Merge pull request #104 from junegunn/add-with-nth

Add --with-nth option

.travis.yml

@@ -0,0 +1,9 @@
+language: ruby
+rvm:
+  - "1.8.7"
+  - "1.9.3"
+  - "2.0.0"
+  - "2.1.1"
+
+install: gem install curses minitest
+

README.md

@@ -5,8 +5,6 @@ fzf is a general-purpose fuzzy finder for your shell.
 
 ![](https://raw.github.com/junegunn/i/master/fzf.gif)
 
-([tmux integration!](https://cloud.githubusercontent.com/assets/700826/2593609/3ec13962-ba83-11e3-88d3-f9f95bd8a64b.gif))
-
 It was heavily inspired by [ctrlp.vim](https://github.com/kien/ctrlp.vim) and
 the likes.
 
@@ -26,14 +24,24 @@ git clone https://github.com/junegunn/fzf.git ~/.fzf
 ~/.fzf/install
 ```
 
+In case you don't have git installed:
+
+```sh
+mkdir -p ~/.fzf
+curl -L https://github.com/junegunn/fzf/archive/master.tar.gz |
+    tar xz --strip-components 1 -C ~/.fzf
+~/.fzf/install
+```
+
 The script will setup:
 
-- `fzf` executable
-- Key bindings (`CTRL-T`, `CTRL-R`, and `ALT-C`) for bash and zsh
-- Fuzzy auto-completion for bash
+- `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 bash or zsh, you have to manually place fzf executable in a
-directory included in `$PATH`. Key bindings are not yet supported.
+If you don't use any of the aforementioned shells, you have to manually place
+fzf executable in a directory included in `$PATH`. Key bindings and
+auto-completion will not be available in that case.
 
 ### Install as Vim plugin
 
@@ -43,8 +51,12 @@ Once you have cloned the repository, add the following line to your .vimrc.
 set rtp+=~/.fzf
 ```
 
-Or you may use any Vim plugin manager, such as
-[vim-plug](https://github.com/junegunn/vim-plug).
+Or you may use [vim-plug](https://github.com/junegunn/vim-plug) to manage fzf
+inside Vim:
+
+```vim
+Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': 'yes \| ./install' }
+```
 
 Usage
 -----
@@ -53,34 +65,39 @@ Usage
 usage: fzf [options]
 
   Search
-    -x, --extended       Extended-search mode
-    -e, --extended-exact Extended-search mode (exact match)
-    -i                   Case-insensitive match (default: smart-case match)
-    +i                   Case-sensitive match
-    -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)
+    -x, --extended        Extended-search mode
+    -e, --extended-exact  Extended-search mode (exact match)
+    -i                    Case-insensitive match (default: smart-case match)
+    +i                    Case-sensitive match
+    -n, --nth=N[,..]      Comma-separated list of field index expressions
+                          for limiting search scope. Each can be a non-zero
+                          integer or a range expression ([BEGIN]..[END])
+        --with-nth=N[,..] Transform the item using index expressions for search
+    -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.
+    -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
+    -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
+        --prompt=STR      Input prompt (default: '> ')
 
   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.
+    -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.
+        --print-query     Print query as the first line
 
   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_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
@@ -114,6 +131,7 @@ The following readline key bindings should also work as expected.
 
 - CTRL-A / CTRL-E
 - CTRL-B / CTRL-F
+- CTRL-H / CTRL-D
 - CTRL-W / CTRL-U / CTRL-Y
 - ALT-B / ALT-F
 
@@ -164,12 +182,6 @@ fd() {
   cd "$dir"
 }
 
-# fda - including hidden directories
-fda() {
-  local dir
-  dir=$(find ${1:-.} -type d 2> /dev/null | fzf +m) && cd "$dir"
-}
-
 # fh - repeat history
 fh() {
   eval $(([ -n "$ZSH_NAME" ] && fc -l 1 || history) | fzf +s | sed 's/ *[0-9]* *//')
@@ -179,41 +191,16 @@ fh() {
 fkill() {
   ps -ef | sed 1d | fzf -m | awk '{print $2}' | xargs kill -${1:-9}
 }
-
-# fbr - checkout git branch
-fbr() {
-  local branches branch
-  branches=$(git branch) &&
-  branch=$(echo "$branches" | fzf +s +m) &&
-  git checkout $(echo "$branch" | sed "s/.* //")
-}
-
-# fco - checkout git commit
-fco() {
-  local commits commit
-  commits=$(git log --pretty=oneline --abbrev-commit --reverse) &&
-  commit=$(echo "$commits" | fzf +s +m -e) &&
-  git checkout $(echo "$commit" | sed "s/ .*//")
-}
-
-# ftags - search ctags
-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")"
-}
 ```
 
+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.
-
-### bash/zsh
+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
@@ -223,7 +210,13 @@ 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%`).
 
-The source code can be found in `~/.fzf.bash` and in `~/.fzf.zsh`.
+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
 ---------------
@@ -282,6 +275,14 @@ ssh **<TAB>
 telnet **<TAB>
 ```
 
+#### Environment variables / Aliases
+
+```sh
+unset **<TAB>
+export **<TAB>
+unalias **<TAB>
+```
+
 #### Settings
 
 ```sh
@@ -301,7 +302,7 @@ TODO :smiley:
 Usage as Vim plugin
 -------------------
 
-(fzf is a command-line utility, naturally it is only accessible in terminal Vim)
+(Note: To use fzf in GVim, an external terminal emulator is required.)
 
 ### `:FZF[!]`
 
@@ -325,6 +326,22 @@ 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.
 
+In GVim, you need an external terminal emulator to start fzf with. `xterm`
+command is used by default, but you can customize it with `g:fzf_launcher`.
+
+```vim
+" This is the default. %s is replaced with fzf command
+let g:fzf_launcher = 'xterm -e bash -ic %s'
+
+" Use urxvt instead
+let g:fzf_launcher = 'urxvt -geometry 120x30 -e sh -c %s'
+```
+
+If you're running MacVim on OSX, I recommend you to use iTerm2 as the launcher.
+Refer to the [this wiki
+page](https://github.com/junegunn/fzf/wiki/fzf-with-MacVim-and-iTerm2) to see
+how to set up.
+
 ### `fzf#run([options])`
 
 For more advanced uses, you can call `fzf#run()` function which returns the list
@@ -332,15 +349,17 @@ 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`      | number/string | Use tmux split if possible with the given height (e.g. `20`, `50%`) |
+| 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%`) |
+| `launcher`      | string        | External terminal emulator to start fzf with (Only used in GVim)   |
 
 #### Examples
 
@@ -366,9 +385,10 @@ 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':    15
+\   'sink':       'colo',
+\   'options':    '+m',
+\   'tmux_width': 20,
+\   'launcher':   'xterm -geometry 20x30 -e bash -ic %s'
 \ })<CR>
 ```
 
@@ -377,25 +397,29 @@ handy mapping that selects an open buffer.
 
 ```vim
 " List of buffers
-function! g:buflist()
+function! BufList()
   redir => ls
   silent ls
   redir END
   return split(ls, '\n')
 endfunction
 
-function! g:bufopen(e)
+function! BufOpen(e)
   execute 'buffer '. matchstr(a:e, '^[ 0-9]*')
 endfunction
 
 nnoremap <silent> <Leader><Enter> :call fzf#run({
-\   'source':  g:buflist(),
-\   'sink':    function('g:bufopen'),
-\   'options': '+m +s',
-\   'tmux':    15
+\   'source':      reverse(BufList()),
+\   'sink':        function('BufOpen'),
+\   'options':     '+m',
+\   'tmux_height': '40%'
 \ })<CR>
 ```
 
+### Articles
+
+- [fzf+vim+tmux](http://junegunn.kr/2014/04/fzf+vim+tmux)
+
 Tips
 ----
 
@@ -428,6 +452,113 @@ This limit can be adjusted with `-s` option, or with the environment variable
 export FZF_DEFAULT_OPTS="--sort 20000"
 ```
 
+### 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
+}
+```
+
+### Using fzf with tmux splits
+
+It isn't too hard to write your own fzf-tmux combo like the default
+CTRL-T key binding. (Or is it?)
+
+```sh
+# This is a helper function that splits the current pane to start the given
+# command ($1) and sends its output back to the original pane with any number of
+# optional keys (shift; $*).
+fzf_tmux_helper() {
+  [ -n "$TMUX_PANE" ] || return
+  local cmd=$1
+  shift
+  tmux split-window -p 40 \
+    "bash -c \"\$(tmux send-keys -t $TMUX_PANE \"\$(source ~/.fzf.bash; $cmd)\" $*)\""
+}
+
+# This is the function we are going to run in the split pane.
+# - "find" to list the directories
+# - "sed" will escape spaces in the paths.
+# - "paste" will join the selected paths into a single line
+fzf_tmux_dir() {
+  fzf_tmux_helper \
+    'find * -path "*/\.*" -prune -o -type d -print 2> /dev/null |
+     fzf --multi |
+     sed "s/ /\\\\ /g" |
+     paste -sd" " -' Space
+}
+
+# Bind CTRL-X-CTRL-D to fzf_tmux_dir
+bind '"\C-x\C-d": "$(fzf_tmux_dir)\e\C-e"'
+```
+
+### 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.
+
+### Handling UTF-8 NFD paths on OSX
+
+Use iconv to convert NFD paths to NFC:
+
+```sh
+find . | iconv -f utf-8-mac -t utf8//ignore | fzf
+```
+
 License
 -------
 

Rakefile

@@ -6,3 +6,4 @@ Rake::TestTask.new(:test) do |test|
   test.verbose = true
 end
 
+task :default => :test

fzf

@@ -7,7 +7,7 @@
 #  / __/ / /_/ __/
 # /_/   /___/_/    Fuzzy finder for your shell
 #
-# Version: 0.8.3 (April 3, 2014)
+# Version: 0.8.8 (Nov 4, 2014)
 #
 # Author:  Junegunn Choi
 # URL:     https://github.com/junegunn/fzf
@@ -36,8 +36,13 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+begin
+  require 'curses'
+rescue LoadError
+  $stderr.puts 'curses gem is not installed. Try `gem install curses`.'
+  exit 1
+end
 require 'thread'
-require 'curses'
 require 'set'
 
 unless String.method_defined? :force_encoding
@@ -48,29 +53,55 @@ unless String.method_defined? :force_encoding
   end
 end
 
+class String
+  attr_accessor :orig
+
+  def tokenize delim, nth
+    unless delim
+      # AWK default
+      prefix_length = (index(/\S/) || 0) rescue 0
+      tokens = scan(/\S+\s*/) rescue []
+    else
+      prefix_length = 0
+      tokens = scan(delim) rescue []
+    end
+    nth.map { |n|
+      if n.begin == 0 && n.end == -1
+        [prefix_length, tokens.join]
+      elsif part = tokens[n]
+        [prefix_length + (tokens[0...(n.begin)] || []).join.length,
+         part.join]
+      end
+    }.compact
+  end
+end
+
 class FZF
   C = Curses
-  attr_reader :rxflag, :sort, :nth, :color, :black, :ansi256,
-              :mouse, :multi, :query, :select1, :exit0, :filter, :extended
+  attr_reader :rxflag, :sort, :nth, :color, :black, :ansi256, :reverse, :prompt,
+              :mouse, :multi, :query, :select1, :exit0, :filter, :extended,
+              :print_query, :with_nth
 
-  class AtomicVar
-    def initialize value
-      @value = value
-      @mutex = Mutex.new
-    end
+  def sync
+    @shr_mtx.synchronize { yield }
+  end
 
-    def get
-      @mutex.synchronize { @value }
-    end
+  def get name
+    sync { instance_variable_get name }
+  end
 
-    def set value = nil
-      @mutex.synchronize do
-        @value = block_given? ? yield(@value) : value
-      end
-    end
+  def geta(*names)
+    sync { names.map { |name| instance_variable_get name } }
+  end
 
-    def method_missing sym, *args, &blk
-      @mutex.synchronize { @value.send(sym, *args, &blk) }
+  def call(name, method, *args)
+    sync { instance_variable_get(name).send(method, *args) }
+  end
+
+  def set name, value = nil
+    sync do
+      instance_variable_set name,
+        (block_given? ? yield(instance_variable_get(name)) : value)
     end
   end
 
@@ -87,7 +118,12 @@ class FZF
     @exit0    = false
     @filter   = nil
     @nth      = nil
+    @with_nth = nil
     @delim    = nil
+    @reverse  = false
+    @prompt   = '> '
+    @shr_mtx  = Mutex.new
+    @print_query = false
 
     argv =
       if opts = ENV['FZF_DEFAULT_OPTS']
@@ -114,6 +150,8 @@ class FZF
       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
@@ -121,20 +159,24 @@ class FZF
       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
+        @query = query
       when /^-q(.*)$/, /^--query=(.*)$/
-        @query = AtomicVar.new($1)
+        @query = $1
       when '-f', '--filter'
         usage 1, 'query string required' unless query = argv.shift
         @filter = query
       when /^-f(.*)$/, /^--filter=(.*)$/
         @filter = $1
       when '-n', '--nth'
-        usage 1, 'field number required' unless nth = argv.shift
-        usage 1, 'invalid field number' if nth.to_i == 0
+        usage 1, 'field expression required' unless nth = argv.shift
         @nth = parse_nth nth
-      when /^-n([0-9,-]+)$/, /^--nth=([0-9,-]+)$/
+      when /^-n([0-9,-\.]+)$/, /^--nth=([0-9,-\.]+)$/
         @nth = parse_nth $1
+      when '--with-nth'
+        usage 1, 'field expression required' unless nth = argv.shift
+        @with_nth = parse_nth nth
+      when /^--with-nth=([0-9,-\.]+)$/
+        @with_nth = parse_nth $1
       when '-d', '--delimiter'
         usage 1, 'delimiter required' unless delim = argv.shift
         @delim = FZF.build_delim_regex delim
@@ -146,6 +188,13 @@ class FZF
         @sort = sort.to_i
       when /^-s([0-9]+)$/, /^--sort=([0-9]+)$/
         @sort = $1.to_i
+      when '--prompt'
+        usage 1, 'prompt string required' unless prompt = argv.shift
+        @prompt = prompt
+      when /^--prompt=(.*)$/
+        @prompt = $1
+      when '--print-query'             then @print_query = true
+      when '--no-print-query'          then @print_query = false
       when '-e', '--extended-exact'    then @extended = :exact
       when '+e', '--no-extended-exact' then @extended = nil
       else
@@ -153,34 +202,50 @@ class FZF
       end
     end
 
-    @source   = source.clone
-    @mtx      = Mutex.new
-    @cv       = ConditionVariable.new
-    @events   = {}
-    @new      = []
-    @queue    = Queue.new
-    @pending  = nil
+    @source  = source.clone
+    @evt_mtx = Mutex.new
+    @cv      = ConditionVariable.new
+    @events  = {}
+    @new     = []
+    @queue   = Queue.new
+    @pending = nil
+    @rev_dir = @reverse ? -1 : 1
+    @stdout  = $stdout.clone
 
     unless @filter
-      @query  ||= AtomicVar.new('')
-      @cursor_x = AtomicVar.new(@query.length)
-      @matches  = AtomicVar.new([])
-      @count    = AtomicVar.new(0)
-      @vcursor  = AtomicVar.new(0)
-      @vcursors = AtomicVar.new(Set.new)
-      @spinner  = AtomicVar.new('-\|/-\|/'.split(//))
-      @selects  = AtomicVar.new({}) # ordered >= 1.9
-      @main     = Thread.current
-      @plcount  = 0
+      # Shared variables: needs protection
+      @query   ||= ''
+      @matches   = []
+      @count     = 0
+      @xcur      = @query.length
+      @ycur      = 0
+      @yoff      = 0
+      @dirty     = Set.new
+      @spinner   = '-\|/-\|/'.split(//)
+      @selects   = {} # 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
+    ranges = nth.split(',').map { |expr|
+      x = proc { usage 1, "invalid field expression: #{expr}" }
+      first, second = expr.split('..', 2)
+      x.call if !first.empty? && first.to_i == 0 ||
+        second && !second.empty? && (second.to_i == 0 || second.include?('.'))
+
+      first  = first.empty? ? 1 : first.to_i
+      second = case second
+               when nil then first
+               when ''  then -1
+               else second.to_i
+               end
+
+      Range.new(*[first, second].map { |e| e > 0 ? e - 1 : e })
     }
+    ranges == [0..-1] ? nil : ranges
   end
 
   def FZF.build_delim_regex delim
@@ -188,21 +253,28 @@ class FZF
     Regexp.compile "(?:.*?#{delim})|(?:.+?$)"
   end
 
+  def burp string, orig = nil
+    @stdout.puts(orig || string.orig || string)
+  end
+
   def start
     if @filter
       start_reader.join
       filter_list @new
     else
       start_reader
-      emit(:key) { q = @query.get; [q, q.length] } unless empty = @query.empty?
+      query = get(:@query)
+      emit(:key) { [query, query.length] } unless empty = query.empty?
       if @select1 || @exit0
         start_search do |loaded, matches|
-          len = empty ? @count.get : matches.length
+          len = empty ? get(:@count) : matches.length
           if loaded
             if @select1 && len == 1
-              puts empty ? matches.first : matches.first.first
+              puts @query if @print_query
+              burp(empty ? matches.first : matches.first.first)
               exit 0
             elsif @exit0 && len == 0
+              puts @query if @print_query
               exit 0
             end
           end
@@ -223,6 +295,7 @@ class FZF
   end
 
   def filter_list list
+    puts @filter if @print_query
     matches = matcher.match(list, @filter, '', '')
     if @sort && matches.length <= @sort
       matches = FZF.sort(matches)
@@ -274,200 +347,99 @@ class FZF
     $stderr.puts %[usage: fzf [options]
 
   Search
-    -x, --extended       Extended-search mode
-    -e, --extended-exact Extended-search mode (exact match)
-    -i                   Case-insensitive match (default: smart-case match)
-    +i                   Case-sensitive match
-    -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)
+    -x, --extended        Extended-search mode
+    -e, --extended-exact  Extended-search mode (exact match)
+    -i                    Case-insensitive match (default: smart-case match)
+    +i                    Case-sensitive match
+    -n, --nth=N[,..]      Comma-separated list of field index expressions
+                          for limiting search scope. Each can be a non-zero
+                          integer or a range expression ([BEGIN]..[END])
+        --with-nth=N[,..] Transform the item using index expressions for search
+    -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.
+    -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
+    -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
+        --prompt=STR      Input prompt (default: '> ')
 
   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.
+    -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.
+        --print-query     Print query as the first line
 
   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
-
-  case RUBY_PLATFORM
-  when /darwin/
-    module UConv
-      CHOSUNG   = 0x1100
-      JUNGSUNG  = 0x1161
-      JONGSUNG  = 0x11A7
-      CHOSUNGS  = 19
-      JUNGSUNGS = 21
-      JONGSUNGS = 28
-      JJCOUNT   = JUNGSUNGS * JONGSUNGS
-      NFC_BEGIN = 0xAC00
-      NFC_END   = NFC_BEGIN + CHOSUNGS * JUNGSUNGS * JONGSUNGS
-
-      def self.nfd str
-        str.split(//).map do |c|
-          cp = c.ord
-          if cp >= NFC_BEGIN && cp < NFC_END
-            chr = ''
-            idx  = cp - NFC_BEGIN
-            cho  = CHOSUNG  + idx / JJCOUNT
-            jung = JUNGSUNG + (idx % JJCOUNT) / JONGSUNGS
-            jong = JONGSUNG + idx % JONGSUNGS
-            chr << cho << jung
-            chr << jong if jong != JONGSUNG
-            chr
-          else
-            c
-          end
-        end
-      end
-
-      def self.to_nfc arr
-        [NFC_BEGIN + arr[0] * JJCOUNT +
-         (arr[1] || 0) * JONGSUNGS +
-         (arr[2] || 0)].pack('U*')
-      end
-
-      if String.method_defined?(:each_char)
-        def self.split str
-          str.each_char.to_a
-        end
-      else
-        def self.split str
-          str.split('')
-        end
-      end
-
-      def self.nfc str, offsets = []
-        ret  = ''
-        omap = []
-        pend = []
-        split(str).each_with_index do |c, idx|
-          cp =
-            begin
-              c.ord
-            rescue Exception
-              next
-            end
-          omap << ret.length
-          unless pend.empty?
-            if cp >= JUNGSUNG && cp < JUNGSUNG + JUNGSUNGS
-              pend << cp - JUNGSUNG
-              next
-            elsif cp >= JONGSUNG && cp < JONGSUNG + JONGSUNGS
-              pend << cp - JONGSUNG
-              next
-            else
-              omap[-1] = omap[-1] + 1
-              ret << to_nfc(pend)
-              pend.clear
-            end
-          end
-          if cp >= CHOSUNG && cp < CHOSUNG + CHOSUNGS
-            pend << cp - CHOSUNG
-          else
-            ret << c
-          end
-        end
-        ret << to_nfc(pend) unless pend.empty?
-        return [ret,
-                offsets.map { |pair|
-                  b, e = pair
-                  [omap[b] || 0, omap[e] || ((omap.last || 0) + 1)] }]
-      end
-    end
-
-    def convert_item item
-      UConv.nfc(*item)
-    end
-
-    class Matcher
-      def query_chars q
-        UConv.nfd(q)
-      end
-
-      def sanitize q
-        UConv.nfd(q).join
-      end
-    end
-  else
-    def convert_item item
-      item
-    end
-
-    class Matcher
-      def query_chars q
-        q.split(//)
-      end
-
-      def sanitize q
-        q
-      end
-    end
+    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
 
   def emit event
-    @mtx.synchronize do
+    @evt_mtx.synchronize do
       @events[event] = yield
       @cv.broadcast
     end
   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
     end if str
   end
   def addstr_safe str
-    C.addstr str.gsub("\0", '')
+    str = str.gsub("\0", '') rescue str
+    C.addstr str
   end
 
   def print_input
     C.setpos cursor_y, 0
     C.clrtoeol
-    cprint '> ', color(:prompt, true)
+    cprint @prompt, color(:prompt, true)
     C.attron(C::A_BOLD) do
-      C.addstr @query.get
+      C.addstr get(:@query)
     end
   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
-        cprint spinner, color(:spinner, true)
+      if spin_char = call(:@spinner, :first)
+        cprint spin_char, color(:spinner, true)
         ' '
       else
         '  '
       end
     C.attron color(:info, false) do
-      C.addstr "#{prefix}#{@matches.length}/#{@count.get}"
-      if (selected = @selects.length) > 0
-        C.addstr " (#{selected})"
+      sync do
+        C.addstr "#{prefix}#{@matches.length}/#{@count}"
+        if (selected = @selects.length) > 0
+          C.addstr " (#{selected})"
+        end
       end
       C.addstr msg if msg
     end
   end
 
   def refresh
-    C.setpos cursor_y, 2 + width(@query[0, @cursor_x.get])
+    query, xcur = geta(:@query, :@xcur)
+    C.setpos cursor_y, @prompt.length + width(query[0, xcur])
     C.refresh
   end
 
@@ -550,7 +522,7 @@ class FZF
       width = width str
       diff  = 0
       while width > len
-        width -= (left ? str[0, 1] : str[-1, 1]) =~ @@wrx ? 2 : 1
+        width -= ((left ? str[0, 1] : str[-1, 1]) =~ @@wrx ? 2 : 1) rescue 1
         str    = left ? str[1..-1] : str[0...-1]
         diff  += 1
       end
@@ -584,7 +556,6 @@ class FZF
   end
 
   def init_screen
-    @stdout = $stdout.clone
     $stdout.reopen($stderr)
 
     C.init_screen
@@ -659,14 +630,28 @@ class FZF
       end
 
     Thread.new do
-      while line = stream.gets
-        emit(:new) { @new << line.chomp }
+      if @with_nth
+        while line = stream.gets
+          emit(:new) { @new << transform(line) }
+        end
+      else
+        while line = stream.gets
+          emit(:new) { @new << line.chomp }
+        end
       end
       emit(:loaded) { true }
       @spinner.clear if @spinner
     end
   end
 
+  def transform line
+    line = line.chomp
+    mut = (line =~ / $/ ? line : line + ' ').
+      tokenize(@delim, @with_nth).map { |e| e.last }.join('').sub(/ *$/, '')
+    mut.orig = line
+    mut
+  end
+
   def start_search &callback
     Thread.new do
       lists   = []
@@ -677,12 +662,12 @@ class FZF
 
       begin
         while true
-          @mtx.synchronize do
+          @evt_mtx.synchronize do
             while true
               events.merge! @events
 
               if @events.empty? # No new events
-                @cv.wait @mtx
+                @cv.wait @evt_mtx
                 next
               end
               @events.clear
@@ -691,8 +676,8 @@ class FZF
 
             if events[:new]
               lists << @new
-              @count.set { |c| c + @new.length }
-              @spinner.set { |spinner|
+              set(:@count) { |c| c + @new.length }
+              set(:@spinner) { |spinner|
                 if e = spinner.shift
                   spinner.push e
                 end; spinner
@@ -716,17 +701,20 @@ class FZF
               cnt   = 0
               lists.each do |list|
                 cnt += list.length
-                skip = @mtx.synchronize { @events[:key] }
+                skip = @evt_mtx.synchronize { @events[:key] }
                 break if skip
 
-                if !empty && (progress = 100 * cnt / @count.get) < 100 && Time.now - started_at > 0.5
+                if !empty && (progress = 100 * cnt / get(:@count)) < 100 && Time.now - started_at > 0.5
                   render { print_info " (#{progress}%)" }
                 end
 
                 found.concat(q.empty? ? list :
                              matcher.match(list, q, q[0, cx], q[cx..-1]))
               end
-              next if skip
+              if skip
+                sleep 0.1
+                next
+              end
               matches = @sort ? found : found.reverse
               if !empty && @sort && matches.length <= @sort
                 matches = FZF.sort(matches)
@@ -735,7 +723,7 @@ class FZF
             end
 
             # Atomic update
-            @matches.set matches
+            set(:@matches, matches)
           end#new_search
 
           callback = nil if callback &&
@@ -754,38 +742,67 @@ class FZF
   end
 
   def pick
-    items = @matches[0, max_items]
-    curr = [0, [@vcursor.get, items.length - 1].min].max
-    [*items.fetch(curr, [])][0]
+    sync do
+      item = @matches[@ycur]
+      item.is_a?(Array) ? item[0] : item
+    end
+  end
+
+  def constrain offset, cursor, count, height
+    original = [offset, cursor]
+    diffpos = cursor - offset
+
+    # Constrain cursor
+    cursor = [0, [cursor, count - 1].min].max
+
+    # Ceil
+    if cursor > offset + (height - 1)
+      offset = cursor - (height - 1)
+    # Floor
+    elsif offset > cursor
+      offset = cursor
+    end
+
+    # Adjustment
+    if count - offset < height
+      offset = [0, count - height].max
+      cursor = [0, [offset + diffpos, count - 1].min].max
+    end
+
+    [[offset, cursor] != original, offset, cursor]
   end
 
   def update_list wipe
     render do
-      items = @matches[0, max_items]
+      pos, items = sync {
+        changed, @yoff, @ycur =
+            constrain(@yoff, @ycur, @matches.length, max_items)
+        wipe ||= changed
+
+        [@ycur - @yoff, @matches[@yoff, max_items]]
+      }
 
       # 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
       @plcount = items.length
 
-      maxc    = C.cols - 3
-      vcursor = @vcursor.set { |v| [0, [v, items.length - 1].min].max }
-      cleanse = Set[vcursor]
-      @vcursors.set { |vs|
-        cleanse.merge vs
+      dirty = Set[pos]
+      set(:@dirty) do |vs|
+        dirty.merge vs
         Set.new
-      }
+      end
       items.each_with_index do |item, idx|
-        next unless wipe || cleanse.include?(idx)
-        row           = cursor_y - idx - 2
-        chosen        = idx == vcursor
+        next unless wipe || dirty.include?(idx)
+        row           = cursor_y(idx + 2)
+        chosen        = idx == pos
         selected      = @selects.include?([*item][0])
-        line, offsets = convert_item item
-        tokens        = format line, maxc, offsets
+        line, offsets = item
+        tokens        = format line, C.cols - 3, offsets
         print_item row, tokens, chosen, selected
       end
       print_info
@@ -814,7 +831,10 @@ class FZF
   end
 
   def vselect &prc
-    @vcursor.set { |v| @vcursors << v; prc.call v }
+    sync do
+      @dirty << @ycur - @yoff
+      @ycur = prc.call @ycur
+    end
     update_list false
   end
 
@@ -871,7 +891,13 @@ class FZF
   end
 
   def get_input actions
-    @tty ||= IO.open(IO.sysopen('/dev/tty'), 'r')
+    @tty ||=
+      begin
+        require 'io/console'
+        IO.console
+      rescue LoadError
+        IO.open(IO.sysopen('/dev/tty'), 'r')
+      end
 
     if pending = @pending
       @pending = nil
@@ -903,7 +929,7 @@ class FZF
 
       ord =
         case read_nb(1, :esc)
-        when 91
+        when 91, 79
           case read_nb(1, nil)
           when 68 then ctrl(:b)
           when 67 then ctrl(:f)
@@ -918,6 +944,8 @@ class FZF
             case read_nbs
             when [59, 50, 68] then ctrl(:a)
             when [59, 50, 67] then ctrl(:e)
+            when [59, 53, 68] then :alt_b
+            when [59, 53, 67] then :alt_f
             when [126]        then ctrl(:a)
             end
           when 52 then read_nb; ctrl(:e)
@@ -979,7 +1007,7 @@ class FZF
   def start_loop
     got = nil
     begin
-      input = @query.get.dup
+      input  = call(:@query, :dup)
       cursor = input.length
       yanked = ''
       mouse_event = MouseEvent.new
@@ -988,7 +1016,13 @@ class FZF
       }
       actions = {
         :esc     => proc { exit 1 },
-        ctrl(:d) => proc { exit 1 if input.empty? },
+        ctrl(:d) => proc {
+          if input.empty?
+            exit 1
+          elsif cursor < input.length
+            input = input[0...cursor] + input[(cursor + 1)..-1]
+          end
+        },
         ctrl(:m) => proc {
           got = pick
           exit 0
@@ -1000,8 +1034,8 @@ class FZF
         },
         ctrl(:a) => proc { cursor = 0; nil },
         ctrl(:e) => proc { cursor = input.length; nil },
-        ctrl(:j) => proc { vselect { |v| v - 1 } },
-        ctrl(:k) => proc { vselect { |v| v + 1 } },
+        ctrl(:j) => proc { vselect { |v| v - @rev_dir } },
+        ctrl(:k) => proc { vselect { |v| v + @rev_dir } },
         ctrl(:w) => proc {
           pcursor = cursor
           backword.call
@@ -1012,26 +1046,28 @@ class FZF
         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
+            sync do
+              if @selects.has_key? sel
+                @selects.delete sel
+              else
+                @selects[sel] = sel.orig
+              end
             end
             vselect { |v| v + case o
                               when :stab then 1
                               when :sclick then 0
                               else -1
-                              end }
+                              end * @rev_dir }
           end
         },
         ctrl(:b) => proc { cursor = [0, cursor - 1].max; 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 {
+        :del     => proc { input[cursor] = '' if input.length > cursor },
+        :pgup    => proc { vselect { |v| v + @rev_dir * (max_items - 1) } },
+        :pgdn    => proc { vselect { |v| v - @rev_dir * (max_items - 1) } },
+        :alt_b   => proc { backword.call; nil },
+        :alt_f   => proc {
           cursor += (input[cursor..-1].index(/(\S\s)|(.$)/) || -1) + 1
           nil
         },
@@ -1045,10 +1081,11 @@ class FZF
             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
+              y = @reverse ? (C.lines - 1 - y) : y
+              if y == C.lines - 1
+                cursor = [0, [input.length, x - @prompt.length].min].max
               elsif x > 1 && y <= max_items
-                tv = max_items - y - 1
+                tv = get(:@yoff) + max_items - y - 1
 
                 case event
                 when :click
@@ -1066,6 +1103,7 @@ class FZF
               actions[ctrl(:i)].call(:sclick) if shift
               actions[ctrl(diff > 0 ? :j : :k)].call
             end
+            nil
           end
         }
       }
@@ -1076,24 +1114,26 @@ class FZF
       actions[ctrl(:q)] = actions[ctrl(:g)] = actions[ctrl(:c)] = actions[:esc]
 
       while true
-        @cursor_x.set cursor
+        set(:@xcur, cursor)
         render { print_input }
 
         if key = get_input(actions)
           upd = actions.fetch(key, actions[:default]).call(key)
 
           # Dispatch key event
-          emit(:key) { [@query.set(input.dup), cursor] } if upd
+          emit(:key) { [set(:@query, input.dup), cursor] } if upd
         end
       end
     ensure
       C.close_screen
+      q, selects = geta(:@query, :@selects)
+      @stdout.puts q if @print_query
       if got
-        if @selects.empty?
-          @stdout.puts got
+        if selects.empty?
+          burp got
         else
-          @selects.each do |sel, _|
-            @stdout.puts sel
+          selects.each do |sel, orig|
+            burp sel, orig
           end
         end
       end
@@ -1112,32 +1152,21 @@ class FZF
     end
 
     def initialize nth, delim
-      @nth = nth && nth.map { |n| n > 0 ? n - 1 : n }
+      @nth = nth
       @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
+      @tokens_cache[str] ||= str.tokenize(@delim, @nth)
     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)
+        tokenize(str).each do |pair|
+          prefix_length, token = pair
+          if md = token.match(pat) rescue nil
+            return MatchData.new(md.offset(0).map { |o| o + prefix_length })
           end
         end
         nil
@@ -1168,7 +1197,7 @@ class FZF
     def fuzzy_regex q
       @regexp[q] ||= begin
         q = q.downcase if @rxflag == Regexp::IGNORECASE
-        Regexp.new(query_chars(q).inject('') { |sum, e|
+        Regexp.new(q.split(//).inject('') { |sum, e|
           e = Regexp.escape e
           sum << (e.length > 1 ? "(?:#{e}).*?" :  # FIXME: not equivalent
                                  "#{e}[^#{e}]*?")
@@ -1226,7 +1255,7 @@ class FZF
             when ''
               nil
             when /^\^(.*)\$$/
-              Regexp.new('^' << sanitize(Regexp.escape($1)) << '$', rxflag_for(w))
+              Regexp.new('^' << Regexp.escape($1) << '$', rxflag_for(w))
             when /^'/
               if @mode == :fuzzy && w.length > 1
                 exact_regex w[1..-1]
@@ -1235,10 +1264,10 @@ class FZF
               end
             when /^\^/
               w.length > 1 ?
-                Regexp.new('^' << sanitize(Regexp.escape(w[1..-1])), rxflag_for(w)) : nil
+                Regexp.new('^' << Regexp.escape(w[1..-1]), rxflag_for(w)) : nil
             when /\$$/
               w.length > 1 ?
-                Regexp.new(sanitize(Regexp.escape(w[0..-2])) << '$', rxflag_for(w)) : nil
+                Regexp.new(Regexp.escape(w[0..-2]) << '$', rxflag_for(w)) : nil
             else
               @mode == :fuzzy ? fuzzy_regex(w) : exact_regex(w)
             end, invert ]
@@ -1246,7 +1275,7 @@ class FZF
     end
 
     def exact_regex w
-      Regexp.new(sanitize(Regexp.escape(w)), rxflag_for(w))
+      Regexp.new(Regexp.escape(w), rxflag_for(w))
     end
 
     def match list, q, prefix, suffix

fzf-completion.bash

@@ -8,12 +8,35 @@
 # - $FZF_COMPLETION_TRIGGER (default: '**')
 # - $FZF_COMPLETION_OPTS    (default: empty)
 
+_fzf_orig_completion_filter() {
+  sed 's/.*-F *\([^ ]*\).* \([^ ]*\)$/export _fzf_orig_completion_\2=\1;/' |
+  sed 's/[^a-z0-9_= ;]/_/g'
+}
+
 _fzf_opts_completion() {
   local cur prev opts
   COMPREPLY=()
   cur="${COMP_WORDS[COMP_CWORD]}"
   prev="${COMP_WORDS[COMP_CWORD-1]}"
-  opts="-m --multi -x --extended -s --sort +s +i +c --no-color"
+  opts="
+    -x --extended
+    -e --extended-exact
+    -i +i
+    -n --nth
+    -d --delimiter
+    -s --sort +s
+    -m --multi
+    --no-mouse
+    +c --no-color
+    +2 --no-256
+    --black
+    --reverse
+    --prompt
+    -q --query
+    -1 --select-1
+    -0 --exit-0
+    -f --filter
+    --print-query"
 
   case "${prev}" in
   --sort|-s)
@@ -30,8 +53,9 @@ _fzf_opts_completion() {
   return 0
 }
 
-_fzf_generic_completion() {
-  local cur base dir leftover matches trigger
+_fzf_path_completion() {
+  local cur base dir leftover matches trigger cmd orig
+  cmd=$(echo ${COMP_WORDS[0]} | sed 's/[^a-z0-9_=]/_/g')
   COMPREPLY=()
   trigger=${FZF_COMPLETION_TRIGGER:-**}
   cur="${COMP_WORDS[COMP_CWORD]}"
@@ -46,7 +70,7 @@ _fzf_generic_completion() {
         leftover=${leftover/#\/}
         [ "$dir" = './' ] && dir=''
         tput sc
-        matches=$(find "$dir"* $1 2> /dev/null | fzf $FZF_COMPLETION_OPTS $2 -q "$leftover" | while read item; do
+        matches=$(find -L "$dir"* $1 2> /dev/null | fzf $FZF_COMPLETION_OPTS $2 -q "$leftover" | while read item; do
           printf '%q ' "$item"
         done)
         matches=${matches% }
@@ -61,25 +85,63 @@ _fzf_generic_completion() {
       dir=$(dirname "$dir")
       [[ "$dir" =~ /$ ]] || dir="$dir"/
     done
+  else
+    shift
+    shift
+    orig=$(eval "echo \$_fzf_orig_completion_$cmd")
+    [ -n "$orig" ] && type "$orig" > /dev/null 2>&1 && $orig "$@"
+  fi
+}
+
+_fzf_list_completion() {
+  local cur selected trigger cmd src ret
+  read -r src
+  cmd=$(echo ${COMP_WORDS[0]} | sed 's/[^a-z0-9_=]/_/g')
+  trigger=${FZF_COMPLETION_TRIGGER:-**}
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  if [[ ${cur} == *"$trigger" ]]; then
+    cur=${cur:0:${#cur}-${#trigger}}
+
+    tput sc
+    selected=$(eval "$src | fzf $FZF_COMPLETION_OPTS $1 -q '$cur'" | tr '\n' ' ')
+    selected=${selected% }
+    tput rc
+
+    if [ -n "$selected" ]; then
+      COMPREPLY=("$selected")
+      return 0
+    fi
+  else
+    shift
+    orig=$(eval "echo \$_fzf_orig_completion_$cmd")
+    if [ -n "$orig" ] && type "$orig" > /dev/null; then
+      $orig "$@"
+    elif [ -n "$_fzf_completion_loader" ]; then
+      _completion_loader "$@"
+      ret=$?
+      eval $(complete | \grep "\-F.* $cmd$" | _fzf_orig_completion_filter)
+      source $BASH_SOURCE
+      return $ret
+    fi
   fi
 }
 
 _fzf_all_completion() {
-  _fzf_generic_completion \
+  _fzf_path_completion \
     "-name .git -prune -o -name .svn -prune -o -type d -print -o -type f -print -o -type l -print" \
-    "-m"
+    "-m" "$@"
 }
 
 _fzf_file_completion() {
-  _fzf_generic_completion \
+  _fzf_path_completion \
     "-name .git -prune -o -name .svn -prune -o -type f -print -o -type l -print" \
-    "-m"
+    "-m" "$@"
 }
 
 _fzf_dir_completion() {
-  _fzf_generic_completion \
+  _fzf_path_completion \
     "-name .git -prune -o -name .svn -prune -o -type d -print" \
-    ""
+    "" "$@"
 }
 
 _fzf_kill_completion() {
@@ -97,64 +159,69 @@ _fzf_kill_completion() {
 }
 
 _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_list_completion '+m' "$@" << "EOF"
+  \grep -v '^\s*\(#\|$\)' /etc/hosts | awk '{if (length($2) > 0) {print $2}}' | sort -u
+EOF
 }
 
 _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
+  _fzf_list_completion '+m' "$@" << "EOF"
+    cat <(cat ~/.ssh/config /etc/ssh/ssh_config 2> /dev/null | \grep -i ^host | \grep -v '*') <(\grep -v '^\s*\(#\|$\)' /etc/hosts) | awk '{print $2}' | sort -u
+EOF
 }
 
+_fzf_env_var_completion() {
+  _fzf_list_completion '-m' "$@" << "EOF"
+  declare -xp | sed 's/=.*//' | sed 's/.* //'
+EOF
+}
+
+_fzf_alias_completion() {
+  _fzf_list_completion '-m' "$@" << "EOF"
+  alias | sed 's/=.*//' | sed 's/.* //'
+EOF
+}
+
+# fzf options
 complete -F _fzf_opts_completion fzf
 
+d_cmds="cd pushd rmdir"
+f_cmds="
+  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"
+a_cmds="
+  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"
+x_cmds="kill ssh telnet unset unalias export"
+
+# Preserve existing completion
+if [ "$_fzf_completion_loaded" != '0.8.6-1' ]; then
+  # Really wish I could use associative array but OSX comes with bash 3.2 :(
+  eval $(complete | \grep '\-F' | \grep -v _fzf_ |
+    \grep -E " ($(echo $d_cmds $f_cmds $a_cmds $x_cmds | sed 's/ /|/g' | sed 's/+/\\+/g'))$" | _fzf_orig_completion_filter)
+  export _fzf_completion_loaded=0.8.6-1
+fi
+
+if type _completion_loader > /dev/null 2>&1; then
+  _fzf_completion_loader=1
+fi
+
 # Directory
-for cmd in "cd pushd rmdir"; do
+for cmd in $d_cmds; 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
+for cmd in $f_cmds; 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
+for cmd in $a_cmds; do
   complete -F _fzf_all_completion -o default -o bashdefault $cmd
 done
 
@@ -165,3 +232,9 @@ complete -F _fzf_kill_completion -o nospace -o default -o bashdefault kill
 complete -F _fzf_ssh_completion -o default -o bashdefault ssh
 complete -F _fzf_telnet_completion -o default -o bashdefault telnet
 
+# Environment variables / Aliases
+complete -F _fzf_env_var_completion -o default -o bashdefault unset
+complete -F _fzf_env_var_completion -o default -o bashdefault export
+complete -F _fzf_alias_completion -o default -o bashdefault unalias
+
+unset cmd d_cmds f_cmds a_cmds x_cmds

fzf.gemspec

@@ -1,7 +1,7 @@
 # coding: utf-8
 Gem::Specification.new do |spec|
   spec.name          = 'fzf'
-  spec.version       = '0.8.3'
+  spec.version       = '0.8.4'
   spec.authors       = ['Junegunn Choi']
   spec.email         = ['junegunn.c@gmail.com']
   spec.description   = %q{Fuzzy finder for your shell}

install

@@ -12,10 +12,9 @@ if [ $? -ne 0 ]; then
 fi
 
 # System ruby is preferred
-curses_check="begin; require 'curses'; rescue Exception; exit 1; end"
 system_ruby=/usr/bin/ruby
 if [ -x $system_ruby -a $system_ruby != "$ruby" ]; then
-  $system_ruby --disable-gems -e "$curses_check" 2> /dev/null
+  $system_ruby --disable-gems -rcurses -e0 2> /dev/null
   [ $? -eq 0 ] && ruby=$system_ruby
 fi
 
@@ -23,13 +22,17 @@ echo "OK ($ruby)"
 
 # Curses-support
 echo -n "Checking Curses support ... "
-"$ruby" -e "$curses_check"
+"$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 (( EUID )); then
+    /usr/bin/env gem install curses --user-install
+  else
+    /usr/bin/env gem install curses
+  fi
   if [ $? -ne 0 ]; then
     echo
     echo "Failed to install 'curses' gem."
@@ -45,7 +48,7 @@ echo -n "Checking Ruby version ... "
 "$ruby" -e 'exit RUBY_VERSION >= "1.9"'
 if [ $? -eq 0 ]; then
   echo ">= 1.9"
-  "$ruby" --disable-gems -e "$curses_check"
+  "$ruby" --disable-gems -rcurses -e0 2> /dev/null
   if [ $? -eq 0 ]; then
     fzf_cmd="$ruby --disable-gems $fzf_base/fzf"
   else
@@ -73,7 +76,7 @@ for shell in bash zsh; do
   echo -n "Generate ~/.fzf.$shell ... "
   src=~/.fzf.${shell}
 
-  fzf_completion="source $fzf_base/fzf-completion.${shell}"
+  fzf_completion="[[ \$- =~ i ]] && source $fzf_base/fzf-completion.${shell}"
   if [ $auto_completion -ne 0 ]; then
     fzf_completion="# $fzf_completion"
   fi
@@ -89,7 +92,7 @@ export -f fzf > /dev/null
 
 # Auto-completion
 # ---------------
-[[ \$- =~ i ]] && $fzf_completion
+$fzf_completion
 
 EOF
 
@@ -99,7 +102,7 @@ EOF
 # Key bindings
 # ------------
 __fsel() {
-  find * -path '*/\.*' -prune \
+  command find * -path '*/\.*' -prune \
     -o -type f -print \
     -o -type d -print \
     -o -type l -print 2> /dev/null | fzf -m | while read item; do
@@ -123,13 +126,13 @@ __fsel_tmux() {
 
 __fcd() {
   local dir
-  dir=$(find ${1:-*} -path '*/\.*' -prune -o -type d -print 2> /dev/null | fzf +m) && printf 'cd %q' "$dir"
+  dir=$(command find -L ${1:-*} -path '*/\.*' -prune -o -type d -print 2> /dev/null | fzf +m) && printf 'cd %q' "$dir"
 }
 
 __use_tmux=0
 [ -n "$TMUX_PANE" -a ${FZF_TMUX:-1} -ne 0 -a ${LINES:-40} -gt 15 ] && __use_tmux=1
 
-if [ -z "$(set -o | grep '^vi.*on')" ]; then
+if [ -z "$(set -o | \grep '^vi.*on')" ]; then
   # Required to refresh the prompt after fzf
   bind '"\er": redraw-current-line'
 
@@ -137,11 +140,11 @@ if [ -z "$(set -o | grep '^vi.*on')" ]; then
   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$(__fsel)\e\C-e\C-y\C-a\C-y\ey\C-h\C-e\er"'
+    bind '"\C-t": " \C-u \C-a\C-k$(__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$(HISTTIMEFORMAT= history | fzf +s | sed \"s/ *[0-9]* *//\")\e\C-e\er"'
+  bind '"\C-r": " \C-e\C-u$(HISTTIMEFORMAT= history | fzf +s +m -n2..,.. | 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"'
@@ -154,14 +157,17 @@ else
   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$a \C-x\C-r"'
+    bind '"\C-t": "\e$a \eddi$(__fsel)\C-x\C-e\e0Px$a \C-x\C-r\exa "'
   fi
+  bind -m vi-command '"\C-t": "i\C-t"'
 
   # 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"'
+  bind '"\C-r": "\eddi$(HISTTIMEFORMAT= history | fzf +s +m -n2..,.. | sed \"s/ *[0-9]* *//\")\C-x\C-e\e$a\C-x\C-r"'
+  bind -m vi-command '"\C-r": "i\C-r"'
 
   # ALT-C - cd into the selected directory
   bind '"\ec": "\eddi$(__fcd)\C-x\C-e\C-x\C-r\C-m"'
+  bind -m vi-command '"\ec": "i\ec"'
 fi
 
 unset __use_tmux
@@ -175,7 +181,7 @@ EOFZF
 # CTRL-T - Paste the selected file path(s) into the command line
 __fsel() {
   set -o nonomatch
-  find * -path '*/\.*' -prune \
+  command find * -path '*/\.*' -prune \
     -o -type f -print \
     -o -type d -print \
     -o -type l -print 2> /dev/null | fzf -m | while read item; do
@@ -199,7 +205,7 @@ if [ -n "$TMUX_PANE" -a ${FZF_TMUX:-1} -ne 0 -a ${LINES:-40} -gt 15 ]; then
   }
 else
   fzf-file-widget() {
-    LBUFFER="${LBUFFER%% #}$(__fsel)"
+    LBUFFER="${LBUFFER}$(__fsel)"
     zle redisplay
   }
 fi
@@ -208,7 +214,7 @@ bindkey '^T' fzf-file-widget
 
 # ALT-C - cd into the selected directory
 fzf-cd-widget() {
-  cd "${$(set -o nonomatch; find * -path '*/\.*' -prune \
+  cd "${$(set -o nonomatch; command find -L * -path '*/\.*' -prune \
           -o -type d -print 2> /dev/null | fzf):-.}"
   zle reset-prompt
 }
@@ -217,7 +223,7 @@ bindkey '\ec' fzf-cd-widget
 
 # CTRL-R - Paste the selected command from history into the command line
 fzf-history-widget() {
-  LBUFFER=$(fc -l 1 | fzf +s | sed "s/ *[0-9]* *//")
+  LBUFFER=$(fc -l 1 | fzf +s +m -n2..,.. | sed "s/ *[0-9*]* *//")
   zle redisplay
 }
 zle     -N   fzf-history-widget
@@ -231,29 +237,144 @@ EOFZF
   echo "OK"
 done
 
-echo
-for shell in bash zsh; do
-  rc=~/.${shell}rc
-  src="source ~/.fzf.${shell}"
+# 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"
 
-  echo "Update $rc:"
-  echo "  - $src"
-  line=$(grep -nF "$src" $rc | sed 's/:.*//')
-  if [ -n "$line" ]; then
-    echo "    - Already exists (line #$line)"
+  if [ $key_bindings -eq 0 ]; then
+    echo -n "Generate ~/.config/fish/functions/fzf_key_bindings.fish ... "
+    cat > ~/.config/fish/functions/fzf_key_bindings.fish << "EOFZF"
+function fzf_key_bindings
+  # Due to a bug of fish, we cannot use command substitution,
+  # so we use temporary file instead
+  if [ -z "$TMPDIR" ]
+    set -g TMPDIR /tmp
+  end
+
+  function __fzf_list
+    command find * -path '*/\.*' -prune \
+      -o -type f -print \
+      -o -type d -print \
+      -o -type l -print 2> /dev/null
+  end
+
+  function __fzf_list_dir
+    command find -L * -path '*/\.*' -prune -o -type d -print 2> /dev/null
+  end
+
+  function __fzf_escape
+    while read item
+      echo -n (echo -n "$item" | sed -E 's/([ "$~'\''([{<>})])/\\\\\\1/g')' '
+    end
+  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_list | fzf -m > $TMPDIR/fzf.result
+      and commandline -i (cat $TMPDIR/fzf.result | __fzf_escape)
+      commandline -f repaint
+      rm -f $TMPDIR/fzf.result
+    end
+  end
+
+  function __fzf_ctrl_t_tmux
+    __fzf_list | fzf -m > $TMPDIR/fzf.result
+    and tmux send-keys -t $argv[1] (cat $TMPDIR/fzf.result | __fzf_escape)
+    rm -f $TMPDIR/fzf.result
+  end
+
+  function __fzf_ctrl_r
+    history | fzf +s +m > $TMPDIR/fzf.result
+    and commandline (cat $TMPDIR/fzf.result)
+    commandline -f repaint
+    rm -f $TMPDIR/fzf.result
+  end
+
+  function __fzf_alt_c
+    # Fish hangs if the command before pipe redirects (2> /dev/null)
+    __fzf_list_dir | fzf +m > $TMPDIR/fzf.result
+    [ (cat $TMPDIR/fzf.result | wc -l) -gt 0 ]
+    and cd (cat $TMPDIR/fzf.result)
+    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"
+  if [ $# -lt 3 ]; then
+    line=$(\grep -nF "$1" "$2" | sed 's/:.*//' | tr '\n' ' ')
   else
-    echo $src >> $rc
-    echo "    - Added"
+    line=$(\grep -nF "$3" "$2" | sed 's/:.*//' | tr '\n' ' ')
+  fi
+  if [ -n "$line" ]; then
+    echo "    - Already exists: line #$line"
+  else
+    echo "$1" >> "$2"
+    echo "    + Added"
   fi
   echo
+}
+
+echo
+for shell in bash zsh; do
+  append_line "[ -f ~/.fzf.${shell} ] && source ~/.fzf.${shell}" ~/.${shell}rc "~/.fzf.${shell}"
 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"
+
+  echo '  * Due to a known bug of fish, you may have issues running fzf on fish.'
+  echo '  * If that happens, try the following:'
+  echo '    - Remove ~/.config/fish/functions/fzf.fish'
+  echo '    - Place fzf executable in a directory included in $PATH'
+  echo
+fi
+
 cat << EOF
-Finished. Reload your .bashrc or .zshrc.
+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 line.
+Use uninstall script to remove fzf.
 
 For more information, see: https://github.com/junegunn/fzf
 EOF

plugin/fzf.vim

@@ -21,26 +21,37 @@
 " 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:min_tmux_width  = 10
 let s:min_tmux_height = 3
 let s:default_tmux_height = '40%'
+let s:launcher = 'xterm -e bash -ic %s'
+let s:fzf_rb = expand('<sfile>:h:h').'/fzf'
 
 let s:cpo_save = &cpo
 set cpo&vim
 
-call system('type fzf')
-if v:shell_error
-  let s:fzf_rb = expand('<sfile>:h:h').'/fzf'
-  if executable(s:fzf_rb)
-    let s:exec = s:fzf_rb
+function! s:fzf_exec()
+  if !exists('s:exec')
+    call system('type fzf')
+    if v:shell_error
+      let s:exec = executable(s:fzf_rb) ? s:fzf_rb : ''
+    else
+      let s:exec = 'fzf'
+    endif
+    return s:fzf_exec()
+  elseif empty(s:exec)
+    unlet s:exec
+    throw 'fzf executable not found'
   else
-    echoerr 'fzf executable not found'
-    finish
+    return s:exec
   endif
-else
-  let s:exec = 'fzf'
-endif
+endfunction
 
 function! s:tmux_enabled()
+  if has('gui_running')
+    return 0
+  endif
+
   if exists('s:tmux')
     return s:tmux
   endif
@@ -62,14 +73,14 @@ function! s:escape(path)
 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', '')
+  try
+    let fzf_exec = s:fzf_exec()
+  catch
+    throw v:exception
+  endtry
 
   if has_key(dict, 'source')
     let source = dict.source
@@ -86,18 +97,23 @@ function! fzf#run(...) abort
   else
     let prefix = ''
   endif
-  let command = prefix.s:exec.' '.optstr.' > '.temps.result
+  let command = prefix.fzf_exec.' '.optstr.' > '.temps.result
 
-  if s:tmux_enabled() && has_key(dict, 'tmux') &&
-        \ dict.tmux > 0 && winheight(0) >= s:min_tmux_height
+  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')
+  if !empty(get(a:dict, 'dir', ''))
     let a:dict.prev_dir = getcwd()
     execute 'chdir '.s:escape(a:dict.dir)
   endif
@@ -112,33 +128,59 @@ endfunction
 function! s:execute(dict, command, temps)
   call s:pushd(a:dict)
   silent !clear
-  execute 'silent !'.a:command
+  if has('gui_running')
+    let launcher = get(a:dict, 'launcher', get(g:, 'fzf_launcher', s:launcher))
+    let command = printf(launcher, "'".substitute(a:command, "'", "'\"'\"'", 'g')."'")
+  else
+    let command = a:command
+  endif
+  execute 'silent !'.command
   redraw!
   if v:shell_error
+    " Do not print error message on exit status 1
+    if v:shell_error > 1
+      echohl ErrorMsg
+      echo 'Error running ' . command
+    endif
     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
+function! s:env_var(name)
+  if exists('$'.a:name)
+    return a:name . "='". substitute(expand('$'.a:name), "'", "'\\\\''", 'g') . "' "
   else
-    let command = a:command
+    return ''
+  endif
+endfunction
+
+function! s:execute_tmux(dict, command, temps)
+  let command = s:env_var('FZF_DEFAULT_OPTS').s:env_var('FZF_DEFAULT_COMMAND').a:command
+  if !empty(get(a:dict, 'dir', ''))
+    let command = 'cd '.s:escape(a:dict.dir).' && '.command
   endif
 
-  if type(a:dict.tmux) == 1 && a:dict.tmux =~ '%$'
-    let height = '-p '.a:dict.tmux[0:-2]
+  let splitopt = '-v'
+  if has_key(a:dict, 'tmux_width')
+    let splitopt = '-h'
+    let size = a:dict.tmux_width
   else
-    let height = '-l '.a:dict.tmux
+    let size = get(a:dict, 'tmux_height', get(a:dict, 'tmux'))
+  endif
+
+  if type(size) == 1 && size =~ '%$'
+    let sizeopt = '-p '.size[0:-2]
+  else
+    let sizeopt = '-l '.size
   endif
 
   let s:pane = substitute(
     \ system(
       \ printf(
-        \ 'tmux split-window %s -P -F "#{pane_id}" %s',
-        \ height, s:shellesc(command))), '\n', '', 'g')
+        \ '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
 

test/test_fzf.rb

@@ -1,14 +1,58 @@
 #!/usr/bin/env ruby
 # encoding: utf-8
 
+require 'rubygems'
 require 'curses'
 require 'timeout'
 require 'stringio'
 require 'minitest/autorun'
+require 'tempfile'
 $LOAD_PATH.unshift File.expand_path('../..', __FILE__)
 ENV['FZF_EXECUTABLE'] = '0'
 load 'fzf'
 
+class MockTTY
+  def initialize
+    @buffer = ''
+    @mutex = Mutex.new
+    @condv = ConditionVariable.new
+  end
+
+  def read_nonblock sz
+    @mutex.synchronize do
+      take sz
+    end
+  end
+
+  def take sz
+    if @buffer.length >= sz
+      ret = @buffer[0, sz]
+      @buffer = @buffer[sz..-1]
+      ret
+    end
+  end
+
+  def getc
+    sleep 0.1
+    while true
+      @mutex.synchronize do
+        if char = take(1)
+          return char
+        else
+          @condv.wait(@mutex)
+        end
+      end
+    end
+  end
+
+  def << str
+    @mutex.synchronize do
+      @buffer << str
+      @condv.broadcast
+    end
+  end
+end
+
 class TestFZF < MiniTest::Unit::TestCase
   def setup
     ENV.delete 'FZF_DEFAULT_SORT'
@@ -24,14 +68,18 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal nil,   fzf.rxflag
     assert_equal true,  fzf.mouse
     assert_equal nil,   fzf.nth
+    assert_equal nil,   fzf.with_nth
     assert_equal true,  fzf.color
     assert_equal false, fzf.black
     assert_equal true,  fzf.ansi256
-    assert_equal '',    fzf.query.get
+    assert_equal '',    fzf.query
     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
+    assert_equal '> ',  fzf.prompt
+    assert_equal false, fzf.print_query
   end
 
   def test_environment_variables
@@ -42,12 +90,12 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal nil,   fzf.nth
 
     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'
+      '-x -m -s 10000 -q "  hello  world  " +c +2 --select-1 -0 ' <<
+      '--no-mouse -f "goodbye world" --black --with-nth=3,-3..,2 --nth=3,-1,2 --reverse --print-query'
     fzf = FZF.new []
     assert_equal 10000,   fzf.sort
     assert_equal '  hello  world  ',
-                          fzf.query.get
+                          fzf.query
     assert_equal 'goodbye world',
                           fzf.filter
     assert_equal :fuzzy,  fzf.extended
@@ -58,14 +106,18 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal false,   fzf.mouse
     assert_equal true,    fzf.select1
     assert_equal true,    fzf.exit0
-    assert_equal [3, -1, 2], fzf.nth
+    assert_equal true,    fzf.reverse
+    assert_equal true,    fzf.print_query
+    assert_equal [2..2, -1..-1, 1..1], fzf.nth
+    assert_equal [2..2, -3..-1, 1..1], fzf.with_nth
   end
 
   def test_option_parser
     # Long opts
     fzf = FZF.new %w[--sort=2000 --no-color --multi +i --query hello --select-1
                      --exit-0 --filter=howdy --extended-exact
-                     --no-mouse --no-256 --nth=1]
+                     --no-mouse --no-256 --nth=1 --with-nth=.. --reverse --prompt (hi)
+                     --print-query]
     assert_equal 2000,    fzf.sort
     assert_equal true,    fzf.multi
     assert_equal false,   fzf.color
@@ -73,18 +125,24 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal false,   fzf.black
     assert_equal false,   fzf.mouse
     assert_equal 0,       fzf.rxflag
-    assert_equal 'hello', fzf.query.get
+    assert_equal 'hello', fzf.query
     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 [0..0],  fzf.nth
+    assert_equal nil,     fzf.with_nth
+    assert_equal true,    fzf.reverse
+    assert_equal '(hi)',  fzf.prompt
+    assert_equal true,    fzf.print_query
 
     # 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]
+                     --no-sort -i --color --no-multi --256
+                     --reverse --no-reverse --prompt (hi) --prompt=(HI)
+                     --print-query --no-print-query]
     assert_equal nil,     fzf.sort
     assert_equal false,   fzf.multi
     assert_equal true,    fzf.color
@@ -93,11 +151,14 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal true,    fzf.mouse
     assert_equal 1,       fzf.rxflag
     assert_equal 'b',     fzf.filter
-    assert_equal 'hello', fzf.query.get
+    assert_equal 'hello', fzf.query
     assert_equal false,   fzf.select1
     assert_equal false,   fzf.exit0
     assert_equal nil,     fzf.extended
-    assert_equal [-2],    fzf.nth
+    assert_equal [-2..-2], fzf.nth
+    assert_equal false,   fzf.reverse
+    assert_equal '(HI)',  fzf.prompt
+    assert_equal false,    fzf.print_query
 
     # Short opts
     fzf = FZF.new %w[-s2000 +c -m +i -qhello -x -fhowdy +2 -n3 -1 -0]
@@ -106,10 +167,10 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal false,   fzf.color
     assert_equal false,   fzf.ansi256
     assert_equal 0,       fzf.rxflag
-    assert_equal 'hello', fzf.query.get
+    assert_equal 'hello', fzf.query
     assert_equal 'howdy', fzf.filter
     assert_equal :fuzzy,  fzf.extended
-    assert_equal [3],     fzf.nth
+    assert_equal [2..2],  fzf.nth
     assert_equal true,    fzf.select1
     assert_equal true,    fzf.exit0
 
@@ -124,37 +185,41 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal true,    fzf.ansi256
     assert_equal false,   fzf.black
     assert_equal 1,       fzf.rxflag
-    assert_equal 'world', fzf.query.get
+    assert_equal 'world', fzf.query
     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
+    assert_equal [3..3, 4..4], fzf.nth
   rescue SystemExit => e
     assert false, "Exited"
   end
 
   def test_invalid_option
-    [%w[--unknown], %w[yo dawg]].each do |argv|
+    [
+      %w[--unknown],
+      %w[yo dawg],
+      %w[--nth=0],
+      %w[-n 0],
+      %w[-n 1..2..3],
+      %w[-n 1....],
+      %w[-n ....3],
+      %w[-n 1....3],
+      %w[-n 1..0],
+      %w[--nth ..0],
+    ].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
   def test_width
     fzf = FZF.new []
     assert_equal 5, fzf.width('abcde')
     assert_equal 4, fzf.width('한글')
     assert_equal 5, fzf.width('한글.')
-  end
+  end if RUBY_VERSION >= '1.9'
 
   def test_trim
     fzf = FZF.new []
@@ -167,7 +232,7 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal ['가나a',   6], fzf.trim('가나ab라마바사.', 5, false)
     assert_equal ['가나ab',  5], fzf.trim('가나ab라마바사.', 6, false)
     assert_equal ['가나ab',  5], fzf.trim('가나ab라마바사.', 7, false)
-  end
+  end if RUBY_VERSION >= '1.9'
 
   def test_format
     fzf = FZF.new []
@@ -445,58 +510,11 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal 2, exact.match(list, "-fuzzy", '', '').length
   end
 
-  if RUBY_PLATFORM =~ /darwin/
-    NFD = '한글'
-    def test_nfc
-      assert_equal 6, NFD.length
-      assert_equal ["한글", [[0, 1], [1, 2]]],
-        FZF::UConv.nfc(NFD, [[0, 3], [3, 6]])
-
-      nfd2 = 'before' + NFD + 'after'
-      assert_equal 6 + 6 + 5, nfd2.length
-
-      nfc, offsets = FZF::UConv.nfc(nfd2, [[4, 14], [9, 13]])
-      o1, o2 = offsets
-      assert_equal 'before한글after', nfc
-      assert_equal 're한글af',        nfc[(o1.first...o1.last)]
-      assert_equal '글a',             nfc[(o2.first...o2.last)]
-    end
-
-    def test_nfd
-      nfc = '한글'
-      nfd = FZF::UConv.nfd(nfc)
-      assert_equal 2, nfd.length
-      assert_equal 6, nfd.join.length
-      assert_equal NFD, nfd.join
-    end
-
-    def test_nfd_fuzzy_matcher
-      matcher = FZF::FuzzyMatcher.new 0
-      assert_equal [], matcher.match([NFD + NFD], '할', '', '')
-      match   = matcher.match([NFD + NFD], '글글', '', '')
-      assert_equal [[NFD + NFD, [[3, 12]]]], match
-      assert_equal ['한글한글', [[1, 4]]], FZF::UConv.nfc(*match.first)
-    end
-
-    def test_nfd_extended_fuzzy_matcher
-      matcher = FZF::ExtendedFuzzyMatcher.new 0
-      assert_equal [], matcher.match([NFD], "'글글", '', '')
-      match   = matcher.match([NFD], "'한글", '', '')
-      assert_equal [[NFD, [[0, 6]]]], match
-      assert_equal ['한글', [[0, 2]]], FZF::UConv.nfc(*match.first)
-    end
-  end
-
-  def test_split
-    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
+    line, offsets = item
     tokens        = fzf.format line, 80, offsets
     assert_equal [], tokens
   end
@@ -529,126 +547,176 @@ class TestFZF < MiniTest::Unit::TestCase
       [list[0], [[2,  5]]],
       [list[1], [[9, 17]]]], matcher.match(list, 'is', '', '')
 
-    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [2]
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [1..1]
     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]
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [2..2]
     assert_equal [[list[0], [[19, 20]]]], matcher.match(list, 'r', '', '')
 
     # Comma-separated
-    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [3, 1]
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [2..2, 0..0]
     assert_equal [[list[0], [[19, 20]]], [list[1], [[3, 4]]]], matcher.match(list, 'r', '', '')
 
     # Ordered
-    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [1, 3]
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [0..0, 2..2]
     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
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [0..0], regex
     assert_equal [[list[0], [[3, 10]]]], matcher.match(list, 're', '', '')
 
-    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [2], regex
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [1..1], 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
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [-1..-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
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [0..0], regex
     assert_equal [list[1]], matcher.match(list, 'f', '', '').map(&:first)
 
-    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [2], regex
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [1..1], regex
     assert_equal [[list[0], [[1, 2]]], [list[1], [[8, 9]]]], matcher.match(list, 'f', '', '')
   end
 
-  def stream_for str
+  def test_nth_match_range
+    list = [
+      ' first  second  third',
+      'fourth	 fifth   sixth',
+    ]
+
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [1..2]
+    assert_equal [[list[0], [[8, 20]]]], matcher.match(list, 'sr', '', '')
+    assert_equal [], matcher.match(list, 'fo', '', '')
+
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE, [1..-1, 0..0]
+    assert_equal [[list[0], [[8, 20]]]], matcher.match(list, 'sr', '', '')
+    assert_equal [[list[1], [[0, 2]]]], matcher.match(list, 'fo', '', '')
+
+    matcher = FZF::ExtendedFuzzyMatcher.new Regexp::IGNORECASE, :fuzzy, [0..0, 1..2]
+    assert_equal [], matcher.match(list, '^t', '', '')
+
+    matcher = FZF::ExtendedFuzzyMatcher.new Regexp::IGNORECASE, :fuzzy, [0..1, 2..2]
+    assert_equal [[list[0], [[16, 17]]]], matcher.match(list, '^t', '', '')
+
+    matcher = FZF::ExtendedFuzzyMatcher.new Regexp::IGNORECASE, :fuzzy, [1..-1]
+    assert_equal [[list[0], [[8, 9]]]], matcher.match(list, '^s', '', '')
+  end
+
+  def stream_for str, delay = 0
     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? }
+          org_gets.tap { |e| sleep(@delay) unless e.nil? }
+        end
+
+        def reopen _
         end
       end
+      sio.instance_variable_set :@delay, delay
+    end
+  end
+
+  def assert_fzf_output opts, given, expected
+    stream = stream_for given
+    output = stream_for ''
+
+    def sorted_lines line
+      line.split($/).sort
+    end
+
+    begin
+      tty = MockTTY.new
+      $stdout = output
+      fzf = FZF.new(opts, stream)
+      fzf.instance_variable_set :@tty, tty
+      thr = block_given? && Thread.new { yield tty }
+      fzf.start
+      thr && thr.join
+    rescue SystemExit => e
+      assert_equal 0, e.status
+      assert_equal sorted_lines(expected), sorted_lines(output.string)
+    ensure
+      $stdout = STDOUT
+    end
+  end
+
+  def test_filter
+    {
+      %w[--filter=ol] => 'World',
+      %w[--filter=ol --print-query] => "ol\nWorld",
+    }.each do |opts, expected|
+      assert_fzf_output opts, "Hello\nWorld", expected
     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
+    {
+      %w[--query=ol --select-1] => 'World',
+      %w[--query=ol --select-1 --print-query] => "ol\nWorld",
+    }.each do |opts, expected|
+      assert_fzf_output opts, "Hello\nWorld", expected
     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
+    assert_fzf_output %w[--select-1], 'Hello World', 'Hello World'
   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
+      Timeout::timeout(0.5) do
+        assert_fzf_output %w[--query=o --select-1], "hello\nworld", "should not match"
       end
-      flunk 'Should not reach here'
-    rescue Exception => e
+    rescue Timeout::Error
       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
+    {
+      %w[--query=zz --exit-0] => '',
+      %w[--query=zz --exit-0 --print-query] => 'zz',
+    }.each do |opts, expected|
+      assert_fzf_output opts, "Hello\nWorld", expected
     end
   end
 
   def test_exit_0_without_query
-    stream = stream_for ""
-    output = StringIO.new
+    assert_fzf_output %w[--exit-0], '', ''
+  end
 
-    begin
-      $stdout = output
-      FZF.new(%w[--exit-0], stream).start
-    rescue SystemExit => e
-      assert_equal 0, e.status
-      assert_equal '', output.string
-    ensure
-      $stdout = STDOUT
-    end
+  def test_with_nth
+    source = "hello world\nbatman"
+    assert_fzf_output %w[-0 -1 --with-nth=2,1 -x -q ^worl],
+      source, 'hello world'
+    assert_fzf_output %w[-0 -1 --with-nth=2,1 -x -q llo$],
+      source, 'hello world'
+    assert_fzf_output %w[-0 -1 --with-nth=.. -x -q llo$],
+      source, ''
+    assert_fzf_output %w[-0 -1 --with-nth=2,2,2,..,1 -x -q worlworlworlhellworlhell],
+      source, 'hello world'
+    assert_fzf_output %w[-0 -1 --with-nth=1,1,-1,1 -x -q batbatbatbat],
+      source, 'batman'
+  end
+
+  def test_with_nth_transform
+    fzf = FZF.new %w[--with-nth 2..,1]
+    assert_equal 'my world hello', fzf.transform('hello my world')
+    assert_equal 'my   world hello', fzf.transform('hello   my   world')
+    assert_equal 'my   world  hello', fzf.transform('hello   my   world  ')
+
+    fzf = FZF.new %w[--with-nth 2,-1,2]
+    assert_equal 'my world my', fzf.transform('hello my world')
+    assert_equal 'world world world', fzf.transform('hello world')
+    assert_equal 'world  world  world', fzf.transform('hello world  ')
   end
 
   def test_ranking_overlap_match_regions
@@ -661,5 +729,82 @@ class TestFZF < MiniTest::Unit::TestCase
       ['1           3   4      2', [[0, 24], [12, 17]]],
     ], FZF.sort(FZF::ExtendedFuzzyMatcher.new(nil).match(list, '12 34', '', ''))
   end
+
+  def test_constrain
+    fzf = FZF.new []
+
+    # [#****             ]
+    assert_equal [false, 0, 0], fzf.constrain(0, 0, 5, 100)
+
+    # *****[**#**  ...   ] => [**#*******  ... ]
+    assert_equal [true, 0, 2], fzf.constrain(5, 7, 10, 100)
+
+    # [**********]**#** => ***[*********#]**
+    assert_equal [true, 3, 12], fzf.constrain(0, 12, 15, 10)
+
+    # *****[**#**  ] => ***[**#****]
+    assert_equal [true, 3, 5], fzf.constrain(5, 7, 10, 7)
+
+    # *****[**#** ] => ****[**#***]
+    assert_equal [true, 4, 6], fzf.constrain(5, 7, 10, 6)
+
+    # *****  [#] => ****[#]
+    assert_equal [true, 4, 4], fzf.constrain(10, 10, 5, 1)
+
+    # [ ] #**** => [#]****
+    assert_equal [true, 0, 0], fzf.constrain(-5, 0, 5, 1)
+
+    # [ ] **#** => **[#]**
+    assert_equal [true, 2, 2], fzf.constrain(-5, 2, 5, 1)
+
+    # [*****  #] => [****#   ]
+    assert_equal [true, 0, 4], fzf.constrain(0, 7, 5, 10)
+
+    # **[*****  #] => [******# ]
+    assert_equal [true, 0, 6], fzf.constrain(2, 10, 7, 10)
+  end
+
+  def test_invalid_utf8
+    tmp = Tempfile.new('fzf')
+    tmp << 'hello ' << [0xff].pack('C*') << ' world' << $/ << [0xff].pack('C*')
+    tmp.close
+    begin
+      Timeout::timeout(0.5) do
+        FZF.new(%w[-n..,1,2.. -q^ -x], File.open(tmp.path)).start
+      end
+    rescue Timeout::Error
+      Curses.close_screen
+    end
+  ensure
+    tmp.unlink
+  end
+
+  def test_with_nth_mock_tty
+    # Manual selection with input
+    assert_fzf_output ["--with-nth=2,1"], "hello world", "hello world" do |tty|
+      tty << "world"
+      tty << "hell"
+      tty << "\r"
+    end
+
+    # Manual selection without input
+    assert_fzf_output ["--with-nth=2,1"], "hello world", "hello world" do |tty|
+      tty << "\r"
+    end
+
+    # Manual selection with input and --multi
+    lines = "hello world\ngoodbye world"
+    assert_fzf_output %w[-m --with-nth=2,1], lines, lines do |tty|
+      tty << "o"
+      tty << "\e[Z\e[Z"
+      tty << "\r"
+    end
+
+    # Manual selection without input and --multi
+    assert_fzf_output %w[-m --with-nth=2,1], lines, lines do |tty|
+      tty << "\e[Z\e[Z"
+      tty << "\r"
+    end
+  end
 end
 

uninstall

@@ -0,0 +1,78 @@
+#!/bin/bash
+
+confirm() {
+  while [ 1 ]; do
+    read -p "$1" -n 1 -r
+    echo
+    if [[ "$REPLY" =~ ^[Yy] ]]; then
+      return 0
+    elif [[ "$REPLY" =~ ^[Nn] ]]; then
+      return 1
+    fi
+  done
+}
+
+remove() {
+  echo "Remove $1"
+  rm -f "$1"
+}
+
+remove_line() {
+  src=$(readlink "$1")
+  if [ $? -eq 0 ]; then
+    echo "Remove from $1 ($src):"
+  else
+    src=$1
+    echo "Remove from $1:"
+  fi
+
+  shift
+  line_no=1
+  match=0
+  while [ -n "$1" ]; do
+    line=$(sed -n "$line_no,\$p" "$src" | \grep -m1 -nF "$1")
+    if [ $? -ne 0 ]; then
+      shift
+      line_no=1
+      continue
+    fi
+    line_no=$(( $(sed 's/:.*//' <<< "$line") + line_no - 1 ))
+    content=$(sed 's/^[0-9]*://' <<< "$line")
+    match=1
+    echo    "  - Line #$line_no: $content"
+    [ "$content" = "$1" ] || confirm "    - Remove (y/n) ? "
+    if [ $? -eq 0 ]; then
+      awk -v n=$line_no 'NR == n {next} {print}' "$src" > "$src.bak" &&
+        mv "$src.bak" "$src" || break
+      echo  "      - Removed"
+    else
+      echo  "      - Skipped"
+      line_no=$(( line_no + 1 ))
+    fi
+  done
+  [ $match -eq 0 ] && echo "  - Nothing found"
+  echo
+}
+
+for shell in bash zsh; do
+  remove ~/.fzf.${shell}
+  remove_line ~/.${shell}rc \
+    "[ -f ~/.fzf.${shell} ] && source ~/.fzf.${shell}" \
+    "source ~/.fzf.${shell}"
+done
+
+bind_file=~/.config/fish/functions/fish_user_key_bindings.fish
+if [ -f "$bind_file" ]; then
+  remove_line "$bind_file" "fzf_key_bindings"
+fi
+
+if [ -d ~/.config/fish/functions ]; then
+  remove ~/.config/fish/functions/fzf.fish
+
+  if [ "$(ls -A ~/.config/fish/functions)" ]; then
+    echo "Can't delete non-empty directory: \"~/.config/fish/functions\""
+  else
+    rmdir ~/.config/fish/functions
+  fi
+fi
+