0.8.3

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

.gitignore

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

README.md

@@ -5,6 +5,8 @@ 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.
 
@@ -27,9 +29,12 @@ git clone https://github.com/junegunn/fzf.git ~/.fzf
 The script will setup:
 
 - `fzf` executable
-- Key bindings (`CTRL-T`, `CTRL-R`, etc.)
+- Key bindings (`CTRL-T`, `CTRL-R`, and `ALT-C`) for bash and zsh
 - Fuzzy auto-completion for 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.
+
 ### Install as Vim plugin
 
 Once you have cloned the repository, add the following line to your .vimrc.
@@ -47,20 +52,31 @@ Usage
 ```
 usage: fzf [options]
 
-  Options
-    -m, --multi          Enable multi-select
+  Search
     -x, --extended       Extended-search mode
     -e, --extended-exact Extended-search mode (exact match)
-    -q, --query=STR      Initial query
-    -f, --filter=STR     Filter mode. Do not start interactive finder.
-    -s, --sort=MAX       Maximum number of matched items to sort (default: 1000)
-    +s, --no-sort        Do not sort the result. Keep the sequence unchanged.
     -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)
+
+  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
-        --no-mouse       Disable mouse
+
+  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
@@ -89,7 +105,7 @@ 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, CTRL-G, or ESC will terminate the finder.
@@ -98,7 +114,7 @@ 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
@@ -131,30 +147,65 @@ Useful examples
 ---------------
 
 ```sh
-# vimf - Open selected file in Vim
-vimf() {
-  FILE=$(fzf) && vim "$FILE"
+# fe [FUZZY PATTERN] - Open the selected file with the default editor
+#   - Bypass fuzzy finder if there's only one match (--select-1)
+#   - 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
 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")"
+}
 ```
 
 Key bindings for command line
@@ -162,20 +213,17 @@ Key bindings for command line
 
 The install script will setup the following key bindings.
 
-### bash
-
-- `CTRL-T` - Paste the selected file path(s) into the command line
-- `CTRL-R` - Paste the selected command from history into the command line
-
-The source code can be found in `~/.fzf.bash`.
-
-### zsh
+### bash/zsh
 
 - `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
 
-The source code can be found in `~/.fzf.zsh`.
+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`.
 
 Auto-completion
 ---------------
@@ -253,7 +301,11 @@ TODO :smiley:
 Usage as Vim plugin
 -------------------
 
-If you install fzf as a Vim plugin, `:FZF` command will be added.
+(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
@@ -266,27 +318,83 @@ If you install fzf as a Vim plugin, `:FZF` command will be added.
 :FZF --no-sort -m /tmp
 ```
 
-You can override the source command which produces input to fzf.
+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`      | number/string | Use tmux split if possible with the given height (e.g. `20`, `50%`) |
+
+#### Examples
+
+If `sink` option is not given, `fzf#run` will simply return the list.
 
 ```vim
-let g:fzf_source = 'find . -type f'
+let items = fzf#run({ 'options': '-m +c', 'dir': '~', 'source': 'ls' })
 ```
 
-And you can predefine default options to fzf command.
+But if `sink` is given as a string, the command will be executed for each
+selected item.
 
 ```vim
-let g:fzf_options = '--no-color --extended'
+" Each selected item will be opened in a new tab
+let items = fzf#run({ 'sink': 'tabe', 'options': '-m +c', 'dir': '~', 'source': 'ls' })
 ```
 
-For more advanced uses, you can call `fzf#run` function as follows.
+We can also use a Vim list as the source as follows:
 
 ```vim
-:call fzf#run('tabedit', '-m +c')
+" 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':    15
+\ })<CR>
 ```
 
-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.
+`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':  g:buflist(),
+\   'sink':    function('g:bufopen'),
+\   'options': '+m +s',
+\   'tmux':    15
+\ })<CR>
+```
 
 Tips
 ----

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

@@ -7,7 +7,7 @@
 #  / __/ / /_/ __/
 # /_/   /___/_/    Fuzzy finder for your shell
 #
-# Version: 0.8.1 (March 9, 2014)
+# Version: 0.8.3 (April 3, 2014)
 #
 # Author:  Junegunn Choi
 # URL:     https://github.com/junegunn/fzf
@@ -50,7 +50,8 @@ end
 
 class FZF
   C = Curses
-  attr_reader :rxflag, :sort, :color, :black, :ansi256, :mouse, :multi, :query, :filter, :extended
+  attr_reader :rxflag, :sort, :nth, :color, :black, :ansi256,
+              :mouse, :multi, :query, :select1, :exit0, :filter, :extended
 
   class AtomicVar
     def initialize value
@@ -82,7 +83,11 @@ class FZF
     @multi    = false
     @mouse    = true
     @extended = nil
+    @select1  = false
+    @exit0    = false
     @filter   = nil
+    @nth      = nil
+    @delim    = nil
 
     argv =
       if opts = ENV['FZF_DEFAULT_OPTS']
@@ -93,7 +98,7 @@ class FZF
       end
     while o = argv.shift
       case o
-      when '--version'           then version
+      when '--version'           then FZF.version
       when '-h', '--help'        then usage 0
       when '-m', '--multi'       then @multi    = true
       when '+m', '--no-multi'    then @multi    = false
@@ -110,6 +115,10 @@ class FZF
       when       '--mouse'       then @mouse    = true
       when       '--no-mouse'    then @mouse    = 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
@@ -120,6 +129,17 @@ class FZF
         @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 $1
       when '-s', '--sort'
         usage 1, 'sort size required' unless sort = argv.shift
         usage 1, 'invalid sort size'  unless sort =~ /^[0-9]+$/
@@ -155,67 +175,129 @@ class FZF
     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
     if @filter
-      start_reader(false).join
+      start_reader.join
       filter_list @new
     else
-      @stdout = $stdout.clone
-      $stdout.reopen($stderr)
+      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
 
-      start_reader true
-      init_screen
-      start_renderer
-      start_search
-      start_loop
+          if loaded || len > 1
+            start_renderer
+            Thread.new { start_loop }
+          end
+        end
+
+        sleep
+      else
+        start_search
+        start_renderer
+        start_loop
+      end
     end
   end
 
   def filter_list list
-    matches = get_matcher.match(list, @filter, '', '')
+    matches = matcher.match(list, @filter, '', '')
     if @sort && matches.length <= @sort
-      matches = sort_by_rank(matches)
+      matches = FZF.sort(matches)
     end
     matches.each { |m| puts m.first }
   end
 
-  def get_matcher
-    if @extended
-      ExtendedFuzzyMatcher.new @rxflag, @extended
-    else
-      FuzzyMatcher.new @rxflag
-    end
+  def matcher
+    @matcher ||=
+      if @extended
+        ExtendedFuzzyMatcher.new @rxflag, @extended, @nth, @delim
+      else
+        FuzzyMatcher.new @rxflag, @nth, @delim
+      end
   end
 
-  def version
-    File.open(__FILE__, 'r') do |f|
-      f.each_line do |line|
-        if line =~ /Version: (.*)/
-          $stdout.puts "fzf " << $1
-          exit
+  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]
 
-  Options
-    -m, --multi          Enable multi-select
+  Search
     -x, --extended       Extended-search mode
     -e, --extended-exact Extended-search mode (exact match)
-    -q, --query=STR      Initial query
-    -f, --filter=STR     Filter mode. Do not start interactive finder.
-    -s, --sort=MAX       Maximum number of matched items to sort (default: 1000)
-    +s, --no-sort        Do not sort the result. Keep the sequence unchanged.
     -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)
+
+  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
-        --no-mouse       Disable mouse
+
+  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
@@ -456,21 +538,6 @@ class FZF
     C.attroff color(:chosen, true) if chosen
   end
 
-  def sort_by_rank list
-    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
-
   AFTER_1_9 = RUBY_VERSION.split('.').map { |e| e.rjust(3, '0') }.join >= '001009'
 
   if AFTER_1_9
@@ -517,6 +584,9 @@ 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
@@ -574,7 +644,7 @@ class FZF
     C.refresh
   end
 
-  def start_reader curses
+  def start_reader
     stream =
       if @source.tty?
         if default_command = ENV['FZF_DEFAULT_COMMAND']
@@ -593,13 +663,12 @@ class FZF
         emit(:new) { @new << line.chomp }
       end
       emit(:loaded) { true }
-      @spinner.clear if curses
+      @spinner.clear if @spinner
     end
   end
 
-  def start_search
-    matcher  = get_matcher
-    searcher = Thread.new {
+  def start_search &callback
+    Thread.new do
       lists   = []
       events  = {}
       fcache  = {}
@@ -638,7 +707,7 @@ 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)
             unless matches = fcache[q]
@@ -660,7 +729,7 @@ class FZF
               next if skip
               matches = @sort ? found : found.reverse
               if !empty && @sort && matches.length <= @sort
-                matches = sort_by_rank(matches)
+                matches = FZF.sort(matches)
               end
               fcache[q] = matches
             end
@@ -669,6 +738,10 @@ class FZF
             @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
 
@@ -677,7 +750,7 @@ class FZF
       rescue Exception => e
         @main.raise e
       end
-    }
+    end
   end
 
   def pick
@@ -721,6 +794,8 @@ class FZF
   end
 
   def start_renderer
+    init_screen
+
     Thread.new do
       begin
         while blk = @queue.shift
@@ -904,8 +979,10 @@ class FZF
   def start_loop
     got = nil
     begin
-      input   = @query.get.dup
-      cursor  = input.length
+      input = @query.get.dup
+      cursor = input.length
+      yanked = ''
+      mouse_event = MouseEvent.new
       backword = proc {
         cursor = (input[0, cursor].rindex(/\s\S/) || -1) + 1
       }
@@ -916,7 +993,11 @@ class FZF
           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 { vselect { |v| v - 1 } },
@@ -924,8 +1005,10 @@ class FZF
         ctrl(:w) => proc {
           pcursor = cursor
           backword.call
+          yanked = input[cursor...pcursor] if pcursor > cursor
           input = input[0...cursor] + input[pcursor..-1]
         },
+        ctrl(:y) => proc { actions[:default].call yanked },
         ctrl(:h) => proc { input[cursor -= 1] = '' if cursor > 0 },
         ctrl(:i) => proc { |o|
           if @multi && sel = pick
@@ -952,6 +1035,39 @@ class FZF
           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(:p)] = actions[ctrl(:k)]
       actions[ctrl(:n)] = actions[ctrl(:j)]
@@ -959,46 +1075,12 @@ class FZF
       actions[127]      = actions[ctrl(:h)]
       actions[ctrl(:q)] = actions[ctrl(:g)] = actions[ctrl(:c)] = actions[:esc]
 
-      emit(:key) { [@query.get, cursor] } unless @query.empty?
-      mouse = MouseEvent.new
       while true
         @cursor_x.set cursor
         render { print_input }
 
         if key = get_input(actions)
-          upd = actions.fetch(key, 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.v = tv
-                  when :release
-                    if !shift && mouse.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
-          }).call(key)
+          upd = actions.fetch(key, actions[:default]).call(key)
 
           # Dispatch key event
           emit(:key) { [@query.set(input.dup), cursor] } if upd
@@ -1018,10 +1100,58 @@ 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
@@ -1065,15 +1195,15 @@ 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, mode = :fuzzy
-      super rxflag
+    def initialize rxflag, mode = :fuzzy, nth = nil, delim = nil
+      super rxflag, nth, delim
       @regexps = {}
       @mode = mode
     end
@@ -1135,7 +1265,7 @@ 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.gemspec

@@ -1,7 +1,7 @@
 # coding: utf-8
 Gem::Specification.new do |spec|
   spec.name          = 'fzf'
-  spec.version       = '0.8.1'
+  spec.version       = '0.8.3'
   spec.authors       = ['Junegunn Choi']
   spec.email         = ['junegunn.c@gmail.com']
   spec.description   = %q{Fuzzy finder for your shell}
@@ -13,5 +13,5 @@ Gem::Specification.new do |spec|
   spec.files         = %w[fzf.gemspec]
   spec.executables   = 'fzf'
 
-  spec.add_runtime_dependency 'curses', '~> 1.0.0'
+  spec.extensions   += ['ext/mkrf_conf.rb']
 end

install

@@ -29,10 +29,13 @@ if [ $? -eq 0 ]; then
 else
   echo "Not found"
   echo "Installing 'curses' gem ... "
-  /usr/bin/env gem install curses -v 1.0.0
+  /usr/bin/env gem install curses -v 1.0.0 --user-install
   if [ $? -ne 0 ]; then
+    echo
     echo "Failed to install 'curses' gem."
-    echo "Try installing it as root: sudo gem install curses"
+    if [[ $(uname -r) =~ 'ARCH' ]]; then
+      echo "Make sure that base-devel package group is installed."
+    fi
     exit 1
   fi
 fi
@@ -86,17 +89,15 @@ export -f fzf > /dev/null
 
 # Auto-completion
 # ---------------
-$fzf_completion
+[[ \$- =~ i ]] && $fzf_completion
 
 EOF
 
   if [ $key_bindings -eq 0 ]; then
     if [ $shell = bash ]; then
-      cat >> $src << "EOF"
+      cat >> $src << "EOFZF"
 # Key bindings
 # ------------
-if [[ $- =~ i ]]; then
-
 __fsel() {
   find * -path '*/\.*' -prune \
     -o -type f -print \
@@ -107,54 +108,107 @@ __fsel() {
   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
-  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"'
+  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"'
+  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
-  bind '"\C-t": "\eddi$(__fsel)\C-x\C-e\e0P$a \C-x\C-r"'
+  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"'
+  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
-EOF
+EOFZF
     else
-      cat >> $src << "EOF"
+      cat >> $src << "EOFZF"
 # Key bindings
 # ------------
 # CTRL-T - Paste the selected file path(s) into the command line
-fzf-file-widget() {
-  local FILES
-  local IFS="
-"
-  FILES=($(
-    find * -path '*/\.*' -prune \
+__fsel() {
+  set -o nonomatch
+  find * -path '*/\.*' -prune \
     -o -type f -print \
     -o -type d -print \
-    -o -type l -print 2> /dev/null | fzf -m))
-  unset IFS
-  FILES=$FILES:q
-  LBUFFER="${LBUFFER%% #} $FILES"
-  zle redisplay
+    -o -type l -print 2> /dev/null | fzf -m | while read item; do
+    printf '%q ' "$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 "${$(find * -path '*/\.*' -prune \
+  cd "${$(set -o nonomatch; find * -path '*/\.*' -prune \
           -o -type d -print 2> /dev/null | fzf):-.}"
   zle reset-prompt
 }
@@ -169,7 +223,8 @@ fzf-history-widget() {
 zle     -N   fzf-history-widget
 bindkey '^R' fzf-history-widget
 
-EOF
+fi
+EOFZF
     fi
   fi
 
@@ -183,8 +238,9 @@ for shell in bash zsh; do
 
   echo "Update $rc:"
   echo "  - $src"
-  if [ $(grep -F "$src" $rc | wc -l) -gt 0 ]; then
-    echo "    - Not added (already being sourced)"
+  line=$(grep -nF "$src" $rc | sed 's/:.*//')
+  if [ -n "$line" ]; then
+    echo "    - Already exists (line #$line)"
   else
     echo $src >> $rc
     echo "    - Added"
@@ -198,5 +254,7 @@ Finished. Reload your .bashrc or .zshrc.
    source ~/.zshrc   # zsh
 
 To uninstall fzf, simply remove the added line.
+
+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
 "
@@ -21,39 +21,187 @@
 " 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_height = 3
+let s:default_tmux_height = '40%'
+
+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
+  else
+    echoerr 'fzf executable not found'
+    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(command, ...)
-  let cwd = getcwd()
-  try
-    let args = copy(a:000)
-    if len(args) > 0 && isdirectory(expand(args[-1]))
-      let dir = remove(args, -1)
-      execute 'chdir '.s:escape(dir)
+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
-    let argstr  = join(args)
-    let tf      = tempname()
-    let prefix  = exists('g:fzf_source') ? g:fzf_source.'|' : ''
-    let fzf     = executable(s:exec)     ? s:exec : 'fzf'
-    let options = empty(argstr)          ? get(g:, 'fzf_options', '') : argstr
-    execute "silent !".prefix.fzf.' '.options." > ".tf
-    if !v:shell_error
-      for line in readfile(tf)
-        if !empty(line)
-          execute a:command.' '.s:escape(line)
+  else
+    let prefix = ''
+  endif
+  let command = prefix.s:exec.' '.optstr.' > '.temps.result
+
+  if s:tmux_enabled() && has_key(dict, 'tmux') &&
+        \ dict.tmux > 0 && winheight(0) >= s:min_tmux_height
+    return s:execute_tmux(dict, command, temps)
+  else
+    return s:execute(dict, command, temps)
+  endif
+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
+
+  if type(a:dict.tmux) == 1 && a:dict.tmux =~ '%$'
+    let height = '-p '.a:dict.tmux[0:-2]
+  else
+    let height = '-l '.a:dict.tmux
+  endif
+
+  let s:pane = substitute(
+    \ system(
+      \ printf(
+        \ 'tmux split-window %s -P -F "#{pane_id}" %s',
+        \ height, 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
-    execute 'chdir '.s:escape(cwd)
-    redraw!
+  endif
+
+  for tf in values(a:temps)
     silent! call delete(tf)
-  endtry
+  endfor
+
+  call s:popd(a:dict)
+
+  return lines
 endfunction
 
-command! -nargs=* -complete=dir FZF call fzf#run('silent e', <f-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

@@ -1,6 +1,9 @@
 #!/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'
@@ -20,6 +23,15 @@ class TestFZF < MiniTest::Unit::TestCase
     assert_equal true,  fzf.color
     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
   end
 
   def test_environment_variables
@@ -27,8 +39,11 @@ class TestFZF < MiniTest::Unit::TestCase
     ENV['FZF_DEFAULT_SORT'] = '20000'
     fzf = FZF.new []
     assert_equal 20000, fzf.sort
+    assert_equal nil,   fzf.nth
 
-    ENV['FZF_DEFAULT_OPTS'] = '-x -m -s 10000 -q "  hello  world  " +c +2 --no-mouse -f "goodbye world" --black'
+    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'
     fzf = FZF.new []
     assert_equal 10000,   fzf.sort
     assert_equal '  hello  world  ',
@@ -41,12 +56,16 @@ class TestFZF < MiniTest::Unit::TestCase
     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 [3, -1, 2], fzf.nth
   end
 
   def test_option_parser
     # Long opts
-    fzf = FZF.new %w[--sort=2000 --no-color --multi +i --query hello
-                     --filter=howdy --extended-exact --no-mouse --no-256]
+    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]
     assert_equal 2000,    fzf.sort
     assert_equal true,    fzf.multi
     assert_equal false,   fzf.color
@@ -55,11 +74,16 @@ class TestFZF < MiniTest::Unit::TestCase
     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
 
-    fzf = FZF.new %w[--sort=2000 --no-color --multi +i --query hello
-                     --filter a --filter b --no-256 --black
+    # 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]
     assert_equal nil,     fzf.sort
     assert_equal false,   fzf.multi
@@ -70,10 +94,13 @@ class TestFZF < MiniTest::Unit::TestCase
     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
 
     # Short opts
-    fzf = FZF.new %w[-s 2000 +c -m +i -qhello -x -fhowdy +2]
+    fzf = FZF.new %w[-s2000 +c -m +i -qhello -x -fhowdy +2 -n3 -1 -0]
     assert_equal 2000,    fzf.sort
     assert_equal true,    fzf.multi
     assert_equal false,   fzf.color
@@ -82,10 +109,15 @@ class TestFZF < MiniTest::Unit::TestCase
     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
-                     -s 3000 -c +m -i -q world +x -fworld -2 --black --no-black]
+    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
@@ -93,12 +125,11 @@ class TestFZF < MiniTest::Unit::TestCase
     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
-
-    fzf = FZF.new %w[--query hello +s -s 2000 --query=world]
-    assert_equal 2000,    fzf.sort
-    assert_equal 'world', fzf.query.get
+    assert_equal [4, 5],  fzf.nth
   rescue SystemExit => e
     assert false, "Exited"
   end
@@ -109,6 +140,12 @@ class TestFZF < MiniTest::Unit::TestCase
         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
@@ -363,7 +400,7 @@ 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]]],
@@ -374,16 +411,19 @@ 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]]],
-       ["0____1",   [[0, 6], [1, 3]]],
-       ["0_____1",  [[0, 7], [1, 3]]],
-       ["0______1", [[0, 8], [1, 3]]],
-       ["___01___", [[3, 5], [0, 2]]],
-       ["____0_1",  [[4, 7], [0, 2]]]],
-      FZF.new([]).sort_by_rank(xmatcher.match(list, '01 __', '', '')))
+      [["_01_",     [[1, 3], [0, 4]], [4, 4, "_01_"]],
+       ["___01___", [[3, 5], [0, 2]], [4, 8, "___01___"]],
+       ["____0_1",  [[4, 7], [0, 2]], [5, 7, "____0_1"]],
+       ["0____1",   [[0, 6], [1, 3]], [6, 6, "0____1"]],
+       ["0_____1",  [[0, 7], [1, 3]], [7, 7, "0_____1"]],
+       ["0______1", [[0, 8], [1, 3]], [8, 8, "0______1"]]],
+      FZF.sort(xmatcher.match(list, '01 __', '', '')).map { |tuple|
+        tuple << FZF.rank(tuple)
+      }
+    )
   end
 
   def test_extended_exact_mode
@@ -476,5 +516,150 @@ class TestFZF < MiniTest::Unit::TestCase
     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