Removing any parens we're not forced to use. Lean into it.

plugins/project/project.coffee

@@ -7,15 +7,15 @@ Editor = require 'editor'
 {bindKey} = require 'editor'
 
 exports.init = ->
-  @html = File.read(Chrome.appRoot() + "/plugins/project/project.html")
+  @html = File.read Chrome.appRoot() + "/plugins/project/project.html"
 
   bindKey 'toggleProjectDrawer', 'Command-Ctrl-N', (env) =>
     @toggle()
 
   $('#project .file').live 'click', (event) =>
     el = $(event.currentTarget)
-    path =  decodeURIComponent el.attr('path')
-    Editor.open(path)
+    path =  decodeURIComponent el.attr 'path'
+    Editor.open path
 
 exports.toggle = ->
   if @showing
@@ -28,12 +28,12 @@ exports.toggle = ->
 
 exports.reload = ->
   dir = OSX.NSFileManager.defaultManager.currentDirectoryPath
-  $('#project .cwd').text(dir)
+  $('#project .cwd').text dir
 
-  files = Dir.list(dir)
+  files = Dir.list dir
   listItems = _.map files, (path) ->
-    filename = path.replace(dir, "").substring(1)
+    filename = path.replace(dir, "").substring 1
     type = if Dir.isDir(path) then 'dir' else 'file'
     "<li class='#{type}' path='#{encodeURIComponent path}'>#{filename}</li>"
 
-  $('#project .files').append(listItems.join('\n'))
+  $('#project .files').append listItems.join '\n'

plugins/tabs/index.coffee

@@ -1 +1 @@
-exports.Tabs = Tabs = require('tabs/tabs')
+exports.Tabs = Tabs = require 'tabs/tabs'

plugins/tabs/tabs.coffee

@@ -26,7 +26,7 @@ bindKey 'toggleTabs', 'Command-Ctrl-T', (env) ->
 showTabs = ->
   Chrome.addPane 'top', require('tabs/tabs.html')
   $('#tabs').parents('.pane').css height: 'inherit'
-  css = $('<style id="tabs-style"></style>').html require('tabs/tabs.css')
+  css = $('<style id="tabs-style"></style>').html require 'tabs/tabs.css'
   $('head').append css
 
 hideTabs = ->

src/bootstrap.coffee

@@ -3,7 +3,7 @@
 console.originalLog = console.log
 console.log = (thing) ->
   OSX.NSLog thing.toString() if thing?
-  console.originalLog(thing)
+  console.originalLog thing
 
 
 # load require() function

src/editor.coffee

@@ -35,9 +35,9 @@ save = ->
 exports.open = open = (path) ->
   filename = path
 
-  if Dir.isDir(filename)
-    Process.cwd(filename)
-    Chrome.title _.last filename.split('/')
+  if Dir.isDir filename
+    Process.cwd filename
+    Chrome.title _.last filename.split '/'
     editor.getSession().setValue ""
     setMode()
     Chrome.setDirty false
@@ -45,7 +45,7 @@ exports.open = open = (path) ->
     if /png|jpe?g|gif/i.test filename
       Chrome.openURL filename
     else
-      Chrome.title _.last filename.split('/')
+      Chrome.title _.last filename.split '/'
       editor.getSession().setValue File.read filename
       setMode()
       Chrome.setDirty false
@@ -59,7 +59,7 @@ setMode = ->
 saveAs = ->
   if file = Chrome.savePanel()
     filename = file
-    Chrome.title _.last filename.split('/')
+    Chrome.title _.last filename.split '/'
     save()
 exports.bindKey = bindKey = (name, shortcut, callback) ->
   canon.addCommand
@@ -73,7 +73,7 @@ exports.bindKey = bindKey = (name, shortcut, callback) ->
 
 bindKey 'open', 'Command-O', (env, args, request) ->
   if file = Chrome.openPanel()
-    open(file)
+    open file
 
 bindKey 'openURL', 'Command-Shift-O', (env, args, request) ->
   if url = prompt "Enter URL:"

src/jscocoa.coffee

@@ -3,12 +3,11 @@
 exports.outArgument = (args...) ->
   # Derive to store some javascript data in the internal hash
   if not @outArgument2?
-    OSX.JSCocoa.createClass_parentClass_('JSCocoaOutArgument2', 'JSCocoaOutArgument')
+    OSX.JSCocoa.createClass_parentClass_ 'JSCocoaOutArgument2', 'JSCocoaOutArgument'
 
   o = OSX.JSCocoaOutArgument2.instance
   o.isOutArgument = true
   if args.length == 2
-    o.mateWithMemoryBuffer_atIndex_(args[0], args[1])
-
+    o.mateWithMemoryBuffer_atIndex_ args[0], args[1]
   o
 

src/osx.coffee

@@ -10,19 +10,19 @@ Chrome =
     verticalDiv = $('#app-vertical')
     horizontalDiv = $('#app-horizontal')
 
-    el = document.createElement("div")
-    el.setAttribute('class', "pane " + position)
+    el = document.createElement "div"
+    el.setAttribute 'class', "pane " + position
     el.innerHTML = html
 
     switch position
       when 'top', 'main'
-        verticalDiv.prepend(el)
+        verticalDiv.prepend el
       when 'left'
-        horizontalDiv.prepend(el)
+        horizontalDiv.prepend el
       when 'bottom'
-        verticalDiv.append(el)
+        verticalDiv.append el
       when 'right'
-        horizontalDiv.append(el)
+        horizontalDiv.append el
       else
         throw "I DON'T KNOW HOW TO DEAL WITH #{position}"
 
@@ -51,7 +51,7 @@ Chrome =
   # Returns null or a file path.
   openPanel: ->
     panel = OSX.NSOpenPanel.openPanel
-    panel.setCanChooseDirectories(true)
+    panel.setCanChooseDirectories true
     if panel.runModal isnt OSX.NSFileHandlingPanelOKButton
       return null
     panel.filenames.lastObject
@@ -94,7 +94,8 @@ File =
       path
   isFile: (path) ->
     isDir = new jscocoa.outArgument
-    exists = OSX.NSFileManager.defaultManager.fileExistsAtPath_isDirectory(path, isDir)
+    exists = OSX.NSFileManager.defaultManager.
+      fileExistsAtPath_isDirectory path, isDir
     exists and not isDir.valueOf()
 
 Dir =
@@ -108,18 +109,19 @@ Dir =
     _.map paths, (entry) -> "#{path}/#{entry}"
   isDir: (path) ->
     isDir = new jscocoa.outArgument
-    exists = OSX.NSFileManager.defaultManager.fileExistsAtPath_isDirectory(path, isDir)
+    exists = OSX.NSFileManager.defaultManager.
+      fileExistsAtPath_isDirectory path, isDir
     exists and isDir.valueOf()
 
 Process =
   cwd: (path) ->
     if path?
-      OSX.NSFileManager.defaultManager.changeCurrentDirectoryPath(path)
+      OSX.NSFileManager.defaultManager.changeCurrentDirectoryPath path
     else
-      OSX.NSFileManager.defaultManager.currentDirectoryPath()
+      OSX.NSFileManager.defaultManager.currentDirectoryPath
 
   env: ->
-    OSX.NSProcess.processInfo.environment()
+    OSX.NSProcess.processInfo.environment
 
 exports.Chrome = Chrome
 exports.File = File