Implement bash auto-completion with fzf

fzf-completion.bash

@@ -0,0 +1,95 @@
+#!/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"'
+