Revert "Reduce the number of Curses.refresh calls"

This reverts commit 2d3a0a1034
(which doesn't make any noticeable difference)

README.md

@@ -16,8 +16,24 @@ fzf requires Ruby (>= 1.8.5).
 Installation
 ------------
 
-Download [fzf executable](https://raw.github.com/junegunn/fzf/master/fzf) and
-put it somewhere in your search $PATH.
+### Using install script
+
+Clone this repository and run
+[install](https://github.com/junegunn/fzf/blob/master/install) script.
+
+```sh
+git clone https://github.com/junegunn/fzf.git ~/.fzf
+~/.fzf/install
+```
+
+The script will add an alias to fzf and auto-completion support to your
+`.bashrc` and `.zshrc`.
+
+### Manual installation
+
+Or you can just download
+[fzf executable](https://raw.github.com/junegunn/fzf/master/fzf) and put it
+somewhere in your search $PATH.
 
 ```sh
 mkdir -p ~/bin
@@ -25,20 +41,6 @@ wget https://raw.github.com/junegunn/fzf/master/fzf -O ~/bin/fzf
 chmod +x ~/bin/fzf
 ```
 
-Or you can just clone this repository and run
-[install](https://github.com/junegunn/fzf/blob/master/install) script.
-
-```sh
-git clone https://github.com/junegunn/fzf.git
-fzf/install
-```
-
-Make sure that ~/bin is included in $PATH.
-
-```sh
-export PATH=$PATH:~/bin
-```
-
 ### Install as Ruby gem
 
 fzf can be installed as a Ruby gem
@@ -71,11 +73,13 @@ Usage
 ```
 usage: fzf [options]
 
-  -m, --multi      Enable multi-select
-  -s, --sort=MAX   Maximum number of matched items to sort. Default: 500
-  +s, --no-sort    Do not sort the result. Keep the sequence unchanged.
-  +i               Case-sensitive match
-  +c, --no-color   Disable colors
+    -m, --multi      Enable multi-select
+    -x, --extended   Extended-search mode
+    -q, --query=STR  Initial query
+    -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-sensitive match
+    +c, --no-color   Disable colors
 ```
 
 fzf will launch curses-based finder, read the list from STDIN, and write the
@@ -103,31 +107,66 @@ history | fzf +s
 ### Key binding
 
 Use CTRL-J and CTRL-K (or CTRL-N and CTRL-P) to change the selection, press
-enter key to select the item. CTRL-C will terminate the finder.
+enter key to select the item. CTRL-C, CTRL-G, or ESC will terminate the finder.
 
 The following readline key bindings should also work as expected.
 
 - CTRL-A / CTRL-E
 - CTRL-B / CTRL-F
 - CTRL-W / CTRL-U
+- ALT-B / ALT-F
 
 If you enable multi-select mode with `-m` option, you can select multiple items
 with TAB or Shift-TAB key.
 
+### Extended-search mode
+
+With `-x` or `--extended` option, fzf will start in "extended-search mode".
+
+In this mode, you can specify multiple patterns delimited by spaces,
+such as: `^music .mp3$ sbtrkt !rmx`
+
+| Token    | Description                      | Match type           |
+| -------- | -------------------------------- | -------------------- |
+| `^music` | Items that start with `music`    | prefix-exact-match   |
+| `.mp3$`  | Items that end with `.mp3`       | suffix-exact-match   |
+| `sbtrkt` | Items that match `sbtrkt`        | fuzzy-match          |
+| `!rmx`   | Items that do not match `rmx`    | inverse-fuzzy-match  |
+| `'wild`  | Items that include `wild`        | exact-match (quoted) |
+| `!'fire` | Items that do not include `fire` | inverse-exact-match  |
+
 Usage as Vim plugin
 -------------------
 
 If you install fzf as a Vim plugin, `:FZF` command will be added.
 
 ```vim
+" Look for files under current directory
 :FZF
-:FZF --no-sort
+
+" Look for files under your home directory
+:FZF ~
+
+" With options
+:FZF --no-sort -m /tmp
 ```
 
-You can override the command which produces input to fzf.
+You can override the source command which produces input to fzf.
 
 ```vim
-let g:fzf_command = 'find . -type f'
+let g:fzf_source = 'find . -type f'
+```
+
+And you can predefine default options to fzf command.
+
+```vim
+let g:fzf_options = '--no-color --extended'
+```
+
+For more advanced uses, you can call `fzf#run` function as follows.
+
+```vim
+:call fzf#run('tabedit', '-m +c')
 ```
 
 Most of the time, you will prefer native Vim plugins with better integration
@@ -153,6 +192,14 @@ fda() {
   DIR=$(find ${1:-*} -type d 2> /dev/null | fzf) && cd "$DIR"
 }
 
+# fsel - Select multiple files in the given path
+fsel() {
+  find ${1:-*} | fzf -m | while read item; do
+    echo -n "\"$item\" "
+  done
+  echo
+}
+
 # fh - repeat history
 fh() {
   eval $(history | fzf +s | sed 's/ *[0-9]* *//')
@@ -177,7 +224,7 @@ zsh widgets
 -----------
 
 ```sh
-# CTRL-T - Paste the selected file(s) path into the command line
+# CTRL-T - Paste the selected file path(s) into the command line
 fzf-file-widget() {
   local FILES
   local IFS="
@@ -212,6 +259,59 @@ zle     -N   fzf-history-widget
 bindkey '^R' fzf-history-widget
 ```
 
+Auto-completion (experimental)
+------------------------------
+
+Disclaimer: *Auto-completion feature is currently experimental, it can change
+over time*
+
+### bash
+
+Fuzzy completion can be triggered if the word before the cursor ends
+with the trigger sequence which is by default `**`.
+
+- `COMMAND [DIRECTORY/][FUZZY_PATTERN]**<TAB>`
+
+#### Examples
+
+```sh
+# Files under current directory
+# - You can select multiple items with TAB key
+vim **<TAB>
+
+# Files under parent directory
+vim ../**<TAB>
+
+# Files under parent directory that match `fzf`
+vim ../fzf**<TAB>
+
+# Files under your home directory
+vim ~/**<TAB>
+
+
+# Directories under current directory (single-selection)
+cd **<TAB>
+
+# Directories under ~/github that match `fzf`
+cd ~/github/fzf**<TAB>
+```
+
+#### Settings
+
+```sh
+# Use ~~ as the trigger sequence instead of the default **
+export FZF_COMPLETION_TRIGGER='~~'
+
+# Options to fzf command
+export FZF_COMPLETION_OPTS='+c -x'
+```
+
+### zsh
+
+TODO :smiley:
+
+(Pull requests are appreciated.)
+
 Tips
 ----
 
@@ -231,6 +331,9 @@ Define fzf alias with the option as follows:
 alias fzf='ruby --disable-gems ~/bin/fzf'
 ```
 
+This is automatically set up in your .bashrc and .zshrc if you use the bundled
+[install](https://github.com/junegunn/fzf/blob/master/install) script.
+
 ### Incorrect display on Ruby 1.8
 
 It is reported that the output of fzf can become unreadable on some terminals

Rakefile

@@ -1 +1,8 @@
 require "bundler/gem_tasks"
+require 'rake/testtask'
+
+Rake::TestTask.new(:test) do |test|
+  test.pattern = 'test/**/test_*.rb'
+  test.verbose = true
+end
+

fzf-completion.bash

@@ -0,0 +1,116 @@
+#!/bin/bash
+#     ____      ____
+#    / __/___  / __/
+#   / /_/_  / / /_
+#  / __/ / /_/ __/
+# /_/   /___/_/-completion.bash
+#
+# - $FZF_COMPLETION_TRIGGER (default: '**')
+# - $FZF_COMPLETION_OPTS    (default: empty)
+
+_fzf_opts_completion() {
+  local cur prev opts
+  COMPREPLY=()
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  prev="${COMP_WORDS[COMP_CWORD-1]}"
+  opts="-m --multi -x --extended -s --sort +s +i +c --no-color"
+
+  case "${prev}" in
+  --sort|-s)
+    COMPREPLY=( $(compgen -W "$(seq 2000 1000 10000)" -- ${cur}) )
+    return 0
+    ;;
+  esac
+
+  if [[ ${cur} =~ ^-|\+ ]]; then
+    COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+    return 0
+  fi
+
+  return 0
+}
+
+_fzf_generic_completion() {
+  local cur prev opts base dir leftover matches
+  COMPREPLY=()
+  FZF_COMPLETION_TRIGGER=${FZF_COMPLETION_TRIGGER:-**}
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  prev="${COMP_WORDS[COMP_CWORD-1]}"
+  if [[ ${cur} == *"$FZF_COMPLETION_TRIGGER" ]]; then
+    base=${cur:0:${#cur}-${#FZF_COMPLETION_TRIGGER}}
+    eval base=$base
+
+    dir="$base"
+    while [ 1 ]; do
+      if [ -z "$dir" -o -d "$dir" ]; then
+        leftover=${base/#"$dir"}
+        leftover=${leftover/#\/}
+        [ "$dir" = './' ] && dir=''
+        matches=$(find "$dir"* $1 2> /dev/null | fzf $FZF_COMPLETION_OPTS $2 -q "$leftover" | while read item; do
+          if [[ ${item} =~ \  ]]; then
+            echo -n "\"$item\" "
+          else
+            echo -n "$item "
+          fi
+        done)
+        matches=${matches% }
+        if [ -n "$matches" ]; then
+          COMPREPLY=( "$matches" )
+        else
+          COMPREPLY=( "$cur" )
+        fi
+        return 0
+      fi
+      dir=$(dirname "$dir")
+      [[ "$dir" =~ /$ ]] || dir="$dir"/
+    done
+  fi
+}
+
+_fzf_all_completion() {
+  _fzf_generic_completion \
+    "-name .git -prune -o -name .svn -prune -o -type d -print -o -type f -print -o -type l -print" \
+    "-m"
+}
+
+_fzf_file_completion() {
+  _fzf_generic_completion \
+    "-name .git -prune -o -name .svn -prune -o -type f -print -o -type l -print" \
+    "-m"
+}
+
+_fzf_dir_completion() {
+  _fzf_generic_completion \
+    "-name .git -prune -o -name .svn -prune -o -type d -print" \
+    ""
+}
+
+complete -F _fzf_opts_completion fzf
+
+# Directory
+for cmd in "cd pushd rmdir"; do
+  complete -F _fzf_dir_completion -o default -o bashdefault $cmd
+done
+
+# File
+for cmd in "
+  awk cat diff diff3
+  emacs ex file ftp g++ gcc gvim head hg java
+  javac ld less more mvim patch perl python ruby
+  sed sftp sort source tail tee uniq vi view vim wc"; do
+  complete -F _fzf_file_completion -o default -o bashdefault $cmd
+done
+
+# Anything
+for cmd in "
+  basename bunzip2 bzip2 chmod chown curl cp dirname du
+  find git grep gunzip gzip hg jar
+  ln ls mv open rm rsync scp
+  svn tar unzip zip"; do
+  complete -F _fzf_all_completion -o default -o bashdefault $cmd
+done
+
+bind '"\e\e": complete'
+bind '"\er": redraw-current-line'
+bind '"\C-i": "\e\e\er"'
+

fzf-completion.zsh

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

fzf.gemspec

@@ -1,7 +1,7 @@
 # coding: utf-8
 Gem::Specification.new do |spec|
   spec.name          = 'fzf'
-  spec.version       = '0.3.1'
+  spec.version       = '0.5.0'
   spec.authors       = ['Junegunn Choi']
   spec.email         = ['junegunn.c@gmail.com']
   spec.description   = %q{Fuzzy finder for your shell}

install

@@ -1,7 +1,76 @@
 #!/bin/bash
 
 cd `dirname $BASH_SOURCE`
-mkdir -p ~/bin
-ln -sf `pwd`/fzf ~/bin/fzf
-chmod +x ~/bin/fzf
+FZF_BASE=`pwd`
+
+# ruby executable
+echo -n "Checking Ruby executable ... "
+RUBY=`which ruby`
+if [ $? -ne 0 ]; then
+  echo "ruby executable not found!"
+  exit 1
+fi
+echo "OK"
+
+# Curses-support
+echo -n "Checking Curses support ... "
+/usr/bin/env ruby -e "begin; require 'curses'; rescue Exception; exit 1; end"
+if [ $? -ne 0 ]; then
+  echo "Your ruby does not support 'curses'"
+  exit 1
+fi
+echo "OK"
+
+# Ruby version
+echo -n "Checking Ruby version ... "
+/usr/bin/env ruby -e 'exit RUBY_VERSION >= "1.9"'
+if [ $? -eq 0 ]; then
+  echo ">= 1.9"
+  FZF_ALIAS="alias fzf='$RUBY --disable-gems $FZF_BASE/fzf'"
+else
+  echo "< 1.9"
+  FZF_ALIAS="alias fzf='$RUBY $FZF_BASE/fzf' # fzf"
+fi
+
+# Auto-completion
+read -p "Do you want to add auto-completion support? (y/n) " -n 1 -r
+echo
+[[ ! $REPLY =~ ^[Nn]$ ]]
+AUTO_COMPLETION=$?
+
+echo
+for shell in bash zsh; do
+  rc=~/.${shell}rc
+  echo "Update $rc:"
+
+  # Install fzf alias
+  echo "- Add fzf alias:"
+  echo "  - $FZF_ALIAS"
+  if [ $(grep "alias fzf=" $rc | wc -l) -gt 0 ]; then
+    echo "    - (X) fzf alias already exists"
+  else
+    echo $FZF_ALIAS >> $rc
+    echo "    - Added."
+  fi
+
+  # Install auto-completion support
+  if [ $AUTO_COMPLETION -eq 0 ]; then
+    FZF_COMPLETION="source $FZF_BASE/fzf-completion.${shell}"
+    echo "- Add auto-completion support"
+    echo "  - $FZF_COMPLETION"
+    if [ $(grep "source.*fzf-completion" $rc | wc -l) -gt 0 ]; then
+      echo "    - (X) fzf-completion.${shell} already being sourced"
+    else
+      echo $FZF_COMPLETION >> $rc
+      echo "    - Added."
+    fi
+  fi
+  echo
+done
+
+echo "Finished. Reload your .bashrc or .zshrc to take effect."
+echo "   source ~/.bashrc  # bash"
+echo "   source ~/.zshrc   # zsh"
+echo
+echo "To uninstall fzf, simply remove the added lines."
 

plugin/fzf.vim

@@ -23,23 +23,37 @@
 
 let s:exec = expand('<sfile>:h:h').'/fzf'
 
-function! s:fzf(args)
+function! s:escape(path)
+  return substitute(a:path, ' ', '\\ ', 'g')
+endfunction
+
+function! fzf#run(command, ...)
+  let cwd = getcwd()
   try
-    let tf = tempname()
-    let prefix = exists('g:fzf_command') ? g:fzf_command.'|' : ''
-    let fzf = executable(s:exec) ? s:exec : 'fzf'
-    execute "silent !".prefix.fzf." ".a:args." > ".tf
+    let args = copy(a:000)
+    if len(args) > 0 && isdirectory(expand(args[-1]))
+      let dir = remove(args, -1)
+      execute 'chdir '.s:escape(dir)
+    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
-      let file = join(readfile(tf), '')
-      if !empty(file)
-        execute 'silent e '.file
-      endif
+      for line in readfile(tf)
+        if !empty(line)
+          execute a:command.' '.s:escape(line)
+        endif
+      endfor
     endif
   finally
-    silent! call delete(tf)
+    execute 'chdir '.s:escape(cwd)
     redraw!
+    silent! call delete(tf)
   endtry
 endfunction
 
-command! -nargs=* FZF call s:fzf(<q-args>)
+command! -nargs=* -complete=dir FZF call fzf#run('silent e', <f-args>)
 

test/test_fzf.rb

@@ -0,0 +1,336 @@
+#!/usr/bin/env ruby
+# encoding: utf-8
+
+require 'minitest/autorun'
+$LOAD_PATH.unshift File.expand_path('../..', __FILE__)
+ENV['FZF_EXECUTABLE'] = '0'
+load 'fzf'
+
+class TestFZF < MiniTest::Unit::TestCase
+  def test_default_options
+    fzf = FZF.new []
+    assert_equal 1000, fzf.sort
+    assert_equal false, fzf.multi
+    assert_equal true, fzf.color
+    assert_equal Regexp::IGNORECASE, fzf.rxflag
+
+    begin
+      ENV['FZF_DEFAULT_SORT'] = '1500'
+      fzf = FZF.new []
+      assert_equal 1500, fzf.sort
+    ensure
+      ENV.delete 'FZF_DEFAULT_SORT'
+    end
+  end
+
+  def test_option_parser
+    # Long opts
+    fzf = FZF.new %w[--sort=2000 --no-color --multi +i --query hello]
+    assert_equal 2000,    fzf.sort
+    assert_equal true,    fzf.multi
+    assert_equal false,   fzf.color
+    assert_equal 0,       fzf.rxflag
+    assert_equal 'hello', fzf.query.get
+
+    # Short opts
+    fzf = FZF.new %w[-s 2000 +c -m +i -qhello]
+    assert_equal 2000,    fzf.sort
+    assert_equal true,    fzf.multi
+    assert_equal false,   fzf.color
+    assert_equal 0,       fzf.rxflag
+    assert_equal 'hello', fzf.query.get
+
+    # Left-to-right
+    fzf = FZF.new %w[-qhello -s 2000 --no-sort -q world]
+    assert_equal nil,     fzf.sort
+    assert_equal 'world', fzf.query.get
+
+    fzf = FZF.new %w[--query hello +s -s 2000 --query=world]
+    assert_equal 2000,    fzf.sort
+    assert_equal 'world', fzf.query.get
+  rescue SystemExit => e
+    assert false, "Exited"
+  end
+
+  def test_invalid_option
+    [%w[--unknown], %w[yo dawg]].each do |argv|
+      assert_raises(SystemExit) do
+        fzf = FZF.new argv
+      end
+    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
+
+  def test_trim
+    fzf = FZF.new []
+    assert_equal ['사.',     6], fzf.trim('가나다라마바사.', 4, true)
+    assert_equal ['바사.',   5], fzf.trim('가나다라마바사.', 5, true)
+    assert_equal ['바사.',   5], fzf.trim('가나다라마바사.', 6, true)
+    assert_equal ['마바사.', 4], fzf.trim('가나다라마바사.', 7, true)
+    assert_equal ['가나',    6], fzf.trim('가나다라마바사.', 4, false)
+    assert_equal ['가나',    6], fzf.trim('가나다라마바사.', 5, false)
+    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
+
+  def test_format
+    fzf = FZF.new []
+    assert_equal [['01234..', false]], fzf.format('0123456789', 7, [])
+    assert_equal [['012', false], ['34', true], ['..', false]],
+      fzf.format('0123456789', 7, [[3, 5]])
+    assert_equal [['..56', false], ['789', true]],
+      fzf.format('0123456789', 7, [[7, 10]])
+    assert_equal [['..56', false], ['78', true], ['9', false]],
+      fzf.format('0123456789', 7, [[7, 9]])
+
+    (3..5).each do |i|
+      assert_equal [['..', false], ['567', true], ['89', false]],
+        fzf.format('0123456789', 7, [[i, 8]])
+    end
+
+    assert_equal [['..', false], ['345', true], ['..', false]],
+      fzf.format('0123456789', 7, [[3, 6]])
+    assert_equal [['012', false], ['34', true], ['..', false]],
+      fzf.format('0123456789', 7, [[3, 5]])
+
+    # Multi-region
+    assert_equal [["0", true], ["1", false], ["2", true], ["34..", false]],
+      fzf.format('0123456789', 7, [[0, 1], [2, 3]])
+
+    assert_equal [["..", false], ["5", true], ["6", false], ["78", true], ["9", false]],
+      fzf.format('0123456789', 7, [[3, 6], [7, 9]])
+
+    assert_equal [["..", false], ["3", true], ["4", false], ["5", true], ["..", false]],
+      fzf.format('0123456789', 7, [[3, 4], [5, 6]])
+
+    # Multi-region Overlap
+    assert_equal [["..", false], ["345", true], ["..", false]],
+      fzf.format('0123456789', 7, [[4, 5], [3, 6]])
+  end
+
+  def test_fuzzy_matcher
+    matcher = FZF::FuzzyMatcher.new Regexp::IGNORECASE
+    list = %w[
+      juice
+      juiceful
+      juiceless
+      juicily
+      juiciness
+      juicy]
+    assert matcher.caches.empty?
+    assert_equal(
+      [["juice",     [[0, 1]]],
+       ["juiceful",  [[0, 1]]],
+       ["juiceless", [[0, 1]]],
+       ["juicily",   [[0, 1]]],
+       ["juiciness", [[0, 1]]],
+       ["juicy",     [[0, 1]]]], matcher.match(list, 'j', '', '').sort)
+    assert !matcher.caches.empty?
+    assert_equal [list.object_id], matcher.caches.keys
+    assert_equal 1, matcher.caches[list.object_id].length
+    assert_equal 6, matcher.caches[list.object_id]['j'].length
+
+    assert_equal(
+      [["juicily",   [[0, 5]]],
+       ["juiciness", [[0, 5]]]], matcher.match(list, 'jii', '', '').sort)
+
+    assert_equal(
+      [["juicily",   [[2, 5]]],
+       ["juiciness", [[2, 5]]]], matcher.match(list, 'ii', '', '').sort)
+
+    assert_equal 3, matcher.caches[list.object_id].length
+    assert_equal 2, matcher.caches[list.object_id]['ii'].length
+
+    # TODO : partial_cache
+  end
+
+  def test_fuzzy_matcher_case_sensitive
+    assert_equal [['Fruit', [[0, 5]]]],
+      FZF::FuzzyMatcher.new(0).match(%w[Fruit Grapefruit], 'Fruit', '', '').sort
+
+    assert_equal [["Fruit", [[0, 5]]], ["Grapefruit", [[5, 10]]]],
+      FZF::FuzzyMatcher.new(Regexp::IGNORECASE).
+      match(%w[Fruit Grapefruit], 'Fruit', '', '').sort
+  end
+
+  def test_extended_fuzzy_matcher
+    matcher = FZF::ExtendedFuzzyMatcher.new Regexp::IGNORECASE
+    list = %w[
+      juice
+      juiceful
+      juiceless
+      juicily
+      juiciness
+      juicy
+      _juice]
+    match = proc { |q, prefix|
+      matcher.match(list, q, prefix, '').sort.map { |p| [p.first, p.last.sort] }
+    }
+
+    assert matcher.caches.empty?
+    3.times do
+      ['y j', 'j y'].each do |pat|
+        (0..pat.length - 1).each do |prefix_length|
+          prefix = pat[0, prefix_length]
+          assert_equal(
+            [["juicily", [[0, 1], [6, 7]]],
+             ["juicy",   [[0, 1], [4, 5]]]],
+            match.call(pat, prefix))
+        end
+      end
+
+      # $
+      assert_equal [["juiceful",  [[7, 8]]]], match.call('l$', '')
+      assert_equal [["juiceful",  [[7, 8]]],
+                    ["juiceless", [[5, 6]]],
+                    ["juicily",   [[5, 6]]]], match.call('l', '')
+
+      # ^
+      assert_equal list.length,     match.call('j', '').length
+      assert_equal list.length - 1, match.call('^j', '').length
+
+      # !
+      assert_equal 0, match.call('!j', '').length
+
+      # ! + ^
+      assert_equal [["_juice", []]], match.call('!^j', '')
+
+      # ! + $
+      assert_equal list.length - 1, match.call('!l$', '').length
+
+      # ! + f
+      assert_equal [["juicy", [[4, 5]]]], match.call('y !l', '')
+
+      # '
+      assert_equal %w[juiceful juiceless juicily],
+        match.call('il', '').map { |e| e.first }
+      assert_equal %w[juicily],
+        match.call("'il", '').map { |e| e.first }
+      assert_equal (list - %w[juicily]).sort,
+        match.call("!'il", '').map { |e| e.first }.sort
+    end
+    assert !matcher.caches.empty?
+  end
+
+  def test_xfuzzy_matcher_prefix_cache
+    matcher = FZF::ExtendedFuzzyMatcher.new Regexp::IGNORECASE
+    list = %w[
+      a.java
+      b.java
+      java.jive
+      c.java$
+      d.java
+    ]
+    2.times do
+      assert_equal 5, matcher.match(list, 'java',   'java',   '').length
+      assert_equal 3, matcher.match(list, 'java$',  'java$',  '').length
+      assert_equal 1, matcher.match(list, 'java$$', 'java$$', '').length
+
+      assert_equal 0, matcher.match(list, '!java',  '!java',  '').length
+      assert_equal 4, matcher.match(list, '!^jav',  '!^jav',  '').length
+      assert_equal 4, matcher.match(list, '!^java', '!^java', '').length
+      assert_equal 2, matcher.match(list, '!^java !b !c', '!^java', '').length
+    end
+  end
+
+  def test_sort_by_rank
+    matcher  = FZF::FuzzyMatcher.new Regexp::IGNORECASE
+    xmatcher = FZF::ExtendedFuzzyMatcher.new Regexp::IGNORECASE
+    list = %w[
+      0____1
+      0_____1
+      01
+      ____0_1
+      01_
+      _01_
+      0______1
+      ___01___
+    ]
+    assert_equal(
+      [["01",       [[0, 2]]],
+       ["01_",      [[0, 2]]],
+       ["_01_",     [[1, 3]]],
+       ["___01___", [[3, 5]]],
+       ["____0_1",  [[4, 7]]],
+       ["0____1",   [[0, 6]]],
+       ["0_____1",  [[0, 7]]],
+       ["0______1", [[0, 8]]]],
+      FZF.new([]).sort_by_rank(matcher.match(list, '01', '', '')))
+
+    assert_equal(
+      [["01",       [[0, 1], [1, 2]]],
+       ["01_",      [[0, 1], [1, 2]]],
+       ["_01_",     [[1, 2], [2, 3]]],
+       ["0____1",   [[0, 1], [5, 6]]],
+       ["0_____1",  [[0, 1], [6, 7]]],
+       ["____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', '', '')))
+
+    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 __', '', '')))
+  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
+end
+