Add --reverse option (top-to-bottom layout)

`'fc' -l 1` generated an error message on bash

.gitignore

@@ -1,2 +1,3 @@
 pkg
 Gemfile.lock
+.DS_Store

README.md

@@ -16,54 +16,43 @@ fzf requires Ruby (>= 1.8.5).
 Installation
 ------------
 
-Download [fzf executable](https://raw.github.com/junegunn/fzf/master/fzf) and
+Clone this repository and run
-put it somewhere in your search $PATH.
-
-```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
 [install](https://github.com/junegunn/fzf/blob/master/install) script.
 
 ```sh
-git clone https://github.com/junegunn/fzf.git
+git clone https://github.com/junegunn/fzf.git ~/.fzf
-fzf/install
+~/.fzf/install
 ```
 
-Make sure that ~/bin is included in $PATH.
+In case you don't have git installed:
 
 ```sh
-export PATH=$PATH:~/bin
+mkdir -p ~/.fzf
+curl -L https://github.com/junegunn/fzf/archive/master.tar.gz |
+    tar xz --strip-components 1 -C ~/.fzf
+~/.fzf/install
 ```
 
-### Install as Ruby gem
+The script will setup:
 
-fzf can be installed as a Ruby gem
+- `fzf` function (bash, zsh, fish)
+- Key bindings (`CTRL-T`, `CTRL-R`, and `ALT-C`) (bash, zsh, fish)
+- Fuzzy auto-completion (bash)
 
-```
+If you don't use any of the aforementioned shells, you have to manually place
-gem install fzf
+fzf executable in a directory included in `$PATH`. Key bindings and
-```
+auto-completion will not be available in that case.
-
-It's a bit easier to install and update the script but the Ruby gem version
-takes slightly longer to start.
 
 ### Install as Vim plugin
 
-You can use any Vim plugin manager to install fzf for Vim. If you don't use one,
+Once you have cloned the repository, add the following line to your .vimrc.
-I recommend you try [vim-plug](https://github.com/junegunn/vim-plug).
 
-1. [Install vim-plug](https://github.com/junegunn/vim-plug#usage)
+```vim
-2. Edit your .vimrc
+set rtp+=~/.fzf
+```
 
-        call plug#begin()
+Or you may use any Vim plugin manager, such as
-        Plug 'junegunn/fzf'
+[vim-plug](https://github.com/junegunn/vim-plug).
-        " ...
-        call plug#end()
-
-3. Run `:PlugInstall`
 
 Usage
 -----
@@ -71,12 +60,36 @@ Usage
 ```
 usage: fzf [options]
 
-  -m, --multi      Enable multi-select
+  Search
-  -x, --extended   Extended-search mode
+    -x, --extended       Extended-search mode
-  -s, --sort=MAX   Maximum number of matched items to sort. Default: 1000
+    -e, --extended-exact Extended-search mode (exact match)
-  +s, --no-sort    Do not sort the result. Keep the sequence unchanged.
+    -i                   Case-insensitive match (default: smart-case match)
-  +i               Case-sensitive match
+    +i                   Case-sensitive match
-  +c, --no-color   Disable colors
+    -n, --nth=[-]N[,..]  Comma-separated list of field indexes for limiting
+                         search scope (positive or negative integers)
+    -d, --delimiter=STR  Field delimiter regex for --nth (default: AWK-style)
+
+  Search result
+    -s, --sort=MAX       Maximum number of matched items to sort (default: 1000)
+    +s, --no-sort        Do not sort the result. Keep the sequence unchanged.
+
+  Interface
+    -m, --multi          Enable multi-select with tab/shift-tab
+        --no-mouse       Disable mouse
+    +c, --no-color       Disable colors
+    +2, --no-256         Disable 256-color
+        --black          Use black background
+        --reverse        Reverse orientation
+
+  Scripting
+    -q, --query=STR      Start the finder with the given query
+    -1, --select-1       Automatically select the only match
+    -0, --exit-0         Exit immediately when there's no match
+    -f, --filter=STR     Filter mode. Do not start interactive finder.
+
+  Environment variables
+    FZF_DEFAULT_COMMAND  Default command to use when input is tty
+    FZF_DEFAULT_OPTS     Defaults options. (e.g. "-x -m --sort 10000")
 ```
 
 fzf will launch curses-based finder, read the list from STDIN, and write the
@@ -101,21 +114,25 @@ If you want to preserve the exact sequence of the input, provide `--no-sort` (or
 history | fzf +s
 ```
 
-### Key binding
+### Keys
 
 Use CTRL-J and CTRL-K (or CTRL-N and CTRL-P) to change the selection, press
-enter key to select the item. CTRL-C will terminate the finder.
+enter key to select the item. CTRL-C, CTRL-G, or ESC will terminate the finder.
 
 The following readline key bindings should also work as expected.
 
 - CTRL-A / CTRL-E
 - CTRL-B / CTRL-F
-- CTRL-W / CTRL-U
+- CTRL-W / CTRL-U / CTRL-Y
 - ALT-B / ALT-F
 
 If you enable multi-select mode with `-m` option, you can select multiple items
 with TAB or Shift-TAB key.
 
+You can also use mouse. Double-click on an item to select it or shift-click (or
+ctrl-click) to select multiple items. Use mouse wheel to move the cursor up and
+down.
+
 ### Extended-search mode
 
 With `-x` or `--extended` option, fzf will start in "extended-search mode".
@@ -132,60 +149,39 @@ such as: `^music .mp3$ sbtrkt !rmx`
 | `'wild`  | Items that include `wild`        | exact-match (quoted) |
 | `!'fire` | Items that do not include `fire` | inverse-exact-match  |
 
-Usage as Vim plugin
+If you don't need fuzzy matching and do not wish to "quote" every word, start
--------------------
+fzf with `-e` or `--extended-exact` option.
 
-If you install fzf as a Vim plugin, `:FZF` command will be added.
+Useful examples
-
+---------------
-```vim
-:FZF
-:FZF --no-sort -m
-```
-
-You can override the source command which produces input to fzf.
-
-```vim
-let g:fzf_source = 'find . -type f'
-```
-
-And you can predefine default options to fzf command.
-
-```vim
-let g:fzf_options = '--no-color --extended'
-```
-
-For more advanced uses, you can call `fzf#run` function as follows.
-
-```vim
-:call fzf#run('tabedit', '-m +c')
-```
-
-Most of the time, you will prefer native Vim plugins with better integration
-with Vim. The only reason one might consider using fzf in Vim is its speed. For
-a very large list of files, fzf is significantly faster and it does not block.
-
-Useful bash examples
---------------------
 
 ```sh
-# vimf - Open selected file in Vim
+# fe [FUZZY PATTERN] - Open the selected file with the default editor
-vimf() {
+#   - Bypass fuzzy finder if there's only one match (--select-1)
-  FILE=$(fzf) && vim "$FILE"
+#   - Exit if there's no match (--exit-0)
+fe() {
+  local file
+  file=$(fzf --query="$1" --select-1 --exit-0)
+  [ -n "$file" ] && ${EDITOR:-vim} "$file"
 }
 
 # fd - cd to selected directory
 fd() {
-  DIR=$(find ${1:-*} -path '*/\.*' -prune -o -type d -print 2> /dev/null | fzf) && cd "$DIR"
+  local dir
+  dir=$(find ${1:-*} -path '*/\.*' -prune \
+                  -o -type d -print 2> /dev/null | fzf +m) &&
+  cd "$dir"
 }
 
 # fda - including hidden directories
 fda() {
-  DIR=$(find ${1:-*} -type d 2> /dev/null | fzf) && cd "$DIR"
+  local dir
+  dir=$(find ${1:-.} -type d 2> /dev/null | fzf +m) && cd "$dir"
 }
 
 # fh - repeat history
 fh() {
-  eval $(history | fzf +s | sed 's/ *[0-9]* *//')
+  eval $(([ -n "$ZSH_NAME" ] && fc -l 1 || history) | fzf +s | sed 's/ *[0-9]* *//')
 }
 
 # fkill - kill process
@@ -193,80 +189,333 @@ fkill() {
   ps -ef | sed 1d | fzf -m | awk '{print $2}' | xargs kill -${1:-9}
 }
 
-# (Assuming you don't use the default CTRL-T and CTRL-R)
+# fbr - checkout git branch
+fbr() {
+  local branches branch
+  branches=$(git branch) &&
+  branch=$(echo "$branches" | fzf +s +m) &&
+  git checkout $(echo "$branch" | sed "s/.* //")
+}
 
-# CTRL-T - Paste the selected file path into the command line
+# fco - checkout git commit
-bind '"\er": redraw-current-line'
+fco() {
-bind '"\C-t": " \C-u \C-a\C-k$(fzf)\e\C-e\C-y\C-a\C-y\ey\C-h\C-e\er"'
+  local commits commit
+  commits=$(git log --pretty=oneline --abbrev-commit --reverse) &&
+  commit=$(echo "$commits" | fzf +s +m -e) &&
+  git checkout $(echo "$commit" | sed "s/ .*//")
+}
 
-# CTRL-R - Paste the selected command from history into the command line
+# ftags - search ctags
-bind '"\C-r": " \C-e\C-u$(history | fzf +s | sed \"s/ *[0-9]* *//\")\e\C-e\er"'
+ftags() {
+  local line
+  [ -e tags ] &&
+  line=$(
+    awk 'BEGIN { FS="\t" } !/^!/ {print toupper($4)"\t"$1"\t"$2"\t"$3}' tags |
+    cut -c1-80 | fzf --nth=1,2
+  ) && $EDITOR $(cut -f3 <<< "$line") -c "set nocst" \
+                                      -c "silent tag $(cut -f2 <<< "$line")"
+}
 ```
 
-zsh widgets
+For more examples, see [the wiki
------------
+page](https://github.com/junegunn/fzf/wiki/examples).
+
+Key bindings for command line
+-----------------------------
+
+The install script will setup the following key bindings for bash, zsh, and
+fish.
+
+- `CTRL-T` - Paste the selected file path(s) into the command line
+- `CTRL-R` - Paste the selected command from history into the command line
+- `ALT-C` - cd into the selected directory
+
+If you're on a tmux session, `CTRL-T` will launch fzf in a new split-window. You
+may disable this tmux integration by setting `FZF_TMUX` to 0, or change the
+height of the window with `FZF_TMUX_HEIGHT` (e.g. `20`, `50%`).
+
+If you use vi mode on bash, you need to add `set -o vi` *before* `source
+~/.fzf.bash` in your .bashrc, so that it correctly sets up key bindings for vi
+mode.
+
+If you want to customize the key bindings, consider editing the
+installer-generated source code: `~/.fzf.bash`, `~/.fzf.zsh`, and
+`~/.config/fish/functions/fzf_key_bindings.fish`.
+
+Auto-completion
+---------------
+
+Disclaimer: *Auto-completion feature is currently experimental, it can change
+over time*
+
+### bash
+
+#### Files and directories
+
+Fuzzy completion for files and directories can be triggered if the word before
+the cursor ends with the trigger sequence which is by default `**`.
+
+- `COMMAND [DIRECTORY/][FUZZY_PATTERN]**<TAB>`
 
 ```sh
-# CTRL-T - Paste the selected file(s) path into the command line
+# Files under current directory
-fzf-file-widget() {
+# - You can select multiple items with TAB key
-  local FILES
+vim **<TAB>
-  local IFS="
-"
-  FILES=($(
-    find * -path '*/\.*' -prune \
-    -o -type f -print \
-    -o -type l -print 2> /dev/null | fzf -m))
-  unset IFS
-  FILES=$FILES:q
-  LBUFFER="${LBUFFER%% #} $FILES"
-  zle redisplay
-}
-zle     -N   fzf-file-widget
-bindkey '^T' fzf-file-widget
 
-# ALT-C - cd into the selected directory
+# Files under parent directory
-fzf-cd-widget() {
+vim ../**<TAB>
-  cd "${$(find * -path '*/\.*' -prune \
-          -o -type d -print 2> /dev/null | fzf):-.}"
-  zle reset-prompt
-}
-zle     -N    fzf-cd-widget
-bindkey '\ec' fzf-cd-widget
 
-# CTRL-R - Paste the selected command from history into the command line
+# Files under parent directory that match `fzf`
-fzf-history-widget() {
+vim ../fzf**<TAB>
-  LBUFFER=$(history | fzf +s | sed "s/ *[0-9]* *//")
+
-  zle redisplay
+# Files under your home directory
-}
+vim ~/**<TAB>
-zle     -N   fzf-history-widget
+
-bindkey '^R' fzf-history-widget
+
+# Directories under current directory (single-selection)
+cd **<TAB>
+
+# Directories under ~/github that match `fzf`
+cd ~/github/fzf**<TAB>
 ```
 
+#### Process IDs
+
+Fuzzy completion for PIDs is provided for kill command. In this case
+there is no trigger sequence, just press tab key after kill command.
+
+```sh
+# Can select multiple processes with <TAB> or <Shift-TAB> keys
+kill -9 <TAB>
+```
+
+#### Host names
+
+For ssh and telnet commands, fuzzy completion for host names is provided. The
+names are extracted from /etc/hosts and ~/.ssh/config.
+
+```sh
+ssh **<TAB>
+telnet **<TAB>
+```
+
+#### Settings
+
+```sh
+# Use ~~ as the trigger sequence instead of the default **
+export FZF_COMPLETION_TRIGGER='~~'
+
+# Options to fzf command
+export FZF_COMPLETION_OPTS='+c -x'
+```
+
+### zsh
+
+TODO :smiley:
+
+(Pull requests are appreciated.)
+
+Usage as Vim plugin
+-------------------
+
+(fzf is a command-line utility, naturally it is only accessible in terminal Vim)
+
+### `:FZF[!]`
+
+If you have set up fzf for Vim, `:FZF` command will be added.
+
+```vim
+" Look for files under current directory
+:FZF
+
+" Look for files under your home directory
+:FZF ~
+
+" With options
+:FZF --no-sort -m /tmp
+```
+
+Note that the environment variables `FZF_DEFAULT_COMMAND` and `FZF_DEFAULT_OPTS`
+also apply here.
+
+If you're on a tmux session, `:FZF` will launch fzf in a new split-window whose
+height can be adjusted with `g:fzf_tmux_height` (default: '40%'). However, the
+bang version (`:FZF!`) will always start in fullscreen.
+
+### `fzf#run([options])`
+
+For more advanced uses, you can call `fzf#run()` function which returns the list
+of the selected items.
+
+`fzf#run()` may take an options-dictionary:
+
+| Option name   | Type          | Description                                                        |
+| ------------- | ------------- | ------------------------------------------------------------------ |
+| `source`      | string        | External command to generate input to fzf (e.g. `find .`)          |
+| `source`      | list          | Vim list as input to fzf                                           |
+| `sink`        | string        | Vim command to handle the selected item (e.g. `e`, `tabe`)         |
+| `sink`        | funcref       | Reference to function to process each selected item                |
+| `options`     | string        | Options to fzf                                                     |
+| `dir`         | string        | Working directory                                                  |
+| `tmux_width`  | number/string | Use tmux vertical split with the given height (e.g. `20`, `50%`)   |
+| `tmux_height` | number/string | Use tmux horizontal split with the given height (e.g. `20`, `50%`) |
+
+#### Examples
+
+If `sink` option is not given, `fzf#run` will simply return the list.
+
+```vim
+let items = fzf#run({ 'options': '-m +c', 'dir': '~', 'source': 'ls' })
+```
+
+But if `sink` is given as a string, the command will be executed for each
+selected item.
+
+```vim
+" Each selected item will be opened in a new tab
+let items = fzf#run({ 'sink': 'tabe', 'options': '-m +c', 'dir': '~', 'source': 'ls' })
+```
+
+We can also use a Vim list as the source as follows:
+
+```vim
+" Choose a color scheme with fzf
+nnoremap <silent> <Leader>C :call fzf#run({
+\   'source':
+\     map(split(globpath(&rtp, "colors/*.vim"), "\n"),
+\         "substitute(fnamemodify(v:val, ':t'), '\\..\\{-}$', '', '')"),
+\   'sink':       'colo',
+\   'options':    '+m',
+\   'tmux_width': 20
+\ })<CR>
+```
+
+`sink` option can be a function reference. The following example creates a
+handy mapping that selects an open buffer.
+
+```vim
+" List of buffers
+function! g:buflist()
+  redir => ls
+  silent ls
+  redir END
+  return split(ls, '\n')
+endfunction
+
+function! g:bufopen(e)
+  execute 'buffer '. matchstr(a:e, '^[ 0-9]*')
+endfunction
+
+nnoremap <silent> <Leader><Enter> :call fzf#run({
+\   'source':      reverse(g:buflist()),
+\   'sink':        function('g:bufopen'),
+\   'options':     '+m',
+\   'tmux_height': '40%'
+\ })<CR>
+```
+
+### Articles
+
+- [fzf+vim+tmux](http://junegunn.kr/2014/04/fzf+vim+tmux)
+
 Tips
 ----
 
-### Faster startup with `--disable-gems` options
+### Rendering issues
 
-If you're running Ruby 1.9 or above, you can improve the startup time with
+If you have any rendering issues, check the followings:
-`--disable-gems` option to Ruby.
 
-- `time ruby ~/bin/fzf -h`
+1. Make sure `$TERM` is correctly set. fzf will use 256-color only if it
-    - 0.077 sec
+  contains `256` (e.g. `xterm-256color`)
-- `time ruby --disable-gems ~/bin/fzf -h`
+2. If you're on screen or tmux, `$TERM` should be either `screen` or
-    - 0.025 sec
+  `screen-256color`
+3. Some terminal emulators (e.g. mintty) have problem displaying default
+  background color and make some text unable to read. In that case, try `--black`
+  option. And if it solves your problem, I recommend including it in
+  `FZF_DEFAULT_OPTS` for further convenience.
+4. If you still have problem, try `--no-256` option or even `--no-color`.
+5. Ruby 1.9 or above is required for correctly displaying unicode characters.
 
-Define fzf alias with the option as follows:
+### Ranking algorithm
+
+fzf sorts the result first by the length of the matched substring, then by the
+length of the whole string. However it only does so when the number of matches
+is less than the limit which is by default 1000, in order to avoid the cost of
+sorting a large list and limit the response time of the query.
+
+This limit can be adjusted with `-s` option, or with the environment variable
+`FZF_DEFAULT_OPTS`.
 
 ```sh
-alias fzf='ruby --disable-gems ~/bin/fzf'
+export FZF_DEFAULT_OPTS="--sort 20000"
 ```
 
-### Incorrect display on Ruby 1.8
+### Respecting `.gitignore`, `.hgignore`, and `svn:ignore`
+
+[ag](https://github.com/ggreer/the_silver_searcher) or
+[pt](https://github.com/monochromegane/the_platinum_searcher) will do the
+filtering:
+
+```sh
+# Feed the output of ag into fzf
+ag -l -g "" | fzf
+
+# Setting ag as the default source for fzf
+export FZF_DEFAULT_COMMAND='ag -l -g ""'
+
+# Now fzf (w/o pipe) will use ag instead of find
+fzf
+```
+
+### `git ls-tree` for fast traversal
+
+If you're running fzf in a large git repository, `git ls-tree` can boost up the
+speed of the traversal.
+
+```sh
+# Copy the original fzf function to __fzf
+declare -f __fzf > /dev/null ||
+  eval "$(echo "__fzf() {"; declare -f fzf | grep -v '^{' | tail -n +2)"
+
+# Use git ls-tree when possible
+fzf() {
+  if [ -n "$(git rev-parse HEAD 2> /dev/null)" ]; then
+    FZF_DEFAULT_COMMAND="git ls-tree -r --name-only HEAD" __fzf "$@"
+  else
+    __fzf "$@"
+  fi
+}
+```
+
+### Fish shell
+
+It's [a known bug of fish](https://github.com/fish-shell/fish-shell/issues/1362)
+that it doesn't allow reading from STDIN in command substitution, which means
+simple `vim (fzf)` won't work as expected. The workaround is to store the result
+of fzf to a temporary file.
+
+```sh
+function vimf
+  if fzf > $TMPDIR/fzf.result
+    vim (cat $TMPDIR/fzf.result)
+  end
+end
+
+function fe
+  set tmp $TMPDIR/fzf.result
+  fzf --query="$argv[1]" --select-1 --exit-0 > $tmp
+  if [ (cat $tmp | wc -l) -gt 0 ]
+    vim (cat $tmp)
+  end
+end
+```
+
+### Windows
+
+fzf works on [Cygwin](http://www.cygwin.com/) and
+[MSYS2](http://sourceforge.net/projects/msys2/). You may need to use `--black`
+option on MSYS2 to avoid rendering issues.
 
-It is reported that the output of fzf can become unreadable on some terminals
-when it's running on Ruby 1.8. If you experience the problem, upgrade your Ruby
-to 1.9 or above. Ruby 1.9 or above is also required for displaying Unicode
-characters.
 
 License
 -------

ext/mkrf_conf.rb

@@ -0,0 +1,9 @@
+require 'rubygems/dependency_installer'
+
+if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.1.0')
+  Gem::DependencyInstaller.new.install 'curses', '~> 1.0'
+end
+
+File.open(File.expand_path('../Rakefile', __FILE__), 'w') do |f|
+  f.puts 'task :default'
+end

fzf

@@ -7,12 +7,13 @@
 #  / __/ / /_/ __/
 # /_/   /___/_/    Fuzzy finder for your shell
 #
-# URL:         https://github.com/junegunn/fzf
+# Version: 0.8.4 (May 17, 2014)
-# Author:      Junegunn Choi
-# License:     MIT
-# Last update: November 17, 2013
 #
-# Copyright (c) 2013 Junegunn Choi
+# Author:  Junegunn Choi
+# URL:     https://github.com/junegunn/fzf
+# License: MIT
+#
+# Copyright (c) 2014 Junegunn Choi
 #
 # MIT License
 #
@@ -39,9 +40,18 @@ require 'thread'
 require 'curses'
 require 'set'
 
+unless String.method_defined? :force_encoding
+  class String
+    def force_encoding *arg
+      self
+    end
+  end
+end
+
 class FZF
   C = Curses
-  attr_reader :rxflag, :sort, :color, :multi
+  attr_reader :rxflag, :sort, :nth, :color, :black, :ansi256, :reverse,
+              :mouse, :multi, :query, :select1, :exit0, :filter, :extended
 
   class AtomicVar
     def initialize value
@@ -54,10 +64,8 @@ class FZF
     end
 
     def set value = nil
-      if block_given?
+      @mutex.synchronize do
-        @mutex.synchronize { @value = yield @value }
+        @value = block_given? ? yield(@value) : value
-      else
-        @mutex.synchronize { @value = value }
       end
     end
 
@@ -67,59 +75,237 @@ class FZF
   end
 
   def initialize argv, source = $stdin
-    usage 0 unless (%w[--help -h] & argv).empty?
+    @rxflag   = nil
-    @rxflag = argv.delete('+i') ? 0 : Regexp::IGNORECASE
+    @sort     = ENV.fetch('FZF_DEFAULT_SORT', 1000).to_i
-    @sort   = %w[+s --no-sort].map   { |e| argv.delete e }.compact.empty? ?
+    @color    = true
-      ENV.fetch('FZF_DEFAULT_SORT', 1000).to_i : nil
+    @ansi256  = true
-    @color  = %w[+c --no-color].map  { |e| argv.delete e }.compact.empty?
+    @black    = false
-    @multi  = !%w[-m --multi].map    { |e| argv.delete e }.compact.empty?
+    @multi    = false
-    @xmode  = !%w[-x --extended].map { |e| argv.delete e }.compact.empty?
+    @mouse    = true
-    rest    = argv.join ' '
+    @extended = nil
-    if sort = rest.match(/(-s|--sort=?) ?([0-9]+)/)
+    @select1  = false
-      usage 1 unless @sort
+    @exit0    = false
-      @sort = sort[2].to_i
+    @filter   = nil
-      rest  = rest.delete sort[0]
+    @nth      = nil
-    end
+    @delim    = nil
-    usage 1 unless rest.empty?
+    @reverse  = false
 
-    @source   = source
+    argv =
+      if opts = ENV['FZF_DEFAULT_OPTS']
+        require 'shellwords'
+        Shellwords.shellwords(opts) + argv
+      else
+        argv.dup
+      end
+    while o = argv.shift
+      case o
+      when '--version'           then FZF.version
+      when '-h', '--help'        then usage 0
+      when '-m', '--multi'       then @multi    = true
+      when '+m', '--no-multi'    then @multi    = false
+      when '-x', '--extended'    then @extended = :fuzzy
+      when '+x', '--no-extended' then @extended = nil
+      when '-i'                  then @rxflag   = Regexp::IGNORECASE
+      when '+i'                  then @rxflag   = 0
+      when '-c', '--color'       then @color    = true
+      when '+c', '--no-color'    then @color    = false
+      when '-2', '--256'         then @ansi256  = true
+      when '+2', '--no-256'      then @ansi256  = false
+      when       '--black'       then @black    = true
+      when       '--no-black'    then @black    = false
+      when       '--mouse'       then @mouse    = true
+      when       '--no-mouse'    then @mouse    = false
+      when       '--reverse'     then @reverse  = true
+      when       '--no-reverse'  then @reverse  = false
+      when '+s', '--no-sort'     then @sort     = nil
+      when '-1', '--select-1'    then @select1  = true
+      when '+1', '--no-select-1' then @select1  = false
+      when '-0', '--exit-0'      then @exit0    = true
+      when '+0', '--no-exit-0'   then @exit0    = false
+      when '-q', '--query'
+        usage 1, 'query string required' unless query = argv.shift
+        @query = AtomicVar.new query.dup
+      when /^-q(.*)$/, /^--query=(.*)$/
+        @query = AtomicVar.new($1)
+      when '-f', '--filter'
+        usage 1, 'query string required' unless query = argv.shift
+        @filter = query
+      when /^-f(.*)$/, /^--filter=(.*)$/
+        @filter = $1
+      when '-n', '--nth'
+        usage 1, 'field number required' unless nth = argv.shift
+        usage 1, 'invalid field number' if nth.to_i == 0
+        @nth = parse_nth nth
+      when /^-n([0-9,-]+)$/, /^--nth=([0-9,-]+)$/
+        @nth = parse_nth $1
+      when '-d', '--delimiter'
+        usage 1, 'delimiter required' unless delim = argv.shift
+        @delim = FZF.build_delim_regex delim
+      when /^-d(.+)$/, /^--delimiter=(.+)$/
+        @delim = FZF.build_delim_regex $1
+      when '-s', '--sort'
+        usage 1, 'sort size required' unless sort = argv.shift
+        usage 1, 'invalid sort size'  unless sort =~ /^[0-9]+$/
+        @sort = sort.to_i
+      when /^-s([0-9]+)$/, /^--sort=([0-9]+)$/
+        @sort = $1.to_i
+      when '-e', '--extended-exact'    then @extended = :exact
+      when '+e', '--no-extended-exact' then @extended = nil
+      else
+        usage 1, "illegal option: #{o}"
+      end
+    end
+
+    @source   = source.clone
     @mtx      = Mutex.new
     @cv       = ConditionVariable.new
     @events   = {}
     @new      = []
     @queue    = Queue.new
-    @cursor_x = AtomicVar.new(0)
+    @pending  = nil
-    @query    = AtomicVar.new('')
+
-    @matches  = AtomicVar.new([])
+    unless @filter
-    @count    = AtomicVar.new(0)
+      @query  ||= AtomicVar.new('')
-    @vcursor  = AtomicVar.new(0)
+      @cursor_x = AtomicVar.new(@query.length)
-    @vcursors = AtomicVar.new(Set.new)
+      @matches  = AtomicVar.new([])
-    @spinner  = AtomicVar.new('-\|/-\|/'.split(//))
+      @count    = AtomicVar.new(0)
-    @selects  = AtomicVar.new({}) # ordered >= 1.9
+      @vcursor  = AtomicVar.new(0)
-    @main     = Thread.current
+      @vcursors = AtomicVar.new(Set.new)
-    @stdout   = $stdout.clone
+      @spinner  = AtomicVar.new('-\|/-\|/'.split(//))
-    @plcount  = 0
+      @selects  = AtomicVar.new({}) # ordered >= 1.9
+      @main     = Thread.current
+      @plcount  = 0
+    end
+  end
+
+  def parse_nth nth
+    nth.split(',').map { |n|
+      ni = n.to_i
+      usage 1, "invalid field number: #{n}" if ni == 0
+      ni
+    }
+  end
+
+  def FZF.build_delim_regex delim
+    Regexp.compile(delim) rescue (delim = Regexp.escape(delim))
+    Regexp.compile "(?:.*?#{delim})|(?:.+?$)"
   end
 
   def start
-    $stdout.reopen($stderr)
+    if @filter
+      start_reader.join
+      filter_list @new
+    else
+      start_reader
+      emit(:key) { q = @query.get; [q, q.length] } unless empty = @query.empty?
+      if @select1 || @exit0
+        start_search do |loaded, matches|
+          len = empty ? @count.get : matches.length
+          if loaded
+            if @select1 && len == 1
+              puts empty ? matches.first : matches.first.first
+              exit 0
+            elsif @exit0 && len == 0
+              exit 0
+            end
+          end
 
-    init_screen
+          if loaded || len > 1
-    start_reader
+            start_renderer
-    start_renderer
+            Thread.new { start_loop }
-    start_search
+          end
-    start_loop
+        end
+
+        sleep
+      else
+        start_search
+        start_renderer
+        start_loop
+      end
+    end
   end
 
-  def usage x
+  def filter_list list
+    matches = matcher.match(list, @filter, '', '')
+    if @sort && matches.length <= @sort
+      matches = FZF.sort(matches)
+    end
+    matches.each { |m| puts m.first }
+  end
+
+  def matcher
+    @matcher ||=
+      if @extended
+        ExtendedFuzzyMatcher.new @rxflag, @extended, @nth, @delim
+      else
+        FuzzyMatcher.new @rxflag, @nth, @delim
+      end
+  end
+
+  class << self
+    def version
+      File.open(__FILE__, 'r') do |f|
+        f.each_line do |line|
+          if line =~ /Version: (.*)/
+            $stdout.puts 'fzf ' << $1
+            exit
+          end
+        end
+      end
+    end
+
+    def sort list
+      list.sort_by { |tuple| rank tuple }
+    end
+
+    def rank tuple
+      line, offsets = tuple
+      matchlen = 0
+      pe = 0
+      offsets.sort.each do |pair|
+        b, e = pair
+        b    = pe if pe > b
+        pe   = e  if e > pe
+        matchlen += e - b if e > b
+      end
+      [matchlen, line.length, line]
+    end
+  end
+
+  def usage x, message = nil
+    $stderr.puts message if message
     $stderr.puts %[usage: fzf [options]
 
-    -m, --multi      Enable multi-select
+  Search
-    -x, --extended   Extended-search mode
+    -x, --extended       Extended-search mode
-    -s, --sort=MAX   Maximum number of matched items to sort. Default: 1000
+    -e, --extended-exact Extended-search mode (exact match)
-    +s, --no-sort    Do not sort the result. Keep the sequence unchanged.
+    -i                   Case-insensitive match (default: smart-case match)
-    +i               Case-sensitive match
+    +i                   Case-sensitive match
-    +c, --no-color   Disable colors]
+    -n, --nth=[-]N[,..]  Comma-separated list of field indexes for limiting
+                         search scope (positive or negative integers)
+    -d, --delimiter=STR  Field delimiter regex for --nth (default: AWK-style)
+
+  Search result
+    -s, --sort=MAX       Maximum number of matched items to sort (default: 1000)
+    +s, --no-sort        Do not sort the result. Keep the sequence unchanged.
+
+  Interface
+    -m, --multi          Enable multi-select with tab/shift-tab
+        --no-mouse       Disable mouse
+    +c, --no-color       Disable colors
+    +2, --no-256         Disable 256-color
+        --black          Use black background
+        --reverse        Reverse orientation
+
+  Scripting
+    -q, --query=STR      Start the finder with the given query
+    -1, --select-1       Automatically select the only match
+    -0, --exit-0         Exit immediately when there's no match
+    -f, --filter=STR     Filter mode. Do not start interactive finder.
+
+  Environment variables
+    FZF_DEFAULT_COMMAND  Default command to use when input is tty
+    FZF_DEFAULT_OPTS     Defaults options. (e.g. "-x -m --sort 10000")] + $/ + $/
     exit x
   end
 
@@ -246,7 +432,11 @@ class FZF
   end
 
   def max_items; C.lines - 2; end
-  def cursor_y;  C.lines - 1; end
+
+  def cursor_y offset = 0
+    @reverse ? (offset) : (C.lines - 1 - offset)
+  end
+
   def cprint str, col
     C.attron(col) do
       addstr_safe str
@@ -266,7 +456,7 @@ class FZF
   end
 
   def print_info msg = nil
-    C.setpos cursor_y - 1, 0
+    C.setpos cursor_y(1), 0
     C.clrtoeol
     prefix =
       if spinner = @spinner.first
@@ -329,7 +519,7 @@ class FZF
       tokens << [line[b...e], true]
       index = e
     end
-    tokens << [line[index..-1], false]
+    tokens << [line[index..-1], false] if index < line.length
     tokens.reject { |pair| pair.first.empty? }
   end
 
@@ -356,25 +546,12 @@ class FZF
     C.attroff color(:chosen, true) if chosen
   end
 
-  def sort_by_rank list
+  AFTER_1_9 = RUBY_VERSION.split('.').map { |e| e.rjust(3, '0') }.join >= '001009'
-    list.sort_by { |tuple|
-      line, offsets = tuple
-      matchlen = 0
-      pe = nil
-      offsets.sort.each do |pair|
-        b, e = pair
-        b    = pe if pe && pe > b
-        pe   = e
-        matchlen += e - b
-      end
-      [matchlen, line.length, line]
-    }
-  end
 
-  if RUBY_VERSION.split('.').map { |e| e.rjust(3, '0') }.join > '001009'
+  if AFTER_1_9
     @@wrx = Regexp.new '\p{Han}|\p{Katakana}|\p{Hiragana}|\p{Hangul}'
     def width str
-      str.gsub(@@wrx, '  ').length
+      str.gsub(@@wrx, '  ').length rescue str.length
     end
 
     def trim str, len, left
@@ -415,10 +592,14 @@ class FZF
   end
 
   def init_screen
+    @stdout = $stdout.clone
+    $stdout.reopen($stderr)
+
     C.init_screen
+    C.mousemask C::ALL_MOUSE_EVENTS if @mouse
     C.start_color
     dbg =
-      if C.respond_to?(:use_default_colors)
+      if !@black && C.respond_to?(:use_default_colors)
         C.use_default_colors
         -1
       else
@@ -428,7 +609,7 @@ class FZF
     C.noecho
 
     if @color
-      if C.can_change_color?
+      if @ansi256 && ENV['TERM'].to_s =~ /256/
         C.init_pair 1, 110, dbg
         C.init_pair 2, 108, dbg
         C.init_pair 3, 254, 236
@@ -467,6 +648,8 @@ class FZF
         end | (bold ? C::A_BOLD : 0)
       end
     end
+
+    C.refresh
   end
 
   def start_reader
@@ -488,13 +671,12 @@ class FZF
         emit(:new) { @new << line.chomp }
       end
       emit(:loaded) { true }
-      @spinner.clear
+      @spinner.clear if @spinner
     end
   end
 
-  def start_search
+  def start_search &callback
-    matcher  = (@xmode ? ExtendedFuzzyMatcher : FuzzyMatcher).new @rxflag
+    Thread.new do
-    searcher = Thread.new {
       lists   = []
       events  = {}
       fcache  = {}
@@ -533,38 +715,41 @@ class FZF
           progress   = 0
           started_at = Time.now
 
-          if new_search && !lists.empty?
+          if updated = new_search && !lists.empty?
             q, cx = events.delete(:key) || [q, 0]
             empty = matcher.empty?(q)
-            matches = fcache[q] ||=
+            unless matches = fcache[q]
-              begin
+              found = []
-                found = []
+              skip  = false
-                skip  = false
+              cnt   = 0
-                cnt   = 0
+              lists.each do |list|
-                lists.each do |list|
+                cnt += list.length
-                  cnt += list.length
+                skip = @mtx.synchronize { @events[:key] }
-                  skip = @mtx.synchronize { @events[:key] }
+                break if skip
-                  break if skip
 
-                  if !empty && (progress = 100 * cnt / @count.get) < 100 && Time.now - started_at > 0.5
+                if !empty && (progress = 100 * cnt / @count.get) < 100 && Time.now - started_at > 0.5
-                    render { print_info " (#{progress}%)" }
+                  render { print_info " (#{progress}%)" }
-                  end
-
-                  found.concat(q.empty? ? list :
-                               matcher.match(list, q, q[0, cx], q[cx..-1]))
                 end
-                next if skip
-                @sort ? found : found.reverse
-              end
 
-            if !empty && @sort && matches.length <= @sort
+                found.concat(q.empty? ? list :
-              matches = sort_by_rank(matches)
+                             matcher.match(list, q, q[0, cx], q[cx..-1]))
+              end
+              next if skip
+              matches = @sort ? found : found.reverse
+              if !empty && @sort && matches.length <= @sort
+                matches = FZF.sort(matches)
+              end
+              fcache[q] = matches
             end
 
             # Atomic update
             @matches.set matches
           end#new_search
 
+          callback = nil if callback &&
+                            (updated || events[:loaded]) &&
+                            callback.call(events[:loaded], matches)
+
           # This small delay reduces the number of partial lists
           sleep((delay = [20, delay + 5].min) * 0.01) unless user_input
 
@@ -573,7 +758,7 @@ class FZF
       rescue Exception => e
         @main.raise e
       end
-    }
+    end
   end
 
   def pick
@@ -589,7 +774,7 @@ class FZF
       # Wipe
       if items.length < @plcount
         @plcount.downto(items.length) do |idx|
-          C.setpos cursor_y - idx - 2, 0
+          C.setpos cursor_y(idx + 2), 0
           C.clrtoeol
         end
       end
@@ -604,7 +789,7 @@ class FZF
       }
       items.each_with_index do |item, idx|
         next unless wipe || cleanse.include?(idx)
-        row           = cursor_y - idx - 2
+        row           = cursor_y(idx + 2)
         chosen        = idx == vcursor
         selected      = @selects.include?([*item][0])
         line, offsets = convert_item item
@@ -612,10 +797,13 @@ class FZF
         print_item row, tokens, chosen, selected
       end
       print_info
+      print_input
     end
   end
 
   def start_renderer
+    init_screen
+
     Thread.new do
       begin
         while blk = @queue.shift
@@ -633,97 +821,278 @@ class FZF
     nil
   end
 
+  def vselect &prc
+    @vcursor.set { |v| @vcursors << v; prc.call v }
+    update_list false
+  end
+
+  def num_unicode_bytes chr
+    # http://en.wikipedia.org/wiki/UTF-8
+    if chr & 0b10000000 > 0
+      bytes = 0
+      7.downto(2) do |shift|
+        break if (chr >> shift) & 0x1 == 0
+        bytes += 1
+      end
+      bytes
+    else
+      1
+    end
+  end
+
+  def read_nb chars = 1, default = nil, tries = 10
+    tries.times do |_|
+      begin
+        return @tty.read_nonblock(chars).ord
+      rescue Exception
+        sleep 0.01
+      end
+    end
+    default
+  end
+
+  def read_nbs
+    ords = []
+    while ord = read_nb
+      ords << ord
+    end
+    ords
+  end
+
+  def get_mouse
+    case ord = read_nb
+    when 32, 36, 40, 48, # mouse-down / shift / cmd / ctrl
+         35, 39, 43, 51  # mouse-up / shift / cmd / ctrl
+      x = read_nb - 33
+      y = read_nb - 33
+      { :event => (ord % 2 == 0 ? :click : :release),
+        :x => x, :y => y, :shift => ord >= 36 }
+    when 96, 100, 104, 112, # scroll-up / shift / cmd / ctrl
+         97, 101, 105, 113  # scroll-down / shift / cmd / ctrl
+      read_nb(2)
+      { :event => :scroll, :diff => (ord % 2 == 0 ? -1 : 1), :shift => ord >= 100 }
+    else
+      # e.g. 40, 43, 104, 105
+      read_nb(2)
+      nil
+    end
+  end
+
+  def get_input actions
+    @tty ||= IO.open(IO.sysopen('/dev/tty'), 'r')
+
+    if pending = @pending
+      @pending = nil
+      return pending
+    end
+
+    str = ''
+    while true
+      ord =
+        if str.empty?
+          @tty.getc.ord
+        else
+          begin
+            ord = @tty.read_nonblock(1).ord
+            if (nb = num_unicode_bytes(ord)) > 1
+              ords = [ord]
+              (nb - 1).times do |_|
+                ords << @tty.read_nonblock(1).ord
+              end
+              # UTF-8 TODO Ruby 1.8
+              ords.pack('C*').force_encoding('UTF-8')
+            else
+              ord
+            end
+          rescue Exception
+            return str
+          end
+        end
+
+      ord =
+        case read_nb(1, :esc)
+        when 91
+          case read_nb(1, nil)
+          when 68 then ctrl(:b)
+          when 67 then ctrl(:f)
+          when 66 then ctrl(:j)
+          when 65 then ctrl(:k)
+          when 90 then :stab
+          when 50 then read_nb; :ins
+          when 51 then read_nb; :del
+          when 53 then read_nb; :pgup
+          when 54 then read_nb; :pgdn
+          when 49
+            case read_nbs
+            when [59, 50, 68] then ctrl(:a)
+            when [59, 50, 67] then ctrl(:e)
+            when [126]        then ctrl(:a)
+            end
+          when 52 then read_nb; ctrl(:e)
+          when 72 then ctrl(:a)
+          when 70 then ctrl(:e)
+          when 77
+            get_mouse
+          end
+        when 'b',  98 then :alt_b
+        when 'f', 102 then :alt_f
+        when :esc     then :esc
+        else          next
+        end if ord == 27
+
+      return ord if ord.nil? || ord.is_a?(Hash)
+
+      if actions.has_key?(ord)
+        if str.empty?
+          return ord
+        else
+          @pending = ord
+          return str
+        end
+      else
+        unless ord.is_a? String
+          ord = [ord].pack('U*')
+        end
+        str << ord if ord =~ /[[:print:]]/
+      end
+    end
+  end
+
+  class MouseEvent
+    DOUBLE_CLICK_INTERVAL = 0.5
+
+    attr_reader :v
+
+    def initialize v = nil
+      @c = 0
+      @v = v
+      @t = Time.at 0
+    end
+
+    def v= v
+      @c = (@v == v && within?) ? @c + 1 : 0
+      @v = v
+      @t = Time.now
+    end
+
+    def double? v
+      @c == 1 && @v == v && within?
+    end
+
+    def within?
+      (Time.now - @t) < DOUBLE_CLICK_INTERVAL
+    end
+  end
+
   def start_loop
     got = nil
     begin
-      tty     = IO.open(IO.sysopen('/dev/tty'), 'r')
+      input = @query.get.dup
-      input   = ''
+      cursor = input.length
-      cursor  = 0
+      yanked = ''
+      mouse_event = MouseEvent.new
       backword = proc {
         cursor = (input[0, cursor].rindex(/\s\S/) || -1) + 1
       }
       actions = {
-        :nop     => proc { nil },
+        :esc     => proc { exit 1 },
-        ctrl(:c) => proc { exit 1 },
         ctrl(:d) => proc { exit 1 if input.empty? },
         ctrl(:m) => proc {
           got = pick
           exit 0
         },
-        ctrl(:u) => proc { input = input[cursor..-1]; cursor = 0 },
+        ctrl(:u) => proc {
+          yanked = input[0...cursor] if cursor > 0
+          input = input[cursor..-1]
+          cursor = 0
+        },
         ctrl(:a) => proc { cursor = 0; nil },
         ctrl(:e) => proc { cursor = input.length; nil },
-        ctrl(:j) => proc { @vcursor.set { |v| @vcursors << v; v - 1 }; update_list false },
+        ctrl(:j) => proc { vselect { |v| v - (@reverse ? -1 : 1) } },
-        ctrl(:k) => proc { @vcursor.set { |v| @vcursors << v; v + 1 }; update_list false },
+        ctrl(:k) => proc { vselect { |v| v + (@reverse ? -1 : 1) } },
         ctrl(:w) => proc {
           pcursor = cursor
           backword.call
+          yanked = input[cursor...pcursor] if pcursor > cursor
           input = input[0...cursor] + input[pcursor..-1]
         },
-        127 => proc { input[cursor -= 1] = '' if cursor > 0 },
+        ctrl(:y) => proc { actions[:default].call yanked },
-        9   => proc { |o|
+        ctrl(:h) => proc { input[cursor -= 1] = '' if cursor > 0 },
+        ctrl(:i) => proc { |o|
           if @multi && sel = pick
             if @selects.has_key? sel
               @selects.delete sel
             else
               @selects[sel] = 1
             end
-            @vcursor.set { |v|
+            vselect { |v| v + case o
-              @vcursors << v
+                              when :stab then 1
-              v + (o == :stab ? 1 : -1)
+                              when :sclick then 0
-            }
+                              else -1
-            update_list false
+                              end * (@reverse ? -1 : 1) }
           end
         },
-        :left  => proc { cursor = [0, cursor - 1].max; nil },
+        ctrl(:b) => proc { cursor = [0, cursor - 1].max; nil },
-        :right => proc { cursor = [input.length, cursor + 1].min; nil },
+        ctrl(:f) => proc { cursor = [input.length, cursor + 1].min; nil },
+        ctrl(:l) => proc { render { C.clear; C.refresh }; update_list true },
+        :del   => proc { input[cursor] = '' if input.length > cursor },
+        :pgup  => proc { vselect { |_| max_items } },
+        :pgdn  => proc { vselect { |_| 0 } },
         :alt_b => proc { backword.call; nil },
         :alt_f => proc {
           cursor += (input[cursor..-1].index(/(\S\s)|(.$)/) || -1) + 1
           nil
         },
+        :default => proc { |val|
+          case val
+          when String
+            input.insert cursor, val
+            cursor += val.length
+          when Hash
+            event = val[:event]
+            case event
+            when :click, :release
+              x, y, shift = val.values_at :x, :y, :shift
+              if y == cursor_y
+                cursor = [0, [input.length, x - 2].min].max
+              elsif x > 1 && y <= max_items
+                tv = max_items - y - 1
+
+                case event
+                when :click
+                  vselect { |_| tv }
+                  actions[ctrl(:i)].call(:sclick) if shift
+                  mouse_event.v = tv
+                when :release
+                  if !shift && mouse_event.double?(tv)
+                    actions[ctrl(:m)].call
+                  end
+                end
+              end
+            when :scroll
+              diff, shift = val.values_at :diff, :shift
+              actions[ctrl(:i)].call(:sclick) if shift
+              actions[ctrl(diff > 0 ? :j : :k)].call
+            end
+          end
+        }
       }
-      actions[ctrl(:b)] = actions[:left]
-      actions[ctrl(:f)] = actions[:right]
-      actions[ctrl(:h)] = actions[127]
-      actions[ctrl(:n)] = actions[ctrl(:j)]
       actions[ctrl(:p)] = actions[ctrl(:k)]
-      actions[:stab]    = actions[9]
+      actions[ctrl(:n)] = actions[ctrl(:j)]
+      actions[:stab]    = actions[ctrl(:i)]
+      actions[127]      = actions[ctrl(:h)]
+      actions[ctrl(:q)] = actions[ctrl(:g)] = actions[ctrl(:c)] = actions[:esc]
 
       while true
         @cursor_x.set cursor
         render { print_input }
 
-        ord = tty.getc.ord
+        if key = get_input(actions)
-        ord =
+          upd = actions.fetch(key, actions[:default]).call(key)
-          case ord = tty.getc.ord
-          when 91
-            case tty.getc.ord
-            when 68 then :left
-            when 67 then :right
-            when 66 then ctrl(:j)
-            when 65 then ctrl(:k)
-            when 90 then :stab
-            else :nop
-            end
-          when 'b'.ord
-            :alt_b
-          when 'f'.ord
-            :alt_f
-          else
-            ord
-          end if ord == 27
 
-        upd = actions.fetch(ord, proc { |ord|
+          # Dispatch key event
-          char = [ord].pack('U*')
+          emit(:key) { [@query.set(input.dup), cursor] } if upd
-          if char =~ /[[:print:]]/
+        end
-            input.insert cursor, char
-            cursor += 1
-          end
-        }).call(ord)
-
-        # Dispatch key event
-        emit(:key) { [@query.set(input.dup), cursor] } if upd
       end
     ensure
       C.close_screen
@@ -739,10 +1108,58 @@ class FZF
     end
   end
 
+  class Matcher
+    class MatchData
+      def initialize n
+        @n = n
+      end
+
+      def offset _
+        @n
+      end
+    end
+
+    def initialize nth, delim
+      @nth = nth && nth.map { |n| n > 0 ? n - 1 : n }
+      @delim = delim
+      @tokens_cache = {}
+    end
+
+    def tokenize str
+      @tokens_cache[str] ||=
+        unless @delim
+          # AWK default
+          prefix_length = str[/^\s+/].length rescue 0
+          [prefix_length, (str.strip.scan(/\S+\s*/) rescue [])]
+        else
+          prefix_length = 0
+          [prefix_length, (str.scan(@delim) rescue [])]
+        end
+    end
+
+    def do_match str, pat
+      if @nth
+        prefix_length, tokens = tokenize str
+
+        @nth.each do |n|
+          if (token = tokens[n]) && (md = token.match(pat) rescue nil)
+            prefix_length += (tokens[0...n] || []).join.length
+            offset = md.offset(0).map { |o| o + prefix_length }
+            return MatchData.new(offset)
+          end
+        end
+        nil
+      else
+        str.match(pat) rescue nil
+      end
+    end
+  end
+
   class FuzzyMatcher < Matcher
     attr_reader :caches, :rxflag
 
-    def initialize rxflag
+    def initialize rxflag, nth = nil, delim = nil
+      super nth, delim
       @caches = Hash.new { |h, k| h[k] = {} }
       @regexp = {}
       @rxflag = rxflag
@@ -752,14 +1169,18 @@ class FZF
       q.empty?
     end
 
+    def rxflag_for q
+      @rxflag || (q =~ /[A-Z]/ ? 0 : Regexp::IGNORECASE)
+    end
+
     def fuzzy_regex q
       @regexp[q] ||= begin
-        q = q.downcase if @rxflag != 0
+        q = q.downcase if @rxflag == Regexp::IGNORECASE
         Regexp.new(query_chars(q).inject('') { |sum, e|
           e = Regexp.escape e
           sum << (e.length > 1 ? "(?:#{e}).*?" :  # FIXME: not equivalent
                                  "#{e}[^#{e}]*?")
-        }, @rxflag)
+        }, rxflag_for(q))
       end
     end
 
@@ -782,16 +1203,17 @@ class FZF
       cache[q] ||= (partial_cache ?
                     partial_cache.map { |e| e.first } : list).map { |line|
         # Ignore errors: e.g. invalid byte sequence in UTF-8
-        md = line.match(regexp) rescue nil
+        md = do_match(line, regexp)
         md && [line, [md.offset(0)]]
       }.compact
     end
   end
 
   class ExtendedFuzzyMatcher < FuzzyMatcher
-    def initialize rxflag
+    def initialize rxflag, mode = :fuzzy, nth = nil, delim = nil
-      super
+      super rxflag, nth, delim
       @regexps = {}
+      @mode = mode
     end
 
     def empty? q
@@ -811,21 +1233,30 @@ class FZF
             case w
             when ''
               nil
+            when /^\^(.*)\$$/
+              Regexp.new('^' << sanitize(Regexp.escape($1)) << '$', rxflag_for(w))
             when /^'/
-              w.length > 1 ?
+              if @mode == :fuzzy && w.length > 1
-                Regexp.new(sanitize(Regexp.escape(w[1..-1])), rxflag) : nil
+                exact_regex w[1..-1]
+              elsif @mode == :exact
+                exact_regex w
+              end
             when /^\^/
               w.length > 1 ?
-                Regexp.new('^' << sanitize(Regexp.escape(w[1..-1])), rxflag) : nil
+                Regexp.new('^' << sanitize(Regexp.escape(w[1..-1])), rxflag_for(w)) : nil
             when /\$$/
               w.length > 1 ?
-                Regexp.new(sanitize(Regexp.escape(w[0..-2])) << '$', rxflag) : nil
+                Regexp.new(sanitize(Regexp.escape(w[0..-2])) << '$', rxflag_for(w)) : nil
             else
-              fuzzy_regex w
+              @mode == :fuzzy ? fuzzy_regex(w) : exact_regex(w)
             end, invert ]
       }.select { |pair| pair.first }
     end
 
+    def exact_regex w
+      Regexp.new(sanitize(Regexp.escape(w)), rxflag_for(w))
+    end
+
     def match list, q, prefix, suffix
       regexps = parse q
       # Look for prefix cache
@@ -842,7 +1273,7 @@ class FZF
         offsets = []
         regexps.all? { |pair|
           regexp, invert = pair
-          md = line.match(regexp) rescue nil
+          md = do_match(line, regexp)
           if md && !invert
             offsets << md.offset(0)
           elsif !md && invert

fzf-completion.bash

@@ -0,0 +1,167 @@
+#!/bin/bash
+#     ____      ____
+#    / __/___  / __/
+#   / /_/_  / / /_
+#  / __/ / /_/ __/
+# /_/   /___/_/-completion.bash
+#
+# - $FZF_COMPLETION_TRIGGER (default: '**')
+# - $FZF_COMPLETION_OPTS    (default: empty)
+
+_fzf_opts_completion() {
+  local cur prev opts
+  COMPREPLY=()
+  cur="${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}" -- ${cur}) )
+    return 0
+  fi
+
+  return 0
+}
+
+_fzf_generic_completion() {
+  local cur base dir leftover matches trigger
+  COMPREPLY=()
+  trigger=${FZF_COMPLETION_TRIGGER:-**}
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  if [[ ${cur} == *"$trigger" ]]; then
+    base=${cur:0:${#cur}-${#trigger}}
+    eval base=$base
+
+    dir="$base"
+    while [ 1 ]; do
+      if [ -z "$dir" -o -d "$dir" ]; then
+        leftover=${base/#"$dir"}
+        leftover=${leftover/#\/}
+        [ "$dir" = './' ] && dir=''
+        tput sc
+        matches=$(find "$dir"* $1 2> /dev/null | fzf $FZF_COMPLETION_OPTS $2 -q "$leftover" | while read item; do
+          printf '%q ' "$item"
+        done)
+        matches=${matches% }
+        if [ -n "$matches" ]; then
+          COMPREPLY=( "$matches" )
+        else
+          COMPREPLY=( "$cur" )
+        fi
+        tput rc
+        return 0
+      fi
+      dir=$(dirname "$dir")
+      [[ "$dir" =~ /$ ]] || dir="$dir"/
+    done
+  fi
+}
+
+_fzf_all_completion() {
+  _fzf_generic_completion \
+    "-name .git -prune -o -name .svn -prune -o -type d -print -o -type f -print -o -type l -print" \
+    "-m"
+}
+
+_fzf_file_completion() {
+  _fzf_generic_completion \
+    "-name .git -prune -o -name .svn -prune -o -type f -print -o -type l -print" \
+    "-m"
+}
+
+_fzf_dir_completion() {
+  _fzf_generic_completion \
+    "-name .git -prune -o -name .svn -prune -o -type d -print" \
+    ""
+}
+
+_fzf_kill_completion() {
+  [ -n "${COMP_WORDS[COMP_CWORD]}" ] && return 1
+
+  local selected
+  tput sc
+  selected=$(ps -ef | sed 1d | fzf -m $FZF_COMPLETION_OPTS | awk '{print $2}' | tr '\n' ' ')
+  tput rc
+
+  if [ -n "$selected" ]; then
+    COMPREPLY=( "$selected" )
+    return 0
+  fi
+}
+
+_fzf_telnet_completion() {
+  local cur selected trigger
+  trigger=${FZF_COMPLETION_TRIGGER:-**}
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  [[ ${cur} == *"$trigger" ]] || return 1
+  cur=${cur:0:${#cur}-${#trigger}}
+
+  tput sc
+  selected=$(grep -v '^\s*\(#\|$\)' /etc/hosts | awk '{print $2}' | sort -u | fzf $FZF_COMPLETION_OPTS -q "$cur")
+  tput rc
+
+  if [ -n "$selected" ]; then
+    COMPREPLY=("$selected")
+    return 0
+  fi
+}
+
+_fzf_ssh_completion() {
+  local cur selected trigger
+  trigger=${FZF_COMPLETION_TRIGGER:-**}
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  [[ ${cur} == *"$trigger" ]] || return 1
+  cur=${cur:0:${#cur}-${#trigger}}
+
+  tput sc
+  selected=$(cat \
+    <(cat ~/.ssh/config /etc/ssh/ssh_config 2> /dev/null | grep -i ^host) \
+    <(grep -v '^\s*\(#\|$\)' /etc/hosts) | \
+    awk '{print $2}' | sort -u | fzf $FZF_COMPLETION_OPTS -q "$cur")
+  tput rc
+
+  if [ -n "$selected" ]; then
+    COMPREPLY=("$selected")
+    return 0
+  fi
+}
+
+complete -F _fzf_opts_completion fzf
+
+# Directory
+for cmd in "cd pushd rmdir"; do
+  complete -F _fzf_dir_completion -o default -o bashdefault $cmd
+done
+
+# File
+for cmd in "
+  awk cat diff diff3
+  emacs ex file ftp g++ gcc gvim head hg java
+  javac ld less more mvim patch perl python ruby
+  sed sftp sort source tail tee uniq vi view vim wc"; do
+  complete -F _fzf_file_completion -o default -o bashdefault $cmd
+done
+
+# Anything
+for cmd in "
+  basename bunzip2 bzip2 chmod chown curl cp dirname du
+  find git grep gunzip gzip hg jar
+  ln ls mv open rm rsync scp
+  svn tar unzip zip"; do
+  complete -F _fzf_all_completion -o default -o bashdefault $cmd
+done
+
+# Kill completion
+complete -F _fzf_kill_completion -o nospace -o default -o bashdefault kill
+
+# Host completion
+complete -F _fzf_ssh_completion -o default -o bashdefault ssh
+complete -F _fzf_telnet_completion -o default -o bashdefault telnet
+

fzf-completion.zsh

@@ -0,0 +1,9 @@
+#!/bin/zsh
+#     ____      ____
+#    / __/___  / __/
+#   / /_/_  / / /_
+#  / __/ / /_/ __/
+# /_/   /___/_/-completion.zsh
+#
+
+# TODO

fzf.gemspec

@@ -1,7 +1,7 @@
 # coding: utf-8
 Gem::Specification.new do |spec|
   spec.name          = 'fzf'
-  spec.version       = '0.4.2'
+  spec.version       = '0.8.4'
   spec.authors       = ['Junegunn Choi']
   spec.email         = ['junegunn.c@gmail.com']
   spec.description   = %q{Fuzzy finder for your shell}
@@ -12,4 +12,6 @@ Gem::Specification.new do |spec|
   spec.bindir        = '.'
   spec.files         = %w[fzf.gemspec]
   spec.executables   = 'fzf'
+
+  spec.extensions   += ['ext/mkrf_conf.rb']
 end

install

@@ -1,7 +1,352 @@
 #!/bin/bash
 
 cd `dirname $BASH_SOURCE`
-mkdir -p ~/bin
+fzf_base=`pwd`
-ln -sf `pwd`/fzf ~/bin/fzf
+
-chmod +x ~/bin/fzf
+# ruby executable
+echo -n "Checking Ruby executable ... "
+ruby=`which ruby`
+if [ $? -ne 0 ]; then
+  echo "ruby executable not found!"
+  exit 1
+fi
+
+# System ruby is preferred
+system_ruby=/usr/bin/ruby
+if [ -x $system_ruby -a $system_ruby != "$ruby" ]; then
+  $system_ruby --disable-gems -rcurses -e0 2> /dev/null
+  [ $? -eq 0 ] && ruby=$system_ruby
+fi
+
+echo "OK ($ruby)"
+
+# Curses-support
+echo -n "Checking Curses support ... "
+"$ruby" -rcurses -e0 2> /dev/null
+if [ $? -eq 0 ]; then
+  echo "OK"
+else
+  echo "Not found"
+  echo "Installing 'curses' gem ... "
+  /usr/bin/env gem install curses -v 1.0.0 --user-install
+  if [ $? -ne 0 ]; then
+    echo
+    echo "Failed to install 'curses' gem."
+    if [[ $(uname -r) =~ 'ARCH' ]]; then
+      echo "Make sure that base-devel package group is installed."
+    fi
+    exit 1
+  fi
+fi
+
+# Ruby version
+echo -n "Checking Ruby version ... "
+"$ruby" -e 'exit RUBY_VERSION >= "1.9"'
+if [ $? -eq 0 ]; then
+  echo ">= 1.9"
+  "$ruby" --disable-gems -rcurses -e0 2> /dev/null
+  if [ $? -eq 0 ]; then
+    fzf_cmd="$ruby --disable-gems $fzf_base/fzf"
+  else
+    fzf_cmd="$ruby $fzf_base/fzf"
+  fi
+else
+  echo "< 1.9"
+  fzf_cmd="$ruby $fzf_base/fzf"
+fi
+
+# Auto-completion
+read -p "Do you want to add auto-completion support? ([y]/n) " -n 1 -r
+echo
+[[ ! $REPLY =~ ^[Nn]$ ]]
+auto_completion=$?
+
+# Key-bindings
+read -p "Do you want to add key bindings? ([y]/n) " -n 1 -r
+echo
+[[ ! $REPLY =~ ^[Nn]$ ]]
+key_bindings=$?
+
+echo
+for shell in bash zsh; do
+  echo -n "Generate ~/.fzf.$shell ... "
+  src=~/.fzf.${shell}
+
+  fzf_completion="[[ \$- =~ i ]] && source $fzf_base/fzf-completion.${shell}"
+  if [ $auto_completion -ne 0 ]; then
+    fzf_completion="# $fzf_completion"
+  fi
+
+  cat > $src << EOF
+# Setup fzf function
+# ------------------
+unalias fzf 2> /dev/null
+fzf() {
+  $fzf_cmd "\$@"
+}
+export -f fzf > /dev/null
+
+# Auto-completion
+# ---------------
+$fzf_completion
+
+EOF
+
+  if [ $key_bindings -eq 0 ]; then
+    if [ $shell = bash ]; then
+      cat >> $src << "EOFZF"
+# Key bindings
+# ------------
+__fsel() {
+  find * -path '*/\.*' -prune \
+    -o -type f -print \
+    -o -type d -print \
+    -o -type l -print 2> /dev/null | fzf -m | while read item; do
+    printf '%q ' "$item"
+  done
+  echo
+}
+
+if [[ $- =~ i ]]; then
+
+__fsel_tmux() {
+  local height
+  height=${FZF_TMUX_HEIGHT:-40%}
+  if [[ $height =~ %$ ]]; then
+    height="-p ${height%\%}"
+  else
+    height="-l $height"
+  fi
+  tmux split-window $height "bash -c 'source ~/.fzf.bash; tmux send-keys -t $TMUX_PANE \"\$(__fsel)\"'"
+}
+
+__fcd() {
+  local dir
+  dir=$(find ${1:-*} -path '*/\.*' -prune -o -type d -print 2> /dev/null | fzf +m) && printf 'cd %q' "$dir"
+}
+
+__use_tmux=0
+[ -n "$TMUX_PANE" -a ${FZF_TMUX:-1} -ne 0 -a ${LINES:-40} -gt 15 ] && __use_tmux=1
+
+if [ -z "$(set -o | grep '^vi.*on')" ]; then
+  # Required to refresh the prompt after fzf
+  bind '"\er": redraw-current-line'
+
+  # CTRL-T - Paste the selected file path into the command line
+  if [ $__use_tmux -eq 1 ]; then
+    bind '"\C-t": " \C-u \C-a\C-k$(__fsel_tmux)\e\C-e\C-y\C-a\C-d\C-y\ey\C-h"'
+  else
+    bind '"\C-t": " \C-u \C-a\C-k$(__fsel)\e\C-e\C-y\C-a\C-y\ey\C-h\C-e\er \C-h"'
+  fi
+
+  # CTRL-R - Paste the selected command from history into the command line
+  bind '"\C-r": " \C-e\C-u$(HISTTIMEFORMAT= history | fzf +s | sed \"s/ *[0-9]* *//\")\e\C-e\er"'
+
+  # ALT-C - cd into the selected directory
+  bind '"\ec": " \C-e\C-u$(__fcd)\e\C-e\er\C-m"'
+else
+  bind '"\C-x\C-e": shell-expand-line'
+  bind '"\C-x\C-r": redraw-current-line'
+
+  # CTRL-T - Paste the selected file path into the command line
+  # - FIXME: Selected items are attached to the end regardless of cursor position
+  if [ $__use_tmux -eq 1 ]; then
+    bind '"\C-t": "\e$a \eddi$(__fsel_tmux)\C-x\C-e\e0P$xa"'
+  else
+    bind '"\C-t": "\e$a \eddi$(__fsel)\C-x\C-e\e0Px$a \C-x\C-r\exa "'
+  fi
+
+  # CTRL-R - Paste the selected command from history into the command line
+  bind '"\C-r": "\eddi$(HISTTIMEFORMAT= history | fzf +s | sed \"s/ *[0-9]* *//\")\C-x\C-e\e$a\C-x\C-r"'
+
+  # ALT-C - cd into the selected directory
+  bind '"\ec": "\eddi$(__fcd)\C-x\C-e\C-x\C-r\C-m"'
+fi
+
+unset __use_tmux
+
+fi
+EOFZF
+    else
+      cat >> $src << "EOFZF"
+# Key bindings
+# ------------
+# CTRL-T - Paste the selected file path(s) into the command line
+__fsel() {
+  set -o nonomatch
+  find * -path '*/\.*' -prune \
+    -o -type f -print \
+    -o -type d -print \
+    -o -type l -print 2> /dev/null | fzf -m | while read item; do
+    printf '%q ' "$item"
+  done
+  echo
+}
+
+if [[ $- =~ i ]]; then
+
+if [ -n "$TMUX_PANE" -a ${FZF_TMUX:-1} -ne 0 -a ${LINES:-40} -gt 15 ]; then
+  fzf-file-widget() {
+    local height
+    height=${FZF_TMUX_HEIGHT:-40%}
+    if [[ $height =~ %$ ]]; then
+      height="-p ${height%\%}"
+    else
+      height="-l $height"
+    fi
+    tmux split-window $height "zsh -c 'source ~/.fzf.zsh; tmux send-keys -t $TMUX_PANE \"\$(__fsel)\"'"
+  }
+else
+  fzf-file-widget() {
+    LBUFFER="${LBUFFER%% #}$(__fsel)"
+    zle redisplay
+  }
+fi
+zle     -N   fzf-file-widget
+bindkey '^T' fzf-file-widget
+
+# ALT-C - cd into the selected directory
+fzf-cd-widget() {
+  cd "${$(set -o nonomatch; find * -path '*/\.*' -prune \
+          -o -type d -print 2> /dev/null | fzf):-.}"
+  zle reset-prompt
+}
+zle     -N    fzf-cd-widget
+bindkey '\ec' fzf-cd-widget
+
+# CTRL-R - Paste the selected command from history into the command line
+fzf-history-widget() {
+  LBUFFER=$(fc -l 1 | fzf +s | sed "s/ *[0-9]* *//")
+  zle redisplay
+}
+zle     -N   fzf-history-widget
+bindkey '^R' fzf-history-widget
+
+fi
+EOFZF
+    fi
+  fi
+
+  echo "OK"
+done
+
+# fish
+has_fish=0
+if [ -n "$(which fish)" ]; then
+  has_fish=1
+  echo -n "Generate ~/.config/fish/functions/fzf.fish ... "
+  mkdir -p ~/.config/fish/functions
+  cat > ~/.config/fish/functions/fzf.fish << EOFZF
+function fzf
+  $fzf_cmd \$argv
+end
+EOFZF
+  echo "ok"
+
+  if [ $key_bindings -eq 0 ]; then
+    echo -n "Generate ~/.config/fish/functions/fzf_key_bindings.fish ... "
+    cat > ~/.config/fish/functions/fzf_key_bindings.fish << "EOFZF"
+function fzf_key_bindings
+  function __fzf_select
+    find * -path '*/\.*' -prune \
+      -o -type f -print \
+      -o -type d -print \
+      -o -type l -print 2> /dev/null | fzf -m | while read item
+      echo -n (echo -n "$item" | sed 's/ /\\\\ /g')' '
+    end
+    echo
+  end
+
+  function __fzf_ctrl_t
+    if [ -n "$TMUX_PANE" -a "$FZF_TMUX" != "0" ]
+      tmux split-window (__fzf_tmux_height) "fish -c 'fzf_key_bindings; __fzf_ctrl_t_tmux \\$TMUX_PANE'"
+    else
+      __fzf_select > $TMPDIR/fzf.result
+      and commandline -i (cat $TMPDIR/fzf.result)
+      rm -f $TMPDIR/fzf.result
+    end
+  end
+
+  function __fzf_ctrl_t_tmux
+    __fzf_select > $TMPDIR/fzf.result
+    and tmux send-keys -t $argv[1] (cat $TMPDIR/fzf.result)
+    rm -f $TMPDIR/fzf.result
+  end
+
+  function __fzf_ctrl_r
+    if history | fzf +s +m > $TMPDIR/fzf.result
+      commandline (cat $TMPDIR/fzf.result)
+    else
+      commandline -f repaint
+    end
+    rm -f $TMPDIR/fzf.result
+  end
+
+  function __fzf_alt_c
+    find * -path '*/\.*' -prune -o -type d -print 2> /dev/null | fzf +m > $TMPDIR/fzf.result
+    if [ (cat $TMPDIR/fzf.result | wc -l) -gt 0 ]
+      cd (cat $TMPDIR/fzf.result)
+    end
+    commandline -f repaint
+    rm -f $TMPDIR/fzf.result
+  end
+
+  function __fzf_tmux_height
+    if set -q FZF_TMUX_HEIGHT
+      set height $FZF_TMUX_HEIGHT
+    else
+      set height 40%
+    end
+    if echo $height | grep -q -E '%$'
+      echo "-p "(echo $height | sed 's/%$//')
+    else
+      echo "-l $height"
+    end
+    set -e height
+  end
+
+  bind \ct '__fzf_ctrl_t'
+  bind \cr '__fzf_ctrl_r'
+  bind \ec '__fzf_alt_c'
+end
+EOFZF
+    echo "ok"
+  fi
+fi
+
+append_line() {
+  echo "Update $2:"
+  echo "  - $1"
+  [ -f "$2" ] || touch "$2"
+  line=$(grep -nF "$1" "$2" | sed 's/:.*//')
+  if [ -n "$line" ]; then
+    echo "    - Already exists (line #$line)"
+  else
+    echo "$1" >> "$2"
+    echo "    - Added"
+  fi
+  echo
+}
+
+echo
+for shell in bash zsh; do
+  append_line "source ~/.fzf.${shell}" ~/.${shell}rc
+done
+
+if [ $key_bindings -eq 0 -a $has_fish -eq 1 ]; then
+  bind_file=~/.config/fish/functions/fish_user_key_bindings.fish
+  append_line "fzf_key_bindings" "$bind_file"
+fi
+
+cat << EOF
+Finished. Restart your shell or reload config file.
+   source ~/.bashrc  # bash
+   source ~/.zshrc   # zsh
+EOF
+[ $has_fish -eq 1 ] && echo "   fzf_key_bindings  # fish"; cat << EOF
+
+To uninstall fzf, simply remove the added lines.
+
+For more information, see: https://github.com/junegunn/fzf
+EOF
 

plugin/fzf.vim

@@ -1,4 +1,4 @@
-" Copyright (c) 2013 Junegunn Choi
+" Copyright (c) 2014 Junegunn Choi
 "
 " MIT License
 "
@@ -21,27 +21,201 @@
 " OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 " WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-let s:exec = expand('<sfile>:h:h').'/fzf'
+let s:min_tmux_width  = 10
+let s:min_tmux_height = 3
+let s:default_tmux_height = '40%'
 
-function! fzf#run(command, args)
+let s:cpo_save = &cpo
-  try
+set cpo&vim
-    let tf      = tempname()
+
-    let prefix  = exists('g:fzf_source') ? g:fzf_source.'|' : ''
+call system('type fzf')
-    let fzf     = executable(s:exec)     ? s:exec : 'fzf'
+if v:shell_error
-    let options = empty(a:args)          ? get(g:, 'fzf_options', '') : a:args
+  let s:fzf_rb = expand('<sfile>:h:h').'/fzf'
-    execute "silent !".prefix.fzf.' '.options." > ".tf
+  if executable(s:fzf_rb)
-    if !v:shell_error
+    let s:exec = s:fzf_rb
-      for line in readfile(tf)
+  else
-        if !empty(line)
+    echoerr 'fzf executable not found'
-          execute a:command.' '.line
+    finish
+  endif
+else
+  let s:exec = 'fzf'
+endif
+
+function! s:tmux_enabled()
+  if exists('s:tmux')
+    return s:tmux
+  endif
+
+  let s:tmux = 0
+  if exists('$TMUX')
+    let output = system('tmux -V')
+    let s:tmux = !v:shell_error && output >= 'tmux 1.7'
+  endif
+  return s:tmux
+endfunction
+
+function! s:shellesc(arg)
+  return '"'.substitute(a:arg, '"', '\\"', 'g').'"'
+endfunction
+
+function! s:escape(path)
+  return substitute(a:path, ' ', '\\ ', 'g')
+endfunction
+
+function! fzf#run(...) abort
+  if has('gui_running')
+    echohl Error
+    echo 'GVim is not supported'
+    return []
+  endif
+  let dict   = exists('a:1') ? a:1 : {}
+  let temps  = { 'result': tempname() }
+  let optstr = get(dict, 'options', '')
+
+  if has_key(dict, 'source')
+    let source = dict.source
+    let type = type(source)
+    if type == 1
+      let prefix = source.'|'
+    elseif type == 3
+      let temps.input = tempname()
+      call writefile(source, temps.input)
+      let prefix = 'cat '.s:shellesc(temps.input).'|'
+    else
+      throw 'Invalid source type'
+    endif
+  else
+    let prefix = ''
+  endif
+  let command = prefix.s:exec.' '.optstr.' > '.temps.result
+
+  if s:tmux_enabled() && s:tmux_splittable(dict)
+    return s:execute_tmux(dict, command, temps)
+  else
+    return s:execute(dict, command, temps)
+  endif
+endfunction
+
+function! s:tmux_splittable(dict)
+  return
+  \ min([&columns, get(a:dict, 'tmux_width', 0)]) >= s:min_tmux_width ||
+  \ min([&lines, get(a:dict, 'tmux_height', get(a:dict, 'tmux', 0))]) >= s:min_tmux_height
+endfunction
+
+function! s:pushd(dict)
+  if has_key(a:dict, 'dir')
+    let a:dict.prev_dir = getcwd()
+    execute 'chdir '.s:escape(a:dict.dir)
+  endif
+endfunction
+
+function! s:popd(dict)
+  if has_key(a:dict, 'prev_dir')
+    execute 'chdir '.s:escape(remove(a:dict, 'prev_dir'))
+  endif
+endfunction
+
+function! s:execute(dict, command, temps)
+  call s:pushd(a:dict)
+  silent !clear
+  execute 'silent !'.a:command
+  redraw!
+  if v:shell_error
+    return []
+  else
+    return s:callback(a:dict, a:temps, 0)
+  endif
+endfunction
+
+function! s:execute_tmux(dict, command, temps)
+  if has_key(a:dict, 'dir')
+    let command = 'cd '.s:escape(a:dict.dir).' && '.a:command
+  else
+    let command = a:command
+  endif
+
+  let splitopt = '-v'
+  if has_key(a:dict, 'tmux_width')
+    let splitopt = '-h'
+    let size = a:dict.tmux_width
+  else
+    let size = get(a:dict, 'tmux_height', get(a:dict, 'tmux'))
+  endif
+
+  if type(size) == 1 && size =~ '%$'
+    let sizeopt = '-p '.size[0:-2]
+  else
+    let sizeopt = '-l '.size
+  endif
+
+  let s:pane = substitute(
+    \ system(
+      \ printf(
+        \ 'tmux split-window %s %s -P -F "#{pane_id}" %s',
+        \ splitopt, sizeopt, s:shellesc(command))), '\n', '', 'g')
+  let s:dict = a:dict
+  let s:temps = a:temps
+
+  augroup fzf_tmux
+    autocmd!
+    autocmd VimResized * nested call s:tmux_check()
+  augroup END
+endfunction
+
+function! s:tmux_check()
+  let panes = split(system('tmux list-panes -a -F "#{pane_id}"'), '\n')
+
+  if index(panes, s:pane) < 0
+    augroup fzf_tmux
+      autocmd!
+    augroup END
+
+    call s:callback(s:dict, s:temps, 1)
+    redraw
+  endif
+endfunction
+
+function! s:callback(dict, temps, cd)
+  if !filereadable(a:temps.result)
+    let lines = []
+  else
+    if a:cd | call s:pushd(a:dict) | endif
+
+    let lines = readfile(a:temps.result)
+    if has_key(a:dict, 'sink')
+      for line in lines
+        if type(a:dict.sink) == 2
+          call a:dict.sink(line)
+        else
+          execute a:dict.sink.' '.s:escape(line)
         endif
       endfor
     endif
-  finally
+  endif
-    redraw!
+
+  for tf in values(a:temps)
     silent! call delete(tf)
-  endtry
+  endfor
+
+  call s:popd(a:dict)
+
+  return lines
 endfunction
 
-command! -nargs=* FZF call fzf#run('silent e', <q-args>)
+function! s:cmd(bang, ...) abort
+  let args = copy(a:000)
+  let opts = {}
+  if len(args) > 0 && isdirectory(expand(args[-1]))
+    let opts.dir = remove(args, -1)
+  endif
+  if !a:bang
+    let opts.tmux = get(g:, 'fzf_tmux_height', s:default_tmux_height)
+  endif
+  call fzf#run(extend({ 'sink': 'e', 'options': join(args) }, opts))
+endfunction
+
+command! -nargs=* -complete=dir -bang FZF call s:cmd('<bang>' == '!', <f-args>)
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
 

test/fzf.vader

@@ -0,0 +1,37 @@
+Execute (Setup):
+  let g:dir = fnamemodify(g:vader_file, ':p:h')
+  Log 'Test directory: ' . g:dir
+
+Execute (fzf#run with dir option):
+  let result = fzf#run({ 'options': '--filter=vdr', 'dir': g:dir })
+  AssertEqual ['fzf.vader'], result
+
+  let result = sort(fzf#run({ 'options': '--filter e', 'dir': g:dir }))
+  AssertEqual ['fzf.vader', 'test_fzf.rb'], result
+
+Execute (fzf#run with Funcref command):
+  let g:ret = []
+  function! g:proc(e)
+    call add(g:ret, a:e)
+  endfunction
+  let result = sort(fzf#run({ 'sink': function('g:proc'), 'options': '--filter e', 'dir': g:dir }))
+  AssertEqual ['fzf.vader', 'test_fzf.rb'], result
+  AssertEqual ['fzf.vader', 'test_fzf.rb'], sort(g:ret)
+
+Execute (fzf#run with string source):
+  let result = sort(fzf#run({ 'source': 'echo hi', 'options': '-f i' }))
+  AssertEqual ['hi'], result
+
+Execute (fzf#run with list source):
+  let result = sort(fzf#run({ 'source': ['hello', 'world'], 'options': '-f e' }))
+  AssertEqual ['hello'], result
+  let result = sort(fzf#run({ 'source': ['hello', 'world'], 'options': '-f o' }))
+  AssertEqual ['hello', 'world'], result
+
+Execute (fzf#run with string source):
+  let result = sort(fzf#run({ 'source': 'echo hi', 'options': '-f i' }))
+  AssertEqual ['hi'], result
+
+Execute (Cleanup):
+  unlet g:dir
+  Restore

test/test_fzf.rb

@@ -1,50 +1,156 @@
 #!/usr/bin/env ruby
 # encoding: utf-8
 
+require 'curses'
+require 'timeout'
+require 'stringio'
 require 'minitest/autorun'
 $LOAD_PATH.unshift File.expand_path('../..', __FILE__)
 ENV['FZF_EXECUTABLE'] = '0'
 load 'fzf'
 
 class TestFZF < MiniTest::Unit::TestCase
+  def setup
+    ENV.delete 'FZF_DEFAULT_SORT'
+    ENV.delete 'FZF_DEFAULT_OPTS'
+    ENV.delete 'FZF_DEFAULT_COMMAND'
+  end
+
   def test_default_options
     fzf = FZF.new []
-    assert_equal 1000, fzf.sort
+    assert_equal 1000,  fzf.sort
     assert_equal false, fzf.multi
-    assert_equal true, fzf.color
+    assert_equal true,  fzf.color
-    assert_equal Regexp::IGNORECASE, fzf.rxflag
+    assert_equal nil,   fzf.rxflag
+    assert_equal true,  fzf.mouse
+    assert_equal nil,   fzf.nth
+    assert_equal true,  fzf.color
+    assert_equal false, fzf.black
+    assert_equal true,  fzf.ansi256
+    assert_equal '',    fzf.query.get
+    assert_equal false, fzf.select1
+    assert_equal false, fzf.exit0
+    assert_equal nil,   fzf.filter
+    assert_equal nil,   fzf.extended
+    assert_equal false, fzf.reverse
+  end
 
-    begin
+  def test_environment_variables
-      ENV['FZF_DEFAULT_SORT'] = '1500'
+    # Deprecated
-      fzf = FZF.new []
+    ENV['FZF_DEFAULT_SORT'] = '20000'
-      assert_equal 1500, fzf.sort
+    fzf = FZF.new []
-    ensure
+    assert_equal 20000, fzf.sort
-      ENV.delete 'FZF_DEFAULT_SORT'
+    assert_equal nil,   fzf.nth
-    end
+
+    ENV['FZF_DEFAULT_OPTS'] =
+      '-x -m -s 10000 -q "  hello  world  " +c +2 --select-1 -0 ' +
+      '--no-mouse -f "goodbye world" --black --nth=3,-1,2 --reverse'
+    fzf = FZF.new []
+    assert_equal 10000,   fzf.sort
+    assert_equal '  hello  world  ',
+                          fzf.query.get
+    assert_equal 'goodbye world',
+                          fzf.filter
+    assert_equal :fuzzy,  fzf.extended
+    assert_equal true,    fzf.multi
+    assert_equal false,   fzf.color
+    assert_equal false,   fzf.ansi256
+    assert_equal true,    fzf.black
+    assert_equal false,   fzf.mouse
+    assert_equal true,    fzf.select1
+    assert_equal true,    fzf.exit0
+    assert_equal true,    fzf.reverse
+    assert_equal [3, -1, 2], fzf.nth
   end
 
   def test_option_parser
     # Long opts
-    fzf = FZF.new %w[--sort=2000 --no-color --multi +i]
+    fzf = FZF.new %w[--sort=2000 --no-color --multi +i --query hello --select-1
-    assert_equal 2000, fzf.sort
+                     --exit-0 --filter=howdy --extended-exact
-    assert_equal true, fzf.multi
+                     --no-mouse --no-256 --nth=1 --reverse]
-    assert_equal false, fzf.color
+    assert_equal 2000,    fzf.sort
-    assert_equal 0, fzf.rxflag
+    assert_equal true,    fzf.multi
+    assert_equal false,   fzf.color
+    assert_equal false,   fzf.ansi256
+    assert_equal false,   fzf.black
+    assert_equal false,   fzf.mouse
+    assert_equal 0,       fzf.rxflag
+    assert_equal 'hello', fzf.query.get
+    assert_equal true,    fzf.select1
+    assert_equal true,    fzf.exit0
+    assert_equal 'howdy', fzf.filter
+    assert_equal :exact,  fzf.extended
+    assert_equal [1],     fzf.nth
+    assert_equal true,    fzf.reverse
+
+    # Long opts (left-to-right)
+    fzf = FZF.new %w[--sort=2000 --no-color --multi +i --query=hello
+                     --filter a --filter b --no-256 --black --nth -1 --nth -2
+                     --select-1 --exit-0 --no-select-1 --no-exit-0
+                     --no-sort -i --color --no-multi --256
+                     --reverse --no-reverse]
+    assert_equal nil,     fzf.sort
+    assert_equal false,   fzf.multi
+    assert_equal true,    fzf.color
+    assert_equal true,    fzf.ansi256
+    assert_equal true,    fzf.black
+    assert_equal true,    fzf.mouse
+    assert_equal 1,       fzf.rxflag
+    assert_equal 'b',     fzf.filter
+    assert_equal 'hello', fzf.query.get
+    assert_equal false,   fzf.select1
+    assert_equal false,   fzf.exit0
+    assert_equal nil,     fzf.extended
+    assert_equal [-2],    fzf.nth
+    assert_equal false,   fzf.reverse
 
     # Short opts
-    fzf = FZF.new %w[-s 2000 +c -m +i]
+    fzf = FZF.new %w[-s2000 +c -m +i -qhello -x -fhowdy +2 -n3 -1 -0]
-    assert_equal 2000, fzf.sort
+    assert_equal 2000,    fzf.sort
-    assert_equal true, fzf.multi
+    assert_equal true,    fzf.multi
-    assert_equal false, fzf.color
+    assert_equal false,   fzf.color
-    assert_equal 0, fzf.rxflag
+    assert_equal false,   fzf.ansi256
+    assert_equal 0,       fzf.rxflag
+    assert_equal 'hello', fzf.query.get
+    assert_equal 'howdy', fzf.filter
+    assert_equal :fuzzy,  fzf.extended
+    assert_equal [3],     fzf.nth
+    assert_equal true,    fzf.select1
+    assert_equal true,    fzf.exit0
+
+    # Left-to-right
+    fzf = FZF.new %w[-s 2000 +c -m +i -qhello -x -fgoodbye +2 -n3 -n4,5
+                     -s 3000 -c +m -i -q world +x -fworld -2 --black --no-black
+                     -1 -0 +1 +0
+                    ]
+    assert_equal 3000,    fzf.sort
+    assert_equal false,   fzf.multi
+    assert_equal true,    fzf.color
+    assert_equal true,    fzf.ansi256
+    assert_equal false,   fzf.black
+    assert_equal 1,       fzf.rxflag
+    assert_equal 'world', fzf.query.get
+    assert_equal false,   fzf.select1
+    assert_equal false,   fzf.exit0
+    assert_equal 'world', fzf.filter
+    assert_equal nil,     fzf.extended
+    assert_equal [4, 5],  fzf.nth
+  rescue SystemExit => e
+    assert false, "Exited"
   end
 
   def test_invalid_option
-    [%w[-s 2000 +s], %w[yo dawg]].each do |argv|
+    [%w[--unknown], %w[yo dawg]].each do |argv|
       assert_raises(SystemExit) do
         fzf = FZF.new argv
       end
     end
+    assert_raises(SystemExit) do
+      fzf = FZF.new %w[--nth=0]
+    end
+    assert_raises(SystemExit) do
+      fzf = FZF.new %w[-n 0]
+    end
   end
 
   # FIXME Only on 1.9 or above
@@ -139,15 +245,59 @@ class TestFZF < MiniTest::Unit::TestCase
     # TODO : partial_cache
   end
 
+  def test_fuzzy_matcher_rxflag
+    assert_equal nil, FZF::FuzzyMatcher.new(nil).rxflag
+    assert_equal 0, FZF::FuzzyMatcher.new(0).rxflag
+    assert_equal 1, FZF::FuzzyMatcher.new(1).rxflag
+
+    assert_equal 1, FZF::FuzzyMatcher.new(nil).rxflag_for('abc')
+    assert_equal 0, FZF::FuzzyMatcher.new(nil).rxflag_for('Abc')
+    assert_equal 0, FZF::FuzzyMatcher.new(0).rxflag_for('abc')
+    assert_equal 0, FZF::FuzzyMatcher.new(0).rxflag_for('Abc')
+    assert_equal 1, FZF::FuzzyMatcher.new(1).rxflag_for('abc')
+    assert_equal 1, FZF::FuzzyMatcher.new(1).rxflag_for('Abc')
+  end
+
   def test_fuzzy_matcher_case_sensitive
+    # Smart-case match (Uppercase found)
+    assert_equal [['Fruit', [[0, 5]]]],
+      FZF::FuzzyMatcher.new(nil).match(%w[Fruit Grapefruit], 'Fruit', '', '').sort
+
+    # Smart-case match (Uppercase not-found)
+    assert_equal [["Fruit", [[0, 5]]], ["Grapefruit", [[5, 10]]]],
+      FZF::FuzzyMatcher.new(nil).match(%w[Fruit Grapefruit], 'fruit', '', '').sort
+
+    # Case-sensitive match (-i)
     assert_equal [['Fruit', [[0, 5]]]],
       FZF::FuzzyMatcher.new(0).match(%w[Fruit Grapefruit], 'Fruit', '', '').sort
 
+    # Case-insensitive match (+i)
     assert_equal [["Fruit", [[0, 5]]], ["Grapefruit", [[5, 10]]]],
       FZF::FuzzyMatcher.new(Regexp::IGNORECASE).
       match(%w[Fruit Grapefruit], 'Fruit', '', '').sort
   end
 
+  def test_extended_fuzzy_matcher_case_sensitive
+    %w['Fruit Fruit$].each do |q|
+      # Smart-case match (Uppercase found)
+      assert_equal [['Fruit', [[0, 5]]]],
+        FZF::ExtendedFuzzyMatcher.new(nil).match(%w[Fruit Grapefruit], q, '', '').sort
+
+      # Smart-case match (Uppercase not-found)
+      assert_equal [["Fruit", [[0, 5]]], ["Grapefruit", [[5, 10]]]],
+        FZF::ExtendedFuzzyMatcher.new(nil).match(%w[Fruit Grapefruit], q.downcase, '', '').sort
+
+      # Case-sensitive match (-i)
+      assert_equal [['Fruit', [[0, 5]]]],
+        FZF::ExtendedFuzzyMatcher.new(0).match(%w[Fruit Grapefruit], q, '', '').sort
+
+      # Case-insensitive match (+i)
+      assert_equal [["Fruit", [[0, 5]]], ["Grapefruit", [[5, 10]]]],
+        FZF::ExtendedFuzzyMatcher.new(Regexp::IGNORECASE).
+        match(%w[Fruit Grapefruit], q, '', '').sort
+    end
+  end
+
   def test_extended_fuzzy_matcher
     matcher = FZF::ExtendedFuzzyMatcher.new Regexp::IGNORECASE
     list = %w[
@@ -184,6 +334,11 @@ class TestFZF < MiniTest::Unit::TestCase
       assert_equal list.length,     match.call('j', '').length
       assert_equal list.length - 1, match.call('^j', '').length
 
+      # ^ + $
+      assert_equal 0, match.call('^juici$', '').length
+      assert_equal 1, match.call('^juice$', '').length
+      assert_equal 0, match.call('^.*$', '').length
+
       # !
       assert_equal 0, match.call('!j', '').length
 
@@ -250,7 +405,7 @@ class TestFZF < MiniTest::Unit::TestCase
        ["0____1",   [[0, 6]]],
        ["0_____1",  [[0, 7]]],
        ["0______1", [[0, 8]]]],
-      FZF.new([]).sort_by_rank(matcher.match(list, '01', '', '')))
+      FZF.sort(matcher.match(list, '01', '', '')))
 
     assert_equal(
       [["01",       [[0, 1], [1, 2]]],
@@ -261,16 +416,38 @@ class TestFZF < MiniTest::Unit::TestCase
        ["____0_1",  [[4, 5], [6, 7]]],
        ["0______1", [[0, 1], [7, 8]]],
        ["___01___", [[3, 4], [4, 5]]]],
-      FZF.new([]).sort_by_rank(xmatcher.match(list, '0 1', '', '')))
+      FZF.sort(xmatcher.match(list, '0 1', '', '')))
 
     assert_equal(
-      [["_01_",     [[1, 3], [0, 4]]],
+      [["_01_",     [[1, 3], [0, 4]], [4, 4, "_01_"]],
-       ["0____1",   [[0, 6], [1, 3]]],
+       ["___01___", [[3, 5], [0, 2]], [4, 8, "___01___"]],
-       ["0_____1",  [[0, 7], [1, 3]]],
+       ["____0_1",  [[4, 7], [0, 2]], [5, 7, "____0_1"]],
-       ["0______1", [[0, 8], [1, 3]]],
+       ["0____1",   [[0, 6], [1, 3]], [6, 6, "0____1"]],
-       ["___01___", [[3, 5], [0, 2]]],
+       ["0_____1",  [[0, 7], [1, 3]], [7, 7, "0_____1"]],
-       ["____0_1",  [[4, 7], [0, 2]]]],
+       ["0______1", [[0, 8], [1, 3]], [8, 8, "0______1"]]],
-      FZF.new([]).sort_by_rank(xmatcher.match(list, '01 __', '', '')))
+      FZF.sort(xmatcher.match(list, '01 __', '', '')).map { |tuple|
+        tuple << FZF.rank(tuple)
+      }
+    )
+  end
+
+  def test_extended_exact_mode
+    exact = FZF::ExtendedFuzzyMatcher.new Regexp::IGNORECASE, :exact
+    fuzzy = FZF::ExtendedFuzzyMatcher.new Regexp::IGNORECASE, :fuzzy
+    list = %w[
+      extended-exact-mode-not-fuzzy
+      extended'-fuzzy-mode
+    ]
+    assert_equal 2, fuzzy.match(list, 'extended', '', '').length
+    assert_equal 2, fuzzy.match(list, 'mode extended', '', '').length
+    assert_equal 2, fuzzy.match(list, 'xtndd', '', '').length
+    assert_equal 2, fuzzy.match(list, "'-fuzzy", '', '').length
+
+    assert_equal 2, exact.match(list, 'extended', '', '').length
+    assert_equal 2, exact.match(list, 'mode extended', '', '').length
+    assert_equal 0, exact.match(list, 'xtndd', '', '').length
+    assert_equal 1, exact.match(list, "'-fuzzy", '', '').length
+    assert_equal 2, exact.match(list, "-fuzzy", '', '').length
   end
 
   if RUBY_PLATFORM =~ /darwin/
@@ -319,5 +496,175 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal ["a", "b", "c", "\xFF", "d", "e", "f"],
       FZF::UConv.split("abc\xFFdef")
   end
+
+  # ^$ -> matches empty item
+  def test_format_empty_item
+    fzf = FZF.new []
+    item = ['', [[0, 0]]]
+    line, offsets = fzf.convert_item item
+    tokens        = fzf.format line, 80, offsets
+    assert_equal [], tokens
+  end
+
+  def test_mouse_event
+    interval = FZF::MouseEvent::DOUBLE_CLICK_INTERVAL
+    me = FZF::MouseEvent.new nil
+    me.v = 10
+    assert_equal false, me.double?(10)
+    assert_equal false, me.double?(20)
+    me.v = 20
+    assert_equal false, me.double?(10)
+    assert_equal false, me.double?(20)
+    me.v = 20
+    assert_equal false, me.double?(10)
+    assert_equal true,  me.double?(20)
+    sleep interval
+    assert_equal false,  me.double?(20)
+  end
+
+  def test_nth_match
+    list = [
+      ' first  second  third',
+      'fourth	 fifth   sixth',
+    ]
+
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE
+    assert_equal list, matcher.match(list, 'f', '', '').map(&:first)
+    assert_equal [
+      [list[0], [[2,  5]]],
+      [list[1], [[9, 17]]]], matcher.match(list, 'is', '', '')
+
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [2]
+    assert_equal [[list[1], [[8, 9]]]], matcher.match(list, 'f', '', '')
+    assert_equal [[list[0], [[8, 9]]]], matcher.match(list, 's', '', '')
+
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [3]
+    assert_equal [[list[0], [[19, 20]]]], matcher.match(list, 'r', '', '')
+
+    # Comma-separated
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [3, 1]
+    assert_equal [[list[0], [[19, 20]]], [list[1], [[3, 4]]]], matcher.match(list, 'r', '', '')
+
+    # Ordered
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [1, 3]
+    assert_equal [[list[0], [[3, 4]]], [list[1], [[3, 4]]]], matcher.match(list, 'r', '', '')
+
+    regex = FZF.build_delim_regex "\t"
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [1], regex
+    assert_equal [[list[0], [[3, 10]]]], matcher.match(list, 're', '', '')
+
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [2], regex
+    assert_equal [], matcher.match(list, 'r', '', '')
+    assert_equal [[list[1], [[9, 17]]]], matcher.match(list, 'is', '', '')
+
+    # Negative indexing
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [-1], regex
+    assert_equal [[list[0], [[3, 6]]]], matcher.match(list, 'rt', '', '')
+    assert_equal [[list[0], [[2, 5]]], [list[1], [[9, 17]]]], matcher.match(list, 'is', '', '')
+
+    # Regex delimiter
+    regex = FZF.build_delim_regex "[ \t]+"
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [1], regex
+    assert_equal [list[1]], matcher.match(list, 'f', '', '').map(&:first)
+
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [2], regex
+    assert_equal [[list[0], [[1, 2]]], [list[1], [[8, 9]]]], matcher.match(list, 'f', '', '')
+  end
+
+  def stream_for str
+    StringIO.new(str).tap do |sio|
+      sio.instance_eval do
+        alias org_gets gets
+
+        def gets
+          org_gets.tap { |e| sleep 0.5 unless e.nil? }
+        end
+      end
+    end
+  end
+
+  def test_select_1
+    stream = stream_for "Hello\nWorld"
+    output = StringIO.new
+
+    begin
+      $stdout = output
+      FZF.new(%w[--query=ol --select-1], stream).start
+    rescue SystemExit => e
+      assert_equal 0, e.status
+      assert_equal 'World', output.string.chomp
+    ensure
+      $stdout = STDOUT
+    end
+  end
+
+  def test_select_1_without_query
+    stream = stream_for "Hello World"
+    output = StringIO.new
+
+    begin
+      $stdout = output
+      FZF.new(%w[--select-1], stream).start
+    rescue SystemExit => e
+      assert_equal 0, e.status
+      assert_equal 'Hello World', output.string.chomp
+    ensure
+      $stdout = STDOUT
+    end
+  end
+
+  def test_select_1_ambiguity
+    stream = stream_for "Hello\nWorld"
+    begin
+      Timeout::timeout(3) do
+        FZF.new(%w[--query=o --select-1], stream).start
+      end
+      flunk 'Should not reach here'
+    rescue Exception => e
+      Curses.close_screen
+      assert_instance_of Timeout::Error, e
+    end
+  end
+
+  def test_exit_0
+    stream = stream_for "Hello\nWorld"
+    output = StringIO.new
+
+    begin
+      $stdout = output
+      FZF.new(%w[--query=zz --exit-0], stream).start
+    rescue SystemExit => e
+      assert_equal 0, e.status
+      assert_equal '', output.string
+    ensure
+      $stdout = STDOUT
+    end
+  end
+
+  def test_exit_0_without_query
+    stream = stream_for ""
+    output = StringIO.new
+
+    begin
+      $stdout = output
+      FZF.new(%w[--exit-0], stream).start
+    rescue SystemExit => e
+      assert_equal 0, e.status
+      assert_equal '', output.string
+    ensure
+      $stdout = STDOUT
+    end
+  end
+
+  def test_ranking_overlap_match_regions
+    list = [
+      '1           3   4      2',
+      '1           2   3    4'
+    ]
+    assert_equal [
+      ['1           2   3    4',   [[0, 13], [16, 22]]],
+      ['1           3   4      2', [[0, 24], [12, 17]]],
+    ], FZF.sort(FZF::ExtendedFuzzyMatcher.new(nil).match(list, '12 34', '', ''))
+  end
 end