Implement bash auto-completion with fzf

README.md

@@ -16,27 +16,29 @@ fzf requires Ruby (>= 1.8.5).
 Installation
 ------------
 
-Download [fzf executable](https://raw.github.com/junegunn/fzf/master/fzf) and
-put it somewhere in your search $PATH.
+### Using install script
 
-```sh
-mkdir -p ~/bin
-wget https://raw.github.com/junegunn/fzf/master/fzf -O ~/bin/fzf
-chmod +x ~/bin/fzf
-```
-
-Or you can just clone this repository and run
+Clone this repository and run
 [install](https://github.com/junegunn/fzf/blob/master/install) script.
 
 ```sh
-git clone https://github.com/junegunn/fzf.git
-fzf/install
+git clone https://github.com/junegunn/fzf.git ~/.fzf
+~/.fzf/install
 ```
 
-Make sure that ~/bin is included in $PATH.
+The script will add an alias to fzf and auto-completion support to your
+`.bashrc` and `.zshrc`.
+
+### Manual installation
+
+Or you can just download
+[fzf executable](https://raw.github.com/junegunn/fzf/master/fzf) and put it
+somewhere in your search $PATH.
 
 ```sh
-export PATH=$PATH:~/bin
+mkdir -p ~/bin
+wget https://raw.github.com/junegunn/fzf/master/fzf -O ~/bin/fzf
+chmod +x ~/bin/fzf
 ```
 
 ### Install as Ruby gem
@@ -215,7 +217,7 @@ zsh widgets
 -----------
 
 ```sh
-# CTRL-T - Paste the selected file(s) path into the command line
+# CTRL-T - Paste the selected file path(s) into the command line
 fzf-file-widget() {
   local FILES
   local IFS="
@@ -250,6 +252,36 @@ zle     -N   fzf-history-widget
 bindkey '^R' fzf-history-widget
 ```
 
+Auto-completion (experimental)
+------------------------------
+
+Disclaimer: *Auto-completion feature is currently experimental, it can change
+over time*
+
+### bash
+
+fuzzy-finder-completion can be triggered if you type in a directory name
+followed by the trigger sequence which is by default `**`.
+
+```sh
+vim **<TAB>
+vim ..**<TAB>
+vim ~/**<TAB>
+
+cd **<TAB>
+cd ../<TAB>
+```
+
+You can use different trigger sequence by setting `FZF_COMPLETION_TRIGGER`
+
+```sh
+export FZF_COMPLETION_TRIGGER='~~'
+```
+
+### zsh
+
+TODO
+
 Tips
 ----
 
@@ -269,6 +301,9 @@ Define fzf alias with the option as follows:
 alias fzf='ruby --disable-gems ~/bin/fzf'
 ```
 
+This is automatically set up in your .bashrc and .zshrc if you use the bundled
+[install](https://github.com/junegunn/fzf/blob/master/install) script.
+
 ### Incorrect display on Ruby 1.8
 
 It is reported that the output of fzf can become unreadable on some terminals

fzf-completion.bash

+#!/bin/bash
+#     ____      ____
+#    / __/___  / __/
+#   / /_/_  / / /_
+#  / __/ / /_/ __/
+# /_/   /___/_/-completion.bash
+#
+# - $FZF_COMPLETION_TRIGGER (default '**')
+# - $FZF_COMPLETION_OPTS
+
+_fzf_opts_completion() {
+  local cur prev opts
+  COMPREPLY=()
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  prev="${COMP_WORDS[COMP_CWORD-1]}"
+  opts="-m --multi -x --extended -s --sort +s +i +c --no-color"
+
+  case "${prev}" in
+  --sort|-s)
+    COMPREPLY=( $(compgen -W "$(seq 2000 1000 10000)" -- ${cur}) )
+    return 0
+    ;;
+  esac
+
+  if [[ ${cur} =~ ^-|\+ ]]; then
+    COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+    return 0
+  fi
+
+  return 0
+}
+
+_fzf_generic_completion() {
+  local cur prev opts base matches ignore
+  COMPREPLY=()
+  FZF_COMPLETION_TRIGGER=${FZF_COMPLETION_TRIGGER:-**}
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  prev="${COMP_WORDS[COMP_CWORD-1]}"
+  if [[ ${cur} == *"$FZF_COMPLETION_TRIGGER" ]]; then
+    base=${cur:0:${#cur}-${#FZF_COMPLETION_TRIGGER}}
+    base=${base%/}
+    eval base=$base
+
+    ignore=${FZF_COMPLETION_IGNORE:-*/.git/*}
+    find_opts="-name .git -prune -o -name .svn -prune -o"
+    if [ -z "$base" -o -d "$base" ]; then
+      matches=$(find ${base:-*} $1 2> /dev/null | fzf $FZF_COMPLETION_OPTS $2 | while read item; do
+        if [[ ${item} =~ \  ]]; then
+          echo -n "\"$item\" "
+        else
+          echo -n "$item "
+        fi
+      done)
+      matches=${matches% }
+      if [ -n "$matches" ]; then
+        COMPREPLY=( "$matches" )
+        return 0
+      fi
+    fi
+  fi
+}
+
+_fzf_all_completion() {
+  _fzf_generic_completion \
+    "-name .git -prune -o -name .svn -prune -o -type f -print -o -type l -print" \
+    "-m"
+}
+
+_fzf_dir_completion() {
+  _fzf_generic_completion \
+    "-name .git -prune -o -name .svn -prune -o -type d -print" \
+    ""
+}
+
+complete -F _fzf_opts_completion fzf
+
+for cmd in "cd pushd rmdir"; do
+  complete -F _fzf_dir_completion -o default $cmd
+done
+
+FZF_COMPLETION_COMMANDS=${FZF_COMPLETION_COMMANDS:-
+  awk basename bunzip2 bzip2 curl diff diff3 dirname du emacs ex file find ftp
+  g++ gcc git grep gunzip gvim gzip head hg jar java javac jps ld less ls more
+  mvim open patch perl python rsync ruby scp sed sftp sort svn tail tar tee
+  uniq unzip vi view vim wc zip
+}
+
+for cmd in $FZF_COMPLETION_COMMANDS; do
+  complete -F _fzf_all_completion -o default $cmd
+done
+
+bind '"\e\e": complete'
+bind '"\er": redraw-current-line'
+bind '"\C-i": "\e\e\er"'
+

fzf-completion.zsh

+#!/bin/zsh
+#     ____      ____
+#    / __/___  / __/
+#   / /_/_  / / /_
+#  / __/ / /_/ __/
+# /_/   /___/_/-completion.zsh
+#
+
+# TODO

install

 #!/bin/bash
 
 cd `dirname $BASH_SOURCE`
-mkdir -p ~/bin
-ln -sf `pwd`/fzf ~/bin/fzf
-chmod +x ~/bin/fzf
+FZF_BASE=`pwd`
+
+# ruby executable
+echo -n "Checking Ruby executable ... "
+RUBY=`which ruby`
+if [ $? -ne 0 ]; then
+  echo "ruby executable not found!"
+  exit 1
+fi
+echo "OK"
+
+# Curses-support
+echo -n "Checking Curses support ... "
+/usr/bin/env ruby -e "begin; require 'curses'; rescue Exception; exit 1; end"
+if [ $? -ne 0 ]; then
+  echo "Your ruby does not support 'curses'"
+  exit 1
+fi
+echo "OK"
+
+# Ruby version
+echo -n "Checking Ruby version ... "
+/usr/bin/env ruby -e 'exit RUBY_VERSION >= "1.9"'
+if [ $? -eq 0 ]; then
+  echo ">= 1.9"
+  FZF_ALIAS="alias fzf='$RUBY --disable-gems $FZF_BASE/fzf'"
+else
+  echo "< 1.9"
+  FZF_ALIAS="alias fzf='$RUBY $FZF_BASE/fzf' # fzf"
+fi
+
+# Auto-completion
+read -p "Do you want to add auto-completion support? (y/n) " -n 1 -r
+echo
+[[ ! $REPLY =~ ^[Nn]$ ]]
+AUTO_COMPLETION=$?
+
+echo
+for shell in bash zsh; do
+  rc=~/.${shell}rc
+  echo "Update $rc:"
+
+  # Install fzf alias
+  echo "- Add fzf alias:"
+  echo "  - $FZF_ALIAS"
+  if [ $(grep "alias fzf=" $rc | wc -l) -gt 0 ]; then
+    echo "    - (X) fzf alias already exists"
+  else
+    echo $FZF_ALIAS >> $rc
+    echo "    - Added."
+  fi
+
+  # Install auto-completion support
+  if [ $AUTO_COMPLETION -eq 0 ]; then
+    FZF_COMPLETION="source $FZF_BASE/fzf-completion.${shell}"
+    echo "- Add auto-completion support"
+    echo "  - $FZF_COMPLETION"
+    if [ $(grep "source.*fzf-completion" $rc | wc -l) -gt 0 ]; then
+      echo "    - (X) fzf-completion.${shell} already being sourced"
+    else
+      echo $FZF_COMPLETION >> $rc
+      echo "    - Added."
+    fi
+  fi
+  echo
+done
+
+echo "Finished. Remove the added lines to uninstall fzf."