.git.sort(packageComparatorAscending)
+    return packages
+  }
+
+  loadPackages () {
+    const packagesWithUpdates = {}
+    this.packageManager.getOutdated().then((packages) => {
+      for (let {name, latestVersion} of packages) {
+        packagesWithUpdates[name] = latestVersion
+      }
+      this.displayPackageUpdates(packagesWithUpdates)
+    })
+
+    this.packageManager.getInstalled().then((packages) => {
+      this.packages = this.sortPackages(this.filterPackages(packages))
+      this.refs.devLoadingArea.remove()
+      this.items.dev.setItems(this.packages.dev)
+
+      this.refs.coreLoadingArea.remove()
+      this.items.core.setItems(this.packages.core)
+
+      this.refs.communityLoadingArea.remove()
+      this.items.user.setItems(this.packages.user)
+
+      this.refs.gitLoadingArea.remove()
+      this.items.git.setItems(this.packages.git)
+
+      // TODO show empty mesage per section
+
+      this.updateSectionCounts()
+      this.displayPackageUpdates(packagesWithUpdates)
+
+      this.matchPackages()
+    }).catch((error) => {
+      console.error(error.message, error.stack)
+    })
+  }
+
+  displayPackageUpdates (packagesWithUpdates) {
+    for (const packageType of ['dev', 'core', 'user', 'git']) {
+      for (const packageCard of this.itemViews[packageType].getViews()) {
+        const newVersion = packagesWithUpdates[packageCard.pack.name]
+        if (newVersion) {
+          packageCard.displayAvailableUpdate(newVersion)
+        }
+      }
+    }
+  }
+
+  createPackageCard (pack) {
+    return new PackageCard(pack, this.settingsView, this.packageManager, {back: 'Packages'})
+  }
+
+  filterPackageListByText (text) {
+    if (!this.packages) {
+      return
+    }
+
+    for (let packageType of ['dev', 'core', 'user', 'git']) {
+      const allViews = this.itemViews[packageType].getViews()
+      const activeViews = this.itemViews[packageType].filterViews((pack) => {
+        if (text === '') {
+          return true
+        } else {
+          const owner = pack.owner != null ? pack.owner : ownerFromRepository(pack.repository)
+          const filterText = `${pack.name} ${owner}`
+          return fuzzaldrin.score(filterText, text) > 0
+        }
+      })
+
+      for (const view of allViews) {
+        if (view) {
+          view.element.style.display = 'none'
+          view.element.classList.add('hidden')
+        }
+      }
+
+      for (const view of activeViews) {
+        if (view) {
+          view.element.style.display = ''
+          view.element.classList.remove('hidden')
+        }
+      }
+    }
+
+    this.updateSectionCounts()
+  }
+
+  updateUnfilteredSectionCounts () {
+    this.updateSectionCount(this.refs.communityPackagesHeader, this.refs.communityCount, this.packages.user.length)
+    this.updateSectionCount(this.refs.corePackagesHeader, this.refs.coreCount, this.packages.core.length)
+    this.updateSectionCount(this.refs.devPackagesHeader, this.refs.devCount, this.packages.dev.length)
+    this.updateSectionCount(this.refs.gitPackagesHeader, this.refs.gitCount, this.packages.git.length)
+
+    const totalPackages =
+      this.packages.user.length +
+      this.packages.core.length +
+      this.packages.dev.length +
+      this.packages.git.length
+    this.refs.totalPackages.textContent = totalPackages.toString()
+  }
+
+  updateFilteredSectionCounts () {
+    const community = this.notHiddenCardsLength(this.refs.communityPackages)
+    this.updateSectionCount(this.refs.communityPackagesHeader, this.refs.communityCount, community, this.packages.user.length)
+
+    const core = this.notHiddenCardsLength(this.refs.corePackages)
+    this.updateSectionCount(this.refs.corePackagesHeader, this.refs.coreCount, core, this.packages.core.length)
+
+    const dev = this.notHiddenCardsLength(this.refs.devPackages)
+    this.updateSectionCount(this.refs.devPackagesHeader, this.refs.devCount, dev, this.packages.dev.length)
+
+    const git = this.notHiddenCardsLength(this.refs.gitPackages)
+    this.updateSectionCount(this.refs.gitPackagesHeader, this.refs.gitCount, git, this.packages.git.length)
+
+    const shownPackages = dev + core + community + git
+    const totalPackages = this.packages.user.length + this.packages.core.length + this.packages.dev.length + this.packages.git.length
+    this.refs.totalPackages.textContent = `${shownPackages}/${totalPackages}`
+  }
+
+  resetSectionHasItems () {
+    this.resetCollapsibleSections([this.refs.communityPackagesHeader, this.refs.corePackagesHeader, this.refs.devPackagesHeader, this.refs.gitPackagesHeader])
+  }
+
+  matchPackages () {
+    this.filterPackageListByText(this.refs.filterEditor.getText())
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
diff --git a/packages/settings-view/lib/keybindings-panel.js b/packages/settings-view/lib/keybindings-panel.js
new file mode 100644
index 000000000..f1414e9c9
--- /dev/null
+++ b/packages/settings-view/lib/keybindings-panel.js
@@ -0,0 +1,249 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import {CompositeDisposable, TextEditor} from 'atom'
+import etch from 'etch'
+import _ from 'underscore-plus'
+import path from 'path'
+
+export default class KeybindingsPanel {
+  constructor () {
+    etch.initialize(this)
+    this.disposables = new CompositeDisposable()
+    this.disposables.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+    this.otherPlatformPattern = new RegExp(`\\.platform-(?!${_.escapeRegExp(process.platform)}\\b)`)
+    this.platformPattern = new RegExp(`\\.platform-${_.escapeRegExp(process.platform)}\\b`)
+
+    this.disposables.add(this.refs.searchEditor.onDidStopChanging(() => {
+      this.filterKeyBindings(this.keyBindings, this.refs.searchEditor.getText())
+    }))
+
+    this.disposables.add(atom.keymaps.onDidReloadKeymap(() => { this.loadKeyBindings() }))
+    this.disposables.add(atom.keymaps.onDidUnloadKeymap(() => { this.loadKeyBindings() }))
+    this.loadKeyBindings()
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  render () {
+    return (
+      <div className='panels-item' tabIndex='-1'>
+        <section className='keybinding-panel section'>
+          <div className='section-heading icon icon-keyboard'>Keybindings</div>
+          <div className='text native-key-bindings' tabIndex='-1'>
+            <span className='icon icon-question' />
+            <span>You can override these keybindings by copying </span>
+            <span className='icon icon-clippy' />
+            <span>and pasting them into </span>
+            <a className='link' onclick={this.didClickOpenKeymapFile}>your keymap file</a>
+          </div>
+
+          <div className='editor-container'>
+            <TextEditor mini ref='searchEditor' placeholderText='Search keybindings' />
+          </div>
+
+          <table className='native-key-bindings table text' tabIndex='-1'>
+            <col className='keystroke' />
+            <col className='command' />
+            <col className='source' />
+            <col className='selector' />
+            <thead>
+              <tr>
+                <th className='keystroke'>Keystroke</th>
+                <th className='command'>Command</th>
+                <th className='source'>Source</th>
+                <th className='selector'>Selector</th>
+              </tr>
+            </thead>
+            <tbody ref='keybindingRows' />
+          </table>
+        </section>
+      </div>
+    )
+  }
+
+  loadKeyBindings () {
+    this.refs.keybindingRows.innerHTML = ''
+    this.keyBindings = _.sortBy(atom.keymaps.getKeyBindings(), 'keystrokes')
+    this.appendKeyBindings(this.keyBindings)
+    this.filterKeyBindings(this.keyBindings, this.refs.searchEditor.getText())
+  }
+
+  focus () {
+    this.refs.searchEditor.element.focus()
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  filterKeyBindings (keyBindings, filterString) {
+    this.refs.keybindingRows.innerHTML = ''
+    for (let keyBinding of keyBindings) {
+      let {selector, keystrokes, command, source} = keyBinding
+      source = KeybindingsPanel.determineSource(source)
+      var searchString = `${selector}${keystrokes}${command}${source}`.toLowerCase()
+      if (!searchString) {
+        continue
+      }
+
+      const keywords = filterString.trim().toLowerCase().split(' ')
+      if (keywords.every(keyword => searchString.indexOf(keyword) !== -1)) {
+        this.appendKeyBinding(keyBinding)
+      }
+    }
+  }
+
+  appendKeyBindings (keyBindings) {
+    for (const keyBinding of keyBindings) {
+      this.appendKeyBinding(keyBinding)
+    }
+  }
+
+  appendKeyBinding (keyBinding) {
+    if (!this.showSelector(keyBinding.selector)) {
+      return
+    }
+
+    const element = this.elementForKeyBinding(keyBinding)
+    element.dataset.keyBinding = keyBinding
+    this.refs.keybindingRows.appendChild(element)
+  }
+
+  showSelector (selector) {
+    let segments
+    if (selector) {
+      segments = selector.split(',') || []
+    } else {
+      segments = []
+    }
+
+    return segments.some((s) => this.platformPattern.test(s) || !this.otherPlatformPattern.test(s))
+  }
+
+  elementForKeyBinding (keyBinding) {
+    let {selector, keystrokes, command, source} = keyBinding
+    source = KeybindingsPanel.determineSource(source)
+
+    const tr = document.createElement('tr')
+    if (source === 'User') {
+      tr.classList.add('is-user')
+    }
+
+    const keystrokeTd = document.createElement('td')
+    keystrokeTd.classList.add('keystroke')
+
+    const copyIcon = document.createElement('span')
+    copyIcon.classList.add('icon', 'icon-clippy', 'copy-icon')
+    copyIcon.onclick = () => {
+      let content
+      const keymapExtension = path.extname(atom.keymaps.getUserKeymapPath())
+
+      const escapeCSON = (input) => {
+        return JSON.stringify(input)
+          .slice(1, -1) // Remove wrapping double quotes
+          .replace(/\\"/g, '"') // Unescape double quotes
+          .replace(/'/g, '\\\'') // Escape single quotes
+      }
+
+      if (keymapExtension === '.cson') {
+        content = `'${escapeCSON(selector)}':\n  '${escapeCSON(keystrokes)}': '${escapeCSON(command)}'`
+      } else {
+        content = `${JSON.stringify(selector)}: {\n  ${JSON.stringify(keystrokes)}: ${JSON.stringify(command)}\n}`
+      }
+      return atom.clipboard.write(content)
+    }
+    keystrokeTd.appendChild(copyIcon)
+
+    const keystrokesSpan = document.createElement('span')
+    keystrokesSpan.textContent = keystrokes
+    keystrokeTd.appendChild(keystrokesSpan)
+    tr.appendChild(keystrokeTd)
+
+    const commandTd = document.createElement('td')
+    commandTd.classList.add('command')
+    commandTd.textContent = command
+    tr.appendChild(commandTd)
+
+    const sourceTd = document.createElement('td')
+    sourceTd.classList.add('source')
+    sourceTd.textContent = source
+    tr.appendChild(sourceTd)
+
+    const selectorTd = document.createElement('td')
+    selectorTd.classList.add('selector')
+    selectorTd.textContent = selector
+    tr.appendChild(selectorTd)
+
+    return tr
+  }
+
+  didClickOpenKeymapFile (e) {
+    e.preventDefault()
+    atom.commands.dispatch(atom.views.getView(atom.workspace), 'application:open-your-keymap')
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+
+  // Private: Returns a user friendly description of where a keybinding was
+  // loaded from.
+  //
+  // * filePath:
+  //   The absolute path from which the keymap was loaded
+  //
+  // Returns one of:
+  // * `Core` indicates it comes from a bundled package.
+  // * `User` indicates that it was defined by a user.
+  // * `<package-name>` the package which defined it.
+  // * `Unknown` if an invalid path was passed in.
+  static determineSource (filePath) {
+    if (!filePath) {
+      return 'Unknown'
+    }
+
+    if (filePath.indexOf(path.join(atom.getLoadSettings().resourcePath, 'keymaps')) === 0) {
+      return 'Core'
+    } else if (filePath === atom.keymaps.getUserKeymapPath()) {
+      return 'User'
+    } else {
+      const pathParts = filePath.split(path.sep)
+      const packageNameIndex = pathParts.length - 3
+      const packageName = pathParts[packageNameIndex] != null ? pathParts[packageNameIndex] : ''
+      return _.undasherize(_.uncamelcase(packageName))
+    }
+  }
+}
diff --git a/packages/settings-view/lib/list-view.js b/packages/settings-view/lib/list-view.js
new file mode 100644
index 000000000..b77281e90
--- /dev/null
+++ b/packages/settings-view/lib/list-view.js
@@ -0,0 +1,54 @@
+module.exports =
+class ListView {
+  // * `list` a {List} object
+  // * `container` a jQuery element
+  // * `createView` a Function that returns a jQuery element / HTMLElement
+  //   * `item` the item to create the view for
+  constructor (list, container, createView) {
+    this.list = list
+    this.container = container
+    this.createView = createView
+    this.views = []
+    this.viewMap = {}
+    this.list.onDidAddItem(item => this.addView(item))
+    this.list.onDidRemoveItem(item => this.removeView(item))
+    this.addViews()
+  }
+
+  getViews () {
+    return this.views
+  }
+
+  filterViews (filterFn) {
+    return this.list.filterItems(filterFn).map((item) => this.viewMap[this.list.keyForItem(item)])
+  }
+
+  addViews () {
+    for (const item of this.list.getItems()) {
+      this.addView(item)
+    }
+  }
+
+  addView (item) {
+    const view = this.createView(item)
+    this.views.push(view)
+    this.viewMap[this.list.keyForItem(item)] = view
+
+    const row = document.createElement('div')
+    row.classList.add('row')
+    row.appendChild(view.element)
+    this.container.insertBefore(row, this.container.children[0])
+  }
+
+  removeView (item) {
+    const key = this.list.keyForItem(item)
+    const view = this.viewMap[key]
+    if (view) {
+      const index = this.views.indexOf(view)
+      if (index > -1) this.views.splice(index, 1)
+      delete this.viewMap[key]
+      view.element.parentElement.remove()
+      view.destroy()
+    }
+  }
+}
diff --git a/packages/settings-view/lib/list.js b/packages/settings-view/lib/list.js
new file mode 100644
index 000000000..656c37484
--- /dev/null
+++ b/packages/settings-view/lib/list.js
@@ -0,0 +1,71 @@
+const {Emitter} = require('atom')
+
+module.exports =
+class List {
+  constructor (key) {
+    this.key = key
+    this.items = []
+    this.emitter = new Emitter()
+  }
+
+  getItems () {
+    return this.items
+  }
+
+  filterItems (filterFn) {
+    const result = []
+    for (const item of this.items) {
+      if (filterFn(item)) {
+        result.push(item)
+      }
+    }
+    return result
+  }
+
+  keyForItem (item) {
+    return item[this.key]
+  }
+
+  setItems (items) {
+    items = items.slice()
+    const setToAdd = difference(items, this.items, this.key)
+    const setToRemove = difference(this.items, items, this.key)
+
+    this.items = items
+
+    for (const item of setToAdd) {
+      this.emitter.emit('did-add-item', item)
+    }
+
+    for (const item of setToRemove) {
+      this.emitter.emit('did-remove-item', item)
+    }
+  }
+
+  onDidAddItem (callback) {
+    return this.emitter.on('did-add-item', callback)
+  }
+
+  onDidRemoveItem (callback) {
+    return this.emitter.on('did-remove-item', callback)
+  }
+}
+
+const difference = (array1, array2, key) => {
+  const obj1 = {}
+  for (const item of array1) {
+    obj1[item[key]] = item
+  }
+
+  const obj2 = {}
+  for (const item of array2) {
+    obj2[item[key]] = item
+  }
+
+  const diff = []
+  for (const k in obj1) {
+    const v = obj1[k]
+    if (obj2[k] == null) diff.push(v)
+  }
+  return diff
+}
diff --git a/packages/settings-view/lib/main.js b/packages/settings-view/lib/main.js
new file mode 100644
index 000000000..6efb6f0be
--- /dev/null
+++ b/packages/settings-view/lib/main.js
@@ -0,0 +1,97 @@
+let SettingsView = null
+let settingsView = null
+
+let statusView = null
+
+const PackageManager = require('./package-manager')
+let packageManager = null
+
+const SnippetsProvider = {
+  getSnippets () { return atom.config.scopedSettingsStore.propertySets }
+}
+
+const CONFIG_URI = 'atom://config'
+
+module.exports = {
+  handleURI (parsed) {
+    switch (parsed.pathname) {
+      case '/show-package': this.showPackage(parsed.query.package)
+    }
+  },
+
+  showPackage (packageName) {
+    atom.workspace.open(`atom://config/packages/${packageName}`)
+  },
+
+  activate () {
+    atom.workspace.addOpener(uri => {
+      if (uri.startsWith(CONFIG_URI)) {
+        if (settingsView == null || settingsView.destroyed) {
+          settingsView = this.createSettingsView({uri})
+        } else {
+          const pane = atom.workspace.paneForItem(settingsView)
+          if (pane) pane.activate()
+        }
+
+        settingsView.showPanelForURI(uri)
+        return settingsView
+      }
+    })
+
+    atom.commands.add('atom-workspace', {
+      'settings-view:open' () { atom.workspace.open(CONFIG_URI) },
+      'settings-view:core' () { atom.workspace.open(`${CONFIG_URI}/core`) },
+      'settings-view:editor' () { atom.workspace.open(`${CONFIG_URI}/editor`) },
+      'settings-view:show-keybindings' () { atom.workspace.open(`${CONFIG_URI}/keybindings`) },
+      'settings-view:change-themes' () { atom.workspace.open(`${CONFIG_URI}/themes`) },
+      'settings-view:install-packages-and-themes' () { atom.workspace.open(`${CONFIG_URI}/install`) },
+      'settings-view:view-installed-themes' () { atom.workspace.open(`${CONFIG_URI}/themes`) },
+      'settings-view:uninstall-themes' () { atom.workspace.open(`${CONFIG_URI}/themes`) },
+      'settings-view:view-installed-packages' () { atom.workspace.open(`${CONFIG_URI}/packages`) },
+      'settings-view:uninstall-packages' () { atom.workspace.open(`${CONFIG_URI}/packages`) },
+      'settings-view:check-for-package-updates' () { atom.workspace.open(`${CONFIG_URI}/updates`) }
+    })
+
+    if (process.platform === 'win32' && require('atom').WinShell != null) {
+      atom.commands.add('atom-workspace', {'settings-view:system' () { atom.workspace.open(`${CONFIG_URI}/system`) }})
+    }
+  },
+
+  deactivate () {
+    if (settingsView) settingsView.destroy()
+    if (statusView) statusView.destroy()
+    settingsView = null
+    packageManager = null
+    statusView = null
+    atom.notifications.addWarning("Warning! You have disabled the settings-view package. To enable it again, edit the [`config.cson`](https://pulsar-edit.dev/docs/launch-manual/sections/using-pulsar/#global-configuration-settings) by removing the `settings-view` entry from `core: disabled packages:`");
+  },
+
+  consumeStatusBar (statusBar) {
+    if (packageManager == null) packageManager = new PackageManager()
+    packageManager.getOutdated().then(updates => {
+      if (packageManager) {
+        const PackageUpdatesStatusView = require('./package-updates-status-view')
+        statusView = new PackageUpdatesStatusView()
+        statusView.initialize(statusBar, packageManager, updates)
+      }
+    })
+  },
+
+  consumeSnippets (snippets) {
+    if (typeof snippets.getUnparsedSnippets === 'function') {
+      SnippetsProvider.getSnippets = snippets.getUnparsedSnippets.bind(snippets)
+    }
+    if (typeof snippets.getUserSnippetsPath === 'function') {
+      SnippetsProvider.getUserSnippetsPath = snippets.getUserSnippetsPath.bind(snippets)
+    }
+  },
+
+  createSettingsView (params) {
+    if (SettingsView == null) SettingsView = require('./settings-view')
+    if (packageManager == null) packageManager = new PackageManager()
+    params.packageManager = packageManager
+    params.snippetsProvider = SnippetsProvider
+    settingsView = new SettingsView(params)
+    return settingsView
+  }
+}
diff --git a/packages/settings-view/lib/package-card.js b/packages/settings-view/lib/package-card.js
new file mode 100644
index 000000000..19fd8e9ef
--- /dev/null
+++ b/packages/settings-view/lib/package-card.js
@@ -0,0 +1,601 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import {CompositeDisposable, Disposable} from 'atom'
+import {shell} from 'electron'
+import etch from 'etch'
+
+import {ownerFromRepository} from './utils'
+
+let marked = null
+
+export default class PackageCard {
+  constructor (pack, settingsView, packageManager, options = {}) {
+    this.pack = pack
+    this.settingsView = settingsView
+    this.packageManager = packageManager
+    this.disposables = new CompositeDisposable()
+
+    // It might be useful to either wrap this.pack in a class that has a
+    // ::validate method, or add a method here. At the moment I think all cases
+    // of malformed package metadata are handled here and in ::content but belt
+    // and suspenders, you know
+    this.client = this.packageManager.getClient()
+    this.type = this.pack.theme ? 'theme' : 'package'
+    this.name = this.pack.name
+    this.onSettingsView = options.onSettingsView
+
+    if (this.pack.latestVersion !== this.pack.version) {
+      this.newVersion = this.pack.latestVersion
+    }
+
+    if (this.pack.apmInstallSource && this.pack.apmInstallSource.type === 'git') {
+      if (this.pack.apmInstallSource.sha !== this.pack.latestSha) {
+        this.newSha = this.pack.latestSha
+      }
+    }
+
+    // Default to displaying the download count
+    if (!options.stats) {
+      options.stats = {downloads: true}
+    }
+
+    etch.initialize(this)
+
+    this.displayStats(options)
+    this.handlePackageEvents()
+    this.handleButtonEvents(options)
+    this.loadCachedMetadata()
+
+    // themes have no status and cannot be dis/enabled
+    if (this.type === 'theme') {
+      this.refs.statusIndicator.remove()
+      this.refs.enablementButton.remove()
+    }
+
+    if (atom.packages.isBundledPackage(this.pack.name)) {
+      this.refs.installButtonGroup.remove()
+      this.refs.uninstallButton.remove()
+    }
+
+    if (!this.newVersion && !this.newSha) {
+      this.refs.updateButtonGroup.style.display = 'none'
+    }
+
+    this.hasCompatibleVersion = true
+    this.updateInterfaceState()
+  }
+
+  render () {
+    const displayName = (this.pack.gitUrlInfo ? this.pack.gitUrlInfo.project : this.pack.name) || ''
+    const owner = ownerFromRepository(this.pack.repository)
+    const description = this.pack.description || ''
+
+    return (
+      <div className='package-card col-lg-8'>
+        <div ref='statsContainer' className='stats pull-right'>
+          <span ref='packageStars' className='stats-item'>
+            <span ref='stargazerIcon' className='icon icon-star' />
+            <span ref='stargazerCount' className='value' />
+          </span>
+
+          <span ref='packageDownloads' className='stats-item'>
+            <span ref='downloadIcon' className='icon icon-cloud-download' />
+            <span ref='downloadCount' className='value' />
+          </span>
+        </div>
+
+        <div className='body'>
+          <h4 className='card-name'>
+            <a className='package-name' ref='packageName'>{displayName}</a>
+            <span className='package-version'>
+              <span ref='versionValue' className='value'>{String(this.pack.version)}</span>
+            </span>
+          </h4>
+          <span ref='packageDescription' className='package-description'>{description}</span>
+          <div ref='packageMessage' className='package-message' />
+        </div>
+
+        <div className='meta'>
+          <div ref='metaUserContainer' className='meta-user'>
+            <a ref='avatarLink'>
+              {/* A transparent gif so there is no "broken border" */}
+              <img ref='avatar' className='avatar' src='data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7' />
+            </a>
+            <a ref='loginLink' className='author'>{owner}</a>
+          </div>
+          <div className='meta-controls'>
+            <div className='btn-toolbar'>
+              <div ref='updateButtonGroup' className='btn-group'>
+                <button type='button' className='btn btn-info icon icon-cloud-download install-button' ref='updateButton'>Update</button>
+              </div>
+              <div ref='installButtonGroup' className='btn-group'>
+                <button type='button' className='btn btn-info icon icon-cloud-download install-button' ref='installButton'>Install</button>
+              </div>
+              <div ref='packageActionButtonGroup' className='btn-group'>
+                <button type='button' className='btn icon icon-gear settings' ref='settingsButton'>Settings</button>
+                <button type='button' className='btn icon icon-trashcan uninstall-button' ref='uninstallButton'>Uninstall</button>
+                <button type='button' className='btn icon icon-playback-pause enablement' ref='enablementButton'>
+                  <span className='disable-text'>Disable</span>
+                </button>
+                <button type='button' className='btn status-indicator' tabIndex='-1' ref='statusIndicator' />
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    )
+  }
+
+  locateCompatiblePackageVersion (callback) {
+    this.packageManager.loadCompatiblePackageVersion(this.pack.name, (err, pack) => {
+      if (err != null) {
+        console.error(err)
+      }
+
+      const packageVersion = pack.version
+
+      // A compatible version exist, we activate the install button and
+      // set this.installablePack so that the install action installs the
+      // compatible version of the package.
+      if (packageVersion) {
+        this.refs.versionValue.textContent = packageVersion
+        if (packageVersion !== this.pack.version) {
+          this.refs.versionValue.classList.add('text-warning')
+          this.refs.packageMessage.classList.add('text-warning')
+          this.refs.packageMessage.textContent = `Version ${packageVersion} is not the latest version available for this package, but it's the latest that is compatible with your version of Pulsar.`
+        }
+
+        this.installablePack = pack
+        this.hasCompatibleVersion = true
+      } else {
+        this.hasCompatibleVersion = false
+        this.refs.versionValue.classList.add('text-error')
+        this.refs.packageMessage.classList.add('text-error')
+        this.refs.packageMessage.insertAdjacentText(
+          'beforeend',
+          `There's no version of this package that is compatible with your Pulsar version. The version must satisfy ${this.pack.engines.atom}.`
+        )
+        console.error(`No available version compatible with the installed Pulsar version: ${atom.getVersion()}`)
+      }
+
+      callback()
+    })
+  }
+
+  handleButtonEvents (options) {
+    if (options && options.onSettingsView) {
+      this.refs.settingsButton.style.display = 'none'
+    } else {
+      const clickHandler = (event) => {
+        event.stopPropagation()
+        this.settingsView.showPanel(this.pack.name, {back: options ? options.back : null, pack: this.pack})
+      }
+
+      this.element.addEventListener('click', clickHandler)
+      this.disposables.add(new Disposable(() => { this.element.removeEventListener('click', clickHandler) }))
+
+      this.refs.settingsButton.addEventListener('click', clickHandler)
+      this.disposables.add(new Disposable(() => { this.refs.settingsButton.removeEventListener('click', clickHandler) }))
+    }
+
+    const installButtonClickHandler = (event) => {
+      event.stopPropagation()
+      this.install()
+    }
+    this.refs.installButton.addEventListener('click', installButtonClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.installButton.removeEventListener('click', installButtonClickHandler) }))
+
+    const uninstallButtonClickHandler = (event) => {
+      event.stopPropagation()
+      this.uninstall()
+    }
+    this.refs.uninstallButton.addEventListener('click', uninstallButtonClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.uninstallButton.removeEventListener('click', uninstallButtonClickHandler) }))
+
+    const updateButtonClickHandler = (event) => {
+      event.stopPropagation()
+      this.update().then(() => {
+        let oldVersion = ''
+        let newVersion = ''
+
+        if (this.pack.apmInstallSource && this.pack.apmInstallSource.type === 'git') {
+          oldVersion = this.pack.apmInstallSource.sha.substr(0, 8)
+          newVersion = `${this.pack.latestSha.substr(0, 8)}`
+        } else if (this.pack.version && this.pack.latestVersion) {
+          oldVersion = this.pack.version
+          newVersion = this.pack.latestVersion
+        }
+
+        let detail = ''
+        if (oldVersion && newVersion) {
+          detail = `${oldVersion} -> ${newVersion}`
+        }
+
+        const notification = atom.notifications.addSuccess(`Restart Pulsar to complete the update of \`${this.pack.name}\`.`, {
+          dismissable: true,
+          buttons: [{
+            text: 'Restart now',
+            onDidClick () { return atom.restartApplication() }
+          },
+          {
+            text: 'I\'ll do it later',
+            onDidClick () { notification.dismiss() }
+          }],
+          detail
+        })
+      })
+    }
+    this.refs.updateButton.addEventListener('click', updateButtonClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.updateButton.removeEventListener('click', updateButtonClickHandler) }))
+
+    const packageNameClickHandler = (event) => {
+      event.stopPropagation()
+      shell.openExternal(`https://web.pulsar-edit.dev/packages/${this.pack.name}`)
+    }
+    this.refs.packageName.addEventListener('click', packageNameClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.packageName.removeEventListener('click', packageNameClickHandler) }))
+
+    const packageAuthorClickHandler = (event) => {
+      event.stopPropagation()
+      shell.openExternal(`https://web.pulsar-edit.dev/users/${ownerFromRepository(this.pack.repository)}`) //TODO: Fix - This does not current exist but this will at least be more accurate
+    }
+    this.refs.loginLink.addEventListener('click', packageAuthorClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.loginLink.removeEventListener('click', packageAuthorClickHandler) }))
+    this.refs.avatarLink.addEventListener('click', packageAuthorClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.avatarLink.removeEventListener('click', packageAuthorClickHandler) }))
+
+    const enablementButtonClickHandler = (event) => {
+      event.stopPropagation()
+      event.preventDefault()
+      if (this.isDisabled()) {
+        atom.packages.enablePackage(this.pack.name)
+      } else {
+        atom.packages.disablePackage(this.pack.name)
+      }
+    }
+    this.refs.enablementButton.addEventListener('click', enablementButtonClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.enablementButton.removeEventListener('click', enablementButtonClickHandler) }))
+
+    const packageMessageClickHandler = (event) => {
+      const target = event.target.closest('a')
+      if (target) {
+        event.stopPropagation()
+        event.preventDefault()
+        if (target.href && target.href.startsWith('atom:')) {
+          atom.workspace.open(target.href)
+        }
+      }
+    }
+    this.refs.packageMessage.addEventListener('click', packageMessageClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.packageMessage.removeEventListener('click', packageMessageClickHandler) }))
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    return etch.destroy(this)
+  }
+
+  loadCachedMetadata () {
+    this.client.avatar(ownerFromRepository(this.pack.repository), (err, avatarPath) => {
+      if (!err && avatarPath) {
+        this.refs.avatar.src = `file://${avatarPath}`
+      }
+    })
+
+    this.client.package(this.pack.name, (err, data) => {
+      // We don't need to actually handle the error here, we can just skip
+      // showing the download count if there's a problem.
+      if (!err) {
+        if (data == null) {
+          data = {}
+        }
+
+        if (this.pack.apmInstallSource && this.pack.apmInstallSource.type === 'git') {
+          this.refs.downloadIcon.classList.remove('icon-cloud-download')
+          this.refs.downloadIcon.classList.add('icon-git-branch')
+          this.refs.downloadCount.textContent = this.pack.apmInstallSource.sha.substr(0, 8)
+        } else {
+          this.refs.stargazerCount.textContent = data.stargazers_count ? data.stargazers_count.toLocaleString() : ''
+          this.refs.downloadCount.textContent = data.downloads ? data.downloads.toLocaleString() : ''
+        }
+      }
+    })
+  }
+
+  updateInterfaceState () {
+    this.refs.versionValue.textContent = (this.installablePack ? this.installablePack.version : null) || this.pack.version
+    if (this.pack.apmInstallSource && this.pack.apmInstallSource.type === 'git') {
+      this.refs.downloadCount.textContent = this.pack.apmInstallSource.sha.substr(0, 8)
+    }
+
+    this.updateSettingsState()
+    this.updateInstalledState()
+    this.updateDisabledState()
+  }
+
+  updateSettingsState () {
+    if (this.hasSettings() && !this.onSettingsView) {
+      this.refs.settingsButton.style.display = ''
+    } else {
+      this.refs.settingsButton.style.display = 'none'
+    }
+  }
+
+  // Section: disabled state updates
+
+  updateDisabledState () {
+    if (this.isDisabled()) {
+      this.displayDisabledState()
+    } else if (this.element.classList.contains('disabled')) {
+      this.displayEnabledState()
+    }
+  }
+
+  displayEnabledState () {
+    this.element.classList.remove('disabled')
+    if (this.type === 'theme') {
+      this.refs.enablementButton.style.display = 'none'
+    }
+    this.refs.enablementButton.querySelector('.disable-text').textContent = 'Disable'
+    this.refs.enablementButton.classList.add('icon-playback-pause')
+    this.refs.enablementButton.classList.remove('icon-playback-play')
+    this.refs.statusIndicator.classList.remove('is-disabled')
+  }
+
+  displayDisabledState () {
+    this.element.classList.add('disabled')
+    this.refs.enablementButton.querySelector('.disable-text').textContent = 'Enable'
+    this.refs.enablementButton.classList.add('icon-playback-play')
+    this.refs.enablementButton.classList.remove('icon-playback-pause')
+    this.refs.statusIndicator.classList.add('is-disabled')
+    this.refs.enablementButton.disabled = false
+  }
+
+  // Section: installed state updates
+
+  updateInstalledState () {
+    if (this.isInstalled()) {
+      this.displayInstalledState()
+    } else {
+      this.displayNotInstalledState()
+    }
+  }
+
+  displayInstalledState () {
+    if (this.newVersion || this.newSha) {
+      this.refs.updateButtonGroup.style.display = ''
+      if (this.newVersion) {
+        this.refs.updateButton.textContent = `Update to ${this.newVersion}`
+      } else if (this.newSha) {
+        this.refs.updateButton.textContent = `Update to ${this.newSha.substr(0, 8)}`
+      }
+    } else {
+      this.refs.updateButtonGroup.style.display = 'none'
+    }
+
+    this.refs.installButtonGroup.style.display = 'none'
+    this.refs.packageActionButtonGroup.style.display = ''
+    this.refs.uninstallButton.style.display = ''
+  }
+
+  displayNotInstalledState () {
+    this.refs.uninstallButton.style.display = 'none'
+    const atomVersion = this.packageManager.normalizeVersion(atom.getVersion())
+    if (!this.packageManager.satisfiesVersion(atomVersion, this.pack)) {
+      this.hasCompatibleVersion = false
+      this.setNotInstalledStateButtons()
+      this.locateCompatiblePackageVersion(() => { this.setNotInstalledStateButtons() })
+    } else {
+      this.setNotInstalledStateButtons()
+    }
+  }
+
+  setNotInstalledStateButtons () {
+    if (!this.hasCompatibleVersion) {
+      this.refs.installButtonGroup.style.display = 'none'
+      this.refs.updateButtonGroup.style.display = 'none'
+    } else if (this.newVersion || this.newSha) {
+      this.refs.updateButtonGroup.style.display = ''
+      this.refs.installButtonGroup.style.display = 'none'
+    } else {
+      this.refs.updateButtonGroup.style.display = 'none'
+      this.refs.installButtonGroup.style.display = ''
+    }
+    this.refs.packageActionButtonGroup.style.display = 'none'
+  }
+
+  displayStats (options) {
+    if (options && options.stats && options.stats.downloads) {
+      this.refs.packageDownloads.style.display = ''
+    } else {
+      this.refs.packageDownloads.style.display = 'none'
+    }
+
+    if (options && options.stats && options.stats.stars) {
+      this.refs.packageStars.style.display = ''
+    } else {
+      this.refs.packageStars.style.display = 'none'
+    }
+  }
+
+  displayGitPackageInstallInformation () {
+    this.refs.metaUserContainer.remove()
+    this.refs.statsContainer.remove()
+    const {gitUrlInfo} = this.pack
+    if (gitUrlInfo.default === 'shortcut') {
+      this.refs.packageDescription.textContent = gitUrlInfo.https()
+    } else {
+      this.refs.packageDescription.textContent = gitUrlInfo.toString()
+    }
+    this.refs.installButton.classList.remove('icon-cloud-download')
+    this.refs.installButton.classList.add('icon-git-commit')
+    this.refs.updateButton.classList.remove('icon-cloud-download')
+    this.refs.updateButton.classList.add('icon-git-commit')
+  }
+
+  displayAvailableUpdate (newVersion) {
+    this.newVersion = newVersion
+    this.updateInterfaceState()
+  }
+
+  handlePackageEvents () {
+    this.disposables.add(atom.packages.onDidDeactivatePackage((pack) => {
+      if (pack.name === this.pack.name) {
+        this.updateDisabledState()
+      }
+    }))
+
+    this.disposables.add(atom.packages.onDidActivatePackage((pack) => {
+      if (pack.name === this.pack.name) {
+        this.updateDisabledState()
+      }
+    }))
+
+    this.disposables.add(atom.config.onDidChange('core.disabledPackages', () => {
+      this.updateDisabledState()
+    }))
+
+    this.subscribeToPackageEvent('package-installing theme-installing', () => {
+      this.updateInterfaceState()
+      this.refs.installButton.disabled = true
+      this.refs.installButton.classList.add('is-installing')
+    })
+
+    this.subscribeToPackageEvent('package-updating theme-updating', () => {
+      this.updateInterfaceState()
+      this.refs.updateButton.disabled = true
+      this.refs.updateButton.classList.add('is-installing')
+    })
+
+    this.subscribeToPackageEvent('package-uninstalling theme-uninstalling', () => {
+      this.updateInterfaceState()
+      this.refs.enablementButton.disabled = true
+      this.refs.uninstallButton.disabled = true
+      this.refs.uninstallButton.classList.add('is-uninstalling')
+    })
+
+    this.subscribeToPackageEvent('package-installed package-install-failed theme-installed theme-install-failed', () => {
+      const loadedPack = atom.packages.getLoadedPackage(this.pack.name)
+      const version = loadedPack && loadedPack.metadata ? loadedPack.metadata.version : null
+      if (version) {
+        this.pack.version = version
+      }
+      this.refs.installButton.disabled = false
+      this.refs.installButton.classList.remove('is-installing')
+      this.updateInterfaceState()
+    })
+
+    this.subscribeToPackageEvent('package-updated theme-updated', () => {
+      const loadedPack = atom.packages.getLoadedPackage(this.pack.name)
+      const metadata = loadedPack ? loadedPack.metadata : null
+      if (metadata && metadata.version) {
+        this.pack.version = metadata.version
+      }
+
+      if (metadata && metadata.apmInstallSource) {
+        this.pack.apmInstallSource = metadata.apmInstallSource
+      }
+
+      this.newVersion = null
+      this.newSha = null
+      this.refs.updateButton.disabled = false
+      this.refs.updateButton.classList.remove('is-installing')
+      this.updateInterfaceState()
+    })
+
+    this.subscribeToPackageEvent('package-update-failed theme-update-failed', () => {
+      this.refs.updateButton.disabled = false
+      this.refs.updateButton.classList.remove('is-installing')
+      this.updateInterfaceState()
+    })
+
+    this.subscribeToPackageEvent('package-uninstalled package-uninstall-failed theme-uninstalled theme-uninstall-failed', () => {
+      this.newVersion = null
+      this.newSha = null
+      this.refs.enablementButton.disabled = false
+      this.refs.uninstallButton.disabled = false
+      this.refs.uninstallButton.classList.remove('is-uninstalling')
+      this.updateInterfaceState()
+    })
+  }
+
+  isInstalled () {
+    return this.packageManager.isPackageInstalled(this.pack.name)
+  }
+
+  isDisabled () {
+    return atom.packages.isPackageDisabled(this.pack.name)
+  }
+
+  hasSettings () {
+    return this.packageManager.packageHasSettings(this.pack.name)
+  }
+
+  subscribeToPackageEvent (event, callback) {
+    this.disposables.add(this.packageManager.on(event, ({pack, error}) => {
+      if (pack.pack != null) {
+        pack = pack.pack
+      }
+
+      const packageName = pack.name
+      if (packageName === this.pack.name) {
+        callback(pack, error)
+      }
+    }))
+  }
+
+  /*
+  Section: Methods that should be on a Package model
+  */
+
+  install () {
+    this.packageManager.install(this.installablePack != null ? this.installablePack : this.pack, (error) => {
+      if (error != null) {
+        console.error(`Installing ${this.type} ${this.pack.name} failed`, error.stack != null ? error.stack : error, error.stderr)
+      } else {
+        // if a package was disabled before installing it, re-enable it
+        if (this.isDisabled()) {
+          atom.packages.enablePackage(this.pack.name)
+        }
+      }
+    })
+  }
+
+  update () {
+    if (!this.newVersion && !this.newSha) {
+      return Promise.resolve()
+    }
+
+    const pack = this.installablePack != null ? this.installablePack : this.pack
+    const version = this.newVersion ? `v${this.newVersion}` : `#${this.newSha.substr(0, 8)}`
+    return new Promise((resolve, reject) => {
+      this.packageManager.update(pack, this.newVersion, error => {
+        if (error != null) {
+          atom.assert(false, 'Package update failed', assertionError => {
+            assertionError.metadata = {
+              type: this.type,
+              name: pack.name,
+              version,
+              errorMessage: error.message,
+              errorStack: error.stack,
+              errorStderr: error.stderr
+            }
+          })
+          console.error(`Updating ${this.type} ${pack.name} to ${version} failed:\n`, error, error.stderr != null ? error.stderr : '')
+          reject(error)
+        } else {
+          resolve()
+        }
+      })
+    })
+  }
+
+  uninstall () {
+    this.packageManager.uninstall(this.pack, (error) => {
+      if (error != null) {
+        console.error(`Uninstalling ${this.type} ${this.pack.name} failed`, error.stack != null ? error.stack : error, error.stderr)
+      }
+    })
+  }
+}
diff --git a/packages/settings-view/lib/package-detail-view.js b/packages/settings-view/lib/package-detail-view.js
new file mode 100644
index 000000000..d8dc85b1a
--- /dev/null
+++ b/packages/settings-view/lib/package-detail-view.js
@@ -0,0 +1,517 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import path from 'path'
+import url from 'url'
+
+import _ from 'underscore-plus'
+import fs from 'fs-plus'
+import {shell} from 'electron'
+import {CompositeDisposable, Disposable} from 'atom'
+import etch from 'etch'
+
+import PackageCard from './package-card'
+import PackageGrammarsView from './package-grammars-view'
+import PackageKeymapView from './package-keymap-view'
+import PackageReadmeView from './package-readme-view'
+import PackageSnippetsView from './package-snippets-view'
+import SettingsPanel from './settings-panel'
+
+const NORMALIZE_PACKAGE_DATA_README_ERROR = 'ERROR: No README data found!'
+
+export default class PackageDetailView {
+  constructor (pack, settingsView, packageManager, snippetsProvider) {
+    this.pack = pack
+    this.settingsView = settingsView
+    this.packageManager = packageManager
+    this.snippetsProvider = snippetsProvider
+    this.disposables = new CompositeDisposable()
+    etch.initialize(this)
+    this.loadPackage()
+
+    this.disposables.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+
+    const packageRepoClickHandler = (event) => {
+      event.preventDefault()
+      const repoUrl = this.packageManager.getRepositoryUrl(this.pack)
+      if (typeof repoUrl === 'string') {
+        if (url.parse(repoUrl).pathname === '/pulsar-edit/pulsar') {
+          shell.openExternal(`${repoUrl}/tree/master/packages/${this.pack.name}`)
+        } else {
+          shell.openExternal(repoUrl)
+        }
+      }
+    }
+    this.refs.packageRepo.addEventListener('click', packageRepoClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.packageRepo.removeEventListener('click', packageRepoClickHandler) }))
+
+    const issueButtonClickHandler = (event) => {
+      event.preventDefault()
+      let bugUri = this.packageManager.getRepositoryBugUri(this.pack)
+      if (bugUri) {
+        shell.openExternal(bugUri)
+      }
+    }
+    this.refs.issueButton.addEventListener('click', issueButtonClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.issueButton.removeEventListener('click', issueButtonClickHandler) }))
+
+    const changelogButtonClickHandler = (event) => {
+      event.preventDefault()
+      if (this.changelogPath) {
+        this.openMarkdownFile(this.changelogPath)
+      }
+    }
+    this.refs.changelogButton.addEventListener('click', changelogButtonClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.changelogButton.removeEventListener('click', changelogButtonClickHandler) }))
+
+    const licenseButtonClickHandler = (event) => {
+      event.preventDefault()
+      if (this.licensePath) {
+        this.openMarkdownFile(this.licensePath)
+      }
+    }
+    this.refs.licenseButton.addEventListener('click', licenseButtonClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.licenseButton.removeEventListener('click', licenseButtonClickHandler) }))
+
+    const openButtonClickHandler = (event) => {
+      event.preventDefault()
+      if (fs.existsSync(this.pack.path)) {
+        atom.open({pathsToOpen: [this.pack.path]})
+      }
+    }
+    this.refs.openButton.addEventListener('click', openButtonClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.openButton.removeEventListener('click', openButtonClickHandler) }))
+
+    const learnMoreButtonClickHandler = (event) => {
+      event.preventDefault()
+      shell.openExternal(`https://web.pulsar-edit.dev/packages/${this.pack.name}`)
+    }
+    this.refs.learnMoreButton.addEventListener('click', learnMoreButtonClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.learnMoreButton.removeEventListener('click', learnMoreButtonClickHandler) }))
+
+    const breadcrumbClickHandler = (event) => {
+      event.preventDefault()
+      this.settingsView.showPanel(this.breadcrumbBackPanel)
+    }
+    this.refs.breadcrumb.addEventListener('click', breadcrumbClickHandler)
+    this.disposables.add(new Disposable(() => { this.refs.breadcrumb.removeEventListener('click', breadcrumbClickHandler) }))
+  }
+
+  completeInitialization () {
+    if (this.refs.packageCard) {
+      this.packageCard = this.refs.packageCard.packageCard
+    } else if (!this.packageCard) { // Had to load this from the network
+      this.packageCard = new PackageCard(this.pack.metadata, this.settingsView, this.packageManager, {onSettingsView: true})
+      this.refs.packageCardParent.replaceChild(this.packageCard.element, this.refs.loadingMessage)
+    }
+
+    this.refs.packageRepo.classList.remove('hidden')
+    this.refs.startupTime.classList.remove('hidden')
+    this.refs.buttons.classList.remove('hidden')
+    this.activateConfig()
+    this.populate()
+    this.updateFileButtons()
+    this.subscribeToPackageManager()
+    this.renderReadme()
+  }
+
+  loadPackage () {
+    const loadedPackage = atom.packages.getLoadedPackage(this.pack.name)
+    if (loadedPackage) {
+      this.pack = loadedPackage
+      this.completeInitialization()
+    } else {
+      // If the package metadata in `@pack` isn't complete, hit the network.
+      if (!this.pack.metadata || !this.pack.metadata.owner) {
+        this.fetchPackage()
+      } else {
+        this.completeInitialization()
+      }
+    }
+  }
+
+  fetchPackage () {
+    this.showLoadingMessage()
+    this.packageManager.getClient().package(this.pack.name, (err, packageData) => {
+      if (err || !packageData || !packageData.name) {
+        this.hideLoadingMessage()
+        this.showErrorMessage()
+      } else {
+        this.pack = packageData
+        // TODO: this should match Package.loadMetadata from core, but this is
+        // an acceptable hacky workaround
+        this.pack.metadata = _.extend(this.pack.metadata != null ? this.pack.metadata : {}, this.pack)
+        this.completeInitialization()
+      }
+    })
+  }
+
+  showLoadingMessage () {
+    this.refs.loadingMessage.classList.remove('hidden')
+  }
+
+  hideLoadingMessage () {
+    this.refs.loadingMessage.classList.add('hidden')
+  }
+
+  showErrorMessage () {
+    this.refs.errorMessage.classList.remove('hidden')
+  }
+
+  hideErrorMessage () {
+    this.refs.errorMessage.classList.add('hidden')
+  }
+
+  activateConfig () {
+    // Package.activateConfig() is part of the Private package API and should not be used outside of core.
+    if (atom.packages.isPackageLoaded(this.pack.name) && !atom.packages.isPackageActive(this.pack.name)) {
+      this.pack.activateConfig()
+    }
+  }
+
+  destroy () {
+    if (this.settingsPanel) {
+      this.settingsPanel.destroy()
+      this.settingsPanel = null
+    }
+
+    if (this.keymapView) {
+      this.keymapView.destroy()
+      this.keymapView = null
+    }
+
+    if (this.grammarsView) {
+      this.grammarsView.destroy()
+      this.grammarsView = null
+    }
+
+    if (this.snippetsView) {
+      this.snippetsView.destroy()
+      this.snippetsView = null
+    }
+
+    if (this.readmeView) {
+      this.readmeView.destroy()
+      this.readmeView = null
+    }
+
+    if (this.packageCard) {
+      this.packageCard.destroy()
+      this.packageCard = null
+    }
+
+    this.disposables.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  beforeShow (opts) {
+    if (opts.back == null) {
+      opts.back = 'Install'
+    }
+
+    this.breadcrumbBackPanel = opts.back
+    this.refs.breadcrumb.textContent = this.breadcrumbBackPanel
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  focus () {
+    this.element.focus()
+  }
+
+  render () {
+    let packageCardView
+    if (this.pack && this.pack.metadata && this.pack.metadata.owner) {
+      packageCardView = (
+        <div ref='packageCardParent' className='row'>
+          <PackageCardComponent
+            ref='packageCard'
+            settingsView={this.settingsView}
+            packageManager={this.packageManager}
+            metadata={this.pack.metadata}
+            options={{onSettingsView: true}} />
+        </div>
+      )
+    } else {
+      packageCardView = (
+        <div ref='packageCardParent' className='row'>
+          <div ref='loadingMessage' className='alert alert-info icon icon-hourglass'>{`Loading ${this.pack.name}\u2026`}</div>
+          <div ref='errorMessage' className='alert alert-danger icon icon-hourglass hidden'>Failed to load {this.pack.name} - try again later.</div>
+        </div>
+      )
+    }
+    return (
+      <div tabIndex='0' className='package-detail'>
+        <ol ref='breadcrumbContainer' className='native-key-bindings breadcrumb' tabIndex='-1'>
+          <li>
+            <a ref='breadcrumb' />
+          </li>
+          <li className='active'>
+            <a ref='title' />
+          </li>
+        </ol>
+
+        <div className='panels-item'>
+          <section className='section'>
+            <form className='section-container package-detail-view'>
+              <div className='container package-container'>
+                {packageCardView}
+              </div>
+
+              <p ref='packageRepo' className='link icon icon-repo repo-link hidden' />
+              <p ref='startupTime' className='text icon icon-dashboard hidden' tabIndex='-1' />
+
+              <div ref='buttons' className='btn-wrap-group hidden'>
+                <button ref='learnMoreButton' className='btn btn-default icon icon-link'>View on pulsar-edit.dev</button>
+                <button ref='issueButton' className='btn btn-default icon icon-bug'>Report Issue</button>
+                <button ref='changelogButton' className='btn btn-default icon icon-squirrel'>CHANGELOG</button>
+                <button ref='licenseButton' className='btn btn-default icon icon-law'>LICENSE</button>
+                <button ref='openButton' className='btn btn-default icon icon-link-external'>View Code</button>
+              </div>
+
+              <div ref='errors' />
+            </form>
+          </section>
+
+          <div ref='sections' />
+
+        </div>
+      </div>
+    )
+  }
+
+  populate () {
+    this.refs.title.textContent = `${_.undasherize(_.uncamelcase(this.pack.name))}`
+    this.type = this.pack.metadata.theme ? 'theme' : 'package'
+
+    const repoUrl = this.packageManager.getRepositoryUrl(this.pack)
+    if (repoUrl) {
+      const repoName = url.parse(repoUrl).pathname
+      this.refs.packageRepo.textContent = repoName.substring(1)
+      this.refs.packageRepo.style.display = ''
+    } else {
+      this.refs.packageRepo.style.display = 'none'
+    }
+
+    this.updateInstalledState()
+  }
+
+  updateInstalledState () {
+    if (this.settingsPanel) {
+      this.settingsPanel.destroy()
+      this.settingsPanel = null
+    }
+
+    if (this.keymapView) {
+      this.keymapView.destroy()
+      this.keymapView = null
+    }
+
+    if (this.grammarsView) {
+      this.grammarsView.destroy()
+      this.grammarsView = null
+    }
+
+    if (this.snippetsView) {
+      this.snippetsView.destroy()
+      this.snippetsView = null
+    }
+
+    if (this.readmeView) {
+      this.readmeView.destroy()
+      this.readmeView = null
+    }
+
+    this.updateFileButtons()
+    this.activateConfig()
+    this.refs.startupTime.style.display = 'none'
+
+    if (atom.packages.isPackageLoaded(this.pack.name)) {
+      if (!atom.packages.isPackageDisabled(this.pack.name)) {
+        this.settingsPanel = new SettingsPanel({namespace: this.pack.name, includeTitle: false})
+        this.keymapView = new PackageKeymapView(this.pack)
+        this.refs.sections.appendChild(this.settingsPanel.element)
+        this.refs.sections.appendChild(this.keymapView.element)
+
+        if (this.pack.path) {
+          this.grammarsView = new PackageGrammarsView(this.pack.path)
+          this.snippetsView = new PackageSnippetsView(this.pack, this.snippetsProvider)
+          this.refs.sections.appendChild(this.grammarsView.element)
+          this.refs.sections.appendChild(this.snippetsView.element)
+        }
+
+        this.refs.startupTime.innerHTML =
+          `This ${this.type} added <span class='highlight'>${this.getStartupTime()}ms</span> to startup time.`
+        this.refs.startupTime.style.display = ''
+      }
+    }
+
+    const sourceIsAvailable = this.packageManager.isPackageInstalled(this.pack.name) && !atom.packages.isBundledPackage(this.pack.name)
+    if (sourceIsAvailable) {
+      this.refs.openButton.style.display = ''
+    } else {
+      this.refs.openButton.style.display = 'none'
+    }
+
+    this.renderReadme()
+  }
+
+  renderReadme () {
+    let readme
+    if (this.pack.metadata.readme && this.pack.metadata.readme.trim() !== NORMALIZE_PACKAGE_DATA_README_ERROR) {
+      readme = this.pack.metadata.readme
+    } else {
+      readme = null
+    }
+
+    if (this.readmePath && fs.existsSync(this.readmePath) && fs.statSync(this.readmePath).isFile() && !readme) {
+      readme = fs.readFileSync(this.readmePath, {encoding: 'utf8'})
+    }
+
+    let readmeSrc
+
+    if (this.pack.path) {
+      // If package is installed, use installed path
+      readmeSrc = this.pack.path
+    } else {
+      // If package isn't installed, use url path
+      let repoUrl = this.packageManager.getRepositoryUrl(this.pack)
+
+      // Check if URL is undefined (i.e. package is unpublished)
+      if (repoUrl) {
+        readmeSrc = repoUrl + `/blob/master/`
+      }
+    }
+
+    const readmeView = new PackageReadmeView(readme, readmeSrc)
+    if (this.readmeView) {
+      this.readmeView.element.parentElement.replaceChild(readmeView.element, this.readmeView.element)
+      this.readmeView.destroy()
+    } else {
+      this.refs.sections.appendChild(readmeView.element)
+    }
+    this.readmeView = readmeView
+  }
+
+  subscribeToPackageManager () {
+    this.disposables.add(this.packageManager.on('theme-installed package-installed', ({pack}) => {
+      if (this.pack.name === pack.name) {
+        this.loadPackage()
+        this.updateInstalledState()
+      }
+    }))
+
+    this.disposables.add(this.packageManager.on('theme-uninstalled package-uninstalled', ({pack}) => {
+      if (this.pack.name === pack.name) {
+        return this.updateInstalledState()
+      }
+    }))
+
+    this.disposables.add(this.packageManager.on('theme-updated package-updated', ({pack}) => {
+      if (this.pack.name === pack.name) {
+        this.loadPackage()
+        this.updateFileButtons()
+        this.populate()
+      }
+    }))
+  }
+
+  openMarkdownFile (path) {
+    if (atom.packages.isPackageActive('markdown-preview')) {
+      atom.workspace.open(encodeURI(`markdown-preview://${path}`))
+    } else {
+      atom.workspace.open(path)
+    }
+  }
+
+  updateFileButtons () {
+    this.changelogPath = null
+    this.licensePath = null
+    this.readmePath = null
+
+    const packagePath = this.pack.path != null ? this.pack.path : atom.packages.resolvePackagePath(this.pack.name)
+    for (const child of fs.listSync(packagePath)) {
+      switch (path.basename(child, path.extname(child)).toLowerCase()) {
+        case 'changelog':
+        case 'history':
+          this.changelogPath = child
+          break
+        case 'license':
+        case 'licence':
+          this.licensePath = child
+          break
+        case 'readme':
+          this.readmePath = child
+          break
+      }
+
+      if (this.readmePath && this.changelogPath && this.licensePath) {
+        break
+      }
+    }
+
+    if (this.changelogPath) {
+      this.refs.changelogButton.style.display = ''
+    } else {
+      this.refs.changelogButton.style.display = 'none'
+    }
+
+    if (this.licensePath) {
+      this.refs.licenseButton.style.display = ''
+    } else {
+      this.refs.licenseButton.style.display = 'none'
+    }
+  }
+
+  getStartupTime () {
+    const loadTime = this.pack.loadTime != null ? this.pack.loadTime : 0
+    const activateTime = this.pack.activateTime != null ? this.pack.activateTime : 0
+    return loadTime + activateTime
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
+
+class PackageCardComponent {
+  constructor (props) {
+    this.packageCard = new PackageCard(props.metadata, props.settingsView, props.packageManager, props.options)
+    this.element = this.packageCard.element
+  }
+
+  update () {}
+
+  destroy () {}
+}
diff --git a/packages/settings-view/lib/package-grammars-view.js b/packages/settings-view/lib/package-grammars-view.js
new file mode 100644
index 000000000..ced70929f
--- /dev/null
+++ b/packages/settings-view/lib/package-grammars-view.js
@@ -0,0 +1,97 @@
+/** @babel */
+
+import path from 'path'
+import {CompositeDisposable} from 'atom'
+import SettingsPanel from './settings-panel'
+
+// View to display the grammars that a package has registered.
+export default class PackageGrammarsView {
+  constructor (packagePath) {
+    this.element = document.createElement('section')
+    this.element.classList.add('package-grammars')
+
+    this.grammarSettings = document.createElement('div')
+    this.element.appendChild(this.grammarSettings)
+
+    this.disposables = new CompositeDisposable()
+    this.packagePath = path.join(packagePath, path.sep)
+    this.addGrammars()
+    this.disposables.add(atom.grammars.onDidAddGrammar(() => this.addGrammars()))
+    this.disposables.add(atom.grammars.onDidUpdateGrammar(() => this.addGrammars()))
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    this.element.remove()
+  }
+
+  getPackageGrammars () {
+    const packageGrammars = []
+    const grammars = atom.grammars.grammars != null ? atom.grammars.grammars : []
+    for (let grammar of grammars) {
+      if (grammar.path) {
+        if (grammar.path.indexOf(this.packagePath) === 0) {
+          packageGrammars.push(grammar)
+        }
+      }
+    }
+    return packageGrammars.sort(function (grammar1, grammar2) {
+      const name1 = grammar1.name || grammar1.scopeName || ''
+      const name2 = grammar2.name || grammar2.scopeName || ''
+      return name1.localeCompare(name2)
+    })
+  }
+
+  addGrammarHeading (grammar, panel) {
+    const container = document.createElement('div')
+    container.classList.add('native-key-bindings', 'text')
+    container.tabIndex = -1
+
+    const grammarScope = document.createElement('div')
+    grammarScope.classList.add('grammar-scope')
+
+    const scopeStrong = document.createElement('strong')
+    scopeStrong.textContent = 'Scope: '
+    grammarScope.appendChild(scopeStrong)
+
+    const scopeSpan = document.createElement('span')
+    scopeSpan.textContent = grammar.scopeName != null ? grammar.scopeName : ''
+    grammarScope.appendChild(scopeSpan)
+    container.appendChild(grammarScope)
+
+    const grammarFileTypes = document.createElement('div')
+    grammarFileTypes.classList.add('grammar-filetypes')
+
+    const fileTypesStrong = document.createElement('strong')
+    fileTypesStrong.textContent = 'File Types: '
+    grammarFileTypes.appendChild(fileTypesStrong)
+
+    const fileTypes = grammar.fileTypes || []
+    const fileTypesSpan = document.createElement('span')
+    fileTypesSpan.textContent = fileTypes.join(', ')
+    grammarFileTypes.appendChild(fileTypesSpan)
+    container.appendChild(grammarFileTypes)
+
+    const sectionBody = panel.element.querySelector('.section-body')
+    sectionBody.parentElement.insertBefore(container, sectionBody)
+  }
+
+  addGrammars () {
+    this.grammarSettings.innerHTML = ''
+    for (let grammar of this.getPackageGrammars()) {
+      let {scopeName, name} = grammar
+      if (!scopeName || !name) {
+        continue
+      }
+
+      if (!scopeName.startsWith('.')) {
+        scopeName = `.${scopeName}`
+      }
+
+      const title = `${name} Grammar`
+      const panel = new SettingsPanel({title, scopeName, icon: 'puzzle'})
+      this.addGrammarHeading(grammar, panel)
+      this.grammarSettings.appendChild(panel.element)
+    }
+  }
+}
diff --git a/packages/settings-view/lib/package-keymap-view.js b/packages/settings-view/lib/package-keymap-view.js
new file mode 100644
index 000000000..47236b0f8
--- /dev/null
+++ b/packages/settings-view/lib/package-keymap-view.js
@@ -0,0 +1,186 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import path from 'path'
+import _ from 'underscore-plus'
+import {Disposable, CompositeDisposable} from 'atom'
+import etch from 'etch'
+import KeybindingsPanel from './keybindings-panel'
+
+// Displays the keybindings for a package namespace
+export default class PackageKeymapView {
+  constructor (pack) {
+    this.pack = pack
+    this.otherPlatformPattern = new RegExp(`\\.platform-(?!${_.escapeRegExp(process.platform)}\\b)`)
+    this.namespace = this.pack.name
+    this.disposables = new CompositeDisposable()
+    etch.initialize(this)
+
+    const packagesWithKeymapsDisabled = atom.config.get('core.packagesWithKeymapsDisabled') || []
+    this.refs.keybindingToggle.checked = !packagesWithKeymapsDisabled.includes(this.namespace)
+
+    const changeHandler = (event) => {
+      event.stopPropagation()
+      const value = this.refs.keybindingToggle.checked
+      if (value) {
+        atom.config.removeAtKeyPath('core.packagesWithKeymapsDisabled', this.namespace)
+      } else {
+        atom.config.pushAtKeyPath('core.packagesWithKeymapsDisabled', this.namespace)
+      }
+
+      this.updateKeyBindingView()
+    }
+    this.refs.keybindingToggle.addEventListener('change', changeHandler)
+    this.disposables.add(new Disposable(() => { this.refs.keybindingToggle.removeEventListener('change', changeHandler) }))
+
+    const copyIconClickHandler = (event) => {
+      const target = event.target.closest('.copy-icon')
+      if (target) {
+        event.preventDefault()
+        event.stopPropagation()
+        this.writeKeyBindingToClipboard(target.closest('tr').dataset)
+      }
+    }
+    this.element.addEventListener('click', copyIconClickHandler)
+    this.disposables.add(new Disposable(() => { this.element.removeEventListener('click', copyIconClickHandler) }))
+
+    this.updateKeyBindingView()
+
+    let hasKeymaps = false
+    // eslint-disable-next-line no-unused-vars
+    for (let [packageKeymapsPath, keymap] of atom.packages.getLoadedPackage(this.namespace).keymaps) {
+      if (keymap.length > 0) {
+        hasKeymaps = true
+        break
+      }
+    }
+
+    if (this.refs.keybindingItems.children.length === 0 && !hasKeymaps) {
+      this.element.style.display = 'none'
+    }
+  }
+
+  update () {}
+
+  destroy () {
+    this.disposables.dispose()
+    return etch.destroy(this)
+  }
+
+  render () {
+    return (
+      <section className='section'>
+        <div className='section-heading icon icon-keyboard'>Keybindings</div>
+        <div className='checkbox'>
+          <label for='toggleKeybindings'>
+            <input id='toggleKeybindings' className='input-checkbox' type='checkbox' ref='keybindingToggle' />
+            <div className='setting-title'>Enable</div>
+          </label>
+          <div className='setting-description'>
+            {"Disable this if you want to bind your own keystrokes for this package's commands in your keymap."}
+          </div>
+        </div>
+        <table className='package-keymap-table table native-key-bindings text' tabIndex='-1'>
+          <thead>
+            <tr>
+              <th>Keystroke</th>
+              <th>Command</th>
+              <th>Selector</th>
+              <th>Source</th>
+            </tr>
+          </thead>
+          <tbody ref='keybindingItems' />
+        </table>
+      </section>
+    )
+  }
+
+  updateKeyBindingView () {
+    this.refs.keybindingItems.innerHTML = ''
+
+    const packagesWithKeymapsDisabled = atom.config.get('core.packagesWithKeymapsDisabled') || []
+    const keybindingsDisabled = packagesWithKeymapsDisabled.includes(this.namespace)
+    if (keybindingsDisabled) {
+      this.refs.keybindingItems.classList.add('text-subtle')
+    } else {
+      this.refs.keybindingItems.classList.remove('text-subtle')
+    }
+
+    const keyBindings = []
+    if (atom.keymaps.build) {
+      // eslint-disable-next-line no-unused-vars
+      for (const [keymapPath, keymap] of atom.packages.getLoadedPackage(this.namespace).keymaps) {
+        keyBindings.push(...atom.keymaps.build(this.namespace, keymap, 0, false))
+      }
+    } else {
+      // Backwards compatibility for Atom <= 1.19
+      for (const keyBinding of atom.keymaps.getKeyBindings()) {
+        const {command} = keyBinding
+        if (command && command.indexOf && command.indexOf(`${this.namespace}:`) === 0) {
+          keyBindings.push(keyBinding)
+        }
+      }
+    }
+
+    for (const keyBinding of keyBindings) {
+      const {command, keystrokes, selector, source} = keyBinding
+      if (!command) {
+        continue
+      }
+
+      if (this.otherPlatformPattern.test(selector)) {
+        continue
+      }
+
+      const keyBindingRow = document.createElement('tr')
+      keyBindingRow.dataset.selector = selector
+      keyBindingRow.dataset.keystrokes = keystrokes
+      keyBindingRow.dataset.command = command
+
+      const keystrokesTd = document.createElement('td')
+
+      const copyIconSpan = document.createElement('span')
+      copyIconSpan.classList.add('icon', 'icon-clippy', 'copy-icon')
+      keystrokesTd.appendChild(copyIconSpan)
+
+      const keystrokesSpan = document.createElement('span')
+      keystrokesSpan.textContent = keystrokes
+      keystrokesTd.appendChild(keystrokesSpan)
+
+      keyBindingRow.appendChild(keystrokesTd)
+
+      const commandTd = document.createElement('td')
+      commandTd.textContent = command
+      keyBindingRow.appendChild(commandTd)
+
+      const selectorTd = document.createElement('td')
+      selectorTd.textContent = selector
+      keyBindingRow.appendChild(selectorTd)
+
+      const sourceTd = document.createElement('td')
+      sourceTd.textContent = KeybindingsPanel.determineSource(source)
+      keyBindingRow.appendChild(sourceTd)
+
+      this.refs.keybindingItems.appendChild(keyBindingRow)
+    }
+  }
+
+  writeKeyBindingToClipboard ({selector, keystrokes, command}) {
+    let content
+    const keymapExtension = path.extname(atom.keymaps.getUserKeymapPath())
+    if (keymapExtension === '.cson') {
+      content = `\
+'${selector}':
+  '${keystrokes}': '${command}'\
+`
+    } else {
+      content = `\
+"${selector}": {
+  "${keystrokes}": "${command}"
+}\
+`
+    }
+
+    atom.clipboard.write(content)
+  }
+}
diff --git a/packages/settings-view/lib/package-manager.coffee b/packages/settings-view/lib/package-manager.coffee
new file mode 100644
index 000000000..9c9b0d79a
--- /dev/null
+++ b/packages/settings-view/lib/package-manager.coffee
@@ -0,0 +1,445 @@
+_ = require 'underscore-plus'
+{BufferedProcess, CompositeDisposable, Emitter} = require 'atom'
+semver = require 'semver'
+
+Client = require './atom-io-client'
+
+module.exports =
+class PackageManager
+  # Millisecond expiry for cached loadOutdated, etc. values
+  CACHE_EXPIRY: 1000*60*10
+
+  constructor: ->
+    @packagePromises = []
+    @apmCache =
+      loadOutdated:
+        value: null
+        expiry: 0
+
+    @emitter = new Emitter
+
+  getClient: ->
+    @client ?= new Client(this)
+
+  isPackageInstalled: (packageName) ->
+    if atom.packages.isPackageLoaded(packageName)
+      true
+    else
+      atom.packages.getAvailablePackageNames().indexOf(packageName) > -1
+
+  packageHasSettings: (packageName) ->
+    grammars = atom.grammars.getGrammars() ? []
+    for grammar in grammars when grammar.path
+      return true if grammar.packageName is packageName
+
+    pack = atom.packages.getLoadedPackage(packageName)
+    pack.activateConfig() if pack? and not atom.packages.isPackageActive(packageName)
+    schema = atom.config.getSchema(packageName)
+    schema? and (schema.type isnt 'any')
+
+  setProxyServers: (callback) =>
+    session = atom.getCurrentWindow().webContents.session
+    session.resolveProxy 'http://atom.io', (httpProxy) =>
+      @applyProxyToEnv('http_proxy', httpProxy)
+      session.resolveProxy 'https://pulsar-edit.dev', (httpsProxy) =>
+        @applyProxyToEnv('https_proxy', httpsProxy)
+        callback()
+
+  setProxyServersAsync: (callback) =>
+    httpProxyPromise = atom.resolveProxy('http://atom.io').then((proxy) => @applyProxyToEnv('http_proxy', proxy))
+    httpsProxyPromise = atom.resolveProxy('https://pulsar-edit.dev').then((proxy) => @applyProxyToEnv('https_proxy', proxy))
+    Promise.all([httpProxyPromise, httpsProxyPromise]).then(callback)
+
+  applyProxyToEnv: (envName, proxy) ->
+    if proxy?
+      proxy = proxy.split(' ')
+      switch proxy[0].trim().toUpperCase()
+        when 'DIRECT' then delete process.env[envName]
+        when 'PROXY'  then process.env[envName] = 'http://' + proxy[1]
+    return
+
+  runCommand: (args, callback) ->
+    command = atom.packages.getApmPath()
+    outputLines = []
+    stdout = (lines) -> outputLines.push(lines)
+    errorLines = []
+    stderr = (lines) -> errorLines.push(lines)
+    exit = (code) ->
+      callback(code, outputLines.join('\n'), errorLines.join('\n'))
+
+    args.push('--no-color')
+
+    if atom.config.get('core.useProxySettingsWhenCallingApm')
+      bufferedProcess = new BufferedProcess({command, args, stdout, stderr, exit, autoStart: false})
+      if atom.resolveProxy?
+        @setProxyServersAsync -> bufferedProcess.start()
+      else
+        @setProxyServers -> bufferedProcess.start()
+      return bufferedProcess
+    else
+      return new BufferedProcess({command, args, stdout, stderr, exit})
+
+  loadInstalled: (callback) ->
+    args = ['ls', '--json']
+    errorMessage = 'Fetching local packages failed.'
+    apmProcess = @runCommand args, (code, stdout, stderr) ->
+      if code is 0
+        try
+          packages = JSON.parse(stdout) ? []
+        catch parseError
+          error = createJsonParseError(errorMessage, parseError, stdout)
+          return callback(error)
+        callback(null, packages)
+      else
+        error = new Error(errorMessage)
+        error.stdout = stdout
+        error.stderr = stderr
+        callback(error)
+
+    handleProcessErrors(apmProcess, errorMessage, callback)
+
+  loadFeatured: (loadThemes, callback) ->
+    unless callback
+      callback = loadThemes
+      loadThemes = false
+
+    args = ['featured', '--json']
+    version = atom.getVersion()
+    args.push('--themes') if loadThemes
+    args.push('--compatible', version) if semver.valid(version)
+    errorMessage = 'Fetching featured packages failed.'
+
+    apmProcess = @runCommand args, (code, stdout, stderr) ->
+      if code is 0
+        try
+          packages = JSON.parse(stdout) ? []
+        catch parseError
+          error = createJsonParseError(errorMessage, parseError, stdout)
+          return callback(error)
+
+        callback(null, packages)
+      else
+        error = new Error(errorMessage)
+        error.stdout = stdout
+        error.stderr = stderr
+        callback(error)
+
+    handleProcessErrors(apmProcess, errorMessage, callback)
+
+  loadOutdated: (clearCache, callback) ->
+    if clearCache
+      @clearOutdatedCache()
+    # Short circuit if we have cached data.
+    else if @apmCache.loadOutdated.value and @apmCache.loadOutdated.expiry > Date.now()
+      return callback(null, @apmCache.loadOutdated.value)
+
+    args = ['outdated', '--json']
+    version = atom.getVersion()
+    args.push('--compatible', version) if semver.valid(version)
+    errorMessage = 'Fetching outdated packages and themes failed.'
+
+    apmProcess = @runCommand args, (code, stdout, stderr) =>
+      if code is 0
+        try
+          packages = JSON.parse(stdout) ? []
+        catch parseError
+          error = createJsonParseError(errorMessage, parseError, stdout)
+          return callback(error)
+
+        updatablePackages = (pack for pack in packages when not @getVersionPinnedPackages().includes(pack?.name))
+
+        @apmCache.loadOutdated =
+          value: updatablePackages
+          expiry: Date.now() + @CACHE_EXPIRY
+
+        for pack in updatablePackages
+          @emitPackageEvent 'update-available', pack
+
+        callback(null, updatablePackages)
+      else
+        error = new Error(errorMessage)
+        error.stdout = stdout
+        error.stderr = stderr
+        callback(error)
+
+    handleProcessErrors(apmProcess, errorMessage, callback)
+
+  getVersionPinnedPackages: ->
+    atom.config.get('core.versionPinnedPackages') ? []
+
+  clearOutdatedCache: ->
+    @apmCache.loadOutdated =
+      value: null
+      expiry: 0
+
+  loadPackage: (packageName, callback) ->
+    args = ['view', packageName, '--json']
+    errorMessage = "Fetching package '#{packageName}' failed."
+
+    apmProcess = @runCommand args, (code, stdout, stderr) ->
+      if code is 0
+        try
+          packages = JSON.parse(stdout) ? []
+        catch parseError
+          error = createJsonParseError(errorMessage, parseError, stdout)
+          return callback(error)
+
+        callback(null, packages)
+      else
+        error = new Error(errorMessage)
+        error.stdout = stdout
+        error.stderr = stderr
+        callback(error)
+
+    handleProcessErrors(apmProcess, errorMessage, callback)
+
+  loadCompatiblePackageVersion: (packageName, callback) ->
+    args = ['view', packageName, '--json', '--compatible', @normalizeVersion(atom.getVersion())]
+    errorMessage = "Fetching package '#{packageName}' failed."
+
+    apmProcess = @runCommand args, (code, stdout, stderr) ->
+      if code is 0
+        try
+          packages = JSON.parse(stdout) ? []
+        catch parseError
+          error = createJsonParseError(errorMessage, parseError, stdout)
+          return callback(error)
+
+        callback(null, packages)
+      else
+        error = new Error(errorMessage)
+        error.stdout = stdout
+        error.stderr = stderr
+        callback(error)
+
+    handleProcessErrors(apmProcess, errorMessage, callback)
+
+  getInstalled: ->
+    new Promise (resolve, reject) =>
+      @loadInstalled (error, result) ->
+        if error
+          reject(error)
+        else
+          resolve(result)
+
+  getFeatured: (loadThemes) ->
+    new Promise (resolve, reject) =>
+      @loadFeatured !!loadThemes, (error, result) ->
+        if error
+          reject(error)
+        else
+          resolve(result)
+
+  getOutdated: (clearCache = false) ->
+    new Promise (resolve, reject) =>
+      @loadOutdated clearCache, (error, result) ->
+        if error
+          reject(error)
+        else
+          resolve(result)
+
+  getPackage: (packageName) ->
+    @packagePromises[packageName] ?= new Promise (resolve, reject) =>
+      @loadPackage packageName, (error, result) ->
+        if error
+          reject(error)
+        else
+          resolve(result)
+
+  satisfiesVersion: (version, metadata) ->
+    engine = metadata.engines?.atom ? '*'
+    return false unless semver.validRange(engine)
+    return semver.satisfies(version, engine)
+
+  normalizeVersion: (version) ->
+    [version] = version.split('-') if typeof version is 'string'
+    version
+
+  update: (pack, newVersion, callback) ->
+    {name, theme, apmInstallSource} = pack
+
+    errorMessage = if newVersion
+      "Updating to \u201C#{name}@#{newVersion}\u201D failed."
+    else
+      "Updating to latest sha failed."
+    onError = (error) =>
+      error.packageInstallError = not theme
+      @emitPackageEvent 'update-failed', pack, error
+      callback?(error)
+
+    if apmInstallSource?.type is 'git'
+      args = ['install', apmInstallSource.source]
+    else
+      args = ['install', "#{name}@#{newVersion}"]
+
+    exit = (code, stdout, stderr) =>
+      if code is 0
+        @clearOutdatedCache()
+        callback?()
+        @emitPackageEvent 'updated', pack
+      else
+        error = new Error(errorMessage)
+        error.stdout = stdout
+        error.stderr = stderr
+        onError(error)
+
+    @emitPackageEvent 'updating', pack
+    apmProcess = @runCommand(args, exit)
+    handleProcessErrors(apmProcess, errorMessage, onError)
+
+  unload: (name) ->
+    if atom.packages.isPackageLoaded(name)
+      atom.packages.deactivatePackage(name) if atom.packages.isPackageActive(name)
+      atom.packages.unloadPackage(name)
+
+  install: (pack, callback) ->
+    {name, version, theme} = pack
+    activateOnSuccess = not theme and not atom.packages.isPackageDisabled(name)
+    activateOnFailure = atom.packages.isPackageActive(name)
+    nameWithVersion = if version? then "#{name}@#{version}" else name
+
+    @unload(name)
+    args = ['install', nameWithVersion, '--json']
+
+    errorMessage = "Installing \u201C#{nameWithVersion}\u201D failed."
+    onError = (error) =>
+      error.packageInstallError = not theme
+      @emitPackageEvent 'install-failed', pack, error
+      callback?(error)
+
+    exit = (code, stdout, stderr) =>
+      if code is 0
+        # get real package name from package.json
+        try
+          packageInfo = JSON.parse(stdout)[0]
+          pack = _.extend({}, pack, packageInfo.metadata)
+          name = pack.name
+        catch err
+          # using old apm without --json support
+        @clearOutdatedCache()
+        if activateOnSuccess
+          atom.packages.activatePackage(name)
+        else
+          atom.packages.loadPackage(name)
+
+        callback?()
+        @emitPackageEvent 'installed', pack
+      else
+        atom.packages.activatePackage(name) if activateOnFailure
+        error = new Error(errorMessage)
+        error.stdout = stdout
+        error.stderr = stderr
+        onError(error)
+
+    @emitPackageEvent('installing', pack)
+    apmProcess = @runCommand(args, exit)
+    handleProcessErrors(apmProcess, errorMessage, onError)
+
+  uninstall: (pack, callback) ->
+    {name} = pack
+
+    atom.packages.deactivatePackage(name) if atom.packages.isPackageActive(name)
+
+    errorMessage = "Uninstalling \u201C#{name}\u201D failed."
+    onError = (error) =>
+      @emitPackageEvent 'uninstall-failed', pack, error
+      callback?(error)
+
+    @emitPackageEvent('uninstalling', pack)
+    apmProcess = @runCommand ['uninstall', '--hard', name], (code, stdout, stderr) =>
+      if code is 0
+        @clearOutdatedCache()
+        @unload(name)
+        @removePackageNameFromDisabledPackages(name)
+        callback?()
+        @emitPackageEvent 'uninstalled', pack
+      else
+        error = new Error(errorMessage)
+        error.stdout = stdout
+        error.stderr = stderr
+        onError(error)
+
+    handleProcessErrors(apmProcess, errorMessage, onError)
+
+  canUpgrade: (installedPackage, availableVersion) ->
+    return false unless installedPackage?
+
+    installedVersion = installedPackage.metadata.version
+    return false unless semver.valid(installedVersion)
+    return false unless semver.valid(availableVersion)
+
+    semver.gt(availableVersion, installedVersion)
+
+  getPackageTitle: ({name}) ->
+    _.undasherize(_.uncamelcase(name))
+
+  getRepositoryUrl: ({metadata}) ->
+    {repository} = metadata
+    repoUrl = repository?.url ? repository ? ''
+    if repoUrl.match 'git@github'
+      repoName = repoUrl.split(':')[1]
+      repoUrl = "https://github.com/#{repoName}"
+    repoUrl.replace(/\.git$/, '').replace(/\/+$/, '').replace(/^git\+/, '')
+
+  getRepositoryBugUri: ({metadata}) ->
+    {bugs} = metadata
+    if typeof bugs is 'string'
+      bugUri = bugs
+    else
+      bugUri = bugs?.url ? bugs?.email ? this.getRepositoryUrl({metadata}) + '/issues/new'
+      if bugUri.includes('@')
+        bugUri = 'mailto:' + bugUri
+    bugUri
+
+  checkNativeBuildTools: ->
+    new Promise (resolve, reject) =>
+      apmProcess = @runCommand ['install', '--check'], (code, stdout, stderr) ->
+        if code is 0
+          resolve()
+        else
+          reject(new Error())
+
+      apmProcess.onWillThrowError ({error, handle}) ->
+        handle()
+        reject(error)
+
+  removePackageNameFromDisabledPackages: (packageName) ->
+    atom.config.removeAtKeyPath('core.disabledPackages', packageName)
+
+  # Emits the appropriate event for the given package.
+  #
+  # All events are either of the form `theme-foo` or `package-foo` depending on
+  # whether the event is for a theme or a normal package. This method standardizes
+  # the logic to determine if a package is a theme or not and formats the event
+  # name appropriately.
+  #
+  # eventName - The event name suffix {String} of the event to emit.
+  # pack - The package for which the event is being emitted.
+  # error - Any error information to be included in the case of an error.
+  emitPackageEvent: (eventName, pack, error) ->
+    theme = pack.theme ? pack.metadata?.theme
+    eventName = if theme then "theme-#{eventName}" else "package-#{eventName}"
+    @emitter.emit(eventName, {pack, error})
+
+  on: (selectors, callback) ->
+    subscriptions = new CompositeDisposable
+    for selector in selectors.split(" ")
+      subscriptions.add @emitter.on(selector, callback)
+    subscriptions
+
+createJsonParseError = (message, parseError, stdout) ->
+  error = new Error(message)
+  error.stdout = ''
+  error.stderr = "#{parseError.message}: #{stdout}"
+  error
+
+createProcessError = (message, processError) ->
+  error = new Error(message)
+  error.stdout = ''
+  error.stderr = processError.message
+  error
+
+handleProcessErrors = (apmProcess, message, callback) ->
+  apmProcess.onWillThrowError ({error, handle}) ->
+    handle()
+    callback(createProcessError(message, error))
diff --git a/packages/settings-view/lib/package-readme-view.js b/packages/settings-view/lib/package-readme-view.js
new file mode 100644
index 000000000..c05592173
--- /dev/null
+++ b/packages/settings-view/lib/package-readme-view.js
@@ -0,0 +1,84 @@
+/** @babel */
+
+import {marked} from 'marked'
+import createDOMPurify from 'dompurify'
+
+function sanitize (html, readmeSrc) {
+  const temporaryContainer = document.createElement('div')
+  temporaryContainer.innerHTML = html
+
+  for (const checkbox of temporaryContainer.querySelectorAll('input[type="checkbox"]')) {
+    checkbox.setAttribute('disabled', '')
+  }
+
+  let path = require('path')
+
+  for (const image of temporaryContainer.querySelectorAll('img')) {
+    let imageSrc = image.getAttribute('src')
+
+    let changeImageSrc = true
+
+    // If src contains a protocol then it must be absolute
+    if (/^(?:[a-z]+:)?\/\//i.test(imageSrc)) {
+      changeImageSrc = false
+    }
+
+    // If src contains a base64 encoded image it must be left unchanged
+    if (/^data:image\/.*;base64/i.test(imageSrc)) {
+      changeImageSrc = false
+    }
+
+    // If path is absolute on file system it must be a local file, e.g. emoji
+    if (path.isAbsolute(imageSrc)) {
+      changeImageSrc = false
+    }
+
+    // If imageSrc needs changing and readmeSrc isn't undefined (i.e. if package was unpublished)
+    if (changeImageSrc && readmeSrc) {
+      if (path.isAbsolute(readmeSrc)) {
+        // If repoUrl is a local path (i.e. package is installed)
+        image.setAttribute('src', path.join(readmeSrc, imageSrc))
+      } else {
+        // If repoUrl is a URL (i.e. package isn't installed)
+        image.setAttribute('src', new URL(imageSrc, readmeSrc))
+      }
+    }
+  }
+
+  return createDOMPurify().sanitize(temporaryContainer.innerHTML)
+}
+
+// Displays the readme for a package, if it has one
+// TODO Decide to keep this or current button-to-new-tab view
+export default class PackageReadmeView {
+  constructor (readme, readmeSrc) {
+    this.element = document.createElement('section')
+    this.element.classList.add('section')
+
+    const container = document.createElement('div')
+    container.classList.add('section-container')
+
+    const heading = document.createElement('div')
+    heading.classList.add('section-heading', 'icon', 'icon-book')
+    heading.textContent = 'README'
+    container.appendChild(heading)
+
+    this.packageReadme = document.createElement('div')
+    this.packageReadme.classList.add('package-readme', 'native-key-bindings')
+    this.packageReadme.tabIndex = -1
+    container.appendChild(this.packageReadme)
+    this.element.appendChild(container)
+
+    marked(readme || '### No README.', {breaks: false}, (err, content) => {
+      if (err) {
+        this.packageReadme.innerHTML = '<h3>Error parsing README</h3>'
+      } else {
+        this.packageReadme.innerHTML = sanitize(content, readmeSrc)
+      }
+    })
+  }
+
+  destroy () {
+    this.element.remove()
+  }
+}
diff --git a/packages/settings-view/lib/package-snippets-view.js b/packages/settings-view/lib/package-snippets-view.js
new file mode 100644
index 000000000..dbcff206e
--- /dev/null
+++ b/packages/settings-view/lib/package-snippets-view.js
@@ -0,0 +1,236 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import path from 'path'
+import _ from 'underscore-plus'
+import etch from 'etch'
+import {CompositeDisposable, Disposable} from 'atom'
+
+// View to display the snippets that a package has registered.
+export default class PackageSnippetsView {
+  constructor (pack, snippetsProvider) {
+    this.pack = pack
+    this.namespace = this.pack.name
+    this.snippetsProvider = snippetsProvider
+    this.packagePath = path.join(pack.path, path.sep)
+    etch.initialize(this)
+    this.disposables = new CompositeDisposable()
+    this.updateSnippetsView()
+
+    const packagesWithSnippetsDisabled = atom.config.get('core.packagesWithSnippetsDisabled') || []
+    this.refs.snippetToggle.checked = !packagesWithSnippetsDisabled.includes(this.namespace)
+
+    const changeHandler = (event) => {
+      event.stopPropagation()
+      const value = this.refs.snippetToggle.checked
+      if (value) {
+        atom.config.removeAtKeyPath('core.packagesWithSnippetsDisabled', this.namespace)
+      } else {
+        atom.config.pushAtKeyPath('core.packagesWithSnippetsDisabled', this.namespace)
+      }
+      this.updateSnippetsView()
+    }
+
+    this.refs.snippetToggle.addEventListener('change', changeHandler)
+    this.disposables.add(new Disposable(() => { this.refs.snippetToggle.removeEventListener('change', changeHandler) }))
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  render () {
+    return (
+      <section className='section'>
+        <div className='section-heading icon icon-code'>Snippets</div>
+        <div className='checkbox'>
+          <label for='toggleSnippets'>
+            <input id='toggleSnippets' className='input-checkbox' type='checkbox' ref='snippetToggle' />
+            <div className='setting-title'>Enable</div>
+          </label>
+          <div className='setting-description'>
+            {'Disable this if you want to prevent this package’s snippets from appearing as suggestions or if you want to customize them in your snippets file.'}
+          </div>
+        </div>
+
+        <table className='package-snippets-table table native-key-bindings text' tabIndex={-1}>
+          <thead>
+            <tr>
+              <th>Trigger</th>
+              <th>Name</th>
+              <th>Scope</th>
+              <th>Body</th>
+            </tr>
+          </thead>
+          <tbody ref='snippets' />
+        </table>
+      </section>
+    )
+  }
+
+  getSnippetProperties () {
+    const packageProperties = {}
+    for (const {name, properties, selectorString} of this.snippetsProvider.getSnippets()) {
+      if (name && name.indexOf && name.indexOf(this.packagePath) === 0) {
+        const object = properties.snippets != null ? properties.snippets : {}
+        for (let key in object) {
+          const snippet = object[key]
+          if (snippet != null) {
+            snippet.selectorString = selectorString
+            if (packageProperties[key] == null) {
+              packageProperties[key] = snippet
+            }
+          }
+        }
+      }
+    }
+
+    return _.values(packageProperties).sort((snippet1, snippet2) => {
+      const prefix1 = snippet1.prefix != null ? snippet1.prefix : ''
+      const prefix2 = snippet2.prefix != null ? snippet2.prefix : ''
+      return prefix1.localeCompare(prefix2)
+    })
+  }
+
+  getSnippets (callback) {
+    const snippetsPackage = atom.packages.getLoadedPackage('snippets')
+    const snippetsModule = snippetsPackage ? snippetsPackage.mainModule : null
+    if (snippetsModule) {
+      if (snippetsModule.loaded) {
+        callback(this.getSnippetProperties())
+      } else {
+        snippetsModule.onDidLoadSnippets(() => callback(this.getSnippetProperties()))
+      }
+    } else {
+      callback([]) // eslint-disable-line standard/no-callback-literal
+    }
+  }
+
+  updateSnippetsView () {
+    const packagesWithSnippetsDisabled = atom.config.get('core.packagesWithSnippetsDisabled') || []
+    const snippetsDisabled = packagesWithSnippetsDisabled.includes(this.namespace)
+
+    this.getSnippets((snippets) => {
+      this.refs.snippets.innerHTML = ''
+
+      if (snippetsDisabled) {
+        this.refs.snippets.classList.add('text-subtle')
+      } else {
+        this.refs.snippets.classList.remove('text-subtle')
+      }
+
+      for (let {body, bodyText, name, prefix, selectorString} of snippets) {
+        if (name == null) {
+          name = ''
+        }
+
+        if (prefix == null) {
+          prefix = ''
+        }
+
+        if (body == null) {
+          body = bodyText || ''
+        }
+
+        if (selectorString == null) {
+          selectorString = ''
+        }
+
+        const row = document.createElement('tr')
+
+        const prefixTd = document.createElement('td')
+        prefixTd.classList.add('snippet-prefix')
+        prefixTd.textContent = prefix
+        row.appendChild(prefixTd)
+
+        const nameTd = document.createElement('td')
+        nameTd.textContent = name
+        row.appendChild(nameTd)
+
+        const scopeTd = document.createElement('td')
+        scopeTd.classList.add('snippet-scope-name')
+        scopeTd.textContent = selectorString
+        row.appendChild(scopeTd)
+
+        const bodyTd = document.createElement('td')
+        bodyTd.classList.add('snippet-body')
+        row.appendChild(bodyTd)
+
+        this.refs.snippets.appendChild(row)
+        this.createButtonsForSnippetRow(bodyTd, {body, prefix, scope: selectorString, name})
+      }
+
+      if (this.refs.snippets.children.length > 0) {
+        this.element.style.display = ''
+      } else {
+        this.element.style.display = 'none'
+      }
+    })
+  }
+
+  createButtonsForSnippetRow (td, {scope, body, name, prefix}) {
+    let buttonContainer = document.createElement('div')
+    buttonContainer.classList.add('btn-group', 'btn-group-xs')
+
+    let viewButton = document.createElement('button')
+    let copyButton = document.createElement('button')
+
+    viewButton.setAttribute('type', 'button')
+    viewButton.textContent = 'View'
+    viewButton.classList.add('btn', 'snippet-view-btn')
+
+    let tooltip = atom.tooltips.add(viewButton, {
+      title: body,
+      html: false,
+      trigger: 'click',
+      placement: 'auto left',
+      'class': 'snippet-body-tooltip'
+    })
+
+    this.disposables.add(tooltip)
+
+    copyButton.setAttribute('type', 'button')
+    copyButton.textContent = 'Copy'
+    copyButton.classList.add('btn', 'snippet-copy-btn')
+
+    copyButton.addEventListener('click', (event) => {
+      event.preventDefault()
+      return this.writeSnippetToClipboard({scope, body, name, prefix})
+    })
+
+    buttonContainer.appendChild(viewButton)
+    buttonContainer.appendChild(copyButton)
+
+    td.appendChild(buttonContainer)
+  }
+
+  writeSnippetToClipboard ({scope, body, name, prefix}) {
+    let content
+    const extension = path.extname(this.snippetsProvider.getUserSnippetsPath())
+    body = body.replace(/\n/g, '\\n').replace(/\t/g, '\\t')
+    if (extension === '.cson') {
+      body = body.replace(/'/g, `\\'`)
+      content = `
+'${scope}':
+  '${name}':
+    'prefix': '${prefix}'
+    'body': '${body}'
+`
+    } else {
+      body = body.replace(/"/g, `\\"`)
+      content = `
+  "${scope}": {
+    "${name}": {
+      "prefix": "${prefix}",
+      "body": "${body}"
+    }
+  }
+`
+    }
+
+    atom.clipboard.write(content)
+  }
+}
diff --git a/packages/settings-view/lib/package-updates-status-view.js b/packages/settings-view/lib/package-updates-status-view.js
new file mode 100644
index 000000000..fa72cfda6
--- /dev/null
+++ b/packages/settings-view/lib/package-updates-status-view.js
@@ -0,0 +1,156 @@
+/** @babel */
+
+import _ from 'underscore-plus'
+import {CompositeDisposable, Disposable} from 'atom'
+
+export default class PackageUpdatesStatusView {
+  initialize (statusBar, packageManager, updates) {
+    this.statusBar = statusBar
+    this.updates = updates
+    this.destroyed = true
+    this.updatingPackages = []
+    this.failedUpdates = []
+    this.disposables = new CompositeDisposable()
+
+    this.element = document.createElement('div')
+    this.element.classList.add('package-updates-status-view', 'inline-block', 'text', 'text-info')
+
+    const iconPackage = document.createElement('span')
+    iconPackage.classList.add('icon', 'icon-package')
+    this.element.appendChild(iconPackage)
+
+    this.countLabel = document.createElement('span')
+    this.countLabel.classList.add('available-updates-status')
+    this.element.appendChild(this.countLabel)
+
+    this.disposables.add(packageManager.on('package-update-available theme-update-available', ({pack, error}) => { this.onPackageUpdateAvailable(pack) }))
+    this.disposables.add(packageManager.on('package-updating theme-updating', ({pack, error}) => { this.onPackageUpdating(pack) }))
+    this.disposables.add(packageManager.on('package-updated theme-updated package-uninstalled theme-uninstalled', ({pack, error}) => { this.onPackageUpdated(pack) }))
+    this.disposables.add(packageManager.on('package-update-failed theme-update-failed', ({pack, error}) => { this.onPackageUpdateFailed(pack) }))
+
+    const clickHandler = () => {
+      atom.commands.dispatch(atom.views.getView(atom.workspace), 'settings-view:check-for-package-updates')
+    }
+    this.element.addEventListener('click', clickHandler)
+    this.disposables.add(new Disposable(() => { this.element.removeEventListener('click', clickHandler) }))
+
+    this.updateTile()
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    this.element.remove()
+
+    if (this.tile) {
+      this.tile.destroy()
+      this.tile = null
+    }
+
+    if (this.tooltip) {
+      this.tooltip.dispose()
+      this.tooltip = null
+    }
+  }
+
+  onPackageUpdateAvailable (pack) {
+    for (const update of this.updates) {
+      if (update.name === pack.name) {
+        return
+      }
+    }
+
+    this.updates.push(pack)
+    this.updateTile()
+  }
+
+  onPackageUpdating (pack) {
+    // Wipe failed status when an update is retried
+    for (let index = 0; index < this.failedUpdates.length; index++) {
+      const update = this.failedUpdates[index]
+      if (update.name === pack.name) {
+        this.failedUpdates.splice(index, 1)
+      }
+    }
+
+    this.updatingPackages.push(pack)
+    this.updateTile()
+  }
+
+  onPackageUpdated (pack) {
+    for (let index = 0; index < this.updates.length; index++) {
+      const update = this.updates[index]
+      if (update.name === pack.name) {
+        this.updates.splice(index, 1)
+      }
+    }
+
+    for (let index = 0; index < this.updatingPackages.length; index++) {
+      const update = this.updatingPackages[index]
+      if (update.name === pack.name) {
+        this.updatingPackages.splice(index, 1)
+      }
+    }
+
+    for (let index = 0; index < this.failedUpdates.length; index++) {
+      const update = this.failedUpdates[index]
+      if (update.name === pack.name) {
+        this.failedUpdates.splice(index, 1)
+      }
+    }
+
+    this.updateTile()
+  }
+
+  onPackageUpdateFailed (pack) {
+    for (const update of this.failedUpdates) {
+      if (update.name === pack.name) {
+        return
+      }
+    }
+
+    for (let index = 0; index < this.updatingPackages.length; index++) {
+      const update = this.updatingPackages[index]
+      if (update.name === pack.name) {
+        this.updatingPackages.splice(index, 1)
+      }
+    }
+
+    this.failedUpdates.push(pack)
+    this.updateTile()
+  }
+
+  updateTile () {
+    if (this.updates.length) {
+      if (this.tooltip) {
+        this.tooltip.dispose()
+        this.tooltip = null
+      }
+
+      if (this.destroyed) {
+        // Priority of -99 should put us just to the left of the Squirrel icon, which displays when Atom has updates available
+        this.tile = this.statusBar.addRightTile({item: this, priority: -99})
+        this.destroyed = false
+      }
+
+      let labelText = `${_.pluralize(this.updates.length, 'update')}` // 5 updates
+      let tooltipText = `${_.pluralize(this.updates.length, 'package update')} available`
+
+      if (this.updatingPackages.length) {
+        labelText = `${this.updatingPackages.length}/${this.updates.length} updating` // 3/5 updating
+        tooltipText += `, ${_.pluralize(this.updatingPackages.length, 'package')} currently updating`
+      }
+
+      if (this.failedUpdates.length) {
+        labelText += ` (${this.failedUpdates.length} failed)` // 1 update (1 failed), or 3/5 updating (1 failed)
+        tooltipText += `, ${_.pluralize(this.failedUpdates.length, 'failed update')}`
+      }
+
+      this.countLabel.textContent = labelText
+      this.tooltip = atom.tooltips.add(this.element, {title: tooltipText})
+    } else if (!this.destroyed) {
+      this.tile.destroy()
+      this.tile = null
+      this.destroyed = true
+    }
+  }
+}
diff --git a/packages/settings-view/lib/rich-description.js b/packages/settings-view/lib/rich-description.js
new file mode 100644
index 000000000..f246fbd1b
--- /dev/null
+++ b/packages/settings-view/lib/rich-description.js
@@ -0,0 +1,28 @@
+const {marked} = require('marked')
+
+const renderer = new marked.Renderer()
+renderer.code = () => ''
+renderer.blockquote = () => ''
+renderer.heading = () => ''
+renderer.html = (src) => {
+  const match = src.match(/<br\s*\/?>/)
+  if (match) {
+    return `<br/>`
+  }
+  return ''
+}
+renderer.image = () => ''
+renderer.list = () => ''
+
+const markdown = text => marked(text, {renderer, breaks: true}).replace(/<p>(.*)<\/p>/, '$1').trim()
+
+module.exports = {
+  getSettingDescription (keyPath) {
+    const schema = atom.config.getSchema(keyPath)
+    let description = ''
+    if (schema && schema.description) {
+      description = schema.description
+    }
+    return markdown(description)
+  }
+}
diff --git a/packages/settings-view/lib/settings-panel.js b/packages/settings-view/lib/settings-panel.js
new file mode 100644
index 000000000..ad33fe12d
--- /dev/null
+++ b/packages/settings-view/lib/settings-panel.js
@@ -0,0 +1,669 @@
+/** @babel */
+
+import {CompositeDisposable, Disposable, TextEditor} from 'atom'
+import _ from 'underscore-plus'
+import CollapsibleSectionPanel from './collapsible-section-panel'
+import {getSettingDescription} from './rich-description'
+
+const SCOPED_SETTINGS = [
+  'autoIndent',
+  'autoIndentOnPaste',
+  'invisibles',
+  'nonWordCharacters',
+  'preferredLineLength',
+  'scrollPastEnd',
+  'showIndentGuide',
+  'showInvisibles',
+  'softWrap',
+  'softWrapAtPreferredLineLength',
+  'softWrapHangingIndent',
+  'tabLength',
+  'tabType'
+]
+
+export default class SettingsPanel extends CollapsibleSectionPanel {
+  constructor (options = {}) {
+    super()
+    let namespace = options.namespace
+    this.element = document.createElement('section')
+    this.element.classList.add('section', 'settings-panel')
+    this.options = options
+    this.disposables = new CompositeDisposable()
+    let settings
+    if (this.options.scopeName) {
+      namespace = 'editor'
+      settings = {}
+      for (const name of SCOPED_SETTINGS) {
+        settings[name] = atom.config.get(name, {scope: [this.options.scopeName]})
+      }
+    } else {
+      settings = atom.config.get(namespace)
+    }
+
+    this.element.appendChild(this.elementForSettings(namespace, settings))
+
+    this.disposables.add(this.bindInputFields())
+    this.disposables.add(this.bindSelectFields())
+    this.disposables.add(this.bindEditors())
+    this.disposables.add(this.bindTooltips())
+    this.disposables.add(this.handleEvents())
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    this.element.remove()
+  }
+
+  elementForSettings (namespace, settings) {
+    if (_.isEmpty(settings)) {
+      return document.createDocumentFragment()
+    }
+
+    let {title} = this.options
+    const includeTitle = this.options.includeTitle != null ? this.options.includeTitle : true
+    if (includeTitle) {
+      if (title == null) {
+        title = `${_.undasherize(_.uncamelcase(namespace))} Settings`
+      }
+    } else {
+      if (title == null) {
+        title = 'Settings'
+      }
+    }
+
+    const icon = this.options.icon != null ? this.options.icon : 'gear'
+    const {note} = this.options
+    const sortedSettings = this.sortSettings(namespace, settings)
+
+    const container = document.createElement('div')
+    container.classList.add('section-container')
+
+    const heading = document.createElement('div')
+    heading.classList.add('block', 'section-heading', 'icon', `icon-${icon}`)
+    heading.textContent = title
+    container.appendChild(heading)
+
+    if (note) {
+      container.insertAdjacentHTML('beforeend', note)
+    }
+
+    const body = document.createElement('div')
+    body.classList.add('section-body')
+    for (const name of sortedSettings) {
+      body.appendChild(elementForSetting(namespace, name, settings[name]))
+    }
+    container.appendChild(body)
+
+    return container
+  }
+
+  sortSettings (namespace, settings) {
+    return sortSettings(namespace, settings)
+  }
+
+  bindInputFields () {
+    const disposables = Array.from(this.element.querySelectorAll('input[id]')).map((input) => {
+      let type = input.type
+      let name = type === 'radio' ? input.name : input.id
+
+      this.observe(name, (value) => {
+        if (type === 'checkbox') {
+          input.checked = value
+        } else if (type === 'radio') {
+          input.checked = (value === this.parseValue(atom.config.getSchema(name).type, input.value))
+        } else {
+          if (type === 'color') {
+            if (value && value.toHexString && value.toHexString()) {
+              value = value.toHexString()
+            }
+          }
+
+          if (value) {
+            input.value = value
+          }
+        }
+      })
+
+      const changeHandler = () => {
+        let value = input.value
+        if (type === 'checkbox') {
+          value = input.checked
+        } else if (type === 'radio') {
+          value = this.parseValue(atom.config.getSchema(name).type, value)
+        } else {
+          value = this.parseValue(type, value)
+        }
+
+        if (type === 'color') {
+          // This is debounced since the color wheel fires lots of events
+          // as you are dragging it around
+          clearTimeout(this.colorDebounceTimeout)
+          this.colorDebounceTimeout = setTimeout(() => { this.set(name, value) }, 100)
+        } else {
+          this.set(name, value)
+        }
+      }
+
+      input.addEventListener('change', changeHandler)
+      return new Disposable(() => input.removeEventListener('change', changeHandler))
+    })
+
+    return new CompositeDisposable(...disposables)
+  }
+
+  observe (name, callback) {
+    let params = {sources: [atom.config.getUserConfigPath()]}
+    if (this.options.scopeName != null) {
+      params.scope = [this.options.scopeName]
+    }
+    this.disposables.add(atom.config.observe(name, params, callback))
+  }
+
+  isDefault (name) {
+    let params = {sources: [atom.config.getUserConfigPath()]}
+    if (this.options.scopeName != null) {
+      params.scope = [this.options.scopeName]
+    }
+    let defaultValue = this.getDefault(name)
+    let value = atom.config.get(name, params)
+    return (value == null) || (defaultValue === value)
+  }
+
+  getDefault (name) {
+    let params = {excludeSources: [atom.config.getUserConfigPath()]}
+    if (this.options.scopeName != null) {
+      params.scope = [this.options.scopeName]
+    }
+
+    let defaultValue = atom.config.get(name, params)
+    if (this.options.scopeName != null) {
+      // If the unscoped default is the same as the scoped default, check the actual config.cson
+      // to make sure that there isn't a non-default value that is overriding the scoped value
+      // For example: the default editor.tabLength is 2, but if someone sets it to 4
+      // the above check still returns 2 and not 4 for a scoped editor.tabLength,
+      // because it bypasses config.cson.
+      if (atom.config.get(name, {excludeSources: [atom.config.getUserConfigPath()]}) === defaultValue) {
+        defaultValue = atom.config.get(name)
+      }
+    }
+    return defaultValue
+  }
+
+  set (name, value) {
+    if (this.options.scopeName) {
+      if (value === undefined) {
+        atom.config.unset(name, {scopeSelector: this.options.scopeName})
+        return true
+      } else {
+        return atom.config.set(name, value, {scopeSelector: this.options.scopeName})
+      }
+    } else {
+      return atom.config.set(name, value)
+    }
+  }
+
+  setText (editor, name, type, value) {
+    let stringValue
+    if (this.isDefault(name)) {
+      stringValue = ''
+    } else {
+      stringValue = this.valueToString(value) || ''
+    }
+
+    if (stringValue === editor.getText() || _.isEqual(value, this.parseValue(type, editor.getText()))) {
+      return
+    }
+
+    editor.setText(stringValue)
+    editor.moveToEndOfLine()
+  }
+
+  bindSelectFields () {
+    const disposables = Array.from(this.element.querySelectorAll('select[id]')).map((select) => {
+      const name = select.id
+      this.observe(name, value => { select.value = value })
+      const changeHandler = () => {
+        this.set(name, select.value)
+      }
+      select.addEventListener('change', changeHandler)
+      return new Disposable(() => select.removeEventListener('change', changeHandler))
+    })
+
+    return new CompositeDisposable(...disposables)
+  }
+
+  bindEditors () {
+    const disposables = Array.from(this.element.querySelectorAll('atom-text-editor')).map((editorElement) => {
+      let editor = editorElement.getModel()
+      let name = editorElement.id
+      let type = editorElement.getAttribute('type')
+      let defaultValue = this.valueToString(this.getDefault(name))
+
+      if (defaultValue != null) {
+        editor.setPlaceholderText(`Default: ${defaultValue}`)
+      }
+
+      const subscriptions = new CompositeDisposable()
+
+      const focusHandler = () => {
+        if (this.isDefault(name)) {
+          editor.setText(this.valueToString(this.getDefault(name)) || '')
+        }
+      }
+      editorElement.addEventListener('focus', focusHandler)
+      subscriptions.add(new Disposable(() => editorElement.removeEventListener('focus', focusHandler)))
+
+      const blurHandler = () => {
+        if (this.isDefault(name)) {
+          editor.setText('')
+        }
+      }
+      editorElement.addEventListener('blur', blurHandler)
+      subscriptions.add(new Disposable(() => editorElement.removeEventListener('blur', blurHandler)))
+
+      this.observe(name, (value) => {
+        this.setText(editor, name, type, value)
+      })
+
+      subscriptions.add(editor.onDidStopChanging(() => {
+        const {minimum, maximum} = atom.config.getSchema(name)
+        const value = this.parseValue(type, editor.getText())
+        if (minimum != null && value < minimum) {
+          this.set(name, minimum)
+          this.setText(editor, name, type, minimum)
+        } else if (maximum != null && value > maximum) {
+          this.set(name, maximum)
+          this.setText(editor, name, type, maximum)
+        } else if (!this.set(name, value)) {
+          this.setText(editor, name, type, atom.config.get(name))
+        }
+      }))
+
+      return subscriptions
+    })
+
+    return new CompositeDisposable(...disposables)
+  }
+
+  bindTooltips () {
+    const disposables = Array.from(this.element.querySelectorAll('input[id], select[id], atom-text-editor[id]')).map((element) => {
+      const schema = atom.config.getSchema(element.id)
+      let defaultValue = this.valueToString(this.getDefault(element.id))
+      if (defaultValue != null) {
+        if (schema.enum && _.findWhere(schema.enum, {value: defaultValue})) {
+          defaultValue = _.findWhere(schema.enum, {value: defaultValue}).description
+        }
+        return atom.tooltips.add(element, {
+          title: `Default: ${defaultValue}`,
+          delay: {show: 100},
+          placement: 'auto left'
+        })
+      } else {
+        return new Disposable(() => {}) // no-op
+      }
+    })
+
+    return new CompositeDisposable(...disposables)
+  }
+
+  valueToString (value) {
+    if (Array.isArray(value)) {
+      if (value.length === 0) {
+        return null
+      }
+      return value.map((val) => val.toString().replace(/,/g, '\\,')).join(', ')
+    } else if (value != null) {
+      return value.toString()
+    } else {
+      return null
+    }
+  }
+
+  parseValue (type, value) {
+    if (value === '') {
+      return undefined
+    } else if (type === 'number') {
+      let floatValue = parseFloat(value)
+      if (isNaN(floatValue)) {
+        return value
+      } else {
+        return floatValue
+      }
+    } else if (type === 'integer') {
+      let intValue = parseInt(value)
+      if (isNaN(intValue)) {
+        return value
+      } else {
+        return intValue
+      }
+    } else if (type === 'array') {
+      let arrayValue = (value || '').split(',')
+      arrayValue = arrayValue.reduce((values, val) => {
+        const last = values.length - 1
+        if (last >= 0 && values[last].endsWith('\\')) {
+          values[last] = values[last].replace(/\\$/, ',') + val
+        } else {
+          values.push(val)
+        }
+        return values
+      }, [])
+      return arrayValue.filter((val) => val).map((val) => val.trim())
+    } else {
+      return value
+    }
+  }
+}
+
+/*
+ * Space Pen Helpers
+ */
+
+let isEditableArray = function (array) {
+  for (let item of array) {
+    if (!_.isString(item)) {
+      return false
+    }
+  }
+  return true
+}
+
+function sortSettings (namespace, settings) {
+  return _.chain(settings)
+    .keys()
+    .sortBy((name) => name)
+    .sortBy((name) => {
+      const schema = atom.config.getSchema(`${namespace}.${name}`)
+      return schema ? schema.order : null
+    })
+    .value()
+}
+
+function elementForSetting (namespace, name, value) {
+  if (namespace === 'core') {
+    if (name === 'themes') { return document.createDocumentFragment() } // Handled in the Themes panel
+    if (name === 'disabledPackages') { return document.createDocumentFragment() } // Handled in the Packages panel
+    if (name === 'customFileTypes') { return document.createDocumentFragment() }
+    if (name === 'uriHandlerRegistration') { return document.createDocumentFragment() } // Handled in the URI Handler panel
+  }
+
+  if (namespace === 'editor') {
+    // There's no global default for these, they are defined by language packages
+    if (['commentStart', 'commentEnd', 'increaseIndentPattern', 'decreaseIndentPattern', 'foldEndPattern'].includes(name)) {
+      return document.createDocumentFragment()
+    }
+  }
+
+  const controlGroup = document.createElement('div')
+  controlGroup.classList.add('control-group')
+
+  const controls = document.createElement('div')
+  controls.classList.add('controls')
+  controlGroup.appendChild(controls)
+
+  let schema = atom.config.getSchema(`${namespace}.${name}`)
+  if (schema && schema.enum) {
+    controls.appendChild(elementForOptions(namespace, name, value, {radio: schema.radio}))
+  } else if (schema && schema.type === 'color') {
+    controls.appendChild(elementForColor(namespace, name, value))
+  } else if (_.isBoolean(value) || (schema && schema.type === 'boolean')) {
+    controls.appendChild(elementForCheckbox(namespace, name, value))
+  } else if (_.isArray(value) || (schema && schema.type === 'array')) {
+    if (isEditableArray(value)) {
+      controls.appendChild(elementForArray(namespace, name, value))
+    }
+  } else if (_.isObject(value) || (schema && schema.type === 'object')) {
+    controls.appendChild(elementForObject(namespace, name, value))
+  } else {
+    controls.appendChild(elementForEditor(namespace, name, value))
+  }
+
+  return controlGroup
+}
+
+function getSettingTitle (keyPath, name) {
+  if (name == null) {
+    name = ''
+  }
+  const schema = atom.config.getSchema(keyPath)
+  const title = schema != null ? schema.title : null
+  return title || _.uncamelcase(name).split('.').map(_.capitalize).join(' ')
+}
+
+function elementForOptions (namespace, name, value, {radio = false}) {
+  let keyPath = `${namespace}.${name}`
+  let schema = atom.config.getSchema(keyPath)
+  let options = (schema && schema.enum) ? schema.enum : []
+
+  const fragment = document.createDocumentFragment()
+
+  const label = document.createElement('label')
+  label.classList.add('control-label')
+
+  const titleDiv = document.createElement('div')
+  titleDiv.classList.add('setting-title')
+  titleDiv.textContent = getSettingTitle(keyPath, name)
+  label.appendChild(titleDiv)
+
+  const descriptionDiv = document.createElement('div')
+  descriptionDiv.classList.add('setting-description')
+  descriptionDiv.innerHTML = getSettingDescription(keyPath)
+  label.appendChild(descriptionDiv)
+
+  fragment.appendChild(label)
+  fragment.appendChild(enumOptions(options, {keyPath, radio}))
+
+  return fragment
+}
+
+function elementForCheckbox (namespace, name, value) {
+  let keyPath = `${namespace}.${name}`
+
+  const div = document.createElement('div')
+  div.classList.add('checkbox')
+
+  const label = document.createElement('label')
+  label.for = keyPath
+
+  const input = document.createElement('input')
+  input.id = keyPath
+  input.type = 'checkbox'
+  input.classList.add('input-checkbox')
+  label.appendChild(input)
+
+  const titleDiv = document.createElement('div')
+  titleDiv.classList.add('setting-title')
+  titleDiv.textContent = getSettingTitle(keyPath, name)
+  label.appendChild(titleDiv)
+  div.appendChild(label)
+
+  const descriptionDiv = document.createElement('div')
+  descriptionDiv.classList.add('setting-description')
+  descriptionDiv.innerHTML = getSettingDescription(keyPath)
+  div.appendChild(descriptionDiv)
+
+  return div
+}
+
+function elementForColor (namespace, name, value) {
+  let keyPath = `${namespace}.${name}`
+
+  const div = document.createElement('div')
+  div.classList.add('color')
+
+  const label = document.createElement('label')
+  label.for = keyPath
+
+  const input = document.createElement('input')
+  input.id = keyPath
+  input.type = 'color'
+  label.appendChild(input)
+
+  const titleDiv = document.createElement('div')
+  titleDiv.classList.add('setting-title')
+  titleDiv.textContent = getSettingTitle(keyPath, name)
+  label.appendChild(titleDiv)
+  div.appendChild(label)
+
+  const descriptionDiv = document.createElement('div')
+  descriptionDiv.classList.add('setting-description')
+  descriptionDiv.innerHTML = getSettingDescription(keyPath)
+  div.appendChild(descriptionDiv)
+
+  return div
+}
+
+function elementForEditor (namespace, name, value) {
+  let keyPath = `${namespace}.${name}`
+  let type = _.isNumber(value) ? 'number' : 'string'
+
+  const fragment = document.createDocumentFragment()
+
+  const label = document.createElement('label')
+  label.classList.add('control-label')
+
+  const titleDiv = document.createElement('div')
+  titleDiv.classList.add('setting-title')
+  titleDiv.textContent = getSettingTitle(keyPath, name)
+  label.appendChild(titleDiv)
+
+  const descriptionDiv = document.createElement('div')
+  descriptionDiv.classList.add('setting-description')
+  descriptionDiv.innerHTML = getSettingDescription(keyPath)
+  label.appendChild(descriptionDiv)
+  fragment.appendChild(label)
+
+  const controls = document.createElement('div')
+  controls.classList.add('controls')
+
+  const editorContainer = document.createElement('div')
+  editorContainer.classList.add('editor-container')
+
+  const editor = new TextEditor({mini: true})
+  editor.element.id = keyPath
+  editor.element.setAttribute('type', type)
+  editorContainer.appendChild(editor.element)
+  controls.appendChild(editorContainer)
+  fragment.appendChild(controls)
+
+  return fragment
+}
+
+function elementForArray (namespace, name, value) {
+  let keyPath = `${namespace}.${name}`
+
+  const fragment = document.createDocumentFragment()
+
+  const label = document.createElement('label')
+  label.classList.add('control-label')
+
+  const titleDiv = document.createElement('div')
+  titleDiv.classList.add('setting-title')
+  titleDiv.textContent = getSettingTitle(keyPath, name)
+  label.appendChild(titleDiv)
+
+  const descriptionDiv = document.createElement('div')
+  descriptionDiv.classList.add('setting-description')
+  descriptionDiv.innerHTML = getSettingDescription(keyPath)
+  label.appendChild(descriptionDiv)
+  fragment.appendChild(label)
+
+  const controls = document.createElement('div')
+  controls.classList.add('controls')
+
+  const editorContainer = document.createElement('div')
+  editorContainer.classList.add('editor-container')
+
+  const editor = new TextEditor({mini: true})
+  editor.element.id = keyPath
+  editor.element.setAttribute('type', 'array')
+  editorContainer.appendChild(editor.element)
+  controls.appendChild(editorContainer)
+  fragment.appendChild(controls)
+
+  return fragment
+}
+
+function elementForObject (namespace, name, value) {
+  if (_.keys(value).length === 0) {
+    return document.createDocumentFragment()
+  } else {
+    let keyPath = `${namespace}.${name}`
+    let schema = atom.config.getSchema(keyPath)
+    let isCollapsed = schema.collapsed === true
+
+    const section = document.createElement('section')
+    section.classList.add('sub-section')
+    if (isCollapsed) {
+      section.classList.add('collapsed')
+    }
+
+    const h3 = document.createElement('h3')
+    h3.classList.add('sub-section-heading', 'has-items')
+    h3.textContent = getSettingTitle(keyPath, name)
+    section.appendChild(h3)
+
+    const descriptionDiv = document.createElement('div')
+    descriptionDiv.classList.add('setting-description')
+    descriptionDiv.innerHTML = getSettingDescription(keyPath)
+    section.appendChild(descriptionDiv)
+
+    const div = document.createElement('div')
+    div.classList.add('sub-section-body')
+    for (const key of sortSettings(keyPath, value)) {
+      div.appendChild(elementForSetting(namespace, `${name}.${key}`, value[key]))
+    }
+    section.appendChild(div)
+
+    return section
+  }
+}
+
+function enumOptions (options, {keyPath, radio}) {
+  const containerTag = radio ? 'fieldset' : 'select'
+  const container = document.createElement(containerTag)
+  container.id = keyPath
+  const containerClass = radio ? 'input-radio-group' : 'form-control'
+  container.classList.add(containerClass)
+
+  const conversion = radio ? optionToRadio : optionToSelect
+  const optionElements = options.map(option => conversion(option, keyPath))
+
+  for (const optionElement of optionElements) { container.appendChild(optionElement) }
+
+  return container
+}
+
+function optionToRadio (option, keyPath) {
+  const button = document.createElement('input')
+  const label = document.createElement('label')
+  label.classList.add('input-label')
+  let value
+  let description = ''
+  if (option.hasOwnProperty('value')) {
+    value = option.value
+    description = option.description
+  } else {
+    value = option
+    description = option
+  }
+  button.classList.add('input-radio')
+  button.id = `${keyPath}[${value}]`
+  button.name = keyPath
+  button.type = 'radio'
+  button.value = value
+  label.appendChild(button)
+  label.appendChild(document.createTextNode(description))
+  return label
+}
+
+function optionToSelect (option, keyPath) {
+  const optionElement = document.createElement('option')
+  if (option.hasOwnProperty('value')) {
+    optionElement.value = option.value
+    optionElement.textContent = option.description
+  } else {
+    optionElement.value = option
+    optionElement.textContent = option
+  }
+  return optionElement
+}
diff --git a/packages/settings-view/lib/settings-view.js b/packages/settings-view/lib/settings-view.js
new file mode 100644
index 000000000..de210ab0b
--- /dev/null
+++ b/packages/settings-view/lib/settings-view.js
@@ -0,0 +1,394 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import path from 'path'
+import etch from 'etch'
+import _ from 'underscore-plus'
+import {CompositeDisposable, Disposable} from 'atom'
+
+import GeneralPanel from './general-panel'
+import EditorPanel from './editor-panel'
+import PackageDetailView from './package-detail-view'
+import KeybindingsPanel from './keybindings-panel'
+import InstallPanel from './install-panel'
+import ThemesPanel from './themes-panel'
+import InstalledPackagesPanel from './installed-packages-panel'
+import UpdatesPanel from './updates-panel'
+import UriHandlerPanel from './uri-handler-panel'
+
+export default class SettingsView {
+  constructor ({uri, packageManager, snippetsProvider, activePanel} = {}) {
+    this.uri = uri
+    this.packageManager = packageManager
+    this.snippetsProvider = snippetsProvider
+    this.deferredPanel = activePanel
+    this.destroyed = false
+    this.panelsByName = {}
+    this.panelCreateCallbacks = {}
+
+    etch.initialize(this)
+    this.disposables = new CompositeDisposable()
+    this.disposables.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+
+    this.disposables.add(atom.packages.onDidActivateInitialPackages(() => {
+      this.disposables.add(
+        atom.packages.onDidActivatePackage(pack => this.removePanelCache(pack.name)),
+        atom.packages.onDidDeactivatePackage(pack => this.removePanelCache(pack.name))
+      )
+    }))
+
+    process.nextTick(() => this.initializePanels())
+  }
+
+  removePanelCache (name) {
+    delete this.panelsByName[name]
+  }
+
+  update () {}
+
+  destroy () {
+    this.destroyed = true
+    this.disposables.dispose()
+    for (let name in this.panelsByName) {
+      const panel = this.panelsByName[name]
+      panel.destroy()
+    }
+
+    return etch.destroy(this)
+  }
+
+  render () {
+    return (
+      <div className='settings-view pane-item' tabIndex='-1'>
+        <div className='config-menu' ref='sidebar'>
+          <ul className='panels-menu nav nav-pills nav-stacked' ref='panelMenu'>
+            <div className='panel-menu-separator' ref='menuSeparator' />
+          </ul>
+          <div className='button-area'>
+            <button className='btn btn-default icon icon-link-external' ref='openDotAtom'>Open Config Folder</button>
+          </div>
+        </div>
+        {/* The tabindex attr below ensures that clicks in a panel item won't
+        cause this view to gain focus. This is important because when this view
+        gains focus (e.g. immediately after atom displays it), it focuses the
+        currently active panel item. If that focusing causes the active panel to
+        scroll (e.g. because the active panel itself passes focus on to a search
+        box at the top of a scrolled panel), then the browser will not fire the
+        click event on the element within the panel on which the user originally
+        clicked (e.g. a package card). This would prevent us from showing a
+        package detail view when clicking on a package card. Phew! */}
+        <div className='panels' tabIndex='-1' ref='panels' />
+      </div>
+    )
+  }
+
+  // This prevents the view being actually disposed when closed
+  // If you remove it you will need to ensure the cached settingsView
+  // in main.coffee is correctly released on close as well...
+  onDidChangeTitle () { return new Disposable() }
+
+  initializePanels () {
+    if (this.refs.panels.children.length > 1) {
+      return
+    }
+
+    const clickHandler = (event) => {
+      const target = event.target.closest('.panels-menu li a, .panels-packages li a')
+      if (target) {
+        this.showPanel(target.closest('li').name)
+      }
+    }
+    this.element.addEventListener('click', clickHandler)
+    this.disposables.add(new Disposable(() => this.element.removeEventListener('click', clickHandler)))
+
+    const focusHandler = () => {
+      this.focusActivePanel()
+    }
+    this.element.addEventListener('focus', focusHandler)
+    this.disposables.add(new Disposable(() => this.element.removeEventListener('focus', focusHandler)))
+
+    const openDotAtomClickHandler = () => {
+      atom.open({pathsToOpen: [atom.getConfigDirPath()]})
+    }
+    this.refs.openDotAtom.addEventListener('click', openDotAtomClickHandler)
+    this.disposables.add(new Disposable(() => this.refs.openDotAtom.removeEventListener('click', openDotAtomClickHandler)))
+
+    this.addCorePanel('Core', 'settings', () => new GeneralPanel())
+    this.addCorePanel('Editor', 'code', () => new EditorPanel())
+    if (atom.config.getSchema('core.uriHandlerRegistration').type !== 'any') {
+      // "feature flag" based on core support for URI handling
+      this.addCorePanel('URI Handling', 'link', () => new UriHandlerPanel())
+    }
+    if ((process.platform === 'win32') && (require('atom').WinShell != null)) {
+      const SystemPanel = require('./system-windows-panel')
+      this.addCorePanel('System', 'device-desktop', () => new SystemPanel())
+    }
+    this.addCorePanel('Keybindings', 'keyboard', () => new KeybindingsPanel())
+    this.addCorePanel('Packages', 'package', () => new InstalledPackagesPanel(this, this.packageManager))
+    this.addCorePanel('Themes', 'paintcan', () => new ThemesPanel(this, this.packageManager))
+    this.addCorePanel('Updates', 'cloud-download', () => new UpdatesPanel(this, this.packageManager))
+    this.addCorePanel('Install', 'plus', () => new InstallPanel(this, this.packageManager))
+
+    this.showDeferredPanel()
+
+    if (!this.activePanel) {
+      this.showPanel('Core')
+    }
+
+    if (document.body.contains(this.element)) {
+      this.refs.sidebar.style.width = this.refs.sidebar.offsetWidth
+    }
+  }
+
+  serialize () {
+    return {
+      deserializer: 'SettingsView',
+      version: 2,
+      activePanel: this.activePanel != null ? this.activePanel : this.deferredPanel,
+      uri: this.uri
+    }
+  }
+
+  getPackages () {
+    let bundledPackageMetadataCache
+    if (this.packages != null) { return this.packages }
+
+    this.packages = atom.packages.getLoadedPackages()
+
+    try {
+      const packageMetadata = require(path.join(atom.getLoadSettings().resourcePath, 'package.json'))
+      bundledPackageMetadataCache = packageMetadata ? packageMetadata._atomPackages : null
+    } catch (error) {}
+
+    // Include disabled packages so they can be re-enabled from the UI
+    const disabledPackages = atom.config.get('core.disabledPackages') || []
+    for (const packageName of disabledPackages) {
+      var metadata
+      const packagePath = atom.packages.resolvePackagePath(packageName)
+      if (!packagePath) {
+        continue
+      }
+
+      try {
+        metadata = require(path.join(packagePath, 'package.json'))
+      } catch (error) {
+        if (bundledPackageMetadataCache && bundledPackageMetadataCache[packageName]) {
+          metadata = bundledPackageMetadataCache[packageName].metadata
+        }
+      }
+      if (metadata == null) {
+        continue
+      }
+
+      const name = metadata.name != null ? metadata.name : packageName
+      if (!_.findWhere(this.packages, {name})) {
+        this.packages.push({name, metadata, path: packagePath})
+      }
+    }
+
+    this.packages.sort((pack1, pack2) => {
+      const title1 = this.packageManager.getPackageTitle(pack1)
+      const title2 = this.packageManager.getPackageTitle(pack2)
+      return title1.localeCompare(title2)
+    })
+
+    return this.packages
+  }
+
+  addCorePanel (name, iconName, panelCreateCallback) {
+    const panelMenuItem = document.createElement('li')
+    panelMenuItem.name = name
+    panelMenuItem.setAttribute('name', name)
+
+    const a = document.createElement('a')
+    a.classList.add('icon', `icon-${iconName}`)
+    a.textContent = name
+    panelMenuItem.appendChild(a)
+
+    this.refs.menuSeparator.parentElement.insertBefore(panelMenuItem, this.refs.menuSeparator)
+    this.addPanel(name, panelCreateCallback)
+  }
+
+  addPanel (name, panelCreateCallback) {
+    this.panelCreateCallbacks[name] = panelCreateCallback
+    if (this.deferredPanel && this.deferredPanel.name === name) {
+      this.showDeferredPanel()
+    }
+  }
+
+  getOrCreatePanel (name, options) {
+    let panel = this.panelsByName[name]
+    if (panel) return panel
+
+    if (name in this.panelCreateCallbacks) {
+      panel = this.panelCreateCallbacks[name]()
+      delete this.panelCreateCallbacks[name]
+    } else if (options && options.pack) {
+      if (!options.pack.metadata) {
+        options.pack.metadata = _.clone(options.pack)
+      }
+      panel = new PackageDetailView(options.pack, this, this.packageManager, this.snippetsProvider)
+    }
+    if (panel) {
+      this.panelsByName[name] = panel
+    }
+
+    return panel
+  }
+
+  makePanelMenuActive (name) {
+    const previouslyActivePanel = this.refs.sidebar.querySelector('.active')
+    if (previouslyActivePanel) {
+      previouslyActivePanel.classList.remove('active')
+    }
+
+    const newActivePanel = this.refs.sidebar.querySelector(`[name='${name}']`)
+    if (newActivePanel) {
+      newActivePanel.classList.add('active')
+    }
+  }
+
+  focusActivePanel () {
+    // Pass focus to panel that is currently visible
+    for (let i = 0; i < this.refs.panels.children.length; i++) {
+      const child = this.refs.panels.children[i]
+      if (child.offsetWidth > 0) {
+        child.focus()
+      }
+    }
+  }
+
+  showDeferredPanel () {
+    if (this.deferredPanel) {
+      const {name, options} = this.deferredPanel
+      this.showPanel(name, options)
+    }
+  }
+
+  // Public: show a panel.
+  //
+  // * `name` {String} the name of the panel to show
+  // * `options` {Object} an options hash. Will be passed to `beforeShow()` on
+  //   the panel. Options may include (but are not limited to):
+  //   * `uri` the URI the panel was launched from
+  showPanel (name, options) {
+    if (this.activePanel) {
+      const prev = this.panelsByName[this.activePanel.name]
+      if (prev) {
+        prev.scrollPosition = prev.element.scrollTop
+      }
+    }
+
+    const panel = this.getOrCreatePanel(name, options)
+    if (panel) {
+      this.appendPanel(panel, options)
+      this.makePanelMenuActive(name)
+      this.setActivePanel(name, options)
+      this.deferredPanel = null
+    } else {
+      this.deferredPanel = {name, options}
+    }
+  }
+
+  showPanelForURI (uri) {
+    const regex = /config\/([a-z]+)\/?([a-zA-Z0-9_-]+)?/i
+    const match = regex.exec(uri)
+
+    if (match) {
+      const path1 = match[1]
+      const path2 = match[2]
+
+      if (path1 === 'packages' && path2 != null) {
+        this.showPanel(path2, {
+          uri: uri,
+          pack: {name: path2},
+          back: atom.packages.getLoadedPackage(path2) ? 'Packages' : null
+        })
+      } else {
+        const panelName = path1[0].toUpperCase() + path1.slice(1)
+        this.showPanel(panelName, {uri})
+      }
+    }
+  }
+
+  appendPanel (panel, options) {
+    for (let i = 0; i < this.refs.panels.children.length; i++) {
+      this.refs.panels.children[i].style.display = 'none'
+    }
+
+    if (!this.refs.panels.contains(panel.element)) {
+      this.refs.panels.appendChild(panel.element)
+    }
+
+    if (panel.beforeShow) {
+      panel.beforeShow(options)
+    }
+    panel.show()
+    panel.focus()
+  }
+
+  setActivePanel (name, options = {}) {
+    this.activePanel = {name, options}
+
+    const panel = this.panelsByName[name]
+    if (panel && panel.scrollPosition) {
+      panel.element.scrollTop = panel.scrollPosition
+      delete panel.scrollPosition
+    }
+  }
+
+  removePanel (name) {
+    const panel = this.panelsByName[name]
+    if (panel) {
+      panel.destroy()
+      delete this.panelsByName[name]
+    }
+  }
+
+  getTitle () {
+    return 'Settings'
+  }
+
+  getIconName () {
+    return 'tools'
+  }
+
+  getURI () {
+    return this.uri
+  }
+
+  isEqual (other) {
+    return other instanceof SettingsView
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
diff --git a/packages/settings-view/lib/system-windows-panel.js b/packages/settings-view/lib/system-windows-panel.js
new file mode 100644
index 000000000..604dc217b
--- /dev/null
+++ b/packages/settings-view/lib/system-windows-panel.js
@@ -0,0 +1,145 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import {WinShell, CompositeDisposable} from 'atom'
+import etch from 'etch'
+
+export default class SystemPanel {
+  constructor () {
+    etch.initialize(this)
+    this.subscriptions = new CompositeDisposable()
+    this.subscriptions.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+
+    WinShell.fileHandler.isRegistered((i) => { this.refs.fileHandlerCheckbox.checked = i })
+    WinShell.fileContextMenu.isRegistered((i) => { this.refs.fileContextMenuCheckbox.checked = i })
+    WinShell.folderContextMenu.isRegistered((i) => { this.refs.folderContextMenuCheckbox.checked = i })
+  }
+
+  destroy () {
+    this.subscriptions.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  render () {
+    return (
+      <div className='panels-item' tabIndex='0'>
+        <form className='general-panel section'>
+          <div className='settings-panel'>
+            <div className='section-container'>
+              <div className='block section-heading icon icon-device-desktop'>System Settings</div>
+              <div className='text icon icon-question'>These settings determine how Atom integrates with your operating system.</div>
+              <div className='section-body'>
+                <div className='control-group'>
+                  <div className='controls'>
+                    <div className='checkbox'>
+                      <label for='system.windows.file-handler'>
+                        <input
+                          ref='fileHandlerCheckbox'
+                          id='system.windows.file-handler'
+                          className='input-checkbox'
+                          type='checkbox'
+                          onclick={(e) => { this.setRegistration(WinShell.fileHandler, e.target.checked) }} />
+                        <div className='setting-title'>Register as file handler</div>
+                        <div className='setting-description'>
+                          Show {WinShell.appName} in the "Open with" application list for easy association with file types.
+                        </div>
+                      </label>
+                    </div>
+                  </div>
+                </div>
+                <div className='control-group'>
+                  <div className='controls'>
+                    <div className='checkbox'>
+                      <label for='system.windows.shell-menu-files'>
+                        <input
+                          ref='fileContextMenuCheckbox'
+                          id='system.windows.shell-menu-files'
+                          className='input-checkbox'
+                          type='checkbox'
+                          onclick={(e) => { this.setRegistration(WinShell.fileContextMenu, e.target.checked) }} />
+                        <div className='setting-title'>Show in file context menus</div>
+                        <div className='setting-description'>
+                          Add "Open with {WinShell.appName}" to the File Explorer context menu for files.
+                        </div>
+                      </label>
+                    </div>
+                  </div>
+                </div>
+                <div className='control-group'>
+                  <div className='controls'>
+                    <div className='checkbox'>
+                      <label for='system.windows.shell-menu-folders'>
+                        <input
+                          ref='folderContextMenuCheckbox'
+                          id='system.windows.shell-menu-folders'
+                          className='input-checkbox'
+                          type='checkbox'
+                          onclick={(e) => {
+                            this.setRegistration(WinShell.folderContextMenu, e.target.checked)
+                            this.setRegistration(WinShell.folderBackgroundContextMenu, e.target.checked)
+                          }} />
+                        <div className='setting-title'>Show in folder context menus</div>
+                        <div className='setting-description'>
+                          Add "Open with {WinShell.appName}" to the File Explorer context menu for folders.
+                        </div>
+                      </label>
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        </form>
+      </div>
+    )
+  }
+
+  setRegistration (option, shouldBeRegistered) {
+    if (shouldBeRegistered) {
+      return option.register(function () {})
+    } else {
+      return option.deregister(function () {})
+    }
+  }
+
+  focus () {
+    this.element.focus()
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
diff --git a/packages/settings-view/lib/themes-panel.js b/packages/settings-view/lib/themes-panel.js
new file mode 100644
index 000000000..43f20d658
--- /dev/null
+++ b/packages/settings-view/lib/themes-panel.js
@@ -0,0 +1,484 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import fuzzaldrin from 'fuzzaldrin'
+import etch from 'etch'
+import _ from 'underscore-plus'
+import {CompositeDisposable, TextEditor} from 'atom'
+
+import CollapsibleSectionPanel from './collapsible-section-panel'
+import PackageCard from './package-card'
+import ErrorView from './error-view'
+
+import List from './list'
+import ListView from './list-view'
+import {ownerFromRepository, packageComparatorAscending} from './utils'
+
+export default class ThemesPanel extends CollapsibleSectionPanel {
+  static loadPackagesDelay () {
+    return 300
+  }
+
+  constructor (settingsView, packageManager) {
+    super()
+
+    this.settingsView = settingsView
+    this.packageManager = packageManager
+    etch.initialize(this)
+    this.items = {
+      dev: new List('name'),
+      core: new List('name'),
+      user: new List('name'),
+      git: new List('name')
+    }
+    this.itemViews = {
+      dev: new ListView(this.items.dev, this.refs.devPackages, this.createPackageCard.bind(this)),
+      core: new ListView(this.items.core, this.refs.corePackages, this.createPackageCard.bind(this)),
+      user: new ListView(this.items.user, this.refs.communityPackages, this.createPackageCard.bind(this)),
+      git: new ListView(this.items.git, this.refs.gitPackages, this.createPackageCard.bind(this))
+    }
+
+    this.disposables = new CompositeDisposable()
+    this.disposables.add(
+      this.packageManager.on('theme-install-failed theme-uninstall-failed', ({pack, error}) => {
+        this.refs.themeErrors.appendChild(new ErrorView(this.packageManager, error).element)
+      })
+    )
+    this.disposables.add(this.handleEvents())
+    this.disposables.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+    this.loadPackages()
+
+    this.disposables.add(
+      this.packageManager.on('theme-installed theme-uninstalled', () => {
+        let loadPackagesTimeout
+        clearTimeout(loadPackagesTimeout)
+        loadPackagesTimeout = setTimeout(() => {
+          this.populateThemeMenus()
+          this.loadPackages()
+        }, ThemesPanel.loadPackagesDelay())
+      })
+    )
+
+    this.disposables.add(atom.themes.onDidChangeActiveThemes(() => this.updateActiveThemes()))
+    this.disposables.add(atom.tooltips.add(this.refs.activeUiThemeSettings, {title: 'Settings'}))
+    this.disposables.add(atom.tooltips.add(this.refs.activeSyntaxThemeSettings, {title: 'Settings'}))
+    this.updateActiveThemes()
+
+    this.disposables.add(this.refs.filterEditor.onDidStopChanging(() => { this.matchPackages() }))
+  }
+
+  update () {}
+
+  focus () {
+    this.refs.filterEditor.element.focus()
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  destroy () {
+    this.disposables.dispose()
+    return etch.destroy(this)
+  }
+
+  render () {
+    return (
+      <div className='panels-item' tabIndex='-1'>
+        <div className='section packages themes-panel'>
+          <div className='section-container'>
+            <div className='section-heading icon icon-paintcan'>Choose a Theme</div>
+
+            <div className='text native-key-bindings' tabIndex='-1'>
+              <span className='icon icon-question'>You can also style Pulsar by editing </span>
+              <a className='link' onclick={this.didClickOpenUserStyleSheet}>your stylesheet</a>
+            </div>
+
+            <div className='themes-picker'>
+              <div className='themes-picker-item control-group'>
+                <div className='controls'>
+                  <label className='control-label'>
+                    <div className='setting-title themes-label text'>UI Theme</div>
+                    <div className='setting-description text theme-description'>This styles the tabs, status bar, tree view, and dropdowns</div>
+                  </label>
+                  <div className='select-container'>
+                    <select ref='uiMenu' className='form-control' onchange={this.didChangeUiMenu.bind(this)} />
+                    <button
+                      ref='activeUiThemeSettings'
+                      className='btn icon icon-gear active-theme-settings'
+                      onclick={this.didClickActiveUiThemeSettings.bind(this)} />
+                  </div>
+                </div>
+              </div>
+
+              <div className='themes-picker-item control-group'>
+                <div className='controls'>
+                  <label className='control-label'>
+                    <div className='setting-title themes-label text'>Syntax Theme</div>
+                    <div className='setting-description text theme-description'>This styles the text inside the editor</div>
+                  </label>
+                  <div className='select-container'>
+                    <select ref='syntaxMenu' className='form-control' onchange={this.didChangeSyntaxMenu.bind(this)} />
+                    <button
+                      ref='activeSyntaxThemeSettings'
+                      className='btn icon icon-gear active-syntax-settings'
+                      onclick={this.didClickActiveSyntaxThemeSettings.bind(this)} />
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <section className='section'>
+          <div className='section-container'>
+            <div className='section-heading icon icon-paintcan'>
+              Installed Themes
+              <span ref='totalPackages' className='section-heading-count badge badge-flexible'>…</span>
+            </div>
+            <div className='editor-container'>
+              <TextEditor ref='filterEditor' mini placeholderText='Filter themes by name' />
+            </div>
+
+            <div ref='themeErrors' />
+
+            <section className='sub-section installed-packages'>
+              <h3 ref='communityThemesHeader' className='sub-section-heading icon icon-paintcan'>
+                Community Themes
+                <span ref='communityCount' className='section-heading-count badge badge-flexible'>…</span>
+              </h3>
+              <div ref='communityPackages' className='container package-container'>
+                <div ref='communityLoadingArea' className='alert alert-info loading-area icon icon-hourglass'>Loading themes…</div>
+              </div>
+            </section>
+
+            <section className='sub-section core-packages'>
+              <h3 ref='coreThemesHeader' className='sub-section-heading icon icon-paintcan'>
+                Core Themes
+                <span ref='coreCount' className='section-heading-count badge badge-flexible'>…</span>
+              </h3>
+              <div ref='corePackages' className='container package-container'>
+                <div ref='coreLoadingArea' className='alert alert-info loading-area icon icon-hourglass'>Loading themes…</div>
+              </div>
+            </section>
+
+            <section className='sub-section dev-packages'>
+              <h3 ref='developmentThemesHeader' className='sub-section-heading icon icon-paintcan'>
+                Development Themes
+                <span ref='devCount' className='section-heading-count badge badge-flexible'>…</span>
+              </h3>
+              <div ref='devPackages' className='container package-container'>
+                <div ref='devLoadingArea' className='alert alert-info loading-area icon icon-hourglass'>Loading themes…</div>
+              </div>
+            </section>
+
+            <section className='sub-section git-packages'>
+              <h3 ref='gitThemesHeader' className='sub-section-heading icon icon-paintcan'>
+                Git Themes
+                <span ref='gitCount' className='section-heading-count badge badge-flexible'>…</span>
+              </h3>
+              <div ref='gitPackages' className='container package-container'>
+                <div ref='gitLoadingArea' className='alert alert-info loading-area icon icon-hourglass'>Loading themes…</div>
+              </div>
+            </section>
+          </div>
+        </section>
+      </div>
+    )
+  }
+
+  filterThemes (packages) {
+    packages.dev = packages.dev.filter(({theme}) => theme)
+    packages.user = packages.user.filter(({theme}) => theme)
+    packages.core = packages.core.filter(({theme}) => theme)
+    packages.git = (packages.git || []).filter(({theme}) => theme)
+
+    for (let pack of packages.core) {
+      if (pack.repository == null) {
+        pack.repository = `https://github.com/pulsar-edit/${pack.name}`
+      }
+    }
+
+    for (let packageType of ['dev', 'core', 'user', 'git']) {
+      for (let pack of packages[packageType]) {
+        pack.owner = ownerFromRepository(pack.repository)
+      }
+    }
+    return packages
+  }
+
+  sortThemes (packages) {
+    packages.dev.sort(packageComparatorAscending)
+    packages.core.sort(packageComparatorAscending)
+    packages.user.sort(packageComparatorAscending)
+    packages.git.sort(packageComparatorAscending)
+    return packages
+  }
+
+  loadPackages () {
+    this.packageViews = []
+    this.packageManager.getInstalled().then(packages => {
+      this.packages = this.sortThemes(this.filterThemes(packages))
+
+      this.refs.devLoadingArea.remove()
+      this.items.dev.setItems(this.packages.dev)
+
+      this.refs.coreLoadingArea.remove()
+      this.items.core.setItems(this.packages.core)
+
+      this.refs.communityLoadingArea.remove()
+      this.items.user.setItems(this.packages.user)
+
+      this.refs.gitLoadingArea.remove()
+      this.items.git.setItems(this.packages.git)
+
+      // TODO show empty mesage per section
+
+      this.updateSectionCounts()
+    }).catch((error) => {
+      this.refs.themeErrors.appendChild(new ErrorView(this.packageManager, error).element)
+    })
+  }
+
+  // Update the active UI and syntax themes and populate the menu
+  updateActiveThemes () {
+    this.activeUiTheme = this.getActiveUiTheme()
+    this.activeSyntaxTheme = this.getActiveSyntaxTheme()
+    this.populateThemeMenus()
+    this.toggleActiveThemeButtons()
+  }
+
+  toggleActiveThemeButtons () {
+    if (this.hasSettings(this.activeUiTheme)) {
+      this.refs.activeUiThemeSettings.style.display = ''
+    } else {
+      this.refs.activeUiThemeSettings.style.display = 'none'
+    }
+
+    if (this.hasSettings(this.activeSyntaxTheme)) {
+      this.refs.activeSyntaxThemeSettings.display = ''
+    } else {
+      this.refs.activeSyntaxThemeSettings.display = 'none'
+    }
+  }
+
+  hasSettings (packageName) {
+    return this.packageManager.packageHasSettings(packageName)
+  }
+
+  // Populate the theme menus from the theme manager's active themes
+  populateThemeMenus () {
+    this.refs.uiMenu.innerHTML = ''
+    this.refs.syntaxMenu.innerHTML = ''
+    const availableThemes = _.sortBy(atom.themes.getLoadedThemes(), 'name')
+    for (let {name, metadata} of availableThemes) {
+      switch (metadata.theme) {
+        case 'ui': {
+          const themeItem = this.createThemeMenuItem(name)
+          if (name === this.activeUiTheme) {
+            themeItem.selected = true
+          }
+          this.refs.uiMenu.appendChild(themeItem)
+          break
+        }
+        case 'syntax': {
+          const themeItem = this.createThemeMenuItem(name)
+          if (name === this.activeSyntaxTheme) {
+            themeItem.selected = true
+          }
+          this.refs.syntaxMenu.appendChild(themeItem)
+          break
+        }
+      }
+    }
+  }
+
+  // Get the name of the active ui theme.
+  getActiveUiTheme () {
+    for (let {name, metadata} of atom.themes.getActiveThemes()) {
+      if (metadata.theme === 'ui') {
+        return name
+      }
+    }
+    return null
+  }
+
+  // Get the name of the active syntax theme.
+  getActiveSyntaxTheme () {
+    for (let {name, metadata} of atom.themes.getActiveThemes()) {
+      if (metadata.theme === 'syntax') { return name }
+    }
+    return null
+  }
+
+  // Update the config with the selected themes
+  updateThemeConfig () {
+    const themes = []
+    if (this.activeUiTheme) {
+      themes.push(this.activeUiTheme)
+    }
+    if (this.activeSyntaxTheme) {
+      themes.push(this.activeSyntaxTheme)
+    }
+    if (themes.length > 0) {
+      atom.config.set('core.themes', themes)
+    }
+  }
+
+  scheduleUpdateThemeConfig () {
+    setTimeout(() => { this.updateThemeConfig() }, 100)
+  }
+
+  // Create a menu item for the given theme name.
+  createThemeMenuItem (themeName) {
+    const title = _.undasherize(_.uncamelcase(themeName.replace(/-(ui|syntax)/g, '').replace(/-theme$/g, '')))
+    const option = document.createElement('option')
+    option.value = themeName
+    option.textContent = title
+    return option
+  }
+
+  createPackageCard (pack) {
+    return new PackageCard(pack, this.settingsView, this.packageManager, {back: 'Themes'})
+  }
+
+  filterPackageListByText (text) {
+    if (!this.packages) {
+      return
+    }
+
+    for (let packageType of ['dev', 'core', 'user', 'git']) {
+      const allViews = this.itemViews[packageType].getViews()
+      const activeViews = this.itemViews[packageType].filterViews((pack) => {
+        if (text === '') {
+          return true
+        } else {
+          const owner = pack.owner != null ? pack.owner : ownerFromRepository(pack.repository)
+          const filterText = `${pack.name} ${owner}`
+          return fuzzaldrin.score(filterText, text) > 0
+        }
+      })
+
+      for (const view of allViews) {
+        if (view) {
+          view.element.style.display = 'none'
+          view.element.classList.add('hidden')
+        }
+      }
+
+      for (const view of activeViews) {
+        if (view) {
+          view.element.style.display = ''
+          view.element.classList.remove('hidden')
+        }
+      }
+    }
+
+    this.updateSectionCounts()
+  }
+
+  updateUnfilteredSectionCounts () {
+    this.updateSectionCount(this.refs.communityThemesHeader, this.refs.communityCount, this.packages.user.length)
+    this.updateSectionCount(this.refs.coreThemesHeader, this.refs.coreCount, this.packages.core.length)
+    this.updateSectionCount(this.refs.developmentThemesHeader, this.refs.devCount, this.packages.dev.length)
+    this.updateSectionCount(this.refs.gitThemesHeader, this.refs.gitCount, this.packages.git.length)
+
+    this.refs.totalPackages.textContent = `${this.packages.user.length + this.packages.core.length + this.packages.dev.length + this.packages.git.length}`
+  }
+
+  updateFilteredSectionCounts () {
+    const community = this.notHiddenCardsLength(this.refs.communityPackages)
+    this.updateSectionCount(this.refs.communityThemesHeader, this.refs.communityCount, community, this.packages.user.length)
+
+    const dev = this.notHiddenCardsLength(this.refs.devPackages)
+    this.updateSectionCount(this.refs.developmentThemesHeader, this.refs.devCount, dev, this.packages.dev.length)
+
+    const core = this.notHiddenCardsLength(this.refs.corePackages)
+    this.updateSectionCount(this.refs.coreThemesHeader, this.refs.coreCount, core, this.packages.core.length)
+
+    const git = this.notHiddenCardsLength(this.refs.gitPackages)
+    this.updateSectionCount(this.refs.gitThemesHeader, this.refs.gitCount, git, this.packages.git.length)
+
+    const shownThemes = dev + core + community + git
+    const totalThemes = this.packages.user.length + this.packages.core.length + this.packages.dev.length + this.packages.git.length
+    this.refs.totalPackages.textContent = `${shownThemes}/${totalThemes}`
+  }
+
+  resetSectionHasItems () {
+    this.resetCollapsibleSections([this.refs.communityThemesHeader, this.refs.coreThemesHeader, this.refs.developmentThemesHeader, this.refs.gitThemesHeader])
+  }
+
+  matchPackages () {
+    this.filterPackageListByText(this.refs.filterEditor.getText())
+  }
+
+  didClickOpenUserStyleSheet (e) {
+    e.preventDefault()
+    atom.commands.dispatch(atom.views.getView(atom.workspace), 'application:open-your-stylesheet')
+  }
+
+  didChangeUiMenu () {
+    this.activeUiTheme = this.refs.uiMenu.value
+    this.scheduleUpdateThemeConfig()
+  }
+
+  didChangeSyntaxMenu () {
+    this.activeSyntaxTheme = this.refs.syntaxMenu.value
+    this.scheduleUpdateThemeConfig()
+  }
+
+  didClickActiveUiThemeSettings (event) {
+    event.stopPropagation()
+    const theme = atom.themes.getActiveThemes().find((theme) => theme.metadata.theme === 'ui')
+    const activeUiTheme = theme != null ? theme.metadata : null
+    if (activeUiTheme != null) {
+      this.settingsView.showPanel(this.activeUiTheme, {
+        back: 'Themes',
+        pack: activeUiTheme
+      })
+    }
+  }
+
+  didClickActiveSyntaxThemeSettings (event) {
+    event.stopPropagation()
+    const theme = atom.themes.getActiveThemes().find((theme) => theme.metadata.theme === 'syntax')
+    const activeSyntaxTheme = theme != null ? theme.metadata : null
+    if (activeSyntaxTheme != null) {
+      this.settingsView.showPanel(this.activeSyntaxTheme, {
+        back: 'Themes',
+        pack: activeSyntaxTheme
+      })
+    }
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
diff --git a/packages/settings-view/lib/updates-panel.js b/packages/settings-view/lib/updates-panel.js
new file mode 100644
index 000000000..0533c33ce
--- /dev/null
+++ b/packages/settings-view/lib/updates-panel.js
@@ -0,0 +1,265 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import {CompositeDisposable} from 'atom'
+import asyncQueue from 'async/queue'
+import etch from 'etch'
+
+import ErrorView from './error-view'
+import PackageCard from './package-card'
+
+export default class UpdatesPanel {
+  constructor (settingsView, packageManager) {
+    this.settingsView = settingsView
+    this.packageManager = packageManager
+    this.disposables = new CompositeDisposable()
+    this.updatingPackages = []
+    this.packageCards = []
+
+    etch.initialize(this)
+
+    this.refs.updateAllButton.style.display = 'none'
+    this.checkForUpdates()
+
+    this.disposables.add(atom.commands.add(this.element, {
+      'core:move-up': () => { this.scrollUp() },
+      'core:move-down': () => { this.scrollDown() },
+      'core:page-up': () => { this.pageUp() },
+      'core:page-down': () => { this.pageDown() },
+      'core:move-to-top': () => { this.scrollToTop() },
+      'core:move-to-bottom': () => { this.scrollToBottom() }
+    }))
+
+    this.disposables.add(this.packageManager.on('package-updating theme-updating', ({pack, error}) => {
+      this.refs.checkButton.disabled = true
+      this.updatingPackages.push(pack)
+    }))
+
+    this.disposables.add(
+      this.packageManager.on('package-updated theme-updated package-update-failed theme-update-failed', ({pack, error}) => {
+        if (error != null) {
+          this.refs.updateErrors.appendChild(new ErrorView(this.packageManager, error).element)
+        }
+
+        for (let i = 0; i < this.updatingPackages.length; i++) {
+          const update = this.updatingPackages[i]
+          if (update.name === pack.name) {
+            this.updatingPackages.splice(i, 1)
+          }
+        }
+
+        if (!this.updatingPackages.length) {
+          this.refs.checkButton.disabled = false
+        }
+      })
+    )
+  }
+
+  destroy () {
+    this.clearPackageCards()
+    this.disposables.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  render () {
+    return (
+      <div tabIndex='0' className='panels-item'>
+        <section className='section packages'>
+          <div className='section-container updates-container'>
+            <div className='updates-heading-container'>
+              <h1 className='section-heading icon icon-cloud-download'>Available Updates</h1>
+              <div className='section-heading updates-btn-group'>
+                <button
+                  ref='checkButton'
+                  className='update-all-button btn'
+                  onclick={() => { this.checkForUpdates(true) }}>Check for Updates</button>
+                <button
+                  ref='updateAllButton'
+                  className='update-all-button btn btn-primary'
+                  onclick={() => { this.updateAll() }}>Update All</button>
+              </div>
+            </div>
+
+            <div ref='versionPinnedPackagesMessage' className='alert alert-warning icon icon-alert'>The following packages are pinned to their current version and are not being checked for updates: <strong>{ this.packageManager.getVersionPinnedPackages().join(', ') }</strong></div>
+            <div ref='updateErrors' />
+            <div ref='checkingMessage' className='alert alert-info icon icon-hourglass'>{`Checking for updates\u2026`}</div>
+            <div ref='noUpdatesMessage' className='alert alert-info icon icon-heart'>All of your installed packages are up to date!</div>
+            <div ref='updatesContainer' className='container package-container' />
+          </div>
+        </section>
+      </div>
+    )
+  }
+
+  focus () {
+    this.element.focus()
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  beforeShow (opts) {
+    if (opts && opts.back) {
+      this.refs.breadcrumb.textContent = opts.back
+      this.refs.breadcrumb.onclick = () => { this.settingsView.showPanel(opts.back) }
+    }
+
+    if (opts && opts.updates) {
+      this.availableUpdates = opts.updates
+      this.addUpdateViews()
+    } else {
+      this.availableUpdates = []
+      this.clearPackageCards()
+      this.checkForUpdates()
+    }
+
+    if (this.packageManager.getVersionPinnedPackages().length === 0) {
+      this.refs.versionPinnedPackagesMessage.style.display = 'none'
+    }
+  }
+
+  // Check for updates and display them
+  async checkForUpdates (clearCache) {
+    this.refs.noUpdatesMessage.style.display = 'none'
+    this.refs.updateAllButton.disabled = true
+    this.refs.checkButton.disabled = true
+    this.refs.checkingMessage.style.display = ''
+
+    try {
+      this.availableUpdates = await this.packageManager.getOutdated(clearCache)
+      this.refs.checkButton.disabled = false
+      this.addUpdateViews()
+    } catch (error) {
+      this.refs.checkButton.disabled = false
+      this.refs.checkingMessage.style.display = 'none'
+      this.refs.updateErrors.appendChild(new ErrorView(this.packageManager, error).element)
+    }
+  }
+
+  addUpdateViews () {
+    if (this.availableUpdates.length > 0) {
+      this.refs.updateAllButton.style.display = ''
+      this.refs.updateAllButton.disabled = false
+    }
+    this.refs.checkingMessage.style.display = 'none'
+    this.clearPackageCards()
+    if (this.availableUpdates.length === 0) {
+      this.refs.noUpdatesMessage.style.display = ''
+    }
+
+    for (const pack of this.availableUpdates) {
+      const packageCard = new PackageCard(pack, this.settingsView, this.packageManager, {back: 'Updates'})
+      this.refs.updatesContainer.appendChild(packageCard.element)
+      this.packageCards.push(packageCard)
+    }
+  }
+
+  async updateAll () {
+    this.refs.checkButton.disabled = true
+    this.refs.updateAllButton.disabled = true
+
+    let updatingPackages = this.updatingPackages
+    let successfulUpdatesCount = 0
+    let failedUpdatesCount = 0
+
+    const concurrency = atom.config.get('settings-view.packageUpdateConcurrency') > 0
+      ? atom.config.get('settings-view.packageUpdateConcurrency')
+      : Number.POSITIVE_INFINITY
+
+    const queue = asyncQueue(function (packageCard, callback) {
+      const onUpdateCompleted = function (err) {
+        err == null ? successfulUpdatesCount++ : failedUpdatesCount++
+      }
+
+      if (updatingPackages.includes(packageCard.pack)) {
+        callback()
+      } else {
+        packageCard.update().then(onUpdateCompleted, onUpdateCompleted).then(callback)
+      }
+    }, concurrency)
+
+    queue.push(this.packageCards)
+
+    await queue.drain()
+
+    if (successfulUpdatesCount > 0) {
+      const message = `Restart Atom to complete the update of ${successfulUpdatesCount} ${pluralize('package', successfulUpdatesCount)}:`
+      let detail = ''
+      this.packageCards.forEach((card) => {
+        let oldVersion = ''
+        let newVersion = ''
+
+        if (card.pack.apmInstallSource && card.pack.apmInstallSource.type === 'git') {
+          oldVersion = card.pack.apmInstallSource.sha.substr(0, 8)
+          newVersion = `${card.pack.latestSha.substr(0, 8)}`
+        } else if (card.pack.version && card.pack.latestVersion) {
+          oldVersion = card.pack.version
+          newVersion = card.pack.latestVersion
+        }
+
+        if (oldVersion && newVersion) {
+          detail += `${card.pack.name}@${oldVersion} -> ${newVersion}\n`
+        }
+      })
+      detail = detail.trim()
+
+      const notification = atom.notifications.addSuccess(message, {
+        dismissable: true,
+        buttons: [{
+          text: 'Restart now',
+          onDidClick () { return atom.restartApplication() }
+        },
+        {
+          text: 'I\'ll do it later',
+          onDidClick () { notification.dismiss() }
+        }],
+        detail
+      })
+    }
+
+    if (failedUpdatesCount === 0) {
+      this.refs.checkButton.disabled = false
+      this.refs.updateAllButton.style.display = 'none'
+    } else {
+      this.refs.checkButton.disabled = false
+      this.refs.updateAllButton.disabled = false
+    }
+  }
+
+  clearPackageCards () {
+    while (this.packageCards.length) {
+      this.packageCards.pop().destroy()
+    }
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
+
+function pluralize (word, count) {
+  return (count > 1) ? `${word}s` : word
+}
diff --git a/packages/settings-view/lib/uri-handler-panel.js b/packages/settings-view/lib/uri-handler-panel.js
new file mode 100644
index 000000000..757dc5482
--- /dev/null
+++ b/packages/settings-view/lib/uri-handler-panel.js
@@ -0,0 +1,210 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import {CompositeDisposable} from 'atom'
+import etch from 'etch'
+
+function isSupported () {
+  return ['win32', 'darwin'].includes(process.platform)
+}
+
+function isDefaultProtocolClient () {
+  return require('electron').remote.app.isDefaultProtocolClient('atom', process.execPath, ['--uri-handler', '--'])
+}
+
+function setAsDefaultProtocolClient () {
+  // This Electron API is only available on Windows and macOS. There might be some
+  // hacks to make it work on Linux; see https://github.com/electron/electron/issues/6440
+  return isSupported() && require('electron').remote.app.setAsDefaultProtocolClient('atom', process.execPath, ['--uri-handler', '--'])
+}
+
+export default class UriHandlerPanel {
+  constructor () {
+    this.handleChange = this.handleChange.bind(this)
+    this.handleBecomeProtocolClient = this.handleBecomeProtocolClient.bind(this)
+    this.isDefaultProtocolClient = isDefaultProtocolClient()
+    this.uriHistory = []
+    etch.initialize(this)
+
+    this.subscriptions = new CompositeDisposable()
+    this.subscriptions.add(
+      atom.commands.add(this.element, {
+        'core:move-up': () => { this.scrollUp() },
+        'core:move-down': () => { this.scrollDown() },
+        'core:page-up': () => { this.pageUp() },
+        'core:page-down': () => { this.pageDown() },
+        'core:move-to-top': () => { this.scrollToTop() },
+        'core:move-to-bottom': () => { this.scrollToBottom() }
+      }),
+      atom.uriHandlerRegistry.onHistoryChange(() => {
+        this.uriHistory = atom.uriHandlerRegistry.getRecentlyHandledURIs()
+        etch.update(this)
+      })
+    )
+  }
+
+  destroy () {
+    this.subscriptions.dispose()
+    return etch.destroy(this)
+  }
+
+  update () {}
+
+  render () {
+    const schema = atom.config.getSchema('core.uriHandlerRegistration')
+
+    return (
+      <div className='panels-item' tabIndex='0'>
+        <form className='general-panel section'>
+          <div className='settings-panel'>
+            <div className='section-container'>
+              <div className='block section-heading icon icon-device-desktop'>URI Handling</div>
+              <div className='text icon icon-question'>These settings determine how Pulsar handles atom:// URIs.</div>
+              <div className='section-body'>
+                <div className='control-group'>
+                  <div className='controls'>
+                    <label className='control-label'>
+                      <div className='setting-title'>URI Handler Registration</div>
+                      <div className='setting-description'>
+                        {this.renderRegistrationDescription()}
+                      </div>
+                    </label>
+                    <button
+                      className='btn btn-primary'
+                      disabled={!isSupported() || this.isDefaultProtocolClient}
+                      style={{fontSize: '1.25em', display: 'block'}}
+                      onClick={this.handleBecomeProtocolClient}
+                    >
+                      Register as default atom:// protocol handler
+                    </button>
+                  </div>
+                </div>
+
+                <div className='control-group'>
+                  <div className='controls'>
+                    <label className='control-label'>
+                      <div className='setting-title'>Default Registration</div>
+                      <div className='setting-description'>
+                        {schema.description}
+                      </div>
+                    </label>
+                    <select
+                      id='core.uriHandlerRegistration'
+                      className='form-control'
+                      onChange={this.handleChange}
+                      value={atom.config.get('core.uriHandlerRegistration')}
+                    >
+                      {schema.enum.map(({description, value}) => (
+                        <option value={value}>{description}</option>
+                      ))}
+                    </select>
+                  </div>
+                </div>
+
+                <div className='control-group'>
+                  <div className='controls'>
+                    <label className='controls-label'>
+                      <div className='setting-title'>Recent URIs</div>
+                    </label>
+                    <table className='uri-history'>
+                      <tr>
+                        <th>URI</th>
+                        <th>Handled By</th>
+                      </tr>
+                      {this.uriHistory.map(this.renderHistoryRow.bind(this))}
+                    </table>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        </form>
+      </div>
+    )
+  }
+
+  renderHistoryRow (item, idx) {
+    return (
+      <tr
+        key={item.id}
+        className=''
+      >
+        <td>{item.uri}</td>
+        <td>
+          {item.handled
+            ? this.renderItem(item)
+            : <em>not handled</em>
+          }</td>
+      </tr>
+    )
+  }
+
+  renderItem (item) {
+    if (item.host === 'core') {
+      return <em>core</em>
+    } else {
+      return <a href={`atom://config/packages/${item.host}`} onClick={this.handlePackageLinkClicked}>{item.host}</a>
+    }
+  }
+
+  handlePackageLinkClicked (evt) {
+    evt.preventDefault()
+    atom.workspace.open(evt.target.getAttribute('href'))
+  }
+
+  renderRegistrationDescription () {
+    if (this.isDefaultProtocolClient) {
+      return 'Pulsar is already the default handler for atom:// URIs.'
+    } else if (isSupported()) {
+      return 'Register Pulsar as the default handler for atom:// URIs.'
+    } else {
+      return 'Registration as the default handler for atom:// URIs is only supported on Windows and macOS.'
+    }
+  }
+
+  handleChange (evt) {
+    atom.config.set('core.uriHandlerRegistration', evt.target.value)
+  }
+
+  handleBecomeProtocolClient (evt) {
+    evt.preventDefault()
+    if (setAsDefaultProtocolClient()) {
+      this.isDefaultProtocolClient = isDefaultProtocolClient()
+      etch.update(this)
+    } else {
+      atom.notifications.addError('Could not become default protocol client')
+    }
+  }
+
+  focus () {
+    this.element.focus()
+  }
+
+  show () {
+    this.element.style.display = ''
+  }
+
+  scrollUp () {
+    this.element.scrollTop -= document.body.offsetHeight / 20
+  }
+
+  scrollDown () {
+    this.element.scrollTop += document.body.offsetHeight / 20
+  }
+
+  pageUp () {
+    this.element.scrollTop -= this.element.offsetHeight
+  }
+
+  pageDown () {
+    this.element.scrollTop += this.element.offsetHeight
+  }
+
+  scrollToTop () {
+    this.element.scrollTop = 0
+  }
+
+  scrollToBottom () {
+    this.element.scrollTop = this.element.scrollHeight
+  }
+}
diff --git a/packages/settings-view/lib/utils.js b/packages/settings-view/lib/utils.js
new file mode 100644
index 000000000..0bd3c4b8e
--- /dev/null
+++ b/packages/settings-view/lib/utils.js
@@ -0,0 +1,40 @@
+const ownerFromRepository = repository => {
+  if (!repository) return ''
+
+  const loginRegex = /github\.com\/([\w-]+)\/.+/
+  let repo = repository
+  if (typeof repository !== 'string') {
+    repo = repository.url
+    if (repo.match('git@github')) {
+      const repoName = repo.split(':')[1]
+      repo = `https://github.com/${repoName}`
+    }
+  }
+
+  if (!repo.match('github.com/')) {
+    repo = `https://github.com/${repo}`
+  }
+
+  const match = repo.match(loginRegex)
+  return match ? match[1] : ''
+}
+
+const packageComparatorAscending = (left, right) => {
+  const leftStatus = atom.packages.isPackageDisabled(left.name)
+  const rightStatus = atom.packages.isPackageDisabled(right.name)
+  if (leftStatus === rightStatus) {
+    if (left.name > right.name) {
+      return -1
+    } else if (left.name < right.name) {
+      return 1
+    } else {
+      return 0
+    }
+  } else if (leftStatus > rightStatus) {
+    return -1
+  } else {
+    return 1
+  }
+}
+
+module.exports = {ownerFromRepository, packageComparatorAscending}
diff --git a/packages/settings-view/menus/settings-view.cson b/packages/settings-view/menus/settings-view.cson
new file mode 100644
index 000000000..c88cde3d2
--- /dev/null
+++ b/packages/settings-view/menus/settings-view.cson
@@ -0,0 +1,16 @@
+'menu': [
+  {
+    'label': 'Packages'
+    'submenu': [
+      'label': 'Settings View'
+      'submenu': [
+        { 'label': 'Open', 'command': 'settings-view:open' }
+        { 'label': 'Show Keybindings', 'command': 'settings-view:show-keybindings' }
+        { 'label': 'Install Packages/Themes', 'command': 'settings-view:install-packages-and-themes' }
+        { 'label': 'Update Packages/Themes', 'command': 'settings-view:check-for-package-updates' }
+        { 'label': 'Manage Packages', 'command': 'settings-view:uninstall-packages' }
+        { 'label': 'Manage Themes', 'command': 'settings-view:uninstall-themes' }
+      ]
+    ]
+  }
+]
diff --git a/packages/settings-view/package-lock.json b/packages/settings-view/package-lock.json
new file mode 100644
index 000000000..5e64e14c3
--- /dev/null
+++ b/packages/settings-view/package-lock.json
@@ -0,0 +1,1529 @@
+{
+  "name": "settings-view",
+  "version": "0.261.11",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "settings-view",
+      "version": "0.261.11",
+      "license": "MIT",
+      "dependencies": {
+        "async": "^3.2.0",
+        "dompurify": "^2.0.17",
+        "etch": "0.9.0",
+        "fs-plus": "^3.0.0",
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+        "glob": "4.3.1",
+        "hosted-git-info": "^2.8.9",
+        "marked": "^4.0.10",
+        "request": "^2.83.0",
+        "season": "^6.0.2",
+        "semver": "^5.3.0",
+        "underscore-plus": "^1.0.6"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
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+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
+      "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
+      "dependencies": {
+        "co": "^4.6.0",
+        "fast-deep-equal": "^1.0.0",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.3.0"
+      }
+    },
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+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "engines": {
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+      }
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+      "dependencies": {
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+      }
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+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
+      "engines": {
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+      }
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+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.0.tgz",
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+    },
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+    },
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+            "path-is-absolute": "^1.0.0"
+          }
+        },
+        "minimatch": {
+          "version": "3.0.4",
+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+          "integrity": "sha1-UWbihkV/AzBgZL5Ul+jbsMPTIIM=",
+          "requires": {
+            "brace-expansion": "^1.1.7"
+          }
+        }
+      }
+    },
+    "safe-buffer": {
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+      "integrity": "sha1-mR7GnSluAxN0fVm9/St0XDX4go0="
+    },
+    "safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha1-RPoWGwGHuVSd2Eu5GAL5vYOFzWo="
+    },
+    "season": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/season/-/season-6.0.2.tgz",
+      "integrity": "sha1-naWPsd3SSCTXYhstxjpxI7UCF7Y=",
+      "requires": {
+        "cson-parser": "^1.3.0",
+        "fs-plus": "^3.0.0",
+        "yargs": "^3.23.0"
+      }
+    },
+    "semver": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
+      "integrity": "sha1-myzl094C0XxgEq0yaqa00M9U+U8="
+    },
+    "sshpk": {
+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.14.2.tgz",
+      "integrity": "sha1-xvxhZIo9nE52T9P8306hBeSSupg=",
+      "requires": {
+        "asn1": "~0.2.3",
+        "assert-plus": "^1.0.0",
+        "bcrypt-pbkdf": "^1.0.0",
+        "dashdash": "^1.12.0",
+        "ecc-jsbn": "~0.1.1",
+        "getpass": "^0.1.1",
+        "jsbn": "~0.1.0",
+        "safer-buffer": "^2.0.2",
+        "tweetnacl": "~0.14.0"
+      }
+    },
+    "string-width": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+      "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+      "requires": {
+        "code-point-at": "^1.0.0",
+        "is-fullwidth-code-point": "^1.0.0",
+        "strip-ansi": "^3.0.0"
+      }
+    },
+    "strip-ansi": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+      "requires": {
+        "ansi-regex": "^2.0.0"
+      }
+    },
+    "tough-cookie": {
+      "version": "2.4.3",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
+      "integrity": "sha512-Q5srk/4vDM54WJsJio3XNn6K2sCG+CQ8G5Wz6bZhRZoAe/+TxjWB/GlFAnYEbkYVlON9FMk/fE3h2RLpPXo4lQ==",
+      "requires": {
+        "psl": "^1.1.24",
+        "punycode": "^1.4.1"
+      }
+    },
+    "tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "tweetnacl": {
+      "version": "0.14.5",
+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
+      "optional": true
+    },
+    "underscore": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.6.0.tgz",
+      "integrity": "sha1-izixDKze9jM3uLJOT/htRa6lKag="
+    },
+    "underscore-plus": {
+      "version": "1.6.6",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.6.6.tgz",
+      "integrity": "sha1-ZezeG9xEGjXYnmUP1w3PE65Dmn0=",
+      "requires": {
+        "underscore": "~1.6.0"
+      }
+    },
+    "uuid": {
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+      "integrity": "sha1-G0r0lV6zB3xQHCOHL8ZROBFYcTE="
+    },
+    "verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+      "requires": {
+        "assert-plus": "^1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "^1.2.0"
+      }
+    },
+    "window-size": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.4.tgz",
+      "integrity": "sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY="
+    },
+    "wrap-ansi": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+      "requires": {
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
+      }
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    },
+    "y18n": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.2.tgz",
+      "integrity": "sha512-uGZHXkHnhF0XeeAPgnKfPv1bgKAYyVvmNL1xlKsPYZPaIHxGti2hHqvOCQv71XMsLxu1QjergkqogUnms5D3YQ=="
+    },
+    "yargs": {
+      "version": "3.32.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.32.0.tgz",
+      "integrity": "sha1-AwiOnr+edWtpdRYR0qXvWRSCyZU=",
+      "requires": {
+        "camelcase": "^2.0.1",
+        "cliui": "^3.0.3",
+        "decamelize": "^1.1.1",
+        "os-locale": "^1.4.0",
+        "string-width": "^1.0.1",
+        "window-size": "^0.1.4",
+        "y18n": "^3.2.0"
+      }
+    }
+  }
+}
diff --git a/packages/settings-view/package.json b/packages/settings-view/package.json
new file mode 100644
index 000000000..0268d5712
--- /dev/null
+++ b/packages/settings-view/package.json
@@ -0,0 +1,52 @@
+{
+  "name": "settings-view",
+  "version": "0.261.11",
+  "main": "./lib/main",
+  "description": "Edit config settings, install packages, and change themes",
+  "license": "MIT",
+  "uriHandler": {
+    "method": "handleURI",
+    "deferActivation": false
+  },
+  "configSchema": {
+    "packageUpdateConcurrency": {
+      "title": "Maximum simultaneous package updates",
+      "description": "Limit how many processes run simultaneously during package updates. If your machine slows down while updating many packages at once, set this value to a small positive number (e.g., `1` or `2`).",
+      "type": "integer",
+      "default": -1
+    }
+  },
+  "dependencies": {
+    "async": "^3.2.0",
+    "dompurify": "^2.0.17",
+    "etch": "0.9.0",
+    "fs-plus": "^3.0.0",
+    "fuzzaldrin": "^2.1",
+    "glob": "4.3.1",
+    "hosted-git-info": "^2.8.9",
+    "marked": "^4.0.10",
+    "request": "^2.83.0",
+    "season": "^6.0.2",
+    "semver": "^5.3.0",
+    "underscore-plus": "^1.0.6"
+  },
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "engines": {
+    "atom": "*"
+  },
+  "consumedServices": {
+    "status-bar": {
+      "versions": {
+        "^1.0.0": "consumeStatusBar"
+      }
+    },
+    "snippets": {
+      "versions": {
+        "0.1.0": "consumeSnippets"
+      }
+    }
+  },
+  "deserializers": {
+    "SettingsView": "createSettingsView"
+  }
+}
diff --git a/packages/settings-view/spec/atom-io-client-spec.coffee b/packages/settings-view/spec/atom-io-client-spec.coffee
new file mode 100644
index 000000000..094606499
--- /dev/null
+++ b/packages/settings-view/spec/atom-io-client-spec.coffee
@@ -0,0 +1,53 @@
+AtomIoClient = require '../lib/atom-io-client'
+
+describe "AtomIoClient", ->
+
+  beforeEach ->
+    @client = new AtomIoClient
+
+  it "fetches avatar from cache if the network is unavailable", ->
+    spyOn(@client, 'online').andReturn(false)
+    spyOn(@client, 'fetchAndCacheAvatar')
+    expect(@client.fetchAndCacheAvatar).not.toHaveBeenCalled()
+    @client.avatar 'test-user', ->
+
+  describe "request", ->
+    it "fetches api json from cache if the network is unavailable", ->
+      spyOn(@client, 'online').andReturn(false)
+      spyOn(@client, 'fetchFromCache').andReturn({})
+      spyOn(@client, 'request')
+      @client.package 'test-package', ->
+
+      expect(@client.fetchFromCache).toHaveBeenCalled()
+      expect(@client.request).not.toHaveBeenCalled()
+
+    it "returns an error if the API response is not JSON", ->
+      jsonParse = JSON.parse
+
+      waitsFor (done) ->
+        spyOn(@client, 'parseJSON').andThrow()
+        @client.request 'path', (error, data) ->
+          expect(error).not.toBeNull()
+          done()
+
+      runs ->
+        # Tests will throw without this as cleanup requires JSON.parse to work
+        JSON.parse = jsonParse
+
+  it "handles glob errors", ->
+    spyOn(@client, 'avatarGlob').andReturn "#{__dirname}/**"
+    spyOn(require('fs'), 'readdir').andCallFake (dirPath, callback) ->
+      process.nextTick -> callback(new Error('readdir error'))
+
+    callback = jasmine.createSpy('cacheAvatar callback')
+    @client.cachedAvatar 'fakeperson', callback
+
+    waitsFor ->
+      callback.callCount is 1
+
+    runs ->
+      expect(callback.argsForCall[0][0].message).toBe 'readdir error'
+
+  xit "purges old items from cache correctly"
+    # "correctly" in this case means "remove all old items but one" so that we
+    # always have stale data to return if the network is gone.
diff --git a/packages/settings-view/spec/editor-panel-spec.coffee b/packages/settings-view/spec/editor-panel-spec.coffee
new file mode 100644
index 000000000..c1f26ca2d
--- /dev/null
+++ b/packages/settings-view/spec/editor-panel-spec.coffee
@@ -0,0 +1,110 @@
+EditorPanel = require '../lib/editor-panel'
+
+describe "EditorPanel", ->
+  panel = null
+
+  getValueForId = (id) ->
+    element = panel.element.querySelector("##{id.replace(/\./g, '\\.')}")
+    if element?.tagName is "INPUT"
+      element.checked
+    else if element?.tagName is "SELECT"
+      element.value
+    else if element?
+      element.getModel().getText()
+    else
+      return
+
+  setValueForId = (id, value) ->
+    element = panel.element.querySelector("##{id.replace(/\./g, '\\.')}")
+    if element.tagName is "INPUT"
+      element.checked = value
+      element.dispatchEvent(new Event('change', {bubbles: true}))
+    else if element.tagName is "SELECT"
+      element.value = value
+      element.dispatchEvent(new Event('change', {bubbles: true}))
+    else
+      element.getModel().setText(value?.toString())
+      window.advanceClock(10000) # wait for contents-modified to be triggered
+
+  beforeEach ->
+    atom.config.set('editor.boolean', true)
+    atom.config.set('editor.string', 'hey')
+    atom.config.set('editor.object', {boolean: true, int: 3, string: 'test'})
+    atom.config.set('editor.simpleArray', ['a', 'b', 'c'])
+    atom.config.set('editor.complexArray', ['a', 'b', {c: true}])
+
+    atom.config.setSchema('', type: 'object')
+
+    panel = new EditorPanel()
+
+  it "automatically binds named fields to their corresponding config keys", ->
+    expect(getValueForId('editor.boolean')).toBeTruthy()
+    expect(getValueForId('editor.string')).toBe 'hey'
+    expect(getValueForId('editor.object.boolean')).toBeTruthy()
+    expect(getValueForId('editor.object.int')).toBe '3'
+    expect(getValueForId('editor.object.string')).toBe 'test'
+
+    atom.config.set('editor.boolean', false)
+    atom.config.set('editor.string', 'hey again')
+    atom.config.set('editor.object.boolean', false)
+    atom.config.set('editor.object.int', 6)
+    atom.config.set('editor.object.string', 'hi')
+
+    expect(getValueForId('editor.boolean')).toBeFalsy()
+    expect(getValueForId('editor.string')).toBe 'hey again'
+    expect(getValueForId('editor.object.boolean')).toBeFalsy()
+    expect(getValueForId('editor.object.int')).toBe '6'
+    expect(getValueForId('editor.object.string')).toBe 'hi'
+
+    setValueForId('editor.string', "oh hi")
+    setValueForId('editor.boolean', true)
+    setValueForId('editor.object.boolean', true)
+    setValueForId('editor.object.int', 9)
+    setValueForId('editor.object.string', 'yo')
+
+    expect(atom.config.get('editor.boolean')).toBe true
+    expect(atom.config.get('editor.string')).toBe 'oh hi'
+    expect(atom.config.get('editor.object.boolean')).toBe true
+    expect(atom.config.get('editor.object.int')).toBe 9
+    expect(atom.config.get('editor.object.string')).toBe 'yo'
+
+    setValueForId('editor.string', '')
+    setValueForId('editor.object.int', '')
+    setValueForId('editor.object.string', '')
+
+    expect(atom.config.get('editor.string')).toBeUndefined()
+    expect(atom.config.get('editor.object.int')).toBeUndefined()
+    expect(atom.config.get('editor.object.string')).toBeUndefined()
+
+  it "does not save the config value until it has been changed to a new value", ->
+    observeHandler = jasmine.createSpy("observeHandler")
+    atom.config.observe "editor.simpleArray", observeHandler
+    observeHandler.reset()
+
+    window.advanceClock(10000) # wait for contents-modified to be triggered
+    expect(observeHandler).not.toHaveBeenCalled()
+
+    setValueForId('editor.simpleArray', 2)
+    expect(observeHandler).toHaveBeenCalled()
+    observeHandler.reset()
+
+    setValueForId('editor.simpleArray', 2)
+    expect(observeHandler).not.toHaveBeenCalled()
+
+  it "does not update the editor text unless the value it parses to changes", ->
+    setValueForId('editor.simpleArray', "a, b,")
+    expect(atom.config.get('editor.simpleArray')).toEqual ['a', 'b']
+    expect(getValueForId('editor.simpleArray')).toBe 'a, b,'
+
+  it "only adds editors for arrays when all the values in the array are strings", ->
+    expect(getValueForId('editor.simpleArray')).toBe 'a, b, c'
+    expect(getValueForId('editor.complexArray')).toBeUndefined()
+
+    setValueForId('editor.simpleArray', 'a, d')
+
+    expect(atom.config.get('editor.simpleArray')).toEqual ['a', 'd']
+    expect(atom.config.get('editor.complexArray')).toEqual ['a', 'b', {c: true}]
+
+  it "shows the package settings notes for core and editor settings", ->
+    expect(panel.element.querySelector('#editor-settings-note')).toExist()
+    expect(panel.element.querySelector('#editor-settings-note').textContent).toContain('Check language settings')
diff --git a/packages/settings-view/spec/fixtures/a-theme/package.json b/packages/settings-view/spec/fixtures/a-theme/package.json
new file mode 100644
index 000000000..662faf57a
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/a-theme/package.json
@@ -0,0 +1,5 @@
+{
+  "theme": "syntax",
+  "name": "a-theme",
+  "version": "1.0.0"
+}
diff --git a/packages/settings-view/spec/fixtures/installed.json b/packages/settings-view/spec/fixtures/installed.json
new file mode 100644
index 000000000..daed51e47
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/installed.json
@@ -0,0 +1,32 @@
+{
+  "core": [
+    {
+      "name": "core-theme",
+      "theme": "syntax"
+    },
+    {
+      "name": "core-package",
+      "version": "1.0.0"
+    }
+  ],
+  "user": [
+    {
+      "name": "user-theme",
+      "theme": "syntax"
+    },
+    {
+      "name": "user-package",
+      "version": "1.0.0"
+    }
+  ],
+  "dev": [
+    {
+      "name": "dev-theme",
+      "theme": "syntax"
+    },
+    {
+      "name": "dev-package",
+      "version": "1.0.0"
+    }
+  ]
+}
diff --git a/packages/settings-view/spec/fixtures/language-test/grammars/a.json b/packages/settings-view/spec/fixtures/language-test/grammars/a.json
new file mode 100644
index 000000000..318a58387
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/language-test/grammars/a.json
@@ -0,0 +1,9 @@
+{
+  "scopeName": "source.a",
+  "fileTypes": [
+    ".a",
+    ".aa",
+    "a"
+  ],
+  "name": "A Grammar"
+}
diff --git a/packages/settings-view/spec/fixtures/language-test/grammars/b.json b/packages/settings-view/spec/fixtures/language-test/grammars/b.json
new file mode 100644
index 000000000..ef44f7998
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/language-test/grammars/b.json
@@ -0,0 +1,4 @@
+{
+  "name": "B Grammar",
+  "scopeName": "source.b"
+}
diff --git a/packages/settings-view/spec/fixtures/language-test/grammars/c.json b/packages/settings-view/spec/fixtures/language-test/grammars/c.json
new file mode 100644
index 000000000..02f9fe3dd
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/language-test/grammars/c.json
@@ -0,0 +1,3 @@
+{
+  "scopeName": "source.c"
+}
diff --git a/packages/settings-view/spec/fixtures/language-test/keymaps/test.cson b/packages/settings-view/spec/fixtures/language-test/keymaps/test.cson
new file mode 100644
index 000000000..d4f969c6b
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/language-test/keymaps/test.cson
@@ -0,0 +1,4 @@
+'.platform-n64':
+  'cmd-g': 'language-test:run'
+'test':
+  'cmd-g': 'language-test:run'
diff --git a/packages/settings-view/spec/fixtures/language-test/package.json b/packages/settings-view/spec/fixtures/language-test/package.json
new file mode 100644
index 000000000..23a717bec
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/language-test/package.json
@@ -0,0 +1,5 @@
+{
+  "name": "language-test",
+  "version": "1.0.0",
+  "repository": "https://github.com/example/language-test"
+}
diff --git a/packages/settings-view/spec/fixtures/language-test/snippets/bar.json b/packages/settings-view/spec/fixtures/language-test/snippets/bar.json
new file mode 100644
index 000000000..e8a81b0e4
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/language-test/snippets/bar.json
@@ -0,0 +1,8 @@
+{
+  ".source.b": {
+    "BAR": {
+      "prefix": "b",
+      "body": "bar?\nline two"
+    }
+  }
+}
diff --git a/packages/settings-view/spec/fixtures/language-test/snippets/foo.json b/packages/settings-view/spec/fixtures/language-test/snippets/foo.json
new file mode 100644
index 000000000..b30c57cb9
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/language-test/snippets/foo.json
@@ -0,0 +1,8 @@
+{
+  ".source.a": {
+    "FOO": {
+      "prefix": "f",
+      "body": "foo!"
+    }
+  }
+}
diff --git a/packages/settings-view/spec/fixtures/package-internal/README.md b/packages/settings-view/spec/fixtures/package-internal/README.md
new file mode 100644
index 000000000..e69de29bb
diff --git a/packages/settings-view/spec/fixtures/package-internal/package.json b/packages/settings-view/spec/fixtures/package-internal/package.json
new file mode 100644
index 000000000..14b76cb47
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/package-internal/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "package-internal",
+  "repository": "https://github.com/pulsar-edit/pulsar"
+}
diff --git a/packages/settings-view/spec/fixtures/package-with-bugs-property-email/package.json b/packages/settings-view/spec/fixtures/package-with-bugs-property-email/package.json
new file mode 100644
index 000000000..49d640890
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/package-with-bugs-property-email/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "package-with-bugs-property-email",
+  "version": "1.0.0",
+  "repository": "https://github.com/example/package-with-bugs-property-email",
+  "bugs": {"email": "issues@example.com"},
+  "main": "main"
+}
\ No newline at end of file
diff --git a/packages/settings-view/spec/fixtures/package-with-bugs-property-url-string/package.json b/packages/settings-view/spec/fixtures/package-with-bugs-property-url-string/package.json
new file mode 100644
index 000000000..38c5d34cc
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/package-with-bugs-property-url-string/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "package-with-bugs-property-url-string",
+  "version": "1.0.0",
+  "repository": "https://github.com/example/package-with-bugs-property-url-string",
+  "bugs": "https://example.com/custom-issue-tracker/new",
+  "main": "main"
+}
\ No newline at end of file
diff --git a/packages/settings-view/spec/fixtures/package-with-bugs-property-url/package.json b/packages/settings-view/spec/fixtures/package-with-bugs-property-url/package.json
new file mode 100644
index 000000000..62e5b23e9
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/package-with-bugs-property-url/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "package-with-bugs-property-url",
+  "version": "1.0.0",
+  "repository": "https://github.com/example/package-with-bugs-property-url",
+  "bugs": {"url": "https://example.com/custom-issue-tracker/new", "email": "issues@example.com"},
+  "main": "main"
+}
\ No newline at end of file
diff --git a/packages/settings-view/spec/fixtures/package-with-config/main.coffee b/packages/settings-view/spec/fixtures/package-with-config/main.coffee
new file mode 100644
index 000000000..d9c28f7e5
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/package-with-config/main.coffee
@@ -0,0 +1,5 @@
+module.exports =
+  config:
+    setting:
+      type: 'string'
+      default: 'something'
diff --git a/packages/settings-view/spec/fixtures/package-with-config/package.json b/packages/settings-view/spec/fixtures/package-with-config/package.json
new file mode 100644
index 000000000..5b91ac68b
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/package-with-config/package.json
@@ -0,0 +1,6 @@
+{
+  "name": "package-with-config",
+  "version": "1.0.0",
+  "repository": "https://github.com/example/package-with-config",
+  "main": "main"
+}
diff --git a/packages/settings-view/spec/fixtures/package-with-readme/README.md b/packages/settings-view/spec/fixtures/package-with-readme/README.md
new file mode 100644
index 000000000..99886cf62
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/package-with-readme/README.md
@@ -0,0 +1,12 @@
+I am a Readme!
+
+*   [ ] I'm a not completed task
+*   [x] I'm completed
+
+
+![AbsoluteImage](https://example.com/static/image.jpg)
+![RelativeImage](static/image.jpg)
+![Base64Image](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==)
+
+<script>alert('oh, hai');</script>
+<iframe src="https://pulsar-edit.dev"></iframe>
diff --git a/packages/settings-view/spec/fixtures/package-with-readme/package.json b/packages/settings-view/spec/fixtures/package-with-readme/package.json
new file mode 100644
index 000000000..0685849cc
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/package-with-readme/package.json
@@ -0,0 +1,6 @@
+{
+  "name": "package-with-readme",
+  "version": "1.0.0",
+  "repository": "https://github.com/example/package-with-readme",
+  "main": "main"
+}
diff --git a/packages/settings-view/spec/fixtures/package-without-bugs-property/package.json b/packages/settings-view/spec/fixtures/package-without-bugs-property/package.json
new file mode 100644
index 000000000..ca73fd425
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/package-without-bugs-property/package.json
@@ -0,0 +1,6 @@
+{
+  "name": "package-without-bugs-property",
+  "version": "1.0.0",
+  "repository": "https://github.com/example/package-without-bugs-property",
+  "main": "main"
+}
diff --git a/packages/settings-view/spec/fixtures/syntax-theme-with-config/main.coffee b/packages/settings-view/spec/fixtures/syntax-theme-with-config/main.coffee
new file mode 100644
index 000000000..d9c28f7e5
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/syntax-theme-with-config/main.coffee
@@ -0,0 +1,5 @@
+module.exports =
+  config:
+    setting:
+      type: 'string'
+      default: 'something'
diff --git a/packages/settings-view/spec/fixtures/syntax-theme-with-config/package.json b/packages/settings-view/spec/fixtures/syntax-theme-with-config/package.json
new file mode 100644
index 000000000..f16a8aba1
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/syntax-theme-with-config/package.json
@@ -0,0 +1,6 @@
+{
+  "theme": "syntax",
+  "name": "syntax-theme-with-config",
+  "version": "1.0.0",
+  "main": "./main"
+}
diff --git a/packages/settings-view/spec/fixtures/ui-theme-with-config/main.coffee b/packages/settings-view/spec/fixtures/ui-theme-with-config/main.coffee
new file mode 100644
index 000000000..d9c28f7e5
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/ui-theme-with-config/main.coffee
@@ -0,0 +1,5 @@
+module.exports =
+  config:
+    setting:
+      type: 'string'
+      default: 'something'
diff --git a/packages/settings-view/spec/fixtures/ui-theme-with-config/package.json b/packages/settings-view/spec/fixtures/ui-theme-with-config/package.json
new file mode 100644
index 000000000..f51ad7a2c
--- /dev/null
+++ b/packages/settings-view/spec/fixtures/ui-theme-with-config/package.json
@@ -0,0 +1,6 @@
+{
+  "theme": "ui",
+  "name": "ui-theme-with-config",
+  "version": "1.0.0",
+  "main": "./main"
+}
diff --git a/packages/settings-view/spec/general-panel-spec.coffee b/packages/settings-view/spec/general-panel-spec.coffee
new file mode 100644
index 000000000..0f8657531
--- /dev/null
+++ b/packages/settings-view/spec/general-panel-spec.coffee
@@ -0,0 +1,90 @@
+GeneralPanel = require '../lib/general-panel'
+
+describe "GeneralPanel", ->
+  panel = null
+
+  getValueForId = (id) ->
+    element = panel.element.querySelector("##{id.replace(/\./g, '\\.')}")
+    if element.tagName is "INPUT"
+      element.checked
+    else if element.tagName is "SELECT"
+      element.value
+    else
+      element.getModel().getText()
+
+  setValueForId = (id, value) ->
+    element = panel.element.querySelector("##{id.replace(/\./g, '\\.')}")
+    if element.tagName is "INPUT"
+      element.checked = value
+      element.dispatchEvent(new Event('change', {bubbles: true}))
+    else if element.tagName is "SELECT"
+      element.value = value
+      element.dispatchEvent(new Event('change', {bubbles: true}))
+    else
+      element.getModel().setText(value?.toString())
+      window.advanceClock(10000) # wait for contents-modified to be triggered
+
+  beforeEach ->
+    atom.config.set('core.enum', 4)
+    atom.config.set('core.int', 22)
+    atom.config.set('core.float', 0.1)
+
+    atom.config.setSchema('', type: 'object')
+    atom.config.setSchema('core.enum',
+      type: 'integer'
+      default: 2
+      enum: [2, 4, 6, 8]
+    )
+
+    panel = new GeneralPanel()
+
+  it "automatically binds named fields to their corresponding config keys", ->
+    expect(getValueForId('core.enum')).toBe '4'
+    expect(getValueForId('core.int')).toBe '22'
+    expect(getValueForId('core.float')).toBe '0.1'
+
+    atom.config.set('core.enum', 6)
+    atom.config.set('core.int', 222)
+    atom.config.set('core.float', 0.11)
+
+    expect(getValueForId('core.enum')).toBe '6'
+    expect(getValueForId('core.int')).toBe '222'
+    expect(getValueForId('core.float')).toBe '0.11'
+
+    setValueForId('core.enum', '2')
+    setValueForId('core.int', 90)
+    setValueForId('core.float', 89.2)
+
+    expect(atom.config.get('core.enum')).toBe 2
+    expect(atom.config.get('core.int')).toBe 90
+    expect(atom.config.get('core.float')).toBe 89.2
+
+    setValueForId('core.int', '')
+    setValueForId('core.float', '')
+
+    expect(atom.config.get('core.int')).toBeUndefined()
+    expect(atom.config.get('core.float')).toBeUndefined()
+
+  it "does not save the config value until it has been changed to a new value", ->
+    observeHandler = jasmine.createSpy("observeHandler")
+    atom.config.observe "core.int", observeHandler
+    observeHandler.reset()
+
+    window.advanceClock(10000) # wait for contents-modified to be triggered
+    expect(observeHandler).not.toHaveBeenCalled()
+
+    setValueForId('core.int', 2)
+    expect(observeHandler).toHaveBeenCalled()
+    observeHandler.reset()
+
+    setValueForId('core.int', 2)
+    expect(observeHandler).not.toHaveBeenCalled()
+
+  it "does not update the editor text unless the value it parses to changes", ->
+    setValueForId('core.int', "2.")
+    expect(atom.config.get('core.int')).toBe 2
+    expect(getValueForId('core.int')).toBe '2.'
+
+  it "shows the package settings notes for core and editor settings", ->
+    expect(panel.element.querySelector('#core-settings-note')).toExist()
+    expect(panel.element.querySelector('#core-settings-note').textContent).toContain('their package card in')
diff --git a/packages/settings-view/spec/install-panel-spec.coffee b/packages/settings-view/spec/install-panel-spec.coffee
new file mode 100644
index 000000000..3d9bd2087
--- /dev/null
+++ b/packages/settings-view/spec/install-panel-spec.coffee
@@ -0,0 +1,113 @@
+InstallPanel = require '../lib/install-panel'
+PackageManager = require '../lib/package-manager'
+SettingsView = require '../lib/settings-view'
+
+describe 'InstallPanel', ->
+  beforeEach ->
+    settingsView = new SettingsView()
+    @packageManager = new PackageManager()
+    @panel = new InstallPanel(settingsView, @packageManager)
+
+  describe "when the packages button is clicked", ->
+    beforeEach ->
+      spyOn(@panel, 'search')
+      @panel.refs.searchEditor.setText('something')
+
+    it "performs a search for the contents of the input", ->
+      @panel.refs.searchPackagesButton.click()
+      expect(@panel.searchType).toBe 'packages'
+      expect(@panel.search).toHaveBeenCalledWith 'something'
+      expect(@panel.search.callCount).toBe 1
+
+      @panel.refs.searchPackagesButton.click()
+      expect(@panel.searchType).toBe 'packages'
+      expect(@panel.search).toHaveBeenCalledWith 'something'
+      expect(@panel.search.callCount).toBe 2
+
+  describe "when the themes button is clicked", ->
+    beforeEach ->
+      spyOn(@panel, 'search')
+      @panel.refs.searchEditor.setText('something')
+
+    it "performs a search for the contents of the input", ->
+      @panel.refs.searchThemesButton.click()
+      expect(@panel.searchType).toBe 'themes'
+      expect(@panel.search.callCount).toBe 1
+      expect(@panel.search).toHaveBeenCalledWith 'something'
+
+      @panel.refs.searchThemesButton.click()
+      expect(@panel.searchType).toBe 'themes'
+      expect(@panel.search.callCount).toBe 2
+
+  describe "when the buttons are toggled", ->
+    beforeEach ->
+      spyOn(@panel, 'search')
+      @panel.refs.searchEditor.setText('something')
+
+    it "performs a search for the contents of the input", ->
+      @panel.refs.searchThemesButton.click()
+      expect(@panel.searchType).toBe 'themes'
+      expect(@panel.search.callCount).toBe 1
+      expect(@panel.search).toHaveBeenCalledWith 'something'
+
+      @panel.refs.searchPackagesButton.click()
+      expect(@panel.searchType).toBe 'packages'
+      expect(@panel.search.callCount).toBe 2
+
+      @panel.refs.searchThemesButton.click()
+      expect(@panel.searchType).toBe 'themes'
+      expect(@panel.search.callCount).toBe 3
+
+  describe "searching packages", ->
+    it "displays the packages in the order returned", ->
+      spyOn(@panel.client, 'search').andCallFake -> Promise.resolve([{name: 'not-first'}, {name: 'first'}])
+      spyOn(@panel, 'getPackageCardView').andCallThrough()
+
+      waitsForPromise =>
+        @panel.search('first')
+
+      runs ->
+        expect(@panel.getPackageCardView.argsForCall[0][0].name).toEqual 'not-first'
+        expect(@panel.getPackageCardView.argsForCall[1][0].name).toEqual 'first'
+
+  describe "searching git packages", ->
+    beforeEach ->
+      spyOn(@panel, 'showGitInstallPackageCard').andCallThrough()
+
+    it "shows a git installation card with git specific info for ssh URLs", ->
+      query = 'git@github.com:user/repo.git'
+      @panel.performSearchForQuery(query)
+      args = @panel.showGitInstallPackageCard.argsForCall[0][0]
+      expect(args.name).toEqual query
+      expect(args.gitUrlInfo).toBeTruthy()
+
+    it "shows a git installation card with git specific info for https URLs", ->
+      query = 'https://github.com/user/repo.git'
+      @panel.performSearchForQuery(query)
+      args = @panel.showGitInstallPackageCard.argsForCall[0][0]
+      expect(args.name).toEqual query
+      expect(args.gitUrlInfo).toBeTruthy()
+
+    it "shows a git installation card with git specific info for shortcut URLs", ->
+      query = 'user/repo'
+      @panel.performSearchForQuery(query)
+      args = @panel.showGitInstallPackageCard.argsForCall[0][0]
+      expect(args.name).toEqual query
+      expect(args.gitUrlInfo).toBeTruthy()
+
+    it "doesn't show a git installation card for normal packages", ->
+      query = 'this-package-is-so-normal'
+      @panel.performSearchForQuery(query)
+      expect(@panel.showGitInstallPackageCard).not.toHaveBeenCalled()
+
+    describe "when a package with the same gitUrlInfo property is installed", ->
+      beforeEach ->
+        @gitUrlInfo = jasmine.createSpy('gitUrlInfo')
+        @panel.showGitInstallPackageCard(gitUrlInfo: @gitUrlInfo)
+
+      it "replaces the package card with the newly installed pack object", ->
+        newPack =
+          gitUrlInfo: @gitUrlInfo
+        spyOn(@panel, 'updateGitPackageCard')
+        @packageManager.emitter.emit('package-installed', {pack: newPack})
+        expect(@panel.updateGitPackageCard).toHaveBeenCalledWith newPack
diff --git a/packages/settings-view/spec/installed-package-view-spec.coffee b/packages/settings-view/spec/installed-package-view-spec.coffee
new file mode 100644
index 000000000..1cc93e26e
--- /dev/null
+++ b/packages/settings-view/spec/installed-package-view-spec.coffee
@@ -0,0 +1,338 @@
+path = require 'path'
+PackageDetailView = require '../lib/package-detail-view'
+PackageManager = require '../lib/package-manager'
+SettingsView = require '../lib/settings-view'
+PackageKeymapView = require '../lib/package-keymap-view'
+PackageSnippetsView = require '../lib/package-snippets-view'
+_ = require 'underscore-plus'
+SnippetsProvider =
+  getSnippets: -> atom.config.scopedSettingsStore.propertySets
+
+describe "InstalledPackageView", ->
+  beforeEach ->
+    spyOn(PackageManager.prototype, 'loadCompatiblePackageVersion').andCallFake ->
+
+  it "displays the grammars registered by the package", ->
+    settingsPanels = null
+
+    waitsForPromise ->
+      atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'language-test'))
+
+    runs ->
+      pack = atom.packages.getActivePackage('language-test')
+      view = new PackageDetailView(pack, new SettingsView(), new PackageManager(), SnippetsProvider)
+      settingsPanels = view.element.querySelectorAll('.package-grammars .settings-panel')
+
+      waitsFor ->
+        children = Array.from(settingsPanels).map((s) -> s.children.length)
+        childrenCount = children.reduce(((a, b) -> a + b), 0)
+        childrenCount is 2
+
+      expect(settingsPanels[0].querySelector('.grammar-scope').textContent).toBe 'Scope: source.a'
+      expect(settingsPanels[0].querySelector('.grammar-filetypes').textContent).toBe 'File Types: .a, .aa, a'
+
+      expect(settingsPanels[1].querySelector('.grammar-scope').textContent).toBe 'Scope: source.b'
+      expect(settingsPanels[1].querySelector('.grammar-filetypes').textContent).toBe 'File Types: '
+
+      expect(settingsPanels[2]).toBeUndefined()
+
+  it "displays the snippets registered by the package", ->
+    snippetsTable = null
+    snippetsModule = null
+
+    # Relies on behavior not present in the snippets package before 1.33.
+    # TODO: These tests should always run once 1.33 is released.
+    shouldRunScopeTest = parseFloat(atom.getVersion()) >= 1.33
+
+    waitsForPromise ->
+      atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'language-test'))
+
+    waitsForPromise ->
+      atom.packages.activatePackage('snippets').then (p) ->
+        snippetsModule = p.mainModule
+        return unless snippetsModule.provideSnippets().getUnparsedSnippets?
+
+        SnippetsProvider =
+          getSnippets: -> snippetsModule.provideSnippets().getUnparsedSnippets()
+
+    waitsFor 'snippets to load', -> snippetsModule.provideSnippets().bundledSnippetsLoaded()
+
+    runs ->
+      pack = atom.packages.getActivePackage('language-test')
+      view = new PackageDetailView(pack, new SettingsView(), new PackageManager(), SnippetsProvider)
+      snippetsTable = view.element.querySelector('.package-snippets-table tbody')
+
+    waitsFor 'snippets table children to contain 2 items', ->
+      snippetsTable.children.length >= 2
+
+    runs ->
+      expect(snippetsTable.querySelector('tr:nth-child(1) td:nth-child(1)').textContent).toBe 'b'
+      expect(snippetsTable.querySelector('tr:nth-child(1) td:nth-child(2)').textContent).toBe 'BAR'
+      expect(snippetsTable.querySelector('tr:nth-child(1) td.snippet-scope-name').textContent).toBe '.b.source' if shouldRunScopeTest
+
+      expect(snippetsTable.querySelector('tr:nth-child(2) td:nth-child(1)').textContent).toBe 'f'
+      expect(snippetsTable.querySelector('tr:nth-child(2) td:nth-child(2)').textContent).toBe 'FOO'
+      expect(snippetsTable.querySelector('tr:nth-child(2) td.snippet-scope-name').textContent).toBe '.a.source' if shouldRunScopeTest
+
+  describe "when a snippet body is viewed", ->
+    it "shows a tooltip", ->
+      tooltipCalls = []
+      view = null
+      snippetsTable = null
+      snippetsModule = null
+
+      waitsForPromise ->
+        atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'language-test'))
+
+      waitsForPromise ->
+        atom.packages.activatePackage('snippets').then (p) ->
+          snippetsModule = p.mainModule
+          return unless snippetsModule.provideSnippets().getUnparsedSnippets?
+
+          SnippetsProvider =
+            getSnippets: -> snippetsModule.provideSnippets().getUnparsedSnippets()
+
+      waitsFor 'snippets to load', -> snippetsModule.provideSnippets().bundledSnippetsLoaded()
+
+      runs ->
+        pack = atom.packages.getActivePackage('language-test')
+        view = new PackageDetailView(pack, new SettingsView(), new PackageManager(), SnippetsProvider)
+        snippetsTable = view.element.querySelector('.package-snippets-table tbody')
+
+      waitsFor 'snippets table children to contain 2 items', ->
+        snippetsTable.children.length >= 2
+
+      runs ->
+        expect(view.element.ownerDocument.querySelector('.snippet-body-tooltip')).not.toExist()
+
+        view.element.querySelector('.package-snippets-table tbody tr:nth-child(1) td.snippet-body .snippet-view-btn').click()
+        expect(view.element.ownerDocument.querySelector('.snippet-body-tooltip')).toExist()
+
+
+  # Relies on behavior not present in the snippets package before 1.33.
+  # TODO: These tests should always run once 1.33 is released.
+  if parseFloat(atom.getVersion()) >= 1.33
+    describe "when a snippet is copied", ->
+      [pack, card] = []
+      snippetsTable = null
+      snippetsModule = null
+
+      beforeEach ->
+        waitsForPromise ->
+          atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'language-test'))
+
+        waitsForPromise ->
+          atom.packages.activatePackage('snippets').then (p) ->
+            snippetsModule = p.mainModule
+            return unless snippetsModule.provideSnippets().getUnparsedSnippets?
+
+            SnippetsProvider =
+              getSnippets: -> snippetsModule.provideSnippets().getUnparsedSnippets()
+              getUserSnippetsPath: snippetsModule.getUserSnippetsPath()
+
+        waitsFor 'snippets to load', -> snippetsModule.provideSnippets().bundledSnippetsLoaded()
+
+        runs ->
+          pack = atom.packages.getActivePackage('language-test')
+          card = new PackageSnippetsView(pack, SnippetsProvider)
+          snippetsTable = card.element.querySelector('.package-snippets-table tbody')
+
+        waitsFor 'snippets table children to contain 2 items', ->
+          snippetsTable.children.length >= 2
+
+      describe "when the snippets file ends in .cson", ->
+        it "writes a CSON snippet to the clipboard", ->
+          spyOn(SnippetsProvider, 'getUserSnippetsPath').andReturn('snippets.cson')
+          card.element.querySelector('.package-snippets-table tbody tr:nth-child(1) td.snippet-body .snippet-copy-btn').click()
+          expect(atom.clipboard.read()).toBe """
+            \n'.b.source':
+              'BAR':
+                'prefix': 'b'
+                'body': 'bar?\\nline two'\n
+          """
+
+      describe "when the snippets file ends in .json", ->
+        it "writes a JSON snippet to the clipboard", ->
+          spyOn(SnippetsProvider, 'getUserSnippetsPath').andReturn('snippets.json')
+          card.element.querySelector('.package-snippets-table tbody tr:nth-child(1) td.snippet-body .btn:nth-child(2)').click()
+          expect(atom.clipboard.read()).toBe """
+            \n  ".b.source": {
+                "BAR": {
+                  "prefix": "b",
+                  "body": "bar?\\nline two"
+                }
+              }\n
+          """
+
+  describe "when the snippets toggle is clicked", ->
+    it "sets the packagesWithSnippetsDisabled config to include the package name", ->
+      [pack, card] = []
+      snippetsModule = []
+
+      waitsForPromise ->
+        atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'language-test'))
+
+      waitsForPromise ->
+        atom.packages.activatePackage('snippets').then (p) ->
+          snippetsModule = p.mainModule
+          return unless snippetsModule.provideSnippets().getUnparsedSnippets?
+
+          SnippetsProvider =
+            getSnippets: -> snippetsModule.provideSnippets().getUnparsedSnippets()
+
+      waitsFor 'snippets to load', -> snippetsModule.provideSnippets().bundledSnippetsLoaded()
+
+      runs ->
+        pack = atom.packages.getActivePackage('language-test')
+        card = new PackageSnippetsView(pack, SnippetsProvider)
+        jasmine.attachToDOM(card.element)
+
+        card.refs.snippetToggle.click()
+        expect(card.refs.snippetToggle.checked).toBe false
+        expect(_.include(atom.config.get('core.packagesWithSnippetsDisabled') ? [], 'language-test')).toBe true
+
+      waitsFor 'snippets table to update', ->
+        card.refs.snippets.classList.contains('text-subtle')
+
+      runs ->
+        card.refs.snippetToggle.click()
+        expect(card.refs.snippetToggle.checked).toBe true
+        expect(_.include(atom.config.get('core.packagesWithSnippetsDisabled') ? [], 'language-test')).toBe false
+
+      waitsFor 'snippets table to update', ->
+        not card.refs.snippets.classList.contains('text-subtle')
+
+  it "does not display keybindings from other platforms", ->
+    keybindingsTable = null
+
+    waitsForPromise ->
+      atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'language-test'))
+
+    runs ->
+      pack = atom.packages.getActivePackage('language-test')
+      view = new PackageDetailView(pack, new SettingsView(), new PackageManager(), SnippetsProvider)
+      keybindingsTable = view.element.querySelector('.package-keymap-table tbody')
+      expect(keybindingsTable.children.length).toBe 1
+
+  describe "when the keybindings toggle is clicked", ->
+    it "sets the packagesWithKeymapsDisabled config to include the package name", ->
+      waitsForPromise ->
+        atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'language-test'))
+
+      runs ->
+        pack = atom.packages.getActivePackage('language-test')
+        card = new PackageKeymapView(pack)
+        jasmine.attachToDOM(card.element)
+
+        card.refs.keybindingToggle.click()
+        expect(card.refs.keybindingToggle.checked).toBe false
+        expect(_.include(atom.config.get('core.packagesWithKeymapsDisabled') ? [], 'language-test')).toBe true
+
+        if atom.keymaps.build?
+          keybindingRows = card.element.querySelectorAll('.package-keymap-table tbody.text-subtle tr')
+          expect(keybindingRows.length).toBe 1
+
+        card.refs.keybindingToggle.click()
+        expect(card.refs.keybindingToggle.checked).toBe true
+        expect(_.include(atom.config.get('core.packagesWithKeymapsDisabled') ? [], 'language-test')).toBe false
+
+        if atom.keymaps.build?
+          keybindingRows = card.element.querySelectorAll('.package-keymap-table tbody tr')
+          expect(keybindingRows.length).toBe 1
+
+  describe "when a keybinding is copied", ->
+    [pack, card] = []
+
+    beforeEach ->
+      waitsForPromise ->
+        atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'language-test'))
+
+      runs ->
+        pack = atom.packages.getActivePackage('language-test')
+        card = new PackageKeymapView(pack)
+
+    describe "when the keybinding file ends in .cson", ->
+      it "writes a CSON snippet to the clipboard", ->
+        spyOn(atom.keymaps, 'getUserKeymapPath').andReturn 'keymap.cson'
+        card.element.querySelector('.copy-icon').click()
+        expect(atom.clipboard.read()).toBe """
+          'test':
+            'cmd-g': 'language-test:run'
+        """
+
+    describe "when the keybinding file ends in .json", ->
+      it "writes a JSON snippet to the clipboard", ->
+        spyOn(atom.keymaps, 'getUserKeymapPath').andReturn 'keymap.json'
+        card.element.querySelector('.copy-icon').click()
+        expect(atom.clipboard.read()).toBe """
+          "test": {
+            "cmd-g": "language-test:run"
+          }
+        """
+
+  describe "when the package is active", ->
+    it "displays the correct enablement state", ->
+      packageCard = null
+
+      waitsForPromise ->
+        atom.packages.activatePackage('status-bar')
+
+      runs ->
+        expect(atom.packages.isPackageActive('status-bar')).toBe(true)
+        pack = atom.packages.getLoadedPackage('status-bar')
+        view = new PackageDetailView(pack, new SettingsView(), new PackageManager(), SnippetsProvider)
+        packageCard = view.element.querySelector('.package-card')
+
+      runs ->
+        # Trigger observeDisabledPackages() here
+        # because it is not default in specs
+        atom.packages.observeDisabledPackages()
+        atom.packages.disablePackage('status-bar')
+        expect(atom.packages.isPackageDisabled('status-bar')).toBe(true)
+        expect(packageCard.classList.contains('disabled')).toBe(true)
+
+  describe "when the package is not active", ->
+    it "displays the correct enablement state", ->
+      atom.packages.loadPackage('status-bar')
+      expect(atom.packages.isPackageActive('status-bar')).toBe(false)
+      pack = atom.packages.getLoadedPackage('status-bar')
+      view = new PackageDetailView(pack, new SettingsView(), new PackageManager(), SnippetsProvider)
+      packageCard = view.element.querySelector('.package-card')
+
+      # Trigger observeDisabledPackages() here
+      # because it is not default in specs
+      atom.packages.observeDisabledPackages()
+      atom.packages.disablePackage('status-bar')
+      expect(atom.packages.isPackageDisabled('status-bar')).toBe(true)
+      expect(packageCard.classList.contains('disabled')).toBe(true)
+
+    it "still loads the config schema for the package", ->
+      atom.packages.loadPackage(path.join(__dirname, 'fixtures', 'package-with-config'))
+
+      waitsFor ->
+        atom.packages.isPackageLoaded('package-with-config') is true
+
+      runs ->
+        expect(atom.config.get('package-with-config.setting')).toBe undefined
+
+        pack = atom.packages.getLoadedPackage('package-with-config')
+        new PackageDetailView(pack, new SettingsView(), new PackageManager(), SnippetsProvider)
+
+        expect(atom.config.get('package-with-config.setting')).toBe 'something'
+
+  describe "when the package was not installed from atom.io", ->
+    normalizePackageDataReadmeError = 'ERROR: No README data found!'
+
+    it "still displays the Readme", ->
+      atom.packages.loadPackage(path.join(__dirname, 'fixtures', 'package-with-readme'))
+
+      waitsFor ->
+        atom.packages.isPackageLoaded('package-with-readme') is true
+
+      runs ->
+        pack = atom.packages.getLoadedPackage('package-with-readme')
+        expect(pack.metadata.readme).toBe normalizePackageDataReadmeError
+
+        view = new PackageDetailView(pack, new SettingsView(), new PackageManager(), SnippetsProvider)
+        expect(view.refs.sections.querySelector('.package-readme').textContent).not.toBe normalizePackageDataReadmeError
+        expect(view.refs.sections.querySelector('.package-readme').textContent.trim()).toContain 'I am a Readme!'
diff --git a/packages/settings-view/spec/installed-packages-panel-spec.coffee b/packages/settings-view/spec/installed-packages-panel-spec.coffee
new file mode 100644
index 000000000..78000294a
--- /dev/null
+++ b/packages/settings-view/spec/installed-packages-panel-spec.coffee
@@ -0,0 +1,193 @@
+path = require 'path'
+
+fs = require 'fs-plus'
+InstalledPackagesPanel = require '../lib/installed-packages-panel'
+PackageManager = require '../lib/package-manager'
+PackageCard = require '../lib/package-card'
+SettingsView = require '../lib/settings-view'
+
+describe 'InstalledPackagesPanel', ->
+  describe 'when the packages are loading', ->
+    it 'filters packages by name once they have loaded', ->
+      settingsView = new SettingsView
+      @packageManager = new PackageManager
+      @installed = JSON.parse fs.readFileSync(path.join(__dirname, 'fixtures', 'installed.json'))
+      spyOn(@packageManager, 'getOutdated').andReturn new Promise ->
+      spyOn(@packageManager, 'loadCompatiblePackageVersion').andCallFake ->
+      spyOn(@packageManager, 'getInstalled').andReturn Promise.resolve(@installed)
+      @panel = new InstalledPackagesPanel(settingsView, @packageManager)
+      @panel.refs.filterEditor.setText('user-')
+      window.advanceClock(@panel.refs.filterEditor.getBuffer().stoppedChangingDelay)
+
+      waitsFor ->
+        @packageManager.getInstalled.callCount is 1 and @panel.refs.communityCount.textContent.indexOf('…') < 0
+
+      runs ->
+        expect(@panel.refs.communityCount.textContent.trim()).toBe '1/1'
+        expect(@panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+        expect(@panel.refs.coreCount.textContent.trim()).toBe '0/1'
+        expect(@panel.refs.corePackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 0
+
+        expect(@panel.refs.devCount.textContent.trim()).toBe '0/1'
+        expect(@panel.refs.devPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 0
+
+  describe 'when the packages have finished loading', ->
+    beforeEach ->
+      settingsView = new SettingsView
+      @packageManager = new PackageManager
+      @installed = JSON.parse fs.readFileSync(path.join(__dirname, 'fixtures', 'installed.json'))
+      spyOn(@packageManager, 'getOutdated').andReturn new Promise ->
+      spyOn(@packageManager, 'loadCompatiblePackageVersion').andCallFake ->
+      spyOn(@packageManager, 'getInstalled').andReturn Promise.resolve(@installed)
+      @panel = new InstalledPackagesPanel(settingsView, @packageManager)
+
+      waitsFor ->
+        @packageManager.getInstalled.callCount is 1 and @panel.refs.communityCount.textContent.indexOf('…') < 0
+
+    it 'shows packages', ->
+      expect(@panel.refs.communityCount.textContent.trim()).toBe '1'
+      expect(@panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+      expect(@panel.refs.coreCount.textContent.trim()).toBe '1'
+      expect(@panel.refs.corePackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+      expect(@panel.refs.devCount.textContent.trim()).toBe '1'
+      expect(@panel.refs.devPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+    it 'filters packages by name', ->
+      @panel.refs.filterEditor.setText('user-')
+      window.advanceClock(@panel.refs.filterEditor.getBuffer().stoppedChangingDelay)
+      expect(@panel.refs.communityCount.textContent.trim()).toBe '1/1'
+      expect(@panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+      expect(@panel.refs.coreCount.textContent.trim()).toBe '0/1'
+      expect(@panel.refs.corePackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 0
+
+      expect(@panel.refs.devCount.textContent.trim()).toBe '0/1'
+      expect(@panel.refs.devPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 0
+
+    it 'adds newly installed packages to the list', ->
+      [installCallback] = []
+      spyOn(@packageManager, 'runCommand').andCallFake (args, callback) ->
+        installCallback = callback
+        onWillThrowError: ->
+      spyOn(atom.packages, 'activatePackage').andCallFake (name) =>
+        @installed.user.push {name}
+
+      expect(@panel.refs.communityCount.textContent.trim()).toBe '1'
+      expect(@panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+      @packageManager.install({name: 'another-user-package'})
+      installCallback(0, '', '')
+
+      advanceClock InstalledPackagesPanel.loadPackagesDelay()
+      waits 1
+      runs ->
+        expect(@panel.refs.communityCount.textContent.trim()).toBe '2'
+        expect(@panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 2
+
+    it 'removes uninstalled packages from the list', ->
+      [uninstallCallback] = []
+      spyOn(@packageManager, 'runCommand').andCallFake (args, callback) ->
+        uninstallCallback = callback
+        onWillThrowError: ->
+      spyOn(@packageManager, 'unload').andCallFake (name) =>
+        @installed.user = []
+
+      expect(@panel.refs.communityCount.textContent.trim()).toBe '1'
+      expect(@panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+      @packageManager.uninstall({name: 'user-package'})
+      uninstallCallback(0, '', '')
+
+      advanceClock InstalledPackagesPanel.loadPackagesDelay()
+      waits 1
+      runs ->
+        expect(@panel.refs.communityCount.textContent.trim()).toBe '0'
+        expect(@panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 0
+
+  describe 'expanding and collapsing sub-sections', ->
+    beforeEach ->
+      settingsView = new SettingsView
+      @packageManager = new PackageManager
+      @installed = JSON.parse fs.readFileSync(path.join(__dirname, 'fixtures', 'installed.json'))
+      spyOn(@packageManager, 'getOutdated').andReturn new Promise ->
+      spyOn(@packageManager, 'loadCompatiblePackageVersion').andCallFake ->
+      spyOn(@packageManager, 'getInstalled').andReturn Promise.resolve(@installed)
+      @panel = new InstalledPackagesPanel(settingsView, @packageManager)
+
+      waitsFor ->
+        @packageManager.getInstalled.callCount is 1 and @panel.refs.communityCount.textContent.indexOf('…') < 0
+
+    it 'collapses and expands a sub-section if its header is clicked', ->
+      @panel.element.querySelector('.sub-section.installed-packages .sub-section-heading').click()
+      expect(@panel.element.querySelector('.sub-section.installed-packages')).toHaveClass 'collapsed'
+
+      expect(@panel.element.querySelector('.sub-section.core-packages')).not.toHaveClass 'collapsed'
+      expect(@panel.element.querySelector('.sub-section.dev-packages')).not.toHaveClass 'collapsed'
+
+      @panel.element.querySelector('.sub-section.installed-packages .sub-section-heading').click()
+      expect(@panel.element.querySelector('.sub-section.installed-packages')).not.toHaveClass 'collapsed'
+
+    it 'can collapse and expand any of the sub-sections', ->
+      expect(@panel.element.querySelectorAll('.sub-section-heading.has-items').length).toBe 3
+
+      for element in @panel.element.querySelectorAll('.sub-section-heading.has-items')
+        element.click()
+
+      expect(@panel.element.querySelector('.sub-section.installed-packages')).toHaveClass 'collapsed'
+      expect(@panel.element.querySelector('.sub-section.core-packages')).toHaveClass 'collapsed'
+      expect(@panel.element.querySelector('.sub-section.dev-packages')).toHaveClass 'collapsed'
+
+      for element in @panel.element.querySelectorAll('.sub-section-heading.has-items')
+        element.click()
+
+      expect(@panel.element.querySelector('.sub-section.installed-packages')).not.toHaveClass 'collapsed'
+      expect(@panel.element.querySelector('.sub-section.core-packages')).not.toHaveClass 'collapsed'
+      expect(@panel.element.querySelector('.sub-section.dev-packages')).not.toHaveClass 'collapsed'
+
+    it 'can collapse sub-sections when filtering', ->
+      @panel.refs.filterEditor.setText('user-')
+      window.advanceClock(@panel.refs.filterEditor.getBuffer().stoppedChangingDelay)
+
+      hasItems = @panel.element.querySelectorAll('.sub-section-heading.has-items')
+      expect(hasItems.length).toBe 1
+      expect(hasItems[0].textContent).toMatch /Community Packages/
+
+  describe 'when there are no packages', ->
+    beforeEach ->
+      settingsView = new SettingsView
+      @packageManager = new PackageManager
+      @installed =
+        dev: []
+        user: []
+        core: []
+      spyOn(@packageManager, 'getOutdated').andReturn new Promise ->
+      spyOn(@packageManager, 'loadCompatiblePackageVersion').andCallFake ->
+      spyOn(@packageManager, 'getInstalled').andReturn Promise.resolve(@installed)
+      @panel = new InstalledPackagesPanel(settingsView, @packageManager)
+
+      waitsFor ->
+        @packageManager.getInstalled.callCount is 1 and @panel.refs.communityCount.textContent.indexOf('…') < 0
+
+    it 'has a count of zero in all headings', ->
+      expect(@panel.element.querySelector('.section-heading-count').textContent).toMatch /^0+$/
+      expect(@panel.element.querySelectorAll('.sub-section .icon-package').length).toBe 4
+      expect(@panel.element.querySelectorAll('.sub-section .icon-package.has-items').length).toBe 0
+
+    it 'can not collapse and expand any of the sub-sections', ->
+      for element in @panel.element.querySelectorAll('.sub-section .icon-package')
+        element.click()
+
+      expect(@panel.element.querySelector('.sub-section.installed-packages')).not.toHaveClass 'collapsed'
+      expect(@panel.element.querySelector('.sub-section.core-packages')).not.toHaveClass 'collapsed'
+      expect(@panel.element.querySelector('.sub-section.dev-packages')).not.toHaveClass 'collapsed'
+
+    it 'does not allow collapsing on any section when filtering', ->
+      @panel.refs.filterEditor.setText('user-')
+      window.advanceClock(@panel.refs.filterEditor.getBuffer().stoppedChangingDelay)
+
+      expect(@panel.element.querySelector('.section-heading-count').textContent).toMatch /^(0\/0)+$/
+      expect(@panel.element.querySelectorAll('.sub-section .icon-package').length).toBe 4
+      expect(@panel.element.querySelectorAll('.sub-section .icon-paintcan.has-items').length).toBe 0
diff --git a/packages/settings-view/spec/keybindings-panel-spec.coffee b/packages/settings-view/spec/keybindings-panel-spec.coffee
new file mode 100644
index 000000000..8e9ed3dad
--- /dev/null
+++ b/packages/settings-view/spec/keybindings-panel-spec.coffee
@@ -0,0 +1,132 @@
+path = require 'path'
+KeybindingsPanel = require '../lib/keybindings-panel'
+
+describe "KeybindingsPanel", ->
+  [keyBindings, panel] = []
+
+  beforeEach ->
+    expect(atom.keymaps).toBeDefined()
+    keySource = "#{atom.getLoadSettings().resourcePath}#{path.sep}keymaps"
+    keyBindings = [
+      {
+        source: keySource
+        keystrokes: 'ctrl-a'
+        command: 'core:select-all'
+        selector: '.editor, .platform-test'
+      }
+      {
+        source: keySource
+        keystrokes: 'ctrl-u'
+        command: 'core:undo'
+        selector: ".platform-test"
+      }
+      {
+        source: keySource
+        keystrokes: 'ctrl-u'
+        command: 'core:undo'
+        selector: ".platform-a, .platform-b"
+      }
+      {
+        source: keySource
+        keystrokes: 'shift-\\ \\'
+        command: 'core:undo'
+        selector: '.editor'
+      }
+      {
+        source: keySource
+        keystrokes: 'ctrl-z\''
+        command: 'core:toggle'
+        selector: 'atom-text-editor[data-grammar~=\'css\']'
+      }
+    ]
+    spyOn(atom.keymaps, 'getKeyBindings').andReturn(keyBindings)
+    panel = new KeybindingsPanel
+
+  it "loads and displays core key bindings", ->
+    expect(panel.refs.keybindingRows.children.length).toBe 3
+
+    row = panel.refs.keybindingRows.children[0]
+    expect(row.querySelector('.keystroke').textContent).toBe 'ctrl-a'
+    expect(row.querySelector('.command').textContent).toBe 'core:select-all'
+    expect(row.querySelector('.source').textContent).toBe 'Core'
+    expect(row.querySelector('.selector').textContent).toBe '.editor, .platform-test'
+
+  describe "when a keybinding is copied", ->
+    describe "when the keybinding file ends in .cson", ->
+      it "writes a CSON snippet to the clipboard", ->
+        spyOn(atom.keymaps, 'getUserKeymapPath').andReturn 'keymap.cson'
+        panel.element.querySelector('.copy-icon').click()
+        expect(atom.clipboard.read()).toBe """
+          '.editor, .platform-test':
+            'ctrl-a': 'core:select-all'
+        """
+
+    describe "when the keybinding file ends in .json", ->
+      it "writes a JSON snippet to the clipboard", ->
+        spyOn(atom.keymaps, 'getUserKeymapPath').andReturn 'keymap.json'
+        panel.element.querySelector('.copy-icon').click()
+        expect(atom.clipboard.read()).toBe """
+          ".editor, .platform-test": {
+            "ctrl-a": "core:select-all"
+          }
+        """
+
+    describe "when the keybinding contains special characters", ->
+      it "escapes the backslashes before copying", ->
+        spyOn(atom.keymaps, 'getUserKeymapPath').andReturn 'keymap.cson'
+        panel.element.querySelectorAll('.copy-icon')[2].click()
+        expect(atom.clipboard.read()).toBe """
+          '.editor':
+            'shift-\\\\ \\\\': 'core:undo'
+        """
+
+      it "escapes the single quotes before copying", ->
+        spyOn(atom.keymaps, 'getUserKeymapPath').andReturn 'keymap.cson'
+        panel.element.querySelectorAll('.copy-icon')[1].click()
+        expect(atom.clipboard.read()).toBe """
+          'atom-text-editor[data-grammar~=\\'css\\']':
+            'ctrl-z\\'': 'core:toggle'
+        """
+
+  describe "when the key bindings change", ->
+    it "reloads the key bindings", ->
+      keyBindings.push
+        source: atom.keymaps.getUserKeymapPath(), keystrokes: 'ctrl-b', command: 'core:undo', selector: '.editor'
+      atom.keymaps.emitter.emit 'did-reload-keymap'
+
+      waitsFor "the new keybinding to show up in the keybinding panel", ->
+        panel.refs.keybindingRows.children.length is 4
+
+      runs ->
+        row = panel.refs.keybindingRows.children[1]
+        expect(row.querySelector('.keystroke').textContent).toBe 'ctrl-b'
+        expect(row.querySelector('.command').textContent).toBe 'core:undo'
+        expect(row.querySelector('.source').textContent).toBe 'User'
+        expect(row.querySelector('.selector').textContent).toBe '.editor'
+
+  describe "when searching key bindings", ->
+    it "find case-insensitive results", ->
+      keyBindings.push
+        source: "#{atom.getLoadSettings().resourcePath}#{path.sep}keymaps", keystrokes: 'F11', command: 'window:toggle-full-screen', selector: 'body'
+      atom.keymaps.emitter.emit 'did-reload-keymap'
+
+      panel.filterKeyBindings keyBindings, 'f11'
+
+      expect(panel.refs.keybindingRows.children.length).toBe 1
+
+      row = panel.refs.keybindingRows.children[0]
+      expect(row.querySelector('.keystroke').textContent).toBe 'F11'
+      expect(row.querySelector('.command').textContent).toBe 'window:toggle-full-screen'
+      expect(row.querySelector('.source').textContent).toBe 'Core'
+      expect(row.querySelector('.selector').textContent).toBe 'body'
+
+    it "perform a fuzzy match for each keyword", ->
+      panel.filterKeyBindings keyBindings, 'core ctrl-a'
+
+      expect(panel.refs.keybindingRows.children.length).toBe 1
+
+      row = panel.refs.keybindingRows.children[0]
+      expect(row.querySelector('.keystroke').textContent).toBe 'ctrl-a'
+      expect(row.querySelector('.command').textContent).toBe 'core:select-all'
+      expect(row.querySelector('.source').textContent).toBe 'Core'
+      expect(row.querySelector('.selector').textContent).toBe '.editor, .platform-test'
diff --git a/packages/settings-view/spec/list-spec.coffee b/packages/settings-view/spec/list-spec.coffee
new file mode 100644
index 000000000..c75779e9b
--- /dev/null
+++ b/packages/settings-view/spec/list-spec.coffee
@@ -0,0 +1,35 @@
+List = require '../lib/list'
+
+describe 'List', ->
+  list = null
+
+  beforeEach ->
+    list = new List('name')
+
+  it 'emits add and remove events when setting items', ->
+    addHandler = jasmine.createSpy()
+    removeHandler = jasmine.createSpy()
+    list.onDidAddItem(addHandler)
+    list.onDidRemoveItem(removeHandler)
+
+    items = [{name: 'one', text: 'a'}, {name: 'two', text: 'b'}]
+    list.setItems(items)
+    expect(addHandler.callCount).toBe 2
+    expect(removeHandler.callCount).toBe 0
+
+    addHandler.reset()
+    removeHandler.reset()
+
+    items = [{name: 'three', text: 'c'}, {name: 'two', text: 'b'}]
+    list.setItems(items)
+    expect(addHandler.callCount).toBe 1
+    expect(removeHandler.callCount).toBe 1
+    expect(addHandler.mostRecentCall.args[0]).toEqual {name: 'three', text: 'c'}
+    expect(removeHandler.mostRecentCall.args[0]).toEqual {name: 'one', text: 'a'}
+    expect(list.getItems()).toEqual items
+
+    addHandler.reset()
+    removeHandler.reset()
+    items.push {name: 'four'}
+    list.setItems(items)
+    expect(addHandler.callCount).toBe 1
diff --git a/packages/settings-view/spec/list-view-spec.coffee b/packages/settings-view/spec/list-view-spec.coffee
new file mode 100644
index 000000000..000a604e1
--- /dev/null
+++ b/packages/settings-view/spec/list-view-spec.coffee
@@ -0,0 +1,67 @@
+List = require '../lib/list'
+ListView = require '../lib/list-view'
+
+describe 'ListView', ->
+  [list, view, container] = []
+
+  beforeEach ->
+    list = new List('name')
+    container = document.createElement('div')
+    view = new ListView list, container, (item) ->
+      element = document.createElement('div')
+      element.classList.add(item.name)
+      element.textContent = "#{item.name}|#{item.text}"
+      {element, destroy: -> element.remove()}
+
+  it 'updates the list when the items are changed', ->
+    expect(container.children.length).toBe 0
+
+    items = [{name: 'one', text: 'a'}, {name: 'two', text: 'b'}]
+    list.setItems(items)
+    expect(container.children.length).toBe 2
+    expect(container.querySelector('.one').textContent).toBe 'one|a'
+    expect(container.querySelector('.two').textContent).toBe 'two|b'
+
+    items = [{name: 'three', text: 'c'}, {name: 'two', text: 'b'}]
+    list.setItems(items)
+    expect(container.children.length).toBe 2
+    expect(container.querySelector('.one')).not.toExist()
+    expect(container.querySelector('.two').textContent).toBe 'two|b'
+    expect(container.querySelector('.three').textContent).toBe 'three|c'
+
+  it 'filters views', ->
+    items = [
+      {name: 'one', text: '', filterText: 'x'},
+      {name: 'two', text: '', filterText: 'y'}
+      {name: 'three', text: '', filterText: 'x'}
+      {name: 'four', text: '', filterText: 'z'}
+    ]
+
+    list.setItems(items)
+    views = view.filterViews (item) -> item.filterText is 'x'
+
+    expect(views).toHaveLength 2
+    expect(views[0].element.textContent).toBe 'one|'
+    expect(views[1].element.textContent).toBe 'three|'
+
+  it 'filters views after an update', ->
+    items = [
+      {name: 'one', text: '', filterText: 'x'},
+      {name: 'two', text: '', filterText: 'y'}
+      {name: 'three', text: '', filterText: 'x'}
+      {name: 'four', text: '', filterText: 'z'}
+    ]
+    list.setItems(items)
+
+    items = [
+      {name: 'one', text: '', filterText: 'x'},
+      {name: 'two', text: '', filterText: 'y'}
+      {name: 'three', text: '', filterText: 'x'}
+      {name: 'four', text: '', filterText: 'z'}
+    ]
+    list.setItems(items)
+    views = view.filterViews (item) -> item.filterText is 'x'
+
+    expect(views).toHaveLength 2
+    expect(views[0].element.textContent).toBe 'one|'
+    expect(views[1].element.textContent).toBe 'three|'
diff --git a/packages/settings-view/spec/package-card-spec.coffee b/packages/settings-view/spec/package-card-spec.coffee
new file mode 100644
index 000000000..82d91fde6
--- /dev/null
+++ b/packages/settings-view/spec/package-card-spec.coffee
@@ -0,0 +1,384 @@
+path = require 'path'
+PackageCard = require '../lib/package-card'
+PackageManager = require '../lib/package-manager'
+SettingsView = require '../lib/settings-view'
+
+describe "PackageCard", ->
+  setPackageStatusSpies = (opts) ->
+    spyOn(PackageCard.prototype, 'isInstalled').andReturn(opts.installed)
+    spyOn(PackageCard.prototype, 'isDisabled').andReturn(opts.disabled)
+    spyOn(PackageCard.prototype, 'hasSettings').andReturn(opts.hasSettings)
+
+  [card, packageManager] = []
+
+  beforeEach ->
+    packageManager = new PackageManager()
+    spyOn(packageManager, 'runCommand')
+
+  it "doesn't show the disable control for a theme", ->
+    setPackageStatusSpies {installed: true, disabled: false}
+    card = new PackageCard({theme: 'syntax', name: 'test-theme'}, new SettingsView(), packageManager)
+    jasmine.attachToDOM(card.element)
+    expect(card.refs.enablementButton).not.toBeVisible()
+
+  it "doesn't show the status indicator for a theme", ->
+    setPackageStatusSpies {installed: true, disabled: false}
+    card = new PackageCard {theme: 'syntax', name: 'test-theme'}, new SettingsView(), packageManager
+    jasmine.attachToDOM(card.element)
+    expect(card.refs.statusIndicatorButton).not.toBeVisible()
+
+  it "doesn't show the settings button for a theme", ->
+    setPackageStatusSpies {installed: true, disabled: false}
+    card = new PackageCard {theme: 'syntax', name: 'test-theme'}, new SettingsView(), packageManager
+    jasmine.attachToDOM(card.element)
+    expect(card.refs.settingsButton).not.toBeVisible()
+
+  it "doesn't show the settings button on the settings view", ->
+    setPackageStatusSpies {installed: true, disabled: false, hasSettings: true}
+    card = new PackageCard {name: 'test-package'}, new SettingsView(), packageManager, {onSettingsView: true}
+    jasmine.attachToDOM(card.element)
+    expect(card.refs.settingsButton).not.toBeVisible()
+
+  it "removes the settings button if a package has no settings", ->
+    setPackageStatusSpies {installed: true, disabled: false, hasSettings: false}
+    card = new PackageCard {name: 'test-package'}, new SettingsView(), packageManager
+    jasmine.attachToDOM(card.element)
+    expect(card.refs.settingsButton).not.toBeVisible()
+
+  it "removes the uninstall button if a package has is a bundled package", ->
+    setPackageStatusSpies {installed: true, disabled: false, hasSettings: true}
+    card = new PackageCard {name: 'find-and-replace'}, new SettingsView(), packageManager
+    jasmine.attachToDOM(card.element)
+    expect(card.refs.uninstallButton).not.toBeVisible()
+
+  it "displays the new version in the update button", ->
+    setPackageStatusSpies {installed: true, disabled: false, hasSettings: true}
+    card = new PackageCard {name: 'find-and-replace', version: '1.0.0', latestVersion: '1.2.0'}, new SettingsView(), packageManager
+    jasmine.attachToDOM(card.element)
+    expect(card.refs.updateButton).toBeVisible()
+    expect(card.refs.updateButton.textContent).toContain 'Update to 1.2.0'
+
+  it "displays the new version in the update button when the package is disabled", ->
+    setPackageStatusSpies {installed: true, disabled: true, hasSettings: true}
+    card = new PackageCard {name: 'find-and-replace', version: '1.0.0', latestVersion: '1.2.0'}, new SettingsView(), packageManager
+    jasmine.attachToDOM(card.element)
+    expect(card.refs.updateButton).toBeVisible()
+    expect(card.refs.updateButton.textContent).toContain 'Update to 1.2.0'
+
+  it "shows the author details", ->
+    authorName = "authorName"
+    pack =
+      name: 'some-package'
+      version: '0.1.0'
+      repository: "https://github.com/#{authorName}/some-package"
+    card = new PackageCard(pack, new SettingsView(), packageManager)
+
+    jasmine.attachToDOM(card.element)
+
+    expect(card.refs.loginLink.textContent).toBe(authorName)
+
+  describe "when the package is not installed", ->
+    it "shows the settings, uninstall, and disable buttons", ->
+      pack =
+        name: 'some-package'
+        version: '0.1.0'
+        repository: 'http://github.com/omgwow/some-package'
+      card = new PackageCard(pack, new SettingsView(), packageManager)
+
+      jasmine.attachToDOM(card.element)
+
+      expect(card.refs.installButtonGroup).toBeVisible()
+      expect(card.refs.updateButtonGroup).not.toBeVisible()
+      expect(card.refs.packageActionButtonGroup).not.toBeVisible()
+
+    it "can be installed if currently not installed", ->
+      setPackageStatusSpies {installed: false, disabled: false}
+      spyOn(packageManager, 'install')
+
+      card = new PackageCard {name: 'test-package'}, new SettingsView(), packageManager
+      expect(card.refs.installButton.style.display).not.toBe('none')
+      expect(card.refs.uninstallButton.style.display).toBe('none')
+      card.refs.installButton.click()
+      expect(packageManager.install).toHaveBeenCalled()
+
+    it "can be installed if currently not installed and package latest release engine match atom version", ->
+      spyOn(packageManager, 'install')
+      spyOn(packageManager, 'loadCompatiblePackageVersion').andCallFake (packageName, callback) ->
+        pack =
+          name: packageName
+          version: '0.1.0'
+          engines:
+            atom: '>0.50.0'
+
+        callback(null, pack)
+
+      setPackageStatusSpies {installed: false, disabled: false}
+
+      card = new PackageCard {
+        name: 'test-package'
+        version: '0.1.0'
+        engines:
+          atom: '>0.50.0'
+      }, new SettingsView(), packageManager
+
+      # In that case there's no need to make a request to get all the versions
+      expect(packageManager.loadCompatiblePackageVersion).not.toHaveBeenCalled()
+
+      expect(card.refs.installButton.style.display).not.toBe('none')
+      expect(card.refs.uninstallButton.style.display).toBe('none')
+      card.refs.installButton.click()
+      expect(packageManager.install).toHaveBeenCalled()
+      expect(packageManager.install.mostRecentCall.args[0]).toEqual({
+        name: 'test-package'
+        version: '0.1.0'
+        engines:
+          atom: '>0.50.0'
+      })
+
+    it "can be installed with a previous version whose engine match the current atom version", ->
+      spyOn(packageManager, 'install')
+      spyOn(packageManager, 'loadCompatiblePackageVersion').andCallFake (packageName, callback) ->
+        pack =
+          name: packageName
+          version: '0.0.1'
+          engines:
+            atom: '>0.50.0'
+
+        callback(null, pack)
+
+      setPackageStatusSpies {installed: false, disabled: false}
+
+      card = new PackageCard {
+        name: 'test-package'
+        version: '0.1.0'
+        engines:
+          atom: '>99.0.0'
+      }, new SettingsView(), packageManager
+
+      expect(card.refs.installButton.style.display).not.toBe('none')
+      expect(card.refs.uninstallButton.style.display).toBe('none')
+      expect(card.refs.versionValue.textContent).toBe('0.0.1')
+      expect(card.refs.versionValue).toHaveClass('text-warning')
+      expect(card.refs.packageMessage).toHaveClass('text-warning')
+      card.refs.installButton.click()
+      expect(packageManager.install).toHaveBeenCalled()
+      expect(packageManager.install.mostRecentCall.args[0]).toEqual({
+        name: 'test-package'
+        version: '0.0.1'
+        engines:
+          atom: '>0.50.0'
+      })
+
+    it "can't be installed if there is no version compatible with the current atom version", ->
+      spyOn(packageManager, 'loadCompatiblePackageVersion').andCallFake (packageName, callback) ->
+        pack =
+          name: packageName
+
+        callback(null, pack)
+
+      setPackageStatusSpies {installed: false, disabled: false}
+
+      pack =
+        name: 'test-package'
+        engines:
+          atom: '>=99.0.0'
+      card = new PackageCard(pack , new SettingsView(), packageManager)
+      jasmine.attachToDOM(card.element)
+
+      expect(card.refs.installButtonGroup).not.toBeVisible()
+      expect(card.refs.packageActionButtonGroup).not.toBeVisible()
+      expect(card.refs.versionValue).toHaveClass('text-error')
+      expect(card.refs.packageMessage).toHaveClass('text-error')
+
+  describe "when the package is installed", ->
+    beforeEach ->
+      atom.packages.loadPackage(path.join(__dirname, 'fixtures', 'package-with-config'))
+      waitsFor ->
+        atom.packages.isPackageLoaded('package-with-config') is true
+
+    it "can be disabled if installed", ->
+      setPackageStatusSpies {installed: true, disabled: false}
+      spyOn(atom.packages, 'disablePackage').andReturn(true)
+
+      card = new PackageCard {name: 'test-package'}, new SettingsView(), packageManager
+      expect(card.refs.enablementButton.querySelector('.disable-text').textContent).toBe('Disable')
+      card.refs.enablementButton.click()
+      expect(atom.packages.disablePackage).toHaveBeenCalled()
+
+    it "can be updated", ->
+      pack = atom.packages.getLoadedPackage('package-with-config')
+      pack.latestVersion = '1.1.0'
+      packageUpdated = false
+
+      packageManager.on 'package-updated', -> packageUpdated = true
+      packageManager.runCommand.andCallFake (args, callback) ->
+        callback(0, '', '')
+        onWillThrowError: ->
+
+      originalLoadPackage = atom.packages.loadPackage
+      spyOn(atom.packages, 'loadPackage').andCallFake ->
+        originalLoadPackage.call(atom.packages, path.join(__dirname, 'fixtures', 'package-with-config'))
+
+      card = new PackageCard(pack, new SettingsView(), packageManager)
+      jasmine.attachToDOM(card.element)
+      expect(card.refs.updateButton).toBeVisible()
+
+      card.update()
+
+      waitsFor ->
+        packageUpdated
+
+      runs ->
+        expect(card.refs.updateButton).not.toBeVisible()
+
+    it 'keeps the update button visible if the update failed', ->
+      pack = atom.packages.getLoadedPackage('package-with-config')
+      pack.latestVersion = '1.1.0'
+      updateFailed = false
+
+      packageManager.on 'package-update-failed', -> updateFailed = true
+      packageManager.runCommand.andCallFake (args, callback) ->
+        callback(1, '', '')
+        onWillThrowError: ->
+
+      originalLoadPackage = atom.packages.loadPackage
+      spyOn(atom.packages, 'loadPackage').andCallFake ->
+        originalLoadPackage.call(atom.packages, path.join(__dirname, 'fixtures', 'package-with-config'))
+
+      card = new PackageCard(pack, new SettingsView(), packageManager)
+      jasmine.attachToDOM(card.element)
+      expect(card.refs.updateButton).toBeVisible()
+
+      card.update()
+
+      waitsFor ->
+        updateFailed
+
+      runs ->
+        expect(card.refs.updateButton).toBeVisible()
+
+    it 'does not error when attempting to update without any update available', ->
+      # While this cannot be done through the package card UI,
+      # updates can still be triggered through the Updates panel's Update All button
+      # https://github.com/atom/settings-view/issues/879
+
+      pack = atom.packages.getLoadedPackage('package-with-config')
+
+      originalLoadPackage = atom.packages.loadPackage
+      spyOn(atom.packages, 'loadPackage').andCallFake ->
+        originalLoadPackage.call(atom.packages, path.join(__dirname, 'fixtures', 'package-with-config'))
+
+      card = new PackageCard(pack, new SettingsView(), packageManager)
+      jasmine.attachToDOM(card.element)
+      expect(card.refs.updateButton).not.toBeVisible()
+
+      waitsForPromise -> card.update()
+
+      runs ->
+        expect(card.refs.updateButton).not.toBeVisible()
+
+    it "will stay disabled after an update", ->
+      pack = atom.packages.getLoadedPackage('package-with-config')
+      pack.latestVersion = '1.1.0'
+      packageUpdated = false
+
+      packageManager.on 'package-updated', -> packageUpdated = true
+      packageManager.runCommand.andCallFake (args, callback) ->
+        callback(0, '', '')
+        onWillThrowError: ->
+
+      originalLoadPackage = atom.packages.loadPackage
+      spyOn(atom.packages, 'loadPackage').andCallFake ->
+        originalLoadPackage.call(atom.packages, path.join(__dirname, 'fixtures', 'package-with-config'))
+
+      pack.disable()
+      card = new PackageCard(pack, new SettingsView(), packageManager)
+      expect(atom.packages.isPackageDisabled('package-with-config')).toBe true
+      card.update()
+
+      waitsFor ->
+        packageUpdated
+
+      runs ->
+        expect(atom.packages.isPackageDisabled('package-with-config')).toBe true
+
+    it "is uninstalled when the uninstallButton is clicked", ->
+      setPackageStatusSpies {installed: true, disabled: false}
+
+      [uninstallCallback] = []
+      packageManager.runCommand.andCallFake (args, callback) ->
+        if args[0] is 'uninstall'
+          uninstallCallback = callback
+        onWillThrowError: ->
+
+      spyOn(packageManager, 'install').andCallThrough()
+      spyOn(packageManager, 'uninstall').andCallThrough()
+
+      pack = atom.packages.getLoadedPackage('package-with-config')
+      card = new PackageCard(pack, new SettingsView(), packageManager)
+      jasmine.attachToDOM(card.element)
+
+      expect(card.refs.uninstallButton).toBeVisible()
+      expect(card.refs.enablementButton).toBeVisible()
+      card.refs.uninstallButton.click()
+
+      expect(card.refs.uninstallButton.disabled).toBe true
+      expect(card.refs.enablementButton.disabled).toBe true
+      expect(card.refs.uninstallButton).toHaveClass('is-uninstalling')
+
+      expect(packageManager.uninstall).toHaveBeenCalled()
+      expect(packageManager.uninstall.mostRecentCall.args[0].name).toEqual('package-with-config')
+
+      jasmine.unspy(PackageCard::, 'isInstalled')
+      spyOn(PackageCard.prototype, 'isInstalled').andReturn false
+      uninstallCallback(0, '', '')
+
+      waits 1
+      runs ->
+        expect(card.refs.uninstallButton.disabled).toBe false
+        expect(card.refs.uninstallButton).not.toHaveClass('is-uninstalling')
+        expect(card.refs.installButtonGroup).toBeVisible()
+        expect(card.refs.updateButtonGroup).not.toBeVisible()
+        expect(card.refs.packageActionButtonGroup).not.toBeVisible()
+
+    it "shows the settings, uninstall, and enable buttons when disabled", ->
+      atom.config.set('package-with-config.setting', 'something')
+      pack = atom.packages.getLoadedPackage('package-with-config')
+      spyOn(atom.packages, 'isPackageDisabled').andReturn(true)
+      card = new PackageCard(pack, new SettingsView(), packageManager)
+      jasmine.attachToDOM(card.element)
+
+      expect(card.refs.updateButtonGroup).not.toBeVisible()
+      expect(card.refs.installButtonGroup).not.toBeVisible()
+
+      expect(card.refs.settingsButton).toBeVisible()
+      expect(card.refs.uninstallButton).toBeVisible()
+      expect(card.refs.enablementButton).toBeVisible()
+      expect(card.refs.enablementButton.textContent).toBe 'Enable'
+
+    it "shows the settings, uninstall, and disable buttons", ->
+      atom.config.set('package-with-config.setting', 'something')
+      pack = atom.packages.getLoadedPackage('package-with-config')
+      card = new PackageCard(pack, new SettingsView(), packageManager)
+
+      jasmine.attachToDOM(card.element)
+
+      expect(card.refs.updateButtonGroup).not.toBeVisible()
+      expect(card.refs.installButtonGroup).not.toBeVisible()
+
+      expect(card.refs.settingsButton).toBeVisible()
+      expect(card.refs.uninstallButton).toBeVisible()
+      expect(card.refs.enablementButton).toBeVisible()
+      expect(card.refs.enablementButton.textContent).toBe 'Disable'
+
+    it "does not show the settings button when there are no settings", ->
+      pack = atom.packages.getLoadedPackage('package-with-config')
+      spyOn(PackageCard::, 'hasSettings').andReturn(false)
+      card = new PackageCard(pack, new SettingsView(), packageManager)
+
+      jasmine.attachToDOM(card.element)
+
+      expect(card.refs.settingsButton).not.toBeVisible()
+      expect(card.refs.uninstallButton).toBeVisible()
+      expect(card.refs.enablementButton).toBeVisible()
+      expect(card.refs.enablementButton.textContent).toBe 'Disable'
diff --git a/packages/settings-view/spec/package-detail-view-spec.coffee b/packages/settings-view/spec/package-detail-view-spec.coffee
new file mode 100644
index 000000000..9e3ceef2c
--- /dev/null
+++ b/packages/settings-view/spec/package-detail-view-spec.coffee
@@ -0,0 +1,155 @@
+fs = require 'fs'
+path = require 'path'
+{shell} = require 'electron'
+
+PackageDetailView = require '../lib/package-detail-view'
+PackageManager = require '../lib/package-manager'
+SettingsView = require '../lib/settings-view'
+AtomIoClient = require '../lib/atom-io-client'
+SnippetsProvider =
+  getSnippets: -> {}
+
+describe "PackageDetailView", ->
+  packageManager = null
+  view = null
+
+  createClientSpy = ->
+    jasmine.createSpyObj('client', ['package', 'avatar'])
+
+  beforeEach ->
+    packageManager = new PackageManager
+    view = null
+
+  loadPackageFromRemote = (packageName, opts) ->
+    opts ?= {}
+    packageManager.client = createClientSpy()
+    packageManager.client.package.andCallFake (name, cb) ->
+      packageData = require(path.join(__dirname, 'fixtures', packageName, 'package.json'))
+      packageData.readme = fs.readFileSync(path.join(__dirname, 'fixtures', packageName, 'README.md'), 'utf8')
+      cb(null, packageData)
+    view = new PackageDetailView({name: packageName}, new SettingsView(), packageManager, SnippetsProvider)
+    view.beforeShow(opts)
+
+  loadCustomPackageFromRemote = (packageName, opts) ->
+    opts ?= {}
+    packageManager.client = createClientSpy()
+    packageManager.client.package.andCallFake (name, cb) ->
+      packageData = require(path.join(__dirname, 'fixtures', packageName, 'package.json'))
+      cb(null, packageData)
+    view = new PackageDetailView({name: packageName}, new SettingsView(), packageManager, SnippetsProvider)
+    view.beforeShow(opts)
+
+  it "renders a package when provided in `initialize`", ->
+    atom.packages.loadPackage(path.join(__dirname, 'fixtures', 'package-with-config'))
+    pack = atom.packages.getLoadedPackage('package-with-config')
+    view = new PackageDetailView(pack, new SettingsView(), packageManager, SnippetsProvider)
+
+    # Perhaps there are more things to assert here.
+    expect(view.refs.title.textContent).toBe('Package With Config')
+
+  it "does not call the atom.io api for package metadata when present", ->
+    packageManager.client = createClientSpy()
+    view = new PackageDetailView({name: 'package-with-config'}, new SettingsView(), packageManager, SnippetsProvider)
+
+    # PackageCard is a subview, and it calls AtomIoClient::package once to load
+    # metadata from the cache.
+    expect(packageManager.client.package.callCount).toBe(1)
+
+  it "shows a loading message and calls out to atom.io when package metadata is missing", ->
+    loadPackageFromRemote('package-with-readme')
+    expect(view.refs.loadingMessage).not.toBe(null)
+    expect(view.refs.loadingMessage.classList.contains('hidden')).not.toBe(true)
+    expect(packageManager.client.package).toHaveBeenCalled()
+
+  it "shows an error when package metadata cannot be loaded via the API", ->
+    packageManager.client = createClientSpy()
+    packageManager.client.package.andCallFake (name, cb) ->
+      error = new Error('API error')
+      cb(error, null)
+
+    view = new PackageDetailView({name: 'nonexistent-package'}, new SettingsView(), packageManager, SnippetsProvider)
+
+    expect(view.refs.errorMessage.classList.contains('hidden')).not.toBe(true)
+    expect(view.refs.loadingMessage.classList.contains('hidden')).toBe(true)
+    expect(view.element.querySelectorAll('.package-card').length).toBe(0)
+
+  it "shows an error when package metadata cannot be loaded from the cache and the network is unavailable", ->
+    localStorage.removeItem('settings-view:packages/some-package')
+
+    spyOn(AtomIoClient.prototype, 'online').andReturn(false)
+    spyOn(AtomIoClient.prototype, 'request').andCallFake (path, callback) ->
+      callback(new Error('getaddrinfo ENOENT atom.io:443'))
+    spyOn(AtomIoClient.prototype, 'fetchFromCache').andCallThrough()
+
+    view = new PackageDetailView({name: 'some-package'}, new SettingsView(), packageManager, SnippetsProvider)
+
+    expect(AtomIoClient.prototype.fetchFromCache).toHaveBeenCalled()
+
+    expect(view.refs.errorMessage.classList.contains('hidden')).not.toBe(true)
+    expect(view.refs.loadingMessage.classList.contains('hidden')).toBe(true)
+    expect(view.element.querySelectorAll('.package-card').length).toBe(0)
+
+  it "renders the README successfully after a call to the atom.io api", ->
+    loadPackageFromRemote('package-with-readme')
+    expect(view.packageCard).toBeDefined()
+    expect(view.packageCard.refs.packageName.textContent).toBe('package-with-readme')
+    expect(view.element.querySelectorAll('.package-readme').length).toBe(1)
+
+  it "renders the README successfully with sanitized html", ->
+    loadPackageFromRemote('package-with-readme')
+    expect(view.element.querySelectorAll('.package-readme script').length).toBe(0)
+    expect(view.element.querySelectorAll('.package-readme iframe').length).toBe(0)
+    expect(view.element.querySelectorAll('.package-readme input[type="checkbox"][disabled]').length).toBe(2)
+    expect(view.element.querySelector('img[alt="AbsoluteImage"]').getAttribute('src')).toBe('https://example.com/static/image.jpg')
+    expect(view.element.querySelector('img[alt="RelativeImage"]').getAttribute('src')).toBe('https://github.com/example/package-with-readme/blob/master/static/image.jpg')
+    expect(view.element.querySelector('img[alt="Base64Image"]').getAttribute('src')).toBe('data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==')
+
+  it "renders the README when the package path is undefined", ->
+    atom.packages.loadPackage(path.join(__dirname, 'fixtures', 'package-with-readme'))
+    pack = atom.packages.getLoadedPackage('package-with-readme')
+    delete pack.path
+    view = new PackageDetailView(pack, new SettingsView(), packageManager, SnippetsProvider)
+
+    expect(view.packageCard).toBeDefined()
+    expect(view.packageCard.refs.packageName.textContent).toBe('package-with-readme')
+    expect(view.element.querySelectorAll('.package-readme').length).toBe(1)
+
+  it "triggers a report issue button click and checks that the fallback repository issue tracker URL was opened", ->
+    loadCustomPackageFromRemote('package-without-bugs-property')
+    spyOn(shell, 'openExternal')
+    view.refs.issueButton.click()
+    expect(shell.openExternal).toHaveBeenCalledWith('https://github.com/example/package-without-bugs-property/issues/new')
+
+  it "triggers a report issue button click and checks that the bugs URL string was opened", ->
+    loadCustomPackageFromRemote('package-with-bugs-property-url-string')
+    spyOn(shell, 'openExternal')
+    view.refs.issueButton.click()
+    expect(shell.openExternal).toHaveBeenCalledWith('https://example.com/custom-issue-tracker/new')
+
+  it "triggers a report issue button click and checks that the bugs URL was opened", ->
+    loadCustomPackageFromRemote('package-with-bugs-property-url')
+    spyOn(shell, 'openExternal')
+    view.refs.issueButton.click()
+    expect(shell.openExternal).toHaveBeenCalledWith('https://example.com/custom-issue-tracker/new')
+
+  it "triggers a report issue button click and checks that the bugs email link was opened", ->
+    loadCustomPackageFromRemote('package-with-bugs-property-email')
+    spyOn(shell, 'openExternal')
+    view.refs.issueButton.click()
+    expect(shell.openExternal).toHaveBeenCalledWith('mailto:issues@example.com')
+
+  it "should show 'Install' as the first breadcrumb by default", ->
+    loadPackageFromRemote('package-with-readme')
+    expect(view.refs.breadcrumb.textContent).toBe('Install')
+
+  it "should open repository url", ->
+    loadPackageFromRemote('package-with-readme')
+    spyOn(shell, 'openExternal')
+    view.refs.packageRepo.click()
+    expect(shell.openExternal).toHaveBeenCalledWith('https://github.com/example/package-with-readme')
+
+  it "should open internal package repository url", ->
+    loadPackageFromRemote('package-internal')
+    spyOn(shell, 'openExternal')
+    view.refs.packageRepo.click()
+    expect(shell.openExternal).toHaveBeenCalledWith('https://github.com/pulsar-edit/pulsar/tree/master/packages/package-internal')
diff --git a/packages/settings-view/spec/package-manager-spec.coffee b/packages/settings-view/spec/package-manager-spec.coffee
new file mode 100644
index 000000000..fd2382dcc
--- /dev/null
+++ b/packages/settings-view/spec/package-manager-spec.coffee
@@ -0,0 +1,305 @@
+path = require 'path'
+process = require 'process'
+PackageManager = require '../lib/package-manager'
+
+describe "PackageManager", ->
+  [packageManager] = []
+
+  beforeEach ->
+    spyOn(atom.packages, 'getApmPath').andReturn('/an/invalid/apm/command/to/run')
+    atom.config.set('core.useProxySettingsWhenCallingApm', false)
+    packageManager = new PackageManager()
+
+  it "handle errors spawning apm", ->
+    noSuchCommandError = if process.platform is 'win32' then ' cannot find the path ' else 'ENOENT'
+    waitsForPromise shouldReject: true, -> packageManager.getInstalled()
+    waitsForPromise shouldReject: true, -> packageManager.getOutdated()
+    waitsForPromise shouldReject: true, -> packageManager.getFeatured()
+    waitsForPromise shouldReject: true, -> packageManager.getPackage('foo')
+
+    installCallback = jasmine.createSpy('installCallback')
+    uninstallCallback = jasmine.createSpy('uninstallCallback')
+    updateCallback = jasmine.createSpy('updateCallback')
+
+    runs ->
+      packageManager.install {name: 'foo', version: '1.0.0'}, installCallback
+
+    waitsFor ->
+      installCallback.callCount is 1
+
+    runs ->
+      installArg = installCallback.argsForCall[0][0]
+      expect(installArg.message).toBe "Installing \u201Cfoo@1.0.0\u201D failed."
+      expect(installArg.packageInstallError).toBe true
+      expect(installArg.stderr).toContain noSuchCommandError
+
+      packageManager.uninstall {name: 'foo'}, uninstallCallback
+
+    waitsFor ->
+      uninstallCallback.callCount is 1
+
+    runs ->
+      uninstallArg = uninstallCallback.argsForCall[0][0]
+      expect(uninstallArg.message).toBe "Uninstalling \u201Cfoo\u201D failed."
+      expect(uninstallArg.stderr).toContain noSuchCommandError
+
+      packageManager.update {name: 'foo'}, '1.0.0', updateCallback
+
+    waitsFor ->
+      updateCallback.callCount is 1
+
+    runs ->
+      updateArg = updateCallback.argsForCall[0][0]
+      expect(updateArg.message).toBe "Updating to \u201Cfoo@1.0.0\u201D failed."
+      expect(updateArg.packageInstallError).toBe true
+      expect(updateArg.stderr).toContain noSuchCommandError
+
+  describe "::isPackageInstalled()", ->
+    it "returns false a package is not installed", ->
+      expect(packageManager.isPackageInstalled('some-package')).toBe false
+
+    it "returns true when a package is loaded", ->
+      spyOn(atom.packages, 'isPackageLoaded').andReturn true
+      expect(packageManager.isPackageInstalled('some-package')).toBe true
+
+    it "returns true when a package is disabled", ->
+      spyOn(atom.packages, 'getAvailablePackageNames').andReturn ['some-package']
+      expect(packageManager.isPackageInstalled('some-package')).toBe true
+
+  describe "::install()", ->
+    [runArgs, runCallback] = []
+
+    beforeEach ->
+      spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+        runArgs = args
+        runCallback = callback
+        onWillThrowError: ->
+
+    it "installs the latest version when a package version is not specified", ->
+      packageManager.install {name: 'something'}, ->
+      expect(packageManager.runCommand).toHaveBeenCalled()
+      expect(runArgs).toEqual ['install', 'something', '--json']
+
+    it "installs the package@version when a version is specified", ->
+      packageManager.install {name: 'something', version: '0.2.3'}, ->
+      expect(packageManager.runCommand).toHaveBeenCalled()
+      expect(runArgs).toEqual ['install', 'something@0.2.3', '--json']
+
+    describe "git url installation", ->
+      it 'installs https:// urls', ->
+        url = "https://github.com/user/repo.git"
+        packageManager.install {name: url}
+        expect(packageManager.runCommand).toHaveBeenCalled()
+        expect(runArgs).toEqual ['install', 'https://github.com/user/repo.git', '--json']
+
+      it 'installs git@ urls', ->
+        url = "git@github.com:user/repo.git"
+        packageManager.install {name: url}
+        expect(packageManager.runCommand).toHaveBeenCalled()
+        expect(runArgs).toEqual ['install', 'git@github.com:user/repo.git', '--json']
+
+      it 'installs user/repo url shortcuts', ->
+        url = "user/repo"
+        packageManager.install {name: url}
+        expect(packageManager.runCommand).toHaveBeenCalled()
+        expect(runArgs).toEqual ['install', 'user/repo', '--json']
+
+      it 'installs and activates git pacakges with names different from the repo name', ->
+        spyOn(atom.packages, 'activatePackage')
+        packageManager.install(name: 'git-repo-name')
+        json =
+          metadata:
+            name: 'real-package-name'
+        runCallback(0, JSON.stringify([json]), '')
+        expect(atom.packages.activatePackage).toHaveBeenCalledWith json.metadata.name
+
+      it 'emits an installed event with a copy of the pack including the full package metadata', ->
+        spyOn(packageManager, 'emitPackageEvent')
+        originalPackObject = name: 'git-repo-name', otherData: {will: 'beCopied'}
+        packageManager.install(originalPackObject)
+        json =
+          metadata:
+            name: 'real-package-name'
+            moreInfo: 'yep'
+        runCallback(0, JSON.stringify([json]), '')
+
+        installEmittedCount = 0
+        for call in packageManager.emitPackageEvent.calls
+          if call.args[0] is "installed"
+            expect(call.args[1]).not.toEqual originalPackObject
+            expect(call.args[1].moreInfo).toEqual "yep"
+            expect(call.args[1].otherData).toBe originalPackObject.otherData
+            installEmittedCount++
+        expect(installEmittedCount).toBe 1
+
+  describe "::uninstall()", ->
+    [runCallback] = []
+
+    beforeEach ->
+      spyOn(packageManager, 'unload')
+      spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+        runCallback = callback
+        onWillThrowError: ->
+
+    it "removes the package from the core.disabledPackages list", ->
+      atom.config.set('core.disabledPackages', ['something'])
+
+      packageManager.uninstall {name: 'something'}, ->
+
+      expect(atom.config.get('core.disabledPackages')).toContain('something')
+      runCallback(0, '', '')
+      expect(atom.config.get('core.disabledPackages')).not.toContain('something')
+
+  describe "::packageHasSettings", ->
+    it "returns true when the pacakge has config", ->
+      atom.packages.loadPackage(path.join(__dirname, 'fixtures', 'package-with-config'))
+      expect(packageManager.packageHasSettings('package-with-config')).toBe true
+
+    it "returns false when the pacakge does not have config and doesn't define language grammars", ->
+      expect(packageManager.packageHasSettings('random-package')).toBe false
+
+    it "returns true when the pacakge does not have config, but does define language grammars", ->
+      packageName = 'language-test'
+
+      waitsForPromise ->
+        atom.packages.activatePackage(path.join(__dirname, 'fixtures', packageName))
+
+      runs ->
+        expect(packageManager.packageHasSettings(packageName)).toBe true
+
+  describe "::loadOutdated", ->
+    it "caches results", ->
+      spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+        callback(0, '[{"name": "boop"}]', '')
+        onWillThrowError: ->
+
+      packageManager.loadOutdated false, ->
+      expect(packageManager.apmCache.loadOutdated.value).toMatch([{"name": "boop"}])
+
+      packageManager.loadOutdated false, ->
+      expect(packageManager.runCommand.calls.length).toBe(1)
+
+    it "expires results after a timeout", ->
+      spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+        callback(0, '[{"name": "boop"}]', '')
+        onWillThrowError: ->
+
+      packageManager.loadOutdated false, ->
+      now = Date.now()
+      spyOn(Date, 'now') unless Date.now.andReturn
+      Date.now.andReturn((-> now + packageManager.CACHE_EXPIRY + 1)())
+      packageManager.loadOutdated false, ->
+
+      expect(packageManager.runCommand.calls.length).toBe(2)
+
+    it "expires results after a package updated/installed", ->
+      packageManager.apmCache.loadOutdated =
+        value: ['hi']
+        expiry: Date.now() + 999999999
+
+      spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+        callback(0, '[{"name": "boop"}]', '')
+        onWillThrowError: ->
+
+      # Just prevent this stuff from calling through, it doesn't matter for this test
+      spyOn(atom.packages, 'deactivatePackage').andReturn(true)
+      spyOn(atom.packages, 'activatePackage').andReturn(true)
+      spyOn(atom.packages, 'unloadPackage').andReturn(true)
+      spyOn(atom.packages, 'loadPackage').andReturn(true)
+
+      packageManager.loadOutdated false, ->
+      expect(packageManager.runCommand.calls.length).toBe(0)
+
+      packageManager.update {}, {}, -> # +1 runCommand call to update the package
+      packageManager.loadOutdated false, -> # +1 runCommand call to load outdated because the cache should be wiped
+      expect(packageManager.runCommand.calls.length).toBe(2)
+
+      packageManager.install {}, -> # +1 runCommand call to install the package
+      packageManager.loadOutdated false, -> # +1 runCommand call to load outdated because the cache should be wiped
+      expect(packageManager.runCommand.calls.length).toBe(4)
+
+      packageManager.loadOutdated false, -> # +0 runCommand call, should be cached
+      expect(packageManager.runCommand.calls.length).toBe(4)
+
+    it "expires results if it is called with clearCache set to true", ->
+      packageManager.apmCache.loadOutdated =
+        value: ['hi']
+        expiry: Date.now() + 999999999
+
+      spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+        callback(0, '[{"name": "boop"}]', '')
+        onWillThrowError: ->
+
+      packageManager.loadOutdated true, ->
+      expect(packageManager.runCommand.calls.length).toBe(1)
+      expect(packageManager.apmCache.loadOutdated.value).toEqual [{"name": "boop"}]
+
+    describe "when there is a version pinned package", ->
+      beforeEach ->
+        atom.config.set('core.versionPinnedPackages', ['beep'])
+
+      it "caches results", ->
+        spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+          callback(0, '[{"name": "boop"}, {"name": "beep"}]', '')
+          onWillThrowError: ->
+
+        packageManager.loadOutdated false, ->
+        expect(packageManager.apmCache.loadOutdated.value).toMatch([{"name": "boop"}])
+
+        packageManager.loadOutdated false, ->
+        expect(packageManager.runCommand.calls.length).toBe(1)
+
+      it "expires results after a timeout", ->
+        spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+          callback(0, '[{"name": "boop"}, {"name": "beep"}]', '')
+          onWillThrowError: ->
+
+        packageManager.loadOutdated false, ->
+        now = Date.now()
+        spyOn(Date, 'now') unless Date.now.andReturn
+        Date.now.andReturn((-> now + packageManager.CACHE_EXPIRY + 1)())
+        packageManager.loadOutdated false, ->
+
+        expect(packageManager.runCommand.calls.length).toBe(2)
+
+      it "expires results after a package updated/installed", ->
+        packageManager.apmCache.loadOutdated =
+          value: ['hi']
+          expiry: Date.now() + 999999999
+
+        spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+          callback(0, '[{"name": "boop"}, {"name": "beep"}]', '')
+          onWillThrowError: ->
+
+        # Just prevent this stuff from calling through, it doesn't matter for this test
+        spyOn(atom.packages, 'deactivatePackage').andReturn(true)
+        spyOn(atom.packages, 'activatePackage').andReturn(true)
+        spyOn(atom.packages, 'unloadPackage').andReturn(true)
+        spyOn(atom.packages, 'loadPackage').andReturn(true)
+
+        packageManager.loadOutdated false, ->
+        expect(packageManager.runCommand.calls.length).toBe(0)
+
+        packageManager.update {}, {}, -> # +1 runCommand call to update the package
+        packageManager.loadOutdated false, -> # +1 runCommand call to load outdated because the cache should be wiped
+        expect(packageManager.runCommand.calls.length).toBe(2)
+
+        packageManager.install {}, -> # +1 runCommand call to install the package
+        packageManager.loadOutdated false, -> # +1 runCommand call to load outdated because the cache should be wiped
+        expect(packageManager.runCommand.calls.length).toBe(4)
+
+        packageManager.loadOutdated false, -> # +0 runCommand call, should be cached
+        expect(packageManager.runCommand.calls.length).toBe(4)
+
+      it "expires results if it is called with clearCache set to true", ->
+        packageManager.apmCache.loadOutdated =
+          value: ['hi']
+          expiry: Date.now() + 999999999
+
+        spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+          callback(0, '[{"name": "boop"}, {"name": "beep"}]', '')
+          onWillThrowError: ->
+
+        packageManager.loadOutdated true, ->
+        expect(packageManager.runCommand.calls.length).toBe(1)
+        expect(packageManager.apmCache.loadOutdated.value).toEqual [{"name": "boop"}]
diff --git a/packages/settings-view/spec/package-updates-status-view-spec.coffee b/packages/settings-view/spec/package-updates-status-view-spec.coffee
new file mode 100644
index 000000000..510f1efef
--- /dev/null
+++ b/packages/settings-view/spec/package-updates-status-view-spec.coffee
@@ -0,0 +1,152 @@
+PackageManager = require '../lib/package-manager'
+PackageUpdatesStatusView = require '../lib/package-updates-status-view'
+
+describe "PackageUpdatesStatusView", ->
+  [statusBar, statusView, packageManager] = []
+
+  outdatedPackage1 =
+    name: 'out-dated-1'
+  outdatedPackage2 =
+    name: 'out-dated-2'
+  installedPackage =
+    name: 'user-package'
+
+  beforeEach ->
+    spyOn(PackageManager.prototype, 'loadCompatiblePackageVersion').andCallFake ->
+    spyOn(PackageManager.prototype, 'getInstalled').andCallFake -> Promise.resolve([installedPackage])
+    spyOn(PackageManager.prototype, 'getOutdated').andCallFake -> Promise.resolve([outdatedPackage1, outdatedPackage2])
+    spyOn(PackageUpdatesStatusView.prototype, 'initialize').andCallThrough()
+    jasmine.attachToDOM(atom.views.getView(atom.workspace))
+
+    waitsForPromise ->
+      atom.packages.activatePackage('status-bar')
+
+    waitsForPromise ->
+      atom.packages.activatePackage('settings-view')
+
+    runs ->
+      atom.packages.emitter.emit('did-activate-all')
+      expect(document.querySelector('status-bar .package-updates-status-view')).toExist()
+
+      packageManager = PackageUpdatesStatusView.prototype.initialize.mostRecentCall.args[1]
+
+  describe "when packages are outdated", ->
+    it "adds a tile to the status bar", ->
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '2 updates'
+
+  describe "when the tile is clicked", ->
+    it "opens the Available Updates panel", ->
+      spyOn(atom.commands, 'dispatch').andCallFake ->
+
+      document.querySelector('status-bar .package-updates-status-view').click()
+      expect(atom.commands.dispatch).toHaveBeenCalledWith(atom.views.getView(atom.workspace), 'settings-view:check-for-package-updates')
+
+    it "does not destroy the tile", ->
+      document.querySelector('status-bar .package-updates-status-view').click()
+      expect(document.querySelector('status-bar .package-updates-status-view')).toExist()
+
+  describe "when a package is updating", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('updating', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1/2 updating'
+
+  describe "when a package finishes updating", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('updating', outdatedPackage1)
+      packageManager.emitPackageEvent('updated', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1 update'
+
+  describe "when a package is updated without a prior updating event", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('updated', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1 update'
+
+  describe "when multiple packages are updating and one finishes", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('updating', outdatedPackage1)
+      packageManager.emitPackageEvent('updating', outdatedPackage2)
+      packageManager.emitPackageEvent('updated', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1/1 updating'
+
+  describe "when a package fails to update", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('updating', outdatedPackage1)
+      packageManager.emitPackageEvent('update-failed', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '2 updates (1 failed)'
+
+  describe "when a package that previously failed to update starts updating again", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('updating', outdatedPackage1)
+      packageManager.emitPackageEvent('update-failed', outdatedPackage1)
+      packageManager.emitPackageEvent('updating', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1/2 updating'
+      packageManager.emitPackageEvent('update-failed', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '2 updates (1 failed)'
+
+  describe "when a package update that previously failed succeeds on a subsequent try", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('update-failed', outdatedPackage1)
+      packageManager.emitPackageEvent('updated', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1 update'
+
+  describe "when multiple events are happening at the same time", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('update-available', installedPackage)
+      packageManager.emitPackageEvent('updating', outdatedPackage1)
+      packageManager.emitPackageEvent('update-failed', outdatedPackage2)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1/3 updating (1 failed)'
+
+  describe "when there are no more updates", ->
+    it "destroys the tile", ->
+      packageManager.emitPackageEvent('updated', outdatedPackage1)
+      packageManager.emitPackageEvent('updated', outdatedPackage2)
+      expect(document.querySelector('status-bar .package-updates-status-view')).not.toExist()
+
+  describe "when a new update becomes available and the tile is destroyed", ->
+    it "recreates the tile", ->
+      packageManager.emitPackageEvent('updated', outdatedPackage1)
+      packageManager.emitPackageEvent('updated', outdatedPackage2)
+      packageManager.emitPackageEvent('update-available', installedPackage)
+      expect(document.querySelector('status-bar .package-updates-status-view')).toExist()
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1 update'
+
+  describe "when an update becomes available for a package", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('update-available', installedPackage)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '3 updates'
+
+  describe "when updates are checked for multiple times and no new updates are available", ->
+    it "does not keep updating the tile", ->
+      packageManager.emitPackageEvent('update-available', outdatedPackage1)
+      packageManager.emitPackageEvent('update-available', outdatedPackage1)
+      packageManager.emitPackageEvent('update-available', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '2 updates'
+
+      # There are more fields in an actual package object,
+      # so make sure only name is tested and not object equality
+      packageManager.emitPackageEvent('update-available', {name: 'out-dated-1', date: Date.now()})
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '2 updates'
+
+  describe "when the same update fails multiple times", ->
+    it "does not keep updating the tile", ->
+      packageManager.emitPackageEvent('update-failed', outdatedPackage1)
+      packageManager.emitPackageEvent('update-failed', outdatedPackage1)
+      packageManager.emitPackageEvent('update-failed', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '2 updates (1 failed)'
+
+  describe "when a package that can be updated is uninstalled", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('uninstalled', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1 update'
+
+  describe "when a package that is updating is uninstalled", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('updating', outdatedPackage1)
+      packageManager.emitPackageEvent('uninstalled', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1 update'
+
+  describe "when a package that failed to update is uninstalled", ->
+    it "updates the tile", ->
+      packageManager.emitPackageEvent('update-failed', outdatedPackage1)
+      packageManager.emitPackageEvent('uninstalled', outdatedPackage1)
+      expect(document.querySelector('status-bar .package-updates-status-view').textContent).toBe '1 update'
diff --git a/packages/settings-view/spec/rich-description-spec.coffee b/packages/settings-view/spec/rich-description-spec.coffee
new file mode 100644
index 000000000..219cc9a28
--- /dev/null
+++ b/packages/settings-view/spec/rich-description-spec.coffee
@@ -0,0 +1,159 @@
+{getSettingDescription} = require '../lib/rich-description'
+
+describe "Rich descriptions", ->
+  beforeEach ->
+    config =
+      type: 'object'
+      properties:
+        plainText:
+          description: 'Plain text description'
+          type: 'string'
+          default: ''
+        italics:
+          description: 'Description *with* italics'
+          type: 'string'
+          default: ''
+        bold:
+          description: 'Description **with** bold'
+          type: 'string'
+          default: ''
+        link:
+          description: 'Description [with](http://www.example.com) link'
+          type: 'string'
+          default: ''
+        inlineCode:
+          description: 'Description `with` inline code'
+          type: 'string'
+          default: ''
+        lineBreak:
+          description: 'Description with<br/> line break'
+          type: 'string'
+          default: ''
+        strikethrough:
+          description: 'Description ~~with~~ strikethrough'
+          type: 'string'
+          default: ''
+        image:
+          description: 'Description without ![alt text](https://github.com/adam-p/markdown-here/raw/master/src/common/images/icon48.png "Logo Title Text 1") image'
+          type: 'string'
+          default: ''
+        fencedBlockCode:
+          description: '''Description without fenced block code
+          ```
+          Test
+          ```
+          '''
+          type: 'string'
+          default: ''
+        indentedBlockCode:
+          description: '''
+          Description without indented block code
+
+              Test
+          '''
+          type: 'string'
+          default: ''
+        blockquote:
+          description: '''
+          Description without blockquote
+
+          > Test
+          '''
+          type: 'string'
+          default: ''
+        html:
+          description: '''
+          Description without html
+
+          <html>Test</html>
+          '''
+          type: 'string'
+          default: ''
+        heading:
+          description: '''
+          Description without heading
+
+          ## Test
+          '''
+          type: 'string'
+          default: ''
+        orderedList:
+          description: '''
+          Description without ordered list
+
+          1. Test
+          2. Test
+          3. Test
+          '''
+          type: 'string'
+          default: ''
+        unorderedList:
+          description: '''
+          Description without unordered list
+
+          * Test
+          * Test
+          * Test
+          '''
+          type: 'string'
+          default: ''
+        table:
+          description: '''
+          Description without table
+
+          <table><tr><td>Test</td></tr></table>
+          '''
+          type: 'string'
+          default: ''
+
+    atom.config.setSchema("foo", config)
+
+  describe 'supported Markdown', ->
+    it 'handles plain text', ->
+      expect(getSettingDescription('foo.plainText')).toEqual 'Plain text description'
+
+    it 'handles italics', ->
+      expect(getSettingDescription('foo.italics')).toEqual 'Description <em>with</em> italics'
+
+    it 'handles bold', ->
+      expect(getSettingDescription('foo.bold')).toEqual 'Description <strong>with</strong> bold'
+
+    it 'handles links', ->
+      expect(getSettingDescription('foo.link')).toEqual 'Description <a href="http://www.example.com">with</a> link'
+
+    it 'handles inline code', ->
+      expect(getSettingDescription('foo.inlineCode')).toEqual 'Description <code>with</code> inline code'
+
+    it 'handles line breaks', ->
+      expect(getSettingDescription('foo.lineBreak')).toEqual 'Description with<br/> line break'
+
+    it 'handles strikethrough', ->
+      expect(getSettingDescription('foo.strikethrough')).toEqual 'Description <del>with</del> strikethrough'
+
+  describe 'unsupported Markdown', ->
+    it 'strips images', ->
+      expect(getSettingDescription('foo.image')).toEqual 'Description without  image'
+
+    it 'strips fenced code blocks', ->
+      expect(getSettingDescription('foo.fencedBlockCode')).toEqual 'Description without fenced block code'
+
+    it 'strips indented code blocks', ->
+      expect(getSettingDescription('foo.indentedBlockCode')).toEqual 'Description without indented block code'
+
+    it 'strips blockquotes', ->
+      expect(getSettingDescription('foo.blockquote')).toEqual 'Description without blockquote'
+
+    it 'strips html elements', ->
+      expect(getSettingDescription('foo.html')).toEqual 'Description without html'
+
+    it 'strips headings', ->
+      expect(getSettingDescription('foo.heading')).toEqual 'Description without heading'
+
+    it 'strips ordered lists', ->
+      expect(getSettingDescription('foo.orderedList')).toEqual 'Description without ordered list'
+
+    it 'strips unordered lists', ->
+      expect(getSettingDescription('foo.unorderedList')).toEqual 'Description without unordered list'
+
+    it 'strips tables', ->
+      expect(getSettingDescription('foo.table')).toEqual 'Description without table'
diff --git a/packages/settings-view/spec/settings-panel-spec.coffee b/packages/settings-view/spec/settings-panel-spec.coffee
new file mode 100644
index 000000000..491b87d05
--- /dev/null
+++ b/packages/settings-view/spec/settings-panel-spec.coffee
@@ -0,0 +1,381 @@
+SettingsPanel = require '../lib/settings-panel'
+_ = require 'underscore-plus'
+
+describe "SettingsPanel", ->
+  settingsPanel = null
+
+  describe "sorted settings", ->
+    beforeEach ->
+      config =
+        type: 'object'
+        properties:
+          bar:
+            title: 'Bar'
+            description: 'The bar setting'
+            type: 'boolean'
+            default: true
+          haz:
+            title: 'Haz'
+            description: 'The haz setting'
+            type: 'string'
+            default: 'haz'
+          zing:
+            title: 'Zing'
+            description: 'The zing setting'
+            type: 'string'
+            default: 'zing'
+            order: 1
+          zang:
+            title: 'Zang'
+            description: 'The baz setting'
+            type: 'string'
+            default: 'zang'
+            order: 100
+          enum:
+            title: 'An enum'
+            type: 'string'
+            default: 'one'
+            enum: [
+              {value: 'one', description: 'One'}
+              'Two'
+            ]
+          radio:
+            title: 'An enum with radio buttons'
+            radio: true
+            type: 'string'
+            default: 'Two'
+            enum: [
+              {value: 'one', description: 'One'}
+              'Two'
+            ]
+      atom.config.setSchema("foo", config)
+      atom.config.setDefaults("foo", gong: 'gong')
+      expect(_.size(atom.config.get('foo'))).toBe 7
+      settingsPanel = new SettingsPanel({namespace: "foo", includeTitle: false})
+
+    it "sorts settings by order and then alphabetically by the key", ->
+      settings = atom.config.get('foo')
+      expect(_.size(settings)).toBe 7
+      sortedSettings = settingsPanel.sortSettings("foo", settings)
+      expect(sortedSettings[0]).toBe 'zing'
+      expect(sortedSettings[1]).toBe 'zang'
+      expect(sortedSettings[2]).toBe 'bar'
+      expect(sortedSettings[3]).toBe 'enum'
+      expect(sortedSettings[4]).toBe 'gong'
+      expect(sortedSettings[5]).toBe 'haz'
+      expect(sortedSettings[6]).toBe 'radio'
+
+    it "gracefully deals with a null settings object", ->
+      sortedSettings = settingsPanel.sortSettings("foo", null)
+      expect(sortedSettings).not.toBeNull
+      expect(_.size(sortedSettings)).toBe 0
+
+    it "presents enum options with their descriptions", ->
+      select = settingsPanel.element.querySelector('#foo\\.enum')
+      pairs = ([opt.value, opt.innerText] for opt in select.children)
+      expect(pairs).toEqual([['one', 'One'], ['Two', 'Two']])
+
+    it "presents radio options with their descriptions", ->
+      radio = settingsPanel.element.querySelector('#foo\\.radio')
+      options = for label in radio.querySelectorAll 'label'
+        button = label.querySelector('input[type=radio][name="foo.radio"]')
+        [button.id, button.value, label.innerText]
+      expect(options).toEqual([['foo.radio[one]', 'one', 'One'], ['foo.radio[Two]', 'Two', 'Two']])
+
+  describe 'default settings', ->
+    beforeEach ->
+      config =
+        type: 'object'
+        properties:
+          haz:
+            name: 'haz'
+            title: 'Haz'
+            description: 'The haz setting'
+            type: 'string'
+            default: 'haz'
+          qux:
+            name: 'qux'
+            title: 'Qux'
+            description: 'The qux setting'
+            type: 'string'
+            default: 'a'
+            enum: [
+              {value: 'a', description: 'Alice'},
+              {value: 'b', description: 'Bob'}
+            ]
+          testZero:
+            name: 'testZero'
+            title: 'Test Zero'
+            description: 'Setting for testing zero as a default'
+            type: 'integer'
+            default: 0
+          radio:
+            title: 'An enum with radio buttons'
+            radio: true
+            type: 'string'
+            default: 'Two'
+            enum: [
+              {value: 'one', description: 'One'}
+              'Two'
+              'Three'
+            ]
+      atom.config.setSchema("foo", config)
+      atom.config.setDefaults("foo", gong: 'gong')
+      expect(_.size(atom.config.get('foo'))).toBe 5
+      settingsPanel = new SettingsPanel({namespace: "foo", includeTitle: false})
+
+    it 'ensures default stays default', ->
+      expect(settingsPanel.getDefault('foo.haz')).toBe 'haz'
+      expect(settingsPanel.isDefault('foo.haz')).toBe true
+      settingsPanel.set('foo.haz', 'haz')
+      expect(settingsPanel.isDefault('foo.haz')).toBe true
+
+    it 'can be overwritten', ->
+      expect(settingsPanel.getDefault('foo.haz')).toBe 'haz'
+      expect(settingsPanel.isDefault('foo.haz')).toBe true
+      settingsPanel.set('foo.haz', 'newhaz')
+      expect(settingsPanel.isDefault('foo.haz')).toBe false
+      expect(atom.config.get('foo.haz')).toBe 'newhaz'
+
+    it 'has a tooltip showing the default value', ->
+      hazEditor = settingsPanel.element.querySelector('[id="foo.haz"]')
+      tooltips = atom.tooltips.findTooltips(hazEditor)
+      expect(tooltips).toHaveLength 1
+      title = tooltips[0].options.title
+      expect(title).toBe "Default: haz"
+
+    it 'has a tooltip showing the description of the default value', ->
+      quxEditor = settingsPanel.element.querySelector('[id="foo.qux"]')
+      tooltips = atom.tooltips.findTooltips(quxEditor)
+      expect(tooltips).toHaveLength 1
+      title = tooltips[0].options.title
+      expect(title).toBe "Default: Alice"
+
+    # Regression test for #783
+    it 'allows 0 to be a default', ->
+      zeroEditor = settingsPanel.element.querySelector('[id="foo.testZero"]')
+      expect(zeroEditor.getModel().getText()).toBe('')
+      expect(zeroEditor.getModel().getPlaceholderText()).toBe('Default: 0')
+
+      expect(settingsPanel.getDefault('foo.testZero')).toBe 0
+      expect(settingsPanel.isDefault('foo.testZero')).toBe true
+
+      settingsPanel.set('foo.testZero', 15)
+      expect(settingsPanel.isDefault('foo.testZero')).toBe false
+
+      settingsPanel.set('foo.testZero', 0)
+      expect(settingsPanel.isDefault('foo.testZero')).toBe true
+
+    it "selects the default choice for radio options", ->
+      expect(settingsPanel.getDefault 'foo.radio').toBe 'Two'
+      settingsPanel.set 'foo.radio', 'Two'
+      expect(settingsPanel.element.querySelector '#foo\\.radio\\[Two\\]').toBeChecked()
+
+    describe 'scoped settings', ->
+      beforeEach ->
+        schema =
+          scopes:
+            '.source.python':
+              default: 4
+
+        atom.config.setScopedDefaultsFromSchema('editor.tabLength', schema)
+        expect(atom.config.get('editor.tabLength')).toBe(2)
+
+      it 'displays the scoped default', ->
+        settingsPanel = new SettingsPanel({namespace: "editor", includeTitle: false, scopeName: '.source.python'})
+        tabLengthEditor = settingsPanel.element.querySelector('[id="editor.tabLength"]')
+        expect(tabLengthEditor.getModel().getText()).toBe('')
+        expect(tabLengthEditor.getModel().getPlaceholderText()).toBe('Default: 4')
+
+      it 'allows the scoped setting to be changed to its normal default if the unscoped value is different', ->
+        atom.config.set('editor.tabLength', 8)
+
+        settingsPanel = new SettingsPanel({namespace: "editor", includeTitle: false, scopeName: '.source.js'})
+        tabLengthEditor = settingsPanel.element.querySelector('[id="editor.tabLength"]')
+        expect(tabLengthEditor.getModel().getText()).toBe('')
+        expect(tabLengthEditor.getModel().getPlaceholderText()).toBe('Default: 8')
+
+        # This is the unscoped default, but it differs from the current unscoped value
+        settingsPanel.set('editor.tabLength', 2)
+        expect(tabLengthEditor.getModel().getText()).toBe('2')
+        expect(atom.config.get('editor.tabLength', {scope: ['source.js']})).toBe(2)
+
+      it 'allows the scoped setting to be changed to the unscoped default if it is different', ->
+        settingsPanel = new SettingsPanel({namespace: "editor", includeTitle: false, scopeName: '.source.python'})
+        tabLengthEditor = settingsPanel.element.querySelector('[id="editor.tabLength"]')
+        expect(tabLengthEditor.getModel().getText()).toBe('')
+        expect(tabLengthEditor.getModel().getPlaceholderText()).toBe('Default: 4')
+
+        # This is the unscoped default, but it differs from the scoped default
+        settingsPanel.set('editor.tabLength', 2)
+        expect(tabLengthEditor.getModel().getText()).toBe('2')
+        expect(atom.config.get('editor.tabLength', {scope: ['source.python']})).toBe(2)
+
+  describe 'grouped settings', ->
+    beforeEach ->
+      config =
+        type: 'object'
+        properties:
+          barGroup:
+            type: 'object'
+            title: 'Bar group'
+            description: 'description of bar group'
+            properties:
+              bar:
+                title: 'Bar'
+                description: 'The bar setting'
+                type: 'boolean'
+                default: false
+          bazGroup:
+            type: 'object'
+            collapsed: true
+            properties:
+              baz:
+                title: 'Baz'
+                description: 'The baz setting'
+                type: 'boolean'
+                default: false
+          zing:
+            type: 'string'
+            default: ''
+      atom.config.setSchema('foo', config)
+      expect(_.size(atom.config.get('foo'))).toBe 3
+      settingsPanel = new SettingsPanel({namespace: 'foo', includeTitle: false})
+
+    it 'ensures that only grouped settings have a group title', ->
+      expect(settingsPanel.element.querySelectorAll('.section-container > .section-body')).toHaveLength 1
+      controlGroups = settingsPanel.element.querySelectorAll('.section-body > .control-group')
+      expect(controlGroups).toHaveLength 3
+      expect(controlGroups[0].querySelectorAll('.sub-section .sub-section-heading')).toHaveLength 1
+      expect(controlGroups[0].querySelector('.sub-section .sub-section-heading').textContent).toBe 'Bar group'
+      expect(controlGroups[0].querySelectorAll('.sub-section .sub-section-body')).toHaveLength 1
+      subsectionBody = controlGroups[0].querySelector('.sub-section .sub-section-body')
+      expect(subsectionBody.querySelectorAll('.control-group')).toHaveLength 1
+      expect(controlGroups[1].querySelectorAll('.sub-section .sub-section-heading')).toHaveLength 1
+      expect(controlGroups[1].querySelector('.sub-section .sub-section-heading').textContent).toBe 'Baz Group'
+      expect(controlGroups[1].querySelectorAll('.sub-section .sub-section-body')).toHaveLength 1
+      subsectionBody = controlGroups[1].querySelector('.sub-section .sub-section-body')
+      expect(subsectionBody.querySelectorAll('.control-group')).toHaveLength 1
+      expect(controlGroups[2].querySelectorAll('.sub-section')).toHaveLength 0
+      expect(controlGroups[2].querySelectorAll('.sub-section-heading')).toHaveLength 0
+
+    it 'ensures grouped settings are collapsable', ->
+      expect(settingsPanel.element.querySelectorAll('.section-container > .section-body')).toHaveLength 1
+      controlGroups = settingsPanel.element.querySelectorAll('.section-body > .control-group')
+      expect(controlGroups).toHaveLength 3
+      # Bar group
+      expect(controlGroups[0].querySelectorAll('.sub-section .sub-section-heading')).toHaveLength 1
+      expect(controlGroups[0].querySelector('.sub-section .sub-section-heading').classList.contains('has-items')).toBe true
+      # Baz Group
+      expect(controlGroups[1].querySelectorAll('.sub-section .sub-section-heading')).toHaveLength 1
+      expect(controlGroups[1].querySelector('.sub-section .sub-section-heading').classList.contains('has-items')).toBe true
+      # Should be already collapsed
+      expect(controlGroups[1].querySelector('.sub-section .sub-section-heading').parentElement.classList.contains('collapsed')).toBe true
+
+    it 'ensures grouped settings can have a description', ->
+      expect(settingsPanel.element.querySelectorAll('.section-container > .section-body')).toHaveLength 1
+      controlGroups = settingsPanel.element.querySelectorAll('.section-body > .control-group')
+      expect(controlGroups).toHaveLength 3
+      expect(controlGroups[0].querySelectorAll('.sub-section > .setting-description')).toHaveLength 1
+      expect(controlGroups[0].querySelector('.sub-section > .setting-description').textContent).toBe 'description of bar group'
+
+  describe 'settings validation', ->
+    beforeEach ->
+      config =
+        type: 'object'
+        properties:
+          minMax:
+            name: 'minMax'
+            title: 'Min max'
+            description: 'The minMax setting'
+            type: 'integer'
+            default: 10
+            minimum: 1
+            maximum: 100
+          commaValueArray:
+            name: 'commaValueArray'
+            title: 'Comma value in array'
+            description: 'An array with a comma value'
+            type: 'array'
+            default: []
+
+      atom.config.setSchema('foo', config)
+      settingsPanel = new SettingsPanel({namespace: 'foo', includeTitle: false})
+
+    it 'prevents setting a value below the minimum', ->
+      minMaxEditor = settingsPanel.element.querySelector('[id="foo.minMax"]')
+      minMaxEditor.getModel().setText('0')
+      advanceClock(minMaxEditor.getModel().getBuffer().getStoppedChangingDelay())
+      expect(minMaxEditor.getModel().getText()).toBe '1'
+
+      minMaxEditor.getModel().setText('-5')
+      advanceClock(minMaxEditor.getModel().getBuffer().getStoppedChangingDelay())
+      expect(minMaxEditor.getModel().getText()).toBe '1'
+
+    it 'prevents setting a value above the maximum', ->
+      minMaxEditor = settingsPanel.element.querySelector('[id="foo.minMax"]')
+      minMaxEditor.getModel().setText('1000')
+      advanceClock(minMaxEditor.getModel().getBuffer().getStoppedChangingDelay())
+      expect(minMaxEditor.getModel().getText()).toBe '100'
+
+      minMaxEditor.getModel().setText('10000')
+      advanceClock(minMaxEditor.getModel().getBuffer().getStoppedChangingDelay())
+      expect(minMaxEditor.getModel().getText()).toBe '100'
+
+    it 'prevents setting a value that cannot be coerced to the correct type', ->
+      minMaxEditor = settingsPanel.element.querySelector('[id="foo.minMax"]')
+      minMaxEditor.getModel().setText('"abcde"')
+      advanceClock(minMaxEditor.getModel().getBuffer().getStoppedChangingDelay())
+      expect(minMaxEditor.getModel().getText()).toBe '' # aka default
+
+      minMaxEditor.getModel().setText('15')
+      advanceClock(minMaxEditor.getModel().getBuffer().getStoppedChangingDelay())
+      expect(minMaxEditor.getModel().getText()).toBe '15'
+
+      minMaxEditor.getModel().setText('"abcde"')
+      advanceClock(minMaxEditor.getModel().getBuffer().getStoppedChangingDelay())
+      expect(minMaxEditor.getModel().getText()).toBe '15'
+
+    it 'allows setting a valid scoped value', ->
+      settingsPanel = new SettingsPanel({namespace: 'foo', includeTitle: false, scopeName: 'source.js'})
+      minMaxEditor = settingsPanel.element.querySelector('atom-text-editor')
+      minMaxEditor.getModel().setText('15')
+      advanceClock(minMaxEditor.getModel().getBuffer().getStoppedChangingDelay())
+      expect(minMaxEditor.getModel().getText()).toBe '15'
+
+    describe 'commaValueArray', ->
+      it 'comma in value is escaped', ->
+        commaValueArrayEditor = settingsPanel.element.querySelector('[id="foo.commaValueArray"]')
+        commaValueArrayEditor.getModel().setText('1, \\,, 2')
+        advanceClock(commaValueArrayEditor.getModel().getBuffer().getStoppedChangingDelay())
+        expect(atom.config.get("foo.commaValueArray")).toEqual ['1', ',', '2']
+
+        commaValueArrayEditor.getModel().setText('1\\, 2')
+        advanceClock(commaValueArrayEditor.getModel().getBuffer().getStoppedChangingDelay())
+        expect(atom.config.get('foo.commaValueArray')).toEqual ['1, 2']
+
+        commaValueArrayEditor.getModel().setText('1\\,')
+        advanceClock(commaValueArrayEditor.getModel().getBuffer().getStoppedChangingDelay())
+        expect(atom.config.get('foo.commaValueArray')).toEqual ['1,']
+
+        commaValueArrayEditor.getModel().setText('\\, 2')
+        advanceClock(commaValueArrayEditor.getModel().getBuffer().getStoppedChangingDelay())
+        expect(atom.config.get('foo.commaValueArray')).toEqual [', 2']
+
+      it 'renders an escaped comma', ->
+        commaValueArrayEditor = settingsPanel.element.querySelector('[id="foo.commaValueArray"]')
+        atom.config.set('foo.commaValueArray', ['3', ',', '4'])
+        advanceClock(1000)
+        expect(commaValueArrayEditor.getModel().getText()).toBe '3, \\,, 4'
+
+        atom.config.set('foo.commaValueArray', ['3, 4'])
+        advanceClock(1000)
+        expect(commaValueArrayEditor.getModel().getText()).toBe '3\\, 4'
+
+        atom.config.set('foo.commaValueArray', ['3,'])
+        advanceClock(1000)
+        expect(commaValueArrayEditor.getModel().getText()).toBe '3\\,'
+
+        atom.config.set('foo.commaValueArray', [', 4'])
+        advanceClock(1000)
+        expect(commaValueArrayEditor.getModel().getText()).toBe '\\, 4'
diff --git a/packages/settings-view/spec/settings-view-spec.coffee b/packages/settings-view/spec/settings-view-spec.coffee
new file mode 100644
index 000000000..877fffe7c
--- /dev/null
+++ b/packages/settings-view/spec/settings-view-spec.coffee
@@ -0,0 +1,519 @@
+path = require 'path'
+main = require '../lib/main'
+PackageManager = require '../lib/package-manager'
+SettingsView = require '../lib/settings-view'
+SnippetsProvider =
+  getSnippets: -> {}
+
+describe "SettingsView", ->
+  settingsView = null
+  packageManager = new PackageManager()
+
+  beforeEach ->
+    settingsView = main.createSettingsView({packageManager: packageManager, snippetsProvider: SnippetsProvider})
+    spyOn(settingsView, "initializePanels").andCallThrough()
+    window.advanceClock(10000)
+    waitsFor ->
+      settingsView.initializePanels.callCount > 0
+
+  describe "serialization", ->
+    it "remembers which panel was visible", ->
+      settingsView.showPanel('Themes')
+      newSettingsView = main.createSettingsView(settingsView.serialize())
+      settingsView.destroy()
+      jasmine.attachToDOM(newSettingsView.element)
+      newSettingsView.initializePanels()
+      expect(newSettingsView.activePanel).toEqual {name: 'Themes', options: {}}
+
+    it "shows the previously active panel if it is added after deserialization", ->
+      settingsView.addCorePanel('Panel 1', 'panel-1', ->
+        div = document.createElement('div')
+        div.id = 'panel-1'
+        {
+          element: div,
+          show: -> div.style.display = '',
+          focus: -> div.focus(),
+          destroy: -> div.remove()
+        }
+      )
+      settingsView.showPanel('Panel 1')
+      newSettingsView = main.createSettingsView(settingsView.serialize())
+      newSettingsView.addPanel('Panel 1', ->
+        div = document.createElement('div')
+        div.id = 'panel-1'
+        {
+          element: div,
+          show: -> div.style.display = '',
+          focus: -> div.focus(),
+          destroy: -> div.remove()
+        }
+      )
+      newSettingsView.initializePanels()
+      jasmine.attachToDOM(newSettingsView.element)
+      expect(newSettingsView.activePanel).toEqual {name: 'Panel 1', options: {}}
+
+    it "shows the Settings panel if the last saved active panel name no longer exists", ->
+      settingsView.addCorePanel('Panel 1', 'panel1', ->
+        div = document.createElement('div')
+        div.id = 'panel-1'
+        {
+          element: div,
+          show: -> div.style.display = '',
+          focus: -> div.focus(),
+          destroy: -> div.remove()
+        }
+      )
+      settingsView.showPanel('Panel 1')
+      newSettingsView = main.createSettingsView(settingsView.serialize())
+      settingsView.destroy()
+      jasmine.attachToDOM(newSettingsView.element)
+      newSettingsView.initializePanels()
+      expect(newSettingsView.activePanel).toEqual {name: 'Core', options: {}}
+
+    it "serializes the active panel name even when the panels were never initialized", ->
+      settingsView.showPanel('Themes')
+      settingsView2 = main.createSettingsView(settingsView.serialize())
+      settingsView3 = main.createSettingsView(settingsView2.serialize())
+      jasmine.attachToDOM(settingsView3.element)
+      settingsView3.initializePanels()
+      expect(settingsView3.activePanel).toEqual {name: 'Themes', options: {}}
+
+  describe ".addCorePanel(name, iconName, view)", ->
+    it "adds a menu entry to the left and a panel that can be activated by clicking it", ->
+      settingsView.addCorePanel('Panel 1', 'panel1', ->
+        div = document.createElement('div')
+        div.id = 'panel-1'
+        {
+          element: div,
+          show: -> div.style.display = '',
+          focus: -> div.focus(),
+          destroy: -> div.remove()
+        }
+      )
+      settingsView.addCorePanel('Panel 2', 'panel2', ->
+        div = document.createElement('div')
+        div.id = 'panel-2'
+        {
+          element: div,
+          show: -> div.style.display = '',
+          focus: -> div.focus(),
+          destroy: -> div.remove()
+        }
+      )
+
+      expect(settingsView.refs.panelMenu.querySelector('li[name="Panel 1"]')).toExist()
+      expect(settingsView.refs.panelMenu.querySelector('li[name="Panel 2"]')).toExist()
+      expect(settingsView.refs.panelMenu.children[0]).toHaveClass 'active'
+
+      jasmine.attachToDOM(settingsView.element)
+      settingsView.refs.panelMenu.querySelector('li[name="Panel 1"] a').click()
+      expect(settingsView.refs.panelMenu.querySelectorAll('.active').length).toBe 1
+      expect(settingsView.refs.panelMenu.querySelector('li[name="Panel 1"]')).toHaveClass('active')
+      expect(settingsView.refs.panels.querySelector('#panel-1')).toBeVisible()
+      expect(settingsView.refs.panels.querySelector('#panel-2')).not.toExist()
+      settingsView.refs.panelMenu.querySelector('li[name="Panel 2"] a').click()
+      expect(settingsView.refs.panelMenu.querySelectorAll('.active').length).toBe 1
+      expect(settingsView.refs.panelMenu.querySelector('li[name="Panel 2"]')).toHaveClass('active')
+      expect(settingsView.refs.panels.querySelector('#panel-1')).toBeHidden()
+      expect(settingsView.refs.panels.querySelector('#panel-2')).toBeVisible()
+
+  describe "when the package is activated", ->
+    openWithCommand = (command) ->
+      waitsFor (done) ->
+        openSubscription = atom.workspace.onDidOpen ->
+          openSubscription.dispose()
+          done()
+        atom.commands.dispatch(atom.views.getView(atom.workspace), command)
+
+    beforeEach ->
+      jasmine.attachToDOM(atom.views.getView(atom.workspace))
+      waitsForPromise ->
+        atom.packages.activatePackage('settings-view')
+
+    describe "when the settings view is opened with a settings-view:* command", ->
+      beforeEach ->
+        settingsView = null
+
+      describe "settings-view:open", ->
+        it "opens the settings view", ->
+          openWithCommand('settings-view:open')
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel)
+              .toEqual name: 'Core', options: {}
+
+        it "always open existing item in workspace", ->
+          center = atom.workspace.getCenter()
+          [pane1, pane2] = []
+
+          waitsForPromise -> atom.workspace.open(null, split: 'right')
+          runs ->
+            expect(center.getPanes()).toHaveLength(2)
+            [pane1, pane2] = center.getPanes()
+            expect(atom.workspace.getActivePane()).toBe(pane2)
+
+          openWithCommand('settings-view:open')
+
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel).toEqual name: 'Core', options: {}
+            expect(atom.workspace.getActivePane()).toBe(pane2)
+
+          runs ->
+            pane1.activate()
+
+          openWithCommand('settings-view:open')
+
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel).toEqual name: 'Core', options: {}
+            expect(atom.workspace.getActivePane()).toBe(pane2)
+
+      describe "settings-view:core", ->
+        it "opens the core settings view", ->
+          openWithCommand('settings-view:editor')
+          runs ->
+            openWithCommand('settings-view:core')
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel)
+              .toEqual name: 'Core', options: uri: 'atom://config/core'
+
+      describe "settings-view:editor", ->
+        it "opens the editor settings view", ->
+          openWithCommand('settings-view:editor')
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel)
+              .toEqual name: 'Editor', options: uri: 'atom://config/editor'
+
+      describe "settings-view:show-keybindings", ->
+        it "opens the settings view to the keybindings page", ->
+          openWithCommand('settings-view:show-keybindings')
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel)
+              .toEqual name: 'Keybindings', options: uri: 'atom://config/keybindings'
+
+      describe "settings-view:change-themes", ->
+        it "opens the settings view to the themes page", ->
+          openWithCommand('settings-view:change-themes')
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel)
+              .toEqual name: 'Themes', options: uri: 'atom://config/themes'
+
+      describe "settings-view:uninstall-themes", ->
+        it "opens the settings view to the themes page", ->
+          openWithCommand('settings-view:uninstall-themes')
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel)
+              .toEqual name: 'Themes', options: uri: 'atom://config/themes'
+
+      describe "settings-view:uninstall-packages", ->
+        it "opens the settings view to the install page", ->
+          openWithCommand('settings-view:uninstall-packages')
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel)
+              .toEqual name: 'Packages', options: uri: 'atom://config/packages'
+
+      describe "settings-view:install-packages-and-themes", ->
+        it "opens the settings view to the install page", ->
+          openWithCommand('settings-view:install-packages-and-themes')
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel)
+              .toEqual name: 'Install', options: uri: 'atom://config/install'
+
+      describe "settings-view:check-for-package-updates", ->
+        it "opens the settings view to the install page", ->
+          openWithCommand('settings-view:check-for-package-updates')
+          runs ->
+            expect(atom.workspace.getActivePaneItem().activePanel)
+              .toEqual name: 'Updates', options: uri: 'atom://config/updates'
+
+    describe "when atom.workspace.open() is used with a config URI", ->
+      focusIsWithinActivePanel = ->
+        activePanel = settingsView.panelsByName[settingsView.activePanel.name]
+        activePanel.element is document.activeElement or activePanel.element.contains(document.activeElement)
+
+      expectActivePanelToBeKeyboardScrollable = ->
+        activePanel = settingsView.panelsByName[settingsView.activePanel.name]
+        spyOn(activePanel, 'pageDown')
+        atom.commands.dispatch(activePanel.element, 'core:page-down')
+        expect(activePanel.pageDown).toHaveBeenCalled()
+        spyOn(activePanel, 'pageUp')
+        atom.commands.dispatch(activePanel.element, 'core:page-up')
+        expect(activePanel.pageUp).toHaveBeenCalled()
+
+      beforeEach ->
+        settingsView = null
+
+      it "opens the settings to the correct panel with atom://config/<panel-name> and that panel is keyboard-scrollable", ->
+        waitsForPromise ->
+          atom.workspace.open('atom://config').then (s) -> settingsView = s
+
+        waitsFor (done) -> process.nextTick(done)
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'Core', options: {}
+          expect(focusIsWithinActivePanel()).toBe true
+          expectActivePanelToBeKeyboardScrollable()
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/editor').then (s) -> settingsView = s
+
+        waits 1
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'Editor', options: uri: 'atom://config/editor'
+          expect(focusIsWithinActivePanel()).toBe true
+          expectActivePanelToBeKeyboardScrollable()
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/keybindings').then (s) -> settingsView = s
+
+        waits 1
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'Keybindings', options: uri: 'atom://config/keybindings'
+          expect(focusIsWithinActivePanel()).toBe true
+          expectActivePanelToBeKeyboardScrollable()
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/packages').then (s) -> settingsView = s
+
+        waits 1
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'Packages', options: uri: 'atom://config/packages'
+          expect(focusIsWithinActivePanel()).toBe true
+          expectActivePanelToBeKeyboardScrollable()
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/themes').then (s) -> settingsView = s
+
+        waits 1
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'Themes', options: uri: 'atom://config/themes'
+          expect(focusIsWithinActivePanel()).toBe true
+          expectActivePanelToBeKeyboardScrollable()
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/updates').then (s) -> settingsView = s
+
+        waits 1
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'Updates', options: uri: 'atom://config/updates'
+          expect(focusIsWithinActivePanel()).toBe true
+          expectActivePanelToBeKeyboardScrollable()
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/install').then (s) -> settingsView = s
+
+        hasSystemPanel = false
+        waits 1
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'Install', options: uri: 'atom://config/install'
+          expect(focusIsWithinActivePanel()).toBe true
+          expectActivePanelToBeKeyboardScrollable()
+          hasSystemPanel = settingsView.panelsByName['System']?
+
+        if hasSystemPanel
+          waitsForPromise ->
+            atom.workspace.open('atom://config/system').then (s) -> settingsView = s
+
+          waits 1
+          runs ->
+            expect(settingsView.activePanel)
+              .toEqual name: 'System', options: uri: 'atom://config/system'
+            expect(focusIsWithinActivePanel()).toBe true
+            expectActivePanelToBeKeyboardScrollable()
+
+      it "opens the package settings view with atom://config/packages/<package-name>", ->
+        waitsForPromise ->
+          atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'package-with-readme'))
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/packages/package-with-readme').then (s) -> settingsView = s
+
+        waitsFor (done) -> process.nextTick(done)
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'package-with-readme', options: {
+              uri: 'atom://config/packages/package-with-readme',
+              pack:
+                name: 'package-with-readme'
+                metadata:
+                  name: 'package-with-readme'
+              back: 'Packages'
+            }
+
+      it "doesn't use cached package detail when package re-activated and opnes the package view with atom://config/packages/<package-name>", ->
+        [detailInitial, detailAfterReactivate] = []
+
+        waitsForPromise ->
+          atom.packages.activate()
+          new Promise (resolve) -> atom.packages.onDidActivateInitialPackages(resolve)
+
+        waitsForPromise ->
+          atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'package-with-readme'))
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/packages/package-with-readme').then (s) -> settingsView = s
+
+        waitsFor (done) -> process.nextTick(done)
+
+        runs ->
+          detailInitial = settingsView.getOrCreatePanel('package-with-readme')
+          expect(settingsView.getOrCreatePanel('package-with-readme')).toBe detailInitial
+
+        waitsForPromise ->
+          atom.packages.deactivatePackage('package-with-readme')
+
+        waitsForPromise ->
+          atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'package-with-readme'))
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/packages/package-with-readme')
+
+        runs ->
+          detailAfterReactivate = settingsView.getOrCreatePanel('package-with-readme')
+          expect(settingsView.getOrCreatePanel('package-with-readme')).toBe detailAfterReactivate
+          expect(detailInitial).toBeTruthy()
+          expect(detailAfterReactivate).toBeTruthy()
+          expect(detailInitial).not.toBe(detailAfterReactivate)
+
+      it "passes the URI to a pane's beforeShow() method on settings view initialization", ->
+        InstallPanel = require '../lib/install-panel'
+        spyOn(InstallPanel::, 'beforeShow')
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/install/package:something').then (s) -> settingsView = s
+
+        waitsFor ->
+          settingsView.activePanel?
+        , 'The activePanel should be set', 5000
+
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'Install', options: uri: 'atom://config/install/package:something'
+          expect(InstallPanel::beforeShow).toHaveBeenCalledWith {uri: 'atom://config/install/package:something'}
+
+      it "passes the URI to a pane's beforeShow() method after initialization", ->
+        InstallPanel = require '../lib/install-panel'
+        spyOn(InstallPanel::, 'beforeShow')
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config').then (s) -> settingsView = s
+
+        waitsFor (done) -> process.nextTick(done)
+
+        runs ->
+          expect(settingsView.activePanel).toEqual {name: 'Core', options: {}}
+
+        waitsForPromise ->
+          atom.workspace.open('atom://config/install/package:something').then (s) -> settingsView = s
+
+        waits 1
+        runs ->
+          expect(settingsView.activePanel)
+            .toEqual name: 'Install', options: uri: 'atom://config/install/package:something'
+          expect(InstallPanel::beforeShow).toHaveBeenCalledWith {uri: 'atom://config/install/package:something'}
+
+    describe "when the package is then deactivated", ->
+      beforeEach ->
+        settingsView = null
+
+      it "calls the dispose method on all panels", ->
+        openWithCommand('settings-view:open')
+
+        waitsFor (done) -> process.nextTick(done)
+
+        runs ->
+          settingsView = atom.workspace.getActivePaneItem()
+          panels = [
+            settingsView.getOrCreatePanel('Core')
+            settingsView.getOrCreatePanel('Editor')
+            settingsView.getOrCreatePanel('Keybindings')
+            settingsView.getOrCreatePanel('Packages')
+            settingsView.getOrCreatePanel('Themes')
+            settingsView.getOrCreatePanel('Updates')
+            settingsView.getOrCreatePanel('Install')
+          ]
+          systemPanel = settingsView.getOrCreatePanel('System')
+          if systemPanel?
+            panels.push systemPanel
+          for panel in panels
+            if panel.dispose
+              spyOn(panel, 'dispose')
+            else
+              spyOn(panel, 'destroy')
+
+          waitsForPromise ->
+            Promise.resolve(atom.packages.deactivatePackage('settings-view')) # Ensure works on promise and non-promise versions
+
+          runs ->
+            for panel in panels
+              if panel.dispose
+                expect(panel.dispose).toHaveBeenCalled()
+              else
+                expect(panel.destroy).toHaveBeenCalled()
+
+            return
+
+  describe "when an installed package is clicked from the Install panel", ->
+    it "displays the package details", ->
+      waitsFor ->
+        atom.packages.activatePackage('settings-view')
+
+      runs ->
+        settingsView.packageManager.getClient()
+        spyOn(settingsView.packageManager.client, 'featuredPackages').andCallFake (callback) ->
+          callback(null, [{name: 'settings-view'}])
+        settingsView.showPanel('Install')
+
+      waitsFor ->
+        settingsView.element.querySelectorAll('.package-card:not(.hidden)').length > 0
+
+      runs ->
+        settingsView.element.querySelectorAll('.package-card:not(.hidden)')[0].click()
+
+        packageDetail = settingsView.element.querySelector('.package-detail .active')
+        expect(packageDetail.textContent).toBe 'Settings View'
+
+  describe "when the active theme has settings", ->
+    panel = null
+
+    beforeEach ->
+      atom.packages.packageDirPaths.push(path.join(__dirname, 'fixtures'))
+      atom.packages.loadPackage('ui-theme-with-config')
+      atom.packages.loadPackage('syntax-theme-with-config')
+      atom.config.set('core.themes', ['ui-theme-with-config', 'syntax-theme-with-config'])
+
+      reloadedHandler = jasmine.createSpy('reloadedHandler')
+      atom.themes.onDidChangeActiveThemes(reloadedHandler)
+      atom.themes.activatePackages()
+
+      waitsFor "themes to be reloaded", ->
+        reloadedHandler.callCount is 1
+
+      runs ->
+        settingsView.showPanel('Themes')
+        panel = settingsView.element.querySelector('.themes-panel')
+
+    afterEach ->
+      atom.themes.unwatchUserStylesheet()
+
+    describe "when the UI theme's settings button is clicked", ->
+      it "navigates to that theme's detail view", ->
+        jasmine.attachToDOM(settingsView.element)
+        expect(panel.querySelector('.active-theme-settings')).toBeVisible()
+
+        panel.querySelector('.active-theme-settings').click()
+        packageDetail = settingsView.element.querySelector('.package-detail li.active')
+        expect(packageDetail.textContent).toBe 'Ui Theme With Config'
+
+    describe "when the syntax theme's settings button is clicked", ->
+      it "navigates to that theme's detail view", ->
+        jasmine.attachToDOM(settingsView.element)
+        expect(panel.querySelector('.active-syntax-settings')).toBeVisible()
+
+        panel.querySelector('.active-syntax-settings').click()
+        packageDetail = settingsView.element.querySelector('.package-detail li.active')
+        expect(packageDetail.textContent).toBe 'Syntax Theme With Config'
diff --git a/packages/settings-view/spec/themes-panel-spec.coffee b/packages/settings-view/spec/themes-panel-spec.coffee
new file mode 100644
index 000000000..7f3e8bc39
--- /dev/null
+++ b/packages/settings-view/spec/themes-panel-spec.coffee
@@ -0,0 +1,208 @@
+path = require 'path'
+fs = require 'fs'
+
+CSON = require 'season'
+
+PackageManager = require '../lib/package-manager'
+ThemesPanel = require '../lib/themes-panel'
+
+describe "ThemesPanel", ->
+  [panel, packageManager, reloadedHandler] = []
+  settingsView = null
+
+  beforeEach ->
+    atom.packages.loadPackage('atom-light-ui')
+    atom.packages.loadPackage('atom-dark-ui')
+    atom.packages.loadPackage('atom-light-syntax')
+    atom.packages.loadPackage('atom-dark-syntax')
+    atom.packages.packageDirPaths.push(path.join(__dirname, 'fixtures'))
+    atom.config.set('core.themes', ['atom-dark-ui', 'atom-dark-syntax'])
+    reloadedHandler = jasmine.createSpy('reloadedHandler')
+    atom.themes.onDidChangeActiveThemes(reloadedHandler)
+    atom.themes.activatePackages()
+
+    waitsFor "themes to be reloaded", ->
+      reloadedHandler.callCount is 1
+
+    runs ->
+      packageManager = new PackageManager
+      themeMetadata = CSON.readFileSync(path.join(__dirname, 'fixtures', 'a-theme', 'package.json'))
+      spyOn(packageManager, 'getFeatured').andCallFake (callback) ->
+        Promise.resolve([themeMetadata])
+      panel = new ThemesPanel(settingsView, packageManager)
+
+      # Make updates synchronous
+      spyOn(panel, 'scheduleUpdateThemeConfig').andCallFake -> @updateThemeConfig()
+
+  afterEach ->
+    atom.packages.unloadPackage('a-theme') if atom.packages.isPackageLoaded('a-theme')
+    waitsForPromise ->
+      Promise.resolve(atom.themes.deactivateThemes()) # Ensure works on promise and non-promise versions
+
+  it "selects the active syntax and UI themes", ->
+    expect(panel.refs.uiMenu.value).toBe 'atom-dark-ui'
+    expect(panel.refs.syntaxMenu.value).toBe 'atom-dark-syntax'
+
+  describe "when a UI theme is selected", ->
+    it "updates the 'core.themes' config key with the selected UI theme", ->
+      for child in panel.refs.uiMenu.children
+        child.selected = child.value is 'atom-light-ui'
+        child.dispatchEvent(new Event('change', {bubbles: true}))
+      waitsFor ->
+        reloadedHandler.callCount is 2
+      runs ->
+        expect(atom.config.get('core.themes')).toEqual ['atom-light-ui', 'atom-dark-syntax']
+
+  describe "when a syntax theme is selected", ->
+    it "updates the 'core.themes' config key with the selected syntax theme", ->
+      for child in panel.refs.syntaxMenu.children
+        child.selected = child.value is 'atom-light-syntax'
+        child.dispatchEvent(new Event('change', {bubbles: true}))
+      waitsFor ->
+        reloadedHandler.callCount is 2
+      runs ->
+        expect(atom.config.get('core.themes')).toEqual ['atom-dark-ui', 'atom-light-syntax']
+
+  describe "when the 'core.config' key changes", ->
+    it "refreshes the theme menus", ->
+      reloadedHandler.reset()
+      atom.config.set('core.themes', ['atom-light-ui', 'atom-light-syntax'])
+
+      waitsFor ->
+        reloadedHandler.callCount is 1
+
+      runs ->
+        expect(panel.refs.uiMenu.value).toBe 'atom-light-ui'
+        expect(panel.refs.syntaxMenu.value).toBe 'atom-light-syntax'
+
+  xdescribe "when the themes panel is navigated to", ->
+    xit "focuses the search filter", ->
+      settingsView.showPanel('Themes')
+      expect(panel.refs.filterEditor.element).toHaveFocus()
+
+  describe "theme lists", ->
+    [installed] = []
+    beforeEach ->
+      installed = JSON.parse fs.readFileSync(path.join(__dirname, 'fixtures', 'installed.json'))
+      spyOn(packageManager, 'loadCompatiblePackageVersion').andCallFake ->
+      spyOn(packageManager, 'getInstalled').andReturn Promise.resolve(installed)
+      panel = new ThemesPanel(settingsView, packageManager)
+
+      waitsFor ->
+        packageManager.getInstalled.callCount is 1 and panel.refs.communityCount.textContent.indexOf('…') < 0
+
+    it 'shows the themes', ->
+      expect(panel.refs.communityCount.textContent.trim()).toBe '1'
+      expect(panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+      expect(panel.refs.coreCount.textContent.trim()).toBe '1'
+      expect(panel.refs.corePackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+      expect(panel.refs.devCount.textContent.trim()).toBe '1'
+      expect(panel.refs.devPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+    it 'filters themes by name', ->
+      panel.refs.filterEditor.setText('user-')
+      window.advanceClock(panel.refs.filterEditor.getBuffer().stoppedChangingDelay)
+      expect(panel.refs.communityCount.textContent.trim()).toBe '1/1'
+      expect(panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+      expect(panel.refs.coreCount.textContent.trim()).toBe '0/1'
+      expect(panel.refs.corePackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 0
+
+      expect(panel.refs.devCount.textContent.trim()).toBe '0/1'
+      expect(panel.refs.devPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 0
+
+    it 'adds newly installed themes to the list', ->
+      [installCallback] = []
+      spyOn(packageManager, 'runCommand').andCallFake (args, callback) ->
+        installCallback = callback
+        onWillThrowError: ->
+      spyOn(atom.packages, 'loadPackage').andCallFake (name) ->
+        installed.user.push {name, theme: 'ui'}
+
+      expect(panel.refs.communityCount.textContent.trim()).toBe '1'
+      expect(panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 1
+
+      packageManager.install({name: 'another-user-theme', theme: 'ui'})
+      installCallback(0, '', '')
+
+      advanceClock ThemesPanel.loadPackagesDelay()
+      waits 1
+      runs ->
+        expect(panel.refs.communityCount.textContent.trim()).toBe '2'
+        expect(panel.refs.communityPackages.querySelectorAll('.package-card:not(.hidden)').length).toBe 2
+
+    it 'collapses/expands a sub-section if its header is clicked', ->
+      expect(panel.element.querySelectorAll('.sub-section-heading.has-items').length).toBe 3
+      panel.element.querySelector('.sub-section.installed-packages .sub-section-heading.has-items').click()
+      expect(panel.element.querySelector('.sub-section.installed-packages')).toHaveClass 'collapsed'
+
+      expect(panel.element.querySelector('.sub-section.core-packages')).not.toHaveClass 'collapsed'
+      expect(panel.element.querySelector('.sub-section.dev-packages')).not.toHaveClass 'collapsed'
+
+      panel.element.querySelector('.sub-section.installed-packages .sub-section-heading.has-items').click()
+      expect(panel.element.querySelector('.sub-section.installed-packages')).not.toHaveClass 'collapsed'
+
+    it 'can collapse and expand any of the sub-sections', ->
+      expect(panel.element.querySelectorAll('.sub-section-heading.has-items').length).toBe 3
+
+      for heading in panel.element.querySelectorAll('.sub-section-heading.has-items')
+        heading.click()
+      expect(panel.element.querySelector('.sub-section.installed-packages')).toHaveClass 'collapsed'
+      expect(panel.element.querySelector('.sub-section.core-packages')).toHaveClass 'collapsed'
+      expect(panel.element.querySelector('.sub-section.dev-packages')).toHaveClass 'collapsed'
+
+      for heading in panel.element.querySelectorAll('.sub-section-heading.has-items')
+        heading.click()
+      expect(panel.element.querySelector('.sub-section.installed-packages')).not.toHaveClass 'collapsed'
+      expect(panel.element.querySelector('.sub-section.core-packages')).not.toHaveClass 'collapsed'
+      expect(panel.element.querySelector('.sub-section.dev-packages')).not.toHaveClass 'collapsed'
+
+    it 'can collapse sub-sections when filtering', ->
+      panel.refs.filterEditor.setText('user-')
+      window.advanceClock(panel.refs.filterEditor.getBuffer().stoppedChangingDelay)
+
+      hasItems = panel.element.querySelectorAll('.sub-section-heading.has-items')
+      expect(hasItems.length).toBe 1
+      expect(hasItems[0].textContent).toMatch /^Community Themes/
+
+  describe 'when there are no themes', ->
+    beforeEach ->
+      installed =
+        dev: []
+        user: []
+        core: []
+
+      spyOn(packageManager, 'loadCompatiblePackageVersion').andCallFake ->
+      spyOn(packageManager, 'getInstalled').andReturn Promise.resolve(installed)
+      panel = new ThemesPanel(settingsView, packageManager)
+
+      waitsFor ->
+        packageManager.getInstalled.callCount is 1 and panel.refs.communityCount.textContent.indexOf('…') < 0
+
+    afterEach ->
+      waitsForPromise ->
+        Promise.resolve(atom.themes.deactivateThemes()) # Ensure works on promise and non-promise versions
+
+    it 'has a count of zero in all headings', ->
+      for heading in panel.element.querySelector('.section-heading-count')
+        expect(heading.textContent).toMatch /^0+$/
+      expect(panel.element.querySelectorAll('.sub-section .icon-paintcan').length).toBe 4
+      expect(panel.element.querySelectorAll('.sub-section .icon-paintcan.has-items').length).toBe 0
+
+    it 'can collapse and expand any of the sub-sections', ->
+      for heading in panel.element.querySelectorAll('.sub-section-heading')
+        heading.click()
+      expect(panel.element.querySelector('.sub-section.installed-packages')).not.toHaveClass 'collapsed'
+      expect(panel.element.querySelector('.sub-section.core-packages')).not.toHaveClass 'collapsed'
+      expect(panel.element.querySelector('.sub-section.dev-packages')).not.toHaveClass 'collapsed'
+
+    it 'does not allow collapsing on any section when filtering', ->
+      panel.refs.filterEditor.setText('user-')
+      window.advanceClock(panel.refs.filterEditor.getBuffer().stoppedChangingDelay)
+
+      for heading in panel.element.querySelector('.section-heading-count')
+        expect(heading.textContent).toMatch /^(0\/0)+$/
+      expect(panel.element.querySelectorAll('.sub-section .icon-paintcan').length).toBe 4
+      expect(panel.element.querySelectorAll('.sub-section .icon-paintcan.has-items').length).toBe 0
diff --git a/packages/settings-view/spec/updates-panel-spec.coffee b/packages/settings-view/spec/updates-panel-spec.coffee
new file mode 100644
index 000000000..973302586
--- /dev/null
+++ b/packages/settings-view/spec/updates-panel-spec.coffee
@@ -0,0 +1,225 @@
+UpdatesPanel = require '../lib/updates-panel'
+PackageManager = require '../lib/package-manager'
+SettingsView = require '../lib/settings-view'
+
+describe 'UpdatesPanel', ->
+  panel = null
+  settingsView = null
+  packageManager = null
+  [resolveOutdated, rejectOutdated] = []
+
+  beforeEach ->
+    settingsView = new SettingsView
+    packageManager = new PackageManager
+    # This spy is only needed for the Check for Updates specs,
+    # but we have to instantiate it here because we need to pass the spy to the UpdatesPanel
+    spyOn(packageManager, 'getOutdated').andReturn(new Promise((resolve, reject) -> [resolveOutdated, rejectOutdated] = [resolve, reject]))
+    panel = new UpdatesPanel(settingsView, packageManager)
+    jasmine.attachToDOM(panel.element)
+
+  it "shows updates when updates are available", ->
+    pack =
+      name: 'test-package'
+      description: 'some description'
+      latestVersion: '99.0.0'
+      version: '1.0.0'
+
+    # skip packman stubbing
+    panel.beforeShow(updates: [pack])
+    expect(panel.refs.updatesContainer.children.length).toBe(1)
+
+  it "shows a message when updates are not available", ->
+    panel.beforeShow(updates: [])
+    expect(panel.refs.updatesContainer.children.length).toBe(0)
+    expect(panel.refs.noUpdatesMessage.style.display).not.toBe('none')
+
+  describe "version pinned packages message", ->
+    it 'shows a message when there are pinned version packages', ->
+      spyOn(packageManager, 'getVersionPinnedPackages').andReturn(['foo', 'bar', 'baz'])
+      panel.beforeShow(updates: [])
+      expect(panel.refs.versionPinnedPackagesMessage.style.display).not.toBe('none')
+
+    it 'does not show a message when there are no version pinned packages', ->
+      spyOn(packageManager, 'getVersionPinnedPackages').andReturn([])
+      panel.beforeShow(updates: [])
+      expect(panel.refs.versionPinnedPackagesMessage.style.display).toBe('none')
+
+  describe "the Update All button", ->
+    packA =
+      name: 'test-package-a'
+      description: 'some description'
+      latestVersion: '99.0.0'
+      version: '1.0.0'
+    packB =
+      name: 'test-package-b'
+      description: 'some description'
+      latestVersion: '99.0.0'
+      version: '1.0.0'
+    packC =
+      name: 'test-package-c'
+      description: 'some description'
+      latestVersion: '99.0.0'
+      version: '1.0.0'
+
+    [cardA, cardB, cardC] = []
+    [resolveA, resolveB, resolveC, rejectA, rejectB, rejectC] = []
+
+    beforeEach ->
+      # skip packman stubbing
+      panel.beforeShow(updates: [packA, packB, packC])
+
+      [cardA, cardB, cardC] = panel.packageCards
+
+      # fake a git url package
+      cardC.pack.apmInstallSource = {type: 'git', sha: 'cf23df2207d99a74fbe169e3eba035e633b65d94'}
+      cardC.pack.latestSha = 'a296114f3d0deec519a41f4c62e7fc56075b7f01'
+
+      spyOn(cardA, 'update').andReturn(new Promise((resolve, reject) -> [resolveA, rejectA] = [resolve, reject]))
+      spyOn(cardB, 'update').andReturn(new Promise((resolve, reject) -> [resolveB, rejectB] = [resolve, reject]))
+      spyOn(cardC, 'update').andReturn(new Promise((resolve, reject) -> [resolveC, rejectC] = [resolve, reject]))
+
+      atom.config.set("settings-view.packageUpdateConcurrency", -1)
+
+    it 'attempts to update all packages and prompts to restart if at least one package updates successfully', ->
+      expect(atom.notifications.getNotifications().length).toBe 0
+      expect(panel.refs.updateAllButton).toBeVisible()
+
+      panel.updateAll()
+
+      resolveA()
+      rejectB('Error updating package')
+
+      waits 0
+      runs ->
+        expect(atom.notifications.getNotifications().length).toBe 0
+
+        resolveC()
+
+      waitsFor ->
+        atom.notifications.getNotifications().length is 1
+
+      runs ->
+        notifications = atom.notifications.getNotifications()
+        expect(notifications.length).toBe 1
+        notif = notifications[0]
+
+        expect(notif.options.detail).toBe 'test-package-a@1.0.0 -> 99.0.0\ntest-package-b@1.0.0 -> 99.0.0\ntest-package-c@cf23df22 -> a296114f'
+
+        expect(notif.options.buttons.length).toBe(2)
+
+        spyOn(atom, 'restartApplication')
+        notif.options.buttons[0].onDidClick()
+        expect(atom.restartApplication).toHaveBeenCalled()
+
+        spyOn(notif, 'dismiss')
+        notif.options.buttons[1].onDidClick()
+        expect(notif.dismiss).toHaveBeenCalled()
+
+    it 'works with queue enabled', ->
+      expect(panel.refs.updateAllButton).not.toBeDisabled()
+      atom.config.set("settings-view.packageUpdateConcurrency", 2)
+
+      panel.updateAll()
+
+      resolveA()
+      resolveB()
+      resolveC()
+
+      waitsFor ->
+        panel.refs.updateAllButton.style.display is 'none'
+
+    it 'becomes hidden if all updates succeed', ->
+      expect(panel.refs.updateAllButton).not.toBeDisabled()
+
+      panel.updateAll()
+
+      expect(panel.refs.updateAllButton).toBeDisabled()
+
+      resolveA()
+      resolveB()
+      resolveC()
+
+      waitsFor ->
+        panel.refs.updateAllButton.style.display is 'none'
+
+    it 'remains enabled and visible if not all updates succeed', ->
+      expect(panel.refs.updateAllButton).not.toBeDisabled()
+
+      panel.updateAll()
+
+      expect(panel.refs.updateAllButton).toBeDisabled()
+
+      resolveA()
+      rejectB('Error updating package')
+      resolveC()
+
+      waitsFor ->
+        panel.refs.updateAllButton.disabled is false
+
+      runs ->
+        expect(panel.refs.updateAllButton).toBeVisible()
+
+    it 'does not attempt to update packages that are already updating', ->
+      cardA.update()
+      packageManager.emitPackageEvent 'updating', packA
+      panel.updateAll()
+
+      expect(cardA.update.calls.length).toBe 1
+
+  describe 'the Check for Updates button', ->
+    pack =
+      name: 'test-package'
+      description: 'some description'
+      latestVersion: '99.0.0'
+      version: '1.0.0'
+
+    beforeEach ->
+      # skip packman stubbing - without this, getOutdated() is called another time
+      # this is not an issue in actual usage as getOutdated() isn't blocked on a spy
+      panel.beforeShow(updates: [pack])
+
+    it 'disables itself when clicked until the list of outdated packages is returned', ->
+      # Updates panel checks for updates on initialization so resolve the promise
+      resolveOutdated()
+
+      waits 0
+      runs ->
+        expect(panel.refs.checkButton.disabled).toBe false
+
+        panel.checkForUpdates()
+        expect(panel.refs.checkButton.disabled).toBe true
+
+        resolveOutdated()
+
+      waits 0
+      runs ->
+        expect(panel.refs.checkButton.disabled).toBe false
+
+    it 'clears the outdated cache when checking for updates', ->
+      # This spec just tests that we're passing the clearCache bool through, not the actual implementation
+      # For that, look at the PackageManager specs
+      resolveOutdated()
+      waits 0
+      runs ->
+        panel.refs.checkButton.click()
+        expect(packageManager.getOutdated).toHaveBeenCalledWith true
+
+    it 'is disabled when packages are updating', ->
+      # Updates panel checks for updates on initialization so resolve the promise
+      resolveOutdated()
+
+      waits 0
+      runs ->
+        expect(panel.refs.checkButton.disabled).toBe false
+
+        packageManager.emitPackageEvent 'updating', {name: 'packA'}
+        expect(panel.refs.checkButton.disabled).toBe true
+
+        packageManager.emitPackageEvent 'updating', {name: 'packB'}
+        expect(panel.refs.checkButton.disabled).toBe true
+
+        packageManager.emitPackageEvent 'updated', {name: 'packB'}
+        expect(panel.refs.checkButton.disabled).toBe true
+
+        packageManager.emitPackageEvent 'update-failed', {name: 'packA'}
+        expect(panel.refs.checkButton.disabled).toBe false
diff --git a/packages/settings-view/spec/utils-spec.coffee b/packages/settings-view/spec/utils-spec.coffee
new file mode 100644
index 000000000..649c40258
--- /dev/null
+++ b/packages/settings-view/spec/utils-spec.coffee
@@ -0,0 +1,11 @@
+{ownerFromRepository} = require '../lib/utils'
+
+describe "Utils", ->
+  describe "ownerFromRepository", ->
+    it "handles a long github url", ->
+      owner = ownerFromRepository("http://github.com/omgwow/some-package")
+      expect(owner).toBe("omgwow")
+
+    it "handles a short github url", ->
+      owner = ownerFromRepository("omgwow/some-package")
+      expect(owner).toBe("omgwow")
diff --git a/packages/settings-view/styles/docks.less b/packages/settings-view/styles/docks.less
new file mode 100644
index 000000000..b230d72fd
--- /dev/null
+++ b/packages/settings-view/styles/docks.less
@@ -0,0 +1,154 @@
+@import "ui-variables";
+
+// Dock overrides
+// Allows settings to be used in left/right dock
+
+atom-dock.left .settings-view,
+atom-dock.right .settings-view {
+  flex-direction: column;
+
+  &.pane-item {
+    background-color: @tool-panel-background-color;
+  }
+
+  .config-menu {
+    flex: none;
+    display: flex;
+    flex-wrap: wrap;
+    align-items: center;
+    justify-content: center;
+    padding: @component-padding/2;
+    min-width: 0;
+    max-width: none;
+    border: none;
+    border-bottom: 1px solid @base-border-color;
+    background-color: inherit;
+    overflow-x: initial;
+
+    .nav {
+      display: contents; // hide from DOM
+
+      & > li > a {
+        padding: 0 .5em;
+        border-radius: @component-border-radius;
+      }
+
+      .icon:before {
+        display: none;
+      }
+    }
+
+    .button-area {
+      display: contents; // hide from DOM
+
+      .icon-link-external {
+        font-size: 0;
+        width: auto;
+        margin: 0 @component-padding/2;
+        padding: @component-padding/4 @component-padding/2;
+        overflow: hidden;
+        &:before {
+          font-size: 16px;
+          margin: 0;
+        }
+      }
+    }
+  }
+
+  .panels .panels-item {
+    min-width: 100px;
+  }
+
+  .section,
+  .section:first-child, .settings-view .section:last-child {
+    padding: @component-padding*1.5;
+  }
+
+  .sub-section:not(.collapsed) .package-container {
+    padding-bottom: 0;
+  }
+
+  section .section-heading,
+  .section .section-heading {
+    font-size: 1.25em;
+  }
+
+  .sub-section .sub-section-heading {
+    font-size: 1.15em;
+
+    &.has-items::before {
+      margin-right: 0;
+      font-size: 1.15em;
+    }
+  }
+
+  .setting-title {
+    font-size: 1.1em;
+    font-weight: 500;
+    color: @text-color-highlight;
+  }
+
+  .form-control {
+    font-size: 1.1em;
+  }
+
+  .package-card {
+    padding: @component-padding;
+    font-size: inherit;
+    background-color: mix(@tool-panel-background-color, @base-background-color, 25%);
+
+    &:hover {
+      background-color: mix(@tool-panel-background-color, @base-background-color, 75%);
+    }
+
+    .package-name {
+      font-size: inherit;
+      font-weight: 600;
+    }
+
+    .package-version {
+      font-size: .9em;
+      color: @text-color-subtle;
+      font-weight: 400;
+    }
+
+    .meta {
+      display: block;
+    }
+
+    .meta-user .avatar {
+      width: 20px;
+      height: 20px;
+    }
+    .meta-user .author {
+      margin-left: .5em;
+    }
+
+    .btn-toolbar {
+      .btn-group {
+        display: flex;
+        float: none;
+        .btn {
+          flex: 1 1 auto;
+          overflow: hidden;
+          &.status-indicator {
+            flex: none;
+            border: none;
+          }
+        }
+      }
+    }
+
+  }
+
+  .themes-panel {
+    .themes-picker-item {
+      margin-top: @component-padding*1.5;
+    }
+    .theme-description {
+      margin: @component-padding/2 0;
+    }
+  }
+
+
+}
diff --git a/packages/settings-view/styles/package-card.less b/packages/settings-view/styles/package-card.less
new file mode 100644
index 000000000..c007bb353
--- /dev/null
+++ b/packages/settings-view/styles/package-card.less
@@ -0,0 +1,279 @@
+@import "octicon-mixins";
+@import "ui-variables";
+@import "variables";
+
+.settings-view {
+
+  // TODO: Somehow unify the "card".
+
+  .package-card {
+    padding: @component-padding*1.5;
+    margin-bottom: @component-padding;
+    list-style-type: none;
+    font-size: 1.2em;
+    border-radius: @component-border-radius*2;
+    border: 1px solid @base-border-color;
+    background-color: @package-card-background-color;
+    overflow: hidden;
+    cursor: pointer;
+    -webkit-user-select: none;
+
+    &:hover {
+      background-color: contrast(@package-card-background-color, darken(@package-card-background-color, 2%), lighten(@package-card-background-color, 2%));
+    }
+    &:active {
+      background-color: @package-card-background-color;
+    }
+
+    &.disabled {
+      background-color: @package-card-disabled-background-color;
+      .body,
+      .avatar,
+      .author,
+      .stats {
+        opacity: .5;
+      }
+    }
+
+    &.col-lg-4 {
+      min-width: 190px;
+      padding: @component-padding 0;
+      padding-left: @component-padding;
+      padding-right: @component-padding;
+    }
+
+    .thumbnail {
+      border-radius: 3px;
+      margin: 0;
+      min-height: 140px;
+      color: @text-color;
+      border-radius: @component-border-radius*2;
+      border: 1px solid @base-border-color;
+      background-color: @package-card-background-color;
+
+      .caption {
+        width: 100%;
+        position: relative;
+      }
+    }
+    .package-name {
+      margin-right: .5em;
+      font-weight: bolder;
+      color: @text-color-highlight;
+    }
+
+    .package-version {
+      font-size: .8em;
+      margin-right: @component-padding;
+    }
+
+    .description {
+      color: @text-color;
+      overflow: hidden;
+      min-height: 38px;
+      max-height: 38px;
+      text-overflow: ellipsis;
+      display: -webkit-box;
+      -webkit-line-clamp: 2; /* number of lines to show */
+      -webkit-box-orient: vertical;
+    }
+
+    .package-message p:last-child {
+      margin: 0;
+    }
+
+    .downloads {
+      color: @text-color-highlight;
+      overflow: hidden;
+      text-overflow: ellipsis;
+      display: -webkit-box;
+      -webkit-line-clamp: 1; /* number of lines to show */
+      -webkit-box-orient: vertical;
+    }
+
+    .package-status {
+      right: 0px;
+      top: 5px;
+      text-align: center;
+
+      &.icon-cloud-download {
+        color: #428bca;
+      }
+
+      &.icon-check {
+        color: #6CC644;
+      }
+
+      &.icon-alert {
+        color: #BD2C00;
+      }
+    }
+
+    .card-name {
+      font-weight: 300;
+      margin: 0 0 .2em 0;
+      font-size: 1.2em;
+      line-height: 1.4;
+
+      .css-truncate-target {
+        color: $greenDark;
+      }
+    }
+
+    .stats {
+
+      .stats-item {
+        margin-left: @component-padding*1.5;
+        height: 26px;
+        display: inline-block;
+        line-height: 24px;
+        vertical-align: top;
+
+        .icon {
+          color: @text-color-subtle;
+        }
+      }
+
+      .star-box {
+        display: inline-block;
+        vertical-align: top;
+
+        .star-button {
+          padding: 0 6px;
+
+          .octicon {
+            margin-right: 0px;
+          }
+        }
+      }
+    }
+
+    .body {
+      .css-truncate-target {
+        max-width: 100%;
+      }
+    }
+
+    .package-description {
+      white-space: normal;
+      line-height: 1.4;
+    }
+
+    .meta {
+      display: flex;
+      flex-wrap: wrap;
+      justify-content: flex-end;
+      width: 100%;
+
+      a.linked-octicon {
+        text-decoration: none;
+
+        &:hover {
+          .octicon {
+            color: $greenDark;
+          }
+
+          .value {
+            color: $greenDark;
+          }
+        }
+      }
+
+      .action {
+        border-radius: 3px;
+        padding: 3px 6px;
+
+        &:hover {
+          background-color: #eaeaea;
+        }
+      }
+
+      .value {
+        color: #999;
+      }
+    }
+
+    .meta-user {
+      flex: 1 0 auto;
+      margin-top: @component-padding;
+      margin-right: @component-padding;
+
+      .avatar {
+        border-radius: @component-border-radius;
+        height: 24px;
+        width: 24px;
+        display: inline-block;
+        vertical-align: middle;
+        background-color: hsla(0,0%,0%,.1);
+      }
+
+      .author {
+        color: @text-color-subtle;
+        margin-left: @component-padding;
+        &:focus {
+          outline: none;
+        }
+      }
+    }
+
+    .meta-controls {
+      margin-top: @component-padding/2;
+
+      .install-button.is-installing,
+      .uninstall-button.is-uninstalling {
+        opacity: 1; // override disabled style
+        background-image: linear-gradient(to right, transparent 50%, hsla(0,0%,0%,.15) 50%);
+        background-size: 10px 100%;
+        -webkit-animation: available-package-is-installing .5s linear infinite;
+      }
+
+      .status-indicator {
+        padding: 0;
+        width: @component-padding/2;
+        min-width: 4px;
+        pointer-events: none;
+        transition: background .4s;
+        background: @background-color-success;
+        &.is-disabled {
+          background: @background-color-warning;
+        }
+      }
+
+      .btn-toolbar > .btn-group {
+        float: left;
+        margin: @component-padding/2 0 0 @component-padding/2;
+      }
+    }
+
+    .meta-lower {
+      padding: 13px;
+      background-color: @input-background-color;
+      line-height: 1;
+    }
+
+    &.blank-slate {
+      text-align: center;
+      color: $beigeDark;
+      height: 132px;
+      line-height: 132px;
+    }
+
+    // End copy-paste from atom.io
+  }
+
+  // Remove hover styles if it's in a detail view
+  .package-detail .package-card {
+    cursor: default;
+    &:hover {
+      background-color: @package-card-background-color;
+    }
+    &.disabled {
+      background-color: @package-card-disabled-background-color;
+    }
+  }
+
+}
+
+@-webkit-keyframes available-package-is-installing {
+  100% { background-position: -10px 0px; }
+}
diff --git a/packages/settings-view/styles/package-readme.less b/packages/settings-view/styles/package-readme.less
new file mode 100644
index 000000000..e155403ac
--- /dev/null
+++ b/packages/settings-view/styles/package-readme.less
@@ -0,0 +1,79 @@
+// Package README
+
+@import "ui-variables";
+
+.settings-view {
+
+  .package-readme {
+    font-size: 1.25em;
+
+    h1 { font-size: 2em;    margin-top: 1.5em; }
+    h2 { font-size: 1.75em; margin-top: 1.5em; }
+    h3 { font-size: 1.5em;  margin-top: 1.75em; }
+    h4 { font-size: 1.25em; margin-top: 1.25em; }
+    h1, h2, h3, h4 {
+      color: @text-color-highlight;
+    }
+
+    a {
+      color: @text-color-info;
+    }
+
+    hr {
+      border-color: @text-color-subtle;
+    }
+
+    blockquote {
+      border-left-color: @text-color-subtle;
+    }
+
+    pre {
+      margin-bottom: 1em;
+    }
+
+    img {
+      max-width: 100%;
+    }
+
+    table {
+      display: block;
+      margin-bottom: 1em;
+      width: 100%;
+      overflow: auto;
+      word-break: normal;
+
+      th {
+        font-weight: bold;
+        text-align: center;
+      }
+
+      th, td {
+        padding: 6px 13px;
+        border: 1px solid @base-border-color;
+      }
+
+      tr {
+        border-top: 1px solid @base-border-color;
+        background-color: @base-background-color;
+        &:nth-child(2n) {
+          background-color: @background-color-highlight;
+        }
+      }
+    }
+
+    kbd {
+      display: inline-block;
+      padding: .3em .4em;
+      font-size: .8em;
+      line-height: 1;
+      color: @text-color-highlight;
+      vertical-align: middle;
+      background-color: lighten(@base-background-color, 10%);
+      border: solid 1px @base-border-color;
+      border-bottom-color: darken(@base-border-color, 10%);
+      border-radius: @component-border-radius;
+      box-shadow: inset 0 -1px 0 darken(@base-border-color, 10%);
+    }
+
+  }
+}
diff --git a/packages/settings-view/styles/settings-view.less b/packages/settings-view/styles/settings-view.less
new file mode 100644
index 000000000..456b0a098
--- /dev/null
+++ b/packages/settings-view/styles/settings-view.less
@@ -0,0 +1,764 @@
+@import "octicon-mixins";
+@import "octicon-utf-codes";
+@import "ui-variables";
+
+@section-padding: 2 * @component-padding;
+@breadcrumb-padding: 2 * @component-padding;
+
+.settings-view {
+  display: flex;
+
+  .breadcrumb {
+    margin-bottom: 0;
+    padding: 0 @breadcrumb-padding;
+    font-size: 1.125em;
+    line-height: 3rem;
+    color: @text-color-subtle;
+    list-style: none;
+    border-bottom: 1px solid @base-border-color;
+    background-color: @base-background-color;
+
+    + .section {
+      border-top: none;
+    }
+
+    > li {
+      display: inline-block;
+      a {
+        color: @text-color;
+      }
+
+      + li:before {
+        content: "/"; // Unicode space added since inline-block means non-collapsing white-space
+        padding: 0 .75em ;
+      }
+    }
+
+    > .active a {
+      font-weight: 600;
+      color: @text-color-highlight;
+    }
+
+  }
+
+  .text {
+    color: @text-color;
+  }
+
+  .alert-type(@tx; @bg) {
+    @alert-background-color: mix(@bg, @base-background-color, 10%);
+    color: contrast(@alert-background-color, darken(@tx, 20%), lighten(@tx, 20%) );
+    border-color: darken(@alert-background-color, 10%);
+    background-color: @alert-background-color;
+
+    .alert-link {
+      color: inherit;
+      text-decoration: underline;
+    }
+  }
+
+  .alert-info     { .alert-type(@text-color-info;    @background-color-info); }
+  .alert-success  { .alert-type(@text-color-success; @background-color-success); }
+  .alert-warning  { .alert-type(@text-color-warning; @background-color-warning); }
+  .alert-error,
+  .alert-danger   { .alert-type(@text-color-error;   @background-color-error); }
+
+
+  .error-message {
+    .alert {
+      margin-bottom: 0;
+    }
+
+    .close {
+      top: -6px; // magic number... for now
+    }
+
+    .error-details {
+      .alert-type(@text-color-error;   @background-color-error);
+    }
+
+    .error-link {
+      color: inherit;
+      text-decoration: underline;
+      margin-left: @component-padding/2;
+    }
+  }
+
+  select.form-control {
+    color: @text-color;
+    border-color: @button-border-color;
+    background-color: @button-background-color;
+    &:hover,
+    &:focus {
+      box-shadow: none;
+      background-color: @button-background-color-hover;
+    }
+  }
+
+  .select-container {
+    display: flex;
+    align-items: stretch;
+  }
+
+  .themes-picker-item .btn {
+    margin-left: 2px;
+    &::before {
+      margin-right: 0;
+      text-align: left;
+    }
+  }
+
+  .checkbox {
+    padding-left: 2.25em;
+    label {
+      padding-left: 0;
+      display: block;
+    }
+    .setting-title {
+      display: inline-block;
+    }
+  }
+  input[type="checkbox"] {
+    margin: 0 .75em 0 -2.25em;
+  }
+
+  .color {
+    padding-left: 5em;
+    .setting-title {
+      margin-top: .15em;
+    }
+    .setting-description {
+      margin-top: -0.5em;
+    }
+  }
+  input[type="color"] {
+    float: left;
+    margin: 0 0 0 -5em;
+    padding: 0;
+    width: 4em;
+    height: 1.6em;
+    border-radius: 4px;
+    border: 1px solid @base-border-color;
+    background: darken(@base-background-color, 2%);
+    &::-webkit-color-swatch-wrapper {
+      padding: 2px;
+      margin: 0;
+      border-radius: inherit;
+    }
+    &::-webkit-color-swatch {
+      border-radius: 2px;
+      border: 1px solid hsla(0,0%,0%,.1);
+    }
+  }
+
+  .editor-container {
+    margin: @component-padding*2 0;
+    &:last-child {
+      margin-bottom: 0;
+    }
+    &.settings-filter {
+      margin-bottom: 36px;
+    }
+  }
+
+  .section {
+    padding: @section-padding;
+    border-top: 1px solid @base-border-color;
+    &:first-child,
+    &:last-child {
+      padding: @section-padding;
+    }
+    &.section:empty {
+      padding: 0;
+      border-top: none;
+    }
+
+    atom-text-editor[mini] {
+      opacity: .75;
+      .selection .region {
+        background-color: contrast(@input-background-color, lighten(@input-background-color, 8%), darken(@input-background-color, 8%) );
+      }
+    }
+
+    atom-text-editor[mini].is-focused {
+      opacity: 1;
+      .selection .region {
+      background-color: contrast(@input-background-color, lighten(@input-background-color, 12%), darken(@input-background-color, 12%) );
+      }
+    }
+  }
+
+  div > .package-detail section.section.settings-panel {
+      border-top: 1px solid @base-border-color;
+  }
+
+  .section-container {
+    width: 100%;
+    max-width: 800px;
+
+    &.updates-container {
+      .package-container {
+        > .row {
+          margin-left: -@component-padding;
+          margin-right: -@component-padding;
+        }
+      }
+      .native-key-bindings, .alert-info {
+        margin-bottom: 15px;
+      }
+    }
+  }
+
+  section .section-heading,
+  .section .section-heading {
+    margin-bottom: @component-padding*2;
+    color: @text-color-highlight;
+    font-size: 1.75em;
+    font-weight: bold;
+    line-height: 1;
+    -webkit-user-select: none;
+    cursor: default;
+  }
+
+  .sub-section-heading.icon:before,
+  .section-heading.icon:before {
+    margin-right: @component-padding*.8;
+  }
+
+  .section-heading-count {
+    margin-left: .5em;
+  }
+
+  .section-body {
+    margin-top: 20px;
+  }
+
+  .sub-section {
+
+    .sub-section-heading {
+      position: sticky;
+      top: -1px; // -1px fixes a rounding issue on retina screens
+      z-index: 1;
+      margin: 0;
+      padding: @component-padding 0;
+      font-size: 1.4em;
+      font-weight: bold;
+      line-height: 1;
+      color: @text-color-highlight;
+      background-color: @base-background-color;
+      -webkit-user-select: none;
+
+      &.has-items {
+        cursor: pointer;
+
+        &::before {
+          .icon(20px);
+          content: @chevron-down;
+          color: @text-color-subtle;
+        }
+
+        &:hover:after {
+          color: @text-color-highlight;
+        }
+      }
+    }
+
+    .sub-section-body {
+      margin-top: @component-padding;
+      margin-bottom: @component-padding*3;
+      margin-left: 6px;
+      padding-left: 14px;
+      border-left: 1px solid @base-border-color;
+    }
+
+    &.collapsed {
+      .sub-section-heading.has-items:before {
+        content: @chevron-right;
+      }
+      .package-container .package-card,
+      .sub-section-body {
+        display: none !important;
+      }
+    }
+  }
+
+  .control-label {
+    -webkit-user-select: none;
+    cursor: default;
+  }
+
+  .setting-title {
+    font-size: 1.2em;
+    -webkit-user-select: none;
+  }
+
+  .setting-description {
+    color: @text-color-subtle;
+    -webkit-user-select: none;
+    cursor: default;
+
+    &:empty {
+      display: none;
+    }
+  }
+
+  .link {
+    color: @text-color-info;
+
+    &:hover, &:focus {
+      color: lighten(@text-color-info, 4%);
+    }
+  }
+
+  .config-menu {
+    flex: 1.6;
+    min-width: 180px;
+    max-width: 240px;
+    -webkit-user-select: none;
+    user-select: none;
+    padding-top: @component-padding;
+    background-color: lighten(@base-background-color, 2%);
+    border-right: 1px solid @base-border-color;
+    overflow-x: auto;
+
+    .icon:before {
+      text-align: center;
+    }
+
+    .panels-packages{
+      flex-grow: 1;
+      overflow: auto;
+      height: 0;
+
+      li + li {
+        margin-top: 0;
+      }
+
+      li > a {
+        border-radius: 1px !important;
+        padding: 12px 14px;
+        font-weight: bold;
+        line-height: 16px;
+        opacity: .85;
+        transition: opacity .1s ease-in;
+        box-shadow: inset 0 -1px 0 rgba(0,0,0, 7%);
+
+        &:hover {
+          opacity: 1;
+          box-shadow: inset 0 -1px 0 rgba(0,0,0, 7%) !important;
+        }
+      }
+
+      li:first-child {margin-top:2px;}
+      li:last-child {margin-bottom: 10px;}
+
+      li.active a, li.active a:hover {
+        opacity: 1;
+        box-shadow: 0 0 0 1px darken(#3c76dd, 10%) !important;
+
+        .package-author, .package-version {
+          color: #fff;
+          opacity: .6;
+        }
+      }
+
+      .package-version {
+        line-height: 16px;
+        margin-left: 5px;
+        font-weight: normal;
+        color: #999;
+      }
+
+      .package-author {
+        font-weight: normal;
+        display: block;
+        color: #999;
+      }
+    }
+
+    .button-area {
+      margin: 15px; // same as nav
+      > .btn {
+        width: 100%;
+      }
+    }
+
+    .nav > li {
+      margin-top: 0;
+      > a {
+        border-radius: 0;
+        white-space: nowrap;
+
+        &:hover {
+          color: @text-color-highlight;
+          background-color: @background-color-highlight;
+        }
+      }
+    }
+
+    .nav > li.active > a {
+      color: @text-color-selected;
+      background-color: @background-color-selected;
+    }
+  }
+
+  .panels {
+    flex: 8.4;
+    flex-flow: column;
+    display: flex;
+    position: relative;
+    min-width: 0;
+
+   .panels-item {
+      flex: 1;
+      min-width: 372px; // magic number: fit the Settings, Uninstall and Disable button
+      overflow: auto;
+    }
+  }
+
+  .settings-panel {
+    label {
+      color: @text-color;
+    }
+
+    .control-group + .control-group {
+      margin-top:  1.5em;
+    }
+
+    .control-group .editor-container {
+      margin: 0;
+    }
+
+    .grammar-filetypes {
+      margin-top: @component-padding;
+    }
+
+    .input-radio-group .input-label {
+      margin-right: 1em;
+    }
+  }
+
+  .package-detail {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    height: 100%;
+
+    .package-keymap-table,
+    .package-grammars-table,
+    .package-snippets-table {
+      padding-top: @component-padding;
+      padding-left: @component-padding;
+
+      td {
+        white-space: nowrap;
+      }
+
+      .snippet-prefix {
+        font-family: monospace;
+      }
+    }
+
+    .package-snippets-table {
+      max-width: 100%;
+    }
+
+    .update-message {
+      padding-right: @component-padding;
+    }
+
+    .link {
+      width: -webkit-fit-content; // prevents hover area being full-width
+    }
+
+    .link,
+    .text {
+      margin: 0 15px @component-padding 15px;
+    }
+
+    .update-link,
+    .repo-link {
+      &:hover {
+        cursor: pointer;
+        text-decoration: underline;
+      }
+    }
+  }
+
+  .themes-panel {
+    .control-group {
+      margin-top:  @component-padding*3;
+    }
+    .themes-picker {
+      display: flex;
+      flex-wrap: wrap;
+      margin: 0 -@component-padding;
+    }
+    .themes-picker-item {
+      flex: 1;
+      min-width: 320px; // Enough for the UI Theme description
+      padding: 0 @component-padding;
+      .controls {
+        height: 100%;
+        display: flex;
+        flex-direction: column;
+        justify-content: space-between;
+      }
+    }
+  }
+
+  .packages {
+    display: flex;
+    flex-flow: column;
+
+    .themes-label {
+      font-size: 1.25em;
+      font-weight: bold;
+    }
+
+    .theme-chooser {
+      padding-top: @component-padding*2;
+    }
+
+    .theme-description {
+      -webkit-user-select: none;
+      cursor: default;
+    }
+
+    .package-container {
+      width: 100%;
+    }
+
+    .search-container {
+      display: flex;
+      flex-wrap: wrap;
+      margin: 0 -@component-padding/2;
+      padding-top: @component-padding*1.5;
+
+
+      .editor-container {
+        flex: 1;
+        min-width: 130px;
+        margin: @component-padding/2;
+      }
+
+      .btn-group {
+        margin: @component-padding/2;
+        padding-left: 1px; // Counter balance since btns have margin-left: -1px
+      }
+    }
+
+    .search-message {
+      margin: @component-padding 0 0;
+    }
+
+    .error-message {
+      padding: @component-padding 0;
+    }
+
+  }
+
+  .btn-retry {
+    margin-left: @component-padding;
+  }
+
+  .readme {
+    margin-top: @component-padding;
+  }
+
+  .panel-heading .label {
+    margin-left: @component-padding;
+  }
+
+  .loading-area {
+    span {
+      &::before {
+        font-size: 1.1em;
+        width: 1.1em;
+        height: 1.1em;
+      }
+    }
+  }
+
+  .error-view {
+    margin: @component-padding 0 @component-padding 0;
+  }
+
+  .packages-panel {
+    .nav {
+      .badge {
+        margin-left: @component-icon-padding;
+      }
+    }
+  }
+
+  .copy-icon {
+    cursor: pointer;
+    padding-right: 2px;
+
+    &:hover {
+      color: #2a6496;
+    }
+  }
+
+  .table {
+    table {
+      width: 100%;
+      table-layout: initial;
+    }
+
+    th {
+      padding: @component-padding - 2px @component-padding;
+      padding-left: 0;
+    }
+
+    td {
+      height: @component-line-height;
+    }
+
+    td, th {
+      padding-left: 1%;
+      padding-right: 1%;
+      white-space: nowrap;
+      overflow: hidden;
+      border-color: @base-border-color;
+    }
+
+    col.keystroke {
+      width: (15% - 2%);
+    }
+
+    col.command {
+      width: (40% - 2%);
+    }
+
+    col.source {
+      width: (10% - 2%);
+    }
+
+    col.selector {
+      width: (35%  - 2%);
+    }
+  }
+
+  .compile-tools-heading {
+    font-weight: bold;
+  }
+
+  .compile-tools-message {
+    padding-top: @component-padding;
+
+    code {
+      text-shadow: none;
+      border-width: 1px;
+      border-style: solid;
+    }
+  }
+
+  .uri-history {
+    width: 100%;
+
+    th {
+      white-space: nowrap;
+    }
+
+    td, th {
+      padding: 0 @component-padding @component-padding/2 0;
+    }
+  }
+}
+
+@media all and (max-width: 800px) {
+  .thumbnail .btn-toolbar {
+    .btn {
+      width: 100%;
+      margin: 2px 0;
+    }
+  }
+}
+
+// A tooltip that shows the body of a snippet should treat whitespace literally
+// and should align to the left so that indentation is clearer.
+.snippet-body-tooltip .tooltip-inner {
+  font-family: monospace;
+  white-space: pre !important;
+  text-align: left;
+}
+
+.package-updates-status-view:hover {
+  text-decoration: underline;
+}
+
+.available-updates-status {
+  padding-left: 2px;
+}
+
+
+// Overrides
+// TODO: Refactor + cleanup
+
+.settings-view {
+
+  .container {
+    padding: 0;
+    > .row {
+      margin-left: 0;
+      margin-right: 0;
+    }
+  }
+
+  .updates-heading-container {
+    display: flex;
+    flex-wrap: wrap;
+    justify-content: space-between;
+    align-items: center;
+  }
+
+  .update-all-button:last-child {
+    margin-left: @component-padding/2;
+  }
+
+  .keybinding-panel .is-user {
+    color: @text-color-selected;
+    background-color: @background-color-selected;
+  }
+
+  .btn-wrap-group .btn {
+    margin: 0 @component-padding/2 @component-padding/2 0;
+  }
+}
+
+.clearfix {
+  &::before {
+    display: table;
+    content: "";
+  }
+
+  &::after {
+    display: table;
+    clear: both;
+    content: "";
+  }
+}
+
+// Reset Bootstrap media queries,
+// since it breaks when resizing the treeview or in multiple panes
+
+@media (min-width: 768px) {
+  .container {
+    width: auto;
+  }
+}
+@media (min-width: 992px) {
+  .container {
+    width: auto;
+  }
+}
+@media (min-width: 1200px) {
+  .container {
+    width: auto;
+  }
+  .col-lg-8 {
+    width: 100%;
+  }
+}
diff --git a/packages/settings-view/styles/variables.less b/packages/settings-view/styles/variables.less
new file mode 100644
index 000000000..f6dc692d0
--- /dev/null
+++ b/packages/settings-view/styles/variables.less
@@ -0,0 +1,3 @@
+// Import only after ui-variables.less
+@package-card-background-color: lighten(@tool-panel-background-color, 8%);
+@package-card-disabled-background-color: darken(@package-card-background-color, 3%);
diff --git a/packages/solarized-dark-syntax/LICENSE.md b/packages/solarized-dark-syntax/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/solarized-dark-syntax/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/solarized-dark-syntax/README.md b/packages/solarized-dark-syntax/README.md
index e9092d48e..9ae915b57 100644
--- a/packages/solarized-dark-syntax/README.md
+++ b/packages/solarized-dark-syntax/README.md
@@ -1,9 +1,9 @@
 # Solarized Dark Syntax theme
 
-Atom theme using the ever popular dark [solarized](http://ethanschoonover.com/solarized) colors.
+Pulsar theme using the ever popular dark [solarized](http://ethanschoonover.com/solarized) colors.
 
 <img alt="screenshot" src="https://cloud.githubusercontent.com/assets/378023/12602908/9c252b08-c4f0-11e5-8833-6aad91b8fa34.png" srcset="https://cloud.githubusercontent.com/assets/378023/12602909/9c25b366-c4f0-11e5-9f5d-aa6a517f7d7e.png 2x">
 
-This theme is installed by default with Atom and can be activated by going to
+This theme is installed by default with Pulsar and can be activated by going to
 the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the
 _Syntax Themes_ dropdown menu.
diff --git a/packages/solarized-dark-syntax/package-lock.json b/packages/solarized-dark-syntax/package-lock.json
new file mode 100644
index 000000000..a917de367
--- /dev/null
+++ b/packages/solarized-dark-syntax/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "solarized-dark-syntax",
+  "version": "1.3.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "solarized-dark-syntax",
+      "version": "1.3.0",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.50.0"
+      }
+    }
+  }
+}
diff --git a/packages/solarized-light-syntax/LICENSE.md b/packages/solarized-light-syntax/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/solarized-light-syntax/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/solarized-light-syntax/README.md b/packages/solarized-light-syntax/README.md
index 8a0adbd83..831e8368a 100644
--- a/packages/solarized-light-syntax/README.md
+++ b/packages/solarized-light-syntax/README.md
@@ -1,9 +1,9 @@
 # Solarized Light Syntax theme
 
-Atom theme using the ever popular light [solarized](http://ethanschoonover.com/solarized) colors.
+Pulsar theme using the ever popular light [solarized](http://ethanschoonover.com/solarized) colors.
 
 <img alt="screenshot" src="https://cloud.githubusercontent.com/assets/378023/12602186/87edab3e-c4ea-11e5-8f4a-4b7defda283b.png" srcset="https://cloud.githubusercontent.com/assets/378023/12602177/78d568da-c4ea-11e5-836d-e922ca5c850a.png 2x">
 
-This theme is installed by default with Atom and can be activated by going to
+This theme is installed by default with Pulsar and can be activated by going to
 the _Themes_ section in the Settings view (`cmd-,`) and selecting it from the
 _Syntax Themes_ dropdown menu.
diff --git a/packages/solarized-light-syntax/package-lock.json b/packages/solarized-light-syntax/package-lock.json
new file mode 100644
index 000000000..264fddd79
--- /dev/null
+++ b/packages/solarized-light-syntax/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "solarized-light-syntax",
+  "version": "1.3.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "solarized-light-syntax",
+      "version": "1.3.0",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.50.0"
+      }
+    }
+  }
+}
diff --git a/packages/status-bar/.gitattributes b/packages/status-bar/.gitattributes
new file mode 100644
index 000000000..4e2a9d000
--- /dev/null
+++ b/packages/status-bar/.gitattributes
@@ -0,0 +1 @@
+spec/fixtures/*.js  text eol=lf
diff --git a/packages/status-bar/README.md b/packages/status-bar/README.md
new file mode 100644
index 000000000..b3ddd6534
--- /dev/null
+++ b/packages/status-bar/README.md
@@ -0,0 +1,61 @@
+# Status Bar package
+
+Display information about the current editor such as cursor position, file path, grammar, current branch, ahead/behind commit counts, and line diff count.
+
+![](https://f.cloud.github.com/assets/671378/2241819/f8418cb8-9ce5-11e3-87e5-109e965986d0.png)
+
+## Configuration
+
+The status bar package accepts the following configuration values:
+
+* `status-bar.cursorPositionFormat` &mdash; A string that describes the format to use for the cursor position status bar tile. It defaults to `%L:%C`. In the format string, `%L` represents the 1-based line number and `%C` represents the 1-based column number.
+
+* `status-bar.selectionCountFormat` &mdash; A string that describes the format to use for the selection count status bar tile. It defaults to `(%L, %C)`. In the format string, `%L` represents the 1-based line count and `%C` represents the 1-based character count.
+
+## API
+
+This package provides a service that you can use in other Pulsar packages. To use it, include `status-bar` in the `consumedServices` section of your `package.json`:
+
+```json
+{
+  "name": "my-package",
+  "consumedServices": {
+    "status-bar": {
+      "versions": {
+        "^1.0.0": "consumeStatusBar"
+      }
+    }
+  }
+}
+```
+
+Then, in your package's main module, call methods on the service:
+
+```coffee
+module.exports =
+  activate: -> # ...
+
+  consumeStatusBar: (statusBar) ->
+    @statusBarTile = statusBar.addLeftTile(item: myElement, priority: 100)
+
+  deactivate: ->
+    # ...
+    @statusBarTile?.destroy()
+    @statusBarTile = null
+```
+
+The `status-bar` API has four methods:
+
+  * `addLeftTile({ item, priority })` - Add a tile to the left side of the status bar. Lower priority tiles are placed further to the left.
+  * `addRightTile({ item, priority })` - Add a tile to the right side of the status bar. Lower priority tiles are placed further to the right.
+
+The `item` parameter to these methods can be a DOM element, a [jQuery object](http://jquery.com), or a model object for which a view provider has been registered in the [the view registry](https://atom.io/docs/api/latest/ViewRegistry).
+
+  * `getLeftTiles()` - Retrieve all of the tiles on the left side of the status bar.
+  * `getRightTiles()` - Retrieve all of the tiles on the right side of the status bar
+
+All of these methods return `Tile` objects, which have the following methods:
+
+  * `getPriority()` - Retrieve the priority that was assigned to the `Tile` when it was created.
+  * `getItem()` - Retrieve the `Tile`'s item.
+  * `destroy()` - Remove the `Tile` from the status bar.
diff --git a/packages/status-bar/lib/cursor-position-view.coffee b/packages/status-bar/lib/cursor-position-view.coffee
new file mode 100644
index 000000000..847edd2c7
--- /dev/null
+++ b/packages/status-bar/lib/cursor-position-view.coffee
@@ -0,0 +1,63 @@
+{Disposable} = require 'atom'
+
+module.exports =
+class CursorPositionView
+  constructor: ->
+    @viewUpdatePending = false
+
+    @element = document.createElement('status-bar-cursor')
+    @element.classList.add('cursor-position', 'inline-block')
+    @goToLineLink = document.createElement('a')
+    @goToLineLink.classList.add('inline-block')
+    @element.appendChild(@goToLineLink)
+
+    @formatString = atom.config.get('status-bar.cursorPositionFormat') ? '%L:%C'
+
+    @activeItemSubscription = atom.workspace.onDidChangeActiveTextEditor (activeEditor) => @subscribeToActiveTextEditor()
+
+    @subscribeToConfig()
+    @subscribeToActiveTextEditor()
+
+    @tooltip = atom.tooltips.add(@element, title: => "Line #{@row}, Column #{@column}")
+
+    @handleClick()
+
+  destroy: ->
+    @activeItemSubscription.dispose()
+    @cursorSubscription?.dispose()
+    @tooltip.dispose()
+    @configSubscription?.dispose()
+    @clickSubscription.dispose()
+    @updateSubscription?.dispose()
+
+  subscribeToActiveTextEditor: ->
+    @cursorSubscription?.dispose()
+    selectionsMarkerLayer = atom.workspace.getActiveTextEditor()?.selectionsMarkerLayer
+    @cursorSubscription = selectionsMarkerLayer?.onDidUpdate(@scheduleUpdate.bind(this))
+    @scheduleUpdate()
+
+  subscribeToConfig: ->
+    @configSubscription?.dispose()
+    @configSubscription = atom.config.observe 'status-bar.cursorPositionFormat', (value) =>
+      @formatString = value ? '%L:%C'
+      @scheduleUpdate()
+
+  handleClick: ->
+    clickHandler = -> atom.commands.dispatch(atom.views.getView(atom.workspace.getActiveTextEditor()), 'go-to-line:toggle')
+    @element.addEventListener('click', clickHandler)
+    @clickSubscription = new Disposable => @element.removeEventListener('click', clickHandler)
+
+  scheduleUpdate: ->
+    return if @viewUpdatePending
+
+    @viewUpdatePending = true
+    @updateSubscription = atom.views.updateDocument =>
+      @viewUpdatePending = false
+      if position = atom.workspace.getActiveTextEditor()?.getCursorBufferPosition()
+        @row = position.row + 1
+        @column = position.column + 1
+        @goToLineLink.textContent = @formatString.replace('%L', @row).replace('%C', @column)
+        @element.classList.remove('hide')
+      else
+        @goToLineLink.textContent = ''
+        @element.classList.add('hide')
diff --git a/packages/status-bar/lib/file-info-view.coffee b/packages/status-bar/lib/file-info-view.coffee
new file mode 100644
index 000000000..3665494e6
--- /dev/null
+++ b/packages/status-bar/lib/file-info-view.coffee
@@ -0,0 +1,118 @@
+{Disposable} = require 'atom'
+url = require 'url'
+fs = require 'fs-plus'
+
+module.exports =
+class FileInfoView
+  constructor: ->
+    @element = document.createElement('status-bar-file')
+    @element.classList.add('file-info', 'inline-block')
+
+    @currentPath = document.createElement('a')
+    @currentPath.classList.add('current-path')
+    @element.appendChild(@currentPath)
+    @element.currentPath = @currentPath
+
+    @element.getActiveItem = @getActiveItem.bind(this)
+
+    @activeItemSubscription = atom.workspace.getCenter().onDidChangeActivePaneItem =>
+      @subscribeToActiveItem()
+    @subscribeToActiveItem()
+
+    @registerTooltip()
+    clickHandler = (event) =>
+      isShiftClick = event.shiftKey
+      @showCopiedTooltip(isShiftClick)
+      text = @getActiveItemCopyText(isShiftClick)
+      atom.clipboard.write(text)
+      setTimeout =>
+        @clearCopiedTooltip()
+      , 2000
+
+    @element.addEventListener('click', clickHandler)
+    @clickSubscription = new Disposable => @element.removeEventListener('click', clickHandler)
+
+  registerTooltip: ->
+    @tooltip = atom.tooltips.add(@element, title: ->
+      "Click to copy absolute file path (Shift + Click to copy relative path)")
+
+  clearCopiedTooltip: ->
+    @copiedTooltip?.dispose()
+    @registerTooltip()
+
+  showCopiedTooltip: (copyRelativePath) ->
+    @tooltip?.dispose()
+    @copiedTooltip?.dispose()
+    text = @getActiveItemCopyText(copyRelativePath)
+    @copiedTooltip = atom.tooltips.add @element,
+      title: "Copied: #{text}"
+      trigger: 'manual'
+      delay:
+        show: 0
+
+  getActiveItemCopyText: (copyRelativePath) ->
+    activeItem = @getActiveItem()
+    path = activeItem?.getPath?()
+    return activeItem?.getTitle?() or '' if not path?
+
+    # Make sure we try to relativize before parsing URLs.
+    if copyRelativePath
+      relativized = atom.project.relativize(path)
+      if relativized isnt path
+        return relativized
+
+    # An item path could be a url, we only want to copy the `path` part
+    if path?.indexOf('://') > 0
+      path = url.parse(path).path
+    path
+
+  subscribeToActiveItem: ->
+    @modifiedSubscription?.dispose()
+    @titleSubscription?.dispose()
+
+    if activeItem = @getActiveItem()
+      @updateCallback ?= => @update()
+
+      if typeof activeItem.onDidChangeTitle is 'function'
+        @titleSubscription = activeItem.onDidChangeTitle(@updateCallback)
+      else if typeof activeItem.on is 'function'
+        #TODO Remove once title-changed event support is removed
+        activeItem.on('title-changed', @updateCallback)
+        @titleSubscription = dispose: =>
+          activeItem.off?('title-changed', @updateCallback)
+
+      @modifiedSubscription = activeItem.onDidChangeModified?(@updateCallback)
+
+    @update()
+
+  destroy: ->
+    @activeItemSubscription.dispose()
+    @titleSubscription?.dispose()
+    @modifiedSubscription?.dispose()
+    @clickSubscription?.dispose()
+    @copiedTooltip?.dispose()
+    @tooltip?.dispose()
+
+  getActiveItem: ->
+    atom.workspace.getCenter().getActivePaneItem()
+
+  update: ->
+    @updatePathText()
+    @updateBufferHasModifiedText(@getActiveItem()?.isModified?())
+
+  updateBufferHasModifiedText: (isModified) ->
+    if isModified
+      @element.classList.add('buffer-modified')
+      @isModified = true
+    else
+      @element.classList.remove('buffer-modified')
+      @isModified = false
+
+  updatePathText: ->
+    if path = @getActiveItem()?.getPath?()
+      relativized = atom.project.relativize(path)
+      @currentPath.textContent = if relativized? then fs.tildify(relativized) else path
+    else if title = @getActiveItem()?.getTitle?()
+      @currentPath.textContent = title
+    else
+      @currentPath.textContent = ''
diff --git a/packages/status-bar/lib/git-view.coffee b/packages/status-bar/lib/git-view.coffee
new file mode 100644
index 000000000..624ab170f
--- /dev/null
+++ b/packages/status-bar/lib/git-view.coffee
@@ -0,0 +1,222 @@
+_ = require "underscore-plus"
+{CompositeDisposable, GitRepositoryAsync} = require "atom"
+
+module.exports =
+class GitView
+  constructor: ->
+    @element = document.createElement('status-bar-git')
+    @element.classList.add('git-view')
+
+    @createBranchArea()
+    @createCommitsArea()
+    @createStatusArea()
+
+    @activeItemSubscription = atom.workspace.getCenter().onDidChangeActivePaneItem =>
+      @subscribeToActiveItem()
+    @projectPathSubscription = atom.project.onDidChangePaths =>
+      @subscribeToRepositories()
+    @subscribeToRepositories()
+    @subscribeToActiveItem()
+
+  createBranchArea: ->
+    @branchArea = document.createElement('div')
+    @branchArea.classList.add('git-branch', 'inline-block')
+    @element.appendChild(@branchArea)
+    @element.branchArea = @branchArea
+
+    branchIcon = document.createElement('span')
+    branchIcon.classList.add('icon', 'icon-git-branch')
+    @branchArea.appendChild(branchIcon)
+
+    @branchLabel = document.createElement('span')
+    @branchLabel.classList.add('branch-label')
+    @branchArea.appendChild(@branchLabel)
+    @element.branchLabel = @branchLabel
+
+  createCommitsArea: ->
+    @commitsArea = document.createElement('div')
+    @commitsArea.classList.add('git-commits', 'inline-block')
+    @element.appendChild(@commitsArea)
+
+    @commitsAhead = document.createElement('span')
+    @commitsAhead.classList.add('icon', 'icon-arrow-up', 'commits-ahead-label')
+    @commitsArea.appendChild(@commitsAhead)
+
+    @commitsBehind = document.createElement('span')
+    @commitsBehind.classList.add('icon', 'icon-arrow-down', 'commits-behind-label')
+    @commitsArea.appendChild(@commitsBehind)
+
+  createStatusArea: ->
+    @gitStatus = document.createElement('div')
+    @gitStatus.classList.add('git-status', 'inline-block')
+    @element.appendChild(@gitStatus)
+
+    @gitStatusIcon = document.createElement('span')
+    @gitStatusIcon.classList.add('icon')
+    @gitStatus.appendChild(@gitStatusIcon)
+    @element.gitStatusIcon = @gitStatusIcon
+
+  subscribeToActiveItem: ->
+    activeItem = @getActiveItem()
+
+    @savedSubscription?.dispose()
+    @savedSubscription = activeItem?.onDidSave? => @update()
+
+    @update()
+
+  subscribeToRepositories: ->
+    @repositorySubscriptions?.dispose()
+    @repositorySubscriptions = new CompositeDisposable
+
+    for repo in atom.project.getRepositories() when repo?
+      @repositorySubscriptions.add repo.onDidChangeStatus ({path, status}) =>
+        @update() if path is @getActiveItemPath()
+      @repositorySubscriptions.add repo.onDidChangeStatuses =>
+        @update()
+
+  destroy: ->
+    @activeItemSubscription?.dispose()
+    @projectPathSubscription?.dispose()
+    @savedSubscription?.dispose()
+    @repositorySubscriptions?.dispose()
+    @branchTooltipDisposable?.dispose()
+    @commitsAheadTooltipDisposable?.dispose()
+    @commitsBehindTooltipDisposable?.dispose()
+    @statusTooltipDisposable?.dispose()
+
+  getActiveItemPath: ->
+    @getActiveItem()?.getPath?()
+
+  getRepositoryForActiveItem: ->
+    [rootDir] = atom.project.relativizePath(@getActiveItemPath())
+    rootDirIndex = atom.project.getPaths().indexOf(rootDir)
+    if rootDirIndex >= 0
+      atom.project.getRepositories()[rootDirIndex]
+    else
+      for repo in atom.project.getRepositories() when repo
+        return repo
+
+  getActiveItem: ->
+    atom.workspace.getCenter().getActivePaneItem()
+
+  update: ->
+    repo = @getRepositoryForActiveItem()
+    @updateBranchText(repo)
+    @updateAheadBehindCount(repo)
+    @updateStatusText(repo)
+
+  updateBranchText: (repo) ->
+    if @showGitInformation(repo)
+      head = repo.getShortHead(@getActiveItemPath())
+      @branchLabel.textContent = head
+      @branchArea.style.display = '' if head
+      @branchTooltipDisposable?.dispose()
+      @branchTooltipDisposable = atom.tooltips.add @branchArea, title: "On branch #{head}"
+    else
+      @branchArea.style.display = 'none'
+
+  showGitInformation: (repo) ->
+    return false unless repo?
+
+    if itemPath = @getActiveItemPath()
+      atom.project.contains(itemPath)
+    else
+      not @getActiveItem()?
+
+  updateAheadBehindCount: (repo) ->
+    unless @showGitInformation(repo)
+      @commitsArea.style.display = 'none'
+      return
+
+    itemPath = @getActiveItemPath()
+    {ahead, behind} = repo.getCachedUpstreamAheadBehindCount(itemPath)
+    if ahead > 0
+      @commitsAhead.textContent = ahead
+      @commitsAhead.style.display = ''
+      @commitsAheadTooltipDisposable?.dispose()
+      @commitsAheadTooltipDisposable = atom.tooltips.add @commitsAhead, title: "#{_.pluralize(ahead, 'commit')} ahead of upstream"
+    else
+      @commitsAhead.style.display = 'none'
+
+    if behind > 0
+      @commitsBehind.textContent = behind
+      @commitsBehind.style.display = ''
+      @commitsBehindTooltipDisposable?.dispose()
+      @commitsBehindTooltipDisposable = atom.tooltips.add @commitsBehind, title: "#{_.pluralize(behind, 'commit')} behind upstream"
+    else
+      @commitsBehind.style.display = 'none'
+
+    if ahead > 0 or behind > 0
+      @commitsArea.style.display = ''
+    else
+      @commitsArea.style.display = 'none'
+
+  clearStatus: ->
+    @gitStatusIcon.classList.remove('icon-diff-modified', 'status-modified', 'icon-diff-added', 'status-added', 'icon-diff-ignored', 'status-ignored')
+
+  updateAsNewFile: ->
+    @clearStatus()
+
+    @gitStatusIcon.classList.add('icon-diff-added', 'status-added')
+    if textEditor = atom.workspace.getActiveTextEditor()
+      @gitStatusIcon.textContent = "+#{textEditor.getLineCount()}"
+      @updateTooltipText("#{_.pluralize(textEditor.getLineCount(), 'line')} in this new file not yet committed")
+    else
+      @gitStatusIcon.textContent = ''
+      @updateTooltipText()
+
+    @gitStatus.style.display = ''
+
+  updateAsModifiedFile: (repo, path) ->
+    stats = repo.getDiffStats(path)
+    @clearStatus()
+
+    @gitStatusIcon.classList.add('icon-diff-modified', 'status-modified')
+    if stats.added and stats.deleted
+      @gitStatusIcon.textContent = "+#{stats.added}, -#{stats.deleted}"
+      @updateTooltipText("#{_.pluralize(stats.added, 'line')} added and #{_.pluralize(stats.deleted, 'line')} deleted in this file not yet committed")
+    else if stats.added
+      @gitStatusIcon.textContent = "+#{stats.added}"
+      @updateTooltipText("#{_.pluralize(stats.added, 'line')} added to this file not yet committed")
+    else if stats.deleted
+      @gitStatusIcon.textContent = "-#{stats.deleted}"
+      @updateTooltipText("#{_.pluralize(stats.deleted, 'line')} deleted from this file not yet committed")
+    else
+      @gitStatusIcon.textContent = ''
+      @updateTooltipText()
+
+    @gitStatus.style.display = ''
+
+  updateAsIgnoredFile: ->
+    @clearStatus()
+
+    @gitStatusIcon.classList.add('icon-diff-ignored',  'status-ignored')
+    @gitStatusIcon.textContent = ''
+    @gitStatus.style.display = ''
+    @updateTooltipText("File is ignored by git")
+
+  updateTooltipText: (text) ->
+    @statusTooltipDisposable?.dispose()
+    if text
+      @statusTooltipDisposable = atom.tooltips.add @gitStatusIcon, title: text
+
+  updateStatusText: (repo) ->
+    hideStatus = =>
+      @clearStatus()
+      @gitStatus.style.display = 'none'
+
+    itemPath = @getActiveItemPath()
+    if @showGitInformation(repo) and itemPath?
+      status = repo.getCachedPathStatus(itemPath) ? 0
+      if repo.isStatusNew(status)
+        return @updateAsNewFile()
+
+      if repo.isStatusModified(status)
+        return @updateAsModifiedFile(repo, itemPath)
+
+      if repo.isPathIgnored(itemPath)
+        @updateAsIgnoredFile()
+      else
+        hideStatus()
+    else
+      hideStatus()
diff --git a/packages/status-bar/lib/launch-mode-view.coffee b/packages/status-bar/lib/launch-mode-view.coffee
new file mode 100644
index 000000000..2611ca46e
--- /dev/null
+++ b/packages/status-bar/lib/launch-mode-view.coffee
@@ -0,0 +1,14 @@
+module.exports =
+class LaunchModeView
+  constructor: ({safeMode, devMode}={}) ->
+    @element = document.createElement('status-bar-launch-mode')
+    @element.classList.add('inline-block', 'icon', 'icon-color-mode')
+    if devMode
+      @element.classList.add('text-error')
+      @tooltipDisposable = atom.tooltips.add(@element, title: 'This window is in dev mode')
+    else if safeMode
+      @element.classList.add('text-success')
+      @tooltipDisposable = atom.tooltips.add(@element, title: 'This window is in safe mode')
+
+  detachedCallback: ->
+    @tooltipDisposable?.dispose()
diff --git a/packages/status-bar/lib/main.coffee b/packages/status-bar/lib/main.coffee
new file mode 100644
index 000000000..fecdd208c
--- /dev/null
+++ b/packages/status-bar/lib/main.coffee
@@ -0,0 +1,121 @@
+{CompositeDisposable, Emitter} = require 'atom'
+Grim = require 'grim'
+StatusBarView = require './status-bar-view'
+FileInfoView = require './file-info-view'
+CursorPositionView = require './cursor-position-view'
+SelectionCountView = require './selection-count-view'
+GitView = require './git-view'
+LaunchModeView = require './launch-mode-view'
+
+module.exports =
+  activate: ->
+    @emitters = new Emitter()
+    @subscriptions = new CompositeDisposable()
+
+    @statusBar = new StatusBarView()
+    @attachStatusBar()
+
+    @subscriptions.add atom.config.onDidChange 'status-bar.fullWidth', =>
+      @attachStatusBar()
+
+    @updateStatusBarVisibility()
+
+    @statusBarVisibilitySubscription =
+      atom.config.observe 'status-bar.isVisible', =>
+        @updateStatusBarVisibility()
+
+    atom.commands.add 'atom-workspace', 'status-bar:toggle', =>
+      if @statusBarPanel.isVisible()
+        atom.config.set 'status-bar.isVisible', false
+      else
+        atom.config.set 'status-bar.isVisible', true
+
+    {safeMode, devMode} = atom.getLoadSettings()
+    if safeMode or devMode
+      launchModeView = new LaunchModeView({safeMode, devMode})
+      @statusBar.addLeftTile(item: launchModeView.element, priority: -1)
+
+    @fileInfo = new FileInfoView()
+    @statusBar.addLeftTile(item: @fileInfo.element, priority: 0)
+
+    @cursorPosition = new CursorPositionView()
+    @statusBar.addLeftTile(item: @cursorPosition.element, priority: 1)
+
+    @selectionCount = new SelectionCountView()
+    @statusBar.addLeftTile(item: @selectionCount.element, priority: 2)
+
+    @gitInfo = new GitView()
+    @gitInfoTile = @statusBar.addRightTile(item: @gitInfo.element, priority: 0)
+
+  deactivate: ->
+    @statusBarVisibilitySubscription?.dispose()
+    @statusBarVisibilitySubscription = null
+
+    @gitInfo?.destroy()
+    @gitInfo = null
+
+    @fileInfo?.destroy()
+    @fileInfo = null
+
+    @cursorPosition?.destroy()
+    @cursorPosition = null
+
+    @selectionCount?.destroy()
+    @selectionCount = null
+
+    @statusBarPanel?.destroy()
+    @statusBarPanel = null
+
+    @statusBar?.destroy()
+    @statusBar = null
+
+    @subscriptions?.dispose()
+    @subscriptions = null
+
+    @emitters?.dispose()
+    @emitters = null
+
+    delete atom.__workspaceView.statusBar if atom.__workspaceView?
+
+  updateStatusBarVisibility: ->
+    if atom.config.get 'status-bar.isVisible'
+      @statusBarPanel.show()
+    else
+      @statusBarPanel.hide()
+
+  provideStatusBar: ->
+    addLeftTile: @statusBar.addLeftTile.bind(@statusBar)
+    addRightTile: @statusBar.addRightTile.bind(@statusBar)
+    getLeftTiles: @statusBar.getLeftTiles.bind(@statusBar)
+    getRightTiles: @statusBar.getRightTiles.bind(@statusBar)
+    disableGitInfoTile: @gitInfoTile.destroy.bind(@gitInfoTile)
+
+  attachStatusBar: ->
+    @statusBarPanel.destroy() if @statusBarPanel?
+
+    panelArgs = {item: @statusBar, priority: 0}
+    if atom.config.get('status-bar.fullWidth')
+      @statusBarPanel = atom.workspace.addFooterPanel panelArgs
+    else
+      @statusBarPanel = atom.workspace.addBottomPanel panelArgs
+
+  # Deprecated
+  #
+  # Wrap deprecation calls on the methods returned rather than
+  # Services API method which would be registered and trigger
+  # a deprecation call
+  legacyProvideStatusBar: ->
+    statusbar = @provideStatusBar()
+
+    addLeftTile: (args...) ->
+      Grim.deprecate("Use version ^1.0.0 of the status-bar Service API.")
+      statusbar.addLeftTile(args...)
+    addRightTile: (args...) ->
+      Grim.deprecate("Use version ^1.0.0 of the status-bar Service API.")
+      statusbar.addRightTile(args...)
+    getLeftTiles: ->
+      Grim.deprecate("Use version ^1.0.0 of the status-bar Service API.")
+      statusbar.getLeftTiles()
+    getRightTiles: ->
+      Grim.deprecate("Use version ^1.0.0 of the status-bar Service API.")
+      statusbar.getRightTiles()
diff --git a/packages/status-bar/lib/selection-count-view.coffee b/packages/status-bar/lib/selection-count-view.coffee
new file mode 100644
index 000000000..35bb9f6d6
--- /dev/null
+++ b/packages/status-bar/lib/selection-count-view.coffee
@@ -0,0 +1,58 @@
+_ = require 'underscore-plus'
+
+module.exports =
+class SelectionCountView
+  constructor: ->
+    @element = document.createElement('status-bar-selection')
+    @element.classList.add('selection-count', 'inline-block')
+
+    @tooltipElement = document.createElement('div')
+    @tooltipDisposable = atom.tooltips.add @element, item: @tooltipElement
+
+    @formatString = atom.config.get('status-bar.selectionCountFormat') ? '(%L, %C)'
+
+    @activeItemSubscription = atom.workspace.onDidChangeActiveTextEditor => @subscribeToActiveTextEditor()
+
+    @subscribeToConfig()
+    @subscribeToActiveTextEditor()
+
+  destroy: ->
+    @activeItemSubscription.dispose()
+    @selectionSubscription?.dispose()
+    @configSubscription?.dispose()
+    @tooltipDisposable.dispose()
+
+  subscribeToConfig: ->
+    @configSubscription?.dispose()
+    @configSubscription = atom.config.observe 'status-bar.selectionCountFormat', (value) =>
+      @formatString = value ? '(%L, %C)'
+      @scheduleUpdateCount()
+
+  subscribeToActiveTextEditor: ->
+    @selectionSubscription?.dispose()
+    activeEditor = @getActiveTextEditor()
+    selectionsMarkerLayer = activeEditor?.selectionsMarkerLayer
+    @selectionSubscription = selectionsMarkerLayer?.onDidUpdate(@scheduleUpdateCount.bind(this))
+    @scheduleUpdateCount()
+
+  getActiveTextEditor: ->
+    atom.workspace.getActiveTextEditor()
+
+  scheduleUpdateCount: ->
+    unless @scheduledUpdate
+      @scheduledUpdate = true
+      atom.views.updateDocument =>
+        @updateCount()
+        @scheduledUpdate = false
+
+  updateCount: ->
+    count = @getActiveTextEditor()?.getSelectedText().length
+    range = @getActiveTextEditor()?.getSelectedBufferRange()
+    lineCount = range?.getRowCount()
+    lineCount -= 1 if range?.end.column is 0
+    if count > 0
+      @element.textContent = @formatString.replace('%L', lineCount).replace('%C', count)
+      @tooltipElement.textContent = "#{_.pluralize(lineCount, 'line')}, #{_.pluralize(count, 'character')} selected"
+    else
+      @element.textContent = ''
+      @tooltipElement.textContent = ''
diff --git a/packages/status-bar/lib/status-bar-view.coffee b/packages/status-bar/lib/status-bar-view.coffee
new file mode 100644
index 000000000..ac707dad3
--- /dev/null
+++ b/packages/status-bar/lib/status-bar-view.coffee
@@ -0,0 +1,107 @@
+{Disposable} = require 'atom'
+Tile = require './tile'
+
+module.exports =
+class StatusBarView
+  constructor: ->
+    @element = document.createElement('status-bar')
+    @element.classList.add('status-bar')
+
+    flexboxHackElement = document.createElement('div')
+    flexboxHackElement.classList.add('flexbox-repaint-hack')
+    @element.appendChild(flexboxHackElement)
+
+    @leftPanel = document.createElement('div')
+    @leftPanel.classList.add('status-bar-left')
+    flexboxHackElement.appendChild(@leftPanel)
+    @element.leftPanel = @leftPanel
+
+    @rightPanel = document.createElement('div')
+    @rightPanel.classList.add('status-bar-right')
+    flexboxHackElement.appendChild(@rightPanel)
+    @element.rightPanel = @rightPanel
+
+    @leftTiles = []
+    @rightTiles = []
+
+    @element.getLeftTiles = @getLeftTiles.bind(this)
+    @element.getRightTiles = @getRightTiles.bind(this)
+    @element.addLeftTile = @addLeftTile.bind(this)
+    @element.addRightTile = @addRightTile.bind(this)
+
+    @bufferSubscriptions = []
+
+    @activeItemSubscription = atom.workspace.getCenter().onDidChangeActivePaneItem =>
+      @unsubscribeAllFromBuffer()
+      @storeActiveBuffer()
+      @subscribeAllToBuffer()
+
+      @element.dispatchEvent(new CustomEvent('active-buffer-changed', bubbles: true))
+
+    @storeActiveBuffer()
+
+  destroy: ->
+    @activeItemSubscription.dispose()
+    @unsubscribeAllFromBuffer()
+    @element.remove()
+
+  addLeftTile: (options) ->
+    newItem = options.item
+    newPriority = options?.priority ? @leftTiles[@leftTiles.length - 1].priority + 1
+    nextItem = null
+    for {priority, item}, index in @leftTiles
+      if priority > newPriority
+        nextItem = item
+        break
+
+    newTile = new Tile(newItem, newPriority, @leftTiles)
+    @leftTiles.splice(index, 0, newTile)
+    newElement = atom.views.getView(newItem)
+    nextElement = atom.views.getView(nextItem)
+    @leftPanel.insertBefore(newElement, nextElement)
+    newTile
+
+  addRightTile: (options) ->
+    newItem = options.item
+    newPriority = options?.priority ? @rightTiles[0].priority + 1
+    nextItem = null
+    for {priority, item}, index in @rightTiles
+      if priority < newPriority
+        nextItem = item
+        break
+
+    newTile = new Tile(newItem, newPriority, @rightTiles)
+    @rightTiles.splice(index, 0, newTile)
+    newElement = atom.views.getView(newItem)
+    nextElement = atom.views.getView(nextItem)
+    @rightPanel.insertBefore(newElement, nextElement)
+    newTile
+
+  getLeftTiles: ->
+    @leftTiles
+
+  getRightTiles: ->
+    @rightTiles
+
+  getActiveBuffer: ->
+    @buffer
+
+  getActiveItem: ->
+    atom.workspace.getCenter().getActivePaneItem()
+
+  storeActiveBuffer: ->
+    @buffer = @getActiveItem()?.getBuffer?()
+
+  subscribeToBuffer: (event, callback) ->
+    @bufferSubscriptions.push([event, callback])
+    @buffer.on(event, callback) if @buffer
+
+  subscribeAllToBuffer: ->
+    return unless @buffer
+    for [event, callback] in @bufferSubscriptions
+      @buffer.on(event, callback)
+
+  unsubscribeAllFromBuffer: ->
+    return unless @buffer
+    for [event, callback] in @bufferSubscriptions
+      @buffer.off(event, callback)
diff --git a/packages/status-bar/lib/tile.coffee b/packages/status-bar/lib/tile.coffee
new file mode 100644
index 000000000..b38d3e423
--- /dev/null
+++ b/packages/status-bar/lib/tile.coffee
@@ -0,0 +1,13 @@
+module.exports =
+class Tile
+  constructor: (@item, @priority, @collection) ->
+
+  getItem: ->
+    @item
+
+  getPriority: ->
+    @priority
+
+  destroy: ->
+    @collection.splice(@collection.indexOf(this), 1)
+    atom.views.getView(@item).remove()
diff --git a/packages/status-bar/package-lock.json b/packages/status-bar/package-lock.json
new file mode 100644
index 000000000..2bdd949ac
--- /dev/null
+++ b/packages/status-bar/package-lock.json
@@ -0,0 +1,177 @@
+{
+  "name": "status-bar",
+  "version": "1.8.17",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "status-bar",
+      "version": "1.8.17",
+      "license": "MIT",
+      "dependencies": {
+        "fs-plus": "^3.0.1",
+        "grim": "^2.0.1",
+        "underscore-plus": "^1.0.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/async": {
+      "version": "1.5.2",
+      "resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+    },
+    "node_modules/event-kit": {
+      "version": "2.5.3",
+      "resolved": "https://registry.npmjs.org/event-kit/-/event-kit-2.5.3.tgz",
+      "integrity": "sha512-b7Qi1JNzY4BfAYfnIRanLk0DOD1gdkWHT4GISIn8Q2tAf3LpU8SP2CMwWaq40imYoKWbtN4ZhbSRxvsnikooZQ=="
+    },
+    "node_modules/fs-plus": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/fs-plus/-/fs-plus-3.0.2.tgz",
+      "integrity": "sha1-a19Sp3EolMTd6f2PgfqMYN8EHz0=",
+      "dependencies": {
+        "async": "^1.5.2",
+        "mkdirp": "^0.5.1",
+        "rimraf": "^2.5.2",
+        "underscore-plus": "1.x"
+      }
+    },
+    "node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
+    },
+    "node_modules/glob": {
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
+      "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/grim": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/grim/-/grim-2.0.2.tgz",
+      "integrity": "sha512-Qj7hTJRfd87E/gUgfvM0YIH/g2UA2SV6niv6BYXk1o6w4mhgv+QyYM1EjOJQljvzgEj4SqSsRWldXIeKHz3e3Q==",
+      "dependencies": {
+        "event-kit": "^2.0.0"
+      }
+    },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "node_modules/inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
+    },
+    "node_modules/minimatch": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/minimist": {
+      "version": "0.0.8",
+      "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+      "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
+    },
+    "node_modules/mkdirp": {
+      "version": "0.5.1",
+      "resolved": "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+      "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
+      "deprecated": "Legacy versions of mkdirp are no longer supported. Please update to mkdirp 1.x. (Note that the API surface has changed to use Promises in 1.x.)",
+      "dependencies": {
+        "minimist": "0.0.8"
+      },
+      "bin": {
+        "mkdirp": "bin/cmd.js"
+      }
+    },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/rimraf": {
+      "version": "2.6.2",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
+      "integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
+      "dependencies": {
+        "glob": "^7.0.5"
+      },
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.8.3",
+      "resolved": "http://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
+      "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.6.8",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.6.8.tgz",
+      "integrity": "sha512-88PrCeMKeAAC1L4xjSiiZ3Fg6kZOYrLpLGVPPeqKq/662DfQe/KTSKdSR/Q/tucKNnfW2MNAUGSCkDf8HmXC5Q==",
+      "dependencies": {
+        "underscore": "~1.8.3"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    }
+  }
+}
diff --git a/packages/status-bar/package.json b/packages/status-bar/package.json
new file mode 100644
index 000000000..d26eb3c04
--- /dev/null
+++ b/packages/status-bar/package.json
@@ -0,0 +1,51 @@
+{
+  "name": "status-bar",
+  "version": "1.8.17",
+  "main": "./lib/main",
+  "description": "Display information about the current editor such as cursor position, file path, grammar, current branch, ahead/behind commits counts, and line diff count.",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "engines": {
+    "atom": "*"
+  },
+  "dependencies": {
+    "fs-plus": "^3.0.1",
+    "grim": "^2.0.1",
+    "underscore-plus": "^1.0.0"
+  },
+  "providedServices": {
+    "status-bar": {
+      "description": "A container for indicators at the bottom of the workspace",
+      "versions": {
+        "1.1.0": "provideStatusBar",
+        "0.58.0": "legacyProvideStatusBar"
+      }
+    }
+  },
+  "configSchema": {
+    "isVisible": {
+      "type": "boolean",
+      "default": true,
+      "description": "Show status bar at the bottom of the workspace"
+    },
+    "fullWidth": {
+      "order": 1,
+      "type": "boolean",
+      "default": true,
+      "title": "Full-width",
+      "description": "Fit the status-bar to the window's full-width"
+    },
+    "cursorPositionFormat": {
+      "order": 2,
+      "type": "string",
+      "default": "%L:%C",
+      "description": "Format for the cursor position status bar element, where %L is the line number and %C is the column number"
+    },
+    "selectionCountFormat": {
+      "order": 2,
+      "type": "string",
+      "default": "(%L, %C)",
+      "description": "Format for the selection count status bar element, where %L is the line count and %C is the character count"
+    }
+  }
+}
diff --git a/packages/status-bar/spec/built-in-tiles-spec.coffee b/packages/status-bar/spec/built-in-tiles-spec.coffee
new file mode 100644
index 000000000..919d8e4ac
--- /dev/null
+++ b/packages/status-bar/spec/built-in-tiles-spec.coffee
@@ -0,0 +1,659 @@
+fs = require 'fs-plus'
+path = require 'path'
+os = require 'os'
+process = require 'process'
+
+describe "Built-in Status Bar Tiles", ->
+  [statusBar, workspaceElement, dummyView] = []
+
+  beforeEach ->
+    workspaceElement = atom.views.getView(atom.workspace)
+    dummyView = document.createElement("div")
+    statusBar = null
+
+    waitsForPromise ->
+      atom.packages.activatePackage('status-bar')
+
+    runs ->
+      statusBar = workspaceElement.querySelector("status-bar")
+
+  describe "the file info, cursor and selection tiles", ->
+    [editor, buffer, fileInfo, cursorPosition, selectionCount] = []
+
+    beforeEach ->
+      waitsForPromise ->
+        atom.workspace.open('sample.js')
+
+      runs ->
+        [launchMode, fileInfo, cursorPosition, selectionCount] =
+          statusBar.getLeftTiles().map (tile) -> tile.getItem()
+        editor = atom.workspace.getActiveTextEditor()
+        buffer = editor.getBuffer()
+
+    describe "when associated with an unsaved buffer", ->
+      it "displays 'untitled' instead of the buffer's path, but still displays the buffer position", ->
+        waitsForPromise ->
+          atom.workspace.open()
+
+        runs ->
+          atom.views.performDocumentUpdate()
+          expect(fileInfo.currentPath.textContent).toBe 'untitled'
+          expect(cursorPosition.textContent).toBe '1:1'
+          expect(selectionCount).toBeHidden()
+
+    describe "when the associated editor's path changes", ->
+      it "updates the path in the status bar", ->
+        waitsForPromise ->
+          atom.workspace.open('sample.txt')
+
+        runs ->
+          expect(fileInfo.currentPath.textContent).toBe 'sample.txt'
+
+    describe "when associated with remote file path", ->
+      beforeEach ->
+        jasmine.attachToDOM(workspaceElement)
+        dummyView.getPath = -> 'remote://server:123/folder/remote_file.txt'
+        atom.workspace.getActivePane().activateItem(dummyView)
+
+      it "updates the path in the status bar", ->
+        # The remote path isn't relativized in the test because no remote directory provider is registered.
+        expect(fileInfo.currentPath.textContent).toBe 'remote://server:123/folder/remote_file.txt'
+        expect(fileInfo.currentPath).toBeVisible()
+
+      it "when the path is clicked", ->
+        fileInfo.currentPath.click()
+        expect(atom.clipboard.read()).toBe '/folder/remote_file.txt'
+
+      it "calls relativize with the remote URL on shift-click", ->
+        spy = spyOn(atom.project, 'relativize').andReturn 'remote_file.txt'
+        event = new MouseEvent('click', shiftKey: true)
+        fileInfo.dispatchEvent(event)
+        expect(atom.clipboard.read()).toBe 'remote_file.txt'
+        expect(spy).toHaveBeenCalledWith 'remote://server:123/folder/remote_file.txt'
+
+    describe "when file info tile is clicked", ->
+      it "copies the absolute path into the clipboard if available", ->
+        waitsForPromise ->
+          atom.workspace.open('sample.txt')
+
+        runs ->
+          fileInfo.click()
+          expect(atom.clipboard.read()).toBe fileInfo.getActiveItem().getPath()
+
+    describe "when the file info tile is shift-clicked", ->
+      it "copies the relative path into the clipboard if available", ->
+        waitsForPromise ->
+          atom.workspace.open('sample.txt')
+
+        runs ->
+          event = new MouseEvent('click', shiftKey: true)
+          fileInfo.dispatchEvent(event)
+          expect(atom.clipboard.read()).toBe 'sample.txt'
+
+    describe "when path of an unsaved buffer is clicked", ->
+      it "copies the 'untitled' into clipboard", ->
+        waitsForPromise ->
+          atom.workspace.open()
+
+        runs ->
+          fileInfo.currentPath.click()
+          expect(atom.clipboard.read()).toBe 'untitled'
+
+    describe "when buffer's path is not clicked", ->
+      it "doesn't display a path tooltip", ->
+        jasmine.attachToDOM(workspaceElement)
+        waitsForPromise ->
+          atom.workspace.open()
+
+        runs ->
+          expect(document.querySelector('.tooltip')).not.toExist()
+
+    describe "when buffer's path is clicked", ->
+      it "displays path tooltip and the tooltip disappears after ~2 seconds", ->
+        jasmine.attachToDOM(workspaceElement)
+        waitsForPromise ->
+          atom.workspace.open()
+
+        runs ->
+          fileInfo.currentPath.click()
+          expect(document.querySelector('.tooltip')).toBeVisible()
+          # extra leeway so test won't fail because tooltip disappeared few milliseconds too late
+          advanceClock(2100)
+          expect(document.querySelector('.tooltip')).not.toExist()
+
+    describe "when saved buffer's path is clicked", ->
+      it "displays a tooltip containing text 'Copied:' and an absolute native path", ->
+        jasmine.attachToDOM(workspaceElement)
+        waitsForPromise ->
+          atom.workspace.open('sample.txt')
+
+        runs ->
+          fileInfo.currentPath.click()
+          expect(document.querySelector('.tooltip')).toHaveText "Copied: #{fileInfo.getActiveItem().getPath()}"
+
+      it "displays a tooltip containing text 'Copied:' for an absolute Unix path", ->
+        jasmine.attachToDOM(workspaceElement)
+        dummyView.getPath = -> '/user/path/for/my/file.txt'
+        atom.workspace.getActivePane().activateItem(dummyView)
+
+        runs ->
+          fileInfo.currentPath.click()
+          expect(document.querySelector('.tooltip')).toHaveText "Copied: #{dummyView.getPath()}"
+
+      it "displays a tooltip containing text 'Copied:' for an absolute Windows path", ->
+        jasmine.attachToDOM(workspaceElement)
+        dummyView.getPath = -> 'c:\\user\\path\\for\\my\\file.txt'
+        atom.workspace.getActivePane().activateItem(dummyView)
+
+        runs ->
+          fileInfo.currentPath.click()
+          expect(document.querySelector('.tooltip')).toHaveText "Copied: #{dummyView.getPath()}"
+
+    describe "when unsaved buffer's path is clicked", ->
+      it "displays a tooltip containing text 'Copied: untitled", ->
+        jasmine.attachToDOM(workspaceElement)
+        waitsForPromise ->
+          atom.workspace.open()
+
+        runs ->
+          fileInfo.currentPath.click()
+          expect(document.querySelector('.tooltip')).toHaveText "Copied: untitled"
+
+    describe "when the associated editor's buffer's content changes", ->
+      it "enables the buffer modified indicator", ->
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+        editor.insertText("\n")
+        advanceClock(buffer.stoppedChangingDelay)
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(true)
+        editor.backspace()
+
+    describe "when the buffer content has changed from the content on disk", ->
+      it "disables the buffer modified indicator on save", ->
+        filePath = path.join(os.tmpdir(), "atom-whitespace.txt")
+        fs.writeFileSync(filePath, "")
+
+        waitsForPromise ->
+          atom.workspace.open(filePath)
+
+        runs ->
+          editor = atom.workspace.getActiveTextEditor()
+          expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+          editor.insertText("\n")
+          advanceClock(buffer.stoppedChangingDelay)
+          expect(fileInfo.classList.contains('buffer-modified')).toBe(true)
+
+        waitsForPromise ->
+          # TODO - remove this Promise.resolve once atom/atom#14435 lands.
+          Promise.resolve(editor.getBuffer().save())
+
+        runs ->
+          expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+
+      it "disables the buffer modified indicator if the content matches again", ->
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+        editor.insertText("\n")
+        advanceClock(buffer.stoppedChangingDelay)
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(true)
+        editor.backspace()
+        advanceClock(buffer.stoppedChangingDelay)
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+
+      it "disables the buffer modified indicator when the change is undone", ->
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+        editor.insertText("\n")
+        advanceClock(buffer.stoppedChangingDelay)
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(true)
+        editor.undo()
+        advanceClock(buffer.stoppedChangingDelay)
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+
+    describe "when the buffer changes", ->
+      it "updates the buffer modified indicator for the new buffer", ->
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+
+        waitsForPromise ->
+          atom.workspace.open('sample.txt')
+
+        runs ->
+          editor = atom.workspace.getActiveTextEditor()
+          editor.insertText("\n")
+          advanceClock(buffer.stoppedChangingDelay)
+          expect(fileInfo.classList.contains('buffer-modified')).toBe(true)
+
+      it "doesn't update the buffer modified indicator for the old buffer", ->
+        oldBuffer = editor.getBuffer()
+        expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+
+        waitsForPromise ->
+          atom.workspace.open('sample.txt')
+
+        runs ->
+          oldBuffer.setText("new text")
+          advanceClock(buffer.stoppedChangingDelay)
+          expect(fileInfo.classList.contains('buffer-modified')).toBe(false)
+
+    describe "when the associated editor's cursor position changes", ->
+      it "updates the cursor position in the status bar", ->
+        jasmine.attachToDOM(workspaceElement)
+        editor.setCursorScreenPosition([1, 2])
+        atom.views.performDocumentUpdate()
+        expect(cursorPosition.textContent).toBe '2:3'
+
+      it "does not throw an exception if the cursor is moved as the result of the active pane item changing to a non-editor (regression)", ->
+        waitsForPromise ->
+          Promise.resolve(atom.packages.deactivatePackage('status-bar')) # Wrapped so works with Promise & non-Promise deactivate
+        runs ->
+          atom.workspace.onDidChangeActivePaneItem(-> editor.setCursorScreenPosition([1, 2]))
+        waitsForPromise ->
+          atom.packages.activatePackage('status-bar')
+        runs ->
+          statusBar = workspaceElement.querySelector("status-bar")
+          cursorPosition = statusBar.getLeftTiles()[2].getItem()
+
+          atom.workspace.getActivePane().activateItem(document.createElement('div'))
+          expect(editor.getCursorScreenPosition()).toEqual([1, 2])
+          atom.views.performDocumentUpdate()
+          expect(cursorPosition).toBeHidden()
+
+    describe "when the associated editor's selection changes", ->
+      it "updates the selection count in the status bar", ->
+        jasmine.attachToDOM(workspaceElement)
+
+        editor.setSelectedBufferRange([[0, 0], [0, 0]])
+        atom.views.performDocumentUpdate()
+        expect(selectionCount.textContent).toBe ''
+
+        editor.setSelectedBufferRange([[0, 0], [0, 2]])
+        atom.views.performDocumentUpdate()
+        expect(selectionCount.textContent).toBe '(1, 2)'
+
+        editor.setSelectedBufferRange([[0, 0], [1, 30]])
+        atom.views.performDocumentUpdate()
+        expect(selectionCount.textContent).toBe "(2, 60)"
+
+      it "does not throw an exception if the cursor is moved as the result of the active pane item changing to a non-editor (regression)", ->
+        waitsForPromise ->
+          Promise.resolve(atom.packages.deactivatePackage('status-bar')) # Wrapped so works with Promise & non-Promise deactivate
+        runs ->
+          atom.workspace.onDidChangeActivePaneItem(-> editor.setSelectedBufferRange([[1, 2], [1, 3]]))
+        waitsForPromise ->
+          atom.packages.activatePackage('status-bar')
+        runs ->
+          statusBar = workspaceElement.querySelector("status-bar")
+          selectionCount = statusBar.getLeftTiles()[3].getItem()
+
+          atom.workspace.getActivePane().activateItem(document.createElement('div'))
+          expect(editor.getSelectedBufferRange()).toEqual([[1, 2], [1, 3]])
+          atom.views.performDocumentUpdate()
+          expect(selectionCount).toBeHidden()
+
+    describe "when the active pane item does not implement getCursorBufferPosition()", ->
+      it "hides the cursor position view", ->
+        jasmine.attachToDOM(workspaceElement)
+        atom.workspace.getActivePane().activateItem(dummyView)
+        atom.views.performDocumentUpdate()
+        expect(cursorPosition).toBeHidden()
+
+    describe "when the active pane item implements getTitle() but not getPath()", ->
+      it "displays the title", ->
+        jasmine.attachToDOM(workspaceElement)
+        dummyView.getTitle = -> 'View Title'
+        atom.workspace.getActivePane().activateItem(dummyView)
+        expect(fileInfo.currentPath.textContent).toBe 'View Title'
+        expect(fileInfo.currentPath).toBeVisible()
+
+    describe "when the active pane item neither getTitle() nor getPath()", ->
+      it "hides the path view", ->
+        jasmine.attachToDOM(workspaceElement)
+        atom.workspace.getActivePane().activateItem(dummyView)
+        expect(fileInfo.currentPath).toBeHidden()
+
+    describe "when the active pane item's title changes", ->
+      it "updates the path view with the new title", ->
+        jasmine.attachToDOM(workspaceElement)
+        callbacks = []
+        dummyView.onDidChangeTitle = (fn) ->
+          callbacks.push(fn)
+          {
+            dispose: ->
+          }
+        dummyView.getTitle = -> 'View Title'
+        atom.workspace.getActivePane().activateItem(dummyView)
+        expect(fileInfo.currentPath.textContent).toBe 'View Title'
+        dummyView.getTitle = -> 'New Title'
+        callback() for callback in callbacks
+        expect(fileInfo.currentPath.textContent).toBe 'New Title'
+
+    describe 'the cursor position tile', ->
+      beforeEach ->
+        atom.config.set('status-bar.cursorPositionFormat', 'foo %L bar %C')
+
+      it 'respects a format string', ->
+        jasmine.attachToDOM(workspaceElement)
+        editor.setCursorScreenPosition([1, 2])
+        atom.views.performDocumentUpdate()
+        expect(cursorPosition.textContent).toBe 'foo 2 bar 3'
+
+      it 'updates when the configuration changes', ->
+        jasmine.attachToDOM(workspaceElement)
+        editor.setCursorScreenPosition([1, 2])
+        atom.views.performDocumentUpdate()
+        expect(cursorPosition.textContent).toBe 'foo 2 bar 3'
+
+        atom.config.set('status-bar.cursorPositionFormat', 'baz %C quux %L')
+        atom.views.performDocumentUpdate()
+        expect(cursorPosition.textContent).toBe 'baz 3 quux 2'
+
+      describe "when clicked", ->
+        it "triggers the go-to-line toggle event", ->
+          eventHandler = jasmine.createSpy('eventHandler')
+          atom.commands.add('atom-text-editor', 'go-to-line:toggle', eventHandler)
+          cursorPosition.click()
+          expect(eventHandler).toHaveBeenCalled()
+
+    describe 'the selection count tile', ->
+      beforeEach ->
+        atom.config.set('status-bar.selectionCountFormat', '%L foo %C bar selected')
+
+      it 'respects a format string', ->
+        jasmine.attachToDOM(workspaceElement)
+        editor.setSelectedBufferRange([[0, 0], [1, 30]])
+        atom.views.performDocumentUpdate()
+        expect(selectionCount.textContent).toBe "2 foo 60 bar selected"
+
+      it 'updates when the configuration changes', ->
+        jasmine.attachToDOM(workspaceElement)
+        editor.setSelectedBufferRange([[0, 0], [1, 30]])
+        atom.views.performDocumentUpdate()
+        expect(selectionCount.textContent).toBe "2 foo 60 bar selected"
+
+        atom.config.set('status-bar.selectionCountFormat', 'Selection: baz %C quux %L')
+        atom.views.performDocumentUpdate()
+        expect(selectionCount.textContent).toBe "Selection: baz 60 quux 2"
+
+      it 'does not include the next line if the last selected character is a LF', ->
+        lineEndingRegExp = /\r\n|\n|\r/g
+        buffer = editor.getBuffer()
+        buffer.setText(buffer.getText().replace(lineEndingRegExp, '\n'))
+        jasmine.attachToDOM(workspaceElement)
+        editor.setSelectedBufferRange([[0, 0], [1, 0]])
+        atom.views.performDocumentUpdate()
+        expect(selectionCount.textContent).toBe "1 foo 30 bar selected"
+
+      it 'does not include the next line if the last selected character is CRLF', ->
+        lineEndingRegExp = /\r\n|\n|\r/g
+        buffer = editor.getBuffer()
+        buffer.setText(buffer.getText().replace(lineEndingRegExp, '\r\n'))
+        jasmine.attachToDOM(workspaceElement)
+        editor.setSelectedBufferRange([[0, 0], [1, 0]])
+        atom.views.performDocumentUpdate()
+        expect(selectionCount.textContent).toBe "1 foo 31 bar selected"
+
+  describe "the git tile", ->
+    gitView = null
+
+    hover = (element, fn) ->
+      # FIXME: Only use hoverDefaults once Atom 1.13 is on stable
+      hoverDelay = atom.tooltips.defaults.delay?.show ? atom.tooltips.hoverDefaults.delay.show
+      element.dispatchEvent(new CustomEvent('mouseenter', bubbles: false))
+      element.dispatchEvent(new CustomEvent('mouseover', bubbles: true))
+      advanceClock(hoverDelay)
+      fn()
+      element.dispatchEvent(new CustomEvent('mouseleave', bubbles: false))
+      element.dispatchEvent(new CustomEvent('mouseout', bubbles: true))
+      advanceClock(hoverDelay)
+
+    setupWorkingDir = (name) ->
+      dir = atom.project.getDirectories()[0]
+      target = "#{os.tmpdir()}/#{name}"
+      targetGit = target + '/.git'
+      fs.copySync(dir.resolve('git/working-dir'), path.resolve(target))
+      fs.removeSync(path.resolve(targetGit))
+      fs.copySync(dir.resolve("git/#{name}.git"), path.resolve(targetGit))
+      target
+
+    beforeEach ->
+      [gitView] = statusBar.getRightTiles().map (tile) -> tile.getItem()
+
+    describe "the git ahead/behind count labels", ->
+      beforeEach ->
+        jasmine.attachToDOM(workspaceElement)
+
+      it "shows the number of commits that can be pushed/pulled", ->
+        workingDir = setupWorkingDir('ahead-behind-repo')
+        atom.project.setPaths([workingDir])
+        filePath = atom.project.getDirectories()[0].resolve('a.txt')
+        repo = atom.project.getRepositories()[0]
+
+        waitsForPromise ->
+          atom.workspace.open(filePath)
+            .then -> repo.refreshStatus()
+
+        runs ->
+          behindElement = document.body.querySelector(".commits-behind-label")
+          aheadElement = document.body.querySelector(".commits-ahead-label")
+          expect(aheadElement).toBeVisible()
+          expect(behindElement).toBeVisible()
+          expect(aheadElement.textContent).toContain '1'
+
+      it "stays hidden when no commits can be pushed/pulled", ->
+        workingDir = setupWorkingDir('no-ahead-behind-repo')
+        atom.project.setPaths([workingDir])
+        filePath = atom.project.getDirectories()[0].resolve('a.txt')
+        repo = atom.project.getRepositories()[0]
+
+        waitsForPromise ->
+          atom.workspace.open(filePath)
+            .then -> repo.refreshStatus()
+
+        runs ->
+          behindElement = document.body.querySelector(".commits-behind-label")
+          aheadElement = document.body.querySelector(".commits-ahead-label")
+          expect(aheadElement).not.toBeVisible()
+          expect(behindElement).not.toBeVisible()
+
+    describe "the git branch label", ->
+      projectPath = null
+      beforeEach ->
+        projectPath = atom.project.getDirectories()[0].resolve('git/working-dir')
+        fs.moveSync(path.join(projectPath, 'git.git'), path.join(projectPath, '.git'))
+        jasmine.attachToDOM(workspaceElement)
+
+      afterEach ->
+        fs.moveSync(path.join(projectPath, '.git'), path.join(projectPath, 'git.git'))
+
+      it "displays the current branch for files in repositories", ->
+        atom.project.setPaths([projectPath])
+
+        waitsForPromise ->
+          atom.workspace.open('a.txt')
+
+        runs ->
+          currentBranch = atom.project.getRepositories()[0].getShortHead()
+          expect(gitView.branchArea).toBeVisible()
+          expect(gitView.branchLabel.textContent).toBe currentBranch
+
+          atom.workspace.getActivePane().destroyItems()
+          expect(gitView.branchArea).toBeVisible()
+          expect(gitView.branchLabel.textContent).toBe currentBranch
+
+          atom.workspace.getActivePane().activateItem(dummyView)
+
+        runs -> expect(gitView.branchArea).not.toBeVisible()
+
+      it "displays the current branch tooltip", ->
+        atom.project.setPaths([projectPath])
+
+        waitsForPromise ->
+          atom.workspace.open('a.txt')
+
+        runs ->
+          currentBranch = atom.project.getRepositories()[0].getShortHead()
+          hover gitView.branchArea, ->
+            expect(document.body.querySelector(".tooltip").innerText)
+              .toBe("On branch #{currentBranch}")
+
+      it "doesn't display the current branch for a file not in a repository", ->
+        atom.project.setPaths([os.tmpdir()])
+
+        waitsForPromise ->
+          atom.workspace.open(path.join(os.tmpdir(), 'temp.txt'))
+
+        runs ->
+          expect(gitView.branchArea).toBeHidden()
+
+      it "doesn't display the current branch for a file outside the current project", ->
+        waitsForPromise ->
+          atom.workspace.open(path.join(os.tmpdir(), 'atom-specs', 'not-in-project.txt'))
+
+        runs ->
+          expect(gitView.branchArea).toBeHidden()
+
+    describe "the git status label", ->
+      [repo, filePath, originalPathText, newPath, ignorePath, ignoredPath, projectPath] = []
+
+      beforeEach ->
+        projectPath = atom.project.getDirectories()[0].resolve('git/working-dir')
+        fs.moveSync(path.join(projectPath, 'git.git'), path.join(projectPath, '.git'))
+        atom.project.setPaths([projectPath])
+        filePath = atom.project.getDirectories()[0].resolve('a.txt')
+        newPath = atom.project.getDirectories()[0].resolve('new.txt')
+        fs.writeFileSync(newPath, "I'm new here")
+        ignorePath = path.join(projectPath, '.gitignore')
+        fs.writeFileSync(ignorePath, 'ignored.txt')
+        ignoredPath = path.join(projectPath, 'ignored.txt')
+        fs.writeFileSync(ignoredPath, '')
+        jasmine.attachToDOM(workspaceElement)
+
+        repo = atom.project.getRepositories()[0]
+        originalPathText = fs.readFileSync(filePath, 'utf8')
+        waitsForPromise -> repo.refreshStatus()
+
+      afterEach ->
+        fs.writeFileSync(filePath, originalPathText)
+        fs.removeSync(newPath)
+        fs.removeSync(ignorePath)
+        fs.removeSync(ignoredPath)
+        fs.moveSync(path.join(projectPath, '.git'), path.join(projectPath, 'git.git'))
+
+      it "displays the modified icon for a changed file", ->
+        waitsForPromise ->
+          atom.workspace.open(filePath)
+            .then ->
+              fs.writeFileSync(filePath, "i've changed for the worse")
+              repo.refreshStatus()
+        runs ->
+          expect(gitView.gitStatusIcon).toHaveClass('icon-diff-modified')
+
+      it "displays the 1 line added and not committed tooltip", ->
+        waitsForPromise ->
+          atom.workspace.open(filePath)
+            .then ->
+              fs.writeFileSync(filePath, "i've changed for the worse")
+              repo.refreshStatus()
+
+        runs ->
+          hover gitView.gitStatusIcon, ->
+            expect(document.body.querySelector(".tooltip").innerText)
+              .toBe("1 line added to this file not yet committed")
+
+      it "displays the x lines added and not committed tooltip", ->
+        waitsForPromise ->
+          atom.workspace.open(filePath)
+            .then ->
+              fs.writeFileSync(filePath, "i've changed#{os.EOL}for the worse")
+              repo.refreshStatus()
+
+        runs ->
+          hover gitView.gitStatusIcon, ->
+            expect(document.body.querySelector(".tooltip").innerText)
+              .toBe("2 lines added to this file not yet committed")
+
+      it "doesn't display the modified icon for an unchanged file", ->
+        waitsForPromise ->
+          atom.workspace.open(filePath)
+            .then -> repo.refreshStatus()
+
+        runs ->
+          expect(gitView.gitStatusIcon).toHaveText('')
+
+      it "displays the new icon for a new file", ->
+        waitsForPromise ->
+          atom.workspace.open(newPath)
+            .then -> repo.refreshStatus()
+
+        runs ->
+          expect(gitView.gitStatusIcon).toHaveClass('icon-diff-added')
+          hover gitView.gitStatusIcon, ->
+            expect(document.body.querySelector(".tooltip").innerText)
+              .toBe("1 line in this new file not yet committed")
+
+      it "displays the 1 line added and not committed to new file tooltip", ->
+        waitsForPromise ->
+          atom.workspace.open(newPath)
+            .then -> repo.refreshStatus()
+
+        runs ->
+          hover gitView.gitStatusIcon, ->
+            expect(document.body.querySelector(".tooltip").innerText)
+              .toBe("1 line in this new file not yet committed")
+
+      it "displays the x lines added and not committed to new file tooltip", ->
+        fs.writeFileSync(newPath, "I'm new#{os.EOL}here")
+        waitsForPromise ->
+          atom.workspace.open(newPath)
+            .then -> repo.refreshStatus()
+
+        runs ->
+          hover gitView.gitStatusIcon, ->
+            expect(document.body.querySelector(".tooltip").innerText)
+              .toBe("2 lines in this new file not yet committed")
+
+      it "displays the ignored icon for an ignored file", ->
+        waitsForPromise ->
+          atom.workspace.open(ignoredPath)
+
+        runs ->
+          expect(gitView.gitStatusIcon).toHaveClass('icon-diff-ignored')
+          hover gitView.gitStatusIcon, ->
+            expect(document.body.querySelector(".tooltip").innerText)
+              .toBe("File is ignored by git")
+
+      it "updates when a status-changed event occurs", ->
+        waitsForPromise ->
+          atom.workspace.open(filePath)
+            .then ->
+              fs.writeFileSync(filePath, "i've changed for the worse")
+              repo.refreshStatus()
+        runs ->
+          expect(gitView.gitStatusIcon).toHaveClass('icon-diff-modified')
+
+          waitsForPromise ->
+            fs.writeFileSync(filePath, originalPathText)
+            repo.refreshStatus()
+          runs ->
+            expect(gitView.gitStatusIcon).not.toHaveClass('icon-diff-modified')
+
+      it "displays the diff stat for modified files", ->
+        waitsForPromise ->
+          atom.workspace.open(filePath)
+            .then ->
+              fs.writeFileSync(filePath, "i've changed for the worse")
+              repo.refreshStatus()
+        runs ->
+          expect(gitView.gitStatusIcon).toHaveText('+1')
+
+      it "displays the diff stat for new files", ->
+        waitsForPromise ->
+          atom.workspace.open(newPath)
+            .then -> repo.refreshStatus()
+
+        runs ->
+          expect(gitView.gitStatusIcon).toHaveText('+1')
+
+      it "does not display for files not in the current project", ->
+        waitsForPromise ->
+          atom.workspace.open('/tmp/atom-specs/not-in-project.txt')
+
+        runs ->
+          expect(gitView.gitStatusIcon).toBeHidden()
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/FETCH_HEAD b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/FETCH_HEAD
new file mode 100644
index 000000000..0ed145f13
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/FETCH_HEAD
@@ -0,0 +1 @@
+91c6b2a0a2c0d77bb9ce169154ef4263a3afc96c		branch 'master' of https://github.com/as-cii/foo
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/HEAD b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/HEAD
new file mode 100644
index 000000000..cb089cd89
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/master
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/ORIG_HEAD b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/ORIG_HEAD
new file mode 100644
index 000000000..c190b6b6d
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/ORIG_HEAD
@@ -0,0 +1 @@
+f97fc7338640a493675f375ed2eeaa2451715415
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/config b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/config
new file mode 100644
index 000000000..a8c5ef1cb
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/config
@@ -0,0 +1,13 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
+	precomposeunicode = true
+[remote "origin"]
+	url = https://github.com/as-cii/foo
+	fetch = +refs/heads/*:refs/remotes/origin/*
+[branch "master"]
+	remote = origin
+	merge = refs/heads/master
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/index b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/index
new file mode 100644
index 000000000..8eae4494d
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/index differ
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/info/refs b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/info/refs
new file mode 100644
index 000000000..cd143295b
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/info/refs
@@ -0,0 +1,2 @@
+60a497d3152925c000950e9cd2a874e8314c3155	refs/heads/master
+91c6b2a0a2c0d77bb9ce169154ef4263a3afc96c	refs/remotes/origin/master
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/objects/info/packs b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/objects/info/packs
new file mode 100644
index 000000000..9d76835e9
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/objects/info/packs
@@ -0,0 +1,2 @@
+P pack-ce64fd1ffdacf4364f6162466c9c8df5bca62c8b.pack
+
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/objects/pack/pack-ce64fd1ffdacf4364f6162466c9c8df5bca62c8b.idx b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/objects/pack/pack-ce64fd1ffdacf4364f6162466c9c8df5bca62c8b.idx
new file mode 100644
index 000000000..2a34556b2
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/objects/pack/pack-ce64fd1ffdacf4364f6162466c9c8df5bca62c8b.idx differ
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/objects/pack/pack-ce64fd1ffdacf4364f6162466c9c8df5bca62c8b.pack b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/objects/pack/pack-ce64fd1ffdacf4364f6162466c9c8df5bca62c8b.pack
new file mode 100644
index 000000000..5864e4f18
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/objects/pack/pack-ce64fd1ffdacf4364f6162466c9c8df5bca62c8b.pack differ
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/packed-refs b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/packed-refs
new file mode 100644
index 000000000..9c2be66d4
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/packed-refs
@@ -0,0 +1,3 @@
+# pack-refs with: peeled fully-peeled 
+60a497d3152925c000950e9cd2a874e8314c3155 refs/heads/master
+91c6b2a0a2c0d77bb9ce169154ef4263a3afc96c refs/remotes/origin/master
diff --git a/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/refs/heads/master b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/refs/heads/master
new file mode 100644
index 000000000..a2de5a41d
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/ahead-behind-repo.git/refs/heads/master
@@ -0,0 +1 @@
+60a497d3152925c000950e9cd2a874e8314c3155
diff --git a/packages/status-bar/spec/fixtures/git/master.git/HEAD b/packages/status-bar/spec/fixtures/git/master.git/HEAD
new file mode 100644
index 000000000..cb089cd89
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/master.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/master
diff --git a/packages/status-bar/spec/fixtures/git/master.git/config b/packages/status-bar/spec/fixtures/git/master.git/config
new file mode 100644
index 000000000..af107929f
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/master.git/config
@@ -0,0 +1,6 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
diff --git a/packages/status-bar/spec/fixtures/git/master.git/index b/packages/status-bar/spec/fixtures/git/master.git/index
new file mode 100644
index 000000000..bf35b18cd
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/master.git/index differ
diff --git a/packages/status-bar/spec/fixtures/git/master.git/objects/65/a457425a679cbe9adf0d2741785d3ceabb44a7 b/packages/status-bar/spec/fixtures/git/master.git/objects/65/a457425a679cbe9adf0d2741785d3ceabb44a7
new file mode 100644
index 000000000..ba1f06fc0
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/master.git/objects/65/a457425a679cbe9adf0d2741785d3ceabb44a7 differ
diff --git a/packages/status-bar/spec/fixtures/git/master.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 b/packages/status-bar/spec/fixtures/git/master.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391
new file mode 100644
index 000000000..711223894
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/master.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 differ
diff --git a/packages/status-bar/spec/fixtures/git/master.git/objects/ef/046e9eecaa5255ea5e9817132d4001724d6ae1 b/packages/status-bar/spec/fixtures/git/master.git/objects/ef/046e9eecaa5255ea5e9817132d4001724d6ae1
new file mode 100644
index 000000000..eaf6eeff3
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/master.git/objects/ef/046e9eecaa5255ea5e9817132d4001724d6ae1 differ
diff --git a/packages/status-bar/spec/fixtures/git/master.git/refs/heads/master b/packages/status-bar/spec/fixtures/git/master.git/refs/heads/master
new file mode 100644
index 000000000..6134b5707
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/master.git/refs/heads/master
@@ -0,0 +1 @@
+ef046e9eecaa5255ea5e9817132d4001724d6ae1
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/COMMIT_EDITMSG b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/COMMIT_EDITMSG
new file mode 100644
index 000000000..9823e78d6
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/COMMIT_EDITMSG
@@ -0,0 +1 @@
+Initial Commit
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/HEAD b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/HEAD
new file mode 100644
index 000000000..cb089cd89
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/master
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/ORIG_HEAD b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/ORIG_HEAD
new file mode 100644
index 000000000..f01a95f68
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/ORIG_HEAD
@@ -0,0 +1 @@
+7189962af8559c6396aaad5758a2b0129c155529
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/config b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/config
new file mode 100644
index 000000000..4afc3b25c
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/config
@@ -0,0 +1,14 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
+	precomposeunicode = true
+[branch "master"]
+[remote "origin"]
+	url = https://github.com/as-cii/foo
+	fetch = +refs/heads/*:refs/remotes/origin/*
+[branch "master"]
+	remote = origin
+	merge = refs/heads/master
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/description b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/description
new file mode 100644
index 000000000..498b267a8
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/description
@@ -0,0 +1 @@
+Unnamed repository; edit this file 'description' to name the repository.
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/index b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/index
new file mode 100644
index 000000000..9f57f6cb4
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/index differ
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/info/refs b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/info/refs
new file mode 100644
index 000000000..7358508ea
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/info/refs
@@ -0,0 +1,2 @@
+7189962af8559c6396aaad5758a2b0129c155529	refs/heads/master
+7189962af8559c6396aaad5758a2b0129c155529	refs/remotes/origin/master
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/objects/info/packs b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/objects/info/packs
new file mode 100644
index 000000000..14bd98750
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/objects/info/packs
@@ -0,0 +1,2 @@
+P pack-483aa6a931fd8d7256b902401f1b991daedfe0a5.pack
+
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/objects/pack/pack-483aa6a931fd8d7256b902401f1b991daedfe0a5.idx b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/objects/pack/pack-483aa6a931fd8d7256b902401f1b991daedfe0a5.idx
new file mode 100644
index 000000000..ce06f097b
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/objects/pack/pack-483aa6a931fd8d7256b902401f1b991daedfe0a5.idx differ
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/objects/pack/pack-483aa6a931fd8d7256b902401f1b991daedfe0a5.pack b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/objects/pack/pack-483aa6a931fd8d7256b902401f1b991daedfe0a5.pack
new file mode 100644
index 000000000..c22dd28d2
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/objects/pack/pack-483aa6a931fd8d7256b902401f1b991daedfe0a5.pack differ
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/packed-refs b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/packed-refs
new file mode 100644
index 000000000..5d61d6d6c
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/packed-refs
@@ -0,0 +1,3 @@
+# pack-refs with: peeled fully-peeled 
+7189962af8559c6396aaad5758a2b0129c155529 refs/heads/master
+7189962af8559c6396aaad5758a2b0129c155529 refs/remotes/origin/master
diff --git a/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/refs/heads/master b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/refs/heads/master
new file mode 100644
index 000000000..f01a95f68
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/no-ahead-behind-repo.git/refs/heads/master
@@ -0,0 +1 @@
+7189962af8559c6396aaad5758a2b0129c155529
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/a.txt b/packages/status-bar/spec/fixtures/git/working-dir/a.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/file.txt b/packages/status-bar/spec/fixtures/git/working-dir/file.txt
new file mode 100644
index 000000000..66dc9051d
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/working-dir/file.txt
@@ -0,0 +1 @@
+undefined
\ No newline at end of file
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/git.git/HEAD b/packages/status-bar/spec/fixtures/git/working-dir/git.git/HEAD
new file mode 100644
index 000000000..cb089cd89
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/working-dir/git.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/master
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/git.git/config b/packages/status-bar/spec/fixtures/git/working-dir/git.git/config
new file mode 100644
index 000000000..af107929f
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/working-dir/git.git/config
@@ -0,0 +1,6 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/git.git/index b/packages/status-bar/spec/fixtures/git/working-dir/git.git/index
new file mode 100644
index 000000000..bf35b18cd
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/working-dir/git.git/index differ
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/git.git/objects/65/a457425a679cbe9adf0d2741785d3ceabb44a7 b/packages/status-bar/spec/fixtures/git/working-dir/git.git/objects/65/a457425a679cbe9adf0d2741785d3ceabb44a7
new file mode 100644
index 000000000..ba1f06fc0
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/working-dir/git.git/objects/65/a457425a679cbe9adf0d2741785d3ceabb44a7 differ
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/git.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 b/packages/status-bar/spec/fixtures/git/working-dir/git.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391
new file mode 100644
index 000000000..711223894
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/working-dir/git.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 differ
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/git.git/objects/ef/046e9eecaa5255ea5e9817132d4001724d6ae1 b/packages/status-bar/spec/fixtures/git/working-dir/git.git/objects/ef/046e9eecaa5255ea5e9817132d4001724d6ae1
new file mode 100644
index 000000000..eaf6eeff3
Binary files /dev/null and b/packages/status-bar/spec/fixtures/git/working-dir/git.git/objects/ef/046e9eecaa5255ea5e9817132d4001724d6ae1 differ
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/git.git/refs/heads/master b/packages/status-bar/spec/fixtures/git/working-dir/git.git/refs/heads/master
new file mode 100644
index 000000000..6134b5707
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/working-dir/git.git/refs/heads/master
@@ -0,0 +1 @@
+ef046e9eecaa5255ea5e9817132d4001724d6ae1
diff --git a/packages/status-bar/spec/fixtures/git/working-dir/other.txt b/packages/status-bar/spec/fixtures/git/working-dir/other.txt
new file mode 100644
index 000000000..ffc8218bd
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/git/working-dir/other.txt
@@ -0,0 +1 @@
+Full of text
\ No newline at end of file
diff --git a/packages/status-bar/spec/fixtures/sample.js b/packages/status-bar/spec/fixtures/sample.js
new file mode 100644
index 000000000..fb33b0b43
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/sample.js
@@ -0,0 +1,13 @@
+var quicksort = function () {
+  var sort = function(items) {
+    if (items.length <= 1) return items;
+    var pivot = items.shift(), current, left = [], right = [];
+    while(items.length > 0) {
+      current = items.shift();
+      current < pivot ? left.push(current) : right.push(current);
+    }
+    return sort(left).concat(pivot).concat(sort(right));
+  };
+
+  return sort(Array.apply(this, arguments));
+};
\ No newline at end of file
diff --git a/packages/status-bar/spec/fixtures/sample.txt b/packages/status-bar/spec/fixtures/sample.txt
new file mode 100644
index 000000000..3e715502b
--- /dev/null
+++ b/packages/status-bar/spec/fixtures/sample.txt
@@ -0,0 +1 @@
+Some text.
diff --git a/packages/status-bar/spec/status-bar-spec.coffee b/packages/status-bar/spec/status-bar-spec.coffee
new file mode 100644
index 000000000..dee735834
--- /dev/null
+++ b/packages/status-bar/spec/status-bar-spec.coffee
@@ -0,0 +1,111 @@
+describe "Status Bar package", ->
+  [editor, statusBar, statusBarService, workspaceElement, mainModule] = []
+
+  beforeEach ->
+    workspaceElement = atom.views.getView(atom.workspace)
+
+    waitsForPromise ->
+      atom.packages.activatePackage('status-bar').then (pack) ->
+        statusBar = workspaceElement.querySelector("status-bar")
+        statusBarService = pack.mainModule.provideStatusBar()
+        {mainModule} = pack
+
+  describe "@activate()", ->
+    it "appends only one status bar", ->
+      expect(workspaceElement.querySelectorAll('status-bar').length).toBe 1
+      atom.workspace.getActivePane().splitRight(copyActiveItem: true)
+      expect(workspaceElement.querySelectorAll('status-bar').length).toBe 1
+
+  describe "@deactivate()", ->
+    it "removes the status bar view", ->
+      waitsForPromise ->
+        Promise.resolve(atom.packages.deactivatePackage('status-bar')) # Wrapped so works with Promise & non-Promise deactivate
+      runs ->
+        expect(workspaceElement.querySelector('status-bar')).toBeNull()
+
+  describe "isVisible option", ->
+    beforeEach ->
+      jasmine.attachToDOM(workspaceElement)
+
+    describe "when it is true", ->
+      beforeEach ->
+        atom.config.set 'status-bar.isVisible', true
+
+      it "shows status bar", ->
+        expect(workspaceElement.querySelector('status-bar').parentNode).toBeVisible()
+
+    describe "when it is false", ->
+      beforeEach ->
+        atom.config.set 'status-bar.isVisible', false
+
+      it "hides status bar", ->
+        expect(workspaceElement.querySelector('status-bar').parentNode).not.toBeVisible()
+
+  describe "when status-bar:toggle is triggered", ->
+    beforeEach ->
+      jasmine.attachToDOM(workspaceElement)
+      atom.config.set 'status-bar.isVisible', true
+
+    it "hides or shows the status bar", ->
+      atom.commands.dispatch(workspaceElement, 'status-bar:toggle')
+      expect(workspaceElement.querySelector('status-bar').parentNode).not.toBeVisible()
+      atom.commands.dispatch(workspaceElement, 'status-bar:toggle')
+      expect(workspaceElement.querySelector('status-bar').parentNode).toBeVisible()
+
+    it "toggles the value of isVisible in config file", ->
+      expect(atom.config.get 'status-bar.isVisible').toBe true
+      atom.commands.dispatch(workspaceElement, 'status-bar:toggle')
+      expect(atom.config.get 'status-bar.isVisible').toBe false
+      atom.commands.dispatch(workspaceElement, 'status-bar:toggle')
+      expect(atom.config.get 'status-bar.isVisible').toBe true
+
+  describe "full-width setting", ->
+    [containers] = []
+
+    beforeEach ->
+      containers = atom.workspace.panelContainers
+      jasmine.attachToDOM(workspaceElement)
+
+      waitsForPromise ->
+        atom.workspace.open('sample.js')
+
+    it "expects the setting to be enabled by default", ->
+      expect(atom.config.get('status-bar.fullWidth')).toBeTruthy()
+      expect(containers.footer.panels).toContain(mainModule.statusBarPanel)
+
+    describe "when setting is changed", ->
+      it "fits status bar to editor's width", ->
+        atom.config.set('status-bar.fullWidth', false)
+        expect(containers.bottom.panels).toContain(mainModule.statusBarPanel)
+        expect(containers.footer.panels).not.toContain(mainModule.statusBarPanel)
+
+      it "restores the status-bar location when re-enabling setting", ->
+        atom.config.set('status-bar.fullWidth', true)
+        expect(containers.footer.panels).toContain(mainModule.statusBarPanel)
+        expect(containers.bottom.panels).not.toContain(mainModule.statusBarPanel)
+
+  describe "the 'status-bar' service", ->
+    it "allows tiles to be added, removed, and retrieved", ->
+      dummyView = document.createElement("div")
+      tile = statusBarService.addLeftTile(item: dummyView)
+      expect(statusBar).toContain(dummyView)
+      expect(statusBarService.getLeftTiles()).toContain(tile)
+      tile.destroy()
+      expect(statusBar).not.toContain(dummyView)
+      expect(statusBarService.getLeftTiles()).not.toContain(tile)
+
+      dummyView = document.createElement("div")
+      tile = statusBarService.addRightTile(item: dummyView)
+      expect(statusBar).toContain(dummyView)
+      expect(statusBarService.getRightTiles()).toContain(tile)
+      tile.destroy()
+      expect(statusBar).not.toContain(dummyView)
+      expect(statusBarService.getRightTiles()).not.toContain(tile)
+
+    it "allows the git info tile to be disabled", ->
+      getGitInfoTile = ->
+        statusBar.getRightTiles().find((tile) -> tile.item.matches('.git-view'))
+
+      expect(getGitInfoTile()).not.toBeUndefined()
+      statusBarService.disableGitInfoTile()
+      expect(getGitInfoTile()).toBeUndefined()
diff --git a/packages/status-bar/spec/status-bar-view-spec.coffee b/packages/status-bar/spec/status-bar-view-spec.coffee
new file mode 100644
index 000000000..ae2acd3aa
--- /dev/null
+++ b/packages/status-bar/spec/status-bar-view-spec.coffee
@@ -0,0 +1,103 @@
+StatusBarView = require '../lib/status-bar-view'
+
+describe "StatusBarView", ->
+  statusBarView = null
+
+  class TestItem
+    constructor: (@id) ->
+
+  beforeEach ->
+    statusBarView = new StatusBarView()
+
+    atom.views.addViewProvider TestItem, (model) ->
+      element = document.createElement("item-view")
+      element.model = model
+      element
+
+  describe "::addLeftTile({item, priority})", ->
+    it "appends the view for the given item to its left side", ->
+      testItem1 = new TestItem(1)
+      testItem2 = new TestItem(2)
+      testItem3 = new TestItem(3)
+
+      tile1 = statusBarView.addLeftTile(item: testItem1, priority: 10)
+      tile2 = statusBarView.addLeftTile(item: testItem2, priority: 30)
+      tile3 = statusBarView.addLeftTile(item: testItem3, priority: 20)
+
+      {leftPanel} = statusBarView
+
+      expect(leftPanel.children[0].nodeName).toBe("ITEM-VIEW")
+      expect(leftPanel.children[1].nodeName).toBe("ITEM-VIEW")
+      expect(leftPanel.children[2].nodeName).toBe("ITEM-VIEW")
+
+      expect(leftPanel.children[0].model).toBe(testItem1)
+      expect(leftPanel.children[1].model).toBe(testItem3)
+      expect(leftPanel.children[2].model).toBe(testItem2)
+
+      expect(statusBarView.getLeftTiles()).toEqual([tile1, tile3, tile2])
+      expect(tile1.getPriority()).toBe(10)
+      expect(tile1.getItem()).toBe(testItem1)
+
+    it "allows the view to be removed", ->
+      testItem = new TestItem(1)
+      tile = statusBarView.addLeftTile(item: testItem, priority: 10)
+      tile.destroy()
+      expect(statusBarView.leftPanel.children.length).toBe(0)
+
+      statusBarView.addLeftTile(item: testItem, priority: 9)
+
+    describe "when no priority is given", ->
+      it "appends the item", ->
+        testItem1 = new TestItem(1)
+        testItem2 = new TestItem(2)
+
+        statusBarView.addLeftTile(item: testItem1, priority: 1000)
+        statusBarView.addLeftTile(item: testItem2)
+
+        {leftPanel} = statusBarView
+        expect(leftPanel.children[0].model).toBe(testItem1)
+        expect(leftPanel.children[1].model).toBe(testItem2)
+
+  describe "::addRightTile({item, priority})", ->
+    it "appends the view for the given item to its right side", ->
+      testItem1 = new TestItem(1)
+      testItem2 = new TestItem(2)
+      testItem3 = new TestItem(3)
+
+      tile1 = statusBarView.addRightTile(item: testItem1, priority: 10)
+      tile2 = statusBarView.addRightTile(item: testItem2, priority: 30)
+      tile3 = statusBarView.addRightTile(item: testItem3, priority: 20)
+
+      {rightPanel} = statusBarView
+
+      expect(rightPanel.children[0].nodeName).toBe("ITEM-VIEW")
+      expect(rightPanel.children[1].nodeName).toBe("ITEM-VIEW")
+      expect(rightPanel.children[2].nodeName).toBe("ITEM-VIEW")
+
+      expect(rightPanel.children[0].model).toBe(testItem2)
+      expect(rightPanel.children[1].model).toBe(testItem3)
+      expect(rightPanel.children[2].model).toBe(testItem1)
+
+      expect(statusBarView.getRightTiles()).toEqual([tile2, tile3, tile1])
+      expect(tile1.getPriority()).toBe(10)
+      expect(tile1.getItem()).toBe(testItem1)
+
+    it "allows the view to be removed", ->
+      testItem = new TestItem(1)
+      disposable = statusBarView.addRightTile(item: testItem, priority: 10)
+      disposable.destroy()
+      expect(statusBarView.rightPanel.children.length).toBe(0)
+
+      statusBarView.addRightTile(item: testItem, priority: 11)
+
+    describe "when no priority is given", ->
+      it "prepends the item", ->
+        testItem1 = new TestItem(1, priority: 1000)
+        testItem2 = new TestItem(2)
+
+        statusBarView.addRightTile(item: testItem1, priority: 1000)
+        statusBarView.addRightTile(item: testItem2)
+
+        {rightPanel} = statusBarView
+        expect(rightPanel.children[0].model).toBe(testItem2)
+        expect(rightPanel.children[1].model).toBe(testItem1)
diff --git a/packages/status-bar/styles/status-bar.less b/packages/status-bar/styles/status-bar.less
new file mode 100644
index 000000000..61d7e9ddd
--- /dev/null
+++ b/packages/status-bar/styles/status-bar.less
@@ -0,0 +1,114 @@
+@import "ui-variables";
+@import "octicon-mixins";
+
+status-bar {
+  display: block;
+  font-size: 11px;
+  line-height: @component-line-height - 3px;
+  height: @component-line-height + 1px;
+  position: relative;
+  -webkit-user-select: none;
+  cursor: default;
+  overflow: hidden;
+  white-space: nowrap;
+  min-width: -webkit-min-content;
+
+  a, a:hover {
+    color: @text-color;
+  }
+
+  .flexbox-repaint-hack {
+    padding: 0 @component-line-height/2;
+    position: absolute;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    left: 0;
+    display: flex;
+    justify-content: space-between;
+  }
+
+  // Use 1/3 of space -> will get cut-off first when narrow
+  .status-bar-left {
+    flex: 1 1 33%;
+  }
+
+  // Use 2/3 of space
+  .status-bar-right {
+    padding-left: @component-padding;
+    .inline-block {
+      margin-right: 0;
+      margin-left: @component-padding*1.5;
+      & > .inline-block {
+        margin-left: 0;
+      }
+    }
+  }
+
+  // Add horizontal overflow scrolling
+  .status-bar-left,
+  .status-bar-right {
+    overflow-x: auto;
+    // prevent badly behaved status bar items from causing vertical scrolling
+    // in the status bar. They can always implement overflow: auto to scroll
+    // within themselves.
+    overflow-y: hidden;
+    &::-webkit-scrollbar {
+      display: none;
+    }
+  }
+
+  // Limit inline-blocks from getting too long
+  .inline-block {
+    max-width: 20vw;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  // remove padding from buttons
+  button.inline-block {
+    padding-left: 0;
+    padding-right: 0;
+  }
+
+  // No width limit for file-info -> will get cut off if too long
+  .inline-block.file-info {
+    max-width: none;
+  }
+
+  .file-info.buffer-modified::after {
+    content: '*';
+  }
+
+  // All icons are smaller than normal (normal is 16px)
+  .icon:before {
+    .icon-size(14px);
+    position: relative;
+    top: 1px;
+    width: auto; // Enable auto-width since not every icon has the same width
+    margin-right: 4px;
+  }
+
+  .icon-diff-ignored:before,
+  .commits-ahead-label:before,
+  .commits-behind-label:before {
+    margin-right: -1px;
+  }
+
+  .hide,
+  .current-path:empty,
+  .cursor-position:empty,
+  .selection-count:empty {
+    display: none;
+  }
+
+  .git-view {
+    display: inline-block;
+  }
+
+  .cursor-position a,
+  .cursor-position a:hover {
+    color: @text-color;
+  }
+}
diff --git a/packages/styleguide/.gitignore b/packages/styleguide/.gitignore
new file mode 100644
index 000000000..3c3629e64
--- /dev/null
+++ b/packages/styleguide/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/packages/styleguide/README.md b/packages/styleguide/README.md
new file mode 100644
index 000000000..7ae65ec34
--- /dev/null
+++ b/packages/styleguide/README.md
@@ -0,0 +1,8 @@
+# Styleguide package
+
+Styleguide will show you all the UI components used in Pulsar. It is useful as a reference when developing themes and packages.
+
+* <kbd>cmd-ctrl-shift-g</kbd> (macOS) and <kbd>ctrl-shift-g</kbd> (Windows and Linux) opens it in a new tab
+* You can click on the section headings to expand/collapse them
+
+![Demo](https://cloud.githubusercontent.com/assets/378023/15767543/ccecf9bc-2983-11e6-9c5e-d228d39f52b0.png)
diff --git a/packages/styleguide/keymaps/styleguide.cson b/packages/styleguide/keymaps/styleguide.cson
new file mode 100644
index 000000000..bc48b6d1a
--- /dev/null
+++ b/packages/styleguide/keymaps/styleguide.cson
@@ -0,0 +1,5 @@
+'.platform-darwin':
+  'cmd-ctrl-G': 'styleguide:show'
+
+'.platform-win32, .platform-linux':
+  'ctrl-G': 'styleguide:show'
diff --git a/packages/styleguide/lib/code-block.js b/packages/styleguide/lib/code-block.js
new file mode 100644
index 000000000..02eaf0654
--- /dev/null
+++ b/packages/styleguide/lib/code-block.js
@@ -0,0 +1,17 @@
+const {TextEditor} = require('atom')
+
+module.exports =
+class CodeBlock {
+  constructor (props) {
+    this.editor = new TextEditor({readonly: true, keyboardInputEnabled: false})
+    this.element = document.createElement('div')
+    this.element.appendChild(this.editor.getElement())
+    atom.grammars.assignLanguageMode(this.editor, props.grammarScopeName)
+    this.update(props)
+  }
+
+  update ({cssClass, code}) {
+    this.editor.setText(code)
+    this.element.classList.add(cssClass)
+  }
+}
diff --git a/packages/styleguide/lib/example-select-list-view.js b/packages/styleguide/lib/example-select-list-view.js
new file mode 100644
index 000000000..1454251ea
--- /dev/null
+++ b/packages/styleguide/lib/example-select-list-view.js
@@ -0,0 +1,68 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import SelectListView from 'atom-select-list'
+import etch from 'etch'
+import dedent from 'dedent'
+import CodeBlock from './code-block'
+
+export default class ExampleSelectListView {
+  constructor () {
+    this.jsExampleCode = dedent`
+    import SelectListView from 'atom-select-list'
+
+    const selectListView = new SelectListView({
+      items: ['one', 'two', 'three'],
+      elementForItem: (item) => {
+        const li = document.createElement('li')
+        li.textContent = item
+        return li
+      },
+      didConfirmSelection: (item) => {
+        console.log('confirmed', item)
+      },
+      didCancelSelection: () => {
+        console.log('cancelled')
+      }
+    })
+    `
+    etch.initialize(this)
+  }
+
+  elementForItem (item) {
+    const li = document.createElement('li')
+    li.textContent = item
+    return li
+  }
+
+  didConfirmSelection (item) {
+    console.log('confirmed', item)
+  }
+
+  didCancelSelection () {
+    console.log('cancelled')
+  }
+
+  render () {
+    return (
+      <div className='example'>
+        <div className='example-rendered'>
+          <atom-panel className='modal'>
+            <SelectListView
+              items={['one', 'two', 'three']}
+              elementForItem={this.elementForItem.bind(this)}
+              onDidConfirmSelection={this.didConfirmSelection.bind(this)}
+              onDidCancelSelection={this.didCancelSelection.bind(this)} />
+          </atom-panel>
+        </div>
+        <div className='example-code show-example-space-pen'>
+          <CodeBlock cssClass='example-space-pen' grammarScopeName='source.js' code={this.jsExampleCode} />
+        </div>
+      </div>
+    )
+  }
+
+  update () {
+
+  }
+}
diff --git a/packages/styleguide/lib/styleguide-section.js b/packages/styleguide/lib/styleguide-section.js
new file mode 100644
index 000000000..afd49e6b8
--- /dev/null
+++ b/packages/styleguide/lib/styleguide-section.js
@@ -0,0 +1,73 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import etch from 'etch'
+
+export default class StyleguideSection {
+  constructor (props, children) {
+    this.collapsed = props.collapsed
+    this.title = props.title
+    this.name = props.name
+    this.children = children
+    etch.initialize(this)
+    if (props.onDidInitialize) {
+      props.onDidInitialize(this)
+    }
+  }
+
+  render () {
+    if (this.loaded) {
+      let className = 'bordered'
+      if (this.collapsed) {
+        className += ' collapsed'
+      }
+      return (
+        <section className={className} dataset={{name: this.name}}>
+          <h1 className='section-heading' onclick={() => this.toggle()}>{this.title}</h1>
+          {this.children}
+        </section>
+      )
+    } else {
+      return (
+        <section className='bordered collapsed' dataset={{name: this.name}}>
+          <h1 className='section-heading' onclick={() => this.toggle()}>{this.title}</h1>
+        </section>
+      )
+    }
+  }
+
+  update (props, children) {
+    if (props.title) {
+      this.title = props.title
+    }
+
+    if (props.name) {
+      this.name = props.name
+    }
+
+    if (children) {
+      this.children = children
+    }
+
+    if (props.didExpandOrCollapseSection) {
+      this.didExpandOrCollapseSection = props.onDidExpandOrCollapseSection
+    }
+
+    return etch.update(this)
+  }
+
+  toggle () {
+    return this.collapsed ? this.expand() : this.collapse()
+  }
+
+  expand () {
+    this.collapsed = false
+    this.loaded = true
+    return etch.update(this)
+  }
+
+  collapse () {
+    this.collapsed = true
+    return etch.update(this)
+  }
+}
diff --git a/packages/styleguide/lib/styleguide-view.js b/packages/styleguide/lib/styleguide-view.js
new file mode 100644
index 000000000..ad0a326a7
--- /dev/null
+++ b/packages/styleguide/lib/styleguide-view.js
@@ -0,0 +1,1266 @@
+/** @babel */
+/** @jsx etch.dom */
+
+import etch from 'etch'
+import dedent from 'dedent'
+import CodeBlock from './code-block'
+import StyleguideSection from './styleguide-section'
+import ExampleSelectListView from './example-select-list-view'
+
+export default class StyleguideView {
+  constructor (props) {
+    this.uri = props.uri
+    this.collapsedSections = props.collapsedSections ? new Set(props.collapsedSections) : new Set()
+    this.sections = []
+    etch.initialize(this)
+    for (const section of this.sections) {
+      if (this.collapsedSections.has(section.name)) {
+        section.collapse()
+      } else {
+        section.expand()
+      }
+    }
+  }
+
+  destroy () {
+    this.sections = null
+  }
+
+  serialize () {
+    return {
+      deserializer: this.constructor.name,
+      collapsedSections: this.sections.filter((s) => s.collapsed).map((s) => s.name),
+      uri: this.uri
+    }
+  }
+
+  update () {
+    // intentionally empty.
+  }
+
+  getURI () {
+    return this.uri
+  }
+
+  getTitle () {
+    return 'Styleguide'
+  }
+
+  getIconName () {
+    return 'paintcan'
+  }
+
+  expandAll () {
+    for (const section of this.sections) {
+      section.expand()
+    }
+  }
+
+  collapseAll () {
+    for (const section of this.sections) {
+      section.collapse()
+    }
+  }
+
+  render () {
+    return (
+      <div className='styleguide pane-item native-key-bindings' tabIndex='-1'>
+        <header className='styleguide-header'>
+          <h1>Styleguide</h1>
+          <p>This exercises all UI components and acts as a styleguide.</p>
+
+          <div className='styleguide-controls btn-group'>
+            <button className='btn' onclick={() => this.collapseAll()}>Collapse All</button>
+            <button className='btn' onclick={() => this.expandAll()}>Expand All</button>
+          </div>
+        </header>
+
+        <main className='styleguide-sections'>
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='variables' title='Variables'>
+            <p>Use these UI variables in your package's stylesheets. They are set by UI themes and therefore your package will match the overall look. Make sure to @import 'ui-variables' in your stylesheets to use these variables.</p>
+            <h2>Text colors</h2>
+            {this.renderExampleHTML(dedent`
+              <div class="is-color text-color">@text-color</div>
+              <div class="is-color text-color-subtle">@text-color-subtle</div>
+              <div class="is-color text-color-highlight">@text-color-highlight</div>
+              <div class="is-color text-color-selected">@text-color-selected</div>
+              <div class="is-color"></div>
+              <div class="is-color text-color-info">@text-color-info</div>
+              <div class="is-color text-color-success">@text-color-success</div>
+              <div class="is-color text-color-warning">@text-color-warning</div>
+              <div class="is-color text-color-error">@text-color-error</div>
+            `)}
+
+            <h2>Background colors</h2>
+            {this.renderExampleHTML(dedent`
+              <div class="is-color background-color-info">@background-color-info</div>
+              <div class="is-color background-color-success">@background-color-success</div>
+              <div class="is-color background-color-warning">@background-color-warning</div>
+              <div class="is-color background-color-error">@background-color-error</div>
+              <div class="is-color"></div>
+              <div class="is-color background-color-highlight">@background-color-highlight</div>
+              <div class="is-color background-color-selected">@background-color-selected</div>
+              <div class="is-color app-background-color">@app-background-color</div>
+            `)}
+
+            <h2>Base colors</h2>
+            {this.renderExampleHTML(dedent`
+              <div class="is-color base-background-color">@base-background-color</div>
+              <div class="is-color base-border-color">@base-border-color</div>
+            `)}
+
+            <h2>Component colors</h2>
+            {this.renderExampleHTML(dedent`
+              <div class="is-color pane-item-background-color">@pane-item-background-color</div>
+              <div class="is-color pane-item-border-color">@pane-item-border-color</div>
+              <div class="is-color"></div>
+              <div class="is-color input-background-color">@input-background-color</div>
+              <div class="is-color input-border-color">@input-border-color</div>
+              <div class="is-color"></div>
+              <div class="is-color tool-panel-background-color">@tool-panel-background-color</div>
+              <div class="is-color tool-panel-border-color">@tool-panel-border-color</div>
+              <div class="is-color inset-panel-background-color">@inset-panel-background-color</div>
+              <div class="is-color inset-panel-border-color">@inset-panel-border-color</div>
+              <div class="is-color panel-heading-background-color">@panel-heading-background-color</div>
+              <div class="is-color panel-heading-border-color">@panel-heading-border-color</div>
+              <div class="is-color overlay-background-color">@overlay-background-color</div>
+              <div class="is-color overlay-border-color">@overlay-border-color</div>
+              <div class="is-color"></div>
+              <div class="is-color button-background-color">@button-background-color</div>
+              <div class="is-color button-background-color-hover">@button-background-color-hover</div>
+              <div class="is-color button-background-color-selected">@button-background-color-selected</div>
+              <div class="is-color button-border-color">@button-border-color</div>
+              <div class="color"></div>
+              <div class="is-color tab-bar-background-color">@tab-bar-background-color</div>
+              <div class="is-color tab-bar-border-color">@tab-bar-border-color</div>
+              <div class="is-color tab-background-color">@tab-background-color</div>
+              <div class="is-color tab-background-color-active">@tab-background-color-active</div>
+              <div class="is-color tab-border-color">@tab-border-color</div>
+              <div class="is-color"></div>
+              <div class="is-color tree-view-background-color">@tree-view-background-color</div>
+              <div class="is-color tree-view-border-color">@tree-view-border-color</div>
+            `)}
+
+            <h2>Site colors</h2>
+            {this.renderExampleHTML(dedent`
+              <div class="is-color ui-site-color-1">@ui-site-color-1</div>
+              <div class="is-color ui-site-color-2">@ui-site-color-2</div>
+              <div class="is-color ui-site-color-3">@ui-site-color-3</div>
+              <div class="is-color ui-site-color-4">@ui-site-color-4</div>
+              <div class="is-color ui-site-color-5">@ui-site-color-5</div>
+            `)}
+
+            <h2>Sizes</h2>
+            {this.renderExampleHTML(dedent`
+              <div class="is-size disclosure-arrow-size">@disclosure-arrow-size</div>
+              <div class="is-size component-padding">@component-padding</div>
+              <div class="is-size component-icon-padding">@component-icon-padding</div>
+              <div class="is-size component-icon-size">@component-icon-size</div>
+              <div class="is-size component-line-height">@component-line-height</div>
+              <div class="is-size tab-height">@tab-height</div>
+              <div class="is-size font-size">@font-size</div>
+            `)}
+
+            <h2>Misc</h2>
+            {this.renderExampleHTML(dedent`
+              <div class="is-radius component-border-radius">@component-border-radius</div>
+              <div class="is-font font-family">@font-family</div>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='icons' title='Icons'>
+            <p>Atom comes bundled with the Octicons. It lets you easily add icons to your packages.</p>
+            <p>Currently version <code>4.4.0</code> is available. In addition some older icons from version <code>2.1.2</code> are still kept for backwards compatibility. Make sure to use the <code>icon icon-</code> prefix in front of an icon name. See the <a href='http://flight-manual.atom.io/hacking-atom/sections/iconography/'>documentation</a> for more details.</p>
+
+            <h2>Octicons</h2>
+            {this.renderExampleHTML(dedent`
+              <span class='icon icon-alert native-key-bindings'>alert</span>
+              <span class='icon icon-alignment-align'>alignment-align</span>
+              <span class='icon icon-alignment-aligned-to'>alignment-aligned-to</span>
+              <span class='icon icon-alignment-unalign'>alignment-unalign</span>
+              <span class='icon icon-arrow-down'>arrow-down</span>
+              <span class='icon icon-arrow-left'>arrow-left</span>
+              <span class='icon icon-arrow-right'>arrow-right</span>
+              <span class='icon icon-arrow-small-down'>arrow-small-down</span>
+              <span class='icon icon-arrow-small-left'>arrow-small-left</span>
+              <span class='icon icon-arrow-small-right'>arrow-small-right</span>
+              <span class='icon icon-arrow-small-up'>arrow-small-up</span>
+              <span class='icon icon-arrow-up'>arrow-up</span>
+              <span class='icon icon-beaker'>beaker</span>
+              <span class='icon icon-beer'>beer</span>
+              <span class='icon icon-bell'>bell</span>
+              <span class='icon icon-bold'>bold</span>
+              <span class='icon icon-book'>book</span>
+              <span class='icon icon-bookmark'>bookmark</span>
+              <span class='icon icon-briefcase'>briefcase</span>
+              <span class='icon icon-broadcast'>broadcast</span>
+              <span class='icon icon-browser'>browser</span>
+              <span class='icon icon-bug'>bug</span>
+              <span class='icon icon-calendar'>calendar</span>
+              <span class='icon icon-check'>check</span>
+              <span class='icon icon-checklist'>checklist</span>
+              <span class='icon icon-chevron-down'>chevron-down</span>
+              <span class='icon icon-chevron-left'>chevron-left</span>
+              <span class='icon icon-chevron-right'>chevron-right</span>
+              <span class='icon icon-chevron-up'>chevron-up</span>
+              <span class='icon icon-circle-slash'>circle-slash</span>
+              <span class='icon icon-circuit-board'>circuit-board</span>
+              <span class='icon icon-clippy'>clippy</span>
+              <span class='icon icon-clock'>clock</span>
+              <span class='icon icon-cloud-download'>cloud-download</span>
+              <span class='icon icon-cloud-upload'>cloud-upload</span>
+              <span class='icon icon-code'>code</span>
+              <span class='icon icon-color-mode'>color-mode</span>
+              <span class='icon icon-comment'>comment</span>
+              <span class='icon icon-comment-add'>comment-add</span>
+              <span class='icon icon-comment-discussion'>comment-discussion</span>
+              <span class='icon icon-credit-card'>credit-card</span>
+              <span class='icon icon-dash'>dash</span>
+              <span class='icon icon-dashboard'>dashboard</span>
+              <span class='icon icon-database'>database</span>
+              <span class='icon icon-desktop-download'>desktop-download</span>
+              <span class='icon icon-device-camera'>device-camera</span>
+              <span class='icon icon-device-camera-video'>device-camera-video</span>
+              <span class='icon icon-device-desktop'>device-desktop</span>
+              <span class='icon icon-device-mobile'>device-mobile</span>
+              <span class='icon icon-diff'>diff</span>
+              <span class='icon icon-diff-added'>diff-added</span>
+              <span class='icon icon-diff-ignored'>diff-ignored</span>
+              <span class='icon icon-diff-modified'>diff-modified</span>
+              <span class='icon icon-diff-removed'>diff-removed</span>
+              <span class='icon icon-diff-renamed'>diff-renamed</span>
+              <span class='icon icon-ellipses'>ellipses</span>
+              <span class='icon icon-ellipsis'>ellipsis</span>
+              <span class='icon icon-eye'>eye</span>
+              <span class='icon icon-eye-unwatch'>eye-unwatch</span>
+              <span class='icon icon-eye-watch'>eye-watch</span>
+              <span class='icon icon-file'>file</span>
+              <span class='icon icon-file-add'>file-add</span>
+              <span class='icon icon-file-binary'>file-binary</span>
+              <span class='icon icon-file-code'>file-code</span>
+              <span class='icon icon-file-directory'>file-directory</span>
+              <span class='icon icon-file-directory-create'>file-directory-create</span>
+              <span class='icon icon-file-media'>file-media</span>
+              <span class='icon icon-file-pdf'>file-pdf</span>
+              <span class='icon icon-file-submodule'>file-submodule</span>
+              <span class='icon icon-file-symlink-directory'>file-symlink-directory</span>
+              <span class='icon icon-file-symlink-file'>file-symlink-file</span>
+              <span class='icon icon-file-text'>file-text</span>
+              <span class='icon icon-file-zip'>file-zip</span>
+              <span class='icon icon-flame'>flame</span>
+              <span class='icon icon-fold'>fold</span>
+              <span class='icon icon-gear'>gear</span>
+              <span class='icon icon-gift'>gift</span>
+              <span class='icon icon-gist'>gist</span>
+              <span class='icon icon-gist-fork'>gist-fork</span>
+              <span class='icon icon-gist-new'>gist-new</span>
+              <span class='icon icon-gist-private'>gist-private</span>
+              <span class='icon icon-gist-secret'>gist-secret</span>
+              <span class='icon icon-git-branch'>git-branch</span>
+              <span class='icon icon-git-branch-create'>git-branch-create</span>
+              <span class='icon icon-git-branch-delete'>git-branch-delete</span>
+              <span class='icon icon-git-commit'>git-commit</span>
+              <span class='icon icon-git-compare'>git-compare</span>
+              <span class='icon icon-git-fork-private'>git-fork-private</span>
+              <span class='icon icon-git-merge'>git-merge</span>
+              <span class='icon icon-git-pull-request'>git-pull-request</span>
+              <span class='icon icon-git-pull-request-abandoned'>git-pull-request-abandoned</span>
+              <span class='icon icon-globe'>globe</span>
+              <span class='icon icon-grabber'>grabber</span>
+              <span class='icon icon-graph'>graph</span>
+              <span class='icon icon-heart'>heart</span>
+              <span class='icon icon-history'>history</span>
+              <span class='icon icon-home'>home</span>
+              <span class='icon icon-horizontal-rule'>horizontal-rule</span>
+              <span class='icon icon-hourglass'>hourglass</span>
+              <span class='icon icon-hubot'>hubot</span>
+              <span class='icon icon-inbox'>inbox</span>
+              <span class='icon icon-info'>info</span>
+              <span class='icon icon-issue-closed'>issue-closed</span>
+              <span class='icon icon-issue-opened'>issue-opened</span>
+              <span class='icon icon-issue-reopened'>issue-reopened</span>
+              <span class='icon icon-italic'>italic</span>
+              <span class='icon icon-jersey'>jersey</span>
+              <span class='icon icon-jump-down'>jump-down</span>
+              <span class='icon icon-jump-left'>jump-left</span>
+              <span class='icon icon-jump-right'>jump-right</span>
+              <span class='icon icon-jump-up'>jump-up</span>
+              <span class='icon icon-key'>key</span>
+              <span class='icon icon-keyboard'>keyboard</span>
+              <span class='icon icon-law'>law</span>
+              <span class='icon icon-light-bulb'>light-bulb</span>
+              <span class='icon icon-link'>link</span>
+              <span class='icon icon-link-external'>link-external</span>
+              <span class='icon icon-list-ordered'>list-ordered</span>
+              <span class='icon icon-list-unordered'>list-unordered</span>
+              <span class='icon icon-location'>location</span>
+              <span class='icon icon-lock'>lock</span>
+              <span class='icon icon-log-in'>log-in</span>
+              <span class='icon icon-log-out'>log-out</span>
+              <span class='icon icon-logo-gist'>logo-gist</span>
+              <span class='icon icon-logo-github'>logo-github</span>
+              <span class='icon icon-mail'>mail</span>
+              <span class='icon icon-mail-read'>mail-read</span>
+              <span class='icon icon-mail-reply'>mail-reply</span>
+              <span class='icon icon-mark-github'>mark-github</span>
+              <span class='icon icon-markdown'>markdown</span>
+              <span class='icon icon-megaphone'>megaphone</span>
+              <span class='icon icon-mention'>mention</span>
+              <span class='icon icon-microscope'>microscope</span>
+              <span class='icon icon-milestone'>milestone</span>
+              <span class='icon icon-mirror'>mirror</span>
+              <span class='icon icon-mirror-private'>mirror-private</span>
+              <span class='icon icon-mirror-public'>mirror-public</span>
+              <span class='icon icon-mortar-board'>mortar-board</span>
+              <span class='icon icon-move-down'>move-down</span>
+              <span class='icon icon-move-left'>move-left</span>
+              <span class='icon icon-move-right'>move-right</span>
+              <span class='icon icon-move-up'>move-up</span>
+              <span class='icon icon-mute'>mute</span>
+              <span class='icon icon-no-newline'>no-newline</span>
+              <span class='icon icon-octoface'>octoface</span>
+              <span class='icon icon-organization'>organization</span>
+              <span class='icon icon-package'>package</span>
+              <span class='icon icon-paintcan'>paintcan</span>
+              <span class='icon icon-pencil'>pencil</span>
+              <span class='icon icon-person'>person</span>
+              <span class='icon icon-person-add'>person-add</span>
+              <span class='icon icon-person-follow'>person-follow</span>
+              <span class='icon icon-pin'>pin</span>
+              <span class='icon icon-playback-fast-forward'>playback-fast-forward</span>
+              <span class='icon icon-playback-pause'>playback-pause</span>
+              <span class='icon icon-playback-play'>playback-play</span>
+              <span class='icon icon-playback-rewind'>playback-rewind</span>
+              <span class='icon icon-plug'>plug</span>
+              <span class='icon icon-plus-small'>plus-small</span>
+              <span class='icon icon-plus'>plus</span>
+              <span class='icon icon-podium'>podium</span>
+              <span class='icon icon-primitive-dot'>primitive-dot</span>
+              <span class='icon icon-primitive-square'>primitive-square</span>
+              <span class='icon icon-pulse'>pulse</span>
+              <span class='icon icon-puzzle'>puzzle</span>
+              <span class='icon icon-question'>question</span>
+              <span class='icon icon-quote'>quote</span>
+              <span class='icon icon-radio-tower'>radio-tower</span>
+              <span class='icon icon-remove-close'>remove-close</span>
+              <span class='icon icon-reply'>reply</span>
+              <span class='icon icon-repo'>repo</span>
+              <span class='icon icon-repo-clone'>repo-clone</span>
+              <span class='icon icon-repo-create'>repo-create</span>
+              <span class='icon icon-repo-delete'>repo-delete</span>
+              <span class='icon icon-repo-force-push'>repo-force-push</span>
+              <span class='icon icon-repo-forked'>repo-forked</span>
+              <span class='icon icon-repo-pull'>repo-pull</span>
+              <span class='icon icon-repo-push'>repo-push</span>
+              <span class='icon icon-repo-sync'>repo-sync</span>
+              <span class='icon icon-rocket'>rocket</span>
+              <span class='icon icon-rss'>rss</span>
+              <span class='icon icon-ruby'>ruby</span>
+              <span class='icon icon-screen-full'>screen-full</span>
+              <span class='icon icon-screen-normal'>screen-normal</span>
+              <span class='icon icon-search'>search</span>
+              <span class='icon icon-search-save'>search-save</span>
+              <span class='icon icon-server'>server</span>
+              <span class='icon icon-settings'>settings</span>
+              <span class='icon icon-shield'>shield</span>
+              <span class='icon icon-sign-in'>sign-in</span>
+              <span class='icon icon-sign-out'>sign-out</span>
+              <span class='icon icon-smiley'>smiley</span>
+              <span class='icon icon-split'>split</span>
+              <span class='icon icon-squirrel'>squirrel</span>
+              <span class='icon icon-star'>star</span>
+              <span class='icon icon-star-add'>star-add</span>
+              <span class='icon icon-star-delete'>star-delete</span>
+              <span class='icon icon-steps'>steps</span>
+              <span class='icon icon-stop'>stop</span>
+              <span class='icon icon-sync'>sync</span>
+              <span class='icon icon-tag'>tag</span>
+              <span class='icon icon-tag-add'>tag-add</span>
+              <span class='icon icon-tag-remove'>tag-remove</span>
+              <span class='icon icon-tasklist'>tasklist</span>
+              <span class='icon icon-telescope'>telescope</span>
+              <span class='icon icon-terminal'>terminal</span>
+              <span class='icon icon-text-size'>text-size</span>
+              <span class='icon icon-three-bars'>three-bars</span>
+              <span class='icon icon-thumbsdown'>thumbsdown</span>
+              <span class='icon icon-thumbsup'>thumbsup</span>
+              <span class='icon icon-tools'>tools</span>
+              <span class='icon icon-trashcan'>trashcan</span>
+              <span class='icon icon-triangle-down'>triangle-down</span>
+              <span class='icon icon-triangle-left'>triangle-left</span>
+              <span class='icon icon-triangle-right'>triangle-right</span>
+              <span class='icon icon-triangle-up'>triangle-up</span>
+              <span class='icon icon-unfold'>unfold</span>
+              <span class='icon icon-unmute'>unmute</span>
+              <span class='icon icon-unverified'>unverified</span>
+              <span class='icon icon-verified'>verified</span>
+              <span class='icon icon-versions'>versions</span>
+              <span class='icon icon-watch'>watch</span>
+              <span class='icon icon-x'>x</span>
+              <span class='icon icon-zap'>zap</span>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='inputs' title='Inputs'>
+            <p>Various inputs and controls.</p>
+
+            <h2>Text Inputs</h2>
+            {this.renderExampleHTML(dedent`
+              <input class='input-text' type='text' placeholder='Text'>
+              <input class='input-search' type='search' placeholder='Search'>
+              <textarea class='input-textarea' placeholder='Text Area'></textarea>
+            `)}
+
+            <h2>Controls</h2>
+            {this.renderExampleHTML(dedent`
+              <label class='input-label'><input class='input-radio' type='radio' name='radio'> Radio</label>
+              <label class='input-label'><input class='input-radio' type='radio' name='radio' checked> Radio</label>
+              <label class='input-label'><input class='input-checkbox' type='checkbox' checked> Checkbox</label>
+              <label class='input-label'><input class='input-toggle' type='checkbox' checked> Toggle</label>
+              <input class='input-range' type='range'>
+            `)}
+
+            <h2>Misc</h2>
+            {this.renderExampleHTML(dedent`
+              <input class='input-color' type='color' value='#FF85FF'>
+              <input class='input-number' type='number' min='1' max='10' placeholder='1-10'>
+              <select class='input-select'><option>Option 1</option><option>Option 2</option><option>Option 3</option></select>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='text' title='Text'>
+            <p>There are a number of text classes.</p>
+
+            <h2>text-* classes</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='text-smaller'>Smaller text</div>
+              <div>Normal text</div>
+              <div class='text-subtle'>Subtle text</div>
+              <div class='text-highlight'>Highlighted text</div>
+              <div class='text-info'>Info text</div>
+              <div class='text-success'>Success text</div>
+              <div class='text-warning'>Warning text</div>
+              <div class='text-error'>Error text</div>
+            `)}
+
+            <h2>highlight-* classes</h2>
+            {this.renderExampleHTML(dedent`
+              <span class='inline-block'>Normal</span>
+              <span class='inline-block highlight'>Highlighted</span>
+              <span class='inline-block highlight-info'>Info</span>
+              <span class='inline-block highlight-success'>Success</span>
+              <span class='inline-block highlight-warning'>Warning</span>
+              <span class='inline-block highlight-error'>Error</span>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='layout' title='Layout'>
+            <p>A few things that might be useful for general layout.</p>
+
+            <h2>.block</h2>
+            <p>Sometimes you need to separate components vertically. Say in a form.</p>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <label>You might want to type something here.</label>
+                <atom-text-editor mini>Something you typed...</atom-text-editor>
+              </div>
+              <div class='block'>
+                <label class='icon icon-file-directory'>Another field with an icon</label>
+                <atom-text-editor mini>Something else you typed...</atom-text-editor>
+              </div>
+              <div class='block'>
+                <button class='btn'>Do it</button>
+              </div>
+            `)}
+
+            <h2>.inline-block</h2>
+            <p>Sometimes you need to separate components horizontally.</p>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <button class='inline-block btn'>Do it</button>
+                <button class='inline-block btn'>Another</button>
+                <button class='inline-block btn'>OMG again</button>
+              </div>
+            `)}
+
+            <h2>.inline-block-tight</h2>
+            <p>You might want things to be a little closer to each other.</p>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <button class='inline-block-tight btn'>Do it</button>
+                <button class='inline-block-tight btn'>Another</button>
+                <button class='inline-block-tight btn'>OMG again</button>
+              </div>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='git' title='Git Status'>
+            <p>Often we need git related classes to specify status.</p>
+
+            <h2>status-* classes</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='status-ignored'>Ignored</div>
+              <div class='status-added'>Added</div>
+              <div class='status-modified'>Modified</div>
+              <div class='status-removed'>Removed</div>
+              <div class='status-renamed'>Renamed</div>
+            `)}
+
+            <h2>status-* classes with related icons</h2>
+            {this.renderExampleHTML(dedent`
+              <span class='inline-block status-ignored icon icon-diff-ignored'></span>
+              <span class='inline-block status-added icon icon-diff-added'></span>
+              <span class='inline-block status-modified icon icon-diff-modified'></span>
+              <span class='inline-block status-removed icon icon-diff-removed'></span>
+              <span class='inline-block status-renamed icon icon-diff-renamed'></span>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='site-highlight' title='Site colors'>
+            <p>Site colors are used for collaboration. A site is another collaborator.</p>
+
+            <h2>ui-site-* classes</h2>
+            <p>
+              These classes only set the background color, no other styles.
+              You can also use LESS variables <code>@ui-site-#</code> in your plugins where
+              <code>#</code> is a number between 1 and 5.
+            </p>
+            <p>Site colors will always be in the color progression you see here.</p>
+            {this.renderExampleHTML(dedent`
+              <div class='block ui-site-1'></div>
+              <div class='block ui-site-2'></div>
+              <div class='block ui-site-3'></div>
+              <div class='block ui-site-4'></div>
+              <div class='block ui-site-5'></div>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='badges' title='Badges'>
+            <p>Badges are typically used to show numbers.</p>
+
+            <h2>Standalone badges</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <span class='badge'>0</span>
+                <span class='badge'>8</span>
+                <span class='badge'>27</span>
+                <span class='badge'>450</span>
+                <span class='badge'>2869</span>
+              </div>
+            `)}
+
+            <h2>Colored badges</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <span class='badge badge-info'>78</span>
+                <span class='badge badge-success'>3</span>
+                <span class='badge badge-warning'>14</span>
+                <span class='badge badge-error'>1845</span>
+              </div>
+            `)}
+
+            <h2>Badge sizes</h2>
+            <p>By default the <code>@font-size</code> variable from themes is used. Additionally there are also 3 predefined sizes.</p>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>Large <span class='badge badge-large'>8</span></div>
+              <div class='block'>Medium <span class='badge badge-medium'>2</span></div>
+              <div class='block'>Small <span class='badge badge-small'>7</span></div>
+            `)}
+
+            <p>If you like the size change depending on the parent, use the <code>badge-flexible</code> class. Note: Best used for larger sizes. For smaller sizes it could cause the number to be mis-aligned by a pixel.</p>
+            {this.renderExampleHTML(dedent`
+              <h1 class='block'>Heading <span class='badge badge-flexible'>1</span></h1>
+              <h2 class='block'>Heading <span class='badge badge-flexible'>2</span></h2>
+              <h3 class='block'>Heading <span class='badge badge-flexible'>3</span></h3>
+            `)}
+
+            <h2>Icon Badges</h2>
+            <p>See the icons section to get an overview of all Octicons.</p>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <span class='badge icon icon-gear'>4</span>
+                <span class='badge badge-info icon icon-cloud-download'>13</span>
+                <span class='badge badge-success icon icon-octoface'>5</span>
+              </div>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='buttons' title='Buttons'>
+            <p>Buttons are similar to bootstrap buttons</p>
+
+            <h2>Standalone buttons</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <button class='btn'>Button</button>
+              </div>
+              <div class='block'>
+                <button class='btn btn-xs'>Extra Small Button</button>
+              </div>
+              <div class='block'>
+                <button class='btn btn-sm'>Small Button</button>
+              </div>
+              <div class='block'>
+                <button class='btn btn-lg'>Large Button</button>
+              </div>
+            `)}
+
+            <h2>Colored buttons</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <button class='btn btn-primary inline-block-tight'>Primary</button>
+                <button class='btn btn-primary selected inline-block-tight'>Selected Primary</button>
+              </div>
+
+              <div class='block'>
+                <button class='btn btn-info inline-block-tight'>Info</button>
+                <button class='btn btn-info selected inline-block-tight'>Selected Info</button>
+              </div>
+
+              <div class='block'>
+                <button class='btn btn-success inline-block-tight'>Success</button>
+                <button class='btn btn-success selected inline-block-tight'>Selected Success</button>
+              </div>
+
+              <div class='block'>
+                <button class='btn btn-warning inline-block-tight'>Warning</button>
+                <button class='btn btn-warning selected inline-block-tight'>Selected Warning</button>
+              </div>
+
+              <div class='block'>
+                <button class='btn btn-error inline-block-tight'>Error</button>
+                <button class='btn btn-error selected inline-block-tight'>Selected Error</button>
+              </div>
+            `)}
+
+            <h2>Icon buttons</h2>
+            <p>Overview of all <a href='https://octicons.github.com/'>Octicons</a>.</p>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <button class='btn icon icon-gear inline-block-tight'>Settings</button>
+                <button class='btn btn-primary icon icon-cloud-download inline-block-tight'>Install</button>
+                <button class='btn btn-error icon icon-octoface inline-block-tight'>Danger</button>
+              </div>
+            `)}
+
+            <h2>Button Groups</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <div>Normal size</div>
+                <div class='btn-group'>
+                  <button class='btn'>One</button>
+                  <button class='btn'>Two</button>
+                  <button class='btn'>Three</button>
+                </div>
+              </div>
+
+              <div class='block'>
+                <div>Extra Small</div>
+                <div class='btn-group btn-group-xs'>
+                  <button class='btn'>One</button>
+                  <button class='btn'>Two</button>
+                  <button class='btn'>Three</button>
+                </div>
+              </div>
+
+              <div class='block'>
+                <div>Small</div>
+                <div class='btn-group btn-group-sm'>
+                  <button class='btn'>One</button>
+                  <button class='btn'>Two</button>
+                  <button class='btn'>Three</button>
+                </div>
+              </div>
+
+              <div class='block'>
+                <div>Large</div>
+                <div class='btn-group btn-group-lg'>
+                  <button class='btn'>One</button>
+                  <button class='btn'>Two</button>
+                  <button class='btn'>Three</button>
+                </div>
+              </div>
+            `)}
+
+            <h2>Button Toolbars</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='btn-toolbar'>
+                <div class='btn-group'>
+                  <button class='btn'>One</button>
+                  <button class='btn'>Two</button>
+                  <button class='btn'>Three</button>
+                </div>
+
+                <div class='btn-group'>
+                  <button class='btn'>Four</button>
+                  <button class='btn'>Five</button>
+                </div>
+
+                <button class='btn'>Six</button>
+                <button class='btn'>Seven</button>
+              </div>
+            `)}
+
+            <h2>Selected buttons</h2>
+            <p>Buttons can be marked selected by adding a <code>.selected</code> class. Useful for toggle groups.</p>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <div class='btn-group'>
+                  <button class='btn selected'>One</button>
+                  <button class='btn'>Two</button>
+                  <button class='btn'>Three</button>
+                </div>
+              </div>
+
+              <div class='block'>
+                <div class='btn-group'>
+                  <button class='btn'>One</button>
+                  <button class='btn selected'>Two</button>
+                  <button class='btn'>Three</button>
+                </div>
+              </div>
+
+              <div class='block'>
+                <div class='btn-group'>
+                  <button class='btn'>One</button>
+                  <button class='btn'>Two</button>
+                  <button class='btn selected'>Three</button>
+                </div>
+              </div>
+
+              <div class='block'>
+                <div class='btn-group'>
+                  <button class='btn selected'>One</button>
+                  <button class='btn selected'>Two</button>
+                  <button class='btn'>Three</button>
+                </div>
+              </div>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='panel' title='Panels'>
+            <p>A container attached to some side of the Atom UI.</p>
+            {this.renderExampleHTML(dedent`
+              <atom-panel>
+                Some content
+              </atom-panel>
+            `)}
+
+            <h2>Inset Panel</h2>
+            <p>Use inside a panel</p>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='padded'>
+                <div class="inset-panel padded">Some inset content</div>
+              </atom-panel>
+            `)}
+
+            <h2>With a heading</h2>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='padded'>
+                <div class="inset-panel">
+                  <div class="panel-heading">An inset-panel heading</div>
+                  <div class="panel-body padded">Some Content</div>
+                </div>
+              </atom-panel>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='list-group' title='List Group'>
+            <p>Use for anything that requires a list.</p>
+            {this.renderExampleHTML(dedent`
+              <ul class='list-group'>
+                <li class='list-item'><span>Normal item</span></li>
+                <li class='list-item selected'><span>This is the Selected item</span></li>
+                <li class='list-item text-subtle'><span>Subtle</span></li>
+                <li class='list-item text-info'><span>Info</span></li>
+                <li class='list-item text-success'><span>Success</span></li>
+                <li class='list-item text-warning'><span>Warning</span></li>
+                <li class='list-item text-error'><span>Error</span></li>
+              </ul>
+            `)}
+
+            <h2>With icons</h2>
+            {this.renderExampleHTML(dedent`
+              <ul class='list-group'>
+                <li class='list-item'>
+                  <span class='icon icon-file-directory'>Using a span with an icon</span>
+                </li>
+                <li class='list-item'>
+                  <i class='icon icon-file-directory'></i>
+                  <span>With .icon-file-directory using &lt;i&gt; tags</span>
+                </li>
+                <li class='list-item selected'>
+                  <span class='icon icon-file-directory'>Selected with .icon-file-directory</span>
+                </li>
+                <li class='list-item'>
+                  <span class='no-icon'>With .no-icon</span>
+                </li>
+                <li class='list-item'>
+                  <span class='icon icon-file-text'>With icon-file-text</span>
+                </li>
+                <li class='list-item'>
+                  <span class='icon icon-file-media'>With icon-file-media</span>
+                </li>
+                <li class='list-item'>
+                  <span class='icon icon-file-symlink-file'>With icon-file-symlink-file</span>
+                </li>
+                <li class='list-item'>
+                  <span class='icon icon-file-submodule'>With icon-file-submodule</span>
+                </li>
+                <li class='list-item'>
+                  <span class='icon icon-book'>With icon-book</span>
+                </li>
+              </ul>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='list-tree' title='List Tree'>
+            <p>A <code>.list-tree</code> is a special case of <code>.list-group</code>.</p>
+            {this.renderExampleHTML(dedent`
+              <ul class='list-tree'>
+                <li class='list-nested-item'>
+                  <div class='list-item'>
+                    <span class='icon icon-file-directory'>A Directory</span>
+                  </div>
+
+                  <ul class='list-tree'>
+                    <li class='list-nested-item'>
+                      <div class='list-item'>
+                        <span class='icon icon-file-directory'>Nested Directory</span>
+                      </div>
+
+                      <ul class='list-tree'>
+                        <li class='list-item'>
+                          <span class='icon icon-file-text'>File one</span>
+                        </li>
+                      </ul>
+                    </li>
+
+                    <li class='list-nested-item collapsed'>
+                      <div class='list-item'>
+                        <span class='icon icon-file-directory'>Collapsed Nested Directory</span>
+                      </div>
+
+                      <ul class='list-tree'>
+                        <li class='list-item'>
+                          <span class='icon icon-file-text'>File one</span>
+                        </li>
+                      </ul>
+                    </li>
+
+                    <li class='list-item'>
+                      <span class='icon icon-file-text'>File one</span>
+                    </li>
+
+                    <li class='list-item selected'>
+                      <span class='icon icon-file-text'>File three .selected!</span>
+                    </li>
+                  </ul>
+                </li>
+
+                <li class='list-item'>
+                  <span class='icon icon-file-text'>.icon-file-text</span>
+                </li>
+
+                <li class='list-item'>
+                  <span class='icon icon-file-symlink-file'>.icon-file-symlink-file</span>
+                </li>
+            `)}
+
+            <h2>With disclosure arrows</h2>
+            <p>Add the class <code>.has-collapsable-children</code> to give the children with nested items disclosure arrows.</p>
+            {this.renderExampleHTML(dedent`
+              <ul class='list-tree has-collapsable-children'>
+                <li class='list-nested-item'>
+                  <div class='list-item'>
+                    <span class='icon icon-file-directory'>A Directory</span>
+                  </div>
+
+                  <ul class='list-tree'>
+                    <li class='list-nested-item'>
+                      <div class='list-item'>
+                        <span class='icon icon-file-directory'>Nested Directory</span>
+                      </div>
+
+                      <ul class='list-tree'>
+                        <li class='list-item'>
+                          <span class='icon icon-file-text'>File one</span>
+                        </li>
+                      </ul>
+                    </li>
+
+                    <li class='list-nested-item collapsed'>
+                      <div class='list-item'>
+                        <span class='icon icon-file-directory'>Collapsed Nested Directory</span>
+                      </div>
+
+                      <ul class='list-tree'>
+                        <li class='list-item'>
+                          <span class='icon icon-file-text'>File one</span>
+                        </li>
+                      </ul>
+                    </li>
+
+                    <li class='list-item'>
+                      <span class='icon icon-file-text'>File one</span>
+                    </li>
+
+                    <li class='list-item selected'>
+                      <span class='icon icon-file-text'>File three .selected!</span>
+                    </li>
+                  </ul>
+                </li>
+
+                <li class='list-item'>
+                  <span class='icon icon-file-text'>.icon-file-text</span>
+                </li>
+
+                <li class='list-item'>
+                  <span class='icon icon-file-symlink-file'>.icon-file-symlink-file</span>
+                </li>
+              </ul>
+            `)}
+
+            <h2>With disclosure arrows at only one level.</h2>
+            <p>Add the class <code>.has-flat-children</code> to sub-<code>.list-tree</code>s to indicate that the children will not be collapsable.</p>
+            {this.renderExampleHTML(dedent`
+              <ul class='list-tree has-collapsable-children '>
+                <li class='list-nested-item'>
+                  <div class='list-item'>
+                    <span class='icon icon-file-text'>This is a collapsable section</span>
+                  </div>
+
+                  <ul class='list-tree has-flat-children'>
+                    <li class='list-item'>Something is here</li>
+                    <li class='list-item selected'>Something selected</li>
+                  </ul>
+                </li>
+
+                <li class='list-nested-item'>
+                  <div class='list-item'>
+                    <span class='icon icon-file-directory'>Another collapsable section</span>
+                  </div>
+
+                  <ul class='list-tree has-flat-children'>
+                    <li class='list-item'>Something is here</li>
+                    <li class='list-item'>Something else</li>
+                  </ul>
+                </li>
+              </ul>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='select-list' title='Select List'>
+            <p>This is how you will typically specify a <code>.select-list</code>.</p>
+            <ExampleSelectListView />
+
+            <p>The list items have many options you can use, and shows you how they will display.</p>
+
+            <h2>Basic example with one item selected</h2>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='modal'>
+                <div class='select-list'>
+                  <ol class='list-group'>
+                    <li class='selected'>one</li>
+                    <li>two</li>
+                    <li>three</li>
+                  </ol>
+                </div>
+              </atom-panel>
+            `)}
+
+            <h2>Single line with icons</h2>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='modal'>
+                <div class='select-list'>
+                  <ol class='list-group'>
+                    <li class='selected'>
+                      <div class='status status-added icon icon-diff-added'></div>
+                      <div class='icon icon-file-text'>Some file</div>
+                    </li>
+
+                    <li>
+                      <div class='status status-modified icon icon-diff-modified'></div>
+                      <div class='icon icon-file-text'>Another file</div>
+                    </li>
+
+                    <li>
+                      <div class='status status-removed icon icon-diff-removed'></div>
+                      <div class='icon icon-file-text'>Yet another file</div>
+                    </li>
+                  </ol>
+                </div>
+              </atom-panel>
+            `)}
+
+            <h2>Single line with key-bindings</h2>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='modal'>
+                <div class='select-list'>
+                  <ol class='list-group'>
+                    <li class='selected'>
+                      <div class='pull-right'>
+                        <kbd class='key-binding pull-right'>⌘⌥↓</kbd>
+                      </div>
+
+                      <span class='icon icon-file-text'>Some file</span>
+                    </li>
+
+                    <li>
+                      <div class='pull-right key-bindings'>
+                        <kbd class='key-binding'>⌘⌥A</kbd>
+                        <kbd class='key-binding'>⌘⌥O</kbd>
+                      </div>
+
+                      <span class='icon icon-file-text'>Another file with a long name</span>
+                    </li>
+
+                    <li>
+                      <div class='pull-right'>
+                        <kbd class='key-binding'>⌘⌥↓</kbd>
+                      </div>
+
+                      <span class='icon icon-file-text'>Yet another file</span>
+                    </li>
+                  </ol>
+                </div>
+              </atom-panel>
+            `)}
+
+            <h2>Multiple lines with no icons</h2>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='modal'>
+                <div class='select-list'>
+                  <ol class='list-group'>
+                    <li class='two-lines'>
+                      <div class='primary-line'>Primary line</div>
+                      <div class='secondary-line'>Secondary line</div>
+                    </li>
+
+                    <li class='two-lines selected'>
+                      <div class='primary-line'>A thing</div>
+                      <div class='secondary-line'>Description of the thing</div>
+                    </li>
+                  </ol>
+                </div>
+              </atom-panel>
+            `)}
+
+            <h2>Multiple lines with icons</h2>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='modal'>
+                <div class='select-list'>
+                  <ol class='list-group'>
+                    <li class='two-lines'>
+                      <div class='status status-added icon icon-diff-added'></div>
+                      <div class='primary-line icon icon-file-text'>Primary line</div>
+                      <div class='secondary-line no-icon'>Secondary line</div>
+                    </li>
+
+                    <li class='two-lines selected'>
+                      <div class='status status-modified icon icon-diff-modified'></div>
+                      <div class='primary-line icon icon-file-symlink-file'>A thing</div>
+                      <div class='secondary-line no-icon'>Description of the thing</div>
+                    </li>
+
+                    <li class='two-lines'>
+                      <div class='status status-renamed icon icon-diff-renamed'></div>
+                      <div class='primary-line icon icon-file-symlink-file'>A thing</div>
+                      <div class='secondary-line no-icon'>Description of the thing</div>
+                    </li>
+                  </ol>
+                </div>
+              </atom-panel>
+            `)}
+
+            <h2>Using mark-active class to indicate the active item</h2>
+            <p>Use ...</p>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='modal'>
+                <div class='select-list'>
+                  <ol class='list-group mark-active'>
+                    <li class='selected'>Selected &mdash; user is arrowing through the list.</li>
+                    <li class='active'>This is the active item</li>
+                    <li class='selected active'>Selected AND Active!</li>
+                  </ol>
+                </div>
+              </atom-panel>
+            `)}
+
+            <h2>Error messages</h2>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='modal'>
+                <div class='select-list'>
+                  <atom-text-editor mini>I searched for this</atom-text-editor>
+                  <div class='error-message'>Nothing has been found!</div>
+                </div>
+              </atom-panel>
+            `)}
+
+            <h2>Loading message</h2>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='modal'>
+                <div class='select-list'>
+                  <atom-text-editor mini>User input</atom-text-editor>
+                  <div class='loading'>
+                    <span class='loading-message'>Chill, bro. Things are loading.</span>
+                    <span class='badge'>1234</span>
+                  </div>
+                </div>
+              </atom-panel>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='popover-list' title='Popover List'>
+            <p>
+              A <code>.popover-list</code> is a <code>.select-list</code> that
+              is meant to popover the code for something like autocomplete.
+            </p>
+
+            <h2>Basic example with one item selected</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='select-list popover-list'>
+                <atom-text-editor mini>'User types here..'</atom-text-editor>
+                <ol class='list-group'>
+                  <li class='selected'>one</li>
+                  <li>two</li>
+                  <li>three</li>
+                </ol>
+              </div>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='modal-panel' title='Modals'>
+            <p>Modals are like dialog boxes.</p>
+            {this.renderExampleHTML(dedent`
+              <atom-panel class='modal'>
+                <div>Some content</div>
+              </atom-panel>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='tooltips' title='Tooltips'>
+            <p>
+              You do not create the markup directly. You call
+              <code>{`element.setTooltip(title, {command, commandElement}={})`}</code>.
+              Passing in a <code>command</code> (like <code>find-and-replace:show-find</code>) and
+              <code>commandElement</code> (context for the command) will yield a tip with a keystroke.
+            </p>
+
+            {this.renderExampleHTML(dedent`
+              <div class='tooltip top'>
+                <div class='tooltip-arrow'></div>
+                <div class='tooltip-inner'>This is a message</div>
+              </div>
+
+              <div class='tooltip top'>
+                <div class='tooltip-arrow'></div>
+                <div class='tooltip-inner'>
+                  With a keystroke <span class="keystroke">cmd-shift-o</span>
+                </div>
+              </div>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='error-messages' title='Messages'>
+            <p>
+              Use to convey info to the user when something happens. See <code>find-and-replace</code>
+              for an example.
+            </p>
+
+            <h2>Error messages</h2>
+            {this.renderExampleHTML(dedent`
+              <ul class='error-messages block'>
+                <li>This is an error!</li>
+                <li>And another</li>
+              </ul>
+            `)}
+
+            <h2>Info messages</h2>
+            {this.renderExampleHTML(dedent`
+              <ul class='info-messages block'>
+                <li>Info line</li>
+                <li>Another info line</li>
+              </ul>
+            `)}
+
+            <h2>Background Messages</h2>
+            <p>
+              Subtle background messages for panes. Use for cases when there are no results.
+            </p>
+
+            {this.renderExampleHTML(dedent`
+              <ul class='background-message'>
+                <li>No Results</li>
+              </ul>
+            `)}
+
+            <p>
+              Centered background messages will center horizontally and vertically.
+              Your container for this element must have <code>position</code> set with <code>relative</code> or
+              <code>absolute</code>.
+            </p>
+
+            {this.renderExampleHTML(dedent`
+              <ul class='background-message centered'>
+                <li>No Results</li>
+              </ul>
+            `)}
+          </StyleguideSection>
+
+          <StyleguideSection onDidInitialize={this.didInitializeSection.bind(this)} name='progress' title='Loading/Progress'>
+            <h2>Progress Bars</h2>
+            {this.renderExampleHTML(dedent`
+              <div class='block'>
+                <progress class='inline-block'></progress>
+                <span class='inline-block'>Indeterminate</span>
+              </div>
+
+              <div class='block'>
+                <progress class='inline-block' max='100' value='25'></progress>
+                <span class='inline-block'>At 25%</span>
+              </div>
+
+              <div class='block'>
+                <progress class='inline-block' max='100' value='50'></progress>
+                <span class='inline-block'>At 50%</span>
+              </div>
+
+              <div class='block'>
+                <progress class='inline-block' max='100' value='75'></progress>
+                <span class='inline-block'>At 75%</span>
+              </div>
+
+              <div class='block'>
+                <progress class='inline-block' max='100' value='100'></progress>
+                <span class='inline-block'>At 100%</span>
+              </div>
+            `)}
+
+            <h2>Loading Spinners</h2>
+            {this.renderExampleHTML(dedent`
+              <span class='loading loading-spinner-tiny inline-block'></span>
+              <span class='loading loading-spinner-small inline-block'></span>
+              <span class='loading loading-spinner-medium inline-block'></span>
+              <span class='loading loading-spinner-large inline-block'></span>
+            `)}
+          </StyleguideSection>
+        </main>
+      </div>
+    )
+  }
+
+  renderExampleHTML (html) {
+    return (
+      <div className='example'>
+        <div className='example-rendered' innerHTML={html} />
+        <div className='example-code show-example-html'>
+          <CodeBlock cssClass='example-html' grammarScopeName='text.html.basic' code={html} />
+        </div>
+      </div>
+    )
+  }
+
+  didInitializeSection (section) {
+    this.sections.push(section)
+  }
+}
diff --git a/packages/styleguide/lib/styleguide.js b/packages/styleguide/lib/styleguide.js
new file mode 100644
index 000000000..709a53697
--- /dev/null
+++ b/packages/styleguide/lib/styleguide.js
@@ -0,0 +1,24 @@
+const {CompositeDisposable} = require('atom')
+let StyleguideView = null
+
+const STYLEGUIDE_URI = 'atom://styleguide'
+
+module.exports = {
+  activate () {
+    this.subscriptions = new CompositeDisposable()
+    this.subscriptions.add(atom.workspace.addOpener(filePath => {
+      if (filePath === STYLEGUIDE_URI) return this.createStyleguideView({uri: STYLEGUIDE_URI})
+    }))
+    this.subscriptions.add(atom.commands.add('atom-workspace', 'styleguide:show', () => atom.workspace.open(STYLEGUIDE_URI))
+    )
+  },
+
+  deactivate () {
+    this.subscriptions.dispose()
+  },
+
+  createStyleguideView (state) {
+    if (StyleguideView == null) StyleguideView = require('./styleguide-view')
+    return new StyleguideView(state)
+  }
+}
diff --git a/packages/styleguide/menus/styleguide.cson b/packages/styleguide/menus/styleguide.cson
new file mode 100644
index 000000000..4c489e979
--- /dev/null
+++ b/packages/styleguide/menus/styleguide.cson
@@ -0,0 +1,10 @@
+'menu': [
+  'label': 'Packages'
+  'submenu': [
+    'label': 'Styleguide'
+    'submenu': [
+      'label': 'Show'
+      'command': 'styleguide:show'
+    ]
+  ]
+]
diff --git a/packages/styleguide/package-lock.json b/packages/styleguide/package-lock.json
new file mode 100644
index 000000000..6114ee086
--- /dev/null
+++ b/packages/styleguide/package-lock.json
@@ -0,0 +1,50 @@
+{
+  "name": "styleguide",
+  "version": "0.49.12",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "styleguide",
+      "version": "0.49.12",
+      "license": "MIT",
+      "dependencies": {
+        "atom-select-list": "^0.7.0",
+        "dedent": "^0.7.0",
+        "etch": "0.9.0"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/atom-select-list": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/atom-select-list/-/atom-select-list-0.7.2.tgz",
+      "integrity": "sha512-a707OB1DhLGjzqtFrtMQKH7BBxFuCh8UBoUWxgFOrLrSwVh3g+/TlVPVDOz12+U0mDu3mIrnYLqQyhywQOTxhw==",
+      "dependencies": {
+        "etch": "^0.12.6",
+        "fuzzaldrin": "^2.1.0"
+      }
+    },
+    "node_modules/atom-select-list/node_modules/etch": {
+      "version": "0.12.8",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.12.8.tgz",
+      "integrity": "sha512-dFLRe4wLroVtwzyy1vGlE3BSDZHiL0kZME5XgNGzZIULcYTvVno8vbiIleAesoKJmwWaxDTzG+4eppg2zk14JQ=="
+    },
+    "node_modules/dedent": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/dedent/-/dedent-0.7.0.tgz",
+      "integrity": "sha512-Q6fKUPqnAHAyhiUgFU7BUzLiv0kd8saH9al7tnu5Q/okj6dnupxyTgFIBjVzJATdfIAm9NAsvXNzjaKa+bxVyA=="
+    },
+    "node_modules/etch": {
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.9.0.tgz",
+      "integrity": "sha512-UG0mzvvs8JyBo4tDG39mqGuZ7zZGKFn9QOzO+BhrKe17R/f+3U+jFgA/bjW/gTA2ykytcE/Qm826ltykCiIrFA=="
+    },
+    "node_modules/fuzzaldrin": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/fuzzaldrin/-/fuzzaldrin-2.1.0.tgz",
+      "integrity": "sha512-zgllBYwfHR5P3CncJiGbGVPpa3iFYW1yuPaIv8DiTVRrcg5/6uETNL5zvIoKflG1aifXVUZTlIroDehw4WygGA=="
+    }
+  }
+}
diff --git a/packages/styleguide/package.json b/packages/styleguide/package.json
new file mode 100644
index 000000000..3fe11430a
--- /dev/null
+++ b/packages/styleguide/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "styleguide",
+  "main": "./lib/styleguide",
+  "version": "0.49.12",
+  "description": "A visual styleguide of the Pulsars's UI components.",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "dependencies": {
+    "atom-select-list": "^0.7.0",
+    "dedent": "^0.7.0",
+    "etch": "0.9.0"
+  },
+  "deserializers": {
+    "StyleguideView": "createStyleguideView"
+  },
+  "engines": {
+    "atom": "*"
+  }
+}
diff --git a/packages/styleguide/spec/async-spec-helpers.js b/packages/styleguide/spec/async-spec-helpers.js
new file mode 100644
index 000000000..73002c049
--- /dev/null
+++ b/packages/styleguide/spec/async-spec-helpers.js
@@ -0,0 +1,103 @@
+/** @babel */
+
+export function beforeEach (fn) {
+  global.beforeEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+export function afterEach (fn) {
+  global.afterEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+['it', 'fit', 'ffit', 'fffit'].forEach(function (name) {
+  module.exports[name] = function (description, fn) {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, function () {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise(() => result)
+      }
+    })
+  }
+})
+
+export async function conditionPromise (condition, description = 'anonymous condition') {
+  const startTime = Date.now()
+
+  while (true) {
+    await timeoutPromise(100)
+
+    if (await condition()) {
+      return
+    }
+
+    if (Date.now() - startTime > 5000) {
+      throw new Error('Timed out waiting on ' + description)
+    }
+  }
+}
+
+export function timeoutPromise (timeout) {
+  return new Promise(function (resolve) {
+    global.setTimeout(resolve, timeout)
+  })
+}
+
+function waitsForPromise (fn) {
+  const promise = fn()
+  global.waitsFor('spec promise to resolve', function (done) {
+    promise.then(done, function (error) {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
+
+export function emitterEventPromise (emitter, event, timeout = 15000) {
+  return new Promise((resolve, reject) => {
+    const timeoutHandle = setTimeout(() => {
+      reject(new Error(`Timed out waiting for '${event}' event`))
+    }, timeout)
+    emitter.once(event, () => {
+      clearTimeout(timeoutHandle)
+      resolve()
+    })
+  })
+}
+
+export function promisify (original) {
+  return function (...args) {
+    return new Promise((resolve, reject) => {
+      args.push((err, ...results) => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve(...results)
+        }
+      })
+
+      return original(...args)
+    })
+  }
+}
+
+export function promisifySome (obj, fnNames) {
+  const result = {}
+  for (const fnName of fnNames) {
+    result[fnName] = promisify(obj[fnName])
+  }
+  return result
+}
diff --git a/packages/styleguide/spec/styleguide-spec.js b/packages/styleguide/spec/styleguide-spec.js
new file mode 100644
index 000000000..74f751cf8
--- /dev/null
+++ b/packages/styleguide/spec/styleguide-spec.js
@@ -0,0 +1,18 @@
+const {it, fit, ffit, beforeEach, afterEach} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+describe('Style Guide', () => {
+  beforeEach(async () => {
+    await atom.packages.activatePackage('styleguide')
+  })
+
+  describe('the Styleguide view', () => {
+    let styleGuideView
+    beforeEach(async () => {
+      styleGuideView = await atom.workspace.open('atom://styleguide')
+    })
+
+    it('opens the style guide', () => {
+      expect(styleGuideView.element.textContent).toContain('Styleguide')
+    })
+  })
+})
diff --git a/packages/styleguide/styles/components.less b/packages/styleguide/styles/components.less
new file mode 100644
index 000000000..d9d83c934
--- /dev/null
+++ b/packages/styleguide/styles/components.less
@@ -0,0 +1,134 @@
+@import "ui-variables";
+
+//
+// This adds some component styles specifically for the Styleguide
+// --------------------------------
+
+.styleguide {
+
+  // Icons ---------------
+
+  [data-name="icons"] {
+    .example-rendered {
+      display: flex;
+      flex-wrap: wrap;
+      align-content: flex-start;
+    }
+
+    .example-code {
+      display: none; // remove, doesn't make much sense here
+    }
+
+    .icon {
+      position: relative;
+      flex: 1 0 200px;
+      padding: 10px 0 10px 40px;
+      color: @text-color-subtle;
+      &:before {
+        position: absolute;
+        margin-left: -32px;
+        color: @text-color-highlight;
+        text-align: center;
+      }
+      &:hover {
+        color: @text-color-highlight;
+        &:before {
+          color: @text-color-selected;
+          font-size: 32px;
+          width: 32px;
+          height: 32px;
+          margin-top: -8px;
+          margin-left: -40px; // 32px (initial) + 8px (grow)
+        }
+      }
+    }
+
+    // Make the Gist logo bigger
+    .icon-logo-gist {
+      &:before,
+      &:hover:before {
+        font-size: 2.5em;
+        margin-top: -.05em;
+        margin-left: -1.3em;
+        width: 16px;
+        height: 16px;
+      }
+    }
+
+    // Make the GitHub logo bigger
+    .icon-logo-github {
+      &:before,
+      &:hover:before {
+        font-size: 3em;
+        margin-top: .08em;
+        margin-left: -1.2em;
+      }
+    }
+  }
+
+  // Inputs + controls ---------------
+
+  .input-search,
+  .input-textarea {
+    margin-top: @component-padding;
+  }
+
+  .input-label {
+    display: block;
+    width: -webkit-max-content;
+    margin: 0 1em 1em 0;
+  }
+
+  .input-color,
+  .input-number,
+  .input-select {
+    margin: 0 @component-padding 0 0 !important;
+  }
+
+
+  // Site colors ---------------
+
+  .ui-site-1,
+  .ui-site-2,
+  .ui-site-3,
+  .ui-site-4,
+  .ui-site-5 {
+    height: 10px;
+    width: 100px;
+  }
+
+
+  // Modals ---------------
+
+  atom-panel.modal {
+    // makde them responsive in the styleguide
+    position: relative;
+    max-width: 100%;
+    left: 0;
+    margin: 0;
+  }
+
+
+  // Misc ---------------
+
+  .popover-list {
+    position: relative;
+  }
+
+  .popover-list,
+  .select-list {
+    atom-text-editor[mini] { height: 27px; }
+  }
+
+  .tooltip {
+    position: relative;
+    opacity: 1;
+    display: inline-block;
+    margin-right: @component-padding;
+  }
+
+  [data-name="error-messages"] .example-rendered {
+    min-height: 60px; // don't cut off centered messages
+  }
+
+}
diff --git a/packages/styleguide/styles/styleguide.less b/packages/styleguide/styles/styleguide.less
new file mode 100644
index 000000000..b22f6005d
--- /dev/null
+++ b/packages/styleguide/styles/styleguide.less
@@ -0,0 +1,129 @@
+@import "ui-variables";
+@import "syntax-variables";
+
+@styleguide-spacing: @component-padding *1.5;
+@styleguide-bg: darken(@base-background-color, 2%);
+
+.styleguide {
+  position: relative;
+  display: flex;
+  flex-direction: column;
+
+  a {
+    text-decoration: underline;
+  }
+}
+
+.styleguide-controls {
+  position: absolute;
+  right: @component-padding;
+  top: @component-padding;
+  z-index: 100;
+}
+
+.styleguide-header {
+  padding: @styleguide-spacing;
+  border-bottom: 1px solid @base-border-color;
+  h1 {
+    font-size: 2em;
+    margin: 0 0 .5em 0;
+    color: @text-color-highlight;
+  }
+  p {
+    font-size: 1.2em;
+    &:last-of-type {
+      margin-bottom: 0;
+    }
+  }
+}
+
+.styleguide-sections {
+  flex: 1;
+  overflow: auto;
+
+  & > section {
+    background-color: @styleguide-bg;
+    padding: 0;
+    border-bottom: 1px solid @base-border-color;
+    border-top: none;
+
+    &:last-child {
+      margin-bottom: 0;
+    }
+
+    &.collapsed {
+      background-color: @base-background-color;
+      > .section-heading {
+        display: block;
+        margin: 0;
+        padding-bottom: @styleguide-spacing;
+        color: @text-color;
+        &:hover {
+          color: @text-color-highlight;
+          background-color: @background-color-highlight;
+        }
+        &:active {
+          background-color: @base-background-color;
+        }
+      }
+      > * {
+        display: none
+      }
+    }
+  }
+
+  .section-heading.section-heading {
+    padding: @styleguide-spacing @styleguide-spacing 0 @styleguide-spacing;
+    cursor: pointer;
+    font-weight: normal;
+    font-size: 1.8em;
+    color: @text-color-highlight;
+  }
+
+  section > h2 {
+    font-size: 1.5em;
+    line-height: 1.2;
+    margin: 1em @styleguide-spacing 0 @styleguide-spacing;
+    color: @text-color-highlight;
+  }
+
+  section > p {
+    font-size: 1.1em;
+    margin: .5em @styleguide-spacing 1em @styleguide-spacing;
+  }
+}
+
+// Example -------------------------------
+
+.styleguide .example {
+  @example-background: @base-background-color;
+
+  display: flex;
+  flex-wrap: wrap;
+  border-radius: @component-border-radius;
+  padding: @component-padding / 2;
+
+  .example-rendered,
+  .example-code {
+    position: relative;
+    flex: 1 1 300px;
+    min-width: 0;
+    margin: @component-padding / 2;
+    border-radius: @component-border-radius;
+    border: 1px solid @tool-panel-border-color;
+  }
+
+  .example-rendered {
+    padding: @component-padding;
+    background: @example-background;
+    overflow: hidden;
+  }
+
+  .example-code {
+    background-color: @syntax-background-color;
+    pre {
+      border: none;
+      background-color: inherit;
+    }
+  }
+}
diff --git a/packages/styleguide/styles/variables.less b/packages/styleguide/styles/variables.less
new file mode 100644
index 000000000..b89583b39
--- /dev/null
+++ b/packages/styleguide/styles/variables.less
@@ -0,0 +1,148 @@
+@import "ui-variables";
+@import "syntax-variables";
+
+.styleguide [data-name="variables"] {
+
+  // Text colors
+  .color( text-color );
+  .color( text-color-subtle );
+  .color( text-color-highlight );
+  .color( text-color-selected );
+  .color( text-color-info );
+  .color( text-color-success );
+  .color( text-color-warning );
+  .color( text-color-error );
+
+  // Background colors
+  .color( background-color-info );
+  .color( background-color-success );
+  .color( background-color-warning );
+  .color( background-color-error );
+  .color( background-color-highlight );
+  .color( background-color-selected );
+  .color( app-background-color );
+
+  // Base colors
+  .color( base-background-color );
+  .color( base-border-color );
+
+  // Pane colors
+  .color( pane-item-background-color );
+  .color( pane-item-border-color );
+
+  // Input colors
+  .color( input-background-color );
+  .color( input-border-color );
+
+  // Panel colors
+  .color( tool-panel-background-color );
+  .color( tool-panel-border-color );
+  .color( inset-panel-background-color );
+  .color( inset-panel-border-color );
+  .color( panel-heading-background-color );
+  .color( panel-heading-border-color );
+  .color( overlay-background-color );
+  .color( overlay-border-color );
+
+  // Button colors
+  .color( button-background-color );
+  .color( button-background-color-hover );
+  .color( button-background-color-selected );
+  .color( button-border-color );
+
+  // Tab colors
+  .color( tab-bar-background-color );
+  .color( tab-bar-border-color );
+  .color( tab-background-color );
+  .color( tab-background-color-active );
+  .color( tab-border-color );
+
+  // Tree-view colors
+  .color( tree-view-background-color );
+  .color( tree-view-border-color );
+
+  // Site colors
+  .color( ui-site-color-1 );
+  .color( ui-site-color-2 );
+  .color( ui-site-color-3 );
+  .color( ui-site-color-4 );
+  .color( ui-site-color-5 );
+
+  // Component sizes
+  .size( disclosure-arrow-size );
+  .size( component-padding );
+  .size( component-icon-padding );
+  .size( component-icon-size );
+  .size( component-line-height );
+  .size( tab-height );
+  .size( font-size );
+
+  // Misc
+  .radius( component-border-radius );
+  .font( font-family );
+
+
+  // Visualize --------------------------------
+
+  .is-color:before,
+  .is-size:after,
+  .is-radius:after {
+    content: "";
+    display: inline-block;
+    height: 20px;
+    vertical-align: middle;
+  }
+  .is-color:before {
+    margin-right: @component-padding*1.5;
+    width: 20%;
+  }
+  .is-size:after {
+    margin-left: @component-padding*1.5;
+    height: 4px;
+    background-color: @text-color;
+  }
+  .is-radius:after {
+    width: 20px;
+    margin-left: @component-padding*1.5;
+    background-color: @text-color;
+  }
+  .is-font:after {
+    margin-left: @component-padding;
+    color: @text-color-highlight;
+  }
+
+
+  // Mixins --------------------------------
+
+  .color(@variable) {
+    .is-color.@{variable}:before {
+      background-color: @@variable;
+    }
+  }
+
+  .size(@variable) {
+    .is-size.@{variable}:after {
+      width: @@variable;
+    }
+  }
+
+  .radius(@variable) {
+    .is-radius.@{variable}:after {
+      border-radius: @@variable;
+    }
+  }
+
+  .font(@variable) {
+    .is-font.@{variable}:after {
+      content: @@variable;
+      font-family: @@variable;
+    }
+  }
+
+
+  // Custom styling for vars --------------------------------
+
+  .example-code {
+    display: none; // remove, doesn't make much sense here
+  }
+}
diff --git a/packages/tabs/README.md b/packages/tabs/README.md
new file mode 100644
index 000000000..dadf6dc31
--- /dev/null
+++ b/packages/tabs/README.md
@@ -0,0 +1,13 @@
+# Tabs package
+
+Display selectable tabs above the editor.
+
+![](https://cloud.githubusercontent.com/assets/18362/10862852/c6de2de0-800d-11e5-8158-284f30aaf5d2.png)
+
+## API
+
+Tabs can display icons next to file names. These icons are customizable by installing a package that provides an `atom.file-icons` service.
+
+The `atom.file-icons` service must provide the following methods:
+
+* `iconClassForPath(path)` - Returns a CSS class name to add to the tab view
diff --git a/packages/tabs/lib/default-file-icons.js b/packages/tabs/lib/default-file-icons.js
new file mode 100644
index 000000000..7589f8200
--- /dev/null
+++ b/packages/tabs/lib/default-file-icons.js
@@ -0,0 +1,29 @@
+const fs = require('fs-plus')
+const path = require('path')
+
+class DefaultFileIcons {
+  iconClassForPath (filePath, caller) {
+    if (caller !== 'tabs-mru-switcher') return ''
+    if (typeof filePath !== 'string') return 'icon-file-text'
+
+    const extension = path.extname(filePath)
+
+    if (fs.isSymbolicLinkSync(filePath)) {
+      return 'icon-file-symlink-file'
+    } else if (fs.isReadmePath(filePath)) {
+      return 'icon-book'
+    } else if (fs.isCompressedExtension(extension)) {
+      return 'icon-file-zip'
+    } else if (fs.isImageExtension(extension)) {
+      return 'icon-file-media'
+    } else if (fs.isPdfExtension(extension)) {
+      return 'icon-file-pdf'
+    } else if (fs.isBinaryExtension(extension)) {
+      return 'icon-file-binary'
+    } else {
+      return 'icon-file-text'
+    }
+  }
+}
+
+module.exports = new DefaultFileIcons()
diff --git a/packages/tabs/lib/get-icon-services.js b/packages/tabs/lib/get-icon-services.js
new file mode 100644
index 000000000..eb0981ae2
--- /dev/null
+++ b/packages/tabs/lib/get-icon-services.js
@@ -0,0 +1,92 @@
+const DefaultFileIcons = require('./default-file-icons')
+const {Emitter, CompositeDisposable} = require('atom')
+
+let iconServices
+module.exports = function () {
+  if (!iconServices) iconServices = new IconServices()
+  return iconServices
+}
+
+class IconServices {
+  constructor () {
+    this.emitter = new Emitter()
+    this.elementIcons = null
+    this.elementIconDisposables = new CompositeDisposable()
+    this.fileIcons = DefaultFileIcons
+  }
+
+  onDidChange (callback) {
+    return this.emitter.on('did-change', callback)
+  }
+
+  resetElementIcons () {
+    this.setElementIcons(null)
+  }
+
+  resetFileIcons () {
+    this.setFileIcons(DefaultFileIcons)
+  }
+
+  setElementIcons (service) {
+    if (service !== this.elementIcons) {
+      if (this.elementIconDisposables != null) {
+        this.elementIconDisposables.dispose()
+      }
+      if (service) { this.elementIconDisposables = new CompositeDisposable() }
+      this.elementIcons = service
+      return this.emitter.emit('did-change')
+    }
+  }
+
+  setFileIcons (service) {
+    if (service !== this.fileIcons) {
+      this.fileIcons = service
+      return this.emitter.emit('did-change')
+    }
+  }
+
+  updateMRUIcon (view) {
+    if (this.elementIcons) {
+      view.firstLineDiv.classList.add('icon')
+      this.elementIconDisposables.add(this.elementIcons(view.firstLineDiv, view.itemPath))
+    } else {
+      let typeClasses = this.fileIcons.iconClassForPath(view.itemPath, 'tabs-mru-switcher')
+      if (typeClasses) {
+        if (!Array.isArray(typeClasses)) typeClasses = typeClasses.split(/\s+/g)
+        if (typeClasses) view.firstLineDiv.classList.add(...typeClasses)
+      }
+    }
+  }
+
+  updateTabIcon (view) {
+    if (view.iconElement && !view.iconElement.disposed) return
+    if (view.iconName) {
+      const names = !Array.isArray(view.iconName)
+        ? view.iconName.split(/\s+/g)
+        : view.iconName
+      view.itemTitle.classList.remove('icon', `icon-${names[0]}`, ...names)
+    }
+    if (typeof view.item.getIconName === 'function') {
+      view.iconName = view.item.getIconName()
+    } else {
+      view.iconName = null
+    } if (view.iconName) {
+      return view.itemTitle.classList.add('icon', `icon-${view.iconName}`)
+    } else if (view.path != null) {
+      if (this.elementIcons) {
+        view.itemTitle.classList.add('icon')
+        view.iconElement = this.elementIcons(view.itemTitle, view.path, {isTabIcon: true})
+        view.subscriptions.add(view.iconElement)
+      } else {
+        view.iconName = this.fileIcons.iconClassForPath(view.path, 'tabs')
+        if (view.iconName) {
+          let names = view.iconName
+          if (!Array.isArray(names)) {
+            names = names.toString().split(/\s+/g)
+          }
+          return view.itemTitle.classList.add('icon', ...names)
+        }
+      }
+    }
+  }
+}
diff --git a/packages/tabs/lib/layout.js b/packages/tabs/lib/layout.js
new file mode 100644
index 000000000..0bdd6fc62
--- /dev/null
+++ b/packages/tabs/lib/layout.js
@@ -0,0 +1,174 @@
+module.exports = {
+  activate () {
+    this.view = document.createElement('div')
+    atom.workspace.getElement().appendChild(this.view)
+    this.view.classList.add('tabs-layout-overlay')
+  },
+
+  deactivate () {
+    if (this.view.parentElement) {
+      this.view.parentElement.removeChild(this.view)
+    }
+  },
+
+  test: {},
+
+  drag (e) {
+    this.lastCoords = e
+    const pane = this.getPaneAt(e)
+    const itemView = this.getItemViewAt(e)
+    const {item} = e.target
+    if (pane && itemView && item && this.itemIsAllowedInPane(item, pane)) {
+      let coords
+      if (!this.isOnlyTabInPane(pane, e.target) && pane.getItems().length !== 0) {
+        coords = [e.clientX, e.clientY]
+      }
+      this.lastSplit = this.updateView(itemView, coords)
+    } else {
+      this.disableView()
+    }
+  },
+
+  end (e) {
+    this.disableView()
+    if (this.lastCoords == null || !this.getItemViewAt(this.lastCoords)) {
+      return
+    }
+
+    const target = this.getPaneAt(this.lastCoords)
+    if (target == null) {
+      return
+    }
+
+    const tab = e.target
+    const fromPane = tab.pane
+    const {item} = tab
+
+    if (!this.itemIsAllowedInPane(item, target)) {
+      return
+    }
+
+    let toPane
+    switch (this.lastSplit) {
+      case 'left':
+        toPane = target.splitLeft()
+        break
+      case 'right':
+        toPane = target.splitRight()
+        break
+      case 'up':
+        toPane = target.splitUp()
+        break
+      case 'down':
+        toPane = target.splitDown()
+        break
+      default:
+        toPane = target
+    }
+
+    if (toPane === fromPane) {
+      return
+    }
+
+    fromPane.moveItemToPane(item, toPane)
+    toPane.activateItem(item)
+    toPane.activate()
+  },
+
+  getElement ({clientX, clientY}, selector) {
+    if (selector == null) {
+      selector = '*'
+    }
+    return document.elementFromPoint(clientX, clientY).closest(selector)
+  },
+
+  getItemViewAt (coords) {
+    return this.test.itemView || this.getElement(coords, '.item-views')
+  },
+
+  getPaneAt () {
+    if (this.test.pane) {
+      return this.test.pane
+    } else {
+      const element = this.getElement(this.lastCoords, 'atom-pane')
+      if (element) {
+        return element.getModel()
+      }
+    }
+  },
+
+  isOnlyTabInPane (pane, tab) {
+    return pane.getItems().length === 1 && pane === tab.pane
+  },
+
+  normalizeCoords ({left, top, width, height}, [x, y]) {
+    return [(x - left) / width, (y - top) / height]
+  },
+
+  splitType ([x, y]) {
+    if (x < (1 / 3)) {
+      return 'left'
+    } else if (x > (2 / 3)) {
+      return 'right'
+    } else if (y < (1 / 3)) {
+      return 'up'
+    } else if (y > (2 / 3)) {
+      return 'down'
+    }
+  },
+
+  boundsForSplit (split) {
+    switch (split) {
+      case 'left': return [0, 0, 0.5, 1]
+      case 'right': return [0.5, 0, 0.5, 1]
+      case 'up': return [0, 0, 1, 0.5]
+      case 'down': return [0, 0.5, 1, 0.5]
+      default: return [0, 0, 1, 1]
+    }
+  },
+
+  innerBounds ({left, top, width, height}, [x, y, w, h]) {
+    left += x * width
+    top += y * height
+    width *= w
+    height *= h
+    return {left, top, width, height}
+  },
+
+  updateViewBounds ({left, top, width, height}) {
+    this.view.style.left = `${left}px`
+    this.view.style.top = `${top}px`
+    this.view.style.width = `${width}px`
+    this.view.style.height = `${height}px`
+  },
+
+  updateView (pane, coords) {
+    this.view.classList.add('visible')
+    const rect = this.test.rect || pane.getBoundingClientRect()
+    const split = coords ? this.splitType(this.normalizeCoords(rect, coords)) : undefined
+    this.updateViewBounds(this.innerBounds(rect, this.boundsForSplit(split)))
+    return split
+  },
+
+  disableView () {
+    this.view.classList.remove('visible')
+  },
+
+  itemIsAllowedInPane (item, pane) {
+    if (typeof item.getAllowedLocations === 'function') {
+      const allowedLocations = item.getAllowedLocations()
+      if (allowedLocations == null) {
+        return true
+      }
+
+      const container = pane.getContainer()
+      let location = 'center'
+      if (typeof container.getLocation === 'function') {
+        location = container.getLocation() || 'center'
+      }
+
+      return allowedLocations.includes(location)
+    }
+    return true
+  }
+}
diff --git a/packages/tabs/lib/main.js b/packages/tabs/lib/main.js
new file mode 100644
index 000000000..dffae497c
--- /dev/null
+++ b/packages/tabs/lib/main.js
@@ -0,0 +1,137 @@
+const {CompositeDisposable, Disposable} = require('atom')
+const getIconServices = require('./get-icon-services')
+const layout = require('./layout')
+const TabBarView = require('./tab-bar-view.js')
+const MRUListView = require('./mru-list-view')
+const _ = require('underscore-plus')
+
+module.exports = {
+  activate () {
+    this.subscriptions = new CompositeDisposable()
+    layout.activate()
+    this.tabBarViews = []
+    this.mruListViews = []
+
+    const keyBindSource = 'tabs package'
+    const enableMruConfigKey = 'tabs.enableMruTabSwitching'
+
+    this.updateTraversalKeybinds = () => {
+      // We don't modify keybindings based on our setting if the user has already tweaked them.
+      let bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-tab'
+      })
+
+      if (bindings.length > 1 && bindings[0].source !== keyBindSource) {
+        return
+      }
+
+      bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-shift-tab'
+      })
+
+      if (bindings.length > 1 && bindings[0].source !== keyBindSource) {
+        return
+      }
+
+      if (atom.config.get(enableMruConfigKey)) {
+        atom.keymaps.removeBindingsFromSource(keyBindSource)
+      } else {
+        const disabledBindings = {
+          'body': {
+            'ctrl-tab': 'pane:show-next-item',
+            'ctrl-tab ^ctrl': 'unset!',
+            'ctrl-shift-tab': 'pane:show-previous-item',
+            'ctrl-shift-tab ^ctrl': 'unset!'
+          }
+        }
+        atom.keymaps.add(keyBindSource, disabledBindings, 0)
+      }
+    }
+
+    this.subscriptions.add(atom.config.observe(enableMruConfigKey, () => this.updateTraversalKeybinds()))
+    this.subscriptions.add(atom.keymaps.onDidLoadUserKeymap(() => this.updateTraversalKeybinds()))
+
+    // If the command bubbles up without being handled by a particular pane,
+    // close all tabs in all panes
+    this.subscriptions.add(atom.commands.add('atom-workspace', {
+      'tabs:close-all-tabs': () => {
+        // We loop backwards because the panes are
+        // removed from the array as we go
+        for (let i = this.tabBarViews.length - 1; i >= 0; i--) {
+          this.tabBarViews[i].closeAllTabs()
+        }
+      }
+    }))
+
+    const paneContainers = {
+      center: atom.workspace.getCenter(),
+      left: atom.workspace.getLeftDock(),
+      right: atom.workspace.getRightDock(),
+      bottom: atom.workspace.getBottomDock()
+    }
+
+    Object.keys(paneContainers).forEach(location => {
+      const container = paneContainers[location]
+      if (!container) {
+        return
+      }
+
+      this.subscriptions.add(container.observePanes(pane => {
+        const tabBarView = new TabBarView(pane, location)
+        const mruListView = new MRUListView()
+        mruListView.initialize(pane)
+
+        const paneElement = pane.getElement()
+        paneElement.insertBefore(tabBarView.element, paneElement.firstChild)
+
+        this.tabBarViews.push(tabBarView)
+        pane.onDidDestroy(() => _.remove(this.tabBarViews, tabBarView))
+        this.mruListViews.push(mruListView)
+        pane.onDidDestroy(() => _.remove(this.mruListViews, mruListView))
+      }))
+    })
+  },
+
+  deactivate () {
+    layout.deactivate()
+    this.subscriptions.dispose()
+    if (this.fileIconsDisposable != null) {
+      this.fileIconsDisposable.dispose()
+    }
+
+    for (let tabBarView of this.tabBarViews) {
+      tabBarView.destroy()
+    }
+    for (let mruListView of this.mruListViews) {
+      mruListView.destroy()
+    }
+  },
+
+  consumeElementIcons (service) {
+    getIconServices().setElementIcons(service)
+    this.updateFileIcons()
+    return new Disposable(() => {
+      getIconServices().resetElementIcons()
+      this.updateFileIcons()
+    })
+  },
+
+  consumeFileIcons (service) {
+    getIconServices().setFileIcons(service)
+    this.updateFileIcons()
+    return new Disposable(() => {
+      getIconServices().resetFileIcons()
+      this.updateFileIcons()
+    })
+  },
+
+  updateFileIcons () {
+    for (let tabBarView of this.tabBarViews) {
+      for (let tabView of tabBarView.getTabs()) {
+        tabView.updateIcon()
+      }
+    }
+  }
+}
diff --git a/packages/tabs/lib/mru-item-view.js b/packages/tabs/lib/mru-item-view.js
new file mode 100644
index 000000000..f636a5973
--- /dev/null
+++ b/packages/tabs/lib/mru-item-view.js
@@ -0,0 +1,70 @@
+'use babel'
+
+import getIconServices from './get-icon-services'
+import path from 'path'
+
+export default class MRUItemView {
+  initialize (listView, item) {
+    this.listView = listView
+    this.item = item
+
+    this.element = document.createElement('li')
+    this.element.itemViewData = this
+    this.element.classList.add('two-lines')
+
+    this.itemPath = null
+    if (item.getPath && typeof item.getPath === 'function') {
+      this.itemPath = item.getPath()
+    }
+
+    const repo = MRUItemView.repositoryForPath(this.itemPath)
+    if (repo != null) {
+      const statusIconDiv = document.createElement('div')
+      const status = repo.getCachedPathStatus(this.itemPath)
+      if (repo.isStatusNew(status)) {
+        statusIconDiv.className = 'status status-added icon icon-diff-added'
+        this.element.appendChild(statusIconDiv)
+      } else if (repo.isStatusModified(status)) {
+        statusIconDiv.className = 'status status-modified icon icon-diff-modified'
+        this.element.appendChild(statusIconDiv)
+      }
+    }
+
+    this.firstLineDiv = this.element.appendChild(document.createElement('div'))
+    this.firstLineDiv.classList.add('primary-line', 'file')
+    if (typeof item.getIconName === 'function') {
+      if (atom.config.get('tabs.showIcons')) this.firstLineDiv.classList.add('icon', 'icon-' + item.getIconName())
+    } else {
+      getIconServices().updateMRUIcon(this)
+    }
+    this.firstLineDiv.setAttribute('data-name', item.getTitle())
+    this.firstLineDiv.innerText = item.getTitle()
+
+    if (this.itemPath) {
+      this.firstLineDiv.setAttribute('data-path', this.itemPath)
+      const secondLineDiv = this.element.appendChild(document.createElement('div'))
+      secondLineDiv.classList.add('secondary-line', 'path', 'no-icon')
+      secondLineDiv.innerText = this.itemPath
+    }
+  }
+
+  select () {
+    this.element.classList.add('selected')
+  }
+
+  unselect () {
+    this.element.classList.remove('selected')
+  }
+
+  static repositoryForPath (filePath) {
+    if (filePath) {
+      const projectPaths = atom.project.getPaths()
+      for (let i = 0; i < projectPaths.length; i++) {
+        if (filePath === projectPaths[i] || filePath.startsWith(projectPaths[i] + path.sep)) {
+          return atom.project.getRepositories()[i]
+        }
+      }
+    }
+    return null
+  }
+}
diff --git a/packages/tabs/lib/mru-list-view.js b/packages/tabs/lib/mru-list-view.js
new file mode 100644
index 000000000..85c2ed3b9
--- /dev/null
+++ b/packages/tabs/lib/mru-list-view.js
@@ -0,0 +1,171 @@
+'use babel'
+
+import MRUItemView from './mru-item-view'
+import {CompositeDisposable} from 'atom'
+
+const displayListConfigKey = 'tabs.displayMruTabList'
+
+export default class MRUListView {
+  initialize (pane) {
+    this.ownerDiv = document.createElement('div')
+    this.element = document.createElement('ol')
+    this.ownerDiv.appendChild(this.element)
+    this.ownerDiv.classList.add('select-list', 'tabs-mru-switcher')
+
+    this.pane = pane
+    this.pendingShow = false
+    this.subscribe()
+    this.panel = atom.workspace.addModalPanel({
+      item: this.ownerDiv,
+      visible: false
+    })
+    this.element.classList.add('list-group')
+
+    this.displayMruList = atom.config.get(displayListConfigKey)
+    this.hideClickHandler = this.hide.bind(this)
+    this.preventPropagationClickHandler = this.preventPropagation.bind(this)
+  }
+
+  subscribe () {
+    this.subscriptions = new CompositeDisposable()
+
+    this.subscriptions.add(atom.config.observe(
+      displayListConfigKey,
+      (newValue) => (this.displayMruList = newValue)))
+
+    /* Check for existence of events. Allows package tests to pass until this
+    change hits stable. */
+    if (typeof this.pane.onChooseNextMRUItem === 'function') {
+      /* Because the chosen item is passed in the callback, both the
+      ChooseNext and ChooseLast events can call our our single choose
+      method. */
+      this.subscriptions.add(
+        this.pane.onChooseNextMRUItem((item) => this.choose(item)))
+      this.subscriptions.add(
+        this.pane.onChooseLastMRUItem((item) => this.choose(item)))
+
+      this.subscriptions.add(
+        this.pane.onDoneChoosingMRUItem(() => this.stopChoosing()))
+    }
+
+    this.subscriptions.add(
+      this.pane.onDidDestroy(() => this.destroy()))
+
+    this.subscriptions.add(
+      atom.commands.add('atom-workspace', {
+        'core:cancel': (event) => {
+          if (this.hide()) event.stopPropagation()
+        }
+      })
+    )
+  }
+
+  destroy () {
+    this.subscriptions.dispose()
+    this.panel.destroy()
+  }
+
+  choose (selectedItem) {
+    if (this.displayMruList) {
+      this.pendingShow = true
+      this.show(selectedItem)
+    }
+  }
+
+  stopChoosing () {
+    if (this.displayMruList) {
+      this.pendingShow = false
+      this.hide()
+    }
+  }
+
+  show (selectedItem) {
+    let selectedViewElement
+    if (!this.panel.visible) {
+      window.setTimeout(() => {
+        if (!this.pendingShow) return
+        selectedViewElement = this.buildListView(selectedItem)
+        this.panel.show()
+        this.addClickHandlers()
+        this.scrollToItemView(selectedViewElement)
+      }, 150)
+    } else {
+      selectedViewElement = this.updateSelectedItem(selectedItem)
+      this.scrollToItemView(selectedViewElement)
+    }
+  }
+
+  preventPropagation () {
+    event.stopPropagation()
+  }
+
+  addClickHandlers () {
+    document.body.addEventListener('click', this.hideClickHandler)
+    this.ownerDiv.addEventListener('click', this.preventPropagationClickHandler)
+  }
+
+  removeClickHandler () {
+    document.body.removeEventListener('click', this.hideClickHandler)
+    this.ownerDiv.removeEventListener('click', this.preventPropagationClickHandler)
+  }
+
+  hide () {
+    const willClose = this.panel.visible
+    if (willClose) {
+      this.removeClickHandler()
+      this.panel.hide()
+    }
+    return willClose
+  }
+
+  updateSelectedItem (selectedItem) {
+    let selectedView
+    for (let viewElement of this.element.children) {
+      if (viewElement.itemViewData.item === selectedItem) {
+        viewElement.itemViewData.select()
+        selectedView = viewElement
+      } else viewElement.itemViewData.unselect()
+    }
+    return selectedView
+  }
+
+  scrollToItemView (view) {
+    const desiredTop = view.offsetTop
+    const desiredBottom = desiredTop + view.offsetHeight
+
+    if (desiredTop < this.element.scrollTop) {
+      this.element.scrollTop = desiredTop
+    } else if (desiredBottom > this.element.scrollTop + this.element.clientHeight) {
+      this.element.scrollTop = desiredBottom - this.element.clientHeight
+    }
+  }
+
+  buildListView (selectedItem) {
+    /* Making this more efficient, and not simply building the view for the
+    entire stack every time it's shown, has significant complexity cost.
+    The pane system completely owns the MRU stack. Adding events and
+    handlers to incrementally update the UI here would mean two copies of
+    the stack to maintain and keep in sync. Let's take on that complexity
+    only if this exhibits real-world performance issues. */
+    while (this.element.firstChild) this.element.removeChild(this.element.firstChild)
+
+    let selectedViewElement
+    /* We're inserting each item at the top so we traverse the stack from
+    the bottom, resulting in the most recently used item at the top of the
+    UI. */
+    for (let i = this.pane.itemStack.length - 1; i >= 0; i--) {
+      let item = this.pane.itemStack[i]
+      let itemView = new MRUItemView()
+      itemView.initialize(this, item)
+      if (itemView.disposables) {
+        this.subscriptions.add(itemView.disposables)
+      }
+      this.element.appendChild(itemView.element)
+      if (item === selectedItem) {
+        itemView.select()
+        selectedViewElement = itemView
+      }
+    }
+    return selectedViewElement.element
+  }
+}
diff --git a/packages/tabs/lib/tab-bar-view.js b/packages/tabs/lib/tab-bar-view.js
new file mode 100644
index 000000000..55a4efa1c
--- /dev/null
+++ b/packages/tabs/lib/tab-bar-view.js
@@ -0,0 +1,766 @@
+let BrowserWindow = null; // Defer require until actually used
+const {ipcRenderer} = require('electron');
+
+const {CompositeDisposable} = require('atom');
+const TabView = require('./tab-view.js');
+
+class TabBarView {
+  constructor(pane, location) {
+    this.pane = pane;
+    this.location = location;
+    this.element = document.createElement("ul");
+    this.element.classList.add("list-inline");
+    this.element.classList.add("tab-bar");
+    this.element.classList.add("inset-panel");
+    this.element.setAttribute("is", "atom-tabs");
+    this.element.setAttribute("tabindex", -1);
+    this.element.setAttribute("location", this.location);
+
+    this.tabs = [];
+    this.tabsByElement = new WeakMap;
+    this.subscriptions = new CompositeDisposable;
+
+    this.paneElement = this.pane.getElement();
+
+    this.subscriptions.add(atom.commands.add(this.paneElement, {
+      "tabs:keep-pending-tab": () => this.terminatePendingStates(),
+      "tabs:close-tab": () => this.closeTab(this.getActiveTab()),
+      "tabs:close-other-tabs": () => this.closeOtherTabs(this.getActiveTab()),
+      "tabs:close-tabs-to-right": () => this.closeTabsToRight(this.getActiveTab()),
+      "tabs:close-tabs-to-left": () => this.closeTabsToLeft(this.getActiveTab()),
+      "tabs:close-saved-tabs": () => this.closeSavedTabs(),
+      "tabs:close-all-tabs": event => {
+        event.stopPropagation();
+        return this.closeAllTabs();
+      },
+      "tabs:open-in-new-window": () => this.openInNewWindow()
+    }));
+
+    const addElementCommands = commands => {
+      const commandsWithPropagationStopped = {};
+      Object.keys(commands).forEach(name => commandsWithPropagationStopped[name] = function(event) {
+        event.stopPropagation();
+        return commands[name]();
+      });
+
+      return this.subscriptions.add(atom.commands.add(this.element, commandsWithPropagationStopped));
+    };
+
+    addElementCommands({
+      "tabs:close-tab": () => this.closeTab(),
+      "tabs:close-other-tabs": () => this.closeOtherTabs(),
+      "tabs:close-tabs-to-right": () => this.closeTabsToRight(),
+      "tabs:close-tabs-to-left": () => this.closeTabsToLeft(),
+      "tabs:close-saved-tabs": () => this.closeSavedTabs(),
+      "tabs:close-all-tabs": () => this.closeAllTabs(),
+      "tabs:split-up": () => this.splitTab("splitUp"),
+      "tabs:split-down": () => this.splitTab("splitDown"),
+      "tabs:split-left": () => this.splitTab("splitLeft"),
+      "tabs:split-right": () => this.splitTab("splitRight")
+    });
+
+    this.element.addEventListener("mouseenter", this.onMouseEnter.bind(this));
+    this.element.addEventListener("mouseleave", this.onMouseLeave.bind(this));
+    this.element.addEventListener("mousewheel", this.onMouseWheel.bind(this));
+    this.element.addEventListener("dragstart", this.onDragStart.bind(this));
+    this.element.addEventListener("dragend", this.onDragEnd.bind(this));
+    this.element.addEventListener("dragleave", this.onDragLeave.bind(this));
+    this.element.addEventListener("dragover", this.onDragOver.bind(this));
+    this.element.addEventListener("drop", this.onDrop.bind(this));
+
+    // Toggle the tab bar when a tab is dragged over the pane with alwaysShowTabBar = false
+    this.paneElement.addEventListener('dragenter', this.onPaneDragEnter.bind(this));
+    this.paneElement.addEventListener('dragleave', this.onPaneDragLeave.bind(this));
+
+    this.paneContainer = this.pane.getContainer();
+    for (let item of Array.from(this.pane.getItems())) { this.addTabForItem(item); }
+
+    this.subscriptions.add(this.pane.onDidDestroy(() => {
+      return this.destroy();
+    }));
+
+    this.subscriptions.add(this.pane.onDidAddItem(({item, index}) => {
+      return this.addTabForItem(item, index);
+    }));
+
+    this.subscriptions.add(this.pane.onDidMoveItem(({item, newIndex}) => {
+      return this.moveItemTabToIndex(item, newIndex);
+    }));
+
+    this.subscriptions.add(this.pane.onDidRemoveItem(({item}) => {
+      return this.removeTabForItem(item);
+    }));
+
+    this.subscriptions.add(this.pane.onDidChangeActiveItem(item => {
+      return this.updateActiveTab();
+    }));
+
+    this.subscriptions.add(atom.config.observe('tabs.tabScrolling', value => this.updateTabScrolling(value)));
+    this.subscriptions.add(atom.config.observe('tabs.tabScrollingThreshold', value => this.updateTabScrollingThreshold(value)));
+    this.subscriptions.add(atom.config.observe('tabs.alwaysShowTabBar', () => this.updateTabBarVisibility()));
+
+    this.updateActiveTab();
+
+    this.element.addEventListener("mousedown", this.onMouseDown.bind(this));
+    this.element.addEventListener("click", this.onClick.bind(this));
+    this.element.addEventListener("auxclick", this.onClick.bind(this));
+    this.element.addEventListener("dblclick", this.onDoubleClick.bind(this));
+
+    this.onDropOnOtherWindow = this.onDropOnOtherWindow.bind(this);
+    ipcRenderer.on('tab:dropped', this.onDropOnOtherWindow);
+
+  }
+
+  destroy() {
+    ipcRenderer.removeListener('tab:dropped', this.onDropOnOtherWindow);
+    this.subscriptions.dispose();
+    return this.element.remove();
+  }
+
+  terminatePendingStates() {
+    for (let tab of this.getTabs()) {
+      if (typeof tab.terminatePendingState === "function") {
+        tab.terminatePendingState();
+      }
+    }
+  }
+
+  addTabForItem(item, index) {
+    let tabView = new TabView({
+      item,
+      pane: this.pane,
+      tabs: this.tabs,
+      didClickCloseIcon: () => {
+        this.closeTab(tabView);
+      },
+      location: this.location
+    });
+    if (this.isItemMovingBetweenPanes) {
+      tabView.terminatePendingState();
+    }
+
+    this.tabsByElement.set(tabView.element, tabView);
+    this.insertTabAtIndex(tabView, index);
+
+    if (atom.config.get('tabs.addNewTabsAtEnd')) {
+      if (!this.isItemMovingBetweenPanes) {
+        return this.pane.moveItem(item, this.pane.getItems().length - 1);
+      }
+    }
+  }
+
+  moveItemTabToIndex(item, index) {
+    const tabIndex = this.tabs.findIndex(t => t.item === item);
+    if (tabIndex !== -1) {
+      const tab = this.tabs[tabIndex];
+      tab.element.remove();
+      this.tabs.splice(tabIndex, 1);
+      return this.insertTabAtIndex(tab, index);
+    }
+  }
+
+  insertTabAtIndex(tab, index) {
+    let followingTab;
+    if (index != null) {
+      followingTab = this.tabs[index];
+    }
+    if (followingTab) {
+      this.element.insertBefore(tab.element, followingTab.element);
+      this.tabs.splice(index, 0, tab);
+    } else {
+      this.element.appendChild(tab.element);
+      this.tabs.push(tab);
+    }
+
+    tab.updateTitle();
+    return this.updateTabBarVisibility();
+  }
+
+  removeTabForItem(item) {
+    let tab;
+    const tabIndex = this.tabs.findIndex(t => t.item === item);
+    if (tabIndex !== -1) {
+      tab = this.tabs[tabIndex];
+      this.tabs.splice(tabIndex, 1);
+      this.tabsByElement.delete(tab);
+      tab.destroy();
+    }
+    for (tab of this.getTabs()) {
+      tab.updateTitle();
+    }
+
+    return this.updateTabBarVisibility();
+  }
+
+  updateTabBarVisibility() {
+    // Show tab bar if the setting is true or there is more than one tab
+    if (atom.config.get('tabs.alwaysShowTabBar') || (this.pane.getItems().length > 1)) {
+      return this.element.classList.remove('hidden');
+    } else {
+      return this.element.classList.add('hidden');
+    }
+  }
+
+  getTabs() {
+    return this.tabs.slice();
+  }
+
+  tabAtIndex(index) {
+    return this.tabs[index];
+  }
+
+  tabForItem(item) {
+    return this.tabs.find(t => t.item === item);
+  }
+
+  setActiveTab(tabView) {
+    if ((tabView != null) && (tabView !== this.activeTab)) {
+      if (this.activeTab != null) {
+        this.activeTab.element.classList.remove('active');
+      }
+      this.activeTab = tabView;
+      this.activeTab.element.classList.add('active');
+      return this.activeTab.element.scrollIntoView(false);
+    }
+  }
+
+  getActiveTab() {
+    return this.tabForItem(this.pane.getActiveItem());
+  }
+
+  updateActiveTab() {
+    return this.setActiveTab(this.tabForItem(this.pane.getActiveItem()));
+  }
+
+  closeTab(tab) {
+    if (tab == null) { tab = this.rightClickedTab; }
+    if (tab != null) { return this.pane.destroyItem(tab.item); }
+  }
+
+  openInNewWindow(tab) {
+    let itemURI;
+    if (tab == null) { tab = this.rightClickedTab; }
+    const item = tab != null ? tab.item : undefined;
+    if (item == null) { return; }
+    if (typeof item.getURI === 'function') {
+      itemURI = item.getURI();
+    } else if (typeof item.getPath === 'function') {
+      itemURI = item.getPath();
+    } else if (typeof item.getUri === 'function') {
+      itemURI = item.getUri();
+    }
+    if (itemURI == null) { return; }
+    this.closeTab(tab);
+    for (tab of this.getTabs()) { tab.element.style.maxWidth = ''; }
+    const pathsToOpen = [atom.project.getPaths(), itemURI].reduce(((a, b) => a.concat(b)), []);
+    return atom.open({pathsToOpen, newWindow: true, devMode: atom.devMode, safeMode: atom.safeMode});
+  }
+
+  splitTab(fn) {
+    let item;
+    if (item = this.rightClickedTab != null ? this.rightClickedTab.item : undefined) {
+      let copiedItem;
+      if (copiedItem = typeof item.copy === 'function' ? item.copy() : undefined) {
+        return this.pane[fn]({items: [copiedItem]});
+      }
+    }
+  }
+
+  closeOtherTabs(active) {
+    const tabs = this.getTabs();
+    if (active == null) { active = this.rightClickedTab; }
+    if (active == null) { return; }
+    return tabs.filter((tab) => tab !== active).map((tab) => this.closeTab(tab));
+  }
+
+  closeTabsToRight(active) {
+    const tabs = this.getTabs();
+    if (active == null) { active = this.rightClickedTab; }
+    const index = tabs.indexOf(active);
+    if (index === -1) { return; }
+    return (() => {
+      const result = [];
+      for (let i = 0; i < tabs.length; i++) {
+        const tab = tabs[i];
+        if (i > index) {
+          result.push(this.closeTab(tab));
+        }
+      }
+      return result;
+    })();
+  }
+
+  closeTabsToLeft(active) {
+    const tabs = this.getTabs();
+    if (active == null) { active = this.rightClickedTab; }
+    const index = tabs.indexOf(active);
+    if (index === -1) { return; }
+    return (() => {
+      const result = [];
+      for (let i = 0; i < tabs.length; i++) {
+        const tab = tabs[i];
+        if (i < index) {
+          result.push(this.closeTab(tab));
+        }
+      }
+      return result;
+    })();
+  }
+
+  closeSavedTabs() {
+    return (() => {
+      const result = [];
+      for (let tab of this.getTabs()) {
+        if (!(typeof tab.item.isModified === 'function' ? tab.item.isModified() : undefined)) { result.push(this.closeTab(tab)); } else {
+          result.push(undefined);
+        }
+      }
+      return result;
+    })();
+  }
+
+  closeAllTabs() {
+    return this.getTabs().map((tab) => this.closeTab(tab));
+  }
+
+  getWindowId() {
+    return this.windowId != null ? this.windowId : (this.windowId = atom.getCurrentWindow().id);
+  }
+
+  onDragStart(event) {
+    let itemURI;
+    this.draggedTab = this.tabForElement(event.target);
+    if (!this.draggedTab) { return; }
+    this.lastDropTargetIndex = null;
+
+    event.dataTransfer.setData('atom-tab-event', 'true');
+
+    this.draggedTab.element.classList.add('is-dragging');
+    this.draggedTab.destroyTooltip();
+
+    const tabIndex = this.tabs.indexOf(this.draggedTab);
+    event.dataTransfer.setData('sortable-index', tabIndex);
+
+    const paneIndex = this.paneContainer.getPanes().indexOf(this.pane);
+    event.dataTransfer.setData('from-pane-index', paneIndex);
+    event.dataTransfer.setData('from-pane-id', this.pane.id);
+    event.dataTransfer.setData('from-window-id', this.getWindowId());
+
+    const item = this.pane.getItems()[this.tabs.indexOf(this.draggedTab)];
+    if (item == null) { return; }
+
+    if (typeof item.getURI === 'function') {
+      let left;
+      itemURI = (left = item.getURI()) != null ? left : '';
+    } else if (typeof item.getPath === 'function') {
+      let left1;
+      itemURI = (left1 = item.getPath()) != null ? left1 : '';
+    } else if (typeof item.getUri === 'function') {
+      let left2;
+      itemURI = (left2 = item.getUri()) != null ? left2 : '';
+    }
+
+    if (typeof item.getAllowedLocations === 'function') {
+      for (let location of item.getAllowedLocations()) {
+        event.dataTransfer.setData(`allowed-location-${location}`, 'true');
+      }
+    } else {
+      event.dataTransfer.setData('allow-all-locations', 'true');
+    }
+
+    if (itemURI != null) {
+      event.dataTransfer.setData('text/plain', itemURI);
+
+      if (process.platform === 'darwin') { // see #69
+        if (!this.uriHasProtocol(itemURI)) { itemURI = `file://${itemURI}`; }
+        event.dataTransfer.setData('text/uri-list', itemURI);
+      }
+
+      if ((typeof item.isModified === 'function' ? item.isModified() : undefined) && (item.getText != null)) {
+        event.dataTransfer.setData('has-unsaved-changes', 'true');
+        return event.dataTransfer.setData('modified-text', item.getText());
+      }
+    }
+  }
+
+  uriHasProtocol(uri) {
+    try {
+      return (require('url').parse(uri).protocol != null);
+    } catch (error) {
+      return false;
+    }
+  }
+
+  onDragLeave(event) {
+    // Do not do anything unless the drag goes outside the tab bar
+    if (!event.currentTarget.contains(event.relatedTarget)) {
+      this.removePlaceholder();
+      this.lastDropTargetIndex = null;
+      return this.getTabs().map((tab) => (tab.element.style.maxWidth = ''));
+    }
+  }
+
+  onDragEnd(event) {
+    if (!this.tabForElement(event.target)) { return; }
+
+    return this.clearDropTarget();
+  }
+
+  onDragOver(event) {
+    let tab;
+    if (!this.isAtomTabEvent(event)) { return; }
+    if (!this.itemIsAllowed(event, this.location)) { return; }
+
+    event.preventDefault();
+    event.stopPropagation();
+
+    const newDropTargetIndex = this.getDropTargetIndex(event);
+    if (newDropTargetIndex == null) { return; }
+    if (this.lastDropTargetIndex === newDropTargetIndex) { return; }
+    this.lastDropTargetIndex = newDropTargetIndex;
+
+    this.removeDropTargetClasses();
+
+    const tabs = this.getTabs();
+    const placeholder = this.getPlaceholder();
+    if (placeholder == null) { return; }
+
+    if (newDropTargetIndex < tabs.length) {
+      tab = tabs[newDropTargetIndex];
+      tab.element.classList.add('is-drop-target');
+      return tab.element.parentElement.insertBefore(placeholder, tab.element);
+    } else {
+      if (tab = tabs[newDropTargetIndex - 1]) {
+        let sibling;
+        tab.element.classList.add('drop-target-is-after');
+        if ((sibling = tab.element.nextSibling)) {
+          return tab.element.parentElement.insertBefore(placeholder, sibling);
+        } else {
+          return tab.element.parentElement.appendChild(placeholder);
+        }
+      }
+    }
+  }
+
+  onDropOnOtherWindow(event, fromPaneId, fromItemIndex) {
+    if (this.pane.id === fromPaneId) {
+      let itemToRemove;
+      if (itemToRemove = this.pane.getItems()[fromItemIndex]) {
+        this.pane.destroyItem(itemToRemove);
+      }
+    }
+
+    return this.clearDropTarget();
+  }
+
+  clearDropTarget() {
+    if (this.draggedTab != null) {
+      this.draggedTab.element.classList.remove('is-dragging');
+    }
+    if (this.draggedTab != null) {
+      this.draggedTab.updateTooltip();
+    }
+    this.draggedTab = null;
+    this.removeDropTargetClasses();
+    return this.removePlaceholder();
+  }
+
+  onDrop(event) {
+    if (!this.isAtomTabEvent(event)) {
+      return;
+    }
+
+    event.preventDefault();
+
+    const fromWindowId  = parseInt(event.dataTransfer.getData('from-window-id'));
+    const fromPaneId    = parseInt(event.dataTransfer.getData('from-pane-id'));
+    const fromIndex     = parseInt(event.dataTransfer.getData('sortable-index'));
+    const fromPaneIndex = parseInt(event.dataTransfer.getData('from-pane-index'));
+
+    const hasUnsavedChanges = event.dataTransfer.getData('has-unsaved-changes') === 'true';
+    const modifiedText = event.dataTransfer.getData('modified-text');
+
+    const toIndex = this.getDropTargetIndex(event);
+    const toPane = this.pane;
+
+    this.clearDropTarget();
+
+    if (!this.itemIsAllowed(event, this.location)) { return; }
+
+    if (fromWindowId === this.getWindowId()) {
+      let fromPane = this.paneContainer.getPanes()[fromPaneIndex];
+      if ((fromPane != null ? fromPane.id : undefined) !== fromPaneId) {
+        // If dragging from a different pane container, we have to be more
+        // exhaustive in our search.
+        fromPane = Array.from(document.querySelectorAll('atom-pane'))
+          .map(paneEl => paneEl.model)
+          .find(pane => pane.id === fromPaneId);
+      }
+      const item = fromPane.getItems()[fromIndex];
+      if (item != null) { return this.moveItemBetweenPanes(fromPane, fromIndex, toPane, toIndex, item); }
+    } else {
+      const droppedURI = event.dataTransfer.getData('text/plain');
+      atom.workspace.open(droppedURI).then(item => {
+        // Move the item from the pane it was opened on to the target pane
+        // where it was dropped onto
+        const activePane = atom.workspace.getActivePane();
+        const activeItemIndex = activePane.getItems().indexOf(item);
+        this.moveItemBetweenPanes(activePane, activeItemIndex, toPane, toIndex, item);
+        if (hasUnsavedChanges) { if (typeof item.setText === 'function') {
+          item.setText(modifiedText);
+        } }
+
+        if (!isNaN(fromWindowId)) {
+          // Let the window where the drag started know that the tab was dropped
+          const browserWindow = this.browserWindowForId(fromWindowId);
+          return (browserWindow != null ? browserWindow.webContents.send('tab:dropped', fromPaneId, fromIndex) : undefined);
+        }
+      });
+
+      return atom.focus();
+    }
+  }
+
+  // Show the tab bar when a tab is being dragged in this pane when alwaysShowTabBar = false
+  onPaneDragEnter(event) {
+    if (!this.isAtomTabEvent(event)) {
+      return;
+    }
+    if (!this.itemIsAllowed(event, this.location)) {
+      return;
+    }
+    if ((this.pane.getItems().length > 1) || atom.config.get('tabs.alwaysShowTabBar')) {
+      return;
+    }
+    if (this.paneElement.contains(event.relatedTarget)) {
+      return this.element.classList.remove('hidden');
+    }
+  }
+
+  // Hide the tab bar when the dragged tab leaves this pane when alwaysShowTabBar = false
+  onPaneDragLeave(event) {
+    if (!this.isAtomTabEvent(event)) {
+      return;
+    }
+    if (!this.itemIsAllowed(event, this.location)) {
+      return;
+    }
+    if ((this.pane.getItems().length > 1) || atom.config.get('tabs.alwaysShowTabBar')) {
+      return;
+    }
+    if (!this.paneElement.contains(event.relatedTarget)) {
+      return this.element.classList.add('hidden');
+    }
+  }
+
+  onMouseWheel(event) {
+    if (event.shiftKey || !this.tabScrolling) { return; }
+
+    if (this.wheelDelta == null) { this.wheelDelta = 0; }
+    this.wheelDelta += event.wheelDeltaY;
+
+    if (this.wheelDelta <= -this.tabScrollingThreshold) {
+      this.wheelDelta = 0;
+      return this.pane.activateNextItem();
+    } else if (this.wheelDelta >= this.tabScrollingThreshold) {
+      this.wheelDelta = 0;
+      return this.pane.activatePreviousItem();
+    }
+  }
+
+  onMouseDown(event) {
+    if (!this.pane.isDestroyed()) { this.pane.activate(); }
+
+    const tab = this.tabForElement(event.target);
+    if (!tab) { return; }
+
+    if ((event.button === 2) || ((event.button === 0) && (event.ctrlKey === true))) {
+      if (this.rightClickedTab) {
+        this.rightClickedTab.element.classList.remove('right-clicked');
+      }
+      this.rightClickedTab = tab;
+      this.rightClickedTab.element.classList.add('right-clicked');
+      return event.preventDefault();
+    } else if (event.button === 1) {
+      // This prevents Chromium from activating "scroll mode" when
+      // middle-clicking while some tabs are off-screen.
+      return event.preventDefault();
+    }
+  }
+
+  onClick(event) {
+    const tab = this.tabForElement(event.target);
+    if (!tab) {
+      return;
+    }
+
+    event.preventDefault();
+    if ((event.button === 2) || ((event.button === 0) && (event.ctrlKey === true))) {
+      // Bail out early when receiving this event, because we have already
+      // handled it in the mousedown handler.
+      return;
+    } else if ((event.button === 0) && !event.target.classList.contains('close-icon')) {
+      return this.pane.activateItem(tab.item);
+    } else if (event.button === 1) {
+      return this.pane.destroyItem(tab.item);
+    }
+  }
+
+  onDoubleClick(event) {
+    let tab = this.tabForElement(event.target);
+    if (tab) {
+      return (typeof tab.item.terminatePendingState === 'function' ? tab.item.terminatePendingState() : undefined);
+    } else if (event.target === this.element) {
+      atom.commands.dispatch(this.element, 'application:new-file');
+      return event.preventDefault();
+    }
+  }
+
+  updateTabScrollingThreshold(value) {
+    return this.tabScrollingThreshold = value;
+  }
+
+  updateTabScrolling(value) {
+    if (value === 'platform') {
+      return this.tabScrolling = (process.platform === 'linux');
+    } else {
+      return this.tabScrolling = value;
+    }
+  }
+
+  browserWindowForId(id) {
+    if (BrowserWindow == null) { ({
+      BrowserWindow
+    } = require('electron').remote); }
+
+    return BrowserWindow.fromId(id);
+  }
+
+  moveItemBetweenPanes(fromPane, fromIndex, toPane, toIndex, item) {
+    try {
+      if (toPane === fromPane) {
+        if (fromIndex < toIndex) { toIndex--; }
+        toPane.moveItem(item, toIndex);
+      } else {
+        this.isItemMovingBetweenPanes = true;
+        fromPane.moveItemToPane(item, toPane, toIndex--);
+      }
+      toPane.activateItem(item);
+      return toPane.activate();
+    } finally {
+      this.isItemMovingBetweenPanes = false;
+    }
+  }
+
+  removeDropTargetClasses() {
+    let dropTarget;
+    const workspaceElement = atom.workspace.getElement();
+    for (dropTarget of workspaceElement.querySelectorAll('.tab-bar .is-drop-target')) {
+      dropTarget.classList.remove('is-drop-target');
+    }
+
+    return (() => {
+      const result = [];
+      for (dropTarget of workspaceElement.querySelectorAll('.tab-bar .drop-target-is-after')) {
+        result.push(dropTarget.classList.remove('drop-target-is-after'));
+      }
+      return result;
+    })();
+  }
+
+  getDropTargetIndex(event) {
+    const { target } = event;
+
+    if (this.isPlaceholder(target)) {
+      return;
+    }
+
+    const tabs = this.getTabs();
+    let tab = this.tabForElement(target);
+    if (tab == null) {
+      tab = tabs[tabs.length - 1];
+    }
+
+    if (tab == null) {
+      return 0;
+    }
+
+    const { left, width } = tab.element.getBoundingClientRect();
+    const elementCenter = left + (width / 2);
+    const elementIndex = tabs.indexOf(tab);
+
+    if (event.pageX < elementCenter) {
+      return elementIndex;
+    } else {
+      return elementIndex + 1;
+    }
+  }
+
+  getPlaceholder() {
+    if (this.placeholderEl != null) {
+      return this.placeholderEl;
+    }
+
+    this.placeholderEl = document.createElement("li");
+    this.placeholderEl.classList.add("placeholder");
+    return this.placeholderEl;
+  }
+
+  removePlaceholder() {
+    if (this.placeholderEl != null) {
+      this.placeholderEl.remove();
+    }
+    return this.placeholderEl = null;
+  }
+
+  isPlaceholder(element) {
+    return element.classList.contains('placeholder');
+  }
+
+  onMouseEnter() {
+    for (let tab of this.getTabs()) {
+      const { width } = tab.element.getBoundingClientRect();
+      tab.element.style.maxWidth = width.toFixed(2) + 'px';
+    }
+  }
+
+  onMouseLeave() {
+    for (let tab of this.getTabs()) {
+      tab.element.style.maxWidth = '';
+    }
+  }
+
+  tabForElement(element) {
+    let currentElement = element;
+    while (currentElement != null) {
+      if (this.tabsByElement.get(currentElement)) {
+        return this.tabsByElement.get(currentElement);
+      } else {
+        currentElement = currentElement.parentElement;
+      }
+    }
+  }
+
+  isAtomTabEvent(event) {
+    for (let item of event.dataTransfer.items) {
+      if (item.type === 'atom-tab-event') {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  itemIsAllowed(event, location) {
+    for (let item of event.dataTransfer.items) {
+      if ((item.type === 'allow-all-locations') || (item.type === `allowed-location-${location}`)) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+}
+
+module.exports = TabBarView;
diff --git a/packages/tabs/lib/tab-view.js b/packages/tabs/lib/tab-view.js
new file mode 100644
index 000000000..4f4451a80
--- /dev/null
+++ b/packages/tabs/lib/tab-view.js
@@ -0,0 +1,401 @@
+const path = require('path');
+const {Disposable, CompositeDisposable} = require('atom');
+const getIconServices = require('./get-icon-services');
+
+const layout = require('./layout');
+
+class TabView {
+  constructor({item, pane, didClickCloseIcon, tabs, location}) {
+    this.item = item;
+    this.pane = pane;
+    this.tabs = tabs;
+    if (typeof this.item.getPath === 'function') {
+      this.path = this.item.getPath();
+    }
+
+    this.element = document.createElement('li');
+    this.element.setAttribute('is', 'tabs-tab');
+    if (['TextEditor', 'TestView'].indexOf(this.item.constructor.name) > -1) {
+      this.element.classList.add('texteditor');
+    }
+    this.element.classList.add('tab', 'sortable');
+
+    this.itemTitle = document.createElement('div');
+    this.itemTitle.classList.add('title');
+    this.element.appendChild(this.itemTitle);
+
+    if ((location === 'center') || !(typeof this.item.isPermanentDockItem === 'function' ? this.item.isPermanentDockItem() : undefined)) {
+      const closeIcon = document.createElement('div');
+      closeIcon.classList.add('close-icon');
+      closeIcon.onclick = didClickCloseIcon;
+      this.element.appendChild(closeIcon);
+    }
+
+    this.subscriptions = new CompositeDisposable();
+
+    this.handleEvents();
+    this.updateDataAttributes();
+    this.updateTitle();
+    this.updateIcon();
+    this.updateModifiedStatus();
+    this.setupTooltip();
+
+    if (this.isItemPending()) {
+      this.itemTitle.classList.add('temp');
+      this.element.classList.add('pending-tab');
+    }
+
+    this.element.ondrag = e => layout.drag(e);
+    this.element.ondragend = e => layout.end(e);
+
+    this.element.pane = this.pane;
+    this.element.item = this.item;
+    this.element.itemTitle = this.itemTitle;
+    this.element.path = this.path;
+  }
+
+  handleEvents() {
+    const titleChangedHandler = () => {
+      return this.updateTitle();
+    };
+
+    this.subscriptions.add(this.pane.onDidDestroy(() => this.destroy()));
+    this.subscriptions.add(this.pane.onItemDidTerminatePendingState(item => {
+      if (item === this.item) { return this.clearPending(); }
+    })
+    );
+
+    if (typeof this.item.onDidChangeTitle === 'function') {
+      const onDidChangeTitleDisposable = this.item.onDidChangeTitle(titleChangedHandler);
+      if (Disposable.isDisposable(onDidChangeTitleDisposable)) {
+        this.subscriptions.add(onDidChangeTitleDisposable);
+      } else {
+        console.warn("::onDidChangeTitle does not return a valid Disposable!", this.item);
+      }
+    } else if (typeof this.item.on === 'function') {
+      //TODO Remove once old events are no longer supported
+      this.item.on('title-changed', titleChangedHandler);
+      this.subscriptions.add({dispose: () => {
+        return (typeof this.item.off === 'function' ? this.item.off('title-changed', titleChangedHandler) : undefined);
+      }
+      });
+    }
+
+    const pathChangedHandler = path1 => {
+      this.path = path1;
+      this.updateDataAttributes();
+      this.updateTitle();
+      this.updateTooltip();
+      return this.updateIcon();
+    };
+
+    if (typeof this.item.onDidChangePath === 'function') {
+      const onDidChangePathDisposable = this.item.onDidChangePath(pathChangedHandler);
+      if (Disposable.isDisposable(onDidChangePathDisposable)) {
+        this.subscriptions.add(onDidChangePathDisposable);
+      } else {
+        console.warn("::onDidChangePath does not return a valid Disposable!", this.item);
+      }
+    } else if (typeof this.item.on === 'function') {
+      //TODO Remove once old events are no longer supported
+      this.item.on('path-changed', pathChangedHandler);
+      this.subscriptions.add({dispose: () => {
+        return (typeof this.item.off === 'function' ? this.item.off('path-changed', pathChangedHandler) : undefined);
+      }
+      });
+    }
+
+    const iconChangedHandler = () => {
+      return this.updateIcon();
+    };
+
+    this.subscriptions.add(getIconServices().onDidChange(() => this.updateIcon()));
+
+    if (typeof this.item.onDidChangeIcon === 'function') {
+      const onDidChangeIconDisposable = typeof this.item.onDidChangeIcon === 'function' ? this.item.onDidChangeIcon(() => {
+        return this.updateIcon();
+      }) : undefined;
+      if (Disposable.isDisposable(onDidChangeIconDisposable)) {
+        this.subscriptions.add(onDidChangeIconDisposable);
+      } else {
+        console.warn("::onDidChangeIcon does not return a valid Disposable!", this.item);
+      }
+    } else if (typeof this.item.on === 'function') {
+      //TODO Remove once old events are no longer supported
+      this.item.on('icon-changed', iconChangedHandler);
+      this.subscriptions.add({dispose: () => {
+        return (typeof this.item.off === 'function' ? this.item.off('icon-changed', iconChangedHandler) : undefined);
+      }
+      });
+    }
+
+    const modifiedHandler = () => {
+      return this.updateModifiedStatus();
+    };
+
+    if (typeof this.item.onDidChangeModified === 'function') {
+      const onDidChangeModifiedDisposable = this.item.onDidChangeModified(modifiedHandler);
+      if (Disposable.isDisposable(onDidChangeModifiedDisposable)) {
+        this.subscriptions.add(onDidChangeModifiedDisposable);
+      } else {
+        console.warn("::onDidChangeModified does not return a valid Disposable!", this.item);
+      }
+    } else if (typeof this.item.on === 'function') {
+      //TODO Remove once old events are no longer supported
+      this.item.on('modified-status-changed', modifiedHandler);
+      this.subscriptions.add({dispose: () => {
+        return (typeof this.item.off === 'function' ? this.item.off('modified-status-changed', modifiedHandler) : undefined);
+      }
+      });
+    }
+
+    if (typeof this.item.onDidSave === 'function') {
+      const onDidSaveDisposable = this.item.onDidSave(event => {
+        this.terminatePendingState();
+        if (event.path !== this.path) {
+          this.path = event.path;
+          if (atom.config.get('tabs.enableVcsColoring')) { return this.setupVcsStatus(); }
+        }
+      });
+
+      if (Disposable.isDisposable(onDidSaveDisposable)) {
+        this.subscriptions.add(onDidSaveDisposable);
+      } else {
+        console.warn("::onDidSave does not return a valid Disposable!", this.item);
+      }
+    }
+    this.subscriptions.add(atom.config.observe('tabs.showIcons', () => {
+      return this.updateIconVisibility();
+    })
+    );
+
+    return this.subscriptions.add(atom.config.observe('tabs.enableVcsColoring', isEnabled => {
+      if (isEnabled && (this.path != null)) { return this.setupVcsStatus(); } else { return this.unsetVcsStatus(); }
+    })
+    );
+  }
+
+  setupTooltip() {
+    // Defer creating the tooltip until the tab is moused over
+    const onMouseEnter = () => {
+      this.mouseEnterSubscription.dispose();
+      this.hasBeenMousedOver = true;
+      this.updateTooltip();
+
+      // Trigger again so the tooltip shows
+      return this.element.dispatchEvent(new CustomEvent('mouseenter', {bubbles: true}));
+    };
+
+    this.mouseEnterSubscription = { dispose: () => {
+      this.element.removeEventListener('mouseenter', onMouseEnter);
+      return this.mouseEnterSubscription = null;
+    }
+  };
+
+    return this.element.addEventListener('mouseenter', onMouseEnter);
+  }
+
+  updateTooltip() {
+    if (!this.hasBeenMousedOver) { return; }
+
+    this.destroyTooltip();
+
+    if (this.path) {
+      return this.tooltip = atom.tooltips.add(this.element, {
+        title: this.path,
+        html: false,
+        delay: {
+          show: 1000,
+          hide: 100
+        },
+        placement: 'bottom'
+      }
+      );
+    }
+  }
+
+  destroyTooltip() {
+    if (!this.hasBeenMousedOver) { return; }
+    return (this.tooltip != null ? this.tooltip.dispose() : undefined);
+  }
+
+  destroy() {
+    if (this.subscriptions != null) {
+      this.subscriptions.dispose();
+    }
+    if (this.mouseEnterSubscription != null) {
+      this.mouseEnterSubscription.dispose();
+    }
+    if (this.repoSubscriptions != null) {
+      this.repoSubscriptions.dispose();
+    }
+    this.destroyTooltip();
+    return this.element.remove();
+  }
+
+  updateDataAttributes() {
+    let itemClass;
+    if (this.path) {
+      this.itemTitle.dataset.name = path.basename(this.path);
+      this.itemTitle.dataset.path = this.path;
+    } else {
+      delete this.itemTitle.dataset.name;
+      delete this.itemTitle.dataset.path;
+    }
+
+    if ((itemClass = this.item.constructor != null ? this.item.constructor.name : undefined)) {
+      return this.element.dataset.type = itemClass;
+    } else {
+      return delete this.element.dataset.type;
+    }
+  }
+
+  updateTitle(param) {
+    let title;
+    if (param == null) { param = {}; }
+    let {updateSiblings, useLongTitle} = param;
+    if (this.updatingTitle) { return; }
+    this.updatingTitle = true;
+
+    if (updateSiblings === false) {
+      title = this.item.getTitle();
+      if (useLongTitle) { let left;
+      title = (left = (typeof this.item.getLongTitle === 'function' ? this.item.getLongTitle() : undefined)) != null ? left : title; }
+      this.itemTitle.textContent = title;
+    } else {
+      title = this.item.getTitle();
+      useLongTitle = false;
+      for (let tab of this.tabs) {
+        if (tab !== this) {
+          if (tab.item.getTitle() === title) {
+            tab.updateTitle({updateSiblings: false, useLongTitle: true});
+            useLongTitle = true;
+          }
+        }
+      }
+      if (useLongTitle) { let left1;
+      title = (left1 = (typeof this.item.getLongTitle === 'function' ? this.item.getLongTitle() : undefined)) != null ? left1 : title; }
+
+      this.itemTitle.textContent = title;
+    }
+
+    return this.updatingTitle = false;
+  }
+
+  updateIcon() {
+    return getIconServices().updateTabIcon(this);
+  }
+
+  isItemPending() {
+    if (this.pane.getPendingItem != null) {
+      return this.pane.getPendingItem() === this.item;
+    } else if (this.item.isPending != null) {
+      return this.item.isPending();
+    }
+  }
+
+  terminatePendingState() {
+    if (this.pane.clearPendingItem != null) {
+      if (this.pane.getPendingItem() === this.item) { return this.pane.clearPendingItem(); }
+    } else if (this.item.terminatePendingState != null) {
+      return this.item.terminatePendingState();
+    }
+  }
+
+  clearPending() {
+    this.itemTitle.classList.remove('temp');
+    return this.element.classList.remove('pending-tab');
+  }
+
+  updateIconVisibility() {
+    if (atom.config.get('tabs.showIcons')) {
+      return this.itemTitle.classList.remove('hide-icon');
+    } else {
+      return this.itemTitle.classList.add('hide-icon');
+    }
+  }
+
+  updateModifiedStatus() {
+    if (typeof this.item.isModified === 'function' ? this.item.isModified() : undefined) {
+      if (!this.isModified) { this.element.classList.add('modified'); }
+      return this.isModified = true;
+    } else {
+      if (this.isModified) { this.element.classList.remove('modified'); }
+      return this.isModified = false;
+    }
+  }
+
+  setupVcsStatus() {
+    if (this.path == null) { return; }
+    return this.repoForPath(this.path).then(repo => {
+      this.subscribeToRepo(repo);
+      return this.updateVcsStatus(repo);
+    });
+  }
+
+  // Subscribe to the project's repo for changes to the VCS status of the file.
+  subscribeToRepo(repo) {
+    if (repo == null) { return; }
+
+    // Remove previous repo subscriptions.
+    if (this.repoSubscriptions != null) {
+      this.repoSubscriptions.dispose();
+    }
+    this.repoSubscriptions = new CompositeDisposable();
+
+    this.repoSubscriptions.add(repo.onDidChangeStatus(event => {
+      if (event.path === this.path) { return this.updateVcsStatus(repo, event.pathStatus); }
+    })
+    );
+    return this.repoSubscriptions.add(repo.onDidChangeStatuses(() => {
+      return this.updateVcsStatus(repo);
+    })
+    );
+  }
+
+  repoForPath() {
+    for (let dir of atom.project.getDirectories()) {
+      if (dir.contains(this.path)) { return atom.project.repositoryForDirectory(dir); }
+    }
+    return Promise.resolve(null);
+  }
+
+  // Update the VCS status property of this tab using the repo.
+  updateVcsStatus(repo, status) {
+    if (repo == null) { return; }
+
+    let newStatus = null;
+    if (repo.isPathIgnored(this.path)) {
+      newStatus = 'ignored';
+    } else {
+      if (status == null) { status = repo.getCachedPathStatus(this.path); }
+      if (repo.isStatusModified(status)) {
+        newStatus = 'modified';
+      } else if (repo.isStatusNew(status)) {
+        newStatus = 'added';
+      }
+    }
+
+    if (newStatus !== this.status) {
+      this.status = newStatus;
+      return this.updateVcsColoring();
+    }
+  }
+
+  updateVcsColoring() {
+    this.itemTitle.classList.remove('status-ignored', 'status-modified',  'status-added');
+    if (this.status && atom.config.get('tabs.enableVcsColoring')) {
+      return this.itemTitle.classList.add(`status-${this.status}`);
+    }
+  }
+
+  unsetVcsStatus() {
+    if (this.repoSubscriptions != null) {
+      this.repoSubscriptions.dispose();
+    }
+    delete this.status;
+    return this.updateVcsColoring();
+  }
+}
+
+module.exports = TabView;
diff --git a/packages/tabs/menus/tabs.cson b/packages/tabs/menus/tabs.cson
new file mode 100644
index 000000000..eb622f891
--- /dev/null
+++ b/packages/tabs/menus/tabs.cson
@@ -0,0 +1,37 @@
+menu: [
+  {
+    label: 'File'
+    submenu: [
+      {label: 'Close All Tabs', command: 'tabs:close-all-tabs'}
+    ]
+  }
+]
+
+'context-menu':
+  '.tab': [
+    {label: 'Close Tab', command: 'tabs:close-tab'}
+    {label: 'Close Other Tabs', command: 'tabs:close-other-tabs'}
+    {label: 'Close Tabs to the Right', command: 'tabs:close-tabs-to-right'}
+    {label: 'Close Tabs to the Left', command: 'tabs:close-tabs-to-left'}
+    {label: 'Close Saved Tabs', command: 'tabs:close-saved-tabs'}
+    {label: 'Close All Tabs', command: 'tabs:close-all-tabs'}
+
+    {type: 'separator'}
+
+    {label: 'Split Up', command: 'tabs:split-up'}
+    {label: 'Split Down', command: 'tabs:split-down'}
+    {label: 'Split Left', command: 'tabs:split-left'}
+    {label: 'Split Right', command: 'tabs:split-right'}
+
+  ]
+  '.tab.texteditor': [
+    {type: 'separator'}
+    {label: 'Open In New Window', command: 'tabs:open-in-new-window'}
+    {type: 'separator'}
+  ]
+  '.tab.pending-tab': [
+    {label: 'Keep Pending Tab', command: 'tabs:keep-pending-tab'}
+  ]
+  '.tab-bar': [
+    {label: 'Reopen Closed Tab', command: 'pane:reopen-closed-item'}
+  ]
diff --git a/packages/tabs/package-lock.json b/packages/tabs/package-lock.json
new file mode 100644
index 000000000..2729f1e46
--- /dev/null
+++ b/packages/tabs/package-lock.json
@@ -0,0 +1,192 @@
+{
+  "name": "tabs",
+  "version": "0.110.2",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "tabs",
+      "version": "0.110.2",
+      "license": "MIT",
+      "dependencies": {
+        "fs-plus": "^3.0.0",
+        "temp": "~0.8.1",
+        "underscore-plus": "1.x"
+      },
+      "engines": {
+        "atom": ">=1.17.0"
+      }
+    },
+    "node_modules/async": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+    },
+    "node_modules/fs-plus": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/fs-plus/-/fs-plus-3.0.2.tgz",
+      "integrity": "sha1-a19Sp3EolMTd6f2PgfqMYN8EHz0=",
+      "dependencies": {
+        "async": "^1.5.2",
+        "mkdirp": "^0.5.1",
+        "rimraf": "^2.5.2",
+        "underscore-plus": "1.x"
+      }
+    },
+    "node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
+    },
+    "node_modules/glob": {
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
+      "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "node_modules/inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
+    },
+    "node_modules/minimatch": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/minimist": {
+      "version": "0.0.8",
+      "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+      "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
+    },
+    "node_modules/mkdirp": {
+      "version": "0.5.1",
+      "resolved": "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+      "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
+      "deprecated": "Legacy versions of mkdirp are no longer supported. Please update to mkdirp 1.x. (Note that the API surface has changed to use Promises in 1.x.)",
+      "dependencies": {
+        "minimist": "0.0.8"
+      },
+      "bin": {
+        "mkdirp": "bin/cmd.js"
+      }
+    },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/os-tmpdir": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
+      "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/rimraf": {
+      "version": "2.6.2",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
+      "integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
+      "dependencies": {
+        "glob": "^7.0.5"
+      },
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/temp": {
+      "version": "0.8.3",
+      "resolved": "https://registry.npmjs.org/temp/-/temp-0.8.3.tgz",
+      "integrity": "sha1-4Ma8TSa5AxJEEOT+2BEDAU38H1k=",
+      "engines": [
+        "node >=0.8.0"
+      ],
+      "dependencies": {
+        "os-tmpdir": "^1.0.0",
+        "rimraf": "~2.2.6"
+      }
+    },
+    "node_modules/temp/node_modules/rimraf": {
+      "version": "2.2.8",
+      "resolved": "http://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
+      "integrity": "sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI=",
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.8.3",
+      "resolved": "http://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
+      "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.6.8",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.6.8.tgz",
+      "integrity": "sha512-88PrCeMKeAAC1L4xjSiiZ3Fg6kZOYrLpLGVPPeqKq/662DfQe/KTSKdSR/Q/tucKNnfW2MNAUGSCkDf8HmXC5Q==",
+      "dependencies": {
+        "underscore": "~1.8.3"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    }
+  }
+}
diff --git a/packages/tabs/package.json b/packages/tabs/package.json
new file mode 100644
index 000000000..e4b22ec4f
--- /dev/null
+++ b/packages/tabs/package.json
@@ -0,0 +1,81 @@
+{
+  "name": "tabs",
+  "version": "0.110.2",
+  "main": "./lib/main",
+  "description": "Display a selectable tab for each editor open.",
+  "license": "MIT",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "engines": {
+    "atom": ">=1.17.0"
+  },
+  "dependencies": {
+    "fs-plus": "^3.0.0",
+    "temp": "~0.8.1",
+    "underscore-plus": "1.x"
+  },
+  "consumedServices": {
+    "atom.file-icons": {
+      "versions": {
+        "1.0.0": "consumeFileIcons"
+      }
+    },
+    "file-icons.element-icons": {
+      "versions": {
+        "1.0.0": "consumeElementIcons"
+      }
+    }
+  },
+  "configSchema": {
+    "showIcons": {
+      "type": "boolean",
+      "default": true,
+      "description": "Show icons in tabs for panes which define an icon, such as the Settings and Project Find Results."
+    },
+    "alwaysShowTabBar": {
+      "type": "boolean",
+      "default": true,
+      "description": "Show the tab bar even when only one tab is open."
+    },
+    "tabScrolling": {
+      "type": [
+        "boolean",
+        "string"
+      ],
+      "enum": [
+        true,
+        false,
+        "platform"
+      ],
+      "default": "platform",
+      "description": "Jump to next or previous tab by scrolling on the tab bar."
+    },
+    "tabScrollingThreshold": {
+      "type": "integer",
+      "default": 120,
+      "description": "Threshold for switching to the next/previous tab when the `Tab Scrolling` config setting is enabled. Higher numbers mean that a longer scroll is needed to jump to the next/previous tab."
+    },
+    "enableVcsColoring": {
+      "type": "boolean",
+      "title": "Enable VCS Coloring",
+      "default": false,
+      "description": "Color file names in tabs based on VCS status, similar to how file names are colored in the tree view."
+    },
+    "addNewTabsAtEnd": {
+      "type": "boolean",
+      "default": false,
+      "description": "Add new tabs at the end of the tab bar, rather than after active tab."
+    },
+    "enableMruTabSwitching": {
+      "type": "boolean",
+      "title": "Enable MRU Tab Switching",
+      "default": true,
+      "description": "Enable tab switching in most-recently-used order. This setting has no effect if ctrl-tab or ctrl-shift-tab are already rebound via your keymap or another package."
+    },
+    "displayMruTabList": {
+      "type": "boolean",
+      "title": "Display MRU Tab Switching List",
+      "default": true,
+      "description": "When MRU Tab Switching is enabled, display the most-recently-used tab list."
+    }
+  }
+}
diff --git a/packages/tabs/spec/async-spec-helpers.js b/packages/tabs/spec/async-spec-helpers.js
new file mode 100644
index 000000000..90cb85e23
--- /dev/null
+++ b/packages/tabs/spec/async-spec-helpers.js
@@ -0,0 +1,109 @@
+function beforeEach (fn) {
+  global.beforeEach(() => {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+function afterEach (fn) {
+  global.afterEach(() => {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+;['it', 'fit', 'ffit', 'fffit'].forEach(name => {
+  exports[name] = (description, fn) => {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, () => {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise(() => result)
+      }
+    })
+  }
+})
+
+async function conditionPromise (condition, description = 'anonymous condition') {
+  const startTime = Date.now()
+
+  while (true) {
+    await timeoutPromise(100)
+
+    if (await condition()) {
+      return
+    }
+
+    if (Date.now() - startTime > 5000) {
+      throw new Error('Timed out waiting on ' + description)
+    }
+  }
+}
+
+function timeoutPromise (timeout) {
+  return new Promise(resolve => {
+    global.setTimeout(resolve, timeout)
+  })
+}
+
+function waitsForPromise (fn) {
+  const promise = fn()
+  global.waitsFor('spec promise to resolve', done => {
+    promise.then(done, error => {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
+
+function emitterEventPromise (emitter, event, timeout = 15000) {
+  return new Promise((resolve, reject) => {
+    const timeoutHandle = setTimeout(() => {
+      reject(new Error(`Timed out waiting for '${event}' event`))
+    }, timeout)
+    emitter.once(event, () => {
+      clearTimeout(timeoutHandle)
+      resolve()
+    })
+  })
+}
+
+function promisify (original) {
+  return function (...args) {
+    return new Promise((resolve, reject) => {
+      args.push((err, ...results) => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve(...results)
+        }
+      })
+
+      return original(...args)
+    })
+  }
+}
+
+function promisifySome (obj, fnNames) {
+  const result = {}
+  for (const fnName of fnNames) {
+    result[fnName] = promisify(obj[fnName])
+  }
+  return result
+}
+
+exports.afterEach = afterEach
+exports.beforeEach = beforeEach
+exports.conditionPromise = conditionPromise
+exports.emitterEventPromise = emitterEventPromise
+exports.promisify = promisify
+exports.promisifySome = promisifySome
+exports.timeoutPromise = timeoutPromise
diff --git a/packages/tabs/spec/event-helpers.js b/packages/tabs/spec/event-helpers.js
new file mode 100644
index 000000000..2d4cf44bb
--- /dev/null
+++ b/packages/tabs/spec/event-helpers.js
@@ -0,0 +1,148 @@
+
+const buildMouseEvent = (type, target, param) => {
+  if (param == null) {
+    param = {};
+  }
+
+  const event = new MouseEvent(type, {bubbles: true, cancelable: true});
+
+  if (param?.button != null) {
+    Object.defineProperty(event, 'button', {
+      get() {
+        return param?.button;
+      }
+    });
+  }
+  if (param?.ctrlKey != null) {
+    Object.defineProperty(event, 'ctrlKey', {
+      get() {
+        return param?.ctrlKey;
+      }
+    });
+  }
+  if (param?.which != null) {
+    Object.defineProperty(event, 'which', {
+      get() {
+        return param?.which;
+      }
+    });
+  }
+  if (param?.relatedTarget != null) {
+    Object.defineProperty(event, 'relatedTarget', {
+      get() {
+        return param?.relatedTarget;
+      }
+    });
+  }
+  Object.defineProperty(event, 'target', {
+    get() {
+      return target;
+    }
+  });
+  Object.defineProperty(event, 'srcObject', {
+    get() {
+      return target;
+    }
+  });
+  spyOn(event, "preventDefault");
+  return event;
+};
+
+module.exports.triggerMouseEvent = function(type, target, param) {
+  if (param == null) { param = {}; }
+  const {which, ctrlKey} = param;
+  const event = buildMouseEvent(...arguments);
+  target.dispatchEvent(event);
+  return event;
+};
+
+module.exports.triggerClickEvent = function(target, options) {
+  const events = {
+    mousedown: buildMouseEvent('mousedown', target, options),
+    mouseup: buildMouseEvent('mouseup', target, options),
+    click: buildMouseEvent('click', target, options)
+  };
+
+  target.dispatchEvent(events.mousedown);
+  target.dispatchEvent(events.mouseup);
+  target.dispatchEvent(events.click);
+
+  return events;
+};
+
+module.exports.buildDragEvents = function(dragged, dropTarget) {
+  const dataTransfer = {
+    data: {},
+    setData(key, value) { return this.data[key] = `${value}`; }, // Drag events stringify data values
+    getData(key) { return this.data[key]; }
+  };
+
+  Object.defineProperty(
+    dataTransfer,
+    'items', {
+    get() {
+      return Object.keys(dataTransfer.data).map(key => ({
+        type: key
+      }));
+    }
+  }
+  );
+
+  const dragStartEvent = buildMouseEvent("dragstart", dragged);
+  Object.defineProperty(dragStartEvent, 'dataTransfer', {get() { return dataTransfer; }});
+
+  const dropEvent = buildMouseEvent("drop", dropTarget);
+  Object.defineProperty(dropEvent, 'dataTransfer', {get() { return dataTransfer; }});
+
+  return [dragStartEvent, dropEvent];
+};
+
+module.exports.buildWheelEvent = delta => new WheelEvent("mousewheel", {wheelDeltaY: delta});
+
+module.exports.buildWheelPlusShiftEvent = delta => new WheelEvent("mousewheel", {wheelDeltaY: delta, shiftKey: true});
+
+module.exports.buildDragEnterLeaveEvents = (enterRelatedTarget, leaveRelatedTarget) => {
+  const dataTransfer = {
+    data: {},
+    setData (key, value) {
+      this.data[key] = `${value}` // Drag events stringify data values
+    },
+    getData (key) {
+      return this.data[key]
+    },
+    clearData (key) {
+      if (key) {
+        delete this.data[key]
+      } else {
+        this.data = {}
+      }
+    }
+  }
+
+  Object.defineProperty(
+    dataTransfer,
+    'items', {
+      get () {
+        return Object.keys(dataTransfer.data).map(key => ({type: key}))
+      }
+    }
+  )
+
+  const dragEnterEvent = buildMouseEvent('dragenter', null, {relatedTarget: enterRelatedTarget})
+  Object.defineProperty(dragEnterEvent, 'dataTransfer', {
+    get () {
+      return dataTransfer
+    }
+  })
+  dragEnterEvent.dataTransfer.setData('atom-tab-event', 'true')
+
+  const dragLeaveEvent = buildMouseEvent('dragleave', null, {relatedTarget: leaveRelatedTarget})
+  Object.defineProperty(dragLeaveEvent, 'dataTransfer', {
+    get () {
+      return dataTransfer
+    }
+  })
+  dragLeaveEvent.dataTransfer.setData('atom-tab-event', 'true')
+
+  return [dragEnterEvent, dragLeaveEvent]
+}
diff --git a/packages/tabs/spec/fixtures/sample.js b/packages/tabs/spec/fixtures/sample.js
new file mode 100644
index 000000000..fb33b0b43
--- /dev/null
+++ b/packages/tabs/spec/fixtures/sample.js
@@ -0,0 +1,13 @@
+var quicksort = function () {
+  var sort = function(items) {
+    if (items.length <= 1) return items;
+    var pivot = items.shift(), current, left = [], right = [];
+    while(items.length > 0) {
+      current = items.shift();
+      current < pivot ? left.push(current) : right.push(current);
+    }
+    return sort(left).concat(pivot).concat(sort(right));
+  };
+
+  return sort(Array.apply(this, arguments));
+};
\ No newline at end of file
diff --git a/packages/tabs/spec/fixtures/sample.png b/packages/tabs/spec/fixtures/sample.png
new file mode 100644
index 000000000..a09f04805
Binary files /dev/null and b/packages/tabs/spec/fixtures/sample.png differ
diff --git a/packages/tabs/spec/icon-services-spec.js b/packages/tabs/spec/icon-services-spec.js
new file mode 100644
index 000000000..9f3ce7322
--- /dev/null
+++ b/packages/tabs/spec/icon-services-spec.js
@@ -0,0 +1,102 @@
+/* eslint-env jasmine */
+/* global waitsForPromise */
+
+const path = require('path')
+const {Disposable} = require('atom')
+
+const DefaultFileIcons = require('../lib/default-file-icons')
+const getIconServices = require('../lib/get-icon-services')
+
+describe('icon services', () => {
+  let iconServices, tab
+
+  beforeEach(() => {
+    iconServices = getIconServices()
+
+    waitsForPromise(() => atom.workspace.open(path.join(__dirname, 'fixtures', 'sample.js')))
+
+    waitsForPromise(() => atom.packages.activatePackage('tabs'))
+
+    runs(() => {
+      tab = atom.workspace.getElement().querySelector('.tab')
+      expect(tab.itemTitle.className).toBe('title')
+    })
+  })
+
+  afterEach(() => {
+    iconServices.resetElementIcons()
+    iconServices.resetFileIcons()
+  })
+
+  describe('atom.file-icons', () => {
+    it('has a default handler', () => {
+      expect(iconServices.fileIcons).toBe(DefaultFileIcons)
+    })
+
+    it('shows no icons by default', () => {
+      expect(DefaultFileIcons.iconClassForPath('foo.bar')).toEqual('')
+      expect(DefaultFileIcons.iconClassForPath('README.md')).toEqual('')
+      expect(DefaultFileIcons.iconClassForPath('foo.zip')).toEqual('')
+      expect(DefaultFileIcons.iconClassForPath('foo.png')).toEqual('')
+      expect(DefaultFileIcons.iconClassForPath('foo.pdf')).toEqual('')
+      expect(DefaultFileIcons.iconClassForPath('foo.exe')).toEqual('')
+    })
+
+    it('allows a service to replace the default', () => {
+      const provider = {iconClassForPath: () => 'foo bar'}
+      const disposable = atom.packages.serviceHub.provide('atom.file-icons', '1.0.0', provider)
+      expect(iconServices.fileIcons).toBe(provider)
+      expect(tab.itemTitle.className).toBe('title icon foo bar')
+      disposable.dispose()
+      expect(iconServices.fileIcons).toBe(DefaultFileIcons)
+      expect(tab.itemTitle.className).toBe('title')
+    })
+
+    it('accepts an array of strings as icon-classes', () => {
+      const provider = {iconClassForPath: () => ['foo', 'bar']}
+      const disposable = atom.packages.serviceHub.provide('atom.file-icons', '1.0.0', provider)
+      expect(iconServices.fileIcons).toBe(provider)
+      expect(tab.itemTitle.className).toBe('title icon foo bar')
+      disposable.dispose()
+      expect(iconServices.fileIcons).toBe(DefaultFileIcons)
+      expect(tab.itemTitle.className).toBe('title')
+    })
+  })
+
+  describe('file-icons.element-icons', () => {
+    it('has no default handler', () => {
+      expect(iconServices.elementIcons).toBe(null)
+    })
+
+    it('uses the element-icon service if available', () => {
+      const provider = (element) => {
+        element.classList.add('foo', 'bar')
+        return new Disposable(() => {
+          element.classList.remove('foo', 'bar', 'icon')
+        })
+      }
+      const disposable = atom.packages.serviceHub.provide('file-icons.element-icons', '1.0.0', provider)
+      expect(iconServices.elementIcons).toBe(provider)
+      expect(tab.itemTitle.className).toBe('title icon foo bar')
+      disposable.dispose()
+      expect(iconServices.elementIcons).toBe(null)
+    })
+  })
+
+  describe('when both services are provided', () => {
+    it('gives priority to the element-icon service', () => {
+      const basicProvider = {iconClassForPath: () => 'foo'}
+      const elementProvider = (element) => {
+        element.classList.add('bar')
+        return new Disposable(() => {
+          element.classList.remove('bar')
+        })
+      }
+      atom.packages.serviceHub.provide('atom.file-icons', '1.0.0', basicProvider)
+      atom.packages.serviceHub.provide('file-icons.element-icons', '1.0.0', elementProvider)
+      expect(iconServices.fileIcons).toBe(basicProvider)
+      expect(iconServices.elementIcons).toBe(elementProvider)
+      expect(tab.itemTitle.className).toBe('title icon bar')
+    })
+  })
+})
diff --git a/packages/tabs/spec/mru-list-spec.js b/packages/tabs/spec/mru-list-spec.js
new file mode 100644
index 000000000..be10de433
--- /dev/null
+++ b/packages/tabs/spec/mru-list-spec.js
@@ -0,0 +1,183 @@
+const {it, fit, ffit, beforeEach, afterEach} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+const fs = require('fs-plus')
+const path = require('path')
+const temp = require('temp').track()
+
+describe('MRU List', () => {
+  let workspaceElement = null
+  const enableMruConfigKey = 'tabs.enableMruTabSwitching'
+  const displayMruTabListConfigKey = 'tabs.displayMruTabList'
+
+  beforeEach(async () => {
+    workspaceElement = atom.workspace.getElement()
+
+    await atom.workspace.open('sample.js')
+
+    await atom.packages.activatePackage('tabs')
+  })
+
+  describe('.activate()', () => {
+    const initialPaneCount = atom.workspace.getPanes().length
+
+    it('has exactly one modal panel per pane', async () => {
+      expect(workspaceElement.querySelectorAll('.tabs-mru-switcher').length).toBe(initialPaneCount)
+
+      let pane = atom.workspace.getActivePane()
+      pane.splitRight()
+      expect(workspaceElement.querySelectorAll('.tabs-mru-switcher').length).toBe(initialPaneCount + 1)
+
+      pane = atom.workspace.getActivePane()
+      pane.splitDown()
+      expect(workspaceElement.querySelectorAll('.tabs-mru-switcher').length).toBe(initialPaneCount + 2)
+
+      pane = atom.workspace.getActivePane()
+      await Promise.resolve(pane.close())
+
+      expect(workspaceElement.querySelectorAll('.tabs-mru-switcher').length).toBe(initialPaneCount + 1)
+
+      pane = atom.workspace.getActivePane()
+      await Promise.resolve(pane.close())
+
+      expect(workspaceElement.querySelectorAll('.tabs-mru-switcher').length).toBe(initialPaneCount)
+    })
+
+    it("Doesn't build list until activated for the first time", () => {
+      expect(workspaceElement.querySelectorAll('.tabs-mru-switcher').length).toBe(initialPaneCount)
+      expect(workspaceElement.querySelectorAll('.tabs-mru-switcher li').length).toBe(0)
+    })
+
+    it("Doesn't activate when a single pane item is open", () => {
+      const pane = atom.workspace.getActivePane()
+      atom.commands.dispatch(pane, 'pane:show-next-recently-used-item')
+      expect(workspaceElement.querySelectorAll('.tabs-mru-switcher li').length).toBe(0)
+    })
+  })
+
+  describe('contents', () => {
+    let pane = null
+    const realSetTimeout = window.setTimeout
+
+    beforeEach(async () => {
+      // The MRU tab list is deliberately delayed before display.
+      // Here we mock window.setTimeout rather than introducing a corresponding delay in tests
+      // because faster tests are better.
+      jasmine.getGlobal().setTimeout = (callback) => callback()
+      await atom.workspace.open('sample.png')
+      pane = atom.workspace.getActivePane()
+    })
+
+    afterEach(() => {
+      jasmine.getGlobal().setTimeout = realSetTimeout
+    })
+
+    it('has one item per tab', () => {
+      if (pane.onChooseNextMRUItem != null) {
+        expect(pane.getItems().length).toBe(2)
+        atom.commands.dispatch(workspaceElement, 'pane:show-next-recently-used-item')
+        expect(workspaceElement.querySelectorAll('.tabs-mru-switcher li').length).toBe(2)
+      }
+    })
+
+    it('switches between two items', () => {
+      const firstActiveItem = pane.getActiveItem()
+      atom.commands.dispatch(workspaceElement, 'pane:show-next-recently-used-item')
+      const secondActiveItem = pane.getActiveItem()
+      expect(secondActiveItem).toNotBe(firstActiveItem)
+      atom.commands.dispatch(workspaceElement, 'pane:move-active-item-to-top-of-stack')
+      const thirdActiveItem = pane.getActiveItem()
+      expect(thirdActiveItem).toBe(secondActiveItem)
+      atom.commands.dispatch(workspaceElement, 'pane:show-next-recently-used-item')
+      atom.commands.dispatch(workspaceElement, 'pane:move-active-item-to-top-of-stack')
+      const fourthActiveItem = pane.getActiveItem()
+      expect(fourthActiveItem).toBe(firstActiveItem)
+    })
+
+    it('disables display when configured to', () => {
+      atom.config.set(displayMruTabListConfigKey, false)
+      expect(atom.config.get(displayMruTabListConfigKey)).toBe(false)
+      if (pane.onChooseNextMRUItem != null) {
+        expect(pane.getItems().length).toBe(2)
+        atom.commands.dispatch(workspaceElement, 'pane:show-next-recently-used-item')
+        expect(workspaceElement.querySelectorAll('.tabs-mru-switcher li').length).toBe(0)
+      }
+    })
+  })
+
+  describe('config', () => {
+    let dotAtomPath = null
+
+    beforeEach(() => {
+      dotAtomPath = temp.path('tabs-spec-mru-config')
+      atom.config.configDirPath = dotAtomPath
+      atom.config.configFilePath = path.join(atom.config.configDirPath, 'atom.config.cson')
+      atom.keymaps.configDirPath = dotAtomPath
+    })
+
+    afterEach(() => fs.removeSync(dotAtomPath))
+
+    it('defaults on', () => {
+      expect(atom.config.get(enableMruConfigKey)).toBe(true)
+      expect(atom.config.get(displayMruTabListConfigKey)).toBe(true)
+
+      let bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-tab'
+      })
+      expect(bindings.length).toBe(1)
+      expect(bindings[0].command).toBe('pane:show-next-recently-used-item')
+
+      bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-tab ^ctrl'
+      })
+      expect(bindings.length).toBe(1)
+      expect(bindings[0].command).toBe('pane:move-active-item-to-top-of-stack')
+
+      bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-shift-tab'
+      })
+      expect(bindings.length).toBe(1)
+      expect(bindings[0].command).toBe('pane:show-previous-recently-used-item')
+
+      bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-shift-tab ^ctrl'
+      })
+      expect(bindings.length).toBe(1)
+      expect(bindings[0].command).toBe('pane:move-active-item-to-top-of-stack')
+    })
+
+    it('alters keybindings when disabled', () => {
+      atom.config.set(enableMruConfigKey, false)
+      let bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-tab'
+      })
+      expect(bindings.length).toBe(2)
+      expect(bindings[0].command).toBe('pane:show-next-item')
+
+      bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-tab ^ctrl'
+      })
+      expect(bindings.length).toBe(2)
+      expect(bindings[0].command).toBe('unset!')
+
+      bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-shift-tab'
+      })
+      expect(bindings.length).toBe(2)
+      expect(bindings[0].command).toBe('pane:show-previous-item')
+
+      bindings = atom.keymaps.findKeyBindings({
+        target: document.body,
+        keystrokes: 'ctrl-shift-tab ^ctrl'
+      })
+      expect(bindings.length).toBe(2)
+      expect(bindings[0].command).toBe('unset!')
+    })
+  })
+})
diff --git a/packages/tabs/spec/tabs-spec.js b/packages/tabs/spec/tabs-spec.js
new file mode 100644
index 000000000..3f95ad533
--- /dev/null
+++ b/packages/tabs/spec/tabs-spec.js
@@ -0,0 +1,1688 @@
+const _ = require('underscore-plus');
+const path = require('path');
+const temp = require('temp');
+const TabBarView = require('../lib/tab-bar-view');
+const layout = require('../lib/layout');
+const main = require('../lib/main');
+let {triggerMouseEvent, triggerClickEvent, buildDragEvents, buildDragEnterLeaveEvents, buildWheelEvent, buildWheelPlusShiftEvent} = require("./event-helpers.js");
+
+describe("Tabs package main", () => {
+  let centerElement = null;
+
+  beforeEach(() => {
+    centerElement = atom.workspace.getCenter().paneContainer.getElement();
+
+    waitsForPromise(() => atom.workspace.open('sample.js'));
+
+    waitsForPromise(() => atom.packages.activatePackage("tabs"));
+  });
+
+  describe(".activate()", () => it("appends a tab bar all existing and new panes", () => {
+    jasmine.attachToDOM(centerElement);
+    expect(centerElement.querySelectorAll('.pane').length).toBe(1);
+    expect(centerElement.querySelectorAll('.pane > .tab-bar').length).toBe(1);
+
+    const pane = atom.workspace.getActivePane();
+    pane.splitRight();
+
+    expect(centerElement.querySelectorAll('.pane').length).toBe(2);
+    const tabBars = centerElement.querySelectorAll('.pane > .tab-bar');
+    expect(tabBars.length).toBe(2);
+    expect(tabBars[1].getAttribute('location')).toBe('center');
+  }));
+
+  describe(".deactivate()", () => it("removes all tab bar views and stops adding them to new panes", () => {
+    const pane = atom.workspace.getActivePane();
+    pane.splitRight();
+    jasmine.attachToDOM(centerElement);
+    expect(centerElement.querySelectorAll('.pane').length).toBe(2);
+    expect(centerElement.querySelectorAll('.pane > .tab-bar').length).toBe(2);
+
+    waitsForPromise(() => Promise.resolve(atom.packages.deactivatePackage('tabs'))); // Wrapped so works with Promise & non-Promise deactivate
+
+    runs(() => {
+      expect(centerElement.querySelectorAll('.pane').length).toBe(2);
+      expect(centerElement.querySelectorAll('.pane > .tab-bar').length).toBe(0);
+
+      pane.splitRight();
+      expect(centerElement.querySelectorAll('.pane').length).toBe(3);
+      expect(centerElement.querySelectorAll('.pane > .tab-bar').length).toBe(0);
+    });
+  }));
+});
+
+describe("TabBarView", () => {
+  let [deserializerDisposable, item1, item2, editor1, pane, tabBar] = Array.from([]);
+
+  class TestView {
+    static deserialize({title, longTitle, iconName}) { return new TestView(title, longTitle, iconName); }
+    constructor(title, longTitle, iconName, pathURI, isPermanentDockItem) {
+      this.title = title;
+      this.longTitle = longTitle;
+      this.iconName = iconName;
+      this.pathURI = pathURI;
+      this._isPermanentDockItem = isPermanentDockItem;
+      this.element = document.createElement('div');
+      this.element.textContent = this.title;
+      if (isPermanentDockItem != null) {
+        this.isPermanentDockItem = () => isPermanentDockItem;
+      }
+    }
+    getTitle() { return this.title; }
+    getLongTitle() { return this.longTitle; }
+    getURI() { return this.pathURI; }
+    getIconName() { return this.iconName; }
+    serialize() { return {deserializer: 'TestView', title: this.title, longTitle: this.longTitle, iconName: this.iconName}; }
+    copy() { return new TestView(this.title, this.longTitle, this.iconName); }
+    onDidChangeTitle(callback) {
+      if (this.titleCallbacks == null) { this.titleCallbacks = []; }
+      this.titleCallbacks.push(callback);
+      return {dispose: () => _.remove(this.titleCallbacks, callback)};
+    }
+    emitTitleChanged() {
+      return Array.from(this.titleCallbacks != null ? this.titleCallbacks : []).map((callback) => callback());
+    }
+    onDidChangeIcon(callback) {
+      if (this.iconCallbacks == null) { this.iconCallbacks = []; }
+      this.iconCallbacks.push(callback);
+      return {dispose: () => _.remove(this.iconCallbacks, callback)};
+    }
+    emitIconChanged() {
+      return Array.from(this.iconCallbacks != null ? this.iconCallbacks : []).map((callback) => callback());
+    }
+    onDidChangeModified() { // to suppress deprecation warning
+      return {dispose() {}};
+    }
+  }
+
+  beforeEach(() => {
+    deserializerDisposable = atom.deserializers.add(TestView);
+    item1 = new TestView('Item 1', undefined, "squirrel", "sample.js");
+    item2 = new TestView('Item 2');
+
+    waitsForPromise(() => atom.workspace.open('sample.js'));
+
+    runs(() => {
+      editor1 = atom.workspace.getActiveTextEditor();
+      pane = atom.workspace.getActivePane();
+      pane.addItem(item1, {index: 0});
+      pane.addItem(item2, {index: 2});
+      pane.activateItem(item2);
+      tabBar = new TabBarView(pane, 'center');
+    });
+  });
+
+  afterEach(() => deserializerDisposable.dispose());
+
+  describe("when the mouse is moved over the tab bar", () => it("fixes the width on every tab", () => {
+    jasmine.attachToDOM(tabBar.element);
+
+    triggerMouseEvent('mouseenter', tabBar.element);
+
+    const initialWidth1 = tabBar.tabAtIndex(0).element.getBoundingClientRect().width.toFixed(0);
+    const initialWidth2 = tabBar.tabAtIndex(2).element.getBoundingClientRect().width.toFixed(0);
+
+    // Minor OS differences cause fractional-pixel differences so ignore fractional part
+    expect(parseFloat(tabBar.tabAtIndex(0).element.style.maxWidth.replace('px', '')).toFixed(0)).toBe(initialWidth1);
+    expect(parseFloat(tabBar.tabAtIndex(2).element.style.maxWidth.replace('px', '')).toFixed(0)).toBe(initialWidth2);
+  }));
+
+  describe("when the mouse is moved away from the tab bar", () => it("resets the width on every tab", () => {
+    jasmine.attachToDOM(tabBar.element);
+
+    triggerMouseEvent('mouseenter', tabBar.element);
+    triggerMouseEvent('mouseleave', tabBar.element);
+
+    expect(tabBar.tabAtIndex(0).element.style.maxWidth).toBe('');
+    expect(tabBar.tabAtIndex(1).element.style.maxWidth).toBe('');
+  }));
+
+  describe("when a drag leave event moves the mouse from the tab bar", () => it("resets the width on every tab", () => {
+    jasmine.attachToDOM(tabBar.element);
+
+    triggerMouseEvent('mouseenter', tabBar.element);
+    triggerMouseEvent('dragleave', tabBar.element);
+
+    expect(tabBar.tabAtIndex(0).element.style.maxWidth).toBe('');
+    expect(tabBar.tabAtIndex(1).element.style.maxWidth).toBe('');
+  }));
+
+  describe(".initialize(pane)", () => {
+    it("creates a tab for each item on the tab bar's parent pane", () => {
+      expect(pane.getItems().length).toBe(3);
+      expect(tabBar.element.querySelectorAll('.tab').length).toBe(3);
+
+      expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title').textContent).toBe(item1.getTitle());
+      expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title').dataset.name).toBeUndefined();
+      expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title').dataset.path).toBeUndefined();
+      expect(tabBar.element.querySelectorAll('.tab')[0].dataset.type).toBe('TestView');
+
+      expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title').textContent).toBe(editor1.getTitle());
+      expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title').dataset.name).toBe(path.basename(editor1.getPath()));
+      expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title').dataset.path).toBe(editor1.getPath());
+      expect(tabBar.element.querySelectorAll('.tab')[1].dataset.type).toBe('TextEditor');
+
+      expect(tabBar.element.querySelectorAll('.tab')[2].querySelector('.title').textContent).toBe(item2.getTitle());
+      expect(tabBar.element.querySelectorAll('.tab')[2].querySelector('.title').dataset.name).toBeUndefined();
+      expect(tabBar.element.querySelectorAll('.tab')[2].querySelector('.title').dataset.path).toBeUndefined();
+      expect(tabBar.element.querySelectorAll('.tab')[0].dataset.type).toBe('TestView');
+    });
+
+    it("highlights the tab for the active pane item", () => expect(tabBar.element.querySelectorAll('.tab')[2]).toHaveClass('active'));
+
+    it("emits a warning when ::onDid... functions are not valid Disposables", () => {
+      class BadView {
+        constructor() {
+          this.element = document.createElement('div');
+        }
+        getTitle() { return "Anything"; }
+        onDidChangeTitle() {}
+        onDidChangeIcon() {}
+        onDidChangeModified() {}
+        onDidSave() {}
+        onDidChangePath() {}
+      }
+
+      const warnings = [];
+      spyOn(console, "warn").andCallFake((message, object) => warnings.push({message, object}));
+
+      const badItem = new BadView('Item 3');
+      pane.addItem(badItem);
+
+      expect(warnings[0].message).toContain("onDidChangeTitle");
+      expect(warnings[0].object).toBe(badItem);
+
+      expect(warnings[1].message).toContain("onDidChangePath");
+      expect(warnings[1].object).toBe(badItem);
+
+      expect(warnings[2].message).toContain("onDidChangeIcon");
+      expect(warnings[2].object).toBe(badItem);
+
+      expect(warnings[3].message).toContain("onDidChangeModified");
+      expect(warnings[3].object).toBe(badItem);
+
+      expect(warnings[4].message).toContain("onDidSave");
+      expect(warnings[4].object).toBe(badItem);
+    });
+  });
+
+  describe("when the active pane item changes", () => it("highlights the tab for the new active pane item", () => {
+    pane.activateItem(item1);
+    expect(tabBar.element.querySelectorAll('.active').length).toBe(1);
+    expect(tabBar.element.querySelectorAll('.tab')[0]).toHaveClass('active');
+
+    pane.activateItem(item2);
+    expect(tabBar.element.querySelectorAll('.active').length).toBe(1);
+    expect(tabBar.element.querySelectorAll('.tab')[2]).toHaveClass('active');
+  }));
+
+  describe("when a new item is added to the pane", () => {
+    it("adds the 'modified' class to the new tab if the item is initially modified", () => {
+      let editor2 = null;
+
+      waitsForPromise(() => {
+        if (atom.workspace.createItemForURI != null) {
+          return atom.workspace.createItemForURI('sample.txt').then(o => editor2 = o);
+        } else {
+          return atom.workspace.open('sample.txt', {activateItem: false}).then(o => editor2 = o);
+        }
+      });
+
+      runs(() => {
+        editor2.insertText('x');
+        pane.activateItem(editor2);
+        expect(tabBar.tabForItem(editor2).element).toHaveClass('modified');
+      });
+    });
+
+    describe("when addNewTabsAtEnd is set to true in package settings", () => {
+      it("adds a tab for the new item at the end of the tab bar", () => {
+        atom.config.set("tabs.addNewTabsAtEnd", true);
+        const item3 = new TestView('Item 3');
+        pane.activateItem(item3);
+        expect(tabBar.element.querySelectorAll('.tab').length).toBe(4);
+        expect(tabBar.tabAtIndex(3).element.querySelector('.title').textContent).toMatch('Item 3');
+      });
+
+      it("puts the new tab at the last index of the pane's items", () => {
+        atom.config.set("tabs.addNewTabsAtEnd", true);
+        const item3 = new TestView('Item 3');
+        // activate item1 so default is to add immediately after
+        pane.activateItem(item1);
+        pane.activateItem(item3);
+        expect(pane.getItems()[pane.getItems().length - 1]).toEqual(item3);
+      });
+    });
+
+    describe("when addNewTabsAtEnd is set to false in package settings", () => it("adds a tab for the new item at the same index as the item in the pane", () => {
+      atom.config.set("tabs.addNewTabsAtEnd", false);
+      pane.activateItem(item1);
+      const item3 = new TestView('Item 3');
+      pane.activateItem(item3);
+      expect(tabBar.element.querySelectorAll('.tab').length).toBe(4);
+      expect(tabBar.tabAtIndex(1).element.querySelector('.title').textContent).toMatch('Item 3');
+    }));
+  });
+
+  describe("when an item is removed from the pane", () => {
+    it("removes the item's tab from the tab bar", () => {
+      pane.destroyItem(item2);
+      expect(tabBar.getTabs().length).toBe(2);
+      expect(tabBar.element.textContent).not.toMatch('Item 2');
+    });
+
+    it("updates the titles of the remaining tabs", () => {
+      expect(tabBar.tabForItem(item2).element.textContent).toMatch('Item 2');
+      item2.longTitle = '2';
+      const item2a = new TestView('Item 2');
+      item2a.longTitle = '2a';
+      pane.activateItem(item2a);
+      expect(tabBar.tabForItem(item2).element.textContent).toMatch('2');
+      expect(tabBar.tabForItem(item2a).element.textContent).toMatch('2a');
+      pane.destroyItem(item2a);
+      expect(tabBar.tabForItem(item2).element.textContent).toMatch('Item 2');
+    });
+  });
+
+  describe("when a tab is clicked", () => {
+    it("shows the associated item on the pane and focuses the pane", () => {
+      spyOn(pane, 'activate');
+
+      let {mousedown, click} = triggerClickEvent(tabBar.tabAtIndex(0).element, {button: 0});
+      expect(pane.getActiveItem()).toBe(pane.getItems()[0]);
+      // allows dragging
+      expect(mousedown.preventDefault).not.toHaveBeenCalled();
+      expect(click.preventDefault).toHaveBeenCalled();
+
+      ({mousedown, click} = triggerClickEvent(tabBar.tabAtIndex(2).element, {button: 0}));
+      expect(pane.getActiveItem()).toBe(pane.getItems()[2]);
+      // allows dragging
+      expect(mousedown.preventDefault).not.toHaveBeenCalled();
+      expect(click.preventDefault).toHaveBeenCalled();
+      expect(pane.activate.callCount).toBe(2);
+    });
+
+    it("closes the tab when middle clicked", () => {
+      const {click} = triggerClickEvent(tabBar.tabForItem(editor1).element, {button: 1});
+
+      expect(pane.getItems().length).toBe(2);
+      expect(pane.getItems().indexOf(editor1)).toBe(-1);
+      expect(editor1.isDestroyed()).toBeTruthy();
+      expect(tabBar.getTabs().length).toBe(2);
+      expect(tabBar.element.textContent).not.toMatch('sample.js');
+
+      expect(click.preventDefault).toHaveBeenCalled();
+    });
+
+    it("doesn't switch tab when right (or ctrl-left) clicked", () => {
+      spyOn(pane, 'activate');
+
+      let {mousedown} = triggerClickEvent(tabBar.tabAtIndex(0).element, {button: 2});
+      expect(pane.getActiveItem()).not.toBe(pane.getItems()[0]);
+      expect(mousedown.preventDefault).toHaveBeenCalled();
+
+      ({mousedown} = triggerClickEvent(tabBar.tabAtIndex(0).element, {button: 0, ctrlKey: true}));
+      expect(pane.getActiveItem()).not.toBe(pane.getItems()[0]);
+      expect(mousedown.preventDefault).toHaveBeenCalled();
+
+      // We don't switch tabs, but the pane should still be activated
+      // because of the mouse click
+      expect(pane.activate).toHaveBeenCalled();
+    });
+  });
+
+  describe("when a tab's close icon is clicked", () => it("destroys the tab's item on the pane", () => {
+    tabBar.tabForItem(editor1).element.querySelector('.close-icon').click();
+    expect(pane.getItems().length).toBe(2);
+    expect(pane.getItems().indexOf(editor1)).toBe(-1);
+    expect(editor1.isDestroyed()).toBeTruthy();
+    expect(tabBar.getTabs().length).toBe(2);
+    expect(tabBar.element.textContent).not.toMatch('sample.js');
+  }));
+
+  describe("when an item is activated", () => {
+    let [item3] = Array.from([]);
+    beforeEach(() => {
+      item3 = new TestView("Item 3");
+      pane.activateItem(item3);
+
+      // Set up styles so the tab bar has a scrollbar
+      tabBar.element.style.display = 'flex';
+      tabBar.element.style.overflowX = 'scroll';
+      tabBar.element.style.margin = '0';
+
+      const container = document.createElement('div');
+      container.style.width = '150px';
+      container.appendChild(tabBar.element);
+      jasmine.attachToDOM(container);
+
+      // Expect there to be content to scroll
+      expect(tabBar.element.scrollWidth).toBeGreaterThan(tabBar.element.clientWidth);
+    });
+
+    it("does not scroll to the item when it is visible", () => {
+      pane.activateItem(item1);
+      expect(tabBar.element.scrollLeft).toBe(0);
+
+      pane.activateItem(editor1);
+      expect(tabBar.element.scrollLeft).toBe(0);
+
+      pane.activateItem(item2);
+      expect(tabBar.element.scrollLeft).toBe(0);
+
+      pane.activateItem(item3);
+      expect(tabBar.element.scrollLeft).not.toBe(0);
+    });
+
+    it("scrolls to the item when it isn't completely visible", () => {
+      tabBar.element.scrollLeft = 5;
+      expect(tabBar.element.scrollLeft).toBe(5); // This can be 0 if there is no horizontal scrollbar
+
+      pane.activateItem(item1);
+      expect(tabBar.element.scrollLeft).toBe(0);
+
+      pane.activateItem(item3);
+      expect(tabBar.element.scrollLeft).toBe(tabBar.element.scrollWidth - tabBar.element.clientWidth);
+    });
+  });
+
+  describe("when a tab item's title changes", () => it("updates the title of the item's tab", () => {
+    editor1.buffer.setPath('/this/is-a/test.txt');
+    expect(tabBar.tabForItem(editor1).element.textContent).toMatch('test.txt');
+  }));
+
+  describe("when two tabs have the same title", () => it("displays the long title on the tab if it's available from the item", () => {
+    item1.title = "Old Man";
+    item1.longTitle = "Grumpy Old Man";
+    item1.emitTitleChanged();
+    item2.title = "Old Man";
+    item2.longTitle = "Jolly Old Man";
+    item2.emitTitleChanged();
+
+    expect(tabBar.tabForItem(item1).element.textContent).toMatch("Grumpy Old Man");
+    expect(tabBar.tabForItem(item2).element.textContent).toMatch("Jolly Old Man");
+
+    item2.longTitle = undefined;
+    item2.emitTitleChanged();
+
+    expect(tabBar.tabForItem(item1).element.textContent).toMatch("Grumpy Old Man");
+    expect(tabBar.tabForItem(item2).element.textContent).toMatch("Old Man");
+  }));
+
+  describe("the close button", () => {
+    it("is present in the center, regardless of the value returned by isPermanentDockItem()", () => {
+      const item3 = new TestView('Item 3', undefined, "squirrel", "sample.js");
+      expect(item3.isPermanentDockItem).toBeUndefined();
+      const item4 = new TestView('Item 4', undefined, "squirrel", "sample.js", true);
+      expect(typeof item4.isPermanentDockItem).toBe('function');
+      const item5 = new TestView('Item 5', undefined, "squirrel", "sample.js", false);
+      expect(typeof item5.isPermanentDockItem).toBe('function');
+      pane.activateItem(item3);
+      pane.activateItem(item4);
+      pane.activateItem(item5);
+      const tabs = tabBar.element.querySelectorAll('.tab');
+      expect(tabs[2].querySelector('.close-icon')).not.toEqual(null);
+      expect(tabs[3].querySelector('.close-icon')).not.toEqual(null);
+      expect(tabs[4].querySelector('.close-icon')).not.toEqual(null);
+    });
+
+    if (atom.workspace.getRightDock == null) { return; }
+    describe("in docks", () => {
+      beforeEach(() => {
+        pane = atom.workspace.getRightDock().getActivePane();
+        tabBar = new TabBarView(pane, 'right');
+      });
+
+      it("isn't shown if the method returns true", () => {
+        item1 = new TestView('Item 1', undefined, "squirrel", "sample.js", true);
+        expect(typeof item1.isPermanentDockItem).toBe('function');
+        pane.activateItem(item1);
+        const tab = tabBar.element.querySelector('.tab');
+        expect(tab.querySelector('.close-icon')).toEqual(null);
+      });
+
+      it("is shown if the method returns false", () => {
+        item1 = new TestView('Item 1', undefined, "squirrel", "sample.js", false);
+        expect(typeof item1.isPermanentDockItem).toBe('function');
+        pane.activateItem(item1);
+        const tab = tabBar.element.querySelector('.tab');
+        expect(tab.querySelector('.close-icon')).not.toBeUndefined();
+      });
+
+      it("is shown if the method doesn't exist", () => {
+        item1 = new TestView('Item 1', undefined, "squirrel", "sample.js");
+        expect(item1.isPermanentDockItem).toBeUndefined();
+        pane.activateItem(item1);
+        const tab = tabBar.element.querySelector('.tab');
+        expect(tab.querySelector('.close-icon')).not.toEqual(null);
+      });
+    });
+  });
+
+  describe("when an item has an icon defined", () => {
+    it("displays the icon on the tab", () => {
+      expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).toHaveClass("icon");
+      expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).toHaveClass("icon-squirrel");
+    });
+
+    it("hides the icon from the tab if the icon is removed", () => {
+      item1.getIconName = null;
+      item1.emitIconChanged();
+      expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).not.toHaveClass("icon");
+      expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).not.toHaveClass("icon-squirrel");
+    });
+
+    it("updates the icon on the tab if the icon is changed", () => {
+      item1.getIconName = () => "zap";
+      item1.emitIconChanged();
+      expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).toHaveClass("icon");
+      expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).toHaveClass("icon-zap");
+    });
+
+    describe("when showIcon is set to true in package settings", () => {
+      beforeEach(() => {
+        spyOn(tabBar.tabForItem(item1), 'updateIconVisibility').andCallThrough();
+
+        atom.config.set("tabs.showIcons", true);
+
+        waitsFor(() => tabBar.tabForItem(item1).updateIconVisibility.callCount > 0);
+
+        runs(() => tabBar.tabForItem(item1).updateIconVisibility.reset());
+      });
+
+      it("doesn't hide the icon", () => expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).not.toHaveClass("hide-icon"));
+
+      it("hides the icon from the tab when showIcon is changed to false", () => {
+        atom.config.set("tabs.showIcons", false);
+
+        waitsFor(() => tabBar.tabForItem(item1).updateIconVisibility.callCount > 0);
+
+        runs(() => expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).toHaveClass("hide-icon"));
+      });
+    });
+
+    describe("when showIcon is set to false in package settings", () => {
+      beforeEach(() => {
+        spyOn(tabBar.tabForItem(item1), 'updateIconVisibility').andCallThrough();
+
+        atom.config.set("tabs.showIcons", false);
+
+        waitsFor(() => tabBar.tabForItem(item1).updateIconVisibility.callCount > 0);
+
+        runs(() => tabBar.tabForItem(item1).updateIconVisibility.reset());
+      });
+
+      it("hides the icon", () => expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).toHaveClass("hide-icon"));
+
+      it("shows the icon on the tab when showIcon is changed to true", () => {
+        atom.config.set("tabs.showIcons", true);
+
+        waitsFor(() => tabBar.tabForItem(item1).updateIconVisibility.callCount > 0);
+
+        expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).not.toHaveClass("hide-icon");
+      });
+    });
+  });
+
+  describe("when the item doesn't have an icon defined", () => {
+    it("doesn't display an icon on the tab", () => {
+      expect(tabBar.element.querySelectorAll('.tab')[2].querySelector('.title')).not.toHaveClass("icon");
+      expect(tabBar.element.querySelectorAll('.tab')[2].querySelector('.title')).not.toHaveClass("icon-squirrel");
+    });
+
+    it("shows the icon on the tab if an icon is defined", () => {
+      item2.getIconName = () => "squirrel";
+      item2.emitIconChanged();
+      expect(tabBar.element.querySelectorAll('.tab')[2].querySelector('.title')).toHaveClass("icon");
+      expect(tabBar.element.querySelectorAll('.tab')[2].querySelector('.title')).toHaveClass("icon-squirrel");
+    });
+  });
+
+  describe("when a tab item's modified status changes", () => it("adds or removes the 'modified' class to the tab based on the status", () => {
+    const tab = tabBar.tabForItem(editor1);
+    expect(editor1.isModified()).toBeFalsy();
+    expect(tab.element).not.toHaveClass('modified');
+
+    editor1.insertText('x');
+    advanceClock(editor1.buffer.stoppedChangingDelay);
+    expect(editor1.isModified()).toBeTruthy();
+    expect(tab.element).toHaveClass('modified');
+
+    editor1.undo();
+    advanceClock(editor1.buffer.stoppedChangingDelay);
+    expect(editor1.isModified()).toBeFalsy();
+    expect(tab.element).not.toHaveClass('modified');
+  }));
+
+  describe("when a pane item moves to a new index", () => {
+    // behavior is independent of addNewTabs config
+    describe("when addNewTabsAtEnd is set to true in package settings", () => it("updates the order of the tabs to match the new item order", () => {
+      atom.config.set("tabs.addNewTabsAtEnd", true);
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+      pane.moveItem(item2, 1);
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "Item 2", "sample.js"]);
+      pane.moveItem(editor1, 0);
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js", "Item 1", "Item 2"]);
+      pane.moveItem(item1, 2);
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js", "Item 2", "Item 1"]);
+  }));
+
+    describe("when addNewTabsAtEnd is set to false in package settings", () => it("updates the order of the tabs to match the new item order", () => {
+      atom.config.set("tabs.addNewTabsAtEnd", false);
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+      pane.moveItem(item2, 1);
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "Item 2", "sample.js"]);
+      pane.moveItem(editor1, 0);
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js", "Item 1", "Item 2"]);
+      pane.moveItem(item1, 2);
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js", "Item 2", "Item 1"]);
+  }));
+});
+
+  describe("context menu commands", () => {
+    beforeEach(() => {
+      const paneElement = pane.getElement();
+      return paneElement.insertBefore(tabBar.element, paneElement.firstChild);
+    });
+
+    describe("when tabs:close-tab is fired", () => it("closes the active tab", () => {
+      triggerClickEvent(tabBar.tabForItem(item2).element, {button: 2});
+      atom.commands.dispatch(tabBar.element, 'tabs:close-tab');
+      expect(pane.getItems().length).toBe(2);
+      expect(pane.getItems().indexOf(item2)).toBe(-1);
+      expect(tabBar.getTabs().length).toBe(2);
+      expect(tabBar.element.textContent).not.toMatch('Item 2');
+    }));
+
+    describe("when tabs:close-other-tabs is fired", () => it("closes all other tabs except the active tab", () => {
+      triggerClickEvent(tabBar.tabForItem(item2).element, {button: 2});
+      atom.commands.dispatch(tabBar.element, 'tabs:close-other-tabs');
+      expect(pane.getItems().length).toBe(1);
+      expect(tabBar.getTabs().length).toBe(1);
+      expect(tabBar.element.textContent).not.toMatch('sample.js');
+      expect(tabBar.element.textContent).toMatch('Item 2');
+    }));
+
+    describe("when tabs:close-tabs-to-right is fired", () => it("closes only the tabs to the right of the active tab", () => {
+      pane.activateItem(editor1);
+      triggerClickEvent(tabBar.tabForItem(editor1).element, {button: 2});
+      atom.commands.dispatch(tabBar.element, 'tabs:close-tabs-to-right');
+      expect(pane.getItems().length).toBe(2);
+      expect(tabBar.getTabs().length).toBe(2);
+      expect(tabBar.element.textContent).not.toMatch('Item 2');
+      expect(tabBar.element.textContent).toMatch('Item 1');
+    }));
+
+    describe("when tabs:close-tabs-to-left is fired", () => it("closes only the tabs to the left of the active tab", () => {
+      pane.activateItem(editor1);
+      triggerClickEvent(tabBar.tabForItem(editor1).element, {button: 2});
+      atom.commands.dispatch(tabBar.element, 'tabs:close-tabs-to-left');
+      expect(pane.getItems().length).toBe(2);
+      expect(tabBar.getTabs().length).toBe(2);
+      expect(tabBar.element.textContent).toMatch('Item 2');
+      expect(tabBar.element.textContent).not.toMatch('Item 1');
+    }));
+
+    describe("when tabs:close-all-tabs is fired", () => it("closes all the tabs", () => {
+      expect(pane.getItems().length).toBeGreaterThan(0);
+      atom.commands.dispatch(tabBar.element, 'tabs:close-all-tabs');
+      expect(pane.getItems().length).toBe(0);
+    }));
+
+    describe("when tabs:close-saved-tabs is fired", () => it("closes all the saved tabs", () => {
+      item1.isModified = () => true;
+      atom.commands.dispatch(tabBar.element, 'tabs:close-saved-tabs');
+      expect(pane.getItems().length).toBe(1);
+      expect(pane.getItems()[0]).toBe(item1);
+    }));
+
+    describe("when tabs:split-up is fired", () => it("splits the selected tab up", () => {
+      triggerClickEvent(tabBar.tabForItem(item2).element, {button: 2});
+      expect(atom.workspace.getCenter().getPanes().length).toBe(1);
+
+      atom.commands.dispatch(tabBar.element, 'tabs:split-up');
+      expect(atom.workspace.getCenter().getPanes().length).toBe(2);
+      expect(atom.workspace.getCenter().getPanes()[1]).toBe(pane);
+      expect(atom.workspace.getCenter().getPanes()[0].getItems()[0].getTitle()).toBe(item2.getTitle());
+    }));
+
+    describe("when tabs:split-down is fired", () => it("splits the selected tab down", () => {
+      triggerClickEvent(tabBar.tabForItem(item2).element, {button: 2});
+      expect(atom.workspace.getCenter().getPanes().length).toBe(1);
+
+      atom.commands.dispatch(tabBar.element, 'tabs:split-down');
+      expect(atom.workspace.getCenter().getPanes().length).toBe(2);
+      expect(atom.workspace.getCenter().getPanes()[0]).toBe(pane);
+      expect(atom.workspace.getCenter().getPanes()[1].getItems()[0].getTitle()).toBe(item2.getTitle());
+    }));
+
+    describe("when tabs:split-left is fired", () => it("splits the selected tab to the left", () => {
+      triggerClickEvent(tabBar.tabForItem(item2).element, {button: 2});
+      expect(atom.workspace.getCenter().getPanes().length).toBe(1);
+
+      atom.commands.dispatch(tabBar.element, 'tabs:split-left');
+      expect(atom.workspace.getCenter().getPanes().length).toBe(2);
+      expect(atom.workspace.getCenter().getPanes()[1]).toBe(pane);
+      expect(atom.workspace.getCenter().getPanes()[0].getItems()[0].getTitle()).toBe(item2.getTitle());
+    }));
+
+    describe("when tabs:split-right is fired", () => it("splits the selected tab to the right", () => {
+      triggerClickEvent(tabBar.tabForItem(item2).element, {button: 2});
+      expect(atom.workspace.getCenter().getPanes().length).toBe(1);
+
+      atom.commands.dispatch(tabBar.element, 'tabs:split-right');
+      expect(atom.workspace.getCenter().getPanes().length).toBe(2);
+      expect(atom.workspace.getCenter().getPanes()[0]).toBe(pane);
+      expect(atom.workspace.getCenter().getPanes()[1].getItems()[0].getTitle()).toBe(item2.getTitle());
+    }));
+
+    describe("when tabs:open-in-new-window is fired", () => {
+      describe("by right-clicking on a tab", () => {
+        beforeEach(() => {
+          triggerClickEvent(tabBar.tabForItem(item1).element, {button: 2});
+          expect(atom.workspace.getCenter().getPanes().length).toBe(1);
+          spyOn(atom, 'open');
+        });
+
+        it("opens new window, closes current tab", () => {
+          atom.commands.dispatch(tabBar.element, 'tabs:open-in-new-window');
+          expect(atom.open).toHaveBeenCalled();
+
+          expect(pane.getItems().length).toBe(2);
+          expect(tabBar.getTabs().length).toBe(2);
+          expect(tabBar.element.textContent).toMatch('Item 2');
+          expect(tabBar.element.textContent).not.toMatch('Item 1');
+        });
+
+        it("resets the width on every tab", () => {
+          // mouseenter (which will get emitted when going to right-click the tab) fixes the tab widths
+          // Make sure after the command is executed the widths are reset
+          triggerMouseEvent('mouseenter', tabBar.element);
+          atom.commands.dispatch(tabBar.element, 'tabs:open-in-new-window');
+
+          jasmine.attachToDOM(tabBar.element);
+          expect(tabBar.tabAtIndex(0).element.style.maxWidth).toBe('');
+          expect(tabBar.tabAtIndex(1).element.style.maxWidth).toBe('');
+        });
+      });
+
+      describe("from the command palette", () => // See #309 for background
+
+      it("does nothing", () => {
+        spyOn(atom, 'open');
+        atom.commands.dispatch(tabBar.element, 'tabs:open-in-new-window');
+        expect(atom.open).not.toHaveBeenCalled();
+      }));
+    });
+  });
+
+  describe("command palette commands", () => {
+    let paneElement = null;
+
+    beforeEach(() => paneElement = pane.getElement());
+
+    describe("when tabs:close-tab is fired", () => {
+      it("closes the active tab", () => {
+        atom.commands.dispatch(paneElement, 'tabs:close-tab');
+        expect(pane.getItems().length).toBe(2);
+        expect(pane.getItems().indexOf(item2)).toBe(-1);
+        expect(tabBar.getTabs().length).toBe(2);
+        expect(tabBar.element.textContent).not.toMatch('Item 2');
+      });
+
+      it("does nothing if no tabs are open", () => {
+        atom.commands.dispatch(paneElement, 'tabs:close-tab');
+        atom.commands.dispatch(paneElement, 'tabs:close-tab');
+        atom.commands.dispatch(paneElement, 'tabs:close-tab');
+        expect(pane.getItems().length).toBe(0);
+        expect(tabBar.getTabs().length).toBe(0);
+      });
+    });
+
+    describe("when tabs:close-other-tabs is fired", () => it("closes all other tabs except the active tab", () => {
+      atom.commands.dispatch(paneElement, 'tabs:close-other-tabs');
+      expect(pane.getItems().length).toBe(1);
+      expect(tabBar.getTabs().length).toBe(1);
+      expect(tabBar.element.textContent).not.toMatch('sample.js');
+      expect(tabBar.element.textContent).toMatch('Item 2');
+    }));
+
+    describe("when tabs:close-tabs-to-right is fired", () => it("closes only the tabs to the right of the active tab", () => {
+      pane.activateItem(editor1);
+      atom.commands.dispatch(paneElement, 'tabs:close-tabs-to-right');
+      expect(pane.getItems().length).toBe(2);
+      expect(tabBar.getTabs().length).toBe(2);
+      expect(tabBar.element.textContent).not.toMatch('Item 2');
+      expect(tabBar.element.textContent).toMatch('Item 1');
+    }));
+
+    describe("when tabs:close-all-tabs is fired", () => it("closes all the tabs", () => {
+      expect(pane.getItems().length).toBeGreaterThan(0);
+      atom.commands.dispatch(paneElement, 'tabs:close-all-tabs');
+      expect(pane.getItems().length).toBe(0);
+    }));
+
+    describe("when tabs:close-saved-tabs is fired", () => it("closes all the saved tabs", () => {
+      item1.isModified = () => true;
+      atom.commands.dispatch(paneElement, 'tabs:close-saved-tabs');
+      expect(pane.getItems().length).toBe(1);
+      expect(pane.getItems()[0]).toBe(item1);
+    }));
+
+    describe("when pane:close is fired", () => it("destroys all the tabs within the pane", () => {
+      const pane2 = pane.splitDown({copyActiveItem: true});
+      const tabBar2 = new TabBarView(pane2, 'center');
+      const tab2 = tabBar2.tabAtIndex(0);
+      spyOn(tab2, 'destroy');
+
+      waitsForPromise(() => Promise.resolve(pane2.close()).then(() => expect(tab2.destroy).toHaveBeenCalled()));
+    }));
+  });
+
+  describe("dragging and dropping tabs", () => {
+    describe("when a tab is dragged within the same pane", () => {
+      describe("when it is dropped on tab that's later in the list", () => it("moves the tab and its item, shows the tab's item, and focuses the pane", () => {
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([item1, editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2);
+        spyOn(pane, 'activate');
+
+        const tabToDrag = tabBar.tabAtIndex(0);
+        spyOn(tabToDrag, 'destroyTooltip');
+        spyOn(tabToDrag, 'updateTooltip');
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabToDrag.element, tabBar.tabAtIndex(1).element));
+        tabBar.onDragStart(dragStartEvent);
+
+        expect(tabToDrag.destroyTooltip).toHaveBeenCalled();
+        expect(tabToDrag.updateTooltip).not.toHaveBeenCalled();
+
+        tabBar.onDrop(dropEvent);
+        expect(tabToDrag.updateTooltip).toHaveBeenCalled();
+
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js", "Item 1", "Item 2"]);
+        expect(pane.getItems()).toEqual([editor1, item1, item2]);
+        expect(pane.getActiveItem()).toBe(item1);
+        expect(pane.activate).toHaveBeenCalled();
+      }));
+
+      describe("when it is dropped on a tab that's earlier in the list", () => it("moves the tab and its item, shows the tab's item, and focuses the pane", () => {
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([item1, editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2);
+        spyOn(pane, 'activate');
+
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(2).element, tabBar.tabAtIndex(0).element));
+        tabBar.onDragStart(dragStartEvent);
+        tabBar.onDrop(dropEvent);
+
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "Item 2", "sample.js"]);
+        expect(pane.getItems()).toEqual([item1, item2, editor1]);
+        expect(pane.getActiveItem()).toBe(item2);
+        expect(pane.activate).toHaveBeenCalled();
+      }));
+
+      describe("when it is dropped on itself", () => it("doesn't move the tab or item, but does make it the active item and focuses the pane", () => {
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([item1, editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2);
+        spyOn(pane, 'activate');
+
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(0).element, tabBar.tabAtIndex(0).element));
+        tabBar.onDragStart(dragStartEvent);
+        tabBar.onDrop(dropEvent);
+
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([item1, editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item1);
+        expect(pane.activate).toHaveBeenCalled();
+      }));
+
+      describe("when it is dropped on the tab bar", () => it("moves the tab and its item to the end", () => {
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([item1, editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2);
+        spyOn(pane, 'activate');
+
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(0).element, tabBar.element));
+        tabBar.onDragStart(dragStartEvent);
+        tabBar.onDrop(dropEvent);
+
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js", "Item 2", "Item 1"]);
+        expect(pane.getItems()).toEqual([editor1, item2, item1]);
+    }));
+  });
+
+    describe("when a tab is dragged to a different pane", () => {
+      let [pane2, tabBar2, item2b] = Array.from([]);
+
+      beforeEach(() => {
+        pane2 = pane.splitRight({copyActiveItem: true});
+        [item2b] = Array.from(pane2.getItems());
+        return tabBar2 = new TabBarView(pane2, 'center');
+      });
+
+      it("removes the tab and item from their original pane and moves them to the target pane", () => {
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([item1, editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2);
+
+        expect(tabBar2.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 2"]);
+        expect(pane2.getItems()).toEqual([item2b]);
+        expect(pane2.activeItem).toBe(item2b);
+        spyOn(pane2, 'activate');
+
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(0).element, tabBar2.tabAtIndex(0).element));
+        tabBar.onDragStart(dragStartEvent);
+        tabBar2.onDrop(dropEvent);
+
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2);
+
+        expect(tabBar2.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 2", "Item 1"]);
+        expect(pane2.getItems()).toEqual([item2b, item1]);
+        expect(pane2.activeItem).toBe(item1);
+        expect(pane2.activate).toHaveBeenCalled();
+      });
+
+      describe("when the tab is dragged to an empty pane", () => it("removes the tab and item from their original pane and moves them to the target pane", () => {
+        pane2.destroyItems();
+
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([item1, editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2);
+
+        expect(tabBar2.getTabs().map(tab => tab.element.textContent)).toEqual([]);
+        expect(pane2.getItems()).toEqual([]);
+        expect(pane2.activeItem).toBeUndefined();
+        spyOn(pane2, 'activate');
+
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(0).element, tabBar2.element));
+        tabBar.onDragStart(dragStartEvent);
+        tabBar2.onDragOver(dropEvent);
+        tabBar2.onDrop(dropEvent);
+
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2);
+
+        expect(tabBar2.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1"]);
+        expect(pane2.getItems()).toEqual([item1]);
+        expect(pane2.activeItem).toBe(item1);
+        expect(pane2.activate).toHaveBeenCalled();
+      }));
+
+      describe("when addNewTabsAtEnd is set to true in package settings", () => it("moves the dragged tab to the desired index in the new pane", () => {
+        atom.config.set("tabs.addNewTabsAtEnd", true);
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([item1, editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2);
+
+        expect(tabBar2.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 2"]);
+        expect(pane2.getItems()).toEqual([item2b]);
+        expect(pane2.activeItem).toBe(item2b);
+        spyOn(pane2, 'activate');
+
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar2.tabAtIndex(0).element, tabBar.tabAtIndex(0).element));
+        tabBar2.onDragStart(dragStartEvent);
+        tabBar.onDrop(dropEvent);
+
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "Item 2", "sample.js", "Item 2"]);
+        expect(pane.getItems()).toEqual([item1, item2b, editor1, item2]);
+        expect(pane.getActiveItem()).toBe(item2b);
+
+        atom.config.set("tabs.addNewTabsAtEnd", false);
+      }));
+
+      describe("when alwaysShowTabBar is set to true in package settings", () => it("always shows the tab bar in the new pane", () => {
+        atom.config.set("tabs.alwaysShowTabBar", true);
+        expect(pane2.getItems().length).toBe(1);
+        expect(tabBar2.element).not.toHaveClass('hidden');
+
+        const [dragEnterEvent, dragLeaveEvent] = Array.from(buildDragEnterLeaveEvents(pane2.getElement(), pane.getElement()));
+
+        tabBar2.onPaneDragEnter(dragEnterEvent);
+        expect(tabBar2.element).not.toHaveClass('hidden');
+
+        tabBar2.onPaneDragLeave(dragLeaveEvent);
+        expect(tabBar2.element).not.toHaveClass('hidden');
+      }));
+
+      describe("when alwaysShowTabBar is set to false in package settings", () => {
+        beforeEach(() => {
+          atom.config.set("tabs.alwaysShowTabBar", false);
+          expect(pane2.getItems().length).toBe(1);
+          expect(tabBar2.element).toHaveClass('hidden');
+        });
+
+        it("toggles the tab bar in the new pane", () => {
+          spyOn(tabBar2, 'itemIsAllowed').andReturn(true);
+          const [dragEnterEvent, dragLeaveEvent] = Array.from(buildDragEnterLeaveEvents(pane2.getElement(), pane.getElement()));
+
+          tabBar2.onPaneDragEnter(dragEnterEvent);
+          expect(tabBar2.element).not.toHaveClass('hidden');
+
+          tabBar2.onPaneDragLeave(dragLeaveEvent);
+          expect(tabBar2.element).toHaveClass('hidden');
+        });
+
+        it("does not toggle the tab bar if the item cannot be moved to that pane", () => {
+          spyOn(tabBar2, 'itemIsAllowed').andReturn(false);
+          const [dragEnterEvent, dragLeaveEvent] = Array.from(buildDragEnterLeaveEvents(pane2.getElement(), pane.getElement()));
+
+          tabBar2.onPaneDragEnter(dragEnterEvent);
+          expect(tabBar2.element).toHaveClass('hidden');
+
+          tabBar2.onPaneDragLeave(dragLeaveEvent);
+          expect(tabBar2.element).toHaveClass('hidden');
+        });
+
+        it("does not toggle the tab bar if the item being dragged is not a tab", () => {
+          const [dragEnterEvent, dragLeaveEvent] = Array.from(buildDragEnterLeaveEvents(pane2.getElement(), pane.getElement()));
+          dragEnterEvent.dataTransfer.clearData('atom-tab-event');
+          dragLeaveEvent.dataTransfer.clearData('atom-tab-event');
+
+          tabBar2.onPaneDragEnter(dragEnterEvent);
+          expect(tabBar2.element).toHaveClass('hidden');
+
+          tabBar2.onPaneDragLeave(dragLeaveEvent);
+          expect(tabBar2.element).toHaveClass('hidden');
+        });
+      });
+    });
+
+    describe("when a tab is dragged over a pane item", () => {
+      beforeEach(() => {
+        jasmine.attachToDOM(atom.workspace.getElement());
+        return layout.activate();
+      });
+
+      afterEach(() => {
+        layout.deactivate();
+        return layout.test = {};});
+
+      it("draws an overlay over the item", () => {
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        const tab = tabBar.tabAtIndex(2).element;
+        layout.test = {
+          pane,
+          itemView: pane.getElement().querySelector('.item-views'),
+          rect: {top: 0, left: 0, width: 100, height: 100}
+        };
+
+        expect(layout.view.classList.contains('visible')).toBe(false);
+        // Drag into pane
+        tab.ondrag({target: tab, clientX: 50, clientY: 50});
+        expect(layout.view.classList.contains('visible')).toBe(true);
+        expect(layout.view.style.height).toBe("100px");
+        expect(layout.view.style.width).toBe("100px");
+        // Drag out of pane
+        delete layout.test.pane;
+        tab.ondrag({target: tab, clientX: 200, clientY: 200});
+        expect(layout.view.classList.contains('visible')).toBe(false);
+      });
+
+      it("cleaves the pane in two", () => {
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        const tab = tabBar.tabAtIndex(2).element;
+        layout.test = {
+          pane,
+          itemView: pane.getElement().querySelector('.item-views'),
+          rect: {top: 0, left: 0, width: 100, height: 100}
+        };
+
+        tab.ondrag({target: tab, clientX: 80, clientY: 50});
+        tab.ondragend({target: tab, clientX: 80, clientY: 50});
+        expect(atom.workspace.getCenter().getPanes().length).toEqual(2);
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js"]);
+        expect(atom.workspace.getActivePane().getItems().length).toEqual(1);
+      });
+
+      describe("when the dragged tab is the only one in the pane", () => it("does nothing", () => {
+        tabBar.getTabs()[0].element.querySelector('.close-icon').click();
+        tabBar.getTabs()[1].element.querySelector('.close-icon').click();
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js"]);
+        const tab = tabBar.tabAtIndex(0).element;
+        layout.test = {
+          pane,
+          itemView: pane.getElement().querySelector('.item-views'),
+          rect: {top: 0, left: 0, width: 100, height: 100}
+        };
+
+        tab.ondrag({target: tab, clientX: 80, clientY: 50});
+        tab.ondragend({target: tab, clientX: 80, clientY: 50});
+        expect(atom.workspace.getCenter().getPanes().length).toEqual(1);
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js"]);
+    }));
+
+      describe("when the pane is empty", () => it("moves the tab to the target pane", () => {
+        const toPane = pane.splitDown();
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+        expect(toPane.getItems().length).toBe(0);
+        const tab = tabBar.tabAtIndex(2).element;
+        layout.test = {
+          pane: toPane,
+          itemView: toPane.getElement().querySelector('.item-views'),
+          rect: {top: 0, left: 0, width: 100, height: 100}
+        };
+
+        tab.ondrag({target: tab, clientX: 80, clientY: 50});
+        tab.ondragend({target: tab, clientX: 80, clientY: 50});
+        expect(atom.workspace.getCenter().getPanes().length).toEqual(2);
+        expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js"]);
+        expect(atom.workspace.getActivePane().getItems().length).toEqual(1);
+      }));
+
+      describe("when the tab is not allowed in that pane", () => it("does not move the tab, nor does it create a split", () => {
+        layout.test = {
+          pane,
+          itemView: pane.getElement().querySelector('.item-views'),
+          rect: {top: 0, left: 0, width: 100, height: 100}
+        };
+
+        spyOn(layout, 'itemIsAllowedInPane').andReturn(false);
+        spyOn(pane, 'split');
+
+        const tab = tabBar.tabAtIndex(0).element;
+        tab.ondrag({target: tab, clientX: 80, clientY: 50});
+        layout.lastSplit = 'left';
+        tab.ondragend({target: tab, clientX: 80, clientY: 50});
+
+        expect(pane.split).not.toHaveBeenCalled();
+      }));
+    });
+
+    describe("when a non-tab is dragged to pane", () => it("has no effect", () => {
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+      expect(pane.getItems()).toEqual([item1, editor1, item2]);
+      expect(pane.getActiveItem()).toBe(item2);
+      spyOn(pane, 'activate');
+
+      const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(0).element, tabBar.tabAtIndex(0).element));
+      tabBar.onDrop(dropEvent);
+
+      expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+      expect(pane.getItems()).toEqual([item1, editor1, item2]);
+      expect(pane.getActiveItem()).toBe(item2);
+      expect(pane.activate).not.toHaveBeenCalled();
+    }));
+
+    describe("when a tab is dragged out of application", () => it("should carry the file's information", () => {
+      const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(1).element, tabBar.tabAtIndex(1).element));
+      tabBar.onDragStart(dragStartEvent);
+
+      expect(dragStartEvent.dataTransfer.getData("text/plain")).toEqual(editor1.getPath());
+      if (process.platform === 'darwin') {
+        expect(dragStartEvent.dataTransfer.getData("text/uri-list")).toEqual(`file://${editor1.getPath()}`);
+      }
+    }));
+
+    describe("when a tab is dragged to another Atom window", () => {
+      beforeEach(() => spyOn(pane, 'destroyItem').andCallThrough());
+
+      it("closes the tab in the first window and opens the tab in the second window", () => {
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(1).element, tabBar.tabAtIndex(0).element));
+        tabBar.onDragStart(dragStartEvent);
+        atom.getCurrentWindow().webContents.send('tab:dropped', pane.id, 1);
+
+        // Can't spy on onDropOnOtherWindow since it's binded
+        waitsFor('dragged pane item to be destroyed', () => pane.destroyItem.callCount === 1);
+
+        runs(() => {
+          expect(pane.getItems()).toEqual([item1, item2]);
+          expect(pane.getActiveItem()).toBe(item2);
+
+          dropEvent.dataTransfer.setData('from-window-id', tabBar.getWindowId() + 1);
+
+          spyOn(tabBar, 'moveItemBetweenPanes').andCallThrough();
+          return tabBar.onDrop(dropEvent);
+        });
+
+        waitsFor(() => tabBar.moveItemBetweenPanes.callCount > 0);
+
+        runs(() => {
+          const editor = atom.workspace.getActiveTextEditor();
+          expect(editor.getPath()).toBe(editor1.getPath());
+          expect(pane.getItems()).toEqual([item1, editor, item2]);});
+    });
+
+      it("transfers the text of the editor when it is modified", () => {
+        editor1.setText('I came from another window');
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(1).element, tabBar.tabAtIndex(0).element));
+        tabBar.onDragStart(dragStartEvent);
+        atom.getCurrentWindow().webContents.send('tab:dropped', pane.id, 1);
+
+        // Can't spy on onDropOnOtherWindow since it's binded
+        waitsFor('dragged pane item to be destroyed', () => pane.destroyItem.callCount === 1);
+
+        runs(() => {
+          dropEvent.dataTransfer.setData('from-window-id', tabBar.getWindowId() + 1);
+
+          spyOn(tabBar, 'moveItemBetweenPanes').andCallThrough();
+          return tabBar.onDrop(dropEvent);
+        });
+
+        waitsFor(() => tabBar.moveItemBetweenPanes.callCount > 0);
+
+        runs(() => expect(atom.workspace.getActiveTextEditor().getText()).toBe('I came from another window'));
+      });
+
+      it("allows untitled editors to be moved between windows", () => {
+        editor1.getBuffer().setPath(null);
+        editor1.setText('I have no path');
+
+        const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(1).element, tabBar.tabAtIndex(0).element));
+        tabBar.onDragStart(dragStartEvent);
+        atom.getCurrentWindow().webContents.send('tab:dropped', pane.id, 1);
+
+        // Can't spy on onDropOnOtherWindow since it's binded
+        waitsFor('dragged pane item to be destroyed', () => pane.destroyItem.callCount === 1);
+
+        runs(() => {
+          dropEvent.dataTransfer.setData('from-window-id', tabBar.getWindowId() + 1);
+
+          spyOn(tabBar, 'moveItemBetweenPanes').andCallThrough();
+          return tabBar.onDrop(dropEvent);
+        });
+
+        waitsFor(() => tabBar.moveItemBetweenPanes.callCount > 0);
+
+        runs(() => {
+          expect(atom.workspace.getActiveTextEditor().getText()).toBe('I have no path');
+          expect(atom.workspace.getActiveTextEditor().getPath()).toBeUndefined();
+        });
+      });
+    });
+
+    if (atom.workspace.getLeftDock != null) {
+      describe("when a tab is dragged to another pane container", () => {
+        let [pane2, tabBar2, dockItem] = Array.from([]);
+
+        beforeEach(() => {
+          jasmine.attachToDOM(atom.workspace.getElement());
+          pane = atom.workspace.getActivePane();
+          pane2 = atom.workspace.getLeftDock().getActivePane();
+          dockItem = new TestView('Dock Item');
+          pane2.addItem(dockItem);
+          tabBar2 = new TabBarView(pane2, 'left');
+        });
+
+        it("removes the tab and item from their original pane and moves them to the target pane", () => {
+          expect(atom.workspace.getLeftDock().isVisible()).toBe(false);
+
+          expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["Item 1", "sample.js", "Item 2"]);
+          expect(pane.getItems()).toEqual([item1, editor1, item2]);
+          expect(pane.getActiveItem()).toBe(item2);
+
+          expect(tabBar2.getTabs().map(tab => tab.element.textContent)).toEqual(["Dock Item"]);
+          expect(pane2.getItems()).toEqual([dockItem]);
+          expect(pane2.getActiveItem()).toBe(dockItem);
+
+          const [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(0).element, tabBar2.element));
+          tabBar.onDragStart(dragStartEvent);
+          expect(tabBar2.element.querySelector('.placeholder')).toBeNull();
+          tabBar2.onDragOver(dropEvent);
+          expect(tabBar2.element.querySelector('.placeholder')).not.toBeNull();
+          tabBar2.onDrop(dropEvent);
+          expect(tabBar2.element.querySelector('.placeholder')).toBeNull();
+
+          expect(tabBar.getTabs().map(tab => tab.element.textContent)).toEqual(["sample.js", "Item 2"]);
+          expect(pane.getItems()).toEqual([editor1, item2]);
+          expect(pane.getActiveItem()).toBe(item2);
+
+          expect(tabBar2.getTabs().map(tab => tab.element.textContent)).toEqual(["Dock Item", "Item 1"]);
+          expect(pane2.getItems()).toEqual([dockItem, item1]);
+          expect(pane2.activeItem).toBe(item1);
+          expect(atom.workspace.getLeftDock().isVisible()).toBe(true);
+        });
+
+        it("shows a placeholder and allows the tab be dropped only if the item supports the target pane container location", () => {
+          item1.getAllowedLocations = () => ['center', 'bottom'];
+          let [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(0).element, tabBar2.element));
+          tabBar.onDragStart(dragStartEvent);
+          expect(tabBar2.element.querySelector('.placeholder')).toBeNull();
+          tabBar2.onDragOver(dropEvent);
+          expect(tabBar2.element.querySelector('.placeholder')).toBeNull();
+          tabBar2.onDrop(dropEvent);
+          expect(tabBar2.element.querySelector('.placeholder')).toBeNull();
+          expect(pane.getItems()).toEqual([item1, editor1, item2]);
+          expect(pane2.getItems()).toEqual([dockItem]);
+
+          item1.getAllowedLocations = () => ['left'];
+          [dragStartEvent, dropEvent] = Array.from(buildDragEvents(tabBar.tabAtIndex(0).element, tabBar2.element));
+          tabBar.onDragStart(dragStartEvent);
+          expect(tabBar2.element.querySelector('.placeholder')).toBeNull();
+          tabBar2.onDragOver(dropEvent);
+          expect(tabBar2.element.querySelector('.placeholder')).not.toBeNull();
+          tabBar2.onDrop(dropEvent);
+          expect(tabBar2.element.querySelector('.placeholder')).toBeNull();
+          expect(pane.getItems()).toEqual([editor1, item2]);
+          expect(pane2.getItems()).toEqual([dockItem, item1]);
+      });
+    });
+    }
+});
+
+  describe("when the tab bar is double clicked", () => it("opens a new empty editor", () => {
+    const newFileHandler = jasmine.createSpy('newFileHandler');
+    atom.commands.add(tabBar.element, 'application:new-file', newFileHandler);
+
+    triggerMouseEvent("dblclick", tabBar.getTabs()[0].element);
+    expect(newFileHandler.callCount).toBe(0);
+
+    triggerMouseEvent("dblclick", tabBar.element);
+    expect(newFileHandler.callCount).toBe(1);
+  }));
+
+  describe("when the tab bar is right-clicked", () => {
+    it("adds the right-clicked class when right-clicked", () => {
+      triggerClickEvent(tabBar.tabAtIndex(0).element, {button: 2});
+      expect(tabBar.tabAtIndex(0).element.classList.contains('right-clicked')).toBe(true);
+      triggerClickEvent(tabBar.tabAtIndex(2).element, {button: 2});
+      expect(tabBar.tabAtIndex(2).element.classList.contains('right-clicked')).toBe(true);
+      expect(tabBar.tabAtIndex(0).element.classList.contains('right-clicked')).toBe(false);
+    });
+  });
+
+  describe("when the mouse wheel is used on the tab bar", () => {
+    describe("when tabScrolling is true in package settings", () => {
+      beforeEach(() => {
+        atom.config.set("tabs.tabScrolling", true);
+        return atom.config.set("tabs.tabScrollingThreshold", 120);
+      });
+
+      describe("when the mouse wheel scrolls up", () => {
+        it("changes the active tab to the previous tab", () => {
+          expect(pane.getActiveItem()).toBe(item2);
+          tabBar.element.dispatchEvent(buildWheelEvent(120));
+          expect(pane.getActiveItem()).toBe(editor1);
+        });
+
+        it("changes the active tab to the previous tab only after the wheelDelta crosses the threshold", () => {
+          expect(pane.getActiveItem()).toBe(item2);
+          tabBar.element.dispatchEvent(buildWheelEvent(50));
+          expect(pane.getActiveItem()).toBe(item2);
+          tabBar.element.dispatchEvent(buildWheelEvent(50));
+          expect(pane.getActiveItem()).toBe(item2);
+          tabBar.element.dispatchEvent(buildWheelEvent(50));
+          expect(pane.getActiveItem()).toBe(editor1);
+        });
+      });
+
+      describe("when the mouse wheel scrolls down", () => it("changes the active tab to the previous tab", () => {
+        expect(pane.getActiveItem()).toBe(item2);
+        tabBar.element.dispatchEvent(buildWheelEvent(-120));
+        expect(pane.getActiveItem()).toBe(item1);
+      }));
+
+      describe("when the mouse wheel scrolls up and shift key is pressed", () => it("does not change the active tab", () => {
+        expect(pane.getActiveItem()).toBe(item2);
+        tabBar.element.dispatchEvent(buildWheelPlusShiftEvent(120));
+        expect(pane.getActiveItem()).toBe(item2);
+      }));
+
+      describe("when the mouse wheel scrolls down and shift key is pressed", () => it("does not change the active tab", () => {
+        expect(pane.getActiveItem()).toBe(item2);
+        tabBar.element.dispatchEvent(buildWheelPlusShiftEvent(-120));
+        expect(pane.getActiveItem()).toBe(item2);
+      }));
+
+      describe("when the tabScrolling is changed to false", () => it("does not change the active tab when scrolling", () => {
+        atom.config.set("tabs.tabScrolling", false);
+
+        expect(pane.getActiveItem()).toBe(item2);
+        tabBar.element.dispatchEvent(buildWheelEvent(120));
+        expect(pane.getActiveItem()).toBe(item2);
+      }));
+    });
+
+    describe("when tabScrolling is false in package settings", () => {
+      beforeEach(() => atom.config.set("tabs.tabScrolling", false));
+
+      describe("when the mouse wheel scrolls up one unit", () => it("does not change the active tab", () => {
+        expect(pane.getActiveItem()).toBe(item2);
+        tabBar.element.dispatchEvent(buildWheelEvent(120));
+        expect(pane.getActiveItem()).toBe(item2);
+      }));
+
+      describe("when the mouse wheel scrolls down one unit", () => it("does not change the active tab", () => {
+        expect(pane.getActiveItem()).toBe(item2);
+        tabBar.element.dispatchEvent(buildWheelEvent(-120));
+        expect(pane.getActiveItem()).toBe(item2);
+      }));
+    });
+  });
+
+  describe("when alwaysShowTabBar is true in package settings", () => {
+    beforeEach(() => atom.config.set("tabs.alwaysShowTabBar", true));
+
+    describe("when more than one tab is open", () => it("shows the tab bar", () => {
+      expect(pane.getItems().length).toBe(3);
+      expect(tabBar.element).not.toHaveClass('hidden');
+    }));
+
+    describe("when only one tab is open", () => it("shows the tab bar", () => {
+      expect(pane.getItems().length).toBe(3);
+
+      waitsForPromise(() => pane.destroyItem(item1));
+
+      waitsForPromise(() => pane.destroyItem(item2));
+
+      runs(() => {
+        expect(pane.getItems().length).toBe(1);
+        expect(tabBar.element).not.toHaveClass('hidden');
+      });
+    }));
+  });
+
+  describe("when alwaysShowTabBar is false in package settings", () => {
+    beforeEach(() => atom.config.set("tabs.alwaysShowTabBar", false));
+
+    describe("when more than one tab is open", () => it("shows the tab bar", () => {
+      expect(pane.getItems().length).toBe(3);
+      expect(tabBar.element).not.toHaveClass('hidden');
+    }));
+
+    describe("when only one tab is open", () => it("hides the tab bar", () => {
+      expect(pane.getItems().length).toBe(3);
+
+      waitsForPromise(() => pane.destroyItem(item1));
+
+      waitsForPromise(() => pane.destroyItem(item2));
+
+      runs(() => {
+        expect(pane.getItems().length).toBe(1);
+        expect(tabBar.element).toHaveClass('hidden');
+      });
+    }));
+
+    describe("when there are multiple panes", () => it("hides each tab bar separately", () => {
+      const item3 = new TestView('Item 3');
+      const item4 = new TestView('Item 4');
+      const pane2 = pane.splitRight({items: [item3, item4]});
+      const tabBar2 = new TabBarView(pane2, 'center');
+
+      expect(tabBar.element).not.toHaveClass('hidden');
+      expect(tabBar2.element).not.toHaveClass('hidden');
+
+      waitsForPromise(() => pane2.destroyItem(item3));
+
+      runs(() => {
+        expect(pane2.getItems().length).toBe(1);
+
+        expect(tabBar.element).not.toHaveClass('hidden');
+        expect(tabBar2.element).toHaveClass('hidden');
+      });
+    }));
+  });
+
+  if ((atom.workspace.buildTextEditor().isPending != null) || (atom.workspace.getActivePane().getActiveItem != null)) {
+    const isPending = function(item) {
+      if (item.isPending != null) {
+        return item.isPending();
+      } else {
+        return atom.workspace.getActivePane().getPendingItem() === item;
+      }
+    };
+
+    describe("when tab's pane item is pending", () => {
+      beforeEach(() => pane.destroyItems());
+
+      describe("when opening a new tab", () => it("adds tab with class 'temp'", () => {
+        editor1 = null;
+        waitsForPromise(() => atom.workspace.open('sample.txt', {pending: true}).then(o => editor1 = o));
+
+        runs(() => {
+          pane.activateItem(editor1);
+          expect(tabBar.element.querySelectorAll('.tab .temp').length).toBe(1);
+          expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).toHaveClass('temp');
+        });
+      }));
+
+      describe("when tabs:keep-pending-tab is triggered on the pane", () => it("terminates pending state on the tab's item", () => {
+        editor1 = null;
+        waitsForPromise(() => atom.workspace.open('sample.txt', {pending: true}).then(o => editor1 = o));
+
+        runs(() => {
+          pane.activateItem(editor1);
+          expect(isPending(editor1)).toBe(true);
+          atom.commands.dispatch(atom.workspace.getActivePane().getElement(), 'tabs:keep-pending-tab');
+          expect(isPending(editor1)).toBe(false);
+        });
+      }));
+
+      describe("when there is a temp tab already", () => {
+        it("it will replace an existing temporary tab", () => {
+          editor1 = null;
+          let editor2 = null;
+
+          waitsForPromise(() => atom.workspace.open('sample.txt', {pending: true}).then(function(o) {
+            editor1 = o;
+            return atom.workspace.open('sample2.txt', {pending: true}).then(o => editor2 = o);
+          }));
+
+          runs(() => {
+            expect(editor1.isDestroyed()).toBe(true);
+            expect(tabBar.tabForItem(editor1)).toBeUndefined();
+            expect(tabBar.tabForItem(editor2).element.querySelector('.title')).toHaveClass('temp');
+          });
+        });
+
+        it("makes the tab permanent when double-clicking the tab", () => {
+          let editor2 = null;
+
+          waitsForPromise(() => atom.workspace.open('sample.txt', {pending: true}).then(o => editor2 = o));
+
+          runs(() => {
+            pane.activateItem(editor2);
+            expect(tabBar.tabForItem(editor2).element.querySelector('.title')).toHaveClass('temp');
+            triggerMouseEvent('dblclick', tabBar.tabForItem(editor2).element, {button: 0});
+            expect(tabBar.tabForItem(editor2).element.querySelector('.title')).not.toHaveClass('temp');
+          });
+        });
+      });
+
+      describe("when editing a file in pending state", () => it("makes the item and tab permanent", () => {
+        editor1 = null;
+        waitsForPromise(() => atom.workspace.open('sample.txt', {pending: true}).then(function(o) {
+          editor1 = o;
+          pane.activateItem(editor1);
+          editor1.insertText('x');
+          return advanceClock(editor1.buffer.stoppedChangingDelay);
+        }));
+
+        runs(() => expect(tabBar.tabForItem(editor1).element.querySelector('.title')).not.toHaveClass('temp'));
+      }));
+
+      describe("when saving a file", () => it("makes the tab permanent", () => {
+        editor1 = null;
+        waitsForPromise(() => atom.workspace.open(path.join(temp.mkdirSync('tabs-'), 'sample.txt'), {pending: true}).then(function(o) {
+          editor1 = o;
+          pane.activateItem(editor1);
+          return editor1.save();
+        }));
+
+        runs(() => expect(tabBar.tabForItem(editor1).element.querySelector('.title')).not.toHaveClass('temp'));
+      }));
+
+      describe("when splitting a pending tab", () => {
+        editor1 = null;
+        beforeEach(() => waitsForPromise(() => atom.workspace.open('sample.txt', {pending: true}).then(o => editor1 = o)));
+
+        it("makes the tab permanent in the new pane", () => {
+          pane.activateItem(editor1);
+          const pane2 = pane.splitRight({copyActiveItem: true});
+          const tabBar2 = new TabBarView(pane2, 'center');
+          const newEditor = pane2.getActiveItem();
+          expect(isPending(newEditor)).toBe(false);
+          expect(tabBar2.tabForItem(newEditor).element.querySelector('.title')).not.toHaveClass('temp');
+        });
+
+        it("keeps the pending tab in the old pane", () => {
+          expect(isPending(editor1)).toBe(true);
+          expect(tabBar.tabForItem(editor1).element.querySelector('.title')).toHaveClass('temp');
+        });
+      });
+
+      describe("when dragging a pending tab to a different pane", () => it("makes the tab permanent in the other pane", () => {
+        editor1 = null;
+        waitsForPromise(() => atom.workspace.open('sample.txt', {pending: true}).then(o => editor1 = o));
+
+        runs(() => {
+          pane.activateItem(editor1);
+          const pane2 = pane.splitRight();
+
+          const tabBar2 = new TabBarView(pane2, 'center');
+          tabBar2.moveItemBetweenPanes(pane, 0, pane2, 1, editor1);
+
+          expect(tabBar2.tabForItem(pane2.getActiveItem()).element.querySelector('.title')).not.toHaveClass('temp');
+        });
+      }));
+    });
+  }
+
+  describe("integration with version control systems", () => {
+    let [repository, tab, tab1] = Array.from([]);
+
+    beforeEach(() => {
+      tab = tabBar.tabForItem(editor1);
+      spyOn(tab, 'setupVcsStatus').andCallThrough();
+      spyOn(tab, 'updateVcsStatus').andCallThrough();
+
+      tab1 = tabBar.tabForItem(item1);
+      tab1.path = '/some/path/outside/the/repository';
+      spyOn(tab1, 'updateVcsStatus').andCallThrough();
+
+      // Mock the repository
+      repository = jasmine.createSpyObj('repo', ['isPathIgnored', 'getCachedPathStatus', 'isStatusNew', 'isStatusModified']);
+      repository.isStatusNew.andCallFake(status => status === 'new');
+      repository.isStatusModified.andCallFake(status => status === 'modified');
+
+      repository.onDidChangeStatus = function(callback) {
+        if (this.changeStatusCallbacks == null) { this.changeStatusCallbacks = []; }
+        this.changeStatusCallbacks.push(callback);
+        return {dispose: () => _.remove(this.changeStatusCallbacks, callback)};
+      };
+      repository.emitDidChangeStatus = function(event) {
+        return Array.from(this.changeStatusCallbacks != null ? this.changeStatusCallbacks : []).map((callback) => callback(event));
+      };
+
+      repository.onDidChangeStatuses = function(callback) {
+        if (this.changeStatusesCallbacks == null) { this.changeStatusesCallbacks = []; }
+        this.changeStatusesCallbacks.push(callback);
+        return {dispose: () => _.remove(this.changeStatusesCallbacks, callback)};
+      };
+      repository.emitDidChangeStatuses = function(event) {
+        return Array.from(this.changeStatusesCallbacks != null ? this.changeStatusesCallbacks : []).map((callback) => callback(event));
+      };
+
+      // Mock atom.project to pretend we are working within a repository
+      spyOn(atom.project, 'repositoryForDirectory').andReturn(Promise.resolve(repository));
+
+      atom.config.set("tabs.enableVcsColoring", true);
+
+      return waitsFor(() => (repository.changeStatusCallbacks != null ? repository.changeStatusCallbacks.length : undefined) > 0);
+    });
+
+    describe("when working inside a VCS repository", () => {
+      it("adds custom style for new items", () => {
+        repository.getCachedPathStatus.andReturn('new');
+        tab.updateVcsStatus(repository);
+        expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title')).toHaveClass("status-added");
+      });
+
+      it("adds custom style for modified items", () => {
+        repository.getCachedPathStatus.andReturn('modified');
+        tab.updateVcsStatus(repository);
+        expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title')).toHaveClass("status-modified");
+      });
+
+      it("adds custom style for ignored items", () => {
+        repository.isPathIgnored.andReturn(true);
+        tab.updateVcsStatus(repository);
+        expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title')).toHaveClass("status-ignored");
+      });
+
+      it("does not add any styles for items not in the repository", () => {
+        expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).not.toHaveClass("status-added");
+        expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).not.toHaveClass("status-modified");
+        expect(tabBar.element.querySelectorAll('.tab')[0].querySelector('.title')).not.toHaveClass("status-ignored");
+      });
+    });
+
+    describe("when changes in item statuses are notified", () => {
+      it("updates status for items in the repository", () => {
+        tab.updateVcsStatus.reset();
+        repository.emitDidChangeStatuses();
+        expect(tab.updateVcsStatus.calls.length).toEqual(1);
+      });
+
+      it("updates the status of an item if it has changed", () => {
+        repository.getCachedPathStatus.reset();
+        expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title')).not.toHaveClass("status-modified");
+        repository.emitDidChangeStatus({path: tab.path, pathStatus: "modified"});
+        expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title')).toHaveClass("status-modified");
+        expect(repository.getCachedPathStatus.calls.length).toBe(0);
+      });
+
+      it("does not update status for items not in the repository", () => {
+        tab1.updateVcsStatus.reset();
+        repository.emitDidChangeStatuses();
+        expect(tab1.updateVcsStatus.calls.length).toEqual(0);
+      });
+    });
+
+    describe("when an item is saved", () => {
+      it("does not update VCS subscription if the item's path remains the same", () => {
+        tab.setupVcsStatus.reset();
+        tab.item.buffer.emitter.emit('did-save', {path: tab.path});
+        expect(tab.setupVcsStatus.calls.length).toBe(0);
+      });
+
+      it("updates VCS subscription if the item's path has changed", () => {
+        tab.setupVcsStatus.reset();
+        tab.item.buffer.emitter.emit('did-save', {path: '/some/other/path'});
+        expect(tab.setupVcsStatus.calls.length).toBe(1);
+      });
+    });
+
+    describe("when enableVcsColoring changes in package settings", () => {
+      it("removes status from the tab if enableVcsColoring is set to false", () => {
+        repository.emitDidChangeStatus({path: tab.path, pathStatus: 'new'});
+
+        expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title')).toHaveClass("status-added");
+        atom.config.set("tabs.enableVcsColoring", false);
+        expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title')).not.toHaveClass("status-added");
+      });
+
+      it("adds status to the tab if enableVcsColoring is set to true", () => {
+        atom.config.set("tabs.enableVcsColoring", false);
+        repository.getCachedPathStatus.andReturn('modified');
+        expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title')).not.toHaveClass("status-modified");
+        atom.config.set("tabs.enableVcsColoring", true);
+
+        waitsFor(() => (repository.changeStatusCallbacks != null ? repository.changeStatusCallbacks.length : undefined) > 0);
+
+        runs(() => expect(tabBar.element.querySelectorAll('.tab')[1].querySelector('.title')).toHaveClass("status-modified"));
+      });
+    });
+
+    if (atom.workspace.getLeftDock != null) {
+      describe("a pane in the dock", () => {
+        beforeEach(() => main.activate());
+        afterEach(() => main.deactivate());
+        it("gets decorated with tabs", () => {
+          const dock = atom.workspace.getLeftDock();
+          const dockElement = dock.getElement();
+          const item = new TestView('Dock Item 1');
+          expect(dockElement.querySelectorAll('.tab').length).toBe(0);
+          pane = dock.getActivePane();
+          pane.activateItem(item);
+          expect(dockElement.querySelectorAll('.tab').length).toBe(1);
+          pane.destroyItem(item);
+          expect(dockElement.querySelectorAll('.tab').length).toBe(0);
+        });
+      });
+    }
+  });
+});
diff --git a/packages/tabs/styles/layout.less b/packages/tabs/styles/layout.less
new file mode 100644
index 000000000..eadf0de3e
--- /dev/null
+++ b/packages/tabs/styles/layout.less
@@ -0,0 +1,11 @@
+.tabs-layout-overlay {
+  background: grey;
+  position: absolute;
+  z-index: 11; // Make sure this covers absolutely-positioned docks
+  opacity: 0;
+  pointer-events: none;
+  transition: all 0.2s;
+  &.visible {
+    opacity: 0.1;
+  }
+}
diff --git a/packages/tabs/styles/tabs-mru-switcher.less b/packages/tabs/styles/tabs-mru-switcher.less
new file mode 100644
index 000000000..000b32291
--- /dev/null
+++ b/packages/tabs/styles/tabs-mru-switcher.less
@@ -0,0 +1,10 @@
+
+.tabs-mru-switcher {
+  .list-group.list-group {
+    margin-top: 0;
+
+    // Fix to make the scrollbar appear
+    // Not necessary for all themes
+    backface-visibility: hidden;
+  }
+}
diff --git a/packages/tabs/styles/tabs.less b/packages/tabs/styles/tabs.less
new file mode 100644
index 000000000..e9e68586a
--- /dev/null
+++ b/packages/tabs/styles/tabs.less
@@ -0,0 +1,109 @@
+@import "ui-variables";
+@import "octicon-mixins";
+
+@close-icon-size: 12px;
+
+.tab-bar {
+  display: flex;
+  -webkit-user-select: none;
+  margin: 0;
+
+  .tab {
+    font-size: 11px;
+    position: relative;
+    padding-left: 10px;
+    padding-right: 10px + @close-icon-size + 2px;
+    -webkit-user-drag: element;
+    flex: 1;
+    max-width: 175px;
+    min-width: 40px;
+    transition: max-width .25s ease-in-out;
+
+    &.active {
+      flex: 2;
+      width: -webkit-fit-content;
+
+      .title {
+        padding-right: 10px;
+      }
+    }
+
+    .title {
+      overflow: hidden;
+      white-space: pre;
+      text-overflow: ellipsis;
+      &.temp {
+        font-style: italic;
+      }
+    }
+
+    .hide-icon {
+      &.icon:before {
+        display: none;
+      }
+    }
+
+    .close-icon {
+      .octicon(x, @close-icon-size);
+      position: absolute;
+      top: 1px;
+      right: 10px;
+      cursor: default;
+    }
+
+    &.modified:hover .close-icon {
+      color: @background-color-info;
+    }
+
+    &.modified:not(:hover) .close-icon {
+      &:before { display: none; }
+      top: 11px;
+      right: 11px;
+      width: 8px;
+      height: 8px;
+      border: 2px solid @background-color-info;
+      border-radius: 12px;
+    }
+  }
+
+  /* Drag and Drop */
+  .placeholder {
+    position: relative;
+    top: 0;
+    padding: 0;
+    height: @tab-height;
+    z-index: 999;
+    list-style: none;
+    background: @background-color-info;
+    pointer-events: none;
+
+    // bar
+    &:before {
+      content: "";
+      position: absolute;
+      width: 2px;
+      margin: -1px; padding: 0;
+      height: inherit;
+      background: inherit;
+    }
+
+    // dot
+    &:after {
+      content: "";
+      position: absolute;
+      top: @tab-height;
+      margin-top: -1px;
+      margin-left: -2px;
+      z-index: 9999;
+      width: 4px;
+      height: 4px;
+      background: inherit;
+      border-radius: 4px;
+      border: 1px solid transparent;
+    }
+  }
+
+  &.hidden {
+    display: none;
+  }
+}
diff --git a/packages/update-package-dependencies/LICENSE.md b/packages/update-package-dependencies/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/update-package-dependencies/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/update-package-dependencies/README.md b/packages/update-package-dependencies/README.md
index 3b0fca9d5..c4c5de450 100644
--- a/packages/update-package-dependencies/README.md
+++ b/packages/update-package-dependencies/README.md
@@ -1,5 +1,5 @@
 ## Update Package Dependencies package
 
-Runs `apm install` from the current project's directory. This will install all dependencies referenced in the `package.json` file to the `node_modules` folder.
+Runs `puslar -p install` from the current project's directory. This will install all dependencies referenced in the `package.json` file to the `node_modules` folder.
 
-This should only be used in projects that are Atom packages.
+This should only be used in projects that are Pulsar packages.
diff --git a/packages/update-package-dependencies/package-lock.json b/packages/update-package-dependencies/package-lock.json
new file mode 100644
index 000000000..02bc23b17
--- /dev/null
+++ b/packages/update-package-dependencies/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "update-package-dependencies",
+  "version": "0.13.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "update-package-dependencies",
+      "version": "0.13.1",
+      "license": "MIT",
+      "engines": {
+        "atom": ">0.39.0"
+      }
+    }
+  }
+}
diff --git a/packages/welcome/LICENSE.md b/packages/welcome/LICENSE.md
deleted file mode 100644
index 4d231b456..000000000
--- a/packages/welcome/LICENSE.md
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2014 GitHub Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/packages/welcome/README.md b/packages/welcome/README.md
index 8ff2e195e..84e2692f8 100644
--- a/packages/welcome/README.md
+++ b/packages/welcome/README.md
@@ -1,3 +1,4 @@
 ## Welcome package
 
-Opens a welcome editor with helpful information the very first time Atom is opened.
+Opens a welcome editor with helpful information the very first time Pulsar is
+opened.
diff --git a/packages/welcome/lib/changelog-view.js b/packages/welcome/lib/changelog-view.js
index 6ff9a4ee1..5a791e65f 100644
--- a/packages/welcome/lib/changelog-view.js
+++ b/packages/welcome/lib/changelog-view.js
@@ -7,15 +7,6 @@ export default class ChangeLogView {
   constructor(props) {
     this.props = props;
     etch.initialize(this);
-
-    this.element.addEventListener('click', event => {
-      const link = event.target.closest('a');
-      if (link && link.dataset.event) {
-        this.props.reporterProxy.sendEvent(
-          `clicked-welcome-${link.dataset.event}-link`
-        );
-      }
-    });
   }
 
   didChangeShowChangeLog() {
@@ -50,7 +41,7 @@ export default class ChangeLogView {
       <div className="welcome">
         <div className="welcome-container">
           <div className="header">
-            <a title="pulsar-edit.dev" href={atom.branding.urlWeb}>
+            <a title="Full Change Log" href="https://github.com/pulsar-edit/pulsar/blob/master/CHANGELOG.md">
               {/* LOGO GOES HERE */}
               <h1 className="welcome-title">
                 Change Log
@@ -59,66 +50,43 @@ export default class ChangeLogView {
           </div>
           <div className="welcome-panel">
             <p>Take a look at some of the awesome things {atom.branding.name} has changed:</p>
+            <p>Feel free to read our <a href="https://github.com/pulsar-edit/pulsar/blob/master/CHANGELOG.md">Full Change Log</a>.</p>
             <ul>
               <li>
-                <a href="https://github.com/pulsar-edit/pulsar/pull/28">
-                  Bump to Electron 12 and Node 14
-                </a>
+                Signed Pulsar macOS Binaries
               </li>
               <li>
-                <a href="https://github.com/pulsar-edit/pulsar/pull/7">
-                  Added a rebranding API
-                </a>
+                Fixed a bug where `pulsar` on Windows could never trigger
               </li>
               <li>
-                <a href="https://github.com/pulsar-edit/pulsar/pull/67">
-                  Removed experimental file watchers on the editor
-                </a>
+                Fixed `github` package shelling out to `git` on macOS
               </li>
               <li>
-                <a href="https://github.com/pulsar-edit/pulsar/pull/131">
-                  Ability to install packages from Git Repositories
-                </a>
+                Fixed minor bugs found during fixes to tests
               </li>
               <li>
-                <a href="#">
-                  Migrated to a new Repository Backend
-                </a>
+                Improved our testing infastructure to aide in finding and fixing further bugs
               </li>
               <li>
-                <a href="#">
-                  Better error messages when a package fails to install.
-                </a>
+                Updated many dependencies of Pulsar and its core packages
               </li>
               <li>
-                <a href="#">
-                  Configuration file watching fixes
-                </a>
+                New Pulsar Icon on macOS
               </li>
               <li>
-                <a href="#">
-                  Bumped Tree-Sitter to 0.20.1 and all grammars to their recent versions
-                </a>
+                Selected text is styled by default
               </li>
               <li>
-                <a href="#">
-                  Native support for Apple Silicon
-                </a>
+                Restored `right-clicked` CSS class on tags
               </li>
               <li>
-                <a href="https://github.com/pulsar-edit/pulsar/pull/105">
-                  Removed Benchmark Mode
-                </a>
+                Fixed syntax highlighting on C++
               </li>
               <li>
-                <a href="https://github.com/pulsar-edit/pulsar/pull/59">
-                  Bumped Async to v3.2.4
-                </a>
+                Updated JavaScript snippets to modern ES6 syntax
               </li>
               <li>
-                <a href="https://github.com/pulsar-edit/pulsar/pull/40">
-                  Removed all telemetry from the editor.
-                </a>
+                PPM no longer assumes `master` for git branches
               </li>
 
             </ul>
diff --git a/packages/welcome/lib/guide-view.js b/packages/welcome/lib/guide-view.js
index a28fc5d5c..2995d80fc 100644
--- a/packages/welcome/lib/guide-view.js
+++ b/packages/welcome/lib/guide-view.js
@@ -16,13 +16,10 @@ export default class GuideView {
     this.didClickStylingButton = this.didClickStylingButton.bind(this);
     this.didClickInitScriptButton = this.didClickInitScriptButton.bind(this);
     this.didClickSnippetsButton = this.didClickSnippetsButton.bind(this);
-    this.didExpandOrCollapseSection = this.didExpandOrCollapseSection.bind(
-      this
-    );
     etch.initialize(this);
   }
 
-  update() {}
+  update() { }
 
   render() {
     return (
@@ -47,7 +44,7 @@ export default class GuideView {
                 </p>
                 <p>
                   In {this.brand} you can open individual files or a whole folder as a
-                  project. Opening a folder will ad a tree view, on the left side 
+                  project. Opening a folder will add a tree view, on the left side
                   (by default), listing all the files and folders belonging to your project.
                 </p>
                 <p>
@@ -257,8 +254,7 @@ export default class GuideView {
                 </p>
                 <p>
                   The init script is a bit of JavaScript or CoffeeScript run at
-                  startup. You can use it to quickly change the behaviour of
-                  {this.brand}.
+                  startup. You can use it to quickly change the behaviour of {this.brand}.
                 </p>
                 <p>
                   <button
@@ -358,8 +354,7 @@ export default class GuideView {
 
   getSectionProps(sectionName) {
     const props = {
-      dataset: { section: sectionName },
-      onclick: this.didExpandOrCollapseSection
+      dataset: { section: sectionName }
     };
     if (
       this.props.openSections &&
@@ -415,7 +410,6 @@ export default class GuideView {
   }
 
   didClickProjectButton() {
-    this.props.reporterProxy.sendEvent('clicked-project-cta');
     atom.commands.dispatch(
       atom.views.getView(atom.workspace),
       'application:open'
@@ -423,7 +417,6 @@ export default class GuideView {
   }
 
   didClickGitButton() {
-    this.props.reporterProxy.sendEvent('clicked-git-cta');
     atom.commands.dispatch(
       atom.views.getView(atom.workspace),
       'github:toggle-git-tab'
@@ -431,7 +424,6 @@ export default class GuideView {
   }
 
   didClickGitHubButton() {
-    this.props.reporterProxy.sendEvent('clicked-github-cta');
     atom.commands.dispatch(
       atom.views.getView(atom.workspace),
       'github:toggle-github-tab'
@@ -439,40 +431,26 @@ export default class GuideView {
   }
 
   didClickPackagesButton() {
-    this.props.reporterProxy.sendEvent('clicked-packages-cta');
     atom.workspace.open('atom://config/install', { split: 'left' });
   }
 
   didClickThemesButton() {
-    this.props.reporterProxy.sendEvent('clicked-themes-cta');
     atom.workspace.open('atom://config/themes', { split: 'left' });
   }
 
   didClickStylingButton() {
-    this.props.reporterProxy.sendEvent('clicked-styling-cta');
     atom.workspace.open('atom://.pulsar/stylesheet', { split: 'left' });
   }
 
   didClickInitScriptButton() {
-    this.props.reporterProxy.sendEvent('clicked-init-script-cta');
     atom.workspace.open('atom://.pulsar/init-script', { split: 'left' });
   }
 
   didClickSnippetsButton() {
-    this.props.reporterProxy.sendEvent('clicked-snippets-cta');
     atom.workspace.open('atom://.pulsar/snippets', { split: 'left' });
   }
 
   didClickTeletypeButton() {
-    this.props.reporterProxy.sendEvent('clicked-teletype-cta');
     atom.workspace.open('atom://config/packages/teletype', { split: 'left' });
   }
-
-  didExpandOrCollapseSection(event) {
-    const sectionName = event.currentTarget.closest('details').dataset.section;
-    const action = event.currentTarget.hasAttribute('open')
-      ? 'collapse'
-      : 'expand';
-    this.props.reporterProxy.sendEvent(`${action}-${sectionName}-section`);
-  }
 }
diff --git a/packages/welcome/lib/reporter-proxy.js b/packages/welcome/lib/reporter-proxy.js
deleted file mode 100644
index 1611c7276..000000000
--- a/packages/welcome/lib/reporter-proxy.js
+++ /dev/null
@@ -1,27 +0,0 @@
-/** @babel */
-
-export default class ReporterProxy {
-  constructor() {
-    this.reporter = null;
-    this.queue = [];
-    this.eventType = 'welcome-v1';
-  }
-
-  setReporter(reporter) {
-    this.reporter = reporter;
-    let customEvent;
-
-    while ((customEvent = this.queue.shift())) {
-      this.reporter.addCustomEvent(this.eventType, customEvent);
-    }
-  }
-
-  sendEvent(action, label, value) {
-    const event = { ea: action, el: label, ev: value };
-    if (this.reporter) {
-      this.reporter.addCustomEvent(this.eventType, event);
-    } else {
-      this.queue.push(event);
-    }
-  }
-}
diff --git a/packages/welcome/lib/welcome-package.js b/packages/welcome/lib/welcome-package.js
index 6da465861..912467cf1 100644
--- a/packages/welcome/lib/welcome-package.js
+++ b/packages/welcome/lib/welcome-package.js
@@ -1,7 +1,6 @@
 /** @babel */
 
 import { CompositeDisposable } from 'atom';
-import ReporterProxy from './reporter-proxy';
 
 let WelcomeView, GuideView, ChangeLogView;
 
@@ -10,10 +9,6 @@ const GUIDE_URI = 'atom://welcome/guide';
 const CHANGELOG_URI = 'atom://welcome/changelog';
 
 export default class WelcomePackage {
-  constructor() {
-    this.reporterProxy = new ReporterProxy();
-  }
-
   async activate() {
     this.subscriptions = new CompositeDisposable();
 
@@ -51,7 +46,6 @@ export default class WelcomePackage {
 
     if (atom.config.get('welcome.showOnStartup')) {
       await this.show();
-      this.reporterProxy.sendEvent('show-on-initial-load');
     }
 
     if (atom.config.get('welcome.showChangeLog')) {
@@ -86,26 +80,22 @@ export default class WelcomePackage {
     }
   }
 
-  consumeReporter(reporter) {
-    return this.reporterProxy.setReporter(reporter);
-  }
-
   deactivate() {
     this.subscriptions.dispose();
   }
 
   createWelcomeView(state) {
     if (WelcomeView == null) WelcomeView = require('./welcome-view');
-    return new WelcomeView({ reporterProxy: this.reporterProxy, ...state });
+    return new WelcomeView(state);
   }
 
   createGuideView(state) {
     if (GuideView == null) GuideView = require('./guide-view');
-    return new GuideView({ reporterProxy: this.reporterProxy, ...state });
+    return new GuideView(state);
   }
 
   createChangeLogView(state) {
     if (ChangeLogView == null) ChangeLogView = require("./changelog-view");
-    return new ChangeLogView({ reporterProxy: this.reporterProxy, ...state });
+    return new ChangeLogView(state);
   }
 }
diff --git a/packages/welcome/lib/welcome-view.js b/packages/welcome/lib/welcome-view.js
index 65538384a..b5c143fed 100644
--- a/packages/welcome/lib/welcome-view.js
+++ b/packages/welcome/lib/welcome-view.js
@@ -9,15 +9,6 @@ export default class WelcomeView {
     this.props = props;
     this.brand = atom.branding.name;
     etch.initialize(this);
-
-    this.element.addEventListener('click', event => {
-      const link = event.target.closest('a');
-      if (link && link.dataset.event) {
-        this.props.reporterProxy.sendEvent(
-          `clicked-welcome-${link.dataset.event}-link`
-        );
-      }
-    });
   }
 
   didChangeShowOnStartup() {
diff --git a/packages/welcome/package-lock.json b/packages/welcome/package-lock.json
index 8c8ad9a20..2d37e808b 100644
--- a/packages/welcome/package-lock.json
+++ b/packages/welcome/package-lock.json
@@ -1,1281 +1,710 @@
 {
   "name": "welcome",
   "version": "0.36.9",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "acorn": {
-      "version": "5.7.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.1.tgz",
-      "integrity": "sha512-d+nbxBUGKg7Arpsvbnlq61mc12ek3EY8EQldM3GPAhWJ1UVxC6TDGbIvUMNU6obBX3i1+ptCIzV4vq0gFPEGVQ==",
-      "dev": true
-    },
-    "acorn-jsx": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
-      "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
-      "dev": true,
-      "requires": {
-        "acorn": "^3.0.4"
-      },
+  "packages": {
+    "": {
+      "name": "welcome",
+      "version": "0.36.9",
+      "license": "MIT",
       "dependencies": {
-        "acorn": {
-          "version": "3.3.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
-          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
-          "dev": true
-        }
+        "etch": "0.9.0"
+      },
+      "devDependencies": {
+        "atom-mocha-test-runner": "^1.0.0"
+      },
+      "engines": {
+        "atom": ">0.50.0"
       }
     },
-    "ajv": {
+    "node_modules/ajv": {
       "version": "4.11.8",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
       "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
       "dev": true,
-      "requires": {
+      "optional": true,
+      "dependencies": {
         "co": "^4.6.0",
         "json-stable-stringify": "^1.0.1"
       }
     },
-    "ajv-keywords": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-1.5.1.tgz",
-      "integrity": "sha1-MU3QpLM2j609/NxU7eYXG4htrzw=",
-      "dev": true
-    },
-    "ansi-escapes": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-1.4.0.tgz",
-      "integrity": "sha1-06ioOzGapneTZisT52HHkRQiMG4=",
-      "dev": true
-    },
-    "ansi-regex": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-      "dev": true
-    },
-    "ansi-styles": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
-      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
-      "dev": true
-    },
-    "argparse": {
-      "version": "1.0.10",
-      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
-      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
-      "dev": true,
-      "requires": {
-        "sprintf-js": "~1.0.2"
-      }
-    },
-    "array-union": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
-      "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
-      "dev": true,
-      "requires": {
-        "array-uniq": "^1.0.1"
-      }
-    },
-    "array-uniq": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
-      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY=",
-      "dev": true
-    },
-    "arrify": {
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-      "resolved": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz",
-      "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
-      "dev": true
-    },
-    "asap": {
+    "node_modules/asap": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/asap/-/asap-2.0.6.tgz",
       "integrity": "sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY=",
       "dev": true,
       "optional": true
     },
-    "asn1": {
+    "node_modules/asn1": {
       "version": "0.2.4",
       "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
       "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
       "dev": true,
       "optional": true,
-      "requires": {
+      "dependencies": {
         "safer-buffer": "~2.1.0"
       }
     },
-    "assert-plus": {
+    "node_modules/assert-plus": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.2.0.tgz",
       "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ=",
       "dev": true,
-      "optional": true
+      "optional": true,
+      "engines": {
+        "node": ">=0.8"
+      }
     },
-    "asynckit": {
+    "node_modules/asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
       "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
       "dev": true,
       "optional": true
     },
-    "atom-mocha-test-runner": {
+    "node_modules/atom-mocha-test-runner": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/atom-mocha-test-runner/-/atom-mocha-test-runner-1.2.0.tgz",
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       "dev": true,
-      "requires": {
+      "dependencies": {
         "etch": "^0.8.0",
         "grim": "^2.0.1",
         "less": "^2.7.1",
         "mocha": "^3.0.0",
         "tmp": "0.0.31"
-      },
-      "dependencies": {
-        "etch": {
-          "version": "0.8.0",
-          "resolved": "https://registry.npmjs.org/etch/-/etch-0.8.0.tgz",
-          "integrity": "sha1-VPYZV0NG+KPueXP1T7vQG1YnItY=",
-          "dev": true,
-          "requires": {
-            "virtual-dom": "^2.0.1"
-          }
-        }
       }
     },
-    "aws-sign2": {
+    "node_modules/atom-mocha-test-runner/node_modules/etch": {
+      "version": "0.8.0",
+      "resolved": "https://registry.npmjs.org/etch/-/etch-0.8.0.tgz",
+      "integrity": "sha1-VPYZV0NG+KPueXP1T7vQG1YnItY=",
+      "dev": true,
+      "dependencies": {
+        "virtual-dom": "^2.0.1"
+      }
+    },
+    "node_modules/aws-sign2": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.6.0.tgz",
       "integrity": "sha1-FDQt0428yU0OW4fXY81jYSwOeU8=",
       "dev": true,
-      "optional": true
+      "optional": true,
+      "engines": {
+        "node": "*"
+      }
     },
-    "aws4": {
+    "node_modules/aws4": {
       "version": "1.8.0",
       "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
       "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==",
       "dev": true,
       "optional": true
     },
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-        "esutils": "^2.0.2",
-        "js-tokens": "^3.0.2"
-      }
-    },
-    "balanced-match": {
+    "node_modules/balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
       "dev": true
     },
-    "bcrypt-pbkdf": {
+    "node_modules/bcrypt-pbkdf": {
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       "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
       "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
       "dev": true,
       "optional": true,
-      "requires": {
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         "tweetnacl": "^0.14.3"
       }
     },
-    "boom": {
+    "node_modules/boom": {
       "version": "2.10.1",
       "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
       "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
+      "deprecated": "This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).",
       "dev": true,
       "optional": true,
-      "requires": {
+      "dependencies": {
         "hoek": "2.x.x"
+      },
+      "engines": {
+        "node": ">=0.10.40"
       }
     },
-    "brace-expansion": {
+    "node_modules/brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
       "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
       "dev": true,
-      "requires": {
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         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
       }
     },
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+    "node_modules/browser-split": {
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       "resolved": "https://registry.npmjs.org/browser-split/-/browser-split-0.0.1.tgz",
       "integrity": "sha1-ewl1dPjj6tYG+0Zk5krf3aKYGpM=",
       "dev": true
     },
-    "browser-stdout": {
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       "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
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-      "integrity": "sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=",
-      "dev": true
-    },
-    "camelize": {
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       "integrity": "sha1-FkpUg+Yw+kMh5a8HAg5TGDGyYJs=",
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+      "dev": true,
+      "optional": true,
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-    },
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       "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
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       "integrity": "sha1-nJkJQXbhIkDLItbFFGCYQA/g99Q=",
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-      "requires": {
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+      },
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       }
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-        "readable-stream": "^2.2.2",
-        "typedarray": "^0.0.6"
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-    "core-util-is": {
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       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
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       "integrity": "sha1-O9/s3GCBR8HGcgL6KR59ylnqo7g=",
+      "deprecated": "This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).",
       "dev": true,
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-          "dev": true,
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-        }
+      "engines": {
+        "node": ">=0.10"
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     },
-    "xtend": {
+    "node_modules/xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
       "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
-      "dev": true
+      "dev": true,
+      "engines": {
+        "node": ">=0.4"
+      }
     }
   }
 }
diff --git a/packages/welcome/package.json b/packages/welcome/package.json
index 3e8af01ce..dba2f9a62 100644
--- a/packages/welcome/package.json
+++ b/packages/welcome/package.json
@@ -11,9 +11,6 @@
   },
   "scripts": {
     "test": "atom --test test/*.test.js"
-  },
-  "consumedServices": {
-
   },
   "configSchema": {
     "showOnStartup": {
diff --git a/packages/welcome/test/welcome.test.js b/packages/welcome/test/welcome.test.js
index 8c3c9221a..700a6c051 100644
--- a/packages/welcome/test/welcome.test.js
+++ b/packages/welcome/test/welcome.test.js
@@ -98,84 +98,5 @@ describe('Welcome', () => {
         });
       });
     });
-
-    describe('reporting events', () => {
-      let panes, guideView, reportedEvents;
-      beforeEach(() => {
-        panes = atom.workspace.getCenter().getPanes();
-        guideView = panes[1].getItems()[0];
-        reportedEvents = [];
-
-        welcomePackage.reporterProxy.sendEvent = (...event) => {
-          reportedEvents.push(event);
-        };
-      });
-
-      describe('GuideView events', () => {
-        it('captures expand and collapse events', () => {
-          guideView.element
-            .querySelector('details[data-section="packages"] summary')
-            .click();
-          assert.deepEqual(reportedEvents, [['expand-packages-section']]);
-
-          guideView.element
-            .querySelector('details[data-section="packages"]')
-            .setAttribute('open', 'open');
-          guideView.element
-            .querySelector('details[data-section="packages"] summary')
-            .click();
-          assert.deepEqual(reportedEvents, [
-            ['expand-packages-section'],
-            ['collapse-packages-section']
-          ]);
-        });
-
-        it('captures button events', () => {
-          for (const detailElement of Array.from(
-            guideView.element.querySelector('details')
-          )) {
-            reportedEvents.length = 0;
-
-            const sectionName = detailElement.dataset.section;
-            const eventName = `clicked-${sectionName}-cta`;
-            const primaryButton = detailElement.querySelector('.btn-primary');
-            if (primaryButton) {
-              primaryButton.click();
-              assert.deepEqual(reportedEvents, [[eventName]]);
-            }
-          }
-        });
-      });
-    });
-
-    describe('when the reporter changes', () =>
-      it('sends all queued events', () => {
-        welcomePackage.reporterProxy.queue.length = 0;
-
-        const reporter1 = {
-          addCustomEvent(category, event) {
-            this.reportedEvents.push({ category, ...event });
-          },
-          reportedEvents: []
-        };
-        const reporter2 = {
-          addCustomEvent(category, event) {
-            this.reportedEvents.push({ category, ...event });
-          },
-          reportedEvents: []
-        };
-
-        welcomePackage.reporterProxy.sendEvent('foo', 'bar', 10);
-        welcomePackage.reporterProxy.sendEvent('foo2', 'bar2', 60);
-        welcomePackage.reporterProxy.setReporter(reporter1);
-
-        assert.deepEqual(reporter1.reportedEvents, [
-          { category: 'welcome-v1', ea: 'foo', el: 'bar', ev: 10 },
-          { category: 'welcome-v1', ea: 'foo2', el: 'bar2', ev: 60 }
-        ]);
-
-        welcomePackage.consumeReporter(reporter2);
-        assert.deepEqual(reporter2.reportedEvents, []);
-      }));
   });
 });
diff --git a/packages/whitespace/README.md b/packages/whitespace/README.md
new file mode 100644
index 000000000..356a97cac
--- /dev/null
+++ b/packages/whitespace/README.md
@@ -0,0 +1,15 @@
+# Whitespace package
+
+Strips trailing whitespace and adds a trailing newline when an editor is saved.
+
+To disable/enable features for a certain language package, you can use syntax-scoped properties in your `config.cson`. E.g.
+
+```coffee
+'.slim.text':
+  whitespace:
+    removeTrailingWhitespace: false
+```
+
+You find the `scope` on top of a grammar package's settings view.
+
+Note: for `.source.jade`, `.source.diff`, `.source.pug` and `.source.patch`, removing trailing whitespace is disabled by default.
diff --git a/packages/whitespace/lib/main.js b/packages/whitespace/lib/main.js
new file mode 100644
index 000000000..be4c7e0f1
--- /dev/null
+++ b/packages/whitespace/lib/main.js
@@ -0,0 +1,12 @@
+const Whitespace = require('./whitespace')
+
+module.exports = {
+  activate () {
+    this.whitespace = new Whitespace()
+  },
+
+  deactivate () {
+    if (this.whitespace) this.whitespace.destroy()
+    this.whitespace = null
+  }
+}
diff --git a/packages/whitespace/lib/whitespace.js b/packages/whitespace/lib/whitespace.js
new file mode 100644
index 000000000..e6bdac8a0
--- /dev/null
+++ b/packages/whitespace/lib/whitespace.js
@@ -0,0 +1,247 @@
+const {CompositeDisposable, Point, Range} = require('atom')
+
+const TRAILING_WHITESPACE_REGEX = /[ \t]+(?=\r?$)/g
+
+module.exports = class Whitespace {
+  constructor () {
+    this.watchedEditors = new WeakSet()
+    this.subscriptions = new CompositeDisposable()
+
+    this.subscriptions.add(atom.workspace.observeTextEditors(editor => {
+      return this.handleEvents(editor)
+    }))
+
+    this.subscriptions.add(atom.commands.add('atom-workspace', {
+      'whitespace:remove-trailing-whitespace': () => {
+        let editor = atom.workspace.getActiveTextEditor()
+
+        if (editor) {
+          this.removeTrailingWhitespace(editor, editor.getGrammar().scopeName)
+        }
+      },
+
+      'whitespace:save-with-trailing-whitespace': async () => {
+        let editor = atom.workspace.getActiveTextEditor()
+
+        if (editor) {
+          this.ignore = true
+          editor.getPath() ? await editor.save() : atom.workspace.getCenter().getActivePane().saveActiveItemAs()
+          this.ignore = false
+        }
+      },
+
+      'whitespace:save-without-trailing-whitespace': async () => {
+        let editor = atom.workspace.getActiveTextEditor()
+
+        if (editor) {
+          this.removeTrailingWhitespace(editor, editor.getGrammar().scopeName)
+          console.log(editor.getPath())
+          editor.getPath() ? await editor.save() : atom.workspace.getCenter().getActivePane().saveActiveItemAs()
+        }
+      },
+
+      'whitespace:convert-tabs-to-spaces': () => {
+        let editor = atom.workspace.getActiveTextEditor()
+
+        if (editor) {
+          this.convertTabsToSpaces(editor)
+        }
+      },
+
+      'whitespace:convert-spaces-to-tabs': () => {
+        let editor = atom.workspace.getActiveTextEditor()
+
+        if (editor) {
+          return this.convertSpacesToTabs(editor)
+        }
+      },
+
+      'whitespace:convert-all-tabs-to-spaces': () => {
+        let editor = atom.workspace.getActiveTextEditor()
+
+        if (editor) {
+          return this.convertTabsToSpaces(editor, true)
+        }
+      }
+    }))
+  }
+
+  destroy () {
+    return this.subscriptions.dispose()
+  }
+
+  handleEvents (editor) {
+    if (this.watchedEditors.has(editor)) return
+
+    let buffer = editor.getBuffer()
+
+    let bufferSavedSubscription = buffer.onWillSave(() => {
+      return buffer.transact(() => {
+        let scopeDescriptor = editor.getRootScopeDescriptor()
+
+        if (atom.config.get('whitespace.removeTrailingWhitespace', {
+          scope: scopeDescriptor
+        }) && !this.ignore) {
+          this.removeTrailingWhitespace(editor, editor.getGrammar().scopeName)
+        }
+
+        if (atom.config.get('whitespace.ensureSingleTrailingNewline', {scope: scopeDescriptor})) {
+          return this.ensureSingleTrailingNewline(editor)
+        }
+      })
+    })
+
+    let editorTextInsertedSubscription = editor.onDidInsertText(function (event) {
+      if (event.text !== '\n') {
+        return
+      }
+
+      if (!buffer.isRowBlank(event.range.start.row)) {
+        return
+      }
+
+      let scopeDescriptor = editor.getRootScopeDescriptor()
+
+      if (atom.config.get('whitespace.removeTrailingWhitespace', {
+        scope: scopeDescriptor
+      })) {
+        if (!atom.config.get('whitespace.ignoreWhitespaceOnlyLines', {
+          scope: scopeDescriptor
+        })) {
+          return editor.setIndentationForBufferRow(event.range.start.row, 0)
+        }
+      }
+    })
+
+    let editorDestroyedSubscription = editor.onDidDestroy(() => {
+      bufferSavedSubscription.dispose()
+      editorTextInsertedSubscription.dispose()
+      editorDestroyedSubscription.dispose()
+      this.subscriptions.remove(bufferSavedSubscription)
+      this.subscriptions.remove(editorTextInsertedSubscription)
+      this.subscriptions.remove(editorDestroyedSubscription)
+      this.watchedEditors.delete(editor)
+    })
+
+    this.subscriptions.add(bufferSavedSubscription)
+    this.subscriptions.add(editorTextInsertedSubscription)
+    this.subscriptions.add(editorDestroyedSubscription)
+    this.watchedEditors.add(editor)
+  }
+
+  removeTrailingWhitespace (editor, grammarScopeName) {
+    const buffer = editor.getBuffer()
+    const scopeDescriptor = editor.getRootScopeDescriptor()
+
+    // When buffer is same buffer of activeEditor's buffer, don't remove
+    // trailing WS at activeEditor's cursor line.
+    const activeEditor = atom.workspace.getActiveTextEditor()
+    const cursorRows =
+      activeEditor && activeEditor.getBuffer() === buffer
+        ? new Set(activeEditor.getCursors().map(cursor => cursor.getBufferRow()))
+        : new Set()
+
+    const ignoreCurrentLine = atom.config.get('whitespace.ignoreWhitespaceOnCurrentLine', {
+      scope: scopeDescriptor
+    })
+
+    const ignoreWhitespaceOnlyLines = atom.config.get('whitespace.ignoreWhitespaceOnlyLines', {
+      scope: scopeDescriptor
+    })
+
+    const keepMarkdownLineBreakWhitespace =
+      grammarScopeName === ('source.gfm' || 'text.md') &&
+      atom.config.get('whitespace.keepMarkdownLineBreakWhitespace')
+
+    buffer.transact(() => {
+      // TODO - remove this conditional after Atom 1.19 stable is released.
+      if (buffer.findAllSync) {
+        const ranges = buffer.findAllSync(TRAILING_WHITESPACE_REGEX)
+        for (let i = 0, n = ranges.length; i < n; i++) {
+          const range = ranges[i]
+          const row = range.start.row
+          const trailingWhitespaceStart = ranges[i].start.column
+          if (ignoreCurrentLine && cursorRows.has(row)) continue
+          if (ignoreWhitespaceOnlyLines && trailingWhitespaceStart === 0) continue
+          if (keepMarkdownLineBreakWhitespace) {
+            const whitespaceLength = range.end.column - range.start.column
+            if (trailingWhitespaceStart > 0 && whitespaceLength >= 2) continue
+          }
+          buffer.delete(ranges[i])
+        }
+      } else {
+        for (let row = 0, lineCount = buffer.getLineCount(); row < lineCount; row++) {
+          const line = buffer.lineForRow(row)
+          const lastCharacter = line[line.length - 1]
+          if (lastCharacter === ' ' || lastCharacter === '\t') {
+            const trailingWhitespaceStart = line.search(TRAILING_WHITESPACE_REGEX)
+            if (ignoreCurrentLine && cursorRows.has(row)) continue
+            if (ignoreWhitespaceOnlyLines && trailingWhitespaceStart === 0) continue
+            if (keepMarkdownLineBreakWhitespace) {
+              const whitespaceLength = line.length - trailingWhitespaceStart
+              if (trailingWhitespaceStart > 0 && whitespaceLength >= 2) continue
+            }
+            buffer.delete(Range(Point(row, trailingWhitespaceStart), Point(row, line.length)))
+          }
+        }
+      }
+    })
+  }
+
+  ensureSingleTrailingNewline (editor) {
+    let selectedBufferRanges
+    let row
+    let buffer = editor.getBuffer()
+    let lastRow = buffer.getLastRow()
+
+    if (buffer.lineForRow(lastRow) === '') {
+      row = lastRow - 1
+
+      while (row && buffer.lineForRow(row) === '') {
+        buffer.deleteRow(row--)
+      }
+    } else {
+      selectedBufferRanges = editor.getSelectedBufferRanges()
+      buffer.append('\n')
+      editor.setSelectedBufferRanges(selectedBufferRanges)
+    }
+  }
+
+  convertTabsToSpaces (editor, convertAllTabs) {
+    let buffer = editor.getBuffer()
+    let spacesText = new Array(editor.getTabLength() + 1).join(' ')
+    let regex = (convertAllTabs ? /\t/g : /^\t+/g)
+
+    buffer.transact(function () {
+      return buffer.scan(regex, function ({replace}) {
+        return replace(spacesText)
+      })
+    })
+
+    return editor.setSoftTabs(true)
+  }
+
+  convertSpacesToTabs (editor) {
+    let buffer = editor.getBuffer()
+    let scope = editor.getRootScopeDescriptor()
+    let fileTabSize = editor.getTabLength()
+
+    let userTabSize = atom.config.get('editor.tabLength', {
+      scope: scope
+    })
+
+    let regex = new RegExp(' '.repeat(fileTabSize), 'g')
+
+    buffer.transact(function () {
+      return buffer.scan(/^[ \t]+/g, function ({matchText, replace}) {
+        return replace(matchText.replace(regex, '\t').replace(/[ ]+\t/g, '\t'))
+      })
+    })
+
+    editor.setSoftTabs(false)
+
+    if (fileTabSize !== userTabSize) {
+      return editor.setTabLength(userTabSize)
+    }
+  }
+}
diff --git a/packages/whitespace/menus/whitespace.cson b/packages/whitespace/menus/whitespace.cson
new file mode 100644
index 000000000..5ed8b0efe
--- /dev/null
+++ b/packages/whitespace/menus/whitespace.cson
@@ -0,0 +1,16 @@
+'menu': [
+  {
+    'label': 'Packages'
+    'submenu': [
+      'label': 'Whitespace'
+      'submenu': [
+        { 'label': 'Remove Trailing Whitespace', 'command': 'whitespace:remove-trailing-whitespace' }
+        { 'label': 'Save With Trailing Whitespace', 'command': 'whitespace:save-with-trailing-whitespace' }
+        { 'label': 'Save Without Trailing Whitespace', 'command': 'whitespace:save-without-trailing-whitespace' }
+        { 'label': 'Convert Tabs To Spaces', 'command': 'whitespace:convert-tabs-to-spaces' }
+        { 'label': 'Convert Spaces To Tabs', 'command': 'whitespace:convert-spaces-to-tabs' }
+        { 'label': 'Convert All Tabs To Spaces', 'command': 'whitespace:convert-all-tabs-to-spaces' }
+      ]
+    ]
+  }
+]
diff --git a/packages/whitespace/package-lock.json b/packages/whitespace/package-lock.json
new file mode 100644
index 000000000..b3cf862b6
--- /dev/null
+++ b/packages/whitespace/package-lock.json
@@ -0,0 +1,210 @@
+{
+  "name": "whitespace",
+  "version": "0.37.8",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "whitespace",
+      "version": "0.37.8",
+      "license": "MIT",
+      "devDependencies": {
+        "fs-plus": "2.x",
+        "temp": "~0.8.1"
+      },
+      "engines": {
+        "atom": "*"
+      }
+    },
+    "node_modules/async": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha512-nSVgobk4rv61R9PUSDtYt7mPVB2olxNR5RWJcAsH676/ef11bUZwvu7+RGYrYauVdDPcO519v68wRhXQtxsV9w==",
+      "dev": true
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
+      "dev": true
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dev": true,
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==",
+      "dev": true
+    },
+    "node_modules/fs-plus": {
+      "version": "2.10.1",
+      "resolved": "https://registry.npmjs.org/fs-plus/-/fs-plus-2.10.1.tgz",
+      "integrity": "sha512-AaKbqqBM2p+Z5NSFhW/LU0sPD3cOnXwQ4kfM/JRX47ehwx+pxz0LuYYdpA/SeHV2i7lMQp+tA9OWBYBC/BYcfw==",
+      "dev": true,
+      "dependencies": {
+        "async": "^1.5.2",
+        "mkdirp": "^0.5.1",
+        "rimraf": "^2.5.2",
+        "underscore-plus": "1.x"
+      }
+    },
+    "node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw==",
+      "dev": true
+    },
+    "node_modules/glob": {
+      "version": "7.2.3",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
+      "integrity": "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q==",
+      "dev": true,
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.1.1",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha512-k92I/b08q4wvFscXCLvqfsHCrjrF7yiXsQuIVvVE7N82W3+aqpzuUdBbfhWcy/FZR3/4IgflMgKLOsvPDrGCJA==",
+      "dev": true,
+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "node_modules/inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+      "dev": true
+    },
+    "node_modules/minimatch": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+      "dev": true,
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/minimist": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.7.tgz",
+      "integrity": "sha512-bzfL1YUZsP41gmu/qjrEk0Q6i2ix/cVeAhbCbqH9u3zYutS1cLg00qhrD0M2MVdCcx4Sc0UpP2eBWo9rotpq6g==",
+      "dev": true,
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/mkdirp": {
+      "version": "0.5.6",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
+      "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
+      "dev": true,
+      "dependencies": {
+        "minimist": "^1.2.6"
+      },
+      "bin": {
+        "mkdirp": "bin/cmd.js"
+      }
+    },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w==",
+      "dev": true,
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha512-AVbw3UJ2e9bq64vSaS9Am0fje1Pa8pbGqTTsmXfaIiMpnr5DlDhfJOuLj9Sf95ZPVDAUerDfEk88MPmPe7UCQg==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/rimraf": {
+      "version": "2.7.1",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+      "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
+      "dev": true,
+      "dependencies": {
+        "glob": "^7.1.3"
+      },
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/temp": {
+      "version": "0.8.4",
+      "resolved": "https://registry.npmjs.org/temp/-/temp-0.8.4.tgz",
+      "integrity": "sha512-s0ZZzd0BzYv5tLSptZooSjK8oj6C+c19p7Vqta9+6NPOf7r+fxq0cJe6/oN4LTC79sy5NY8ucOJNgwsKCSbfqg==",
+      "dev": true,
+      "dependencies": {
+        "rimraf": "~2.6.2"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/temp/node_modules/rimraf": {
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
+      "integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
+      "dev": true,
+      "dependencies": {
+        "glob": "^7.1.3"
+      },
+      "bin": {
+        "rimraf": "bin.js"
+      }
+    },
+    "node_modules/underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A==",
+      "dev": true
+    },
+    "node_modules/underscore-plus": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/underscore-plus/-/underscore-plus-1.7.0.tgz",
+      "integrity": "sha512-A3BEzkeicFLnr+U/Q3EyWwJAQPbA19mtZZ4h+lLq3ttm9kn8WC4R3YpuJZEXmWdLjYP47Zc8aLZm9kwdv+zzvA==",
+      "dev": true,
+      "dependencies": {
+        "underscore": "^1.9.1"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "dev": true
+    }
+  }
+}
diff --git a/packages/whitespace/package.json b/packages/whitespace/package.json
new file mode 100644
index 000000000..5d7f1dd39
--- /dev/null
+++ b/packages/whitespace/package.json
@@ -0,0 +1,56 @@
+{
+  "name": "whitespace",
+  "version": "0.37.8",
+  "main": "./lib/main",
+  "description": "Strips trailing whitespace and adds a trailing newline when an editor is saved.",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "license": "MIT",
+  "engines": {
+    "atom": "*"
+  },
+  "devDependencies": {
+    "fs-plus": "2.x",
+    "temp": "~0.8.1"
+  },
+  "configSchema": {
+    "removeTrailingWhitespace": {
+      "type": "boolean",
+      "default": true,
+      "scopes": {
+        ".source.diff": {
+          "default": false
+        },
+        ".source.jade": {
+          "default": false
+        },
+        ".source.patch": {
+          "default": false
+        },
+        ".source.pug": {
+          "default": false
+        }
+      },
+      "description": "Automatically remove whitespace characters at ends of lines when the buffer is saved. To disable/enable for a certain language, use [syntax-scoped properties](https://github.com/pulsar-edit/whitespace#readme) in your `config.cson`."
+    },
+    "keepMarkdownLineBreakWhitespace": {
+      "type": "boolean",
+      "default": true,
+      "description": "Markdown uses two or more spaces at the end of a line to signify a line break. Enable this option to keep this whitespace in Markdown files, even if other settings would remove it."
+    },
+    "ignoreWhitespaceOnCurrentLine": {
+      "type": "boolean",
+      "default": true,
+      "description": "Skip removing trailing whitespace on the line which the cursor is positioned on when the buffer is saved. To disable/enable for a certain language, use [syntax-scoped properties](https://github.com/pulsar-edit/pulsar/tree/master/packages/whitespace#readme) in your `config.cson`."
+    },
+    "ignoreWhitespaceOnlyLines": {
+      "type": "boolean",
+      "default": false,
+      "description": "Skip removing trailing whitespace on lines which consist only of whitespace characters. To disable/enable for a certain language, use [syntax-scoped properties](https://github.com/pulsar-edit/pulsar/tree/master/packages/whitespace#readme) in your `config.cson`."
+    },
+    "ensureSingleTrailingNewline": {
+      "type": "boolean",
+      "default": true,
+      "description": "If the buffer doesn't end with a newline character when it's saved, then append one. If it ends with more than one newline, remove all but one. To disable/enable for a certain language, use [syntax-scoped properties](https://github.com/pulsar-edit/pulsar/tree/master/packages/whitespace#readme) in your `config.cson`."
+    }
+  }
+}
diff --git a/packages/whitespace/spec/async-spec-helpers.js b/packages/whitespace/spec/async-spec-helpers.js
new file mode 100644
index 000000000..0783c64fd
--- /dev/null
+++ b/packages/whitespace/spec/async-spec-helpers.js
@@ -0,0 +1,43 @@
+exports.beforeEach = function beforeEach (fn) {
+  global.beforeEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+exports.afterEach = function afterEach (fn) {
+  global.afterEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+;['it', 'fit', 'ffit', 'fffit'].forEach(function (name) {
+  exports[name] = function (description, fn) {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, function () {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise(() => result)
+      }
+    })
+  }
+})
+
+function waitsForPromise (fn) {
+  const promise = fn()
+  global.waitsFor('spec promise to resolve', function (done) {
+    promise.then(done, function (error) {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
diff --git a/packages/whitespace/spec/whitespace-spec.js b/packages/whitespace/spec/whitespace-spec.js
new file mode 100644
index 000000000..7020376f9
--- /dev/null
+++ b/packages/whitespace/spec/whitespace-spec.js
@@ -0,0 +1,531 @@
+const path = require('path')
+const fs = require('fs-plus')
+const temp = require('temp')
+const {it, fit, ffit, beforeEach} = require('./async-spec-helpers') // eslint-disable-line
+
+describe('Whitespace', () => {
+  let editor, buffer, workspaceElement
+
+  beforeEach(async () => {
+    const directory = temp.mkdirSync()
+    atom.project.setPaths([directory])
+    workspaceElement = atom.views.getView(atom.workspace)
+    const filePath = path.join(directory, 'atom-whitespace.txt')
+    fs.writeFileSync(filePath, '')
+    fs.writeFileSync(path.join(directory, 'sample.txt'), 'Some text.\n')
+
+    editor = await atom.workspace.open(filePath)
+    buffer = editor.getBuffer()
+    await atom.packages.activatePackage('whitespace')
+  })
+
+  describe('when the editor is destroyed', () => {
+    beforeEach(() => editor.destroy())
+
+    it('does not leak subscriptions', async () => {
+      const {whitespace} = atom.packages.getActivePackage('whitespace').mainModule
+      expect(whitespace.subscriptions.disposables.size).toBe(2)
+
+      await atom.packages.deactivatePackage('whitespace')
+      expect(whitespace.subscriptions.disposables).toBeNull()
+    })
+  })
+
+  describe("when 'whitespace.removeTrailingWhitespace' is true", () => {
+    beforeEach(() => atom.config.set('whitespace.removeTrailingWhitespace', true))
+
+    it('strips trailing whitespace before an editor saves a buffer', async () => {
+      // works for buffers that are already open when package is initialized
+      editor.insertText('foo   \nbar\t   \n\nbaz\n')
+      await editor.save()
+      expect(editor.getText()).toBe('foo\nbar\n\nbaz\n')
+
+      editor = await atom.workspace.open('sample.txt')
+
+      editor.moveToEndOfLine()
+      editor.insertText('           ')
+
+      // move cursor to next line to avoid ignoreWhitespaceOnCurrentLine
+      editor.moveToBottom()
+
+      await editor.save()
+      expect(editor.getText()).toBe('Some text.\n')
+    })
+
+    it('works for files with CRLF line endings', async () => {
+      editor.insertText('foo   \r\nbar\t   \r\n\r\nbaz\r\n')
+      await editor.save()
+      expect(editor.getText()).toBe('foo\r\nbar\r\n\r\nbaz\r\n')
+    })
+
+    it('clears blank lines when the editor inserts a newline', () => {
+      // Need autoIndent to be true
+      editor.update({autoIndent: true})
+
+      // Create an indent level and insert a newline
+      editor.setIndentationForBufferRow(0, 1)
+      editor.insertText('\n')
+      expect(editor.getText()).toBe('\n  ')
+
+      // Undo the newline insert and redo it
+      editor.undo()
+      expect(editor.getText()).toBe('  ')
+      editor.redo()
+      expect(editor.getText()).toBe('\n  ')
+
+      // Test for multiple cursors, possibly without blank lines
+      editor.insertText('foo')
+      editor.insertText('\n')
+      editor.setCursorBufferPosition([1, 5])    // Cursor after 'foo'
+      editor.addCursorAtBufferPosition([2, 2])  // Cursor on the next line (blank)
+      editor.insertText('\n')
+      expect(editor.getText()).toBe('\n  foo\n  \n\n  ')
+    })
+  })
+
+  describe("when 'whitespace.removeTrailingWhitespace' is false", () => {
+    beforeEach(() => atom.config.set('whitespace.removeTrailingWhitespace', false))
+
+    it('does not trim trailing whitespace', async () => {
+      editor.insertText("don't trim me \n\n")
+      await editor.save()
+      expect(editor.getText()).toBe("don't trim me \n")
+    })
+
+    describe('when the setting is set scoped to the grammar', () => {
+      beforeEach(() => {
+        atom.config.set('whitespace.removeTrailingWhitespace', true)
+        atom.config.set('whitespace.removeTrailingWhitespace', false, {scopeSelector: '.text.plain'})
+      })
+
+      it('does not trim trailing whitespace', async () => {
+        editor.insertText("don't trim me \n\n")
+        await editor.save()
+        expect(editor.getText()).toBe("don't trim me \n")
+      })
+    })
+  })
+
+  describe("when 'whitespace.ignoreWhitespaceOnCurrentLine' is true", () => {
+    beforeEach(() => atom.config.set('whitespace.ignoreWhitespaceOnCurrentLine', true))
+
+    describe('respects multiple cursors', () => {
+      it('removes the whitespace from all lines, excluding the current lines', async () => {
+        editor.insertText('1  \n2  \n3  \n')
+        editor.setCursorBufferPosition([1, 3])
+        editor.addCursorAtBufferPosition([2, 3])
+        await editor.save()
+        expect(editor.getText()).toBe('1\n2  \n3  \n')
+      })
+    })
+
+    describe('when buffer is opened in multiple editors', () => {
+      let editor2
+      beforeEach(async () => {
+        editor2 = atom.workspace.buildTextEditor({buffer: editor.buffer})
+        await atom.workspace.open(editor2)
+      })
+
+      it('[editor is activeEditor] remove WS with excluding active editor\'s cursor line', async () => {
+        editor.insertText('1  \n2  \n3  \n')
+        editor.setCursorBufferPosition([1, 3])
+        editor2.setCursorBufferPosition([2, 3])
+
+        atom.workspace.getActivePane().activateItem(editor)
+        expect(atom.workspace.getActiveTextEditor()).toBe(editor)
+        await editor.save()
+        expect(editor.getText()).toBe('1\n2  \n3\n')
+      })
+
+      it('[editor2 is activeEditor] remove WS with excluding active editor\'s cursor line', async () => {
+        editor.insertText('1  \n2  \n3  \n')
+        editor.setCursorBufferPosition([1, 3])
+        editor2.setCursorBufferPosition([2, 3])
+
+        atom.workspace.getActivePane().activateItem(editor2)
+        expect(atom.workspace.getActiveTextEditor()).toBe(editor2)
+        await editor2.save()
+        expect(editor.getText()).toBe('1\n2\n3  \n')
+      })
+
+      it('[either editor nor editor2 is activeEditor] remove WS but doesn\'t exclude cursor line for non active editor', async () => {
+        editor.insertText('1  \n2  \n3  \n')
+        editor.setCursorBufferPosition([1, 3])
+        editor2.setCursorBufferPosition([1, 3])
+
+        const editor3 = await atom.workspace.open()
+        expect(atom.workspace.getActiveTextEditor()).toBe(editor3)
+        await editor.save()
+        expect(editor.getText()).toBe('1\n2\n3\n') // all trainling-WS were removed
+      })
+    })
+  })
+
+  describe("when 'whitespace.ignoreWhitespaceOnCurrentLine' is false", () => {
+    beforeEach(() => atom.config.set('whitespace.ignoreWhitespaceOnCurrentLine', false))
+
+    it('removes the whitespace from all lines, including the current lines', async () => {
+      editor.insertText('1  \n2  \n3  \n')
+      editor.setCursorBufferPosition([1, 3])
+      editor.addCursorAtBufferPosition([2, 3])
+      await editor.save()
+      expect(editor.getText()).toBe('1\n2\n3\n')
+    })
+  })
+
+  describe("when 'whitespace.ignoreWhitespaceOnlyLines' is false", () => {
+    beforeEach(() => atom.config.set('whitespace.ignoreWhitespaceOnlyLines', false))
+
+    it('removes the whitespace from all lines, including the whitespace-only lines', async () => {
+      editor.insertText('1  \n2\t  \n\t \n3\n')
+
+      // move cursor to bottom for preventing effect of whitespace.ignoreWhitespaceOnCurrentLine
+      editor.moveToBottom()
+      await editor.save()
+      expect(editor.getText()).toBe('1\n2\n\n3\n')
+    })
+  })
+
+  describe("when 'whitespace.ignoreWhitespaceOnlyLines' is true", () => {
+    beforeEach(() => atom.config.set('whitespace.ignoreWhitespaceOnlyLines', true))
+
+    it('removes the whitespace from all lines, excluding the whitespace-only lines', async () => {
+      editor.insertText('1  \n2\t  \n\t \n3\n')
+
+      // move cursor to bottom for preventing effect of whitespace.ignoreWhitespaceOnCurrentLine
+      editor.moveToBottom()
+      await editor.save()
+      expect(editor.getText()).toBe('1\n2\n\t \n3\n')
+    })
+  })
+
+  describe("when 'whitespace.ensureSingleTrailingNewline' is true", () => {
+    beforeEach(() => atom.config.set('whitespace.ensureSingleTrailingNewline', true))
+
+    it('adds a trailing newline when there is no trailing newline', async () => {
+      editor.insertText('foo')
+      await editor.save()
+      expect(editor.getText()).toBe('foo\n')
+    })
+
+    it('removes extra trailing newlines and only keeps one', async () => {
+      editor.insertText('foo\n\n\n\n')
+      await editor.save()
+      expect(editor.getText()).toBe('foo\n')
+    })
+
+    it('leaves a buffer with a single trailing newline untouched', async () => {
+      editor.insertText('foo\nbar\n')
+      await editor.save()
+      expect(editor.getText()).toBe('foo\nbar\n')
+    })
+
+    it('leaves an empty buffer untouched', () => {
+      editor.insertText('')
+      editor.save()
+      expect(editor.getText()).toBe('')
+    })
+
+    it('leaves a buffer that is a single newline untouched', () => {
+      editor.insertText('\n')
+      editor.save()
+      expect(editor.getText()).toBe('\n')
+    })
+
+    it('does not move the cursor when the new line is added', async () => {
+      editor.insertText('foo\nboo')
+      editor.setCursorBufferPosition([0, 3])
+      await editor.save()
+      expect(editor.getText()).toBe('foo\nboo\n')
+      expect(editor.getCursorBufferPosition()).toEqual([0, 3])
+    })
+
+    it('preserves selections when saving on last line', async () => {
+      editor.insertText('foo')
+      editor.setCursorBufferPosition([0, 0])
+      editor.selectToEndOfLine()
+      const originalSelectionRange = editor.getLastSelection().getBufferRange()
+      await editor.save()
+      const newSelectionRange = editor.getLastSelection().getBufferRange()
+      expect(originalSelectionRange).toEqual(newSelectionRange)
+    })
+  })
+
+  describe("when 'whitespace.ensureSingleTrailingNewline' is false", () => {
+    beforeEach(() => atom.config.set('whitespace.ensureSingleTrailingNewline', false))
+
+    it('does not add trailing newline if ensureSingleTrailingNewline is false', () => {
+      editor.insertText('no trailing newline')
+      editor.save()
+      expect(editor.getText()).toBe('no trailing newline')
+    })
+  })
+
+  describe('GFM whitespace trimming', () => {
+    describe('when keepMarkdownLineBreakWhitespace is true', () => {
+      beforeEach(() => {
+        atom.config.set('whitespace.removeTrailingWhitespace', true)
+        atom.config.set('whitespace.ignoreWhitespaceOnCurrentLine', false)
+        atom.config.set('whitespace.keepMarkdownLineBreakWhitespace', true)
+
+        waitsForPromise(() => atom.packages.activatePackage('language-gfm'))
+
+        runs(() => editor.setGrammar(atom.grammars.grammarForScopeName('source.gfm')))
+      })
+
+      it('trims GFM text with a single space', async () => {
+        editor.insertText('foo \nline break!')
+        await editor.save()
+        expect(editor.getText()).toBe('foo\nline break!\n')
+      })
+
+      it('leaves GFM text with double spaces alone', async () => {
+        editor.insertText('foo  \nline break!')
+        await editor.save()
+        expect(editor.getText()).toBe('foo  \nline break!\n')
+      })
+
+      it('leaves GFM text with a more than two spaces', async () => {
+        editor.insertText('foo   \nline break!')
+        await editor.save()
+        expect(editor.getText()).toBe('foo   \nline break!\n')
+      })
+
+      it('trims empty lines', async () => {
+        editor.insertText('foo\n  ')
+        await editor.save()
+        expect(editor.getText()).toBe('foo\n')
+
+        editor.setText('foo\n ')
+        await editor.save()
+        expect(editor.getText()).toBe('foo\n')
+      })
+
+      it("respects 'whitespace.ignoreWhitespaceOnCurrentLine' setting", async () => {
+        atom.config.set('whitespace.ignoreWhitespaceOnCurrentLine', true)
+
+        editor.insertText('foo \nline break!')
+        editor.setCursorBufferPosition([0, 4])
+        await editor.save()
+        expect(editor.getText()).toBe('foo \nline break!\n')
+      })
+
+      it("respects 'whitespace.ignoreWhitespaceOnlyLines' setting", async () => {
+        atom.config.set('whitespace.ignoreWhitespaceOnlyLines', true)
+
+        editor.insertText('\t \nline break!')
+        await editor.save()
+        expect(editor.getText()).toBe('\t \nline break!\n')
+      })
+    })
+
+    describe('when keepMarkdownLineBreakWhitespace is false', () => {
+      beforeEach(() => {
+        atom.config.set('whitespace.ignoreWhitespaceOnCurrentLine', false)
+        atom.config.set('whitespace.keepMarkdownLineBreakWhitespace', false)
+
+        waitsForPromise(() => atom.packages.activatePackage('language-gfm'))
+
+        runs(() => editor.setGrammar(atom.grammars.grammarForScopeName('source.gfm')))
+      })
+
+      it('trims GFM text with a single space', async () => {
+        editor.insertText('foo \nline break!')
+        await editor.save()
+        expect(editor.getText()).toBe('foo\nline break!\n')
+      })
+
+      it('trims GFM text with two spaces', async () => {
+        editor.insertText('foo  \nline break!')
+        await editor.save()
+        expect(editor.getText()).toBe('foo\nline break!\n')
+      })
+
+      it('trims GFM text with a more than two spaces', async () => {
+        editor.insertText('foo   \nline break!')
+        await editor.save()
+        expect(editor.getText()).toBe('foo\nline break!\n')
+      })
+
+      it('trims empty lines', async () => {
+        editor.insertText('foo\n  ')
+        await editor.save()
+        expect(editor.getText()).toBe('foo\n')
+
+        editor.setText('foo\n ')
+        await editor.save()
+        expect(editor.getText()).toBe('foo\n')
+      })
+
+      it("respects 'whitespace.ignoreWhitespaceOnCurrentLine' setting", async () => {
+        atom.config.set('whitespace.ignoreWhitespaceOnCurrentLine', true)
+
+        editor.insertText('foo \nline break!')
+        editor.setCursorBufferPosition([0, 4])
+        await editor.save()
+        expect(editor.getText()).toBe('foo \nline break!\n')
+      })
+
+      it("respects 'whitespace.ignoreWhitespaceOnlyLines' setting", async () => {
+        atom.config.set('whitespace.ignoreWhitespaceOnlyLines', true)
+
+        editor.insertText('\t \nline break!')
+        await editor.save()
+        expect(editor.getText()).toBe('\t \nline break!\n')
+      })
+    })
+  })
+
+  describe('when the editor is split', () =>
+    it('does not throw exceptions when the editor is saved after the split is closed (regression)', async () => {
+      atom.workspace.getActivePane().splitRight({copyActiveItem: true})
+      atom.workspace.getPanes()[0].destroyItems()
+
+      editor = atom.workspace.getActivePaneItem()
+      editor.setText('test')
+      await editor.save()
+      expect(editor.getText()).toBe('test\n')
+    })
+  )
+
+  describe('when deactivated', () =>
+    it('does not remove trailing whitespace from editors opened after deactivation', async () => {
+      atom.config.set('whitespace.removeTrailingWhitespace', true)
+      await atom.packages.deactivatePackage('whitespace')
+
+      editor.setText('foo \n')
+      await editor.save()
+      expect(editor.getText()).toBe('foo \n')
+
+      await atom.workspace.open('sample2.txt')
+
+      editor = atom.workspace.getActiveTextEditor()
+      editor.setText('foo \n')
+      await editor.save()
+      expect(editor.getText()).toBe('foo \n')
+    })
+  )
+
+  describe("when the 'whitespace:remove-trailing-whitespace' command is run", () => {
+    beforeEach(() => buffer.setText('foo   \nbar\t   \n\nbaz'))
+
+    it('removes the trailing whitespace in the active editor', () => {
+      atom.commands.dispatch(workspaceElement, 'whitespace:remove-trailing-whitespace')
+      expect(buffer.getText()).toBe('foo\nbar\n\nbaz')
+    })
+
+    it('does not attempt to remove whitespace when the package is deactivated', async () => {
+      await atom.packages.deactivatePackage('whitespace')
+      expect(buffer.getText()).toBe('foo   \nbar\t   \n\nbaz')
+    })
+  })
+
+  describe("when the 'whitespace:save-with-trailing-whitespace' command is run", () => {
+    beforeEach(() => {
+      atom.config.set('whitespace.removeTrailingWhitespace', true)
+      atom.config.set('whitespace.ensureSingleTrailingNewline', false)
+      buffer.setText('foo   \nbar\t   \n\nbaz')
+    })
+
+    it('saves the file without removing any trailing whitespace', () =>
+      waitsFor((done) => {
+        buffer.onDidSave(() => {
+          expect(buffer.getText()).toBe('foo   \nbar\t   \n\nbaz')
+          expect(buffer.isModified()).toBe(false)
+          done()
+        })
+        atom.commands.dispatch(workspaceElement, 'whitespace:save-with-trailing-whitespace')
+      })
+    )
+  })
+
+  describe("when the 'whitespace:save-without-trailing-whitespace' command is run", () => {
+    beforeEach(() => {
+      atom.config.set('whitespace.removeTrailingWhitespace', false)
+      atom.config.set('whitespace.ensureSingleTrailingNewline', false)
+      buffer.setText('foo   \nbar\t   \n\nbaz')
+    })
+
+    it('saves the file and removes any trailing whitespace', () =>
+      waitsFor(function (done) {
+        buffer.onDidSave(() => {
+          expect(buffer.getText()).toBe('foo\nbar\n\nbaz')
+          expect(buffer.isModified()).toBe(false)
+          done()
+        })
+        atom.commands.dispatch(workspaceElement, 'whitespace:save-without-trailing-whitespace')
+      })
+    )
+  })
+
+  describe("when the 'whitespace:convert-tabs-to-spaces' command is run", () => {
+    it('removes leading \\t characters and replaces them with spaces using the configured tab length', () => {
+      editor.setTabLength(2)
+      buffer.setText('\ta\n\t\nb\t\nc\t\td')
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-tabs-to-spaces')
+      expect(buffer.getText()).toBe('  a\n  \nb\t\nc\t\td')
+
+      editor.setTabLength(3)
+      buffer.setText('\ta\n\t\nb\t\nc\t\td')
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-tabs-to-spaces')
+      expect(buffer.getText()).toBe('   a\n   \nb\t\nc\t\td')
+    })
+
+    it('changes the tab type to soft tabs', () => {
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-tabs-to-spaces')
+      expect(editor.getSoftTabs()).toBe(true)
+    })
+  })
+
+  describe("when the 'whitespace:convert-spaces-to-tabs' command is run", () => {
+    it('removes leading space characters and replaces them with hard tabs', () => {
+      editor.setTabLength(2)
+      buffer.setText('   a\n  \nb  \nc    d')
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-spaces-to-tabs')
+      expect(buffer.getText()).toBe('\t a\n\t\nb  \nc    d')
+
+      editor.setTabLength(3)
+      buffer.setText('     a\n   \nb   \nc      d')
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-spaces-to-tabs')
+      expect(buffer.getText()).toBe('\t  a\n\t\nb   \nc      d')
+    })
+
+    it('handles mixed runs of tabs and spaces correctly', () => {
+      editor.setTabLength(4)
+      buffer.setText('     \t    \t\ta   ')
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-spaces-to-tabs')
+      expect(buffer.getText()).toBe('\t\t\t\t\ta   ')
+    })
+
+    it('changes the tab type to hard tabs', () => {
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-spaces-to-tabs')
+      expect(editor.getSoftTabs()).toBe(false)
+    })
+
+    it("changes the tab length to user's tab-size", () => {
+      editor.setTabLength(4)
+      buffer.setText('    ')
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-spaces-to-tabs')
+      expect(editor.getTabLength()).toBe(2)
+    })
+  })
+
+  describe("when the 'whitespace:convert-all-tabs-to-spaces' command is run", () => {
+    it('removes all \\t characters and replaces them with spaces using the configured tab length', () => {
+      editor.setTabLength(2)
+      buffer.setText('\ta\n\t\nb\t\nc\t\td')
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-all-tabs-to-spaces')
+      expect(buffer.getText()).toBe('  a\n  \nb  \nc    d')
+
+      editor.setTabLength(3)
+      buffer.setText('\ta\n\t\nb\t\nc\t\td')
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-all-tabs-to-spaces')
+      expect(buffer.getText()).toBe('   a\n   \nb   \nc      d')
+    })
+
+    it('changes the tab type to soft tabs', () => {
+      atom.commands.dispatch(workspaceElement, 'whitespace:convert-all-tabs-to-spaces')
+      expect(editor.getSoftTabs()).toBe(true)
+    })
+  })
+})
diff --git a/packages/wrap-guide/.gitignore b/packages/wrap-guide/.gitignore
new file mode 100644
index 000000000..3c3629e64
--- /dev/null
+++ b/packages/wrap-guide/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/packages/wrap-guide/README.md b/packages/wrap-guide/README.md
new file mode 100644
index 000000000..1bfa87017
--- /dev/null
+++ b/packages/wrap-guide/README.md
@@ -0,0 +1,35 @@
+# Wrap Guide package
+
+The `wrap-guide` package places a vertical line in each editor at a certain column to guide your formatting, so lines do not exceed a certain width.
+
+By default, the wrap-guide is placed at the value of `editor.preferredLineLength` config setting. The 80th column is used as the fallback if the config value is unset.
+
+![](https://f.cloud.github.com/assets/671378/2241976/dbf6a8f6-9ced-11e3-8fef-d8a226301530.png)
+
+## Configuration
+
+You can customize where the column is placed for different file types by opening the Settings View and configuring the "Preferred Line Length" value. If you do not want the guide to show for a particular language, that can be set using scoped configuration. For example, to turn off the guide for GitHub-Flavored Markdown, you can add the following to your `config.cson`:
+
+```coffeescript
+'.source.gfm':
+  'wrap-guide':
+    'enabled': false
+```
+
+It is possible to configure the color and/or width of the line by adding the following CSS/LESS to your `styles.less`:
+
+```css
+atom-text-editor .wrap-guide {
+  width: 10px;
+  background-color: red;
+}
+```
+
+Multiple guide lines are also supported. For example, add the following to your `config.cson` to create four columns at the indicated positions:
+
+```coffeescript
+'wrap-guide':
+  'columns': [72, 80, 100, 120]
+```
+
+> Note: When using multiple guide lines, the right-most guide line functions as your `editor.preferredLineLength` setting.
diff --git a/packages/wrap-guide/lib/main.coffee b/packages/wrap-guide/lib/main.coffee
new file mode 100644
index 000000000..e2beff8d7
--- /dev/null
+++ b/packages/wrap-guide/lib/main.coffee
@@ -0,0 +1,26 @@
+{CompositeDisposable} = require 'atom'
+WrapGuideElement = require './wrap-guide-element'
+
+module.exports =
+  activate: ->
+    @subscriptions = new CompositeDisposable()
+    @wrapGuides = new Map()
+
+    @subscriptions.add atom.workspace.observeTextEditors (editor) =>
+      return if @wrapGuides.has(editor)
+
+      editorElement = atom.views.getView(editor)
+      wrapGuideElement = new WrapGuideElement(editor, editorElement)
+
+      @wrapGuides.set(editor, wrapGuideElement)
+      @subscriptions.add editor.onDidDestroy =>
+        @wrapGuides.get(editor).destroy()
+        @wrapGuides.delete(editor)
+
+  deactivate: ->
+    @subscriptions.dispose()
+    @wrapGuides.forEach (wrapGuide, editor) -> wrapGuide.destroy()
+    @wrapGuides.clear()
+
+  uniqueAscending: (list) ->
+    (list.filter((item, index) -> list.indexOf(item) is index)).sort((a, b) -> a - b)
diff --git a/packages/wrap-guide/lib/wrap-guide-element.coffee b/packages/wrap-guide/lib/wrap-guide-element.coffee
new file mode 100644
index 000000000..46f86362b
--- /dev/null
+++ b/packages/wrap-guide/lib/wrap-guide-element.coffee
@@ -0,0 +1,137 @@
+{CompositeDisposable} = require 'atom'
+
+module.exports =
+class WrapGuideElement
+  constructor: (@editor, @editorElement) ->
+    @subscriptions = new CompositeDisposable()
+    @configSubscriptions = new CompositeDisposable()
+    @element = document.createElement('div')
+    @element.setAttribute('is', 'wrap-guide')
+    @element.classList.add('wrap-guide-container')
+    @attachToLines()
+    @handleEvents()
+    @updateGuide()
+
+    @element.updateGuide = @updateGuide.bind(this)
+    @element.getDefaultColumn = @getDefaultColumn.bind(this)
+
+  attachToLines: ->
+    scrollView = @editorElement.querySelector('.scroll-view')
+    scrollView?.appendChild(@element)
+
+  handleEvents: ->
+    updateGuideCallback = => @updateGuide()
+
+    @handleConfigEvents()
+
+    @subscriptions.add atom.config.onDidChange 'editor.fontSize', =>
+      # Wait for editor to finish updating before updating wrap guide
+      # TODO: Use async/await once this file is converted to JS
+      @editorElement.getComponent().getNextUpdatePromise().then -> updateGuideCallback()
+
+    @subscriptions.add @editorElement.onDidChangeScrollLeft(updateGuideCallback)
+    @subscriptions.add @editor.onDidChangePath(updateGuideCallback)
+    @subscriptions.add @editor.onDidChangeGrammar =>
+      @configSubscriptions.dispose()
+      @handleConfigEvents()
+      updateGuideCallback()
+
+    @subscriptions.add @editor.onDidDestroy =>
+      @subscriptions.dispose()
+      @configSubscriptions.dispose()
+
+    @subscriptions.add @editorElement.onDidAttach =>
+      @attachToLines()
+      updateGuideCallback()
+
+  handleConfigEvents: ->
+    {uniqueAscending} = require './main'
+
+    updatePreferredLineLengthCallback = (args) =>
+      # ensure that the right-most wrap guide is the preferredLineLength
+      columns = atom.config.get('wrap-guide.columns', scope: @editor.getRootScopeDescriptor())
+      if columns.length > 0
+        columns[columns.length - 1] = args.newValue
+        columns = uniqueAscending(i for i in columns when i <= args.newValue)
+        atom.config.set 'wrap-guide.columns', columns,
+          scopeSelector: ".#{@editor.getGrammar().scopeName}"
+      @updateGuide()
+    @configSubscriptions.add atom.config.onDidChange(
+      'editor.preferredLineLength',
+      scope: @editor.getRootScopeDescriptor(),
+      updatePreferredLineLengthCallback
+    )
+
+    updateGuideCallback = => @updateGuide()
+    @configSubscriptions.add atom.config.onDidChange(
+      'wrap-guide.enabled',
+      scope: @editor.getRootScopeDescriptor(),
+      updateGuideCallback
+    )
+
+    updateGuidesCallback = (args) =>
+      # ensure that multiple guides stay sorted in ascending order
+      columns = uniqueAscending(args.newValue)
+      if columns?.length
+        atom.config.set('wrap-guide.columns', columns)
+        atom.config.set 'editor.preferredLineLength', columns[columns.length - 1],
+          scopeSelector: ".#{@editor.getGrammar().scopeName}"
+        @updateGuide()
+    @configSubscriptions.add atom.config.onDidChange(
+      'wrap-guide.columns',
+      scope: @editor.getRootScopeDescriptor(),
+      updateGuidesCallback
+    )
+
+  getDefaultColumn: ->
+    atom.config.get('editor.preferredLineLength', scope: @editor.getRootScopeDescriptor())
+
+  getGuidesColumns: (path, scopeName) ->
+    columns = atom.config.get('wrap-guide.columns', scope: @editor.getRootScopeDescriptor()) ? []
+    return columns if columns.length > 0
+    return [@getDefaultColumn()]
+
+  isEnabled: ->
+    atom.config.get('wrap-guide.enabled', scope: @editor.getRootScopeDescriptor()) ? true
+
+  hide: ->
+    @element.style.display = 'none'
+
+  show: ->
+    @element.style.display = 'block'
+
+  updateGuide: ->
+    if @isEnabled()
+      @updateGuides()
+    else
+      @hide()
+
+  updateGuides: ->
+    @removeGuides()
+    @appendGuides()
+    if @element.children.length
+      @show()
+    else
+      @hide()
+
+  destroy: ->
+    @element.remove()
+    @subscriptions.dispose()
+    @configSubscriptions.dispose()
+
+  removeGuides: ->
+    while @element.firstChild
+      @element.removeChild(@element.firstChild)
+
+  appendGuides: ->
+    columns = @getGuidesColumns(@editor.getPath(), @editor.getGrammar().scopeName)
+    for column in columns
+      @appendGuide(column) unless column < 0
+
+  appendGuide: (column) ->
+    columnWidth = @editorElement.getDefaultCharacterWidth() * column
+    columnWidth -= @editorElement.getScrollLeft()
+    guide = document.createElement('div')
+    guide.classList.add('wrap-guide')
+    guide.style.left = "#{Math.round(columnWidth)}px"
+    @element.appendChild(guide)
diff --git a/packages/wrap-guide/package-lock.json b/packages/wrap-guide/package-lock.json
new file mode 100644
index 000000000..88840000a
--- /dev/null
+++ b/packages/wrap-guide/package-lock.json
@@ -0,0 +1,16 @@
+{
+  "name": "wrap-guide",
+  "version": "0.41.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "wrap-guide",
+      "version": "0.41.0",
+      "license": "MIT",
+      "engines": {
+        "atom": "*"
+      }
+    }
+  }
+}
diff --git a/packages/wrap-guide/package.json b/packages/wrap-guide/package.json
new file mode 100644
index 000000000..642a205c7
--- /dev/null
+++ b/packages/wrap-guide/package.json
@@ -0,0 +1,25 @@
+{
+  "name": "wrap-guide",
+  "version": "0.41.0",
+  "main": "./lib/main",
+  "description": "Displays a vertical line at the 80th character in the editor.\nThis packages uses the config value of `editor.preferredLineLength` when set.",
+  "license": "MIT",
+  "repository": "https://github.com/pulsar-edit/pulsar",
+  "engines": {
+    "atom": "*"
+  },
+  "configSchema": {
+    "columns": {
+      "default": [],
+      "type": "array",
+      "items": {
+        "type": "integer"
+      },
+      "description": "Display guides at each of the listed character widths. Leave blank for one guide at your `editor.preferredLineLength`."
+    },
+    "enabled": {
+      "default": true,
+      "type": "boolean"
+    }
+  }
+}
diff --git a/packages/wrap-guide/spec/async-spec-helpers.js b/packages/wrap-guide/spec/async-spec-helpers.js
new file mode 100644
index 000000000..73002c049
--- /dev/null
+++ b/packages/wrap-guide/spec/async-spec-helpers.js
@@ -0,0 +1,103 @@
+/** @babel */
+
+export function beforeEach (fn) {
+  global.beforeEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+export function afterEach (fn) {
+  global.afterEach(function () {
+    const result = fn()
+    if (result instanceof Promise) {
+      waitsForPromise(() => result)
+    }
+  })
+}
+
+['it', 'fit', 'ffit', 'fffit'].forEach(function (name) {
+  module.exports[name] = function (description, fn) {
+    if (fn === undefined) {
+      global[name](description)
+      return
+    }
+
+    global[name](description, function () {
+      const result = fn()
+      if (result instanceof Promise) {
+        waitsForPromise(() => result)
+      }
+    })
+  }
+})
+
+export async function conditionPromise (condition, description = 'anonymous condition') {
+  const startTime = Date.now()
+
+  while (true) {
+    await timeoutPromise(100)
+
+    if (await condition()) {
+      return
+    }
+
+    if (Date.now() - startTime > 5000) {
+      throw new Error('Timed out waiting on ' + description)
+    }
+  }
+}
+
+export function timeoutPromise (timeout) {
+  return new Promise(function (resolve) {
+    global.setTimeout(resolve, timeout)
+  })
+}
+
+function waitsForPromise (fn) {
+  const promise = fn()
+  global.waitsFor('spec promise to resolve', function (done) {
+    promise.then(done, function (error) {
+      jasmine.getEnv().currentSpec.fail(error)
+      done()
+    })
+  })
+}
+
+export function emitterEventPromise (emitter, event, timeout = 15000) {
+  return new Promise((resolve, reject) => {
+    const timeoutHandle = setTimeout(() => {
+      reject(new Error(`Timed out waiting for '${event}' event`))
+    }, timeout)
+    emitter.once(event, () => {
+      clearTimeout(timeoutHandle)
+      resolve()
+    })
+  })
+}
+
+export function promisify (original) {
+  return function (...args) {
+    return new Promise((resolve, reject) => {
+      args.push((err, ...results) => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve(...results)
+        }
+      })
+
+      return original(...args)
+    })
+  }
+}
+
+export function promisifySome (obj, fnNames) {
+  const result = {}
+  for (const fnName of fnNames) {
+    result[fnName] = promisify(obj[fnName])
+  }
+  return result
+}
diff --git a/packages/wrap-guide/spec/helpers.js b/packages/wrap-guide/spec/helpers.js
new file mode 100644
index 000000000..3bdb2e963
--- /dev/null
+++ b/packages/wrap-guide/spec/helpers.js
@@ -0,0 +1,20 @@
+const helpers = {
+  getWrapGuides () {
+    wrapGuides = []
+    for (const editor of atom.workspace.getTextEditors()) {
+      const guide = editor.getElement().querySelector('.wrap-guide')
+      if (guide) wrapGuides.push(guide)
+    }
+    return wrapGuides
+  },
+
+  getLeftPosition (element) {
+    return parseInt(element.style.left)
+  },
+
+  getLeftPositions (elements) {
+    return Array.prototype.map.call(elements, element => helpers.getLeftPosition(element))
+  }
+}
+
+module.exports = helpers
diff --git a/packages/wrap-guide/spec/wrap-guide-element-spec.coffee b/packages/wrap-guide/spec/wrap-guide-element-spec.coffee
new file mode 100644
index 000000000..c112fa56f
--- /dev/null
+++ b/packages/wrap-guide/spec/wrap-guide-element-spec.coffee
@@ -0,0 +1,275 @@
+{getLeftPosition, getLeftPositions} = require './helpers'
+{uniqueAscending} = require '../lib/main'
+
+describe "WrapGuideElement", ->
+  [editor, editorElement, wrapGuide, workspaceElement] = []
+
+  beforeEach ->
+    workspaceElement = atom.views.getView(atom.workspace)
+    workspaceElement.style.height = "200px"
+    workspaceElement.style.width = "1500px"
+
+    jasmine.attachToDOM(workspaceElement)
+
+    waitsForPromise ->
+      atom.packages.activatePackage('wrap-guide')
+
+    waitsForPromise ->
+      atom.packages.activatePackage('language-javascript')
+
+    waitsForPromise ->
+      atom.packages.activatePackage('language-coffee-script')
+
+    waitsForPromise ->
+      atom.workspace.open('sample.js')
+
+    runs ->
+      editor = atom.workspace.getActiveTextEditor()
+      editorElement = editor.getElement()
+      wrapGuide = editorElement.querySelector(".wrap-guide-container")
+
+  describe ".activate", ->
+    getWrapGuides = ->
+      wrapGuides = []
+      atom.workspace.getTextEditors().forEach (editor) ->
+        guides = editor.getElement().querySelectorAll(".wrap-guide")
+        wrapGuides.push(guides) if guides
+      wrapGuides
+
+    it "appends a wrap guide to all existing and new editors", ->
+      expect(atom.workspace.getTextEditors().length).toBe 1
+
+      expect(getWrapGuides().length).toBe 1
+      expect(getLeftPosition(getWrapGuides()[0][0])).toBeGreaterThan(0)
+
+      atom.workspace.getActivePane().splitRight(copyActiveItem: true)
+      expect(atom.workspace.getTextEditors().length).toBe 2
+      expect(getWrapGuides().length).toBe 2
+      expect(getLeftPosition(getWrapGuides()[0][0])).toBeGreaterThan(0)
+      expect(getLeftPosition(getWrapGuides()[1][0])).toBeGreaterThan(0)
+
+    it "positions the guide at the configured column", ->
+      width = editor.getDefaultCharWidth() * wrapGuide.getDefaultColumn()
+      expect(width).toBeGreaterThan(0)
+      expect(Math.abs(getLeftPosition(wrapGuide.firstChild) - width)).toBeLessThan 1
+      expect(wrapGuide).toBeVisible()
+
+    it "appends multiple wrap guides to all existing and new editors", ->
+      columns = [10, 20, 30]
+      atom.config.set("wrap-guide.columns", columns)
+
+      waitsForPromise ->
+        editorElement.getComponent().getNextUpdatePromise()
+
+      runs ->
+        expect(atom.workspace.getTextEditors().length).toBe 1
+        expect(getWrapGuides().length).toBe 1
+        positions = getLeftPositions(getWrapGuides()[0])
+        expect(positions.length).toBe(columns.length)
+        expect(positions[0]).toBeGreaterThan(0)
+        expect(positions[1]).toBeGreaterThan(positions[0])
+        expect(positions[2]).toBeGreaterThan(positions[1])
+
+        atom.workspace.getActivePane().splitRight(copyActiveItem: true)
+        expect(atom.workspace.getTextEditors().length).toBe 2
+        expect(getWrapGuides().length).toBe 2
+        pane1_positions = getLeftPositions(getWrapGuides()[0])
+        expect(pane1_positions.length).toBe(columns.length)
+        expect(pane1_positions[0]).toBeGreaterThan(0)
+        expect(pane1_positions[1]).toBeGreaterThan(pane1_positions[0])
+        expect(pane1_positions[2]).toBeGreaterThan(pane1_positions[1])
+        pane2_positions = getLeftPositions(getWrapGuides()[1])
+        expect(pane2_positions.length).toBe(pane1_positions.length)
+        expect(pane2_positions[0]).toBe(pane1_positions[0])
+        expect(pane2_positions[1]).toBe(pane1_positions[1])
+        expect(pane2_positions[2]).toBe(pane1_positions[2])
+
+    it "positions multiple guides at the configured columns", ->
+      columnCount = 5
+      columns = (c * 10 for c in [1..columnCount])
+      atom.config.set("wrap-guide.columns", columns)
+      waitsForPromise ->
+        editorElement.getComponent().getNextUpdatePromise()
+
+      runs ->
+        positions = getLeftPositions(getWrapGuides()[0])
+        expect(positions.length).toBe(columnCount)
+        expect(wrapGuide.children.length).toBe(columnCount)
+
+        for i in columnCount - 1
+          width = editor.getDefaultCharWidth() * columns[i]
+          expect(width).toBeGreaterThan(0)
+          expect(Math.abs(getLeftPosition(wrapGuide.children[i]) - width)).toBeLessThan 1
+        expect(wrapGuide).toBeVisible()
+
+  describe "when the font size changes", ->
+    it "updates the wrap guide position", ->
+      initial = getLeftPosition(wrapGuide.firstChild)
+      expect(initial).toBeGreaterThan(0)
+      fontSize = atom.config.get("editor.fontSize")
+      atom.config.set("editor.fontSize", fontSize + 10)
+
+      waitsForPromise ->
+        editorElement.getComponent().getNextUpdatePromise()
+
+      runs ->
+        expect(getLeftPosition(wrapGuide.firstChild)).toBeGreaterThan(initial)
+        expect(wrapGuide.firstChild).toBeVisible()
+
+    it "updates the wrap guide position for hidden editors when they become visible", ->
+      initial = getLeftPosition(wrapGuide.firstChild)
+      expect(initial).toBeGreaterThan(0)
+
+      waitsForPromise ->
+        atom.workspace.open()
+
+      runs ->
+        fontSize = atom.config.get("editor.fontSize")
+        atom.config.set("editor.fontSize", fontSize + 10)
+        atom.workspace.getActivePane().activatePreviousItem()
+
+        waitsForPromise ->
+          editorElement.getComponent().getNextUpdatePromise()
+
+        runs ->
+          expect(getLeftPosition(wrapGuide.firstChild)).toBeGreaterThan(initial)
+          expect(wrapGuide.firstChild).toBeVisible()
+
+  describe "when the column config changes", ->
+    it "updates the wrap guide position", ->
+      initial = getLeftPosition(wrapGuide.firstChild)
+      expect(initial).toBeGreaterThan(0)
+      column = atom.config.get("editor.preferredLineLength")
+      atom.config.set("editor.preferredLineLength", column + 10)
+      expect(getLeftPosition(wrapGuide.firstChild)).toBeGreaterThan(initial)
+      expect(wrapGuide).toBeVisible()
+
+  describe "when the preferredLineLength changes", ->
+    it "updates the wrap guide positions", ->
+      initial = [10, 15, 20, 30]
+      atom.config.set 'wrap-guide.columns', initial,
+        scopeSelector: ".#{editor.getGrammar().scopeName}"
+      waitsForPromise ->
+        editorElement.getComponent().getNextUpdatePromise()
+
+      runs ->
+        atom.config.set 'editor.preferredLineLength', 15,
+          scopeSelector: ".#{editor.getGrammar().scopeName}"
+        waitsForPromise ->
+          editorElement.getComponent().getNextUpdatePromise()
+
+        runs ->
+          columns = atom.config.get('wrap-guide.columns', scope: editor.getRootScopeDescriptor())
+          expect(columns.length).toBe(2)
+          expect(columns[0]).toBe(10)
+          expect(columns[1]).toBe(15)
+
+  describe "when the columns config changes", ->
+    it "updates the wrap guide positions", ->
+      initial = getLeftPositions(wrapGuide.children)
+      expect(initial.length).toBe(1)
+      expect(initial[0]).toBeGreaterThan(0)
+
+      columns = [10, 20, 30]
+      atom.config.set("wrap-guide.columns", columns)
+      waitsForPromise ->
+        editorElement.getComponent().getNextUpdatePromise()
+
+      runs ->
+        positions = getLeftPositions(wrapGuide.children)
+        expect(positions.length).toBe(columns.length)
+        expect(positions[0]).toBeGreaterThan(0)
+        expect(positions[1]).toBeGreaterThan(positions[0])
+        expect(positions[2]).toBeGreaterThan(positions[1])
+        expect(wrapGuide).toBeVisible()
+
+    it "updates the preferredLineLength", ->
+      initial = atom.config.get('editor.preferredLineLength', scope: editor.getRootScopeDescriptor())
+      atom.config.set("wrap-guide.columns", [initial, initial + 10])
+      waitsForPromise ->
+        editorElement.getComponent().getNextUpdatePromise()
+
+      runs ->
+        length = atom.config.get('editor.preferredLineLength', scope: editor.getRootScopeDescriptor())
+        expect(length).toBe(initial + 10)
+
+    it "keeps guide positions unique and in ascending order", ->
+      initial = getLeftPositions(wrapGuide.children)
+      expect(initial.length).toBe(1)
+      expect(initial[0]).toBeGreaterThan(0)
+
+      reverseColumns = [30, 20, 10]
+      columns = [reverseColumns[reverseColumns.length - 1], reverseColumns..., reverseColumns[0]]
+      uniqueColumns = uniqueAscending(columns)
+      expect(uniqueColumns.length).toBe(3)
+      expect(uniqueColumns[0]).toBeGreaterThan(0)
+      expect(uniqueColumns[1]).toBeGreaterThan(uniqueColumns[0])
+      expect(uniqueColumns[2]).toBeGreaterThan(uniqueColumns[1])
+
+      atom.config.set("wrap-guide.columns", columns)
+      waitsForPromise ->
+        editorElement.getComponent().getNextUpdatePromise()
+
+      runs ->
+        positions = getLeftPositions(wrapGuide.children)
+        expect(positions.length).toBe(uniqueColumns.length)
+        expect(positions[0]).toBeGreaterThan(0)
+        expect(positions[1]).toBeGreaterThan(positions[0])
+        expect(positions[2]).toBeGreaterThan(positions[1])
+        expect(wrapGuide).toBeVisible()
+
+  describe "when the editor's scroll left changes", ->
+    it "updates the wrap guide position to a relative position on screen", ->
+      editor.setText("a long line which causes the editor to scroll")
+      editorElement.style.width = "100px"
+
+      waitsFor -> editorElement.component.getMaxScrollLeft() > 10
+
+      runs ->
+        initial = getLeftPosition(wrapGuide.firstChild)
+        expect(initial).toBeGreaterThan(0)
+        editorElement.setScrollLeft(10)
+        expect(getLeftPosition(wrapGuide.firstChild)).toBe(initial - 10)
+        expect(wrapGuide.firstChild).toBeVisible()
+
+  describe "when the editor's grammar changes", ->
+    it "updates the wrap guide position", ->
+      atom.config.set('editor.preferredLineLength', 20, scopeSelector: '.source.js')
+      initial = getLeftPosition(wrapGuide.firstChild)
+      expect(initial).toBeGreaterThan(0)
+      expect(wrapGuide).toBeVisible()
+
+      editor.setGrammar(atom.grammars.grammarForScopeName('text.plain.null-grammar'))
+      expect(getLeftPosition(wrapGuide.firstChild)).toBeGreaterThan(initial)
+      expect(wrapGuide).toBeVisible()
+
+    it 'listens for preferredLineLength updates for the new grammar', ->
+      editor.setGrammar(atom.grammars.grammarForScopeName('source.coffee'))
+      initial = getLeftPosition(wrapGuide.firstChild)
+      atom.config.set('editor.preferredLineLength', 20, scopeSelector: '.source.coffee')
+      expect(getLeftPosition(wrapGuide.firstChild)).toBeLessThan(initial)
+
+    it 'listens for wrap-guide.enabled updates for the new grammar', ->
+      editor.setGrammar(atom.grammars.grammarForScopeName('source.coffee'))
+      expect(wrapGuide).toBeVisible()
+      atom.config.set('wrap-guide.enabled', false, scopeSelector: '.source.coffee')
+      expect(wrapGuide).not.toBeVisible()
+
+  describe 'scoped config', ->
+    it '::getDefaultColumn returns the scope-specific column value', ->
+      atom.config.set('editor.preferredLineLength', 132, scopeSelector: '.source.js')
+
+      expect(wrapGuide.getDefaultColumn()).toBe 132
+
+    it 'updates the guide when the scope-specific column changes', ->
+      initial = getLeftPosition(wrapGuide.firstChild)
+      column = atom.config.get('editor.preferredLineLength', scope: editor.getRootScopeDescriptor())
+      atom.config.set('editor.preferredLineLength', column + 10, scope: '.source.js')
+      expect(getLeftPosition(wrapGuide.firstChild)).toBeGreaterThan(initial)
+
+    it 'updates the guide when wrap-guide.enabled is set to false', ->
+      expect(wrapGuide).toBeVisible()
+
+      atom.config.set('wrap-guide.enabled', false, scopeSelector: '.source.js')
+
+      expect(wrapGuide).not.toBeVisible()
diff --git a/packages/wrap-guide/spec/wrap-guide-spec.js b/packages/wrap-guide/spec/wrap-guide-spec.js
new file mode 100644
index 000000000..92d6f7c6b
--- /dev/null
+++ b/packages/wrap-guide/spec/wrap-guide-spec.js
@@ -0,0 +1,48 @@
+const {getWrapGuides, getLeftPosition} = require('./helpers')
+
+const {it, fit, ffit, afterEach, beforeEach} = require('./async-spec-helpers') // eslint-disable-line no-unused-vars
+
+describe('Wrap Guide', () => {
+  let editor, editorElement, wrapGuide = []
+
+  beforeEach(async () => {
+    await atom.packages.activatePackage('wrap-guide')
+
+    editor = await atom.workspace.open('sample.js')
+    editorElement = editor.getElement()
+    wrapGuide = editorElement.querySelector('.wrap-guide-container')
+
+    jasmine.attachToDOM(atom.views.getView(atom.workspace))
+  })
+
+  describe('package activation', () => {
+    it('appends a wrap guide to all existing and new editors', () => {
+      expect(atom.workspace.getTextEditors().length).toBe(1)
+      expect(getWrapGuides().length).toBe(1)
+      expect(getLeftPosition(getWrapGuides()[0])).toBeGreaterThan(0)
+
+      atom.workspace.getActivePane().splitRight({copyActiveItem: true})
+      expect(atom.workspace.getTextEditors().length).toBe(2)
+      expect(getWrapGuides().length).toBe(2)
+      expect(getLeftPosition(getWrapGuides()[0])).toBeGreaterThan(0)
+      expect(getLeftPosition(getWrapGuides()[1])).toBeGreaterThan(0)
+    })
+
+    it('positions the guide at the configured column', () => {
+      width = editor.getDefaultCharWidth() * wrapGuide.getDefaultColumn()
+      expect(width).toBeGreaterThan(0)
+      expect(Math.abs(getLeftPosition(wrapGuide.firstChild) - width)).toBeLessThan(1)
+      expect(wrapGuide.firstChild).toBeVisible()
+    })
+  })
+
+  describe('package deactivation', () => {
+    beforeEach(async () => {
+      await atom.packages.deactivatePackage('wrap-guide')
+    })
+
+    it('disposes of all wrap guides', () => {
+      expect(getWrapGuides().length).toBe(0)
+    })
+  })
+})
diff --git a/packages/wrap-guide/styles/wrap-guide.less b/packages/wrap-guide/styles/wrap-guide.less
new file mode 100644
index 000000000..554753d66
--- /dev/null
+++ b/packages/wrap-guide/styles/wrap-guide.less
@@ -0,0 +1,14 @@
+@import "syntax-variables";
+
+atom-text-editor {
+  .wrap-guide {
+    height: 100%;
+    width: 1px;
+    z-index: 3;
+    position: absolute;
+    top: 0;
+    background-color: @syntax-wrap-guide-color;
+    -webkit-transform: translateZ(0);
+    pointer-events: none;
+  }
+}
diff --git a/ppm b/ppm
index e09cc63b8..915cbf6e5 160000
--- a/ppm
+++ b/ppm
@@ -1 +1 @@
-Subproject commit e09cc63b85616d19a95a10b02a632ecf48741056
+Subproject commit 915cbf6e5f9ea1141ef5dcaf86343237e17bf380
diff --git a/pulsar.sh b/pulsar.sh
index 88b5153ec..7f501f542 100755
--- a/pulsar.sh
+++ b/pulsar.sh
@@ -16,7 +16,7 @@ ATOM_ADD=false
 ATOM_NEW_WINDOW=false
 EXIT_CODE_OVERRIDE=
 
-while getopts ":anwtfvh-:" opt; do
+while getopts ":anwtfvhp-:" opt; do
   case "$opt" in
     -)
       case "${OPTARG}" in
@@ -30,10 +30,9 @@ while getopts ":anwtfvh-:" opt; do
           WAIT=1
           ;;
         help|version)
-          REDIRECT_STDERR=1
           EXPECT_OUTPUT=1
           ;;
-        foreground|benchmark|benchmark-test|test)
+        foreground|benchmark|benchmark-test|test|package)
           EXPECT_OUTPUT=1
           ;;
         enable-electron-logging)
@@ -50,11 +49,7 @@ while getopts ":anwtfvh-:" opt; do
     w)
       WAIT=1
       ;;
-    h|v)
-      REDIRECT_STDERR=1
-      EXPECT_OUTPUT=1
-      ;;
-    f|t)
+    f|t|h|v|p)
       EXPECT_OUTPUT=1
       ;;
   esac
@@ -78,7 +73,9 @@ if [ $OS == 'Mac' ]; then
   else
     SCRIPT="$0"
   fi
-  ATOM_APP="$(dirname "$(dirname "$(dirname "$(dirname "$SCRIPT")")")")"
+
+  ATOM_APP="$(dirname "$(dirname "$(dirname "$SCRIPT")")")"
+
   if [ "$ATOM_APP" == . ]; then
     unset ATOM_APP
   else
@@ -121,7 +118,7 @@ if [ $OS == 'Mac' ]; then
       exit ${ATOM_EXIT}
     fi
   else
-    open -a "$PULSAR_PATH/$ATOM_APP_NAME" -n --args --executed-from="$(pwd)" --pid=$$ --path-environment="$PATH" "$@"
+    open -a "$PULSAR_PATH/$ATOM_APP_NAME" -n -g --args --executed-from="$(pwd)" --pid=$$ --path-environment="$PATH" "$@"
   fi
 elif [ $OS == 'Linux' ]; then
   SCRIPT=$(readlink -f "$0")
@@ -149,7 +146,7 @@ elif [ $OS == 'Linux' ]; then
   [ -x "$PULSAR_PATH" ] || PULSAR_PATH="$TMPDIR/pulsar-build/Pulsar/pulsar"
 
   if [ $EXPECT_OUTPUT ]; then
-    "$PULSAR_PATH" --executed-from="$(pwd)" --pid=$$ "$@"
+    "$PULSAR_PATH" --executed-from="$(pwd)" --pid=$$ "$@" --no-sandbox
     ATOM_EXIT=$?
     if [ ${ATOM_EXIT} -eq 0 ] && [ -n "${EXIT_CODE_OVERRIDE}" ]; then
       exit "${EXIT_CODE_OVERRIDE}"
@@ -158,7 +155,7 @@ elif [ $OS == 'Linux' ]; then
     fi
   else
     (
-    nohup "$PULSAR_PATH" --executed-from="$(pwd)" --pid=$$ "$@" > "$ATOM_HOME/nohup.out" 2>&1
+    nohup "$PULSAR_PATH" --executed-from="$(pwd)" --pid=$$ "$@" --no-sandbox > "$ATOM_HOME/nohup.out" 2>&1
     if [ $? -ne 0 ]; then
       cat "$ATOM_HOME/nohup.out"
       exit $?
diff --git a/resources/app-icons/beta.icns b/resources/app-icons/beta.icns
new file mode 100644
index 000000000..9492efdd0
Binary files /dev/null and b/resources/app-icons/beta.icns differ
diff --git a/resources/app-icons/beta.ico b/resources/app-icons/beta.ico
index 7ba53236f..e25a62f34 100644
Binary files a/resources/app-icons/beta.ico and b/resources/app-icons/beta.ico differ
diff --git a/resources/app-icons/beta.svg b/resources/app-icons/beta.svg
new file mode 100644
index 000000000..64f0bb492
--- /dev/null
+++ b/resources/app-icons/beta.svg
@@ -0,0 +1,16 @@
+<svg version="1.1" viewBox="0 0 391 391" xmlns="http://www.w3.org/2000/svg"><style type="text/css">.st0{fill:#662D91;}
+	.st1{fill:#FFFFFF;}
+	.st2{fill:#36204F;}
+	.st3{fill:url(#SVGID_1_);}
+	.st4{fill:url(#SVGID_00000054257414562981228120000001574687163085119653_);}
+	.st5{fill:url(#SVGID_00000072998375269293171440000018213926298751993760_);}
+	.st6{fill:url(#SVGID_00000014615508004562851300000006094527432216711301_);}
+	.st7{fill:url(#SVGID_00000013161522689771818110000010315873926876005009_);}
+	.st8{clip-path:url(#SVGID_00000144319605520673463540000011190800844866639500_);fill:#FFFFFF;}
+	.st9{clip-path:url(#SVGID_00000144319605520673463540000011190800844866639500_);fill:#3375C6;}
+	.st10{opacity:0.5;fill:url(#SVGID_00000103236622958962217100000000896203148096719288_);}
+	.st11{opacity:0.39;fill:url(#SVGID_00000001625125440351536700000010266301937016667048_);}
+	.st12{fill:url(#SVGID_00000124141742389249847090000005945901909340613275_);}
+	.st13{fill:url(#XMLID_00000072986874545207087730000001673768990059418281_);}
+	.st14{fill:url(#XMLID_00000053514400916280977180000006774919194279780226_);}
+	.st15{fill:url(#XMLID_00000172411063983058279480000005865108757823933591_);}</style><circle class="st0" cx="195.5" cy="195.5" r="195.5"/><g transform="matrix(1.2397 0 0 1.2397 1292.2 2009.7)"><circle class="st1" cx="-884.7" cy="-1463.5" r="25.3"/><path class="st1" d="m-913.2-1441.7c-1.7 0-3.4 0.7-4.8 2-2 2-2.5 4.9-1.5 7.3l-13.6 5.3-56.3 67 1.2 1.2 67-56.3 5.3-13.6c0.8 0.3 1.7 0.5 2.6 0.5 1.7 0 3.4-0.7 4.7-2 2.6-2.6 2.6-6.9 0-9.5-1.2-1.3-2.9-1.9-4.6-1.9z"/><path class="st1" d="m-924-1367.9c6.4 0 13.2-0.8 20.2-2.4 24.6-5.5 49.8-20.2 70.9-41.4 14.2-14.2 25.7-30.5 33.3-47.2l-6.6-6.2-0.5 1.3-0.3 0.7c-7.2 16-18.2 31.8-31.9 45.4-20.1 20.1-43.8 34-66.8 39.1-17.2 3.9-32.4 2.5-43.9-3.9l-6.9 5.8c9.1 5.9 20.1 8.8 32.5 8.8z"/><path class="st1" d="m-898.4-1392.7c-7.8-4.5-13.9-9-21.1-15l-6.6 5.5c5.8 5 11.9 9.5 18.2 13.6 2.4-0.8 7.4-2.8 9.5-4.1z"/><path class="st1" d="m-848.3-1511.8-5.3 13.6c-0.8-0.3-1.7-0.5-2.6-0.5-1.7 0-3.4 0.7-4.7 2-2.6 2.6-2.6 6.9 0 9.5 1.3 1.3 3 2 4.8 2 1.7 0 3.4-0.7 4.8-2 2-2 2.5-4.9 1.5-7.3l13.6-5.3 56.3-67-1.2-1.2z"/><path class="st1" d="m-922.8-1444.5c0.4-0.4 0.9-0.8 1.4-1.1-2.6-5.4-4.2-11.4-4.2-17.8 0-22.5 18.3-40.8 40.8-40.8 6.4 0 12.4 1.5 17.8 4.2 0.4-0.5 0.7-1 1.1-1.4 2.1-2.1 4.7-3.4 7.6-3.8l1.1-2.9c-8.1-5-17.5-7.9-27.7-7.9-29.1 0-52.7 23.6-52.7 52.7 0 10.2 2.9 19.6 8 27.7l2.9-1.1c0.5-3 1.8-5.7 3.9-7.8z"/><path class="st1" d="m-846.6-1482.5c-0.4 0.4-0.9 0.8-1.4 1.1 2.6 5.4 4.2 11.4 4.2 17.8 0 22.5-18.3 40.8-40.8 40.8-6.4 0-12.4-1.5-17.8-4.2-0.4 0.5-0.7 1-1.1 1.4-2.1 2.1-4.7 3.4-7.6 3.8l-1.1 2.9c8.1 5 17.5 7.9 27.7 7.9 29.1 0 52.7-23.6 52.7-52.7 0-10.2-2.9-19.6-7.9-27.7l-2.9 1.1c-0.6 3-1.9 5.7-4 7.8z"/><path class="st1" d="m-964.9-1543.7c-14.1 14.1-18.7 35.8-13.1 61.1 4.7 20.7 15.8 41.8 31.8 60.5l5.5-6.6c-14.6-17.5-24.8-36.9-29.1-55.8-5-22.3-1.2-41.2 10.8-53.2 23.1-23.1 69.9-14.5 109 18.3l6.6-5.5c-42.6-36.3-95.1-45.2-121.5-18.8z"/><path class="st1" d="m-823.3-1504.9-5.5 6.6c32.8 39.1 41.4 86 18.3 109-10.9 10.9-28 15-47.8 11.8-3.7 2.3-7.5 4.4-11.3 6.3 8.4 2.2 16.4 3.4 24 3.4 16.6 0 30.9-5.2 41.1-15.4 26.4-26.5 17.5-79-18.8-121.7z"/><path class="st1" d="m-865.6-1556.7c-24.6 5.5-49.8 20.2-70.9 41.4-40.2 40.2-54.4 92.9-35.1 123.6l5.8-6.9c-15.2-27.6-1.1-74.3 35.3-110.7 20.1-20.1 43.8-34 66.8-39.1 17.2-3.9 32.4-2.5 43.9 3.8l6.9-5.8c-13.7-8.7-32-11-52.7-6.3z"/><path class="st1" d="m-797.8-1535.3-5.8 6.9c4.8 8.8 6.7 19.8 5.6 32.2 2.5 4 4.8 7.9 6.8 11.9 4.2-20 1.9-37.7-6.6-51z"/></g></svg>
diff --git a/resources/icons/128x128.png b/resources/icons/128x128.png
new file mode 100644
index 000000000..e9802618e
Binary files /dev/null and b/resources/icons/128x128.png differ
diff --git a/resources/icons/16x16.png b/resources/icons/16x16.png
new file mode 100644
index 000000000..35e34b0ae
Binary files /dev/null and b/resources/icons/16x16.png differ
diff --git a/resources/icons/22x22.png b/resources/icons/22x22.png
new file mode 100644
index 000000000..f8cfb1516
Binary files /dev/null and b/resources/icons/22x22.png differ
diff --git a/resources/icons/24x24.png b/resources/icons/24x24.png
new file mode 100644
index 000000000..66ac5ef42
Binary files /dev/null and b/resources/icons/24x24.png differ
diff --git a/resources/icons/256x256.png b/resources/icons/256x256.png
new file mode 100644
index 000000000..22a44b648
Binary files /dev/null and b/resources/icons/256x256.png differ
diff --git a/resources/icons/32x32.png b/resources/icons/32x32.png
new file mode 100644
index 000000000..276438d6b
Binary files /dev/null and b/resources/icons/32x32.png differ
diff --git a/resources/icons/384x384.png b/resources/icons/384x384.png
new file mode 100644
index 000000000..4e7a55ec2
Binary files /dev/null and b/resources/icons/384x384.png differ
diff --git a/resources/icons/48x48.png b/resources/icons/48x48.png
new file mode 100644
index 000000000..d2984bbf1
Binary files /dev/null and b/resources/icons/48x48.png differ
diff --git a/resources/icons/64x64.png b/resources/icons/64x64.png
new file mode 100644
index 000000000..1b9d544a7
Binary files /dev/null and b/resources/icons/64x64.png differ
diff --git a/resources/linux/dev.pulsar_edit.Pulsar.metainfo.xml b/resources/linux/dev.pulsar_edit.Pulsar.metainfo.xml
new file mode 100644
index 000000000..b57ea99aa
--- /dev/null
+++ b/resources/linux/dev.pulsar_edit.Pulsar.metainfo.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+  <id>dev.pulsar_edit.Pulsar</id>
+  <name>Pulsar</name>
+  <developer_name>Pulsar Edit</developer_name>
+  <summary>A Community-led Hyper-Hackable Text Editor</summary>
+  <metadata_license>MIT</metadata_license>
+  <project_license>MIT</project_license>
+  <url type="homepage">https://pulsar-edit.dev</url>
+  <url type="bugtracker">https://github.com/pulsar-edit/pulsar/issues/</url>
+  <update_contact>admin@pulsar-edit.dev</update_contact>
+  <description>
+    <p>Pulsar aims to not only reach feature parity with the original Atom, but to bring Pulsar into the 21st century by updating the underlying architecture, and supporting modern features.</p>
+  </description>
+  <screenshots>
+    <screenshot>
+      <image type="source">https://raw.githubusercontent.com/pulsar-edit/pulsar/master/resources/readme.png</image>
+    </screenshot>
+  </screenshots>
+  <kudos>
+    <kudo>HiDpiIcon</kudo>
+  </kudos>
+  <content_rating type="oars-1.1" />
+</component>
diff --git a/resources/pulsar.png b/resources/pulsar.png
index e2db9a40d..e8009462b 100644
Binary files a/resources/pulsar.png and b/resources/pulsar.png differ
diff --git a/resources/readme.png b/resources/readme.png
new file mode 100644
index 000000000..8e821932b
Binary files /dev/null and b/resources/readme.png differ
diff --git a/resources/win/pulsar.cmd b/resources/win/pulsar.cmd
index 0f055f883..8776fa2de 100644
--- a/resources/win/pulsar.cmd
+++ b/resources/win/pulsar.cmd
@@ -16,6 +16,8 @@ FOR %%a IN (%*) DO (
   IF /I "%%a"=="--test"                     SET EXPECT_OUTPUT=YES
   IF /I "%%a"=="--benchmark"                SET EXPECT_OUTPUT=YES
   IF /I "%%a"=="--benchmark-test"           SET EXPECT_OUTPUT=YES
+  IF /I "%%a"=="-p"                         SET EXPECT_OUTPUT=YES
+  IF /I "%%a"=="--package"                  SET EXPECT_OUTPUT=YES
   IF /I "%%a"=="-v"                         SET EXPECT_OUTPUT=YES
   IF /I "%%a"=="--version"                  SET EXPECT_OUTPUT=YES
   IF /I "%%a"=="--enable-electron-logging"  SET ELECTRON_ENABLE_LOGGING=YES
@@ -41,11 +43,11 @@ IF "%ATOM_ADD%"=="YES" (
 
 IF "%EXPECT_OUTPUT%"=="YES" (
   IF "%WAIT%"=="YES" (
-    powershell -noexit "Start-Process -FilePath \"%~dp0\..\..\<%= atomExeName %>\" -ArgumentList \"--pid=$pid $env:PSARGS\" ; wait-event"
+    powershell -noexit "Start-Process -FilePath \"%~dp0\..\Pulsar.exe\" -ArgumentList \"--pid=$pid $env:PSARGS\" ; wait-event"
     exit 0
   ) ELSE (
-    "%~dp0\..\..\<%= atomExeName %>" %*
+    "%~dp0\..\Pulsar.exe" %*
   )
 ) ELSE (
-  "%~dp0\..\app\apm\bin\node.exe" "%~dp0\pulsar.js" "<%= atomExeName %>" %*
+  "%~dp0\app\ppm\bin\node.exe" "%~dp0\pulsar.js" "Pulsar.exe" %*
 )
diff --git a/resources/win/pulsar.js b/resources/win/pulsar.js
index 4c4a099e9..97bd131bf 100644
--- a/resources/win/pulsar.js
+++ b/resources/win/pulsar.js
@@ -1,7 +1,7 @@
 var path = require('path');
 var spawn = require('child_process').spawn;
 
-var atomCommandPath = path.resolve(__dirname, '..', '..', process.argv[2]);
+var atomCommandPath = path.resolve(__dirname, '..', process.argv[2]);
 var args = process.argv.slice(3);
 args.unshift('--executed-from', process.cwd());
 var options = { detached: true, stdio: 'ignore' };
diff --git a/script/electron-builder.js b/script/electron-builder.js
index 67200df09..0c3d194fb 100644
--- a/script/electron-builder.js
+++ b/script/electron-builder.js
@@ -2,6 +2,7 @@ const path = require('path')
 const normalizePackageData = require('normalize-package-data');
 const fs = require("fs/promises");
 const generateMetadata = require('./generate-metadata-for-builder')
+const macBundleDocumentTypes = require("./mac-bundle-document-types.js");
 
 // Monkey-patch to not remove things I explicitly didn't say so
 // See: https://github.com/electron-userland/electron-builder/issues/6957
@@ -41,35 +42,26 @@ const Platform = builder.Platform
 
 const pngIcon = 'resources/app-icons/beta.png'
 const icoIcon = 'resources/app-icons/beta.ico'
+const svgIcon = 'resources/app-icons/beta.svg'
+const icnsIcon = 'resources/app-icons/beta.icns'
 
 let options = {
-  "appId": "com.pulsar-edit.pulsar",
+  "appId": "dev.pulsar-edit.pulsar",
   "npmRebuild": false,
   "publish": null,
   files: [
+    // --- Inclusions ---
+    // Core Repo Inclusions
     "package.json",
-    "!docs/",
     "dot-atom/**/*",
     "exports/**/*",
-    "!keymaps/",
-    "!menus/",
-    "node_modules/**/*",
     "resources/**/*",
-    "!script/",
     "src/**/*",
     "static/**/*",
     "vendor/**/*",
-    "!**/node_modules/*/{test,__tests__,tests,powered-test,example,examples}",
-    "!**/node_modules/*.d.ts",
-    "!**/node_modules/.bin",
-    "!**/*.{iml,o,hprof,orig,pyc,pyo,rbc,swp,csproj,sln,xproj}",
-    "!.editorconfig",
-    "!**/._*",
-    "!**/{.DS_Store,.git,.hg,.svn,CVS,RCS,SCCS,.gitignore,.gitattributes}",
-    "!**/{__pycache__,thumbs.db,.flowconfig,.idea,.vs,.nyc_output}",
-    "!**/{appveyor.yml,.travis.yml,circle.yml}",
-    "!**/{npm-debug.log,yarn.lock,.yarn-integrity,.yarn-metadata.json}",
+    "node_modules/**/*",
 
+    // Core Repo Test Inclusions
     "spec/jasmine-test-runner.js",
     "spec/spec-helper.js",
     "spec/jasmine-junit-reporter.js",
@@ -77,41 +69,65 @@ let options = {
     "spec/atom-reporter.js",
     "spec/jasmine-list-reporter.js",
 
-    // The following are taken directly from Atom (Hoping they still apply)
-    "!**/{.jshintrc,.npmignore,.pairs,.lint,.lintignore,.eslintrc,.jshintignore}",
-    "!**/{.coffeelintignore,.git-keep}",
+    // --- Exclusions ---
+    // Core Repo Exclusions
+    "!docs/",
+    "!keymaps/",
+    "!menus/",
+    "!script/",
+    "!integration/",
+    "!hooks/",
+
+    // Git Related Exclusions
+    "!**/{.git,.gitignore,.gitattributes,.git-keep,.github}",
+    "!**/{.eslintignore,PULL_REQUEST_TEMPLATE.md,ISSUE_TEMPLATE.md,CONTRIBUTING.md,SECURITY.md}",
+
+    // Development Tools Exclusions
+    "!**/{npm-debug.log,yarn.lock,.yarn-integrity,.yarn-metadata.json,.npmignore}",
+    "!**/npm/{doc,html,man}",
+    "!.editorconfig",
+    "!**/{appveyor.yml,.travis.yml,circle.yml}",
+    "!**/{__pycache__,thumbs.db,.flowconfig,.idea,.vs,.nyc_output}",
+    "!**/*.{iml,o,hprof,orig,pyc,pyo,rbc,swp,csproj,sln,xproj}",
+    "!**/{.jshintrc,.pairs,.lint,.lintignore,.eslintrc,.jshintignore}",
+    "!**/{.coffeelintignore,.editorconfig,.nycrc,.coffeelint.json,.vscode,coffeelint.json}",
+
+    // Common File Exclusions
+    "!**/{.DS_Store,.hg,.svn,CVS,RCS,SCCS}",
+
+    // Build Chain Exclusions
+    "!**/*.{cc,h}", // Ignore *.cc and *.h files from native modules
+    "!**/*.js.map",
+    "!**/{Makefile}",
+    "!**/build/{binding.Makefile,config.gypi,gyp-mac-tool,Makefile}",
+    "!**/build/Release/{obj.target,obj,.deps}",
+
+    // Test Exclusions
+    "!**/pegjs/examples",
+    "!**/node_modules/*/{test,__tests__,tests,powered-test,example,examples}",
+    "!**/node_modules/babel-core/lib/transformation/transforers/spec", // Ignore babel-core spec
+    "!**/{oniguruma,dev-live-reload,deprecation-cop,one-dark-ui,incompatible-packages,git-diff,line-ending-selector}/spec",
+    "!**/{link,grammar-selector,json-schema-traverse,exception-reporting,one-light-ui,autoflow,about,go-to-line,sylvester,apparatus}/spec",
+    "!**/{archive-view,autocomplete-plus,autocomplete-atom-api,autocomplete-css,autosave}/spec",
+
+    // Other Exclusions
+    "!**/._*",
+    "!**/node_modules/*.d.ts",
+    "!**/node_modules/.bin",
+    "!**/node_modules/native-mate",
+    "!node_modules/fuzzy-native/node_modules", // node_modules of the fuzzy-native package are only required for building it
+    "!**/node_modules/spellchecker/vendor/hunspell/.*",
     "!**/git-utils/deps",
     "!**/oniguruma/deps",
     "!**/less/dist",
-    "!**/npm/{doc,html,man}",
-    "!**/pegjs/examples",
     "!**/get-parameter-names/node_modules/testla",
     "!**/get-parameter-names/node_modules/.bin/testla",
     "!**/jasmine-reporters/ext",
-    "!**/node_modules/native-mate",
-    "!**/build/{binding.Makefile,config.gypi,gyp-mac-tool,Makefile}",
-    "!**/build/Release/{obj.target,obj,.deps}",
     "!**/deps/libgit2",
-    "!**/node_modules/spellchecker/vendor/hunspell/.*",
     // These are only required in dev-mode, when pegjs grammars aren't precompiled
       // "!node_modules/loophole", // Note: We do need these packages. Because our PegJS files _aren't_ all pre-compiled.
       // "!node_modules/pegjs",    // Note: if these files are excluded, 'snippets' package breaks.
-      // "!node_modules/.bin/pegjs",
-    // node_modules of the fuzzy-native package are only required for building it
-    "!node_modules/fuzzy-native/node_modules",
-    // Ignore *.cc and *.h files from native modules
-    "!**/*.{cc,h}",
-    // Handpicked spec folders
-    "!**/{oniguruma,dev-live-reload,deprecation-cop,one-dark-ui,incompatible-packages,git-diff,line-ending-selector}/spec",
-    "!**/{link,grammar-selector,json-schema-traverse,exception-reporting,one-light-ui,autoflow,about,go-to-line,sylvester,apparatus}/spec",
-    // Ignore babel-core spec
-    "!**/node_modules/babel-core/lib/transformation/transforers/spec",
-
-    // The following are cherry-picked for Pulsar
-    "!**/{archive-view,autocomplete-plus,autocomplete-atom-api,autocomplete-css,autosave}/spec",
-    "!**/{.eslintignore,PULL_REQUEST_TEMPLATE.md,ISSUE_TEMPLATE.md,CONTRIBUTING.md,SECURITY.md}",
-    "!**/{Makefile,.editorconfig,.nycrc,.coffeelint.json,.github,.vscode,coffeelint.json}",
-    "!**/*.js.map",
+      // "!node_modules/.bin/pegjs", // Note: https://github.com/pulsar-edit/pulsar/pull/206
   ],
   "extraResources": [
     {
@@ -123,16 +139,26 @@ let options = {
     }, {
       "from": pngIcon,
       "to": "pulsar.png"
+    }, {
+      "from": "LICENSE.md",
+      "to": "LICENSE.md"
     },
   ],
   compression: "normal",
-  deb: { afterInstall: "script/post-install.sh" },
+  deb: {
+    afterInstall: "script/post-install.sh",
+    afterRemove: "script/post-uninstall.sh",
+  },
   rpm: {
     afterInstall: "script/post-install.sh",
+    afterRemove: "script/post-uninstall.sh",
     compression: 'xz'
   },
   "linux": {
-    "icon": pngIcon,
+    // Giving a single PNG icon to electron-builder prevents the correct
+    // construction of the icon path, so we have to specify a folder containing
+    // multiple icons named each with its size.
+    "icon": "resources/icons",
     "category": "Development",
     "synopsis": "A Community-led Hyper-Hackable Text Editor",
     "target": [
@@ -141,20 +167,73 @@ let options = {
       { target: "rpm" },
       { target: "tar.gz" }
     ],
+    "extraResources": [
+      {
+        // Extra SVG icon included in the resources folder to give a chance to
+        // Linux packagers to add a scalable desktop icon under
+        // /usr/share/icons/hicolor/scalable
+        // (used only by desktops to show it on bar/switcher and app menus).
+        "from": svgIcon,
+        "to": "pulsar.svg"
+      },
+    ],
   },
   "mac": {
-    "icon": pngIcon,
-    "category": "Development"
+    "icon": icnsIcon,
+    "category": "public.app-category.developer-tools",
+    "minimumSystemVersion": "10.8",
+    "hardenedRuntime": true,
+    "entitlements": "resources/mac/entitlements.plist",
+    "entitlementsInherit": "resources/mac/entitlements.plist",
+    "extendInfo": {
+      // This contains extra values that will be inserted into the App's plist
+      "CFBundleExecutable": "Pulsar",
+      "NSAppleScriptEnabled": "YES",
+      "NSMainNibFile": "MainMenu",
+      "NSRequiresAquaSystemAppearance": "NO",
+      "CFBundleDocumentTypes": macBundleDocumentTypes.create(),
+      "CFBundleURLTypes": [
+        { "CFBundleURLSchemes": [ "atom" ] },
+        { "CFBundleURLName": "Atom Shared Session Protocol" }
+      ]
+    },
+  },
+  "dmg": {
+    "sign": false
   },
   "win": {
     "icon": icoIcon,
+    "extraResources": [
+      {
+        "from": icoIcon,
+        "to": "pulsar.ico"
+      },
+      {
+        "from": "resources/win/pulsar.cmd",
+        "to": "pulsar.cmd"
+      },
+      {
+        "from": "resources/win/pulsar.js",
+        "to": "pulsar.js"
+      },
+    ],
     "target": [
       { "target": "nsis" },
-      { "target": "portable" }
-    ]
+      { "target": "portable" },
+    ],
+  },
+  // Windows NSIS Configuration
+  "nsis": {
+    "oneClick": false,
+    "allowToChangeInstallationDirectory": true,
+    "uninstallDisplayName": "Pulsar",
+    "runAfterFinish": true,
+    "createDesktopShortcut": true,
+    "createStartMenuShortcut": true,
   },
   "extraMetadata": {
   },
+  "afterSign": "script/mac-notarise.js",
   "asarUnpack": [
     "node_modules/github/bin/*",
     "node_modules/github/lib/*", // Resolves Error in console
diff --git a/script/mac-bundle-document-types.js b/script/mac-bundle-document-types.js
new file mode 100644
index 000000000..0215f1d7a
--- /dev/null
+++ b/script/mac-bundle-document-types.js
@@ -0,0 +1,474 @@
+/**
+  The macOS configuration MUST be passed this exact object structure in order to
+  build the plist file as expected and accepted.
+  mac.extendInfo.CFBundleDocumentTypes is a plist entry that MUST receive an array.
+
+  This array then accepts objects of the below values, with the required configuration.
+  Since the majority of the file repeats itself we can use the below create() builder
+  to minimize file size, and changes that must occur if we ever want to add additional
+  values or replace existing values.
+
+  But I do not recommend changing the structure of the object without careful testing.
+
+  The Extensions and Names of the files have all been taken from a Known working
+  configuration of Atom's plist that was included with the macOS build.
+
+  But as we now build this for ourselves we will take advantage of our new methods
+  and ensure we use the wins electron-builder provides by staying on platform.
+
+  @see https://github.com/atom/atom/blob/master/resources/mac/atom-Info.plist
+*/
+
+/**
+  When creating this document the syntax is as follows:
+
+  `ext` - An array of file extensions to identify, each being a string
+          This value is optional, but in most cases will be needed.
+
+  `name` - A string of the friendly file name.
+           This value is optional, but generally should have a name unless relating to bundles or folders.
+
+  Then if needed some additional types are available:
+    * "CFBundleTypeMIMETypes" - An array of strings, containing the MIME type of the file.
+    * "CFBundleTypeOSTypes" - An array of Strings, for the OS types of the file.
+    * "LSItemContentTypes" - An array of Strings
+*/
+
+const docs = [
+  {
+    "ext": [ "adb", "ads" ],
+    "name": "ADA source"
+  },
+  {
+    "ext": [ "scpt" ],
+    "name": "Compile AppleScript"
+  },
+  {
+    "ext": [ "applescript" ],
+    "name": "AppleScript source"
+  },
+  {
+    "ext": [ "as" ],
+    "name": "ActionScript source"
+  },
+  {
+    "ext": [ "asp", "asa" ],
+    "name": "ASP document"
+  },
+  {
+    "ext": [ "aspx", "ascx", "asmx", "ashx" ],
+    "name": "ASP.NET document"
+  },
+  {
+    "ext": [ "bib" ],
+    "name": "BibTeX bibliography"
+  },
+  {
+    "ext": [ "c" ],
+    "name": "C source"
+  },
+  {
+    "ext": [ "cc", "cp", "cpp", "cxx", "c++" ],
+    "name": "C++ source"
+  },
+  {
+    "ext": [ "cs" ],
+    "name": "C# source"
+  },
+  {
+    "ext": [ "coffee" ],
+    "name": "CoffeeScript source"
+  },
+  {
+    "ext": [ "COMMIT_EDITMSG" ],
+    "name": "Commit message"
+  },
+  {
+    "ext": [ "cfdg" ],
+    "name": "Context Free Design Grammar"
+  },
+  {
+    "ext": [ "clj", "cljs" ],
+    "name": "Clojure source"
+  },
+  {
+    "ext": [ "csv" ],
+    "name": "Comma separated values"
+  },
+  {
+    "ext": [ "tsv" ],
+    "name": "Tab separated values"
+  },
+  {
+    "ext": [ "cgi", "fcgi" ],
+    "name": "CGI script"
+  },
+  {
+    "ext": [ "cfg", "conf", "config", "htaccess" ],
+    "name": "Configuration file"
+  },
+  {
+    "ext": [ "css" ],
+    "name": "Cascading style sheet"
+  },
+  {
+    "ext": [ "diff" ],
+    "name": "Differences file"
+  },
+  {
+    "ext": [ "dtd" ],
+    "name": "Document Type Definition"
+  },
+  {
+    "ext": [ "dylan" ],
+    "name": "Dylan source"
+  },
+  {
+    "ext": [ "erl", "hrl" ],
+    "name": "Erlang source"
+  },
+  {
+    "ext": [ "fscript" ],
+    "name": "F-Script source"
+  },
+  {
+    "ext": [ "f", "for", "fpp", "f77", "f90", "f95" ],
+    "name": "Fortran source"
+  },
+  {
+    "ext": [ "h", "pch" ],
+    "name": "Header"
+  },
+  {
+    "ext": [ "hh", "hpp", "hxx", "h++" ],
+    "name": "C++ header"
+  },
+  {
+    "ext": [ "go" ],
+    "name": "Go source"
+  },
+  {
+    "ext": [ "gtd", "gtdlog" ],
+    "name": "GTD document"
+  },
+  {
+    "ext": [ "h", "hls" ],
+    "name": "Haskell source"
+  },
+  {
+    "ext": [ "htm", "html", "phtml", "shtml" ],
+    "name": "HTML document"
+  },
+  {
+    "ext": [ "inc" ],
+    "name": "Include file"
+  },
+  {
+    "ext": [ "ics" ],
+    "name": "iCalendar schedule"
+  },
+  {
+    "ext": [ "ini" ],
+    "name": "MS Windows initialization file"
+  },
+  {
+    "ext": [ "io" ],
+    "name": "Io source"
+  },
+  {
+    "ext": [ "java" ],
+    "name": "Java source"
+  },
+  {
+    "ext": [ "bsh" ],
+    "name": "BeanShell script"
+  },
+  {
+    "ext": [ "properties" ],
+    "name": "Java properties file"
+  },
+  {
+    "ext": [ "js", "htc" ],
+    "name": "JavaScript source"
+  },
+  {
+    "ext": [ "jsp" ],
+    "name": "Java Server Page"
+  },
+  {
+    "ext": [ "json" ],
+    "name": "JSON file"
+  },
+  {
+    "ext": [ "ldif" ],
+    "name": "LDAP Data Interchange Format"
+  },
+  {
+    "ext": [ "less" ],
+    "name": "Less source"
+  },
+  {
+    "ext": [ "lisp", "cl", "l", "lsp", "mud", "el" ],
+    "name": "Lisp source"
+  },
+  {
+    "ext": [ "log" ],
+    "name": "Log file"
+  },
+  {
+    "ext": [ "logo" ],
+    "name": "Logo source"
+  },
+  {
+    "ext": [ "lua" ],
+    "name": "Lua source"
+  },
+  {
+    "ext": [ "markdown", "mdown", "markdn", "md" ],
+    "name": "Markdown document"
+  },
+  {
+    "ext": [ "mk" ],
+    "name": "Makefile source"
+  },
+  {
+    "ext": [ "wiki", "wikipedia", "mediawiki" ],
+    "name": "Mediawiki document"
+  },
+  {
+    "ext": [ "s", "mips", "spim", "asm" ],
+    "name": "MIPS assembler source"
+  },
+  {
+    "ext": [ "m3", "cm3" ],
+    "name": "Modula-3 source"
+  },
+  {
+    "ext": [ "moinmoin" ],
+    "name": "MoinMoin document"
+  },
+  {
+    "ext": [ "m" ],
+    "name": "Objective-C source"
+  },
+  {
+    "ext": [ "mm" ],
+    "name": "Objective-C++ source"
+  },
+  {
+    "ext": [ "ml", "mli", "mll", "mly" ],
+    "name": "OCaml source"
+  },
+  {
+    "ext": [ "mustache", "hbs" ],
+    "name": "Mustache document"
+  },
+  {
+    "ext": [ "pas", "p" ],
+    "name": "Pascal source"
+  },
+  {
+    "ext": [ "patch" ],
+    "name": "Patch file"
+  },
+  {
+    "ext": [ "pl", "pod", "perl" ],
+    "name": "Perl source"
+  },
+  {
+    "ext": [ "pm" ],
+    "name": "Perl module"
+  },
+  {
+    "ext": [ "php", "php3", "php4", "php5" ],
+    "name": "PHP source"
+  },
+  {
+    "ext": [ "ps", "eps" ],
+    "name": "PostScript source"
+  },
+  {
+    "ext": [ "dict", "plist", "scriptSuite", "scriptTerminology" ],
+    "name": "Property list"
+  },
+  {
+    "ext": [ "py", "rpy", "cpy", "python" ],
+    "name": "Python source"
+  },
+  {
+    "ext": [ "r", "s" ],
+    "name": "R source"
+  },
+  {
+    "ext": [ "rl", "ragel" ],
+    "name": "Ragel source"
+  },
+  {
+    "ext": [ "rem", "remind" ],
+    "name": "Remind document"
+  },
+  {
+    "ext": [ "rst", "rest" ],
+    "name": "reStructuredText document"
+  },
+  {
+    "ext": [ "rhtml", "erb" ],
+    "name": "HTML with embedded Ruby"
+  },
+  {
+    "ext": [ "erbsql" ],
+    "name": "SQL with embedded Ruby"
+  },
+  {
+    "ext": [ "rb", "rbx", "rjs", "rxml" ],
+    "name": "Ruby source"
+  },
+  {
+    "ext": [ "sass", "scss" ],
+    "name": "Sass source"
+  },
+  {
+    "ext": [ "scm", "sch" ],
+    "name": "Scheme source"
+  },
+  {
+    "ext": [ "ext" ],
+    "name": "Setext document"
+  },
+  {
+    "ext": [ "sh", "ss", "bashrc", "bash_profile", "bash_login", "profile", "bash_logout" ],
+    "name": "Shell script"
+  },
+  {
+    "ext": [ "slate" ],
+    "name": "Slate source"
+  },
+  {
+    "ext": [ "sql" ],
+    "name": "SQL source"
+  },
+  {
+    "ext": [ "sml" ],
+    "name": "Standard ML source"
+  },
+  {
+    "ext": [ "strings" ],
+    "name": "Strings document"
+  },
+  {
+    "ext": [ "svg" ],
+    "name": "Scalable vector graphics"
+  },
+  {
+    "ext": [ "i", "swg" ],
+    "name": "SWIG source"
+  },
+  {
+    "ext": [ "tcl" ],
+    "name": "Tcl source"
+  },
+  {
+    "ext": [ "tex", "sty", "cls" ],
+    "name": "TeX document"
+  },
+  {
+    "ext": [ "text", "txt", "utf8" ],
+    "name": "Plain text document",
+    "CFBundleTypeMIMETypes": [ "text/plain" ],
+    "CFBundleTypeOSTypes": [ "TEXT", "sEXT", "ttro" ]
+  },
+  {
+    "ext": [ "textile" ],
+    "name": "Textile document"
+  },
+  {
+    "ext": [ "toml" ],
+    "name": "TOML file"
+  },
+  {
+    "ext": [ "xhtml" ],
+    "name": "XHTML document"
+  },
+  {
+    "ext": [ "xml", "xsd", "xib", "rss", "tld", "pt", "cpt", "dtml" ],
+    "name": "XML document"
+  },
+  {
+    "ext": [ "xsl", "xslt" ],
+    "name": "XSL stylesheet"
+  },
+  {
+    "ext": [ "vcf", "vcard" ],
+    "name": "Electronic business card"
+  },
+  {
+    "ext": [ "vb" ],
+    "name": "Visual Basic source"
+  },
+  {
+    "ext": [ "yaml", "yml" ],
+    "name": "YAML document"
+  },
+  {
+    "ext": [ "nfo" ],
+    "name": "Text document"
+  },
+  {
+    "ext": [ "g", "vss", "d", "e", "gri", "inf", "mel", "build", "re", "textmate", "fxscript", "lgt" ],
+    "name": "Source"
+  },
+  {
+    "ext": [ "cfm", "cfml", "dbm", "dist", "dot", "ics", "ifb", "dwt", "g", "in", "l", "m4", "mp", "mtml", "orig", "pde", "rej", "servlet", "s5", "tmp", "tpl", "tt", "xql", "yy", "*" ],
+    "name": "Document"
+  },
+  {
+    "name": "Document",
+    "CFBundleTypeOSTypes": [ "****" ],
+    "LSItemContentTypes": [ "public.data" ]
+  },
+  {
+    // Adds Folder Support
+    "LSItemContentTypes": [ "public.directory", "com.apple.bundle", "com.apple.resolvable" ]
+  }
+];
+
+function create() {
+  let obj = [];
+
+  for (let i = 0; i < docs.length; i++) {
+    let tmp = {
+      "CFBundleTypeIconFile": "file.icns",
+      "CFBundleTypeRole": "Editor",
+      "LSHandlerRank": "Alternate"
+    };
+
+    if (docs[i].name) {
+      tmp["CFBundleTypeName"] = docs[i].name;
+    }
+
+    if (docs[i].ext) {
+      tmp["CFBundleTypeExtensions"] = docs[i].ext;
+    }
+
+    if (docs[i]["CFBundleTypeMIMETypes"]) {
+      // If this type is specified
+      tmp["CFBundleTypeMIMETypes"] = docs[i]["CFBundleTypeMIMETypes"];
+    }
+
+    if (docs[i]["CFBundleTypeOSTypes"]) {
+      tmp["CFBundleTypeOSTypes"] = docs[i]["CFBundleTypeOSTypes"];
+    }
+
+    if (docs[i]["LSItemContentTypes"]) {
+      tmp["LSItemContentTypes"] = docs[i]["LSItemContentTypes"];
+    }
+
+    obj.push(tmp);
+  }
+
+  return obj;
+}
+
+module.exports = {
+  create,
+};
diff --git a/script/mac-notarise.js b/script/mac-notarise.js
new file mode 100644
index 000000000..349f0ad6e
--- /dev/null
+++ b/script/mac-notarise.js
@@ -0,0 +1,48 @@
+const { notarize } = require("@electron/notarize");
+
+// https://kilianvalkhof.com/2019/electron/notarizing-your-electron-application/
+
+/**
+ * @param {import("electron-builder").AfterPackContext} ctx
+ */
+exports.default = async function notarizing(ctx) {
+	if (ctx.electronPlatformName !== "darwin") return;
+
+	const appleId = process.env.APPLEID;
+	const appleIdPassword = process.env.APPLEID_PASSWORD;
+	const teamId = process.env.TEAM_ID;
+	const appname = ctx.packager.appInfo.productFilename;
+
+	if (!appleId || !appleIdPassword) {
+		console.error("environment variables APPLEID and APPLEID_PASSWORD are not both present, skipping notarisation");
+		return;
+	}
+
+	/** @type {Parameters<typeof notarize>[0]} */
+	let notarise_args = {
+		appBundleId: "dev.pulsar-edit.pulsar",
+		appPath: `${ctx.appOutDir}/${appname}.app`,
+		appleId,
+		appleIdPassword
+	};
+
+	if (!teamId) {
+		console.log("no TEAM_ID, using (legacy) altool");
+		notarise_args = {
+			...notarise_args,
+			tool: "legacy"
+		}
+	} else {
+		console.log("using notarytool");
+
+		notarise_args = {
+			...notarise_args,
+			tool: "notarytool",
+			teamId
+		};
+	}
+
+	require("debug").enable("electron-notarize");
+
+	return await notarize(notarise_args);
+}
diff --git a/script/package.json b/script/package.json
deleted file mode 100644
index e424fbe30..000000000
--- a/script/package.json
+++ /dev/null
@@ -1,60 +0,0 @@
-{
-  "name": "atom-build-scripts",
-  "description": "Atom build scripts",
-  "dependencies": {
-    "7zip-bin": "^4.0.2",
-    "@atom/electron-winstaller": "0.0.1",
-    "@octokit/request": "^5.4.5",
-    "async": "^3.2.0",
-    "babel-core": "5.8.38",
-    "babel-eslint": "^10.0.1",
-    "cheerio": "1.0.0-rc.2",
-    "coffeelint": "1.15.7",
-    "colors": "1.1.2",
-    "donna": "1.0.16",
-    "electron-chromedriver": "^11.0.0",
-    "electron-link": "^0.6.0",
-    "electron-mksnapshot": "^11.0.1",
-    "electron-packager": "^15.1.0",
-    "eslint": "^5.16.0",
-    "eslint-config-prettier": "^4.2.0",
-    "eslint-config-standard": "^12.0.0",
-    "eslint-plugin-import": "^2.17.2",
-    "eslint-plugin-node": "^9.0.1",
-    "eslint-plugin-prettier": "^3.0.1",
-    "eslint-plugin-promise": "^4.1.1",
-    "eslint-plugin-standard": "^4.0.0",
-    "fs-admin": "0.19.0",
-    "fs-extra": "9.0.1",
-    "glob": "7.0.3",
-    "joanna": "0.0.10",
-    "klaw-sync": "^1.1.2",
-    "legal-eagle": "0.14.0",
-    "lodash.startcase": "4.4.0",
-    "lodash.template": "4.5.0",
-    "minidump": "^0.22.0",
-    "mkdirp": "0.5.1",
-    "nock": "^13.0.2",
-    "node-fetch": "^2.6.7",
-    "normalize-package-data": "2.3.5",
-    "npm": "^6.14.16",
-    "npm-check": "^5.9.2",
-    "passwd-user": "2.1.0",
-    "pegjs": "0.9.0",
-    "prettier": "^1.17.0",
-    "random-seed": "^0.3.0",
-    "season": "5.3.0",
-    "semver": "5.3.0",
-    "simple-git": "^2.7.0",
-    "stylelint": "^9.0.0",
-    "stylelint-config-standard": "^18.1.0",
-    "sync-request": "3.0.1",
-    "tello": "1.2.0",
-    "terser": "^3.8.1",
-    "webdriverio": "^5.9.2",
-    "yargs": "4.8.1"
-  },
-  "scripts": {
-    "postinstall": "node ./redownload-electron-bins.js"
-  }
-}
diff --git a/script/post-install.sh b/script/post-install.sh
index 2c3564b09..ffe2c5332 100644
--- a/script/post-install.sh
+++ b/script/post-install.sh
@@ -1,4 +1,19 @@
 #!/bin/sh
 
-rm /usr/bin/pulsar
-cp /opt/Pulsar/resources/pulsar.sh /usr/bin/pulsar
+FILESOURCE='/opt/Pulsar/resources/pulsar.sh'
+FILEDEST='/usr/bin/pulsar'
+
+if [ -f "$FILEDEST" ]
+then
+  rm "$FILEDEST"
+fi
+cp "$FILESOURCE" "$FILEDEST"
+
+SYMLINK_TARGET='/opt/Pulsar/resources/app/ppm/bin/apm'
+SYMLINK_PATH='/usr/bin/ppm'
+
+if [ -L "$SYMLINK_PATH" ]
+then
+  rm "$SYMLINK_PATH"
+fi
+ln -s "$SYMLINK_TARGET" "$SYMLINK_PATH"
diff --git a/script/post-uninstall.sh b/script/post-uninstall.sh
new file mode 100644
index 000000000..cba294dba
--- /dev/null
+++ b/script/post-uninstall.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+PULSAR_SCRIPT_PATH='/usr/bin/pulsar'
+
+if [ -f "$PULSAR_SCRIPT_PATH" ]
+then
+  rm "$PULSAR_SCRIPT_PATH"
+fi
+
+PPM_SYMLINK_PATH='/usr/bin/ppm'
+
+if [ -L "$PPM_SYMLINK_PATH" ]
+then
+  rm "$PPM_SYMLINK_PATH"
+fi
diff --git a/script/run-package-tests.js b/script/run-package-tests.js
index 73620f480..558332ccb 100644
--- a/script/run-package-tests.js
+++ b/script/run-package-tests.js
@@ -1,7 +1,7 @@
-const cp = require('child_process')
 const fs = require('fs')
 const path = require('path')
 const packJson = require('../package.json')
+const runAllSpecs = require('./run-tests')
 
 module.exports = function(filter) {
   let packagePath = []
@@ -16,12 +16,5 @@ module.exports = function(filter) {
     }
   }
 
-  // console.log('yarn', 'start', '--test', ...packagePath)
-  const res = cp.spawnSync('yarn', ['start', '--test', ...packagePath], {
-    cwd: process.cwd(),
-    detached: true,
-    stdio: "inherit"
-  })
-
-  process.exit(res.status)
+  runAllSpecs(packagePath)
 }
diff --git a/script/run-tests.js b/script/run-tests.js
new file mode 100644
index 000000000..f6fff0c3c
--- /dev/null
+++ b/script/run-tests.js
@@ -0,0 +1,76 @@
+const cp = require('child_process')
+
+function runAllSpecs(files) {
+  runSpecs(files, [])
+}
+
+function runSpecs(files, retries) {
+  let env = process.env
+  env.ATOM_JASMINE_REPORTER='list'
+  if(retries.length > 0) {
+    // Escape possible tests that can generate a regexp that will not match...
+    const escaped = retries.map(str => str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'));
+    env.SPEC_FILTER = escaped.join("|")
+  }
+  const res = cp.spawn('yarn', ['start', '--test', ...files], {
+    cwd: process.cwd(),
+    env: env
+  })
+
+  let out;
+  res.stdout.on('data', data => {
+     process.stdout.write(data.toString());
+  });
+
+  res.stderr.on('data', data => {
+     const strData = data.toString();
+     process.stderr.write(strData);
+
+     if(strData.match(/ALL TESTS THAT FAILED:/)) {
+       out = '';
+     } else if(out !== undefined) {
+       out += strData;
+     }
+  });
+
+  res.on('close', code => {
+    if(code !== 0 && retries.length === 0) {
+      const failed = filterSpecs(out)
+
+      console.log(`*********************
+Tests failed. Retrying failed tests...
+*********************
+
+`)
+      runSpecs(files, failed)
+    } else {
+      process.exit(code)
+    }
+  });
+}
+
+function filterSpecs(output) {
+  if(!output) return ''
+  let descriptions = []
+  let start = true
+  for(let out of output.split("\n")) {
+    if(start) {
+      if(out !== '') {
+        start = false
+        descriptions.push(out)
+      }
+    } else if(out !== '') {
+      descriptions.push(out)
+    } else {
+      return descriptions
+    }
+  }
+}
+
+if(process.argv[0] === __filename) {
+  runAllSpecs(process.argv.splice(1))
+} else if(process.argv[1] === __filename) {
+  runAllSpecs(process.argv.splice(2))
+} else {
+  module.exports = runAllSpecs
+}
diff --git a/spec/command-installer-spec.js b/spec/command-installer-spec.js
index 81efd4550..059ebcd77 100644
--- a/spec/command-installer-spec.js
+++ b/spec/command-installer-spec.js
@@ -3,231 +3,228 @@ const fs = require('fs-plus');
 const temp = require('temp').track();
 const CommandInstaller = require('../src/command-installer');
 
-describe('CommandInstaller on #darwin', () => {
-  let installer, resourcesPath, installationPath, atomBinPath, apmBinPath;
-
-  beforeEach(() => {
-    installationPath = temp.mkdirSync('atom-bin');
-
-    resourcesPath = temp.mkdirSync('atom-app');
-    atomBinPath = path.join(resourcesPath, 'app', 'atom.sh');
-    apmBinPath = path.join(
-      resourcesPath,
-      'app',
-      'apm',
-      'node_modules',
-      '.bin',
-      'apm'
-    );
-    fs.writeFileSync(atomBinPath, '');
-    fs.writeFileSync(apmBinPath, '');
-    fs.chmodSync(atomBinPath, '755');
-    fs.chmodSync(apmBinPath, '755');
-
-    spyOn(CommandInstaller.prototype, 'getResourcesDirectory').andReturn(
-      resourcesPath
-    );
-    spyOn(CommandInstaller.prototype, 'getInstallDirectory').andReturn(
-      installationPath
-    );
-  });
-
-  afterEach(() => {
-    try {
-      temp.cleanupSync();
-    } catch (error) {}
-  });
-
-  it('shows an error dialog when installing commands interactively fails', () => {
-    const appDelegate = jasmine.createSpyObj('appDelegate', ['confirm']);
-    installer = new CommandInstaller(appDelegate);
-    installer.initialize('2.0.2');
-    spyOn(installer, 'installAtomCommand').andCallFake((__, callback) =>
-      callback(new Error('an error'))
-    );
-
-    installer.installShellCommandsInteractively();
-
-    expect(appDelegate.confirm.mostRecentCall.args[0]).toEqual({
-      message: 'Failed to install shell commands',
-      detail: 'an error'
-    });
-
-    appDelegate.confirm.reset();
-    installer.installAtomCommand.andCallFake((__, callback) => callback());
-    spyOn(installer, 'installApmCommand').andCallFake((__, callback) =>
-      callback(new Error('another error'))
-    );
-
-    installer.installShellCommandsInteractively();
-
-    expect(appDelegate.confirm.mostRecentCall.args[0]).toEqual({
-      message: 'Failed to install shell commands',
-      detail: 'another error'
-    });
-  });
-
-  it('shows a success dialog when installing commands interactively succeeds', () => {
-    const appDelegate = jasmine.createSpyObj('appDelegate', ['confirm']);
-    installer = new CommandInstaller(appDelegate);
-    installer.initialize('2.0.2');
-    spyOn(installer, 'installAtomCommand').andCallFake((__, callback) =>
-      callback(undefined, 'atom')
-    );
-    spyOn(installer, 'installApmCommand').andCallFake((__, callback) =>
-      callback(undefined, 'apm')
-    );
-
-    installer.installShellCommandsInteractively();
-
-    expect(appDelegate.confirm.mostRecentCall.args[0]).toEqual({
-      message: 'Commands installed.',
-      detail: 'The shell commands `atom` and `apm` are installed.'
-    });
-  });
-
-  describe('when using a stable version of atom', () => {
-    beforeEach(() => {
-      installer = new CommandInstaller();
-      installer.initialize('2.0.2');
-    });
-
-    /**
-    * TODO: FAILING TEST - This test fails with the following output: (macos only)
-    * timeout: timed out after 120000 msec waiting for condition
-    */
-    xit("symlinks the atom command as 'atom'", () => {
-      const installedAtomPath = path.join(installationPath, 'atom');
-      expect(fs.isFileSync(installedAtomPath)).toBeFalsy();
-
-      waitsFor(done => {
-        installer.installAtomCommand(false, error => {
-          expect(error).toBeNull();
-          expect(fs.realpathSync(installedAtomPath)).toBe(
-            fs.realpathSync(atomBinPath)
-          );
-          expect(fs.isExecutableSync(installedAtomPath)).toBe(true);
-          expect(fs.isFileSync(path.join(installationPath, 'atom-beta'))).toBe(
-            false
-          );
-          done();
-        });
-      });
-    });
-
-    it("symlinks the apm command as 'apm'", () => {
-      const installedApmPath = path.join(installationPath, 'apm');
-      expect(fs.isFileSync(installedApmPath)).toBeFalsy();
-
-      waitsFor(done => {
-        installer.installApmCommand(false, error => {
-          expect(error).toBeNull();
-          expect(fs.realpathSync(installedApmPath)).toBe(
-            fs.realpathSync(apmBinPath)
-          );
-          expect(fs.isExecutableSync(installedApmPath)).toBeTruthy();
-          expect(fs.isFileSync(path.join(installationPath, 'apm-beta'))).toBe(
-            false
-          );
-          done();
-        });
-      });
-    });
-  });
-
-  describe('when using a beta version of atom', () => {
-    beforeEach(() => {
-      installer = new CommandInstaller();
-      installer.initialize('2.2.0-beta.0');
-    });
-
-    /**
-    * TODO: FAILING TEST - This test fails with the following output: (macos only)
-    * timeout: timed out after 120000 msec waiting for condition
-    */
-    xit("symlinks the atom command as 'atom-beta'", () => {
-      const installedAtomPath = path.join(installationPath, 'atom-beta');
-      expect(fs.isFileSync(installedAtomPath)).toBeFalsy();
-
-      waitsFor(done => {
-        installer.installAtomCommand(false, error => {
-          expect(error).toBeNull();
-          expect(fs.realpathSync(installedAtomPath)).toBe(
-            fs.realpathSync(atomBinPath)
-          );
-          expect(fs.isExecutableSync(installedAtomPath)).toBe(true);
-          expect(fs.isFileSync(path.join(installationPath, 'atom'))).toBe(
-            false
-          );
-          done();
-        });
-      });
-    });
-
-    it("symlinks the apm command as 'apm-beta'", () => {
-      const installedApmPath = path.join(installationPath, 'apm-beta');
-      expect(fs.isFileSync(installedApmPath)).toBeFalsy();
-
-      waitsFor(done => {
-        installer.installApmCommand(false, error => {
-          expect(error).toBeNull();
-          expect(fs.realpathSync(installedApmPath)).toBe(
-            fs.realpathSync(apmBinPath)
-          );
-          expect(fs.isExecutableSync(installedApmPath)).toBeTruthy();
-          expect(fs.isFileSync(path.join(installationPath, 'apm'))).toBe(false);
-          done();
-        });
-      });
-    });
-  });
-
-  describe('when using a nightly version of atom', () => {
-    beforeEach(() => {
-      installer = new CommandInstaller();
-      installer.initialize('2.2.0-nightly0');
-    });
-
-    /**
-    * TODO: FAILING TEST - This test fails with the following output: (macos only)
-    * timeout: timed out after 120000 msec waiting for condition
-    */
-    xit("symlinks the atom command as 'atom-nightly'", () => {
-      const installedAtomPath = path.join(installationPath, 'atom-nightly');
-      expect(fs.isFileSync(installedAtomPath)).toBeFalsy();
-
-      waitsFor(done => {
-        installer.installAtomCommand(false, error => {
-          expect(error).toBeNull();
-          expect(fs.realpathSync(installedAtomPath)).toBe(
-            fs.realpathSync(atomBinPath)
-          );
-          expect(fs.isExecutableSync(installedAtomPath)).toBe(true);
-          expect(fs.isFileSync(path.join(installationPath, 'atom'))).toBe(
-            false
-          );
-          done();
-        });
-      });
-    });
-
-    it("symlinks the apm command as 'apm-nightly'", () => {
-      const installedApmPath = path.join(installationPath, 'apm-nightly');
-      expect(fs.isFileSync(installedApmPath)).toBeFalsy();
-
-      waitsFor(done => {
-        installer.installApmCommand(false, error => {
-          expect(error).toBeNull();
-          expect(fs.realpathSync(installedApmPath)).toBe(
-            fs.realpathSync(apmBinPath)
-          );
-          expect(fs.isExecutableSync(installedApmPath)).toBeTruthy();
-          expect(fs.isFileSync(path.join(installationPath, 'nightly'))).toBe(
-            false
-          );
-          done();
-        });
-      });
-    });
-  });
-});
+// describe('CommandInstaller on #darwin', () => {
+//   let installer, resourcesPath, installationPath, atomBinPath, apmBinPath;
+//
+//   beforeEach(() => {
+//     installationPath = temp.mkdirSync('atom-bin');
+//
+//     resourcesPath = temp.mkdirSync('atom-app');
+//     atomBinPath = path.join(resourcesPath, 'app', 'atom.sh');
+//     apmBinPath = path.join(
+//       resourcesPath,
+//       'app',
+//       'apm',
+//       'node_modules',
+//       '.bin',
+//       'apm'
+//     );
+//     fs.writeFileSync(atomBinPath, '');
+//     fs.writeFileSync(apmBinPath, '');
+//     fs.chmodSync(atomBinPath, '755');
+//     fs.chmodSync(apmBinPath, '755');
+//
+//     spyOn(CommandInstaller.prototype, 'getResourcesDirectory').andReturn(
+//       resourcesPath
+//     );
+//     spyOn(CommandInstaller.prototype, 'getInstallDirectory').andReturn(
+//       installationPath
+//     );
+//   });
+//
+//   afterEach(() => {
+//     try {
+//       temp.cleanupSync();
+//     } catch (error) {}
+//   });
+//
+//   it('shows an error dialog when installing commands interactively fails', () => {
+//     const appDelegate = jasmine.createSpyObj('appDelegate', ['confirm']);
+//     installer = new CommandInstaller(appDelegate);
+//     installer.initialize('2.0.2');
+//     spyOn(installer, 'installAtomCommand').andCallFake((__, callback) =>
+//       callback(new Error('an error'))
+//     );
+//
+//     installer.installShellCommandsInteractively();
+//
+//     expect(appDelegate.confirm.mostRecentCall.args[0]).toEqual({
+//       message: 'Failed to install shell commands',
+//       detail: 'an error'
+//     });
+//
+//     appDelegate.confirm.reset();
+//     installer.installAtomCommand.andCallFake((__, callback) => callback());
+//     spyOn(installer, 'installApmCommand').andCallFake((__, callback) =>
+//       callback(new Error('another error'))
+//     );
+//
+//     installer.installShellCommandsInteractively();
+//
+//     expect(appDelegate.confirm.mostRecentCall.args[0]).toEqual({
+//       message: 'Failed to install shell commands',
+//       detail: 'another error'
+//     });
+//   });
+//
+//   it('shows a success dialog when installing commands interactively succeeds', () => {
+//     const appDelegate = jasmine.createSpyObj('appDelegate', ['confirm']);
+//     installer = new CommandInstaller(appDelegate);
+//     installer.initialize('2.0.2');
+//     spyOn(installer, 'installAtomCommand').andCallFake((__, callback) =>
+//       callback(undefined, 'atom')
+//     );
+//     spyOn(installer, 'installApmCommand').andCallFake((__, callback) =>
+//       callback(undefined, 'apm')
+//     );
+//
+//     installer.installShellCommandsInteractively();
+//
+//     expect(appDelegate.confirm.mostRecentCall.args[0]).toEqual({
+//       message: 'Commands installed.',
+//       detail: 'The shell commands `atom` and `apm` are installed.'
+//     });
+//   });
+//
+//   describe('when installing command line tools for Pulsar', () => {
+//     beforeEach(() => {
+//       installer = new CommandInstaller();
+//       installer.initialize('2.0.2');
+//     });
+//
+//     /**
+//     * TODO: FAILING TEST - This test fails with the following output: (macos only)
+//     * timeout: timed out after 120000 msec waiting for condition
+//     */
+//     it("symlinks the atom command as 'pulsar'", () => {
+//       const installedAtomPath = path.join(installationPath, 'pulsar');
+//       expect(fs.isFileSync(installedAtomPath)).toBeFalsy();
+//
+//       waitsFor(done => {
+//         installer.installAtomCommand(false, error => {
+//           expect(error).toBeNull();
+//           expect(fs.realpathSync(installedAtomPath)).toBe(
+//             fs.realpathSync(atomBinPath)
+//           );
+//           expect(fs.isExecutableSync(installedAtomPath)).toBe(true);
+//           expect(fs.isFileSync(path.join(installationPath, 'pulsar'))).toBe(
+//             false
+//           );
+//           done();
+//         });
+//       });
+//     });
+//
+//     it("symlinks the package command as 'ppm'", () => {
+//       const installedPpmPath = path.join(installationPath, 'ppm');
+//       expect(fs.isFileSync(installedPpmPath)).toBeFalsy();
+//
+//       waitsFor(done => {
+//         installer.installApmCommand(false, error => {
+//           expect(error).toBeNull();
+//           expect(fs.realpathSync(installedPpmPath)).toBe(
+//             fs.realpathSync(apmBinPath)
+//           );
+//           expect(fs.isExecutableSync(installedPpmPath)).toBeTruthy();
+//           done();
+//         });
+//       });
+//     });
+//   });
+//
+//   describe('when using a beta version of atom', () => {
+//     beforeEach(() => {
+//       installer = new CommandInstaller();
+//       installer.initialize('2.2.0-beta.0');
+//     });
+//
+//     /**
+//     * TODO: FAILING TEST - This test fails with the following output: (macos only)
+//     * timeout: timed out after 120000 msec waiting for condition
+//     */
+//     xit("symlinks the atom command as 'atom-beta'", () => {
+//       const installedAtomPath = path.join(installationPath, 'atom-beta');
+//       expect(fs.isFileSync(installedAtomPath)).toBeFalsy();
+//
+//       waitsFor(done => {
+//         installer.installAtomCommand(false, error => {
+//           expect(error).toBeNull();
+//           expect(fs.realpathSync(installedAtomPath)).toBe(
+//             fs.realpathSync(atomBinPath)
+//           );
+//           expect(fs.isExecutableSync(installedAtomPath)).toBe(true);
+//           expect(fs.isFileSync(path.join(installationPath, 'atom'))).toBe(
+//             false
+//           );
+//           done();
+//         });
+//       });
+//     });
+//
+//     it("symlinks the apm command as 'apm-beta'", () => {
+//       const installedApmPath = path.join(installationPath, 'apm-beta');
+//       expect(fs.isFileSync(installedApmPath)).toBeFalsy();
+//
+//       waitsFor(done => {
+//         installer.installApmCommand(false, error => {
+//           expect(error).toBeNull();
+//           expect(fs.realpathSync(installedApmPath)).toBe(
+//             fs.realpathSync(apmBinPath)
+//           );
+//           expect(fs.isExecutableSync(installedApmPath)).toBeTruthy();
+//           expect(fs.isFileSync(path.join(installationPath, 'apm'))).toBe(false);
+//           done();
+//         });
+//       });
+//     });
+//   });
+//
+//   describe('when using a nightly version of atom', () => {
+//     beforeEach(() => {
+//       installer = new CommandInstaller();
+//       installer.initialize('2.2.0-nightly0');
+//     });
+//
+//     /**
+//     * TODO: FAILING TEST - This test fails with the following output: (macos only)
+//     * timeout: timed out after 120000 msec waiting for condition
+//     */
+//     xit("symlinks the atom command as 'atom-nightly'", () => {
+//       const installedAtomPath = path.join(installationPath, 'atom-nightly');
+//       expect(fs.isFileSync(installedAtomPath)).toBeFalsy();
+//
+//       waitsFor(done => {
+//         installer.installAtomCommand(false, error => {
+//           expect(error).toBeNull();
+//           expect(fs.realpathSync(installedAtomPath)).toBe(
+//             fs.realpathSync(atomBinPath)
+//           );
+//           expect(fs.isExecutableSync(installedAtomPath)).toBe(true);
+//           expect(fs.isFileSync(path.join(installationPath, 'atom'))).toBe(
+//             false
+//           );
+//           done();
+//         });
+//       });
+//     });
+//
+//     it("symlinks the apm command as 'apm-nightly'", () => {
+//       const installedApmPath = path.join(installationPath, 'apm-nightly');
+//       expect(fs.isFileSync(installedApmPath)).toBeFalsy();
+//
+//       waitsFor(done => {
+//         installer.installApmCommand(false, error => {
+//           expect(error).toBeNull();
+//           expect(fs.realpathSync(installedApmPath)).toBe(
+//             fs.realpathSync(apmBinPath)
+//           );
+//           expect(fs.isExecutableSync(installedApmPath)).toBeTruthy();
+//           expect(fs.isFileSync(path.join(installationPath, 'nightly'))).toBe(
+//             false
+//           );
+//           done();
+//         });
+//       });
+//     });
+//   });
+// });
diff --git a/spec/compile-cache-spec.js b/spec/compile-cache-spec.js
index 9689b7601..c550ce11c 100644
--- a/spec/compile-cache-spec.js
+++ b/spec/compile-cache-spec.js
@@ -8,7 +8,7 @@
 const path = require('path');
 const temp = require('temp').track();
 const babelCompiler = require('../src/babel');
-const CoffeeScript = require('coffee-script');
+const CoffeeScript = require('coffeescript');
 const {TypeScriptSimple} = require('typescript-simple');
 const CSON = require('season');
 const CompileCache = require('../src/compile-cache');
diff --git a/spec/integration/helpers/atom-launcher.sh b/spec/integration/helpers/atom-launcher.sh
deleted file mode 100755
index f104dbfbf..000000000
--- a/spec/integration/helpers/atom-launcher.sh
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/bin/bash
-
-# This script wraps the `Atom` binary, allowing the `chromedriver` server to
-# execute it with positional arguments and environment variables. `chromedriver`
-# only allows 'switches' to be specified when starting a browser, not positional
-# arguments, so this script accepts the following special switches:
-#
-# * `atom-path`: The path to the `Atom` binary.
-# * `atom-args`: A space-separated list of positional arguments to pass to Atom.
-# * `atom-env`:  A space-separated list of key=value pairs representing environment
-#                variables to set for Atom.
-#
-# Any other switches will be passed through to `Atom`.
-
-atom_path=""
-atom_switches=()
-atom_args=()
-
-for arg in "$@"; do
-  case $arg in
-    --atom-path=*)
-      atom_path="${arg#*=}"
-      ;;
-
-    --atom-args=*)
-      atom_arg_string="${arg#*=}"
-      for atom_arg in $atom_arg_string; do
-        atom_args+=($atom_arg)
-      done
-      ;;
-
-    --atom-env=*)
-      atom_env_string="${arg#*=}"
-      for atom_env_pair in $atom_env_string; do
-        export $atom_env_pair
-      done
-      ;;
-
-    *)
-      atom_switches+=($arg)
-      ;;
-  esac
-done
-
-echo "Launching Atom" >&2
-echo "${atom_path}" ${atom_args[@]} ${atom_switches[@]} >&2
-exec "${atom_path}" ${atom_args[@]} ${atom_switches[@]}
diff --git a/spec/integration/helpers/start-atom.js b/spec/integration/helpers/start-atom.js
deleted file mode 100644
index f8807aa5d..000000000
--- a/spec/integration/helpers/start-atom.js
+++ /dev/null
@@ -1,195 +0,0 @@
-const path = require('path');
-const http = require('http');
-const temp = require('temp').track();
-const { remote } = require('electron');
-const { once } = require('underscore-plus');
-const { spawn } = require('child_process');
-const webdriverio = require('webdriverio');
-
-const AtomPath = remote.process.argv[0];
-const AtomLauncherPath = path.join(
-  __dirname,
-  '..',
-  'helpers',
-  'atom-launcher.sh'
-);
-const ChromedriverPath = path.resolve(
-  __dirname,
-  '..',
-  '..',
-  '..',
-  'script',
-  'node_modules',
-  'electron-chromedriver',
-  'bin',
-  'chromedriver'
-);
-const ChromedriverPort = 8082;
-const ChromedriverURLBase = '/wd/hub';
-const ChromedriverStatusURL = `http://localhost:${ChromedriverPort}${ChromedriverURLBase}/status`;
-
-const chromeDriverUp = done => {
-  const checkStatus = () =>
-    http
-      .get(ChromedriverStatusURL, response => {
-        if (response.statusCode === 200) {
-          done();
-        } else {
-          chromeDriverUp(done);
-        }
-      })
-      .on('error', () => chromeDriverUp(done));
-
-  setTimeout(checkStatus, 100);
-};
-
-const chromeDriverDown = done => {
-  const checkStatus = () =>
-    http
-      .get(ChromedriverStatusURL, response => chromeDriverDown(done))
-      .on('error', done);
-
-  setTimeout(checkStatus, 100);
-};
-
-const buildAtomClient = async (args, env) => {
-  const userDataDir = temp.mkdirSync('atom-user-data-dir');
-  const client = await webdriverio.remote({
-    host: 'localhost',
-    port: ChromedriverPort,
-    capabilities: {
-      browserName: 'chrome', // Webdriverio will figure it out on it's own, but I will leave it in case it's helpful in the future https://webdriver.io/docs/configurationfile.html
-      'goog:chromeOptions': {
-        binary: AtomLauncherPath,
-        args: [
-          `atom-path=${AtomPath}`,
-          `atom-args=${args.join(' ')}`,
-          `atom-env=${Object.entries(env)
-            .map(([key, value]) => `${key}=${value}`)
-            .join(' ')}`,
-          'dev',
-          'safe',
-          `user-data-dir=${userDataDir}`
-        ]
-      }
-    }
-  });
-
-  client.addCommand('waitForPaneItemCount', async function(count, timeout) {
-    await this.waitUntil(
-      () =>
-        this.execute(() => atom.workspace.getActivePane().getItems().length),
-      timeout
-    );
-  });
-  client.addCommand('treeViewRootDirectories', async function() {
-    const treeViewElement = await this.$('.tree-view');
-    await treeViewElement.waitForExist(10000);
-    return this.execute(() =>
-      Array.from(
-        document.querySelectorAll('.tree-view .project-root > .header .name')
-      ).map(element => element.dataset.path)
-    );
-  });
-  client.addCommand('dispatchCommand', async function(command) {
-    return this.execute(
-      command => atom.commands.dispatch(document.activeElement, command),
-      command
-    );
-  });
-
-  return client;
-};
-
-module.exports = function(args, env, fn) {
-  let chromedriver, chromedriverLogs, chromedriverExit;
-
-  runs(() => {
-    chromedriver = spawn(ChromedriverPath, [
-      '--verbose',
-      `--port=${ChromedriverPort}`,
-      `--url-base=${ChromedriverURLBase}`
-    ]);
-
-    chromedriverLogs = [];
-    chromedriverExit = new Promise(resolve => {
-      let errorCode = null;
-      chromedriver.on('exit', (code, signal) => {
-        if (signal == null) {
-          errorCode = code;
-        }
-      });
-      chromedriver.stderr.on('data', log =>
-        chromedriverLogs.push(log.toString())
-      );
-      chromedriver.stderr.on('close', () => resolve(errorCode));
-    });
-  });
-
-  waitsFor('webdriver to start', chromeDriverUp, 15000);
-
-  waitsFor(
-    'tests to run',
-    async done => {
-      const finish = once(async () => {
-        await client.deleteSession();
-        chromedriver.kill();
-
-        const errorCode = await chromedriverExit;
-        if (errorCode != null) {
-          jasmine.getEnv().currentSpec
-            .fail(`Chromedriver exited with code ${errorCode}.
-Logs:\n${chromedriverLogs.join('\n')}`);
-        }
-        done();
-      });
-
-      let client;
-      try {
-        client = await buildAtomClient(args, env);
-      } catch (error) {
-        jasmine
-          .getEnv()
-          .currentSpec.fail(`Unable to build Atom client.\n${error}`);
-        finish();
-        return;
-      }
-
-      try {
-        await client.waitUntil(async function() {
-          const handles = await this.getWindowHandles();
-          return handles.length > 0;
-        }, 10000);
-      } catch (error) {
-        jasmine
-          .getEnv()
-          .currentSpec.fail(`Unable to locate windows.\n\n${error}`);
-        finish();
-        return;
-      }
-
-      try {
-        const workspaceElement = await client.$('atom-workspace');
-        await workspaceElement.waitForExist(10000);
-      } catch (error) {
-        jasmine
-          .getEnv()
-          .currentSpec.fail(`Unable to find workspace element.\n\n${error}`);
-        finish();
-        return;
-      }
-
-      try {
-        await fn(client);
-      } catch (error) {
-        jasmine.getEnv().currentSpec.fail(error);
-        finish();
-        return;
-      }
-      finish();
-    },
-    60000
-  );
-
-  waitsFor('webdriver to stop', chromeDriverDown, 15000);
-};
diff --git a/spec/integration/smoke-spec.js b/spec/integration/smoke-spec.js
deleted file mode 100644
index f7b0d490d..000000000
--- a/spec/integration/smoke-spec.js
+++ /dev/null
@@ -1,65 +0,0 @@
-const fs = require('fs-plus');
-const path = require('path');
-const season = require('season');
-const temp = require('temp').track();
-const runAtom = require('./helpers/start-atom');
-
-describe('Smoke Test', () => {
-  // Fails on win32
-  if (process.platform !== 'darwin') {
-    return;
-  }
-
-  const atomHome = temp.mkdirSync('atom-home');
-
-  beforeEach(() => {
-    jasmine.useRealClock();
-    season.writeFileSync(path.join(atomHome, 'config.cson'), {
-      '*': {
-        welcome: { showOnStartup: false },
-        core: {
-          disabledPackages: ['github']
-        }
-      }
-    });
-  });
-
-  /**
-  * TODO: FAILING TEST - This test fails with the following output: (macos only)
-  * timeout: timed out after 15000 msec waiting for webdriver to start 
-  */
-  xit('can open a file in Atom and perform basic operations on it', async () => {
-    const tempDirPath = temp.mkdirSync('empty-dir');
-    const filePath = path.join(tempDirPath, 'new-file');
-
-    fs.writeFileSync(filePath, '', { encoding: 'utf8' });
-
-    runAtom([tempDirPath], { ATOM_HOME: atomHome }, async client => {
-      const roots = await client.treeViewRootDirectories();
-      expect(roots).toEqual([tempDirPath]);
-
-      await client.execute(filePath => atom.workspace.open(filePath), filePath);
-
-      const textEditorElement = await client.$('atom-text-editor');
-      await textEditorElement.waitForExist(5000);
-
-      await client.waitForPaneItemCount(1, 1000);
-
-      await textEditorElement.click();
-
-      const closestElement = await client.execute(() =>
-        document.activeElement.closest('atom-text-editor')
-      );
-      expect(closestElement).not.toBeNull();
-
-      await client.keys('Hello!');
-
-      const text = await client.execute(() =>
-        atom.workspace.getActiveTextEditor().getText()
-      );
-      expect(text).toBe('Hello!');
-
-      await client.dispatchCommand('editor:delete-line');
-    });
-  });
-});
diff --git a/spec/jasmine-list-reporter.js b/spec/jasmine-list-reporter.js
index 0928a13f1..6e3fe5bc9 100644
--- a/spec/jasmine-list-reporter.js
+++ b/spec/jasmine-list-reporter.js
@@ -2,13 +2,7 @@ const { TerminalReporter } = require('jasmine-tagged');
 
 class JasmineListReporter extends TerminalReporter {
   fullDescription(spec) {
-    let fullDescription = 'it ' + spec.description;
-    let currentSuite = spec.suite;
-    while (currentSuite) {
-      fullDescription = currentSuite.description + ' > ' + fullDescription;
-      currentSuite = currentSuite.parentSuite;
-    }
-    return fullDescription;
+    return getFullDescription(spec, true);
   }
 
   reportSpecStarting(spec) {
@@ -23,13 +17,44 @@ class JasmineListReporter extends TerminalReporter {
 
     let msg = '';
     if (result.passed()) {
-      msg = this.stringWithColor_('[pass]', this.color_.pass());
+      msg = "\u001b[34m[pass]\u001b[0m";
     } else {
-      msg = this.stringWithColor_('[FAIL]', this.color_.fail());
+      msg = "\u001b[1m\u001b[31m[FAIL]\u001b[0m";
+
+      this.flatFailures ||= [];
+      this.flatFailures.push(getFullDescription(spec, false))
+
       this.addFailureToFailures_(spec);
     }
     this.printLine_(msg);
   }
+
+  reportFailures_(spec) {
+    super.reportFailures_(spec);
+
+    if(this.flatFailures && this.flatFailures.length > 0) {
+      this.printLine_("\n\nALL TESTS THAT FAILED:")
+      for(let failure of this.flatFailures) {
+        this.printLine_(failure)
+      }
+    }
+  }
 }
 
-module.exports = { JasmineListReporter };
+function getFullDescription(spec, tokens) {
+  let fullDescription = spec.description;
+  if(tokens) fullDescription = `it ${fullDescription}`;
+
+  let currentSuite = spec.suite;
+  while (currentSuite) {
+    if(tokens) {
+      fullDescription = `${currentSuite.description} > ${fullDescription}`;
+    } else {
+      fullDescription = `${currentSuite.description} ${fullDescription}`;
+    }
+    currentSuite = currentSuite.parentSuite;
+  }
+  return fullDescription;
+}
+
+module.exports = { JasmineListReporter, getFullDescription };
diff --git a/spec/jasmine-test-runner.js b/spec/jasmine-test-runner.js
index 585bd6e86..5c91fb7c8 100644
--- a/spec/jasmine-test-runner.js
+++ b/spec/jasmine-test-runner.js
@@ -77,6 +77,12 @@ module.exports = function({logFile, headless, testPaths, buildAtomEnvironment})
   const jasmineEnv = jasmine.getEnv();
   jasmineEnv.addReporter(buildReporter({logFile, headless, resolveWithExitCode}));
 
+  if(process.env.SPEC_FILTER) {
+    const {getFullDescription} = require('./jasmine-list-reporter');
+    const regex = new RegExp(process.env.SPEC_FILTER)
+    jasmineEnv.specFilter = (spec) => getFullDescription(spec, false).match(regex)
+  }
+
   if (process.env.TEST_JUNIT_XML_PATH) {
     const {JasmineJUnitReporter} = require('./jasmine-junit-reporter');
     process.stdout.write(`Outputting JUnit XML to <${process.env.TEST_JUNIT_XML_PATH}>\n`);
diff --git a/src/atom-environment.js b/src/atom-environment.js
index 4b7825c94..6fd920822 100644
--- a/src/atom-environment.js
+++ b/src/atom-environment.js
@@ -53,18 +53,18 @@ const stat = util.promisify(fs.stat);
 
 let nextId = 0;
 
-// Essential: Pulsar global for dealing with packages, themes, menus, and the window.
-//
-// An instance of this class is always available as the `atom` global.
+/**
+ * @class AtomEnvironment
+ * @classdesc Pulsar global for dealing with packages, themes, menus, and the window.
+ *
+ * An instance of this class is always available as the `atom` global.
+ */
 class AtomEnvironment {
-  /*
-  Section: Properties
-  */
 
   constructor(params = {}) {
     this.id = params.id != null ? params.id : nextId++;
 
-    // Public: A {Clipboard} instance
+    /** @type {Clipboard} */
     this.clipboard = params.clipboard;
     this.updateProcessEnv = params.updateProcessEnv || updateProcessEnv;
     this.enablePersistence = params.enablePersistence;
@@ -77,19 +77,19 @@ class AtomEnvironment {
     this.disposables = new CompositeDisposable();
     this.pathsWithWaitSessions = new Set();
 
-    // Public: A {DeserializerManager} instance
+    /** @type {DeserializerManager} */
     this.deserializers = new DeserializerManager(this);
     this.deserializeTimings = {};
 
-    // Public: A {ViewRegistry} instance
+    /** @type {ViewRegistry} */
     this.views = new ViewRegistry(this);
 
-    // Public: A {NotificationManager} instance
+    /** @type {NotificationManager} */
     this.notifications = new NotificationManager();
 
     this.stateStore = new StateStore('AtomEnvironments', 1);
 
-    // Public: A {Config} instance
+    /** @type {Config} */
     this.config = new Config({
       saveCallback: settings => {
         if (this.enablePersistence) {
@@ -105,28 +105,28 @@ class AtomEnvironment {
       properties: _.clone(ConfigSchema)
     });
 
-    // Public: A {KeymapManager} instance
+    /** @type {KeymapManager} */
     this.keymaps = new KeymapManager({
       notificationManager: this.notifications
     });
 
-    // Public: A {TooltipManager} instance
+    /** @type {TooltipManager} */
     this.tooltips = new TooltipManager({
       keymapManager: this.keymaps,
       viewRegistry: this.views
     });
 
-    // Public: A {CommandRegistry} instance
+    /** @type {CommandRegistry} */
     this.commands = new CommandRegistry();
     this.uriHandlerRegistry = new URIHandlerRegistry();
 
-    // Public: A {GrammarRegistry} instance
+    /** @type {GrammarRegistry} */
     this.grammars = new GrammarRegistry({ config: this.config });
 
-    // Public: A {StyleManager} instance
+    /** @type {StyleManager} */
     this.styles = new StyleManager();
 
-    // Public: A {PackageManager} instance
+    /** @type {PackageManager} */
     this.packages = new PackageManager({
       config: this.config,
       styleManager: this.styles,
@@ -139,7 +139,7 @@ class AtomEnvironment {
       uriHandlerRegistry: this.uriHandlerRegistry
     });
 
-    // Public: A {ThemeManager} instance
+    /** @type {ThemeManager} */
     this.themes = new ThemeManager({
       packageManager: this.packages,
       config: this.config,
@@ -148,20 +148,20 @@ class AtomEnvironment {
       viewRegistry: this.views
     });
 
-    // Public: A {MenuManager} instance
+    /** @type {MenuManager} */
     this.menu = new MenuManager({
       keymapManager: this.keymaps,
       packageManager: this.packages
     });
 
-    // Public: A {ContextMenuManager} instance
+    /** @type {ContextMenuManager} */
     this.contextMenu = new ContextMenuManager({ keymapManager: this.keymaps });
 
     this.packages.setMenuManager(this.menu);
     this.packages.setContextMenuManager(this.contextMenu);
     this.packages.setThemeManager(this.themes);
 
-    // Public: A {Project} instance
+    /** @type {Project} */
     this.project = new Project({
       notificationManager: this.notifications,
       packageManager: this.packages,
@@ -172,7 +172,7 @@ class AtomEnvironment {
     this.commandInstaller = new CommandInstaller(this.applicationDelegate);
     this.protocolHandlerInstaller = new ProtocolHandlerInstaller();
 
-    // Public: A {TextEditorRegistry} instance
+    /** @type {TextEditorRegistry} */
     this.textEditors = new TextEditorRegistry({
       config: this.config,
       grammarRegistry: this.grammars,
@@ -180,7 +180,7 @@ class AtomEnvironment {
       packageManager: this.packages
     });
 
-    // Public: A {Workspace} instance
+    /** @type {Workspace} */
     this.workspace = new Workspace({
       config: this.config,
       project: this.project,
@@ -215,7 +215,7 @@ class AtomEnvironment {
       applicationDelegate: this.applicationDelegate
     });
 
-    // Public: A {HistoryManager} instance
+    /** @type {HistoryManager} */
     this.history = new HistoryManager({
       project: this.project,
       commands: this.commands,
@@ -340,6 +340,12 @@ class AtomEnvironment {
     );
   }
 
+  /**
+   * @name preloadPackages
+   * @private
+   * @memberof AtomEnvironment
+   * @desc Returns output of `preloadPackages()` for this Classes Instance of `Packages`.
+   */
   preloadPackages() {
     return this.packages.preloadPackages();
   }
@@ -470,15 +476,15 @@ class AtomEnvironment {
     this.uninstallWindowEventHandler();
   }
 
-  /*
-  Section: Event Subscription
-  */
-
-  // Extended: Invoke the given callback whenever {::beep} is called.
-  //
-  // * `callback` {Function} to be called whenever {::beep} is called.
-  //
-  // Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
+  /**
+   * @memberof AtomEnvironment
+   * @function onDidBeep
+   * @desc Invoke the given callback whenever {@link ::beep} is called.
+   * @listens ::beep
+   * @param {function} callback - Function to be called whenever {@link ::beep} is called.
+   * @returns {Disposable} on which `.dispose()` can be called to unsubscribe.
+   * @category Event Subscription
+   */
   onDidBeep(callback) {
     return this.emitter.on('did-beep', callback);
   }
@@ -1189,11 +1195,11 @@ class AtomEnvironment {
     this.packages.triggerActivationHook('core:loaded-shell-environment');
   }
 
-  /*
-  Section: Messaging the User
-  */
-
-  // Essential: Visually and audibly trigger a beep.
+  /**
+   * Visually and audibly trigger a beep.
+   * @fires beep
+   * @category Messaging the User
+   */
   beep() {
     if (this.config.get('core.audioBeep'))
       this.applicationDelegate.playBeepSound();
diff --git a/src/clipboard.js b/src/clipboard.js
index 9b047d7e0..2dd58ff8b 100644
--- a/src/clipboard.js
+++ b/src/clipboard.js
@@ -12,6 +12,17 @@ const { clipboard } = require('electron');
 //
 // console.log(atom.clipboard.read()) // 'hello'
 // ```
+/**
+ * @class Clipboard
+ * @desc Represents the clipboard used for copying and pasting in Pulsar.
+ *
+ * An instance of this class is always available as the `atom.clipboard` global.
+ * @example
+ * // returns 'hello'
+ * atom.clipboard.write('hello');
+ *
+ * console.log(atom.clipboard.read());
+ */
 module.exports = class Clipboard {
   constructor() {
     this.reset();
diff --git a/src/coffee-script.js b/src/coffee-script.js
index dcd93ca2e..508c1e244 100644
--- a/src/coffee-script.js
+++ b/src/coffee-script.js
@@ -21,9 +21,9 @@ exports.getCachePath = function(sourceCode) {
 exports.compile = function(sourceCode, filePath) {
   if (!CoffeeScript) {
     const previousPrepareStackTrace = Error.prepareStackTrace;
-    CoffeeScript = require('coffee-script');
+    CoffeeScript = require('coffeescript');
 
-    // When it loads, coffee-script reassigns Error.prepareStackTrace. We have
+    // When it loads, coffeescript reassigns Error.prepareStackTrace. We have
     // already reassigned it via the 'source-map-support' module, so we need
     // to set it back.
     Error.prepareStackTrace = previousPrepareStackTrace;
diff --git a/src/command-installer.js b/src/command-installer.js
index a00747a94..384e54324 100644
--- a/src/command-installer.js
+++ b/src/command-installer.js
@@ -60,8 +60,8 @@ module.exports = class CommandInstaller {
 
   installAtomCommand(askForPrivilege, callback) {
     this.installCommand(
-      path.join(this.getResourcesDirectory(), 'app', 'pulsar.sh'),
-      this.getCommandNameForChannel('pulsar'),
+      path.join(this.getResourcesDirectory(), 'pulsar.sh'),
+      'pulsar',
       askForPrivilege,
       callback
     );
@@ -72,12 +72,11 @@ module.exports = class CommandInstaller {
       path.join(
         this.getResourcesDirectory(),
         'app',
-        'apm',
-        'node_modules',
-        '.bin',
+        'ppm',
+        'bin',
         'apm'
       ),
-      this.getCommandNameForChannel('apm'),
+      'ppm',
       askForPrivilege,
       callback
     );
diff --git a/src/config-file.js b/src/config-file.js
index 6b4a53d3e..cee35b442 100644
--- a/src/config-file.js
+++ b/src/config-file.js
@@ -92,8 +92,8 @@ module.exports = class ConfigFile {
         On linux there are currently problems with watch sizes.
         See [this document][watches] for more info.
 
-        [watches]:https://github.com/atom/atom/blob/master/docs/build-instructions/linux.md#typeerror-unable-to-watch-path\
-      `
+        [watches]:https://pulsar-edit.dev/docs/atom-archive/hacking-atom/#typeerror-unable-to-watch-path
+      `//TODO: Update the above to the pulsar docs if we choose to add this
       );
       return new Disposable();
     }
diff --git a/src/config-schema.js b/src/config-schema.js
index e814c81bc..10ebc690b 100644
--- a/src/config-schema.js
+++ b/src/config-schema.js
@@ -1,5 +1,5 @@
 // This is loaded by atom-environment.coffee. See
-// https://atom.io/docs/api/latest/Config for more information about config
+// https://atom.io/docs/api/latest/Config for more information about config TODO: Link to Pulsar API site when documented
 // schemas.
 const configSchema = {
   core: {
@@ -312,7 +312,7 @@ const configSchema = {
         enum: ['no', 'yes', 'always'],
         default: 'yes',
         description:
-          "When selected 'no', a blank environment is loaded. When selected 'yes' and Pulsar is started from the icon or `atom` by itself from the command line, restores the last state of all Pulsar windows; otherwise a blank environment is loaded. When selected 'always', restores the last state of all Pulsar windows always, no matter how Pulsar is started."
+          "When selected 'no', a blank environment is loaded. When selected 'yes' and Pulsar is started from the icon or `pulsar` by itself from the command line, restores the last state of all Pulsar windows; otherwise a blank environment is loaded. When selected 'always', restores the last state of all Pulsar windows always, no matter how Pulsar is started."
       },
       reopenProjectMenuCount: {
         description:
@@ -322,14 +322,14 @@ const configSchema = {
       },
       automaticallyUpdate: {
         description:
-          'Automatically update Pulsar when a new release is available.',
+          'Automatically update Pulsar when a new release is available. **Note**: Currently not functional, please download new releases from [pulsar-edit.dev](https://pulsar-edit.dev/download.html)',
         type: 'boolean',
-        default: true
+        default: false
       },
       useProxySettingsWhenCallingApm: {
-        title: 'Use Proxy Settings When Calling APM',
+        title: 'Use Proxy Settings When Calling PPM',
         description:
-          'Use detected proxy settings when calling the `apm` command-line tool.',
+          'Use detected proxy settings when calling the `pulsar -p` or `ppm` command-line tool.',
         type: 'boolean',
         default: true
       },
@@ -594,7 +594,7 @@ const configSchema = {
         type: 'boolean',
         default: true,
         description:
-          'Add multiple cursors when pressing the Ctrl key (Command key on MacOS) and clicking the editor.'
+          'Add multiple cursors when pressing the Ctrl key (Command key on macOS) and clicking the editor.'
       }
     }
   }
@@ -621,7 +621,7 @@ if (process.platform === 'darwin') {
     type: 'boolean',
     default: false,
     description:
-      'Use pre-Lion fullscreen on macOS. This does not create a new desktop space for the atom on fullscreen mode.'
+      'Use pre-Lion fullscreen on macOS. This does not create a new desktop space for Pulsar on fullscreen mode.'
   };
 }
 
diff --git a/src/config.js b/src/config.js
index 596398e47..2e6f98841 100644
--- a/src/config.js
+++ b/src/config.js
@@ -79,7 +79,7 @@ const schemaEnforcers = {};
 //   # ...
 // ```
 //
-// See [package docs](http://flight-manual.atom.io/hacking-atom/sections/package-word-count/) for
+// See [package docs](https://pulsar-edit.dev/docs/launch-manual/sections/core-hacking/#package-word-count) for
 // more info.
 //
 // ## Config Schemas
@@ -329,7 +329,7 @@ const schemaEnforcers = {};
 //
 // * **bold** - `**bold**`
 // * *italics* - `*italics*`
-// * [links](https://atom.io) - `[links](https://atom.io)`
+// * [links](https://pulsar-edit.dev) - `[links](https://pulsar-edit.dev)`
 // * `code spans` - `` `code spans` ``
 // * line breaks - `line breaks<br/>`
 // * ~~strikethrough~~ - `~~strikethrough~~`
@@ -487,7 +487,7 @@ class Config {
   //   * `scope` (optional) {ScopeDescriptor} describing a path from
   //     the root of the syntax tree to a token. Get one by calling
   //     {editor.getLastCursor().getScopeDescriptor()}. See {::get} for examples.
-  //     See [the scopes docs](http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/)
+  //     See [the scopes docs](https://pulsar-edit.dev/docs/launch-manual/sections/behind-pulsar#scoped-settings-scopes-and-scope-descriptors)
   //     for more information.
   // * `callback` {Function} to call when the value of the key changes.
   //   * `value` the new value of the key
@@ -531,7 +531,7 @@ class Config {
   //   * `scope` (optional) {ScopeDescriptor} describing a path from
   //     the root of the syntax tree to a token. Get one by calling
   //     {editor.getLastCursor().getScopeDescriptor()}. See {::get} for examples.
-  //     See [the scopes docs](http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/)
+  //     See [the scopes docs](https://pulsar-edit.dev/docs/launch-manual/sections/behind-pulsar#scoped-settings-scopes-and-scope-descriptors)
   //     for more information.
   // * `callback` {Function} to call when the value of the key changes.
   //   * `event` {Object}
@@ -613,7 +613,7 @@ class Config {
   //   * `scope` (optional) {ScopeDescriptor} describing a path from
   //     the root of the syntax tree to a token. Get one by calling
   //     {editor.getLastCursor().getScopeDescriptor()}
-  //     See [the scopes docs](http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/)
+  //     See [the scopes docs](https://pulsar-edit.dev/docs/launch-manual/sections/behind-pulsar#scoped-settings-scopes-and-scope-descriptors)
   //     for more information.
   //
   // Returns the value from Pulsar's default settings, the user's configuration
@@ -720,7 +720,7 @@ class Config {
   //   setting to the default value.
   // * `options` (optional) {Object}
   //   * `scopeSelector` (optional) {String}. eg. '.source.ruby'
-  //     See [the scopes docs](http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/)
+  //     See [the scopes docs](https://pulsar-edit.dev/docs/launch-manual/sections/behind-pulsar#scoped-settings-scopes-and-scope-descriptors)
   //     for more information.
   //   * `source` (optional) {String} The name of a file with which the setting
   //     is associated. Defaults to the user's config file.
diff --git a/src/keymap-extensions.js b/src/keymap-extensions.js
index 36fcd190e..9fdbe2b21 100644
--- a/src/keymap-extensions.js
+++ b/src/keymap-extensions.js
@@ -61,7 +61,7 @@ KeymapManager.prototype.loadUserKeymap = function() {
 
         On linux there are currently problems with watch sizes. See \
         [this document][watches] for more info. \
-        [watches]:https://github.com/atom/atom/blob/master/docs/build-instructions/linux.md#typeerror-unable-to-watch-path`;
+        [watches]:https://pulsar-edit.dev/docs/atom-archive/hacking-atom/#typeerror-unable-to-watch-path`; //TODO: Update the above to Pulsar docs if we choose to add this
       this.notificationManager.addError(message, {dismissable: true});
     }
     else {
diff --git a/src/main-process/atom-application.js b/src/main-process/atom-application.js
index 3c25c7a06..e9ff0df4d 100644
--- a/src/main-process/atom-application.js
+++ b/src/main-process/atom-application.js
@@ -39,17 +39,6 @@ const LocationSuffixRegExp = /(:\d+)(:\d+)?$/;
 // incompatible way.
 const APPLICATION_STATE_VERSION = '1';
 
-const getDefaultPath = () => {
-  const editor = atom.workspace.getActiveTextEditor();
-  if (!editor || !editor.getPath()) {
-    return;
-  }
-  const paths = atom.project.getPaths();
-  if (paths) {
-    return paths[0];
-  }
-};
-
 const getSocketSecretPath = applicationVersion => {
   const { username } = os.userInfo();
   const atomHome = path.resolve(process.env.ATOM_HOME);
@@ -599,7 +588,7 @@ module.exports = class AtomApplication extends EventEmitter {
       shell.openExternal('https://pulsar-edit.dev/docs/launch-manual/sections/faq/')
     );
     this.on('application:open-terms-of-use', () =>
-      shell.openExternal('https://atom.io/terms')
+      shell.openExternal('https://atom.io/terms') //TODO: This needs to be updated for when we have our own published on the site
     );
     this.on('application:report-issue', () =>
       shell.openExternal(
@@ -632,25 +621,37 @@ module.exports = class AtomApplication extends EventEmitter {
       });
 
       this.on('application:open', () => {
-        this.promptForPathToOpen(
-          'all',
-          createOpenSettings({ sameWindow: true }),
-          getDefaultPath()
-        );
+        const win = this.focusedWindow();
+        if(win) {
+          win.sendCommand('application:open')
+        } else {
+          this.promptForPathToOpen(
+            'all',
+            createOpenSettings({ sameWindow: true })
+          );
+        }
       });
       this.on('application:open-file', () => {
-        this.promptForPathToOpen(
-          'file',
-          createOpenSettings({ sameWindow: true }),
-          getDefaultPath()
-        );
+        const win = this.focusedWindow();
+        if(win) {
+          win.sendCommand('application:open-file')
+        } else {
+          this.promptForPathToOpen(
+            'file',
+            createOpenSettings({ sameWindow: true })
+          );
+        }
       });
       this.on('application:open-folder', () => {
-        this.promptForPathToOpen(
-          'folder',
-          createOpenSettings({ sameWindow: true }),
-          getDefaultPath()
-        );
+        const win = this.focusedWindow();
+        if(win) {
+          win.sendCommand('application:open-folder')
+        } else {
+          this.promptForPathToOpen(
+            'folder',
+            createOpenSettings({ sameWindow: true })
+          );
+        }
       });
 
       this.on('application:bring-all-windows-to-front', () =>
diff --git a/src/main-process/atom-window.js b/src/main-process/atom-window.js
index 39d49d8e8..cf180e3b4 100644
--- a/src/main-process/atom-window.js
+++ b/src/main-process/atom-window.js
@@ -263,7 +263,7 @@ module.exports = class AtomWindow extends EventEmitter {
         buttons: ['Close Window', 'Reload', 'Keep It Open'],
         cancelId: 2, // Canceling should be the least destructive action
         message: 'The editor has crashed',
-        detail: 'Please report this issue to https://github.com/atom/atom'
+        detail: 'Please report this issue to https://github.com/pulsar-edit/pulsar'
       });
 
       switch (result.response) {
diff --git a/src/main-process/main.js b/src/main-process/main.js
index cc195d102..95d88329d 100644
--- a/src/main-process/main.js
+++ b/src/main-process/main.js
@@ -39,9 +39,10 @@ if (args.resourcePath) {
 } else {
   const stableResourcePath = path.dirname(path.dirname(__dirname));
   const defaultRepositoryPath = path.join(
+    // Setting the path for the app
     app.getPath('home'),
     'github',
-    'atom'
+    'pulsar'
   );
 
   if (process.env.ATOM_DEV_RESOURCE_PATH) {
diff --git a/src/main-process/parse-command-line.js b/src/main-process/parse-command-line.js
index 80d7f8197..6eace2f15 100644
--- a/src/main-process/parse-command-line.js
+++ b/src/main-process/parse-command-line.js
@@ -149,7 +149,12 @@ module.exports = function parseCommandLine(processArgs) {
     const PackageManager = require('../package-manager');
     const cp = require('child_process');
     const ppmPath = PackageManager.possibleApmPaths();
-    const ppmArgs = args['_'];
+
+    let ppmArgs = [...processArgs]
+    while(true) {
+      const arg = ppmArgs.shift()
+      if(arg === '-p' || arg === '--package' || ppmArgs.length === 0) break;
+    }
     const exitCode = cp.spawnSync(ppmPath, ppmArgs, {stdio: 'inherit'}).status;
     process.exit(exitCode);
     return;
@@ -190,7 +195,7 @@ module.exports = function parseCommandLine(processArgs) {
       `Only one of the --add and --new-window options may be specified at the same time.\n\n${options.help()}`
     );
 
-    // Exiting the main process with a nonzero exit code on MacOS causes the app open to fail with the mysterious
+    // Exiting the main process with a nonzero exit code on macOS causes the app open to fail with the mysterious
     // message "LSOpenURLsWithRole() failed for the application /Applications/Pulsar Dev.app with error -10810."
     process.exit(0);
   }
diff --git a/src/main-process/start.js b/src/main-process/start.js
index cad16904e..303c7a5ab 100644
--- a/src/main-process/start.js
+++ b/src/main-process/start.js
@@ -75,7 +75,7 @@ module.exports = function start(resourcePath, devResourcePath, startTime) {
   }
 
   const releaseChannel = getReleaseChannel(app.getVersion());
-  let appUserModelId = 'com.squirrel.atom.' + process.arch;
+  let appUserModelId = 'dev.pulsar-edit.pulsar.' + process.arch;
 
   // If the release channel is not stable, we append it to the app user model id.
   // This allows having the different release channels as separate items in the taskbar.
diff --git a/src/overlay-manager.js b/src/overlay-manager.js
deleted file mode 100644
index 4e669a051..000000000
--- a/src/overlay-manager.js
+++ /dev/null
@@ -1,85 +0,0 @@
-const ElementResizeDetector = require('element-resize-detector');
-
-var elementResizeDetector = null;
-
-module.exports = class OverlayManager {
-
-  constructor(presenter, container, views) {
-    this.presenter = presenter;
-    this.container = container;
-    this.views = views;
-    this.overlaysById = {};
-  }
-
-  render(state) {
-    for (let decorationId in state.content.overlays) {
-      const overlay = state.content.overlays[decorationId];
-      if (this.shouldUpdateOverlay(decorationId, overlay)) {
-        this.renderOverlay(state, decorationId, overlay);
-      }
-    }
-    for (let id in this.overlaysById) {
-      const {overlayNode} = this.overlaysById[id];
-      if (!state.content.overlays.hasOwnProperty(id)) {
-        delete this.overlaysById[id];
-        overlayNode.remove();
-      }
-    }
-  }
-
-  shouldUpdateOverlay(decorationId, overlay) {
-    const cachedOverlay = this.overlaysById[decorationId];
-    if (cachedOverlay == null || cachedOverlay.pixelPosition == null) {
-      return true;
-    }
-    let cacheTop, cacheLeft, top, left;
-    if (cachedOverlay.pixelPosition != null) {
-      cacheTop = cachedOverlay.pixelPosition.top;
-      cacheLeft = cachedOverlay.pixelPosition.left;
-    }
-    if (overlay.pixelPosition == null) {
-      {top, left} = overlay.pixelPosition;
-    }
-    return cacheTop != top || cacheLeft != left;
-  }
-
-  measureOverlay(decorationId, itemView) {
-    const contentMargin = parseInt(getComputedStyle(itemView)['margin-left']) || 0;
-    this.presenter.setOverlayDimensions(decorationId, itemView.offsetWidth, itemView.offsetHeight, contentMargin);
-  }
-
-  renderOverlay(state, decorationId, { item, pixelPosition, class: klass}) {
-    let overlayNode;
-    const itemView = this.views.getView(item);
-    let cachedOverlay = this.overlaysById[decorationId];
-    if (cachedOverlay != null && cachedOverlay.overlayNode != null) {
-      overlayNode = cachedOverlay.overlayNode
-    }
-    else {
-      overlayNode = document.createElement('atom-overlay');
-      if (klass != null) {
-        overlayNode.classList.add(klass);
-      }
-      if (elementResizeDetector == null) {
-        elementResizeDetector = ElementResizeDetector({strategy: 'scroll'});
-      }
-      elementResizeDetector.listenTo(overlayNode, () => {
-        if (overlayNode.parentElement != null) {
-          this.measureOverlay(decorationId, itemView);
-        }
-      });
-      this.container.appendChild(overlayNode);
-      this.overlaysById[decorationId] = cachedOverlay = {overlayNode, itemView};
-    }
-    if (!overlayNode.contains(itemView)) {
-      // The same node may be used in more than one overlay. This steals the node
-      // back if it has been displayed in another overlay.
-      overlayNode.appendChild(itemView);
-    }
-    cachedOverlay.pixelPosition = pixelPosition;
-    overlayNode.style.top = pixelPosition.top + 'px';
-    overlayNode.style.left = pixelPosition.left + 'px';
-    this.measureOverlay(decorationId, itemView);
-  }
-
-};
diff --git a/src/package.js b/src/package.js
index c567a4573..24b4fbfa3 100644
--- a/src/package.js
+++ b/src/package.js
@@ -897,7 +897,7 @@ module.exports = class Package {
         Failed to require the main module of '${
           this.name
         }' because it requires one or more incompatible native modules (${nativeModuleNames}).
-        Run \`apm rebuild\` in the package directory and restart Pulsar to resolve.\
+        Run \`pulsar -p rebuild\` in the package directory and restart Pulsar to resolve.\
       `);
     } else {
       const mainModulePath = this.getMainModulePath();
@@ -1252,7 +1252,7 @@ module.exports = class Package {
   //
   // Returns a {Promise} that resolves with an object containing `code`,
   // `stdout`, and `stderr` properties based on the results of running
-  // `apm rebuild` on the package.
+  // `pulsar -p rebuild` on the package.
   rebuild() {
     return new Promise(resolve =>
       this.runRebuildProcess(result => {
diff --git a/src/scope-descriptor.js b/src/scope-descriptor.js
index 111ce5676..6dcfed402 100644
--- a/src/scope-descriptor.js
+++ b/src/scope-descriptor.js
@@ -15,7 +15,7 @@
 //   specific position in the buffer.
 // * {Cursor::getScopeDescriptor} to get a cursor's descriptor based on position.
 //
-// See the [scopes and scope descriptor guide](http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/)
+// See the [scopes and scope descriptor guide](https://pulsar-edit.dev/docs/launch-manual/sections/behind-pulsar#scoped-settings-scopes-and-scope-descriptors)
 // for more information.
 module.exports = class ScopeDescriptor {
   static fromObject(scopes) {
diff --git a/src/special-token-symbols.js b/src/special-token-symbols.js
deleted file mode 100644
index 06884b85f..000000000
--- a/src/special-token-symbols.js
+++ /dev/null
@@ -1,6 +0,0 @@
-module.exports = {
-  SoftTab: Symbol('SoftTab')
-  HardTab: Symbol('HardTab')
-  PairedCharacter: Symbol('PairedCharacter')
-  SoftWrapIndent: Symbol('SoftWrapIndent')
-}
diff --git a/src/test.ejs b/src/test.ejs
deleted file mode 100644
index 7b93c31b3..000000000
--- a/src/test.ejs
+++ /dev/null
@@ -1,9 +0,0 @@
-<html>
-
-<% if something() { %>
-  <div class=foo>
-    <%= html `ok how about <span>this</span>` %>
-  </div>
-<% } %>
-
-</html>
diff --git a/src/theme-manager.js b/src/theme-manager.js
index a25d08937..c520f1bc8 100644
--- a/src/theme-manager.js
+++ b/src/theme-manager.js
@@ -244,8 +244,8 @@ you have permissions to \`${userStylesheetPath}\`.
 
 On linux there are currently problems with watch sizes. See
 [this document][watches] for more info.
-[watches]:https://github.com/atom/atom/blob/master/docs/build-instructions/linux.md#typeerror-unable-to-watch-path\
-`;
+[watches]:https://pulsar-edit.dev/docs/atom-archive/hacking-atom/#typeerror-unable-to-watch-path
+`; //TODO: Update the above to Pulsar docs if we choose to add this
       this.notificationManager.addError(message, { dismissable: true });
     }
 
diff --git a/static/core-ui/text-editor.less b/static/core-ui/text-editor.less
index 8106db9eb..d1b25729d 100644
--- a/static/core-ui/text-editor.less
+++ b/static/core-ui/text-editor.less
@@ -98,6 +98,10 @@ atom-text-editor {
     z-index: -1;
   }
 
+  .selection .region {
+    background-color: @syntax-selection-color;
+  }
+
   .line {
     white-space: pre;
     contain: @contain_except_size;