diff --git a/README.md b/README.md
index 7cb5bfb..188d62c 100644
--- a/README.md
+++ b/README.md
@@ -50,13 +50,20 @@ brew install denisidoro/tools/navi
 
 ### Using git
 
-Alternatively, you can `git clone` this repository and run `make`:
+Alternatively, you can `git clone` this repository:
 
 ```sh
 git clone --depth 1 https://github.com/denisidoro/navi /opt/navi
 cd /opt/navi
-sudo make install # or ./scripts/install /some/path
-# install fzf: https://github.com/junegunn/fzf
+
+# to install in your $PATH
+sudo make install 
+
+# to install in an arbitrary folder
+./scripts/install /some/path
+
+# install fzf
+# refer to https://github.com/junegunn/fzf
 ```
 
 ### Using oh-my-zsh
@@ -76,7 +83,7 @@ plugins=(docker tmux fzf navi)
 
 Finally, you can use it as a [shell widget](#shell-widget).
 
-This method has the advantage of not requiring root to install and disadvantage of not allowing you to invoke the script by calling `navi` (unless you add an alias to it or copy it to a folder in `$PATH`).
+This method has the advantage of not requiring root to install and the disadvantage of not allowing you to invoke the script by calling `navi` (unless you add an alias to it or copy it to a folder in `$PATH`).
 
 Upgrading
 ---------
diff --git a/cheats/android.cheat b/cheats/android.cheat
new file mode 100644
index 0000000..71e5116
--- /dev/null
+++ b/cheats/android.cheat
@@ -0,0 +1,27 @@
+% android, device
+
+# Get property
+adb -s <device> shell getprop <property>
+
+# Install APK
+adb -s <device> install -r <path>
+
+# Uninstall package
+adb -s <device> uninstall -r <package>
+
+# Clear user data for package
+adb -s <device> shell pm clear <package>
+
+# Dispatch a deep-link / open URI
+adb -s <device> shell am start <uri>
+
+$ device: adb devices --- --headers 1 --column 1
+
+
+
+% android, emulator
+
+# Start emulator
+"$ANDROID_HOME/tools/emulator" -avd <emulator> -netdelay none -netspeed full
+
+$ emulator: "$ANDROID_HOME/tools/emulator" -list-avds
\ No newline at end of file
diff --git a/cheats/awk.cheat b/cheats/awk.cheat
deleted file mode 100644
index 8670cb6..0000000
--- a/cheats/awk.cheat
+++ /dev/null
@@ -1,4 +0,0 @@
-% awk, string
-
-# Print last column
-awk '{print $NF}'
diff --git a/cheats/git.cheat b/cheats/git.cheat
index 04e5131..85b7bbb 100644
--- a/cheats/git.cheat
+++ b/cheats/git.cheat
@@ -74,6 +74,10 @@ git clean -dxf
 git rebase master -S -f
 
 # See all open pull requests of a user on Github
-url::open 'https://github.com/pulls?&q=author:<user>+is:open+is:pr'
+navi fn url::open 'https://github.com/pulls?&q=author:<user>+is:open+is:pr'
+
+# Checkout a branch from a fork
+git fetch origin pull/<pr_number>/head:pr/<pr_number> \
+   && git checkout pr/<pr_number>
 
 $ branch: git branch | awk '{print $NF}'
diff --git a/cheats/misc.cheat b/cheats/misc.cheat
new file mode 100644
index 0000000..10a0753
--- /dev/null
+++ b/cheats/misc.cheat
@@ -0,0 +1,18 @@
+% weather
+
+# Show weather info for current location
+curl -s "wttr.in" \
+   | grep -v "New feature" \
+   | grep -v Follow
+
+# Show weather info for a specific location
+curl -s "wttr.in/<location>" \
+   | grep -v "New feature" \
+   | grep -v Follow
+
+
+
+% qr code
+
+# Create a QR code with the content
+echo <content> | curl -F-=\<- qrenco.de
\ No newline at end of file
diff --git a/cheats/osx.cheat b/cheats/osx.cheat
new file mode 100644
index 0000000..5c374c3
--- /dev/null
+++ b/cheats/osx.cheat
@@ -0,0 +1,20 @@
+% osx, mac os
+
+# Lock system
+pmset displaysleepnow
+
+# Show hidden files in Finder
+defaults write com.apple.finder AppleShowAllFiles -bool true; \
+   killall Finder
+
+# Hide hidden files in Finder
+defaults write com.apple.finder AppleShowAllFiles -bool false; \
+   killall Finder
+
+# Show items in desktop
+defaults write com.apple.finder CreateDesktop -bool true; \
+   killall Finder
+
+# Hide items in desktop
+defaults write com.apple.finder CreateDesktop -bool false; \
+   killall Finder
diff --git a/navi b/navi
index f5d8af9..24e06b4 100755
--- a/navi
+++ b/navi
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-export SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+export NAVI_HOME="$(cd "$(dirname "$0")" && pwd)"
 
-source "${SCRIPT_DIR}/src/main.sh"
+source "${NAVI_HOME}/src/main.sh"
 
 ##? An interactive cheatsheet tool for the command-line
 ##?
@@ -37,7 +37,7 @@ source "${SCRIPT_DIR}/src/main.sh"
 ##?    full docs
 ##?       Please refer to the README at https://github.com/denisidoro/navi
 
-VERSION="0.12.0"
+VERSION="0.13.0"
 NAVI_ENV="${NAVI_ENV:-prod}"
 
 opts::eval "$@"
diff --git a/navi.plugin.bash b/navi.plugin.bash
index 64e3d4d..5ee3757 100644
--- a/navi.plugin.bash
+++ b/navi.plugin.bash
@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
 
-bind '"\C-g": " \C-u \C-a\C-k`printf \"\\e\" && navi --print`\e\C-e\C-y\C-a\C-d\C-y\ey\C-h\C-e\C-b"'
+bind '"\C-g": " \C-u \C-a\C-k`printf \"\\e\" && NAVI_USE_FZF_ALL_INPUTS=true navi --print`\e\C-e\C-y\C-a\C-d\C-y\ey\C-h\C-e\C-b"'
diff --git a/navi.plugin.fish b/navi.plugin.fish
new file mode 100644
index 0000000..d206bb9
--- /dev/null
+++ b/navi.plugin.fish
@@ -0,0 +1,21 @@
+function navi-widget -d 'Call navi'
+  set -q NAVI_USE_FZF_ALL_INPUTS; or set -l NAVI_USE_FZF_ALL_INPUTS "true"
+  begin
+    navi --print | while read -l r; set result $result $r; end
+
+    if [ -n "$result" ]
+      echo $result
+
+      # Remove last token from commandline.
+      commandline -t ""
+    end
+  end
+
+  # commandline -f repaint
+end
+
+bind \cg navi-widget
+
+if bind -M insert > /dev/null 2>&1
+  bind -M insert \cr navi-widget
+end
diff --git a/scripts/install b/scripts/install
index 4aa75b6..e58b4b6 100755
--- a/scripts/install
+++ b/scripts/install
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-export SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
 
 script() {
    echo "#!/usr/bin/env bash"
-   echo "${SCRIPT_DIR}/navi" '"$@"'
+   echo "${NAVI_HOME}/navi" '"$@"'
 }
 
 folder="${1:-/usr/local/bin}"
diff --git a/scripts/lint b/scripts/lint
index 601c3ed..5952fca 100755
--- a/scripts/lint
+++ b/scripts/lint
@@ -3,13 +3,13 @@ set -euo pipefail
 
 # please refer to https://github.com/denisidoro/dotfiles/blob/master/scripts/code/beautify
 
-export SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
 
 files_to_lint() {
    find . -iname '*.sh'
    find scripts/*
-   echo "${SCRIPT_DIR}/test/run"
-   echo "${SCRIPT_DIR}/navi"
+   echo "${NAVI_HOME}/test/run"
+   echo "${NAVI_HOME}/navi"
 }
 
 for f in $(files_to_lint); do
diff --git a/scripts/playground b/scripts/playground
index 62b805f..5ca41bb 100755
--- a/scripts/playground
+++ b/scripts/playground
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-export SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
-export NAVI_PATH="${SCRIPT_DIR}/test:${SCRIPT_DIR}/cheats"
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+export NAVI_PATH="${NAVI_HOME}/test:${NAVI_HOME}/cheats"
 
-"${SCRIPT_DIR}/navi" "$@"
\ No newline at end of file
+"${NAVI_HOME}/navi" "$@"
\ No newline at end of file
diff --git a/scripts/release b/scripts/release
index f07eaad..d82a0dc 100755
--- a/scripts/release
+++ b/scripts/release
@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-export SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
-source "${SCRIPT_DIR}/src/main.sh"
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+source "${NAVI_HOME}/src/main.sh"
 
 sha256() {
    if command_exists sha256sum; then
@@ -22,12 +22,12 @@ header() {
    echo
 }
 
-cd "$SCRIPT_DIR"
+cd "$NAVI_HOME"
 
 header "git pull"
 git pull
 
-version="$(grep VERSION "${SCRIPT_DIR}/navi" | grep -Eo '[0-9\.]+')"
+version="$(grep VERSION "${NAVI_HOME}/navi" | grep -Eo '[0-9\.]+')"
 tag="v${version}"
 tar="https://github.com/denisidoro/navi/archive/${tag}.tar.gz"
 formula="/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/navi.rb"
diff --git a/scripts/update b/scripts/update
index 7ae0e59..a448a42 100755
--- a/scripts/update
+++ b/scripts/update
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-export SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
 
-cd "$SCRIPT_DIR"
+cd "$NAVI_HOME"
 
 git pull
-"${SCRIPT_DIR}/scripts/install" || true
+"${NAVI_HOME}/scripts/install" || true
diff --git a/src/main.sh b/src/main.sh
index dfc9576..26a481e 100644
--- a/src/main.sh
+++ b/src/main.sh
@@ -4,18 +4,18 @@ if ${NAVI_FORCE_GNU:-false} && [ -n "${DOTFILES:-}" ]; then
    source "${DOTFILES}/scripts/core/main.sh"
 fi
 
-source "${SCRIPT_DIR}/src/arg.sh"
-source "${SCRIPT_DIR}/src/cheat.sh"
-source "${SCRIPT_DIR}/src/cmd.sh"
-source "${SCRIPT_DIR}/src/coll.sh"
-source "${SCRIPT_DIR}/src/dict.sh"
-source "${SCRIPT_DIR}/src/health.sh"
-source "${SCRIPT_DIR}/src/misc.sh"
-source "${SCRIPT_DIR}/src/opts.sh"
-source "${SCRIPT_DIR}/src/search.sh"
-source "${SCRIPT_DIR}/src/selection.sh"
-source "${SCRIPT_DIR}/src/str.sh"
-source "${SCRIPT_DIR}/src/ui.sh"
+source "${NAVI_HOME}/src/arg.sh"
+source "${NAVI_HOME}/src/cheat.sh"
+source "${NAVI_HOME}/src/cmd.sh"
+source "${NAVI_HOME}/src/coll.sh"
+source "${NAVI_HOME}/src/dict.sh"
+source "${NAVI_HOME}/src/health.sh"
+source "${NAVI_HOME}/src/misc.sh"
+source "${NAVI_HOME}/src/opts.sh"
+source "${NAVI_HOME}/src/search.sh"
+source "${NAVI_HOME}/src/selection.sh"
+source "${NAVI_HOME}/src/str.sh"
+source "${NAVI_HOME}/src/ui.sh"
 
 handler::main() {
    local -r cheats="$(cheat::memoized_read_all)"
@@ -66,18 +66,22 @@ handler::version() {
    echo "${VERSION:-unknown}"
 
    if $full; then
-      source "${SCRIPT_DIR}/src/version.sh"
+      source "${NAVI_HOME}/src/version.sh"
       version::code 2>/dev/null \
          || die "unknown code"
    fi
 }
 
 handler::script() {
-   "${SCRIPT_DIR}/scripts/${SCRIPT_ARGS[@]}"
+   "${NAVI_HOME}/scripts/"${SCRIPT_ARGS[@]}
+}
+
+handler::fn() {
+   ${SCRIPT_ARGS[@]}
 }
 
 handler::home() {
-   echo "${SCRIPT_DIR}"
+   echo "${NAVI_HOME}"
 }
 
 handler::widget() {
@@ -85,8 +89,9 @@ handler::widget() {
    local -r print="$(dict::get "$OPTIONS" print)"
 
    case "$SH" in
-      zsh) widget="${SCRIPT_DIR}/navi.plugin.zsh" ;;
-      bash) widget="${SCRIPT_DIR}/navi.plugin.bash" ;;
+      zsh) widget="${NAVI_HOME}/navi.plugin.zsh" ;;
+      bash) widget="${NAVI_HOME}/navi.plugin.bash" ;;
+      fish) widget="${NAVI_HOME}/navi.plugin.fish" ;;
       *) die "Invalid shell: $SH" ;;
    esac
 
@@ -124,6 +129,9 @@ main() {
       script)
          handler::script
          ;;
+      fn)
+         handler::fn
+         ;;
       help)
          handler::help
          ;;
diff --git a/src/opts.sh b/src/opts.sh
index ab9666c..2ae9034 100644
--- a/src/opts.sh
+++ b/src/opts.sh
@@ -12,7 +12,7 @@ opts::eval() {
    local print=false
    local interpolation=true
    local preview=true
-   local path="${NAVI_PATH:-${NAVI_DIR:-${SCRIPT_DIR}/cheats}}"
+   local path="${NAVI_PATH:-${NAVI_DIR:-${NAVI_HOME}/cheats}}"
    local autoselect=true
    local best=false
    local query=""
@@ -28,6 +28,7 @@ opts::eval() {
       best|b) best=true; wait_for="best"; shift ;;
       home) entry_point="home"; shift ;;
       script) entry_point="script"; shift; SCRIPT_ARGS="$@" ;;
+      fn) entry_point="fn"; shift; SCRIPT_ARGS="$@" ;;
       widget) entry_point="widget"; shift; wait_for="widget" ;;
    esac
 
diff --git a/src/ui.sh b/src/ui.sh
index 98f61d6..3cc49a8 100644
--- a/src/ui.sh
+++ b/src/ui.sh
@@ -17,7 +17,7 @@ ui::fzf() {
 ui::select() {
    local -r cheats="$1"
 
-   local -r script_path="${SCRIPT_DIR}/navi"
+   local -r script_path="${NAVI_HOME}/navi"
    local -r preview_cmd="echo \'{}\' | $(arg::serialize_code) | xargs -I% \"${script_path}\" preview %"
 
    local -r query="$(dict::get "$OPTIONS" query)"
diff --git a/src/version.sh b/src/version.sh
index 6ec4c48..a830cd8 100644
--- a/src/version.sh
+++ b/src/version.sh
@@ -1,5 +1,5 @@
 version::code() {
-   cd "$SCRIPT_DIR"
+   cd "$NAVI_HOME"
    local -r git_info=$(git log -n 1 --pretty=format:'%h%n%ad%n%s' --date=format:'%Y-%m-%d %Hh%M')
    if [ -z "$git_info" ]; then
       return 1
diff --git a/test/core.sh b/test/core.sh
index bf7d348..6d1f00a 100644
--- a/test/core.sh
+++ b/test/core.sh
@@ -2,11 +2,11 @@
 
 export NAVI_FORCE_GNU=true
 
-source "${SCRIPT_DIR}/src/main.sh"
-source "${SCRIPT_DIR}/test/log.sh"
+source "${NAVI_HOME}/src/main.sh"
+source "${NAVI_HOME}/test/log.sh"
 
 opts::eval "$@"
-TEST_DIR="${SCRIPT_DIR}/test"
+TEST_DIR="${NAVI_HOME}/test"
 
 PASSED=0
 FAILED=0
diff --git a/test/integration_test.sh b/test/integration_test.sh
index fd5ba98..36cf735 100644
--- a/test/integration_test.sh
+++ b/test/integration_test.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
-NAVI_BIN="${SCRIPT_DIR}/navi"
-TEST_DIR="${SCRIPT_DIR}/test"
+NAVI_BIN="${NAVI_HOME}/navi"
+TEST_DIR="${NAVI_HOME}/test"
 
 _navi() {
    "$NAVI_BIN" "$@"
diff --git a/test/run b/test/run
index 14f5a84..661be7a 100755
--- a/test/run
+++ b/test/run
@@ -1,10 +1,10 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-export SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
-source "${SCRIPT_DIR}/test/core.sh"
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+source "${NAVI_HOME}/test/core.sh"
 
-tests="$(find "$SCRIPT_DIR/test" -iname "${1:-}*_test.sh")"
+tests="$(find "$NAVI_HOME/test" -iname "${1:-}*_test.sh")"
 
 for test in $tests; do
    source "$test"