0.15.1

Related #666

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,29 @@
+<!-- Check all that apply [x] -->
+- Category
+    - [ ] fzf binary
+    - [ ] fzf-tmux script
+    - [ ] Key bindings
+    - [ ] Completion
+    - [ ] Vim
+    - [ ] Neovim
+    - [ ] Etc.
+- OS
+    - [ ] Linux
+    - [ ] Mac OS X
+    - [ ] Windows
+    - [ ] Etc.
+- Shell
+    - [ ] bash
+    - [ ] zsh
+    - [ ] fish
+
+<!--
+### Before submitting
+
+- Make sure that you have the latest version of fzf
+- If you use tmux, make sure $TERM is set to screen or screen-256color
+- For more Vim stuff, check out https://github.com/junegunn/fzf.vim
+
+Describe your problem or suggestion from here ...
+-->
+

.gitignore

@@ -1,5 +1,6 @@
 bin
-src/fzf/fzf_*
+src/fzf/fzf-*
+gopath
 pkg
 Gemfile.lock
 .DS_Store

.travis.yml

@@ -4,7 +4,7 @@ rvm:
 
 install:
 - sudo apt-get update
-- sudo apt-get install -y libncurses-dev lib32ncurses5-dev
+- sudo apt-get install -y libncurses-dev lib32ncurses5-dev libgpm-dev
 - sudo add-apt-repository -y ppa:pi-rho/dev
 - sudo apt-add-repository -y ppa:fish-shell/release-2
 - sudo apt-get update

CHANGELOG.md

@@ -1,6 +1,293 @@
 CHANGELOG
 =========
 
+0.15.1
+------
+- Fixed panic when the pattern occurs after 2^15-th column
+- Fixed rendering delay when displaying extremely long lines
+
+0.15.0
+------
+- Improved fuzzy search algorithm
+    - Added `--algo=[v1|v2]` option so one can still choose the old algorithm
+      which values the search performance over the quality of the result
+- Advanced scoring criteria
+- `--read0` to read input delimited by ASCII NUL character
+- `--print0` to print output delimited by ASCII NUL character
+
+0.13.5
+------
+- Memory and performance optimization
+    - Up to 2x performance with half the amount of memory
+
+0.13.4
+------
+- Performance optimization
+    - Memory footprint for ascii string is reduced by 60%
+    - 15 to 20% improvement of query performance
+    - Up to 45% better performance of `--nth` with non-regex delimiters
+- Fixed invalid handling of `hidden` property of `--preview-window`
+
+0.13.3
+------
+- Fixed duplicate rendering of the last line in preview window
+
+0.13.2
+------
+- Fixed race condition where preview window is not properly cleared
+
+0.13.1
+------
+- Fixed UI issue with large `--preview` output with many ANSI codes
+
+0.13.0
+------
+- Added preview feature
+    - `--preview CMD`
+    - `--preview-window POS[:SIZE][:hidden]`
+- `{}` in execute action is now replaced to the single-quoted (instead of
+  double-quoted) string of the current line
+- Fixed to ignore control characters for bracketed paste mode
+
+0.12.2
+------
+
+- 256-color capability detection does not require `256` in `$TERM`
+- Added `print-query` action
+- More named keys for binding; <kbd>F1</kbd> ~ <kbd>F10</kbd>,
+  <kbd>ALT-/</kbd>, <kbd>ALT-space</kbd>, and <kbd>ALT-enter</kbd>
+- Added `jump` and `jump-accept` actions that implement [EasyMotion][em]-like
+  movement
+  ![][jump]
+
+[em]: https://github.com/easymotion/vim-easymotion
+[jump]: https://cloud.githubusercontent.com/assets/700826/15367574/b3999dc4-1d64-11e6-85da-28ceeb1a9bc2.png
+
+0.12.1
+------
+
+- Ranking algorithm introduced in 0.12.0 is now universally applied
+- Fixed invalid cache reference in exact mode
+- Fixes and improvements in Vim plugin and shell extensions
+
+0.12.0
+------
+
+- Enhanced ranking algorithm
+- Minor bug fixes
+
+0.11.4
+------
+
+- Added `--hscroll-off=COL` option (default: 10) (#513)
+- Some fixes in Vim plugin and shell extensions
+
+0.11.3
+------
+
+- Graceful exit on SIGTERM (#482)
+- `$SHELL` instead of `sh` for `execute` action and `$FZF_DEFAULT_COMMAND` (#481)
+- Changes in fuzzy completion API
+    - [`_fzf_compgen_{path,dir}`](https://github.com/junegunn/fzf/commit/9617647)
+    - [`_fzf_complete_COMMAND_post`](https://github.com/junegunn/fzf/commit/8206746)
+      for post-processing
+
+0.11.2
+------
+
+- `--tiebreak` now accepts comma-separated list of sort criteria
+    - Each criterion should appear only once in the list
+    - `index` is only allowed at the end of the list
+    - `index` is implicitly appended to the list when not specified
+    - Default is `length` (or equivalently `length,index`)
+- `begin` criterion will ignore leading whitespaces when calculating the index
+- Added `toggle-in` and `toggle-out` actions
+    - Switch direction depending on `--reverse`-ness
+    - `export FZF_DEFAULT_OPTS="--bind tab:toggle-out,shift-tab:toggle-in"`
+- Reduced the initial delay when `--tac` is not given
+    - fzf defers the initial rendering of the screen up to 100ms if the input
+      stream is ongoing to prevent unnecessary redraw during the initial
+      phase. However, 100ms delay is quite noticeable and might give the
+      impression that fzf is not snappy enough. This commit reduces the
+      maximum delay down to 20ms when `--tac` is not specified, in which case
+      the input list quickly fills the entire screen.
+
+0.11.1
+------
+
+- Added `--tabstop=SPACES` option
+
+0.11.0
+------
+
+- Added OR operator for extended-search mode
+- Added `--execute-multi` action
+- Fixed incorrect cursor position when unicode wide characters are used in
+  `--prompt`
+- Fixes and improvements in shell extensions
+
+0.10.9
+------
+
+- Extended-search mode is now enabled by default
+    - `--extended-exact` is deprecated and instead we have `--exact` for
+      orthogonally controlling "exactness" of search
+- Fixed not to display non-printable characters
+- Added `double-click` for `--bind` option
+- More robust handling of SIGWINCH
+
+0.10.8
+------
+
+- Fixed panic when trying to set colors after colors are disabled (#370)
+
+0.10.7
+------
+
+- Fixed unserialized interrupt handling during execute action which often
+  caused invalid memory access and crash
+- Changed `--tiebreak=length` (default) to use trimmed length when `--nth` is
+  used
+
+0.10.6
+------
+
+- Replaced `--header-file` with `--header` option
+- `--header` and `--header-lines` can be used together
+- Changed exit status
+    - 0: Okay
+    - 1: No match
+    - 2: Error
+    - 130: Interrupted
+- 64-bit linux binary is statically-linked with ncurses to avoid
+  compatibility issues.
+
+0.10.5
+------
+
+- `'`-prefix to unquote the term in `--extended-exact` mode
+- Backward scan when `--tiebreak=end` is set
+
+0.10.4
+------
+
+- Fixed to remove ANSI code from output when `--with-nth` is set
+
+0.10.3
+------
+
+- Fixed slow performance of `--with-nth` when used with `--delimiter`
+    - Regular expression engine of Golang as of now is very slow, so the fixed
+      version will treat the given delimiter pattern as a plain string instead
+      of a regular expression unless it contains special characters and is
+      a valid regular expression.
+    - Simpler regular expression for delimiter for better performance
+
+0.10.2
+------
+
+### Fixes and improvements
+
+- Improvement in perceived response time of queries
+    - Eager, efficient rune array conversion
+- Graceful exit when failed to initialize ncurses (invalid $TERM)
+- Improved ranking algorithm when `--nth` option is set
+- Changed the default command not to fail when there are files whose names
+  start with dash
+
+0.10.1
+------
+
+### New features
+
+- Added `--margin` option
+- Added options for sticky header
+    - `--header-file`
+    - `--header-lines`
+- Added `cancel` action which clears the input or closes the finder when the
+  input is already empty
+    - e.g. `export FZF_DEFAULT_OPTS="--bind esc:cancel"`
+- Added `delete-char/eof` action to differentiate `CTRL-D` and `DEL`
+
+### Minor improvements/fixes
+
+- Fixed to allow binding colon and comma keys
+- Fixed ANSI processor to handle color regions spanning multiple lines
+
+0.10.0
+------
+
+### New features
+
+- More actions for `--bind`
+    - `select-all`
+    - `deselect-all`
+    - `toggle-all`
+    - `ignore`
+- `execute(...)` action for running arbitrary command without leaving fzf
+    - `fzf --bind "ctrl-m:execute(less {})"`
+    - `fzf --bind "ctrl-t:execute(tmux new-window -d 'vim {}')"`
+    - If the command contains parentheses, use any of the follows alternative
+      notations to avoid parse errors
+        - `execute[...]`
+        - `execute~...~`
+        - `execute!...!`
+        - `execute@...@`
+        - `execute#...#`
+        - `execute$...$`
+        - `execute%...%`
+        - `execute^...^`
+        - `execute&...&`
+        - `execute*...*`
+        - `execute;...;`
+        - `execute/.../`
+        - `execute|...|`
+        - `execute:...`
+            - This is the special form that frees you from parse errors as it
+              does not expect the closing character
+            - The catch is that it should be the last one in the
+              comma-separated list
+- Added support for optional search history
+    - `--history HISTORY_FILE`
+        - When used, `CTRL-N` and `CTRL-P` are automatically remapped to
+          `next-history` and `previous-history`
+    - `--history-size MAX_ENTRIES` (default: 1000)
+- Cyclic scrolling can be enabled with `--cycle`
+- Fixed the bug where the spinner was not spinning on idle input stream
+    - e.g. `sleep 100 | fzf`
+
+### Minor improvements/fixes
+
+- Added synonyms for key names that can be specified for `--bind`,
+  `--toggle-sort`, and `--expect`
+- Fixed the color of multi-select marker on the current line
+- Fixed to allow `^pattern$` in extended-search mode
+
+
+0.9.13
+------
+
+### New features
+
+- Color customization with the extended `--color` option
+
+### Bug fixes
+
+- Fixed premature termination of Reader in the presence of a long line which
+  is longer than 64KB
+
+0.9.12
+------
+
+### New features
+
+- Added `--bind` option for custom key bindings
+
+### Bug fixes
+
+- Fixed to update "inline-info" immediately after terminal resize
+- Fixed ANSI code offset calculation
+
 0.9.11
 ------
 

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015 Junegunn Choi
+Copyright (c) 2016 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,4 +1,4 @@
-<img src="https://raw.githubusercontent.com/junegunn/i/master/fzf.png" height="170" alt="fzf - a command-line fuzzy finder"> [![travis-ci](https://travis-ci.org/junegunn/fzf.svg?branch=master)](https://travis-ci.org/junegunn/fzf) <a href="http://flattr.com/thing/3115381/junegunnfzf-on-GitHub" target="_blank"><img src="http://api.flattr.com/button/flattr-badge-large.png" alt="Flattr this" title="Flattr this" border="0" /></a>
+<img src="https://raw.githubusercontent.com/junegunn/i/master/fzf.png" height="170" alt="fzf - a command-line fuzzy finder"> [![travis-ci](https://travis-ci.org/junegunn/fzf.svg?branch=master)](https://travis-ci.org/junegunn/fzf)
 ===
 
 fzf is a general-purpose command-line fuzzy finder.
@@ -8,34 +8,31 @@ fzf is a general-purpose command-line fuzzy finder.
 Pros
 ----
 
-- No dependency
+- No dependencies
 - Blazingly fast
-    - e.g. `locate / | fzf`
-- Flexible layout
-    - Runs in fullscreen or in horizontal/vertical split using tmux
 - The most comprehensive feature set
-    - Try `fzf --help` and be surprised
+- Flexible layout using tmux panes
 - Batteries included
     - Vim/Neovim plugin, key bindings and fuzzy auto-completion
 
 Installation
 ------------
 
-fzf project consists of the followings:
+fzf project consists of the following components:
 
 - `fzf` executable
 - `fzf-tmux` script for launching fzf in a tmux pane
 - Shell extensions
     - Key bindings (`CTRL-T`, `CTRL-R`, and `ALT-C`) (bash, zsh, fish)
-    - Fuzzy auto-completion (bash only)
+    - Fuzzy auto-completion (bash, zsh)
 - Vim/Neovim plugin
 
-You can [download fzf executable][bin] alone, but it's recommended that you
-install the extra stuff using the attached install script.
+You can [download fzf executable][bin] alone if you don't need the extra
+stuff.
 
 [bin]: https://github.com/junegunn/fzf-bin/releases
 
-#### Using git (recommended)
+### Using git
 
 Clone this repository and run
 [install](https://github.com/junegunn/fzf/blob/master/install) script.
@@ -45,40 +42,44 @@ git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf
 ~/.fzf/install
 ```
 
-#### Using Homebrew
+### Using Homebrew
 
 On OS X, you can use [Homebrew](http://brew.sh/) to install fzf.
 
 ```sh
-brew reinstall --HEAD fzf
+brew install fzf
 
 # Install shell extensions
-/usr/local/Cellar/fzf/HEAD/install
+/usr/local/opt/fzf/install
 ```
 
-#### Install as Vim plugin
+### Vim plugin
 
-Once you have cloned the repository, add the following line to your .vimrc.
+You can manually add the directory to `&runtimepath` as follows,
 
 ```vim
+" If installed using git
 set rtp+=~/.fzf
+
+" If installed using Homebrew
+set rtp+=/usr/local/opt/fzf
 ```
 
-Or you can have [vim-plug](https://github.com/junegunn/vim-plug) manage fzf
-(recommended):
+But it's recommended that you use a plugin manager like
+[vim-plug](https://github.com/junegunn/vim-plug).
 
 ```vim
-Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': 'yes \| ./install' }
+Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
 ```
 
-#### Upgrading fzf
+### Upgrading fzf
 
 fzf is being actively developed and you might want to upgrade it once in a
 while. Please follow the instruction below depending on the installation
-method.
+method used.
 
 - git: `cd ~/.fzf && git pull && ./install`
-- brew: `brew reinstall --HEAD fzf`
+- brew: `brew update; brew reinstall fzf`
 - vim-plug: `:PlugUpdate fzf`
 
 Usage
@@ -108,24 +109,41 @@ vim $(fzf)
 - Mouse: scroll, click, double-click; shift-click and shift-scroll on
   multi-select mode
 
-#### Extended-search mode
+#### Search syntax
 
-With `-x` or `--extended` option, fzf will start in "extended-search mode".
+Unless otherwise specified, fzf starts in "extended-search mode" where you can
+type in multiple search terms delimited by spaces. e.g. `^music .mp3$ sbtrkt
+!rmx`
 
-In this mode, you can specify multiple patterns delimited by spaces,
-such as: `^music .mp3$ sbtrkt !rmx`
+| Token    | Match type           | Description                      |
+| -------- | -------------------- | -------------------------------- |
+| `sbtrkt` | fuzzy-match          | Items that match `sbtrkt`        |
+| `^music` | prefix-exact-match   | Items that start with `music`    |
+| `.mp3$`  | suffix-exact-match   | Items that end with `.mp3`       |
+| `'wild`  | exact-match (quoted) | Items that include `wild`        |
+| `!rmx`   | inverse-fuzzy-match  | Items that do not match `rmx`    |
+| `!'fire` | inverse-exact-match  | Items that do not include `fire` |
 
-| 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  |
+If you don't prefer fuzzy matching and do not wish to "quote" every word,
+start fzf with `-e` or `--exact` option. Note that when  `--exact` is set,
+`'`-prefix "unquotes" the term.
 
-If you don't need fuzzy matching and do not wish to "quote" every word, start
-fzf with `-e` or `--extended-exact` option.
+A single bar character term acts as an OR operator. For example, the following
+query matches entries that start with `core` and end with either `go`, `rb`,
+or `py`.
+
+```
+^core go$ | rb$ | py$
+```
+
+#### Environment variables
+
+- `FZF_DEFAULT_COMMAND`
+    - Default command to use when input is tty
+    - e.g. `export FZF_DEFAULT_COMMAND='ag -g ""'`
+- `FZF_DEFAULT_OPTS`
+    - Default options
+    - e.g. `export FZF_DEFAULT_OPTS="--reverse --inline-info"`
 
 Examples
 --------
@@ -134,26 +152,6 @@ Many useful examples can be found on [the wiki
 page](https://github.com/junegunn/fzf/wiki/examples). Feel free to add your
 own as well.
 
-Key bindings for command line
------------------------------
-
-The install script will setup the following key bindings for bash, zsh, and
-fish.
-
-- `CTRL-T` - Paste the selected file path(s) into the command line
-- `CTRL-R` - Paste the selected command from history into the command line
-    - Sort is disabled by default to respect chronological ordering
-    - Press `CTRL-R` again to toggle sort
-- `ALT-C` - cd into the selected directory
-
-If you're on a tmux session, fzf will start in a split pane. You may disable
-this tmux integration by setting `FZF_TMUX` to 0, or change the height of the
-pane with `FZF_TMUX_HEIGHT` (e.g. `20`, `50%`).
-
-If you use vi mode on bash, you need to add `set -o vi` *before* `source
-~/.fzf.bash` in your .bashrc, so that it correctly sets up key bindings for vi
-mode.
-
 `fzf-tmux` script
 -----------------
 
@@ -173,8 +171,33 @@ cat /usr/share/dict/words | fzf-tmux -l 20% --multi --reverse
 It will still work even when you're not on tmux, silently ignoring `-[udlr]`
 options, so you can invariably use `fzf-tmux` in your scripts.
 
-Fuzzy completion for bash
--------------------------
+Key bindings for command line
+-----------------------------
+
+The install script will setup the following key bindings for bash, zsh, and
+fish.
+
+- `CTRL-T` - Paste the selected files and directories onto the command line
+    - Set `FZF_CTRL_T_COMMAND` to override the default command
+    - Set `FZF_CTRL_T_OPTS` to pass additional options
+- `CTRL-R` - Paste the selected command from history onto the command line
+    - Sort is disabled by default to respect chronological ordering
+    - Press `CTRL-R` again to toggle sort
+    - Set `FZF_CTRL_R_OPTS` to pass additional options
+- `ALT-C` - cd into the selected directory
+    - Set `FZF_ALT_C_COMMAND` to override the default command
+    - Set `FZF_ALT_C_OPTS` to pass additional options
+
+If you're on a tmux session, fzf will start in a split pane. You may disable
+this tmux integration by setting `FZF_TMUX` to 0, or change the height of the
+pane with `FZF_TMUX_HEIGHT` (e.g. `20`, `50%`).
+
+If you use vi mode on bash, you need to add `set -o vi` *before* `source
+~/.fzf.bash` in your .bashrc, so that it correctly sets up key bindings for vi
+mode.
+
+Fuzzy completion for bash and zsh
+---------------------------------
 
 #### Files and directories
 
@@ -241,11 +264,33 @@ export FZF_COMPLETION_TRIGGER='~~'
 
 # Options to fzf command
 export FZF_COMPLETION_OPTS='+c -x'
+
+# Use ag instead of the default find command for listing candidates.
+# - The first argument to the function is the base path to start traversal
+# - Note that ag only lists files not directories
+# - See the source code (completion.{bash,zsh}) for the details.
+_fzf_compgen_path() {
+  ag -g "" "$1"
+}
+```
+
+#### Supported commands
+
+On bash, fuzzy completion is enabled only for a predefined set of commands
+(`complete | grep _fzf` to see the list). But you can enable it for other
+commands as well like follows.
+
+```sh
+# There are also _fzf_path_completion and _fzf_dir_completion
+complete -F _fzf_file_completion -o default -o bashdefault doge
 ```
 
 Usage as Vim plugin
 -------------------
 
+This repository only enables basic integration with Vim. If you're looking for
+more, check out [fzf.vim](https://github.com/junegunn/fzf.vim) project.
+
 (Note: To use fzf in GVim, an external terminal emulator is required.)
 
 #### `:FZF[!]`
@@ -276,12 +321,10 @@ customization.
 
 [fzf-config]: https://github.com/junegunn/fzf/wiki/Configuring-FZF-command-(vim)
 
-#### `fzf#run([options])`
+#### `fzf#run`
 
-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:
+For more advanced uses, you can use `fzf#run([options])` function with the
+following options.
 
 | Option name                | Type          | Description                                                      |
 | -------------------------- | ------------- | ---------------------------------------------------------------- |
@@ -294,75 +337,29 @@ of the selected items.
 | `dir`                      | string        | Working directory                                                |
 | `up`/`down`/`left`/`right` | number/string | Use tmux pane with the given size (e.g. `20`, `50%`)             |
 | `window` (*Neovim only*)   | string        | Command to open fzf window (e.g. `vertical aboveleft 30new`)     |
-| `launcher`                 | string        | External terminal emulator to start fzf with (Only used in GVim) |
+| `launcher`                 | string        | External terminal emulator to start fzf with (GVim only)         |
+| `launcher`                 | funcref       | Function for generating `launcher` string (GVim only)            |
 
-_However on Neovim `fzf#run` is asynchronous and does not return values so you
-should use `sink` or `sink*` to process the output from fzf._
-
-##### Examples
-
-If `sink` option is not given, `fzf#run` will simply return the list.
-
-```vim
-let items = fzf#run({ 'options': '-m +c', 'dir': '~', 'source': 'ls' })
-```
-
-But if `sink` is given as a string, the command will be executed for each
-selected item.
-
-```vim
-" Each selected item will be opened in a new tab
-let items = fzf#run({ 'sink': 'tabe', 'options': '-m +c', 'dir': '~', 'source': 'ls' })
-```
-
-We can also use a Vim list as the source as follows:
-
-```vim
-" Choose a color scheme with fzf
-nnoremap <silent> <Leader>C :call fzf#run({
-\   'source':
-\     map(split(globpath(&rtp, "colors/*.vim"), "\n"),
-\         "substitute(fnamemodify(v:val, ':t'), '\\..\\{-}$', '', '')"),
-\   'sink':     'colo',
-\   'options':  '+m',
-\   'left':     20,
-\   'launcher': 'xterm -geometry 20x30 -e bash -ic %s'
-\ })<CR>
-```
-
-`sink` option can be a function reference. The following example creates a
-handy mapping that selects an open buffer.
-
-```vim
-" List of buffers
-function! s:buflist()
-  redir => ls
-  silent ls
-  redir END
-  return split(ls, '\n')
-endfunction
-
-function! s:bufopen(e)
-  execute 'buffer' matchstr(a:e, '^[ 0-9]*')
-endfunction
-
-nnoremap <silent> <Leader><Enter> :call fzf#run({
-\   'source':  reverse(<sid>buflist()),
-\   'sink':    function('<sid>bufopen'),
-\   'options': '+m',
-\   'down':    len(<sid>buflist()) + 2
-\ })<CR>
-```
-
-More examples can be found on [the wiki
+Examples can be found on [the wiki
 page](https://github.com/junegunn/fzf/wiki/Examples-(vim)).
 
+#### `fzf#wrap`
+
+`fzf#wrap([name string,] [opts dict,] [fullscreen boolean])` is a helper
+function that decorates the options dictionary so that it understands
+`g:fzf_layout`, `g:fzf_action`, and `g:fzf_history_dir` like `:FZF`.
+
+```vim
+command! -bang MyStuff
+  \ call fzf#run(fzf#wrap('my-stuff', {'dir': '~/my-stuff'}, <bang>0))
+```
+
 Tips
 ----
 
 #### Rendering issues
 
-If you have any rendering issues, check the followings:
+If you have any rendering issues, check the following:
 
 1. Make sure `$TERM` is correctly set. fzf will use 256-color only if it
    contains `256` (e.g. `xterm-256color`)
@@ -382,13 +379,22 @@ filtering:
 
 ```sh
 # Feed the output of ag into fzf
-ag -l -g "" | fzf
+ag -g "" | fzf
 
 # Setting ag as the default source for fzf
-export FZF_DEFAULT_COMMAND='ag -l -g ""'
+export FZF_DEFAULT_COMMAND='ag -g ""'
 
 # Now fzf (w/o pipe) will use ag instead of find
 fzf
+
+# To apply the command to CTRL-T as well
+export FZF_CTRL_T_COMMAND="$FZF_DEFAULT_COMMAND"
+```
+
+If you don't want to exclude hidden files, use the following command:
+
+```sh
+export FZF_DEFAULT_COMMAND='ag --hidden --ignore .git -g ""'
 ```
 
 #### `git ls-tree` for fast traversal
@@ -399,7 +405,8 @@ speed of the traversal.
 ```sh
 export FZF_DEFAULT_COMMAND='
   (git ls-tree -r --name-only HEAD ||
-   find * -name ".*" -prune -o -type f -print -o -type l -print) 2> /dev/null'
+   find . -path "*/\.*" -prune -o -type f -print -o -type l -print |
+      sed s/^..//) 2> /dev/null'
 ```
 
 #### Fish shell
@@ -413,14 +420,6 @@ of fzf to a temporary file.
 fzf > $TMPDIR/fzf.result; and vim (cat $TMPDIR/fzf.result)
 ```
 
-#### 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
 -------
 

bin/fzf-tmux

@@ -2,24 +2,51 @@
 # fzf-tmux: starts fzf in a tmux pane
 # usage: fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
 
+fail() {
+  >&2 echo "$1"
+  exit 2
+}
+
+fzf="$(command -v fzf 2> /dev/null)" || fzf="$(dirname "$0")/fzf"
+[[ -x "$fzf" ]] || fail 'fzf executable not found'
+
 args=()
 opt=""
 skip=""
 swap=""
 close=""
 term=""
-while [ $# -gt 0 ]; do
+[[ -n "$LINES" ]] && lines=$LINES || lines=$(tput lines)
+
+help() {
+  >&2 echo 'usage: fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
+
+  Layout
+    -u [HEIGHT[%]]  Split above (up)
+    -d [HEIGHT[%]]  Split below (down)
+    -l [WIDTH[%]]   Split left
+    -r [WIDTH[%]]   Split right
+
+    (default: -d 50%)
+'
+  exit
+}
+
+while [[ $# -gt 0 ]]; do
   arg="$1"
-  case "$arg" in
+  shift
+  [[ -z "$skip" ]] && case "$arg" in
     -)
       term=1
       ;;
+    --help)
+      help
+      ;;
+    --version)
+      echo "fzf-tmux (with fzf $("$fzf" --version))"
+      exit
+      ;;
     -w*|-h*|-d*|-u*|-r*|-l*)
-      if [ -n "$skip" ]; then
-        args+=("$1")
-        shift
-        continue
-      fi
       if [[ "$arg" =~ ^.[lrw] ]]; then
         opt="-h"
         if [[ "$arg" =~ ^.l ]]; then
@@ -35,35 +62,33 @@ while [ $# -gt 0 ]; do
           close="; tmux swap-pane -D"
         fi
       fi
-      if [ ${#arg} -gt 2 ]; then
+      if [[ ${#arg} -gt 2 ]]; then
         size="${arg:2}"
       else
-        shift
         if [[ "$1" =~ ^[0-9]+%?$ ]]; then
           size="$1"
-        else
-          [ -n "$1" -a "$1" != "--" ] && args+=("$1")
           shift
+        else
           continue
         fi
       fi
 
       if [[ "$size" =~ %$ ]]; then
         size=${size:0:((${#size}-1))}
-        if [ -n "$swap" ]; then
+        if [[ -n "$swap" ]]; then
           opt="$opt -p $(( 100 - size ))"
         else
           opt="$opt -p $size"
         fi
       else
-        if [ -n "$swap" ]; then
+        if [[ -n "$swap" ]]; then
           if [[ "$arg" =~ ^.l ]]; then
-            [ -n "$COLUMNS" ] && max=$COLUMNS || max=$(tput cols)
+            [[ -n "$COLUMNS" ]] && max=$COLUMNS || max=$(tput cols)
           else
-            [ -n "$LINES" ] && max=$LINES || max=$(tput lines)
+            max=$lines
           fi
           size=$(( max - size ))
-          [ $size -lt 0 ] && size=0
+          [[ $size -lt 0 ]] && size=0
           opt="$opt -l $size"
         else
           opt="$opt -l $size"
@@ -74,63 +99,81 @@ while [ $# -gt 0 ]; do
       # "--" can be used to separate fzf-tmux options from fzf options to
       # avoid conflicts
       skip=1
+      continue
       ;;
     *)
-      args+=("$1")
+      args+=("$arg")
       ;;
   esac
-  shift
+  [[ -n "$skip" ]] && args+=("$arg")
 done
 
-if [ -z "$TMUX_PANE" ]; then
-  fzf "${args[@]}"
+if [[ -z "$TMUX" ]] || [[ "$lines" -le 15 ]]; then
+  "$fzf" "${args[@]}"
   exit $?
 fi
 
+# Handle zoomed tmux pane by moving it to a temp window
+if tmux list-panes -F '#F' | grep -q Z; then
+  zoomed=1
+  original_window=$(tmux display-message -p "#{window_id}")
+  tmp_window=$(tmux new-window -d -P -F "#{window_id}" "bash -c 'while :; do for c in \\| / - \\\\; do sleep 0.2; printf \"\\r\$c fzf-tmux is running\\r\"; done; done'")
+  tmux swap-pane -t $tmp_window \; select-window -t $tmp_window
+fi
+
 set -e
 
 # Clean up named pipes on exit
 id=$RANDOM
-argsf=/tmp/fzf-args-$id
-fifo1=/tmp/fzf-fifo1-$id
-fifo2=/tmp/fzf-fifo2-$id
-fifo3=/tmp/fzf-fifo3-$id
+argsf="${TMPDIR:-/tmp}/fzf-args-$id"
+fifo1="${TMPDIR:-/tmp}/fzf-fifo1-$id"
+fifo2="${TMPDIR:-/tmp}/fzf-fifo2-$id"
+fifo3="${TMPDIR:-/tmp}/fzf-fifo3-$id"
 cleanup() {
   rm -f $argsf $fifo1 $fifo2 $fifo3
+
+  # Remove temp window if we were zoomed
+  if [[ -n "$zoomed" ]]; then
+    tmux swap-pane -t $original_window \; \
+      select-window -t $original_window \; \
+      kill-window -t $tmp_window \; \
+      resize-pane -Z
+  fi
 }
 trap cleanup EXIT SIGINT SIGTERM
 
-fail() {
-  >&2 echo "$1"
-  exit 1
-}
-fzf="$(which fzf 2> /dev/null)" || fzf="$(dirname "$0")/fzf"
-[ -x "$fzf" ] || fail "fzf executable not found"
+envs="env TERM=$TERM "
+[[ -n "$FZF_DEFAULT_OPTS"    ]] && envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
+[[ -n "$FZF_DEFAULT_COMMAND" ]] && envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
 
-envs=""
-[ -n "$FZF_DEFAULT_OPTS"    ] && envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
-[ -n "$FZF_DEFAULT_COMMAND" ] && envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
-
-mkfifo $fifo2
-mkfifo $fifo3
+mkfifo -m o+w $fifo2
+mkfifo -m o+w $fifo3
 
 # Build arguments to fzf
 opts=""
 for arg in "${args[@]}"; do
-  opts="$opts \"${arg//\"/\\\"}\""
+  arg="${arg//\\/\\\\}"
+  arg="${arg//\"/\\\"}"
+  arg="${arg//\`/\\\`}"
+  arg="${arg//$/\\$}"
+  opts="$opts \"$arg\""
 done
 
-if [ -n "$term" -o -t 0 ]; then
-  cat <<< "$fzf $opts > $fifo2; echo \$? > $fifo3 $close" > $argsf
-  tmux set-window-option -q synchronize-panes off \;\
-    split-window $opt "cd $(printf %q "$PWD");$envs bash $argsf" $swap
+if [[ -n "$term" ]] || [[ -t 0 ]]; then
+  cat <<< "\"$fzf\" $opts > $fifo2; echo \$? > $fifo3 $close" > $argsf
+  TMUX=$(echo $TMUX | cut -d , -f 1,2) tmux set-window-option synchronize-panes off \;\
+    set-window-option remain-on-exit off \;\
+    split-window $opt "cd $(printf %q "$PWD");$envs bash $argsf" $swap \
+    > /dev/null 2>&1
 else
   mkfifo $fifo1
-  cat <<< "$fzf $opts < $fifo1 > $fifo2; echo \$? > $fifo3 $close" > $argsf
-  tmux set-window-option -q synchronize-panes off \;\
-    split-window $opt "$envs bash $argsf" $swap
+  cat <<< "\"$fzf\" $opts < $fifo1 > $fifo2; echo \$? > $fifo3 $close" > $argsf
+  TMUX=$(echo $TMUX | cut -d , -f 1,2) tmux set-window-option synchronize-panes off \;\
+    set-window-option remain-on-exit off \;\
+    split-window $opt "$envs bash $argsf" $swap \
+    > /dev/null 2>&1
   cat <&0 > $fifo1 &
 fi
 cat $fifo2
-[ "$(cat $fifo3)" = '0' ]
+exit "$(cat $fifo3)"
 

fzf

@@ -206,11 +206,11 @@ class FZF
         @expect = true
       when /^--expect=(.*)$/
         @expect = true
-      when '--toggle-sort', '--tiebreak', '--color'
+      when '--toggle-sort', '--tiebreak', '--color', '--bind', '--history', '--history-size'
         argv.shift
       when '--tac', '--no-tac', '--sync', '--no-sync', '--hscroll', '--no-hscroll',
-           '--inline-info', '--no-inline-info',
-           /^--color=(.*)$/, /^--toggle-sort=(.*)$/, /^--tiebreak=(.*)$/
+           '--inline-info', '--no-inline-info', '--read0', '--cycle', /^--bind=(.*)$/,
+           /^--color=(.*)$/, /^--toggle-sort=(.*)$/, /^--tiebreak=(.*)$/, /^--history(-max)?=(.*)$/
         # XXX
       else
         usage 1, "illegal option: #{o}"
@@ -370,7 +370,7 @@ class FZF
     +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])
+                          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)
 
@@ -396,7 +396,7 @@ class FZF
 
   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_OPTS      Default options (e.g. "-x -m --sort 10000")] + $/ + $/
    exit x
   end
 

install

@@ -1,35 +1,93 @@
 #!/usr/bin/env bash
 
-version=0.9.11
+set -u
 
-cd $(dirname $BASH_SOURCE)
-fzf_base=$(pwd)
+[[ "$@" =~ --pre ]] && version=0.15.1 pre=1 ||
+                       version=0.15.1 pre=0
 
-# If stdin is a tty, we are "interactive".
-[ -t 0 ] && interactive=yes
+auto_completion=
+key_bindings=
+update_config=2
+binary_arch=
+allow_legacy=
+
+help() {
+  cat << EOF
+usage: $0 [OPTIONS]
+
+    --help               Show this message
+    --bin                Download fzf binary only; Do not generate ~/.fzf.{bash,zsh}
+    --all                Download fzf binary and update configuration files
+                         to enable key bindings and fuzzy completion
+    --[no-]key-bindings  Enable/disable key bindings (CTRL-T, CTRL-R, ALT-C)
+    --[no-]completion    Enable/disable fuzzy completion (bash & zsh)
+    --[no-]update-rc     Whether or not to update shell configuration files
+
+    --32                 Download 32-bit binary
+    --64                 Download 64-bit binary
+EOF
+}
+
+for opt in "$@"; do
+  case $opt in
+    --help)
+      help
+      exit 0
+      ;;
+    --all)
+      auto_completion=1
+      key_bindings=1
+      update_config=1
+      allow_legacy=1
+      ;;
+    --key-bindings)    key_bindings=1    ;;
+    --no-key-bindings) key_bindings=0    ;;
+    --completion)      auto_completion=1 ;;
+    --no-completion)   auto_completion=0 ;;
+    --update-rc)       update_config=1   ;;
+    --no-update-rc)    update_config=0   ;;
+    --32)              binary_arch=386   ;;
+    --64)              binary_arch=amd64 ;;
+    --bin|--pre)       ;;
+    *)
+      echo "unknown option: $opt"
+      help
+      exit 1
+      ;;
+  esac
+done
+
+cd "$(dirname "${BASH_SOURCE[0]}")"
+fzf_base="$(pwd)"
 
 ask() {
+  # If stdin is a tty, we are "interactive".
   # non-interactive shell: wait for a linefeed
   #     interactive shell: continue after a single keypress
-  [ -n "$interactive" ] && read_n='-n 1' || read_n=
+  read_n=$([ -t 0 ] && echo "-n 1")
 
   read -p "$1 ([y]/n) " $read_n -r
   echo
-  [[ ! $REPLY =~ ^[Nn]$ ]]
+  [[ $REPLY =~ ^[Nn]$ ]]
 }
 
 check_binary() {
   echo -n "  - Checking fzf executable ... "
-  local output=$("$fzf_base"/bin/fzf --version 2>&1)
-  if [ "$version" = "$output" ]; then
+  local output
+  output=$("$fzf_base"/bin/fzf --version 2>&1)
+  if [ $? -ne 0 ]; then
+    echo "Error: $output"
+    binary_error="Invalid binary"
+  elif [ "$version" != "$output" ]; then
+    echo "$output != $version"
+    binary_error="Invalid version"
+  else
     echo "$output"
     binary_error=""
-  else
-    echo "$output != $version"
-    rm -f "$fzf_base"/bin/fzf
-    binary_error="Invalid binary"
-    return 1
+    return 0
   fi
+  rm -f "$fzf_base"/bin/fzf
+  return 1
 }
 
 symlink() {
@@ -43,13 +101,35 @@ symlink() {
   fi
 }
 
+link_fzf_in_path() {
+  if which_fzf="$(command -v fzf)"; then
+    echo "  - Found in \$PATH"
+    echo "  - Creating symlink: $which_fzf -> bin/fzf"
+    (cd "$fzf_base"/bin && rm -f fzf && ln -sf "$which_fzf" fzf)
+    check_binary && return
+  fi
+  return 1
+}
+
+try_curl() {
+  command -v curl > /dev/null && curl -fL $1 | tar -xz
+}
+
+try_wget() {
+  command -v wget > /dev/null && wget -O - $1 | tar -xz
+}
+
 download() {
   echo "Downloading bin/fzf ..."
-  if [[ ! $1 =~ dev && -x "$fzf_base"/bin/fzf ]]; then
-    echo "  - Already exists"
-    check_binary && return
-  elif [ -x "$fzf_base"/bin/$1 ]; then
-    symlink $1 && check_binary && return
+  if [ $pre = 0 ]; then
+    if [ -x "$fzf_base"/bin/fzf ]; then
+      echo "  - Already exists"
+      check_binary && return
+    fi
+    if [ -x "$fzf_base"/bin/$1 ]; then
+      symlink $1 && check_binary && return
+    fi
+    link_fzf_in_path && return
   fi
   mkdir -p "$fzf_base"/bin && cd "$fzf_base"/bin
   if [ $? -ne 0 ]; then
@@ -58,14 +138,13 @@ download() {
   fi
 
   local url=https://github.com/junegunn/fzf-bin/releases/download/$version/${1}.tgz
-  if which curl > /dev/null; then
-    curl -fL $url | tar -xz
-  elif which wget > /dev/null; then
-    wget -O - $url | tar -xz
-  else
-    binary_error="curl or wget not found"
+  set -o pipefail
+  if ! (try_curl $url || try_wget $url); then
+    set +o pipefail
+    binary_error="Failed to download with curl and wget"
     return
   fi
+  set +o pipefail
 
   if [ ! -f $1 ]; then
     binary_error="Failed to download ${1}"
@@ -80,25 +159,22 @@ archi=$(uname -sm)
 binary_available=1
 binary_error=""
 case "$archi" in
-  Darwin\ x86_64) download fzf-$version-darwin_amd64 ;;
-  Darwin\ i*86)   download fzf-$version-darwin_386   ;;
-  Linux\ x86_64)  download fzf-$version-linux_amd64  ;;
-  Linux\ i*86)    download fzf-$version-linux_386    ;;
+  Darwin\ x86_64) download fzf-$version-darwin_${binary_arch:-amd64} ;;
+  Darwin\ i*86)   download fzf-$version-darwin_${binary_arch:-386}   ;;
+  Linux\ x86_64)  download fzf-$version-linux_${binary_arch:-amd64}  ;;
+  Linux\ i*86)    download fzf-$version-linux_${binary_arch:-386}    ;;
   *)              binary_available=0 binary_error=1  ;;
 esac
 
-cd "$fzf_base"
-if [ -n "$binary_error" ]; then
-  if [ $binary_available -eq 0 ]; then
-    echo "No prebuilt binary for $archi ... "
-  else
-    echo "  - $binary_error !!!"
+install_ruby_fzf() {
+  if [ -z "$allow_legacy" ]; then
+    ask "Do you want to install legacy Ruby version instead?" && exit 1
   fi
   echo "Installing legacy Ruby version ..."
 
   # ruby executable
   echo -n "Checking Ruby executable ... "
-  ruby=`which ruby`
+  ruby=$(command -v ruby)
   if [ $? -ne 0 ]; then
     echo "ruby executable not found !!!"
     exit 1
@@ -106,7 +182,7 @@ if [ -n "$binary_error" ]; then
 
   # System ruby is preferred
   system_ruby=/usr/bin/ruby
-  if [ -x $system_ruby -a $system_ruby != "$ruby" ]; then
+  if [ -x $system_ruby ] && [ $system_ruby != "$ruby" ]; then
     $system_ruby --disable-gems -rcurses -e0 2> /dev/null
     [ $? -eq 0 ] && ruby=$system_ruby
   fi
@@ -159,43 +235,75 @@ if [ -n "$binary_error" ]; then
   echo "$fzf_cmd \"\$@\"" >> "$fzf_base"/bin/fzf
   chmod +x "$fzf_base"/bin/fzf
   echo "OK"
+}
+
+cd "$fzf_base"
+if [ -n "$binary_error" ]; then
+  if [ $binary_available -eq 0 ]; then
+    echo "No prebuilt binary for $archi ..."
+  else
+    echo "  - $binary_error !!!"
+  fi
+  if command -v go > /dev/null; then
+    echo -n "Building binary (go get -u github.com/junegunn/fzf/src/fzf) ... "
+    if [ -z "${GOPATH-}" ]; then
+      export GOPATH="${TMPDIR:-/tmp}/fzf-gopath"
+      mkdir -p "$GOPATH"
+    fi
+    if go get -u github.com/junegunn/fzf/src/fzf; then
+      echo "OK"
+      cp "$GOPATH/bin/fzf" "$fzf_base/bin/"
+    else
+      echo "Failed to build binary ..."
+      install_ruby_fzf
+    fi
+  else
+    echo "go executable not found. Cannot build binary ..."
+    install_ruby_fzf
+  fi
 fi
 
 [[ "$*" =~ "--bin" ]] && exit 0
 
 # Auto-completion
-ask "Do you want to add auto-completion support?"
-auto_completion=$?
+if [ -z "$auto_completion" ]; then
+  ask "Do you want to enable fuzzy auto-completion?"
+  auto_completion=$?
+fi
 
 # Key-bindings
-ask "Do you want to add key bindings?"
-key_bindings=$?
+if [ -z "$key_bindings" ]; then
+  ask "Do you want to enable key bindings?"
+  key_bindings=$?
+fi
 
 echo
-for shell in bash zsh; do
+has_zsh=$(command -v zsh > /dev/null && echo 1 || echo 0)
+shells=$([ $has_zsh -eq 1 ] && echo "bash zsh" || echo "bash")
+for shell in $shells; do
   echo -n "Generate ~/.fzf.$shell ... "
   src=~/.fzf.${shell}
 
-  fzf_completion="[[ \$- =~ i ]] && source \"$fzf_base/shell/completion.${shell}\""
-  if [ $shell != bash -o $auto_completion -ne 0 ]; then
+  fzf_completion="[[ \$- == *i* ]] && source \"$fzf_base/shell/completion.${shell}\" 2> /dev/null"
+  if [ $auto_completion -eq 0 ]; then
     fzf_completion="# $fzf_completion"
   fi
 
   fzf_key_bindings="source \"$fzf_base/shell/key-bindings.${shell}\""
-  if [ $key_bindings -ne 0 ]; then
+  if [ $key_bindings -eq 0 ]; then
     fzf_key_bindings="# $fzf_key_bindings"
   fi
 
   cat > $src << EOF
 # Setup fzf
 # ---------
-if [[ ! "\$PATH" =~ "$fzf_base/bin" ]]; then
+if [[ ! "\$PATH" == *$fzf_base/bin* ]]; then
   export PATH="\$PATH:$fzf_base/bin"
 fi
 
 # Man path
 # --------
-if [[ ! "\$MANPATH" =~ "$fzf_base/man" && -d "$fzf_base/man" ]]; then
+if [[ ! "\$MANPATH" == *$fzf_base/man* && -d "$fzf_base/man" ]]; then
   export MANPATH="\$MANPATH:$fzf_base/man"
 fi
 
@@ -212,9 +320,8 @@ EOF
 done
 
 # fish
-has_fish=0
-if [ -n "$(which fish 2> /dev/null)" ]; then
-  has_fish=1
+has_fish=$(command -v fish > /dev/null && echo 1 || echo 0)
+if [ $has_fish -eq 1 ]; then
   echo -n "Update fish_user_paths ... "
   fish << EOF
   echo \$fish_user_paths | grep $fzf_base/bin > /dev/null
@@ -228,50 +335,74 @@ EOF
     rm -f ~/.config/fish/functions/fzf.fish && echo "OK" || echo "Failed"
   fi
 
-  if [ $key_bindings -eq 0 ]; then
-    echo -n "Symlink ~/.config/fish/functions/fzf_key_bindings.fish ... "
-    ln -sf $fzf_base/shell/key-bindings.fish \
-           ~/.config/fish/functions/fzf_key_bindings.fish && echo "OK" || echo "Failed"
+  fish_binding=~/.config/fish/functions/fzf_key_bindings.fish
+  if [ $key_bindings -ne 0 ]; then
+    echo -n "Symlink $fish_binding ... "
+    ln -sf "$fzf_base/shell/key-bindings.fish" \
+           "$fish_binding" && echo "OK" || echo "Failed"
+  else
+    echo -n "Removing $fish_binding ... "
+    rm -f "$fish_binding"
+    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' ' ')
+  set -e
+
+  local update line file pat lno
+  update="$1"
+  line="$2"
+  file="$3"
+  pat="${4:-}"
+
+  echo "Update $file:"
+  echo "  - $line"
+  [ -f "$file" ] || touch "$file"
+  if [ $# -lt 4 ]; then
+    lno=$(\grep -nF "$line" "$file" | sed 's/:.*//' | tr '\n' ' ')
   else
-    line=$(\grep -nF "$3" "$2" | sed 's/:.*//' | tr '\n' ' ')
+    lno=$(\grep -nF "$pat" "$file" | sed 's/:.*//' | tr '\n' ' ')
   fi
-  if [ -n "$line" ]; then
-    echo "    - Already exists: line #$line"
+  if [ -n "$lno" ]; then
+    echo "    - Already exists: line #$lno"
   else
-    echo "$1" >> "$2"
-    echo "    + Added"
+    if [ $update -eq 1 ]; then
+      echo >> "$file"
+      echo "$line" >> "$file"
+      echo "    + Added"
+    else
+      echo "    ~ Skipped"
+    fi
   fi
   echo
+  set +e
 }
 
+if [ $update_config -eq 2 ]; then
+  echo
+  ask "Do you want to update your shell configuration files?"
+  update_config=$?
+fi
 echo
-for shell in bash zsh; do
-  append_line "[ -f ~/.fzf.${shell} ] && source ~/.fzf.${shell}" ~/.${shell}rc "~/.fzf.${shell}"
+for shell in $shells; do
+  [ $shell = zsh ] && dest=${ZDOTDIR:-~}/.zshrc || dest=~/.bashrc
+  append_line $update_config "[ -f ~/.fzf.${shell} ] && source ~/.fzf.${shell}" "$dest" "~/.fzf.${shell}"
 done
 
-if [ $key_bindings -eq 0 -a $has_fish -eq 1 ]; then
+if [ $key_bindings -eq 1 ] && [ $has_fish -eq 1 ]; then
   bind_file=~/.config/fish/functions/fish_user_key_bindings.fish
-  append_line "fzf_key_bindings" "$bind_file"
+  append_line $update_config "fzf_key_bindings" "$bind_file"
 fi
 
-cat << EOF
-Finished. Restart your shell or reload config file.
-   source ~/.bashrc  # bash
-   source ~/.zshrc   # zsh
-EOF
-[ $has_fish -eq 1 ] && echo "   fzf_key_bindings  # fish"; cat << EOF
-
-Use uninstall script to remove fzf.
-
-For more information, see: https://github.com/junegunn/fzf
-EOF
+if [ $update_config -eq 1 ]; then
+  echo 'Finished. Restart your shell or reload config file.'
+  echo '   source ~/.bashrc  # bash'
+  [ $has_zsh  -eq 1 ] && echo "   source ${ZDOTDIR:-~}/.zshrc   # zsh"
+  [ $has_fish -eq 1 ] && [ $key_bindings -eq 1 ] && echo '   fzf_key_bindings  # fish'
+  echo
+  echo 'Use uninstall script to remove fzf.'
+  echo
+fi
+echo 'For more information, see: https://github.com/junegunn/fzf'
 

man/man1/fzf-tmux.1

@@ -0,0 +1,54 @@
+.ig
+The MIT License (MIT)
+
+Copyright (c) 2016 Junegunn Choi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+..
+.TH fzf-tmux 1 "Sep 2016" "fzf 0.15.1" "fzf-tmux - open fzf in tmux split pane"
+
+.SH NAME
+fzf-tmux - open fzf in tmux split pane
+
+.SH SYNOPSIS
+.B fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
+
+.SH DESCRIPTION
+fzf-tmux is a wrapper script for fzf that opens fzf in a tmux split pane. It is
+designed to work just like fzf except that it does not take up the whole
+screen. You can safely use fzf-tmux instead of fzf in your scripts as the extra
+options will be silently ignored if you're not on tmux.
+
+.SH OPTIONS
+.SS Layout
+
+(default: \fB-d 50%\fR)
+
+.TP
+.B "-u [height[%]]"
+Split above (up)
+.TP
+.B "-d [height[%]]"
+Split below (down)
+.TP
+.B "-l [width[%]]"
+Split left
+.TP
+.B "-r [width[%]]"
+Split right

man/man1/fzf.1

@@ -1,7 +1,7 @@
 .ig
 The MIT License (MIT)
 
-Copyright (c) 2015 Junegunn Choi
+Copyright (c) 2016 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -21,7 +21,7 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ..
-.TH fzf 1 "April 2015" "fzf 0.9.11" "fzf - a command-line fuzzy finder"
+.TH fzf 1 "Sep 2016" "fzf 0.15.1" "fzf - a command-line fuzzy finder"
 
 .SH NAME
 fzf - a command-line fuzzy finder
@@ -36,26 +36,37 @@ fzf is a general-purpose command-line fuzzy finder.
 .SS Search mode
 .TP
 .B "-x, --extended"
-Extended-search mode
+Extended-search mode. Since 0.10.9, this is enabled by default. You can disable
+it with \fB+x\fR or \fB--no-extended\fR.
 .TP
-.B "-e, --extended-exact"
-Extended-search mode (exact match)
+.B "-e, --exact"
+Enable exact-match
 .TP
 .B "-i"
 Case-insensitive match (default: smart-case match)
 .TP
 .B "+i"
 Case-sensitive match
+.TP
+.BI "--algo=" TYPE
+Fuzzy matching algorithm (default: v2)
+
+.br
+.BR v2 "     Optimal scoring algorithm (quality)"
+.br
+.BR v1 "     Faster but not guaranteed to find the optimal result (performance)"
+.br
+
 .TP
 .BI "-n, --nth=" "N[,..]"
 Comma-separated list of field index expressions for limiting search scope.
-See \fBFIELD INDEX EXPRESSION\fR for details.
+See \fBFIELD INDEX EXPRESSION\fR for the details.
 .TP
 .BI "--with-nth=" "N[,..]"
-Transform the item using the list of index expressions for search
+Transform the presentation of each line using field index expressions
 .TP
 .BI "-d, --delimiter=" "STR"
-Field delimiter regex for \fI--nth\fR and \fI--with-nth\fR (default: AWK-style)
+Field delimiter regex for \fB--nth\fR and \fB--with-nth\fR (default: AWK-style)
 .SS Search result
 .TP
 .B "+s, --no-sort"
@@ -63,64 +74,188 @@ Do not sort the result
 .TP
 .B "--tac"
 Reverse the order of the input
+
 .RS
 e.g. \fBhistory | fzf --tac --no-sort\fR
 .RE
 .TP
-.BI "--tiebreak=" "CRI"
-Sort criterion to use when the scores are tied
+.BI "--tiebreak=" "CRI[,..]"
+Comma-separated list of sort criteria to apply when the scores are tied.
 .br
-.R ""
+
 .br
-.BR length "  Prefers item with shorter length"
+.BR length "  Prefers line with shorter length"
 .br
-.BR begin "   Prefers item with matched substring closer to the beginning"
+.BR begin "   Prefers line with matched substring closer to the beginning"
 .br
-.BR end "     Prefers item with matched substring closer to the end"
+.BR end "     Prefers line with matched substring closer to the end"
 .br
-.BR index "   Prefers item that appeared earlier in the input stream"
+.BR index "   Prefers line that appeared earlier in the input stream"
 .br
+
+.br
+- Each criterion should appear only once in the list
+.br
+- \fBindex\fR is only allowed at the end of the list
+.br
+- \fBindex\fR is implicitly appended to the list when not specified
+.br
+- Default is \fBlength\fR (or equivalently \fBlength\fR,index)
+.br
+- If \fBend\fR is found in the list, fzf will scan each line backwards
 .SS Interface
 .TP
 .B "-m, --multi"
 Enable multi-select with tab/shift-tab
 .TP
-.B "--ansi"
-Enable processing of ANSI color codes
-.TP
 .B "--no-mouse"
 Disable mouse
 .TP
-.B "--color=COL"
-Color scheme: [dark|light|16|bw]
-.br
-(default: dark on 256-color terminal, otherwise 16)
-.br
-.R ""
-.br
-.BR dark "    Color scheme for dark 256-color terminal"
-.br
-.BR light "   Color scheme for light 256-color terminal"
-.br
-.BR 16 "      Color scheme for 16-color terminal"
-.br
-.BR bw "      No colors"
-.br
+.BI "--bind=" "KEYBINDS"
+Comma-separated list of custom key bindings. See \fBKEY BINDINGS\fR for the
+details.
 .TP
-.B "--black"
-Use black background
+.B "--cycle"
+Enable cyclic scroll
+.TP
+.B "--no-hscroll"
+Disable horizontal scroll
+.TP
+.BI "--hscroll-off=" "COL"
+Number of screen columns to keep to the right of the highlighted substring
+(default: 10). Setting it to a large value will cause the text to be positioned
+on the center of the screen.
+.TP
+.BI "--jump-labels=" "CHARS"
+Label characters for \fBjump\fR and \fBjump-accept\fR
+.SS Layout
 .TP
 .B "--reverse"
 Reverse orientation
 .TP
-.B "--no-hscroll"
-Disable horizontal scroll
+.BI "--margin=" MARGIN
+Comma-separated expression for margins around the finder.
+.br
+
+.br
+.RS
+.BR TRBL "     Same margin for top, right, bottom, and left"
+.br
+.BR TB,RL "    Vertical, horizontal margin"
+.br
+.BR T,RL,B "   Top, horizontal, bottom margin"
+.br
+.BR T,R,B,L "  Top, right, bottom, left margin"
+.br
+
+.br
+Each part can be given in absolute number or in percentage relative to the
+terminal size with \fB%\fR suffix.
+.br
+
+.br
+e.g. \fBfzf --margin 10%\fR
+     \fBfzf --margin 1,5%\fR
+.RE
 .TP
 .B "--inline-info"
 Display finder info inline with the query
 .TP
 .BI "--prompt=" "STR"
 Input prompt (default: '> ')
+.TP
+.BI "--header=" "STR"
+The given string will be printed as the sticky header. The lines are displayed
+in the given order from top to bottom regardless of \fB--reverse\fR option, and
+are not affected by \fB--with-nth\fR. ANSI color codes are processed even when
+\fB--ansi\fR is not set.
+.TP
+.BI "--header-lines=" "N"
+The first N lines of the input are treated as the sticky header. When
+\fB--with-nth\fR is set, the lines are transformed just like the other
+lines that follow.
+.SS Display
+.TP
+.B "--ansi"
+Enable processing of ANSI color codes
+.TP
+.BI "--tabstop=" SPACES
+Number of spaces for a tab character (default: 8)
+.TP
+.BI "--color=" "[BASE_SCHEME][,COLOR:ANSI]"
+Color configuration. The name of the base color scheme is followed by custom
+color mappings. Ansi color code of -1 denotes terminal default
+foreground/background color.
+
+.RS
+e.g. \fBfzf --color=bg+:24\fR
+     \fBfzf --color=light,fg:232,bg:255,bg+:116,info:27\fR
+.RE
+
+.RS
+.B BASE SCHEME:
+    (default: dark on 256-color terminal, otherwise 16)
+
+    \fBdark    \fRColor scheme for dark 256-color terminal
+    \fBlight   \fRColor scheme for light 256-color terminal
+    \fB16      \fRColor scheme for 16-color terminal
+    \fBbw      \fRNo colors
+
+.B COLOR:
+    \fBfg      \fRText
+    \fBbg      \fRBackground
+    \fBhl      \fRHighlighted substrings
+    \fBfg+     \fRText (current line)
+    \fBbg+     \fRBackground (current line)
+    \fBhl+     \fRHighlighted substrings (current line)
+    \fBinfo    \fRInfo
+    \fBprompt  \fRPrompt
+    \fBpointer \fRPointer to the current line
+    \fBmarker  \fRMulti-select marker
+    \fBspinner \fRStreaming input indicator
+    \fBheader  \fRHeader
+.RE
+.TP
+.B "--black"
+Use black background
+.SS History
+.TP
+.BI "--history=" "HISTORY_FILE"
+Load search history from the specified file and update the file on completion.
+When enabled, \fBCTRL-N\fR and \fBCTRL-P\fR are automatically remapped to
+\fBnext-history\fR and \fBprevious-history\fR.
+.TP
+.BI "--history-size=" "N"
+Maximum number of entries in the history file (default: 1000). The file is
+automatically truncated when the number of the lines exceeds the value.
+.SS Preview
+.TP
+.BI "--preview=" "COMMAND"
+Execute the given command for the current line and display the result on the
+preview window. \fB{}\fR is the placeholder for the quoted string of the
+current line.
+
+.RS
+e.g. \fBfzf --preview="head -$LINES {}"\fR
+.RE
+.TP
+.BI "--preview-window=" "[POSITION][:SIZE[%]][:hidden]"
+Determine the layout of the preview window. If the argument ends with
+\fB:hidden\fR, the preview window will be hidden by default until
+\fBtoggle-preview\fR action is triggered.
+
+.RS
+.B POSITION: (default: right)
+    \fBup
+    \fBdown
+    \fBleft
+    \fBright
+.RE
+
+.RS
+e.g. \fBfzf --preview="head {}" --preview-window=up:30%\fR
+     \fBfzf --preview="file {}" --preview-window=down:1\fR
+.RE
 .SS Scripting
 .TP
 .BI "-q, --query=" "STR"
@@ -140,44 +275,51 @@ fzf becomes a fuzzy-version of grep.
 Print query as the first line
 .TP
 .BI "--expect=" "KEY[,..]"
-Comma-separated list of keys (\fIctrl-[a-z]\fR, \fIalt-[a-z]\fR, \fIf[1-4]\fR,
-or any single character) that can be used to complete fzf in addition to the
-default enter key. When this option is set, fzf will print the name of the key
-pressed as the first line of its output (or as the second line if
+Comma-separated list of keys that can be used to complete fzf in addition to
+the default enter key. When this option is set, fzf will print the name of the
+key pressed as the first line of its output (or as the second line if
 \fB--print-query\fR is also used). The line will be empty if fzf is completed
 with the default enter key.
+
 .RS
 e.g. \fBfzf --expect=ctrl-v,ctrl-t,alt-s,f1,f2,~,@\fR
 .RE
 .TP
-.BI "--toggle-sort=" "KEY"
-Key to toggle sort (\fIctrl-[a-z]\fR, \fIalt-[a-z]\fR, \fIf[1-4]\fR,
-or any single character)
+.B "--read0"
+Read input delimited by ASCII NUL character instead of newline character
+.TP
+.B "--print0"
+Print output delimited by ASCII NUL character instead of newline character
 .TP
 .B "--sync"
 Synchronous search for multi-staged filtering. If specified, fzf will launch
 ncurses finder only after the input stream is complete.
+
 .RS
 e.g. \fBfzf --multi | fzf --sync\fR
 .RE
 
-.SH ENVIRONMENT
+.SH ENVIRONMENT VARIABLES
 .TP
 .B FZF_DEFAULT_COMMAND
 Default command to use when input is tty
 .TP
 .B FZF_DEFAULT_OPTS
-Default options. e.g. \fB--extended --ansi\fR
+Default options. e.g. \fBexport FZF_DEFAULT_OPTS="--extended --cycle"\fR
 
 .SH EXIT STATUS
 .BR 0 "      Normal exit"
 .br
-.BR 1 "      Interrupted with \fBCTRL-C\fR or \fBESC\fR"
+.BR 1 "      No match"
+.br
+.BR 2 "      Error"
+.br
+.BR 130 "    Interrupted with \fBCTRL-C\fR or \fBESC\fR"
 
 .SH FIELD INDEX EXPRESSION
 
 A field index expression can be a non-zero integer or a range expression
-([BEGIN]..[END]). \fI--nth\fR and \fI--with-nth\fR take a comma-separated list
+([BEGIN]..[END]). \fB--nth\fR and \fB--with-nth\fR take a comma-separated list
 of field index expressions.
 
 .SS Examples
@@ -200,34 +342,164 @@ of field index expressions.
 
 .SH EXTENDED SEARCH MODE
 
-With \fI-x\fR or \fI--extended\fR option, fzf will start in "extended-search
-mode". In this mode, you can specify multiple patterns delimited by spaces,
-such as: \fB'wild ^music .mp3$ sbtrkt !rmx\fR
+Unless specified otherwise, fzf will start in "extended-search mode". In this
+mode, you can specify multiple patterns delimited by spaces, such as: \fB'wild
+^music .mp3$ sbtrkt !rmx\fR
 
 .SS Exact-match (quoted)
-A term that is prefixed by a single-quote character (') is interpreted as an
-"exact-match" (or "non-fuzzy") term. fzf will search for the exact occurrences
-of the string.
+A term that is prefixed by a single-quote character (\fB'\fR) is interpreted as
+an "exact-match" (or "non-fuzzy") term. fzf will search for the exact
+occurrences of the string.
 
 .SS Anchored-match
-A term can be prefixed by ^, or suffixed by $ to become an anchored-match term.
-Then fzf will search for the items that start with or end with the given
-string. An anchored-match term is also an exact-match term.
+A term can be prefixed by \fB^\fR, or suffixed by \fB$\fR to become an
+anchored-match term. Then fzf will search for the lines that start with or end
+with the given string. An anchored-match term is also an exact-match term.
 
 .SS Negation
-If a term is prefixed by !, fzf will exclude the items that satisfy the term
-from the result.
+If a term is prefixed by \fB!\fR, fzf will exclude the lines that satisfy the
+term from the result.
 
-.SS Extended-exact mode
-If you don't need fuzzy matching at all and do not wish to "quote" (prefixing
-with ') every word, start fzf with \fI-e\fR or \fI--extended-exact\fR option
-(instead of \fI-x\fR or \fI--extended\fR).
+.SS Exact-match by default
+If you don't prefer fuzzy matching and do not wish to "quote" (prefixing with
+\fB'\fR) every word, start fzf with \fB-e\fR or \fB--exact\fR option. Note that
+when \fB--exact\fR is set, \fB'\fR-prefix "unquotes" the term.
+
+.SS OR operator
+A single bar character term acts as an OR operator. For example, the following
+query matches entries that start with \fBcore\fR and end with either \fBgo\fR,
+\fBrb\fR, or \fBpy\fR.
+
+e.g. \fB^core go$ | rb$ | py$\fR
+
+.SH KEY BINDINGS
+You can customize key bindings of fzf with \fB--bind\fR option which takes
+a comma-separated list of key binding expressions. Each key binding expression
+follows the following format: \fBKEY:ACTION\fR
+
+e.g. \fBfzf --bind=ctrl-j:accept,ctrl-k:kill-line\fR
+
+.B AVAILABLE KEYS:    (SYNONYMS)
+    \fIctrl-[a-z]\fR
+    \fIalt-[a-z]\fR
+    \fIf[1-10]\fR
+    \fIenter\fR       (\fIreturn\fR \fIctrl-m\fR)
+    \fIspace\fR
+    \fIbspace\fR      (\fIbs\fR)
+    \fIalt-enter\fR
+    \fIalt-space\fR
+    \fIalt-bspace\fR  (\fIalt-bs\fR)
+    \fIalt-/\fR
+    \fItab\fR
+    \fIbtab\fR        (\fIshift-tab\fR)
+    \fIesc\fR
+    \fIdel\fR
+    \fIup\fR
+    \fIdown\fR
+    \fIleft\fR
+    \fIright\fR
+    \fIhome\fR
+    \fIend\fR
+    \fIpgup\fR        (\fIpage-up\fR)
+    \fIpgdn\fR        (\fIpage-down\fR)
+    \fIshift-left\fR
+    \fIshift-right\fR
+    \fIdouble-click\fR
+    or any single character
+
+  \fBACTION:               DEFAULT BINDINGS (NOTES):
+    \fBabort\fR                 \fIctrl-c  ctrl-g  ctrl-q  esc\fR
+    \fBaccept\fR                \fIenter   double-click\fR
+    \fBbackward-char\fR         \fIctrl-b  left\fR
+    \fBbackward-delete-char\fR  \fIctrl-h  bspace\fR
+    \fBbackward-kill-word\fR    \fIalt-bs\fR
+    \fBbackward-word\fR         \fIalt-b   shift-left\fR
+    \fBbeginning-of-line\fR     \fIctrl-a  home\fR
+    \fBcancel\fR
+    \fBclear-screen\fR          \fIctrl-l\fR
+    \fBdelete-char\fR           \fIdel\fR
+    \fBdelete-char/eof\fR       \fIctrl-d\fR
+    \fBdeselect-all\fR
+    \fBdown\fR                  \fIctrl-j  ctrl-n  down\fR
+    \fBend-of-line\fR           \fIctrl-e  end\fR
+    \fBexecute(...)\fR          (see below for the details)
+    \fBexecute-multi(...)\fR    (see below for the details)
+    \fBforward-char\fR          \fIctrl-f  right\fR
+    \fBforward-word\fR          \fIalt-f   shift-right\fR
+    \fBignore\fR
+    \fBjump\fR                  (EasyMotion-like 2-keystroke movement)
+    \fBjump-accept\fR           (jump and accept)
+    \fBkill-line\fR
+    \fBkill-word\fR             \fIalt-d\fR
+    \fBnext-history\fR          (\fIctrl-n\fR on \fB--history\fR)
+    \fBpage-down\fR             \fIpgdn\fR
+    \fBpage-up\fR               \fIpgup\fR
+    \fBprevious-history\fR      (\fIctrl-p\fR on \fB--history\fR)
+    \fBprint-query\fR           (print query and exit)
+    \fBselect-all\fR
+    \fBtoggle\fR
+    \fBtoggle-all\fR
+    \fBtoggle-down\fR           \fIctrl-i  (tab)\fR
+    \fBtoggle-in\fR             (\fB--reverse\fR ? \fBtoggle-up\fR : \fBtoggle-down\fR)
+    \fBtoggle-out\fR            (\fB--reverse\fR ? \fBtoggle-down\fR : \fBtoggle-up\fR)
+    \fBtoggle-preview\fR
+    \fBtoggle-sort\fR           (equivalent to \fB--toggle-sort\fR)
+    \fBtoggle-up\fR             \fIbtab    (shift-tab)\fR
+    \fBunix-line-discard\fR     \fIctrl-u\fR
+    \fBunix-word-rubout\fR      \fIctrl-w\fR
+    \fBup\fR                    \fIctrl-k  ctrl-p  up\fR
+    \fByank\fR                  \fIctrl-y\fR
+
+With \fBexecute(...)\fR action, you can execute arbitrary commands without
+leaving fzf. For example, you can turn fzf into a simple file browser by
+binding \fBenter\fR key to \fBless\fR command like follows.
+
+    \fBfzf --bind "enter:execute(less {})"\fR
+
+\fB{}\fR is the placeholder for the quoted string of the current line.
+If the command contains parentheses, you can use any of the following
+alternative notations to avoid parse errors.
+
+    \fBexecute[...]\fR
+    \fBexecute~...~\fR
+    \fBexecute!...!\fR
+    \fBexecute@...@\fR
+    \fBexecute#...#\fR
+    \fBexecute$...$\fR
+    \fBexecute%...%\fR
+    \fBexecute^...^\fR
+    \fBexecute&...&\fR
+    \fBexecute*...*\fR
+    \fBexecute;...;\fR
+    \fBexecute/.../\fR
+    \fBexecute|...|\fR
+    \fBexecute:...\fR
+.RS
+This is the special form that frees you from parse errors as it does not expect
+the closing character. The catch is that it should be the last one in the
+comma-separated list.
+.RE
+
+\fBexecute-multi(...)\fR is an alternative action that executes the command
+with the selected entries when multi-select is enabled (\fB--multi\fR). With
+this action, \fB{}\fR is replaced with the quoted strings of the selected
+entries separated by spaces.
 
 .SH AUTHOR
 Junegunn Choi (\fIjunegunn.c@gmail.com\fR)
 
 .SH SEE ALSO
+.B Project homepage:
+.RS
 .I https://github.com/junegunn/fzf
+.RE
+.br
+
+.br
+.B Extra Vim plugin:
+.RS
+.I https://github.com/junegunn/fzf.vim
+.RE
 
 .SH LICENSE
 MIT

plugin/fzf.vim

@@ -1,4 +1,4 @@
-" Copyright (c) 2015 Junegunn Choi
+" Copyright (c) 2016 Junegunn Choi
 "
 " MIT License
 "
@@ -21,12 +21,11 @@
 " 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:default_height = '40%'
-let s:launcher = 'xterm -e bash -ic %s'
+let s:default_layout = { 'down': '~40%' }
+let s:layout_keys = ['window', 'up', 'down', 'left', 'right']
 let s:fzf_go = expand('<sfile>:h:h').'/bin/fzf'
 let s:install = expand('<sfile>:h:h').'/install'
 let s:installed = 0
-let s:fzf_rb = expand('<sfile>:h:h').'/fzf'
 let s:fzf_tmux = expand('<sfile>:h:h').'/bin/fzf-tmux'
 
 let s:cpo_save = &cpo
@@ -36,32 +35,22 @@ function! s:fzf_exec()
   if !exists('s:exec')
     if executable(s:fzf_go)
       let s:exec = s:fzf_go
+    elseif executable('fzf')
+      let s:exec = 'fzf'
+    elseif !s:installed && executable(s:install) &&
+          \ input('fzf executable not found. Download binary? (y/n) ') =~? '^y'
+      redraw
+      echo
+      call s:warn('Downloading fzf binary. Please wait ...')
+      let s:installed = 1
+      call system(s:install.' --bin')
+      return s:fzf_exec()
     else
-      let path = split(system('which fzf 2> /dev/null'), '\n')
-      if !v:shell_error && !empty(path)
-        let s:exec = path[0]
-      elseif !s:installed && executable(s:install)
-        echohl WarningMsg
-        echo 'Downloading fzf binary. Please wait ...'
-        echohl None
-        let s:installed = 1
-        call system(s:install.' --bin')
-        return s:fzf_exec()
-      elseif executable(s:fzf_rb)
-        let s:exec = s:fzf_rb
-      else
-        call system('type fzf')
-        if v:shell_error
-          throw 'fzf executable not found'
-        else
-          let s:exec = 'fzf'
-        endif
-      endif
+      redraw
+      throw 'fzf executable not found'
     endif
-    return s:exec
-  else
-    return s:exec
   endif
+  return s:shellesc(s:exec)
 endfunction
 
 function! s:tmux_enabled()
@@ -86,7 +75,7 @@ function! s:shellesc(arg)
 endfunction
 
 function! s:escape(path)
-  return substitute(a:path, ' ', '\\ ', 'g')
+  return escape(a:path, ' $%#''"\')
 endfunction
 
 " Upgrade legacy options
@@ -104,14 +93,127 @@ function! s:upgrade(dict)
   return copy
 endfunction
 
+function! s:error(msg)
+  echohl ErrorMsg
+  echom a:msg
+  echohl None
+endfunction
+
+function! s:warn(msg)
+  echohl WarningMsg
+  echom a:msg
+  echohl None
+endfunction
+
+function! s:has_any(dict, keys)
+  for key in a:keys
+    if has_key(a:dict, key)
+      return 1
+    endif
+  endfor
+  return 0
+endfunction
+
+function! s:open(cmd, target)
+  if stridx('edit', a:cmd) == 0 && fnamemodify(a:target, ':p') ==# expand('%:p')
+    return
+  endif
+  execute a:cmd s:escape(a:target)
+endfunction
+
+function! s:common_sink(action, lines) abort
+  if len(a:lines) < 2
+    return
+  endif
+  let key = remove(a:lines, 0)
+  let cmd = get(a:action, key, 'e')
+  if len(a:lines) > 1
+    augroup fzf_swap
+      autocmd SwapExists * let v:swapchoice='o'
+            \| call s:warn('fzf: E325: swap file exists: '.expand('<afile>'))
+    augroup END
+  endif
+  try
+    let empty = empty(expand('%')) && line('$') == 1 && empty(getline(1)) && !&modified
+    let autochdir = &autochdir
+    set noautochdir
+    for item in a:lines
+      if empty
+        execute 'e' s:escape(item)
+        let empty = 0
+      else
+        call s:open(cmd, item)
+      endif
+      if exists('#BufEnter') && isdirectory(item)
+        doautocmd BufEnter
+      endif
+    endfor
+  finally
+    let &autochdir = autochdir
+    silent! autocmd! fzf_swap
+  endtry
+endfunction
+
+" [name string,] [opts dict,] [fullscreen boolean]
+function! fzf#wrap(...)
+  let args = ['', {}, 0]
+  let expects = map(copy(args), 'type(v:val)')
+  let tidx = 0
+  for arg in copy(a:000)
+    let tidx = index(expects, type(arg), tidx)
+    if tidx < 0
+      throw 'invalid arguments (expected: [name string] [opts dict] [fullscreen boolean])'
+    endif
+    let args[tidx] = arg
+    let tidx += 1
+    unlet arg
+  endfor
+  let [name, opts, bang] = args
+
+  " Layout: g:fzf_layout (and deprecated g:fzf_height)
+  if bang
+    for key in s:layout_keys
+      if has_key(opts, key)
+        call remove(opts, key)
+      endif
+    endfor
+  elseif !s:has_any(opts, s:layout_keys)
+    if !exists('g:fzf_layout') && exists('g:fzf_height')
+      let opts.down = g:fzf_height
+    else
+      let opts = extend(opts, get(g:, 'fzf_layout', s:default_layout))
+    endif
+  endif
+
+  " History: g:fzf_history_dir
+  let opts.options = get(opts, 'options', '')
+  if len(name) && len(get(g:, 'fzf_history_dir', ''))
+    let dir = expand(g:fzf_history_dir)
+    if !isdirectory(dir)
+      call mkdir(dir, 'p')
+    endif
+    let opts.options = join(['--history', s:escape(dir.'/'.name), opts.options])
+  endif
+
+  " Action: g:fzf_action
+  if !s:has_any(opts, ['sink', 'sink*'])
+    let opts._action = get(g:, 'fzf_action', s:default_action)
+    let opts.options .= ' --expect='.join(keys(opts._action), ',')
+    function! opts.sink(lines) abort
+      return s:common_sink(self._action, a:lines)
+    endfunction
+    let opts['sink*'] = remove(opts, 'sink')
+  endif
+
+  return opts
+endfunction
+
 function! fzf#run(...) abort
 try
   let oshell = &shell
   set shell=sh
-  if has('nvim') && bufexists('[FZF]')
-    echohl WarningMsg
-    echomsg 'FZF is already running!'
-    echohl None
+  if has('nvim') && len(filter(range(1, bufnr('$')), 'bufname(v:val) =~# ";#FZF"'))
+    call s:warn('FZF is already running!')
     return []
   endif
   let dict   = exists('a:1') ? s:upgrade(a:1) : {}
@@ -123,6 +225,12 @@ try
     throw v:exception
   endtry
 
+  if !has_key(dict, 'source') && !empty($FZF_DEFAULT_COMMAND)
+    let temps.source = tempname()
+    call writefile(split($FZF_DEFAULT_COMMAND, "\n"), temps.source)
+    let dict.source = (empty($SHELL) ? 'sh' : $SHELL) . ' ' . s:shellesc(temps.source)
+  endif
+
   if has_key(dict, 'source')
     let source = dict.source
     let type = type(source)
@@ -133,25 +241,21 @@ try
       call writefile(source, temps.input)
       let prefix = 'cat '.s:shellesc(temps.input).'|'
     else
-      throw 'Invalid source type'
+      throw 'invalid source type'
     endif
   else
     let prefix = ''
   endif
-  let tmux = !has('nvim') && s:tmux_enabled() && s:splittable(dict)
+  let tmux = (!has('nvim') || get(g:, 'fzf_prefer_tmux', 0)) && s:tmux_enabled() && s:splittable(dict)
   let command = prefix.(tmux ? s:fzf_tmux(dict) : fzf_exec).' '.optstr.' > '.temps.result
 
-  try
-    if tmux
-      return s:execute_tmux(dict, command, temps)
-    elseif has('nvim')
-      return s:execute_term(dict, command, temps)
-    else
-      return s:execute(dict, command, temps)
-    endif
-  finally
-    call s:popd(dict)
-  endtry
+  if has('nvim') && !tmux
+    return s:execute_term(dict, command, temps)
+  endif
+
+  let lines = tmux ? s:execute_tmux(dict, command, temps) : s:execute(dict, command, temps)
+  call s:callback(dict, lines)
+  return lines
 finally
   let &shell = oshell
 endtry
@@ -170,12 +274,18 @@ function! s:fzf_tmux(dict)
   let size = ''
   for o in ['up', 'down', 'left', 'right']
     if s:present(a:dict, o)
-      let size = '-'.o[0].(a:dict[o] == 1 ? '' : a:dict[o])
+      let spec = a:dict[o]
+      if (o == 'up' || o == 'down') && spec[0] == '~'
+        let size = '-'.o[0].s:calc_size(&lines, spec, a:dict)
+      else
+        " Legacy boolean option
+        let size = '-'.o[0].(spec == 1 ? '' : substitute(spec, '^\~', '', ''))
+      endif
       break
     endif
   endfor
   return printf('LINES=%d COLUMNS=%d %s %s %s --',
-    \ &lines, &columns, s:fzf_tmux, size, (has_key(a:dict, 'source') ? '' : '-'))
+    \ &lines, &columns, s:shellesc(s:fzf_tmux), size, (has_key(a:dict, 'source') ? '' : '-'))
 endfunction
 
 function! s:splittable(dict)
@@ -189,43 +299,69 @@ function! s:pushd(dict)
       return 1
     endif
     let a:dict.prev_dir = cwd
-    execute 'chdir '.s:escape(a:dict.dir)
+    execute 'lcd' s:escape(a:dict.dir)
     let a:dict.dir = getcwd()
     return 1
   endif
   return 0
 endfunction
 
-function! s:popd(dict)
-  if has_key(a:dict, 'prev_dir')
-    execute 'chdir '.s:escape(remove(a:dict, 'prev_dir'))
+augroup fzf_popd
+  autocmd!
+  autocmd WinEnter * call s:dopopd()
+augroup END
+
+function! s:dopopd()
+  if !exists('w:fzf_prev_dir') || exists('*haslocaldir') && !haslocaldir()
+    return
   endif
+  execute 'lcd' s:escape(w:fzf_prev_dir)
+  unlet w:fzf_prev_dir
 endfunction
 
-function! s:execute(dict, command, temps)
+function! s:xterm_launcher()
+  let fmt = 'xterm -T "[fzf]" -bg "\%s" -fg "\%s" -geometry %dx%d+%d+%d -e bash -ic %%s'
+  if has('gui_macvim')
+    let fmt .= '&& osascript -e "tell application \"MacVim\" to activate"'
+  endif
+  return printf(fmt,
+    \ synIDattr(hlID("Normal"), "bg"), synIDattr(hlID("Normal"), "fg"),
+    \ &columns, &lines/2, getwinposx(), getwinposy())
+endfunction
+unlet! s:launcher
+let s:launcher = function('s:xterm_launcher')
+
+function! s:exit_handler(code, command, ...)
+  if a:code == 130
+    return 0
+  elseif a:code > 1
+    call s:error('Error running ' . a:command)
+    if !empty(a:000)
+      sleep
+    endif
+    return 0
+  endif
+  return 1
+endfunction
+
+function! s:execute(dict, command, temps) abort
   call s:pushd(a:dict)
   silent! !clear 2> /dev/null
+  let escaped = escape(substitute(a:command, '\n', '\\n', 'g'), '%#')
   if has('gui_running')
-    let launcher = get(a:dict, 'launcher', get(g:, 'fzf_launcher', s:launcher))
-    let command = printf(launcher, "'".substitute(a:command, "'", "'\"'\"'", 'g')."'")
+    let Launcher = get(a:dict, 'launcher', get(g:, 'Fzf_launcher', get(g:, 'fzf_launcher', s:launcher)))
+    let fmt = type(Launcher) == 2 ? call(Launcher, []) : Launcher
+    let command = printf(fmt, "'".substitute(escaped, "'", "'\"'\"'", 'g')."'")
   else
-    let command = a:command
+    let command = escaped
   endif
   execute 'silent !'.command
+  let exit_status = v:shell_error
   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)
-  endif
+  return s:exit_handler(exit_status, command) ? s:collect(a:temps) : []
 endfunction
 
-function! s:execute_tmux(dict, command, temps)
+function! s:execute_tmux(dict, command, temps) abort
   let command = a:command
   if s:pushd(a:dict)
     " -c '#{pane_current_path}' is only available on tmux 1.9 or above
@@ -233,15 +369,32 @@ function! s:execute_tmux(dict, command, temps)
   endif
 
   call system(command)
-  return s:callback(a:dict, a:temps)
+  let exit_status = v:shell_error
+  redraw!
+  return s:exit_handler(exit_status, command) ? s:collect(a:temps) : []
 endfunction
 
-function! s:calc_size(max, val)
-  if a:val =~ '%$'
-    return a:max * str2nr(a:val[:-2]) / 100
+function! s:calc_size(max, val, dict)
+  let val = substitute(a:val, '^\~', '', '')
+  if val =~ '%$'
+    let size = a:max * str2nr(val[:-2]) / 100
   else
-    return min([a:max, a:val])
+    let size = min([a:max, str2nr(val)])
   endif
+
+  let srcsz = -1
+  if type(get(a:dict, 'source', 0)) == type([])
+    let srcsz = len(a:dict.source)
+  endif
+
+  let opts = get(a:dict, 'options', '').$FZF_DEFAULT_OPTS
+  let margin = stridx(opts, '--inline-info') > stridx(opts, '--no-inline-info') ? 1 : 2
+  let margin += stridx(opts, '--header') > stridx(opts, '--no-header')
+  return srcsz >= 0 ? min([srcsz + margin, size]) : size
+endfunction
+
+function! s:getpos()
+  return {'tab': tabpagenr(), 'win': winnr(), 'cnt': winnr('$'), 'tcnt': tabpagenr('$')}
 endfunction
 
 function! s:split(dict)
@@ -250,60 +403,131 @@ function! s:split(dict)
   \ 'down':  ['botright', 'resize', &lines],
   \ 'left':  ['vertical topleft', 'vertical resize', &columns],
   \ 'right': ['vertical botright', 'vertical resize', &columns] }
-  let s:ptab = tabpagenr()
+  let ppos = s:getpos()
   try
     for [dir, triple] in items(directions)
       let val = get(a:dict, dir, '')
       if !empty(val)
         let [cmd, resz, max] = triple
-        let sz = s:calc_size(max, val)
+        if (dir == 'up' || dir == 'down') && val[0] == '~'
+          let sz = s:calc_size(max, val, a:dict)
+        else
+          let sz = s:calc_size(max, val, {})
+        endif
         execute cmd sz.'new'
         execute resz sz
-        return
+        return [ppos, {}]
       endif
     endfor
     if s:present(a:dict, 'window')
       execute a:dict.window
     else
-      tabnew
+      execute (tabpagenr()-1).'tabnew'
     endif
+    return [ppos, { '&l:wfw': &l:wfw, '&l:wfh': &l:wfh }]
   finally
     setlocal winfixwidth winfixheight
   endtry
 endfunction
 
-function! s:execute_term(dict, command, temps)
-  call s:split(a:dict)
-  call s:pushd(a:dict)
-
-  let fzf = { 'buf': bufnr('%'), 'dict': a:dict, 'temps': a:temps }
-  function! fzf.on_exit(id, code)
-    let tab = tabpagenr()
-    execute 'bd!' self.buf
-    if s:ptab == tab
-      wincmd p
+function! s:execute_term(dict, command, temps) abort
+  let winrest = winrestcmd()
+  let [ppos, winopts] = s:split(a:dict)
+  let fzf = { 'buf': bufnr('%'), 'ppos': ppos, 'dict': a:dict, 'temps': a:temps,
+            \ 'winopts': winopts, 'winrest': winrest, 'lines': &lines,
+            \ 'columns': &columns, 'command': a:command }
+  function! fzf.switch_back(inplace)
+    if a:inplace && bufnr('') == self.buf
+      " FIXME: Can't re-enter normal mode from terminal mode
+      " execute "normal! \<c-^>"
+      b #
+      " No other listed buffer
+      if bufnr('') == self.buf
+        enew
+      endif
     endif
+  endfunction
+  function! fzf.on_exit(id, code)
+    if s:getpos() == self.ppos " {'window': 'enew'}
+      for [opt, val] in items(self.winopts)
+        execute 'let' opt '=' val
+      endfor
+      call self.switch_back(1)
+    else
+      if bufnr('') == self.buf
+        " We use close instead of bd! since Vim does not close the split when
+        " there's no other listed buffer (nvim +'set nobuflisted')
+        close
+      endif
+      execute 'tabnext' self.ppos.tab
+      execute self.ppos.win.'wincmd w'
+    endif
+
+    if bufexists(self.buf)
+      execute 'bd!' self.buf
+    endif
+
+    if &lines == self.lines && &columns == self.columns && s:getpos() == self.ppos
+      execute self.winrest
+    endif
+
+    if !s:exit_handler(a:code, self.command, 1)
+      return
+    endif
+
     call s:pushd(self.dict)
-    try
-      call s:callback(self.dict, self.temps)
-    finally
-      call s:popd(self.dict)
-    endtry
+    let lines = s:collect(self.temps)
+    call s:callback(self.dict, lines)
+    call self.switch_back(s:getpos() == self.ppos)
   endfunction
 
-  call termopen(a:command, fzf)
-  silent file [FZF]
+  try
+    if s:present(a:dict, 'dir')
+      execute 'lcd' s:escape(a:dict.dir)
+    endif
+    call termopen(a:command . ';#FZF', fzf)
+  finally
+    if s:present(a:dict, 'dir')
+      lcd -
+    endif
+  endtry
+  setlocal nospell bufhidden=wipe nobuflisted
+  setf fzf
   startinsert
   return []
 endfunction
 
-function! s:callback(dict, temps)
-  if !filereadable(a:temps.result)
-    let lines = []
-  else
-    let lines = readfile(a:temps.result)
+function! s:collect(temps) abort
+  try
+    return filereadable(a:temps.result) ? readfile(a:temps.result) : []
+  finally
+    for tf in values(a:temps)
+      silent! call delete(tf)
+    endfor
+  endtry
+endfunction
+
+function! s:callback(dict, lines) abort
+  " Since anything can be done in the sink function, there is no telling that
+  " the change of the working directory was made by &autochdir setting.
+  "
+  " We use the following heuristic to determine whether to restore CWD:
+  " - Always restore the current directory when &autochdir is disabled.
+  "   FIXME This makes it impossible to change directory from inside the sink
+  "   function when &autochdir is not used.
+  " - In case of an error or an interrupt, a:lines will be empty.
+  "   And it will be an array of a single empty string when fzf was finished
+  "   without a match. In these cases, we presume that the change of the
+  "   directory is not expected and should be undone.
+  let popd = has_key(a:dict, 'prev_dir') &&
+        \ (!&autochdir || (empty(a:lines) || len(a:lines) == 1 && empty(a:lines[0])))
+  if popd
+    let w:fzf_prev_dir = a:dict.prev_dir
+  endif
+
+  try
     if has_key(a:dict, 'sink')
-      for line in lines
+      for line in a:lines
         if type(a:dict.sink) == 2
           call a:dict.sink(line)
         else
@@ -312,49 +536,36 @@ function! s:callback(dict, temps)
       endfor
     endif
     if has_key(a:dict, 'sink*')
-      call a:dict['sink*'](lines)
+      call a:dict['sink*'](a:lines)
     endif
+  catch
+    if stridx(v:exception, ':E325:') < 0
+      echoerr v:exception
+    endif
+  endtry
+
+  " We may have opened a new window or tab
+  if popd
+    let w:fzf_prev_dir = a:dict.prev_dir
+    call s:dopopd()
   endif
-
-  for tf in values(a:temps)
-    silent! call delete(tf)
-  endfor
-
-  return lines
 endfunction
 
 let s:default_action = {
-  \ 'ctrl-m': 'e',
-  \ 'ctrl-t': 'tabedit',
+  \ 'ctrl-t': 'tab split',
   \ 'ctrl-x': 'split',
   \ 'ctrl-v': 'vsplit' }
 
-function! s:cmd_callback(lines) abort
-  if empty(a:lines)
-    return
-  endif
-  let key = remove(a:lines, 0)
-  let cmd = get(s:action, key, 'e')
-  for item in a:lines
-    execute cmd s:escape(item)
-  endfor
-endfunction
-
 function! s:cmd(bang, ...) abort
-  let s:action = get(g:, 'fzf_action', s:default_action)
-  let args = extend(['--expect='.join(keys(s:action), ',')], a:000)
+  let args = copy(a:000)
   let opts = {}
-  if len(args) > 0 && isdirectory(expand(args[-1]))
-    let opts.dir = remove(args, -1)
+  if len(args) && isdirectory(expand(args[-1]))
+    let opts.dir = substitute(remove(args, -1), '\\\(["'']\)', '\1', 'g')
   endif
-  if !a:bang
-    let opts.down = get(g:, 'fzf_height', get(g:, 'fzf_tmux_height', s:default_height))
-  endif
-  call fzf#run(extend({'options': join(args), 'sink*': function('<sid>cmd_callback')}, opts))
+  call fzf#run(fzf#wrap('FZF', extend({'options': join(args)}, opts), a:bang))
 endfunction
 
 command! -nargs=* -complete=dir -bang FZF call s:cmd(<bang>0, <f-args>)
 
 let &cpo = s:cpo_save
 unlet s:cpo_save
-

shell/completion.bash

@@ -10,9 +10,29 @@
 # - $FZF_COMPLETION_TRIGGER (default: '**')
 # - $FZF_COMPLETION_OPTS    (default: empty)
 
+# To use custom commands instead of find, override _fzf_compgen_{path,dir}
+if ! declare -f _fzf_compgen_path > /dev/null; then
+  _fzf_compgen_path() {
+    echo "$1"
+    command find -L "$1" \
+      -name .git -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
+      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+  }
+fi
+
+if ! declare -f _fzf_compgen_dir > /dev/null; then
+  _fzf_compgen_dir() {
+    command find -L "$1" \
+      -name .git -prune -o -name .svn -prune -o -type d \
+      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+  }
+fi
+
+###########################################################
+
 _fzf_orig_completion_filter() {
-  sed 's/.*-F *\([^ ]*\).* \([^ ]*\)$/export _fzf_orig_completion_\2=\1;/' |
-  sed 's/[^a-z0-9_= ;]/_/g'
+  sed 's/^\(.*-F\) *\([^ ]*\).* \([^ ]*\)$/export _fzf_orig_completion_\3="\1 %s \3 #\2";/' |
+  awk -F= '{gsub(/[^a-z0-9_= ;]/, "_", $1); print $1"="$2}'
 }
 
 _fzf_opts_completion() {
@@ -22,20 +42,21 @@ _fzf_opts_completion() {
   prev="${COMP_WORDS[COMP_CWORD-1]}"
   opts="
     -x --extended
-    -e --extended-exact
+    -e --exact
     -i +i
     -n --nth
     -d --delimiter
     +s --no-sort
     --tac
     --tiebreak
+    --bind
     -m --multi
     --no-mouse
-    +c --no-color
-    +2 --no-256
+    --color
     --black
     --reverse
     --no-hscroll
+    --inline-info
     --prompt
     -q --query
     -1 --select-1
@@ -44,17 +65,31 @@ _fzf_opts_completion() {
     --print-query
     --expect
     --toggle-sort
-    --sync"
+    --sync
+    --cycle
+    --history
+    --history-size
+    --header
+    --header-lines
+    --margin"
 
   case "${prev}" in
   --tiebreak)
-    COMPREPLY=( $(compgen -W "length begin end index" -- ${cur}) )
+    COMPREPLY=( $(compgen -W "length begin end index" -- "$cur") )
+    return 0
+    ;;
+  --color)
+    COMPREPLY=( $(compgen -W "dark light 16 bw" -- "$cur") )
+    return 0
+    ;;
+  --history)
+    COMPREPLY=()
     return 0
     ;;
   esac
 
-  if [[ ${cur} =~ ^-|\+ ]]; then
-    COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+  if [[ "$cur" =~ ^-|\+ ]]; then
+    COMPREPLY=( $(compgen -W "${opts}" -- "$cur") )
     return 0
   fi
 
@@ -62,41 +97,43 @@ _fzf_opts_completion() {
 }
 
 _fzf_handle_dynamic_completion() {
-  local cmd orig ret
+  local cmd orig_var orig ret orig_cmd
   cmd="$1"
   shift
-
-  orig=$(eval "echo \$_fzf_orig_completion_$cmd")
+  orig_cmd="$1"
+  orig_var="_fzf_orig_completion_$cmd"
+  orig="${!orig_var##*#}"
   if [ -n "$orig" ] && type "$orig" > /dev/null 2>&1; then
     $orig "$@"
   elif [ -n "$_fzf_completion_loader" ]; then
     _completion_loader "$@"
     ret=$?
-    eval $(complete | \grep "\-F.* $cmd$" | _fzf_orig_completion_filter)
-    source $BASH_SOURCE
+    eval "$(complete | command grep "\-F.* $orig_cmd$" | _fzf_orig_completion_filter)"
+    source "${BASH_SOURCE[0]}"
     return $ret
   fi
 }
 
-_fzf_path_completion() {
+__fzf_generic_path_completion() {
   local cur base dir leftover matches trigger cmd fzf
-  [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
-  cmd=$(echo ${COMP_WORDS[0]} | sed 's/[^a-z0-9_=]/_/g')
+  [ "${FZF_TMUX:-1}" != 0 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
+  cmd=$(echo "${COMP_WORDS[0]}" | sed 's/[^a-z0-9_=]/_/g')
   COMPREPLY=()
-  trigger=${FZF_COMPLETION_TRIGGER:-**}
+  trigger=${FZF_COMPLETION_TRIGGER-'**'}
   cur="${COMP_WORDS[COMP_CWORD]}"
-  if [[ ${cur} == *"$trigger" ]]; then
+  if [[ "$cur" == *"$trigger" ]]; then
     base=${cur:0:${#cur}-${#trigger}}
-    eval base=$base
+    eval "base=$base"
 
     dir="$base"
-    while [ 1 ]; do
-      if [ -z "$dir" -o -d "$dir" ]; then
+    while true; do
+      if [ -z "$dir" ] || [ -d "$dir" ]; then
         leftover=${base/#"$dir"}
         leftover=${leftover/#\/}
-        [ "$dir" = './' ] && dir=''
+        [ -z "$dir" ] && dir='.'
+        [ "$dir" != "/" ] && dir="${dir/%\//}"
         tput sc
-        matches=$(find -L "$dir"* $1 2> /dev/null | $fzf $FZF_COMPLETION_OPTS $2 -q "$leftover" | while read item; do
+        matches=$(eval "$1 $(printf %q "$dir")" | $fzf $FZF_COMPLETION_OPTS $2 -q "$leftover" | while read -r item; do
           printf "%q$3 " "$item"
         done)
         matches=${matches% }
@@ -119,19 +156,21 @@ _fzf_path_completion() {
   fi
 }
 
-_fzf_list_completion() {
-  local cur selected trigger cmd src fzf
-  [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
-  read -r src
-  cmd=$(echo ${COMP_WORDS[0]} | sed 's/[^a-z0-9_=]/_/g')
-  trigger=${FZF_COMPLETION_TRIGGER:-**}
+_fzf_complete() {
+  local cur selected trigger cmd fzf post
+  post="$(caller 0 | awk '{print $2}')_post"
+  type -t "$post" > /dev/null 2>&1 || post=cat
+  [ "${FZF_TMUX:-1}" != 0 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
+
+  cmd=$(echo "${COMP_WORDS[0]}" | sed 's/[^a-z0-9_=]/_/g')
+  trigger=${FZF_COMPLETION_TRIGGER-'**'}
   cur="${COMP_WORDS[COMP_CWORD]}"
-  if [[ ${cur} == *"$trigger" ]]; then
+  if [[ "$cur" == *"$trigger" ]]; then
     cur=${cur:0:${#cur}-${#trigger}}
 
     tput sc
-    selected=$(eval "$src | $fzf $FZF_COMPLETION_OPTS $1 -q '$cur'" | tr '\n' ' ')
-    selected=${selected% }
+    selected=$(cat | $fzf $FZF_COMPLETION_OPTS $1 -q "$cur" | $post | tr '\n' ' ')
+    selected=${selected% } # Strip trailing space not to repeat "-o nospace"
     tput rc
 
     if [ -n "$selected" ]; then
@@ -144,29 +183,24 @@ _fzf_list_completion() {
   fi
 }
 
-_fzf_all_completion() {
-  _fzf_path_completion \
-    "-name .git -prune -o -name .svn -prune -o -type d -print -o -type f -print -o -type l -print" \
-    "-m" "" "$@"
+_fzf_path_completion() {
+  __fzf_generic_path_completion _fzf_compgen_path "-m" "" "$@"
 }
 
+# Deprecated. No file only completion.
 _fzf_file_completion() {
-  _fzf_path_completion \
-    "-name .git -prune -o -name .svn -prune -o -type f -print -o -type l -print" \
-    "-m" "" "$@"
+  _fzf_path_completion "$@"
 }
 
 _fzf_dir_completion() {
-  _fzf_path_completion \
-    "-name .git -prune -o -name .svn -prune -o -type d -print" \
-    "" "/" "$@"
+  __fzf_generic_path_completion _fzf_compgen_dir "" "/" "$@"
 }
 
-_fzf_kill_completion() {
+_fzf_complete_kill() {
   [ -n "${COMP_WORDS[COMP_CWORD]}" ] && return 1
 
   local selected fzf
-  [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
+  [ "${FZF_TMUX:-1}" != 0 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
   tput sc
   selected=$(ps -ef | sed 1d | $fzf -m $FZF_COMPLETION_OPTS | awk '{print $2}' | tr '\n' ' ')
   tput rc
@@ -177,40 +211,49 @@ _fzf_kill_completion() {
   fi
 }
 
-_fzf_telnet_completion() {
-  _fzf_list_completion '+m' "$@" << "EOF"
-  \grep -v '^\s*\(#\|$\)' /etc/hosts | awk '{if (length($2) > 0) {print $2}}' | sort -u
-EOF
+_fzf_complete_telnet() {
+  _fzf_complete '+m' "$@" < <(
+    command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0' |
+        awk '{if (length($2) > 0) {print $2}}' | sort -u
+  )
 }
 
-_fzf_ssh_completion() {
-  _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 $2}' | sort -u
-EOF
+_fzf_complete_ssh() {
+  _fzf_complete '+m' "$@" < <(
+    cat <(cat ~/.ssh/config /etc/ssh/ssh_config 2> /dev/null | command grep -i '^host' | command grep -v '*') \
+        <(command grep -oE '^[^ ]+' ~/.ssh/known_hosts | tr ',' '\n' | awk '{ print $1 " " $1 }') \
+        <(command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
+        awk '{if (length($2) > 0) {print $2}}' | sort -u
+  )
 }
 
-_fzf_env_var_completion() {
-  _fzf_list_completion '-m' "$@" << "EOF"
-  declare -xp | sed 's/=.*//' | sed 's/.* //'
-EOF
+_fzf_complete_unset() {
+  _fzf_complete '-m' "$@" < <(
+    declare -xp | sed 's/=.*//' | sed 's/.* //'
+  )
 }
 
-_fzf_alias_completion() {
-  _fzf_list_completion '-m' "$@" << "EOF"
-  alias | sed 's/=.*//' | sed 's/.* //'
-EOF
+_fzf_complete_export() {
+  _fzf_complete '-m' "$@" < <(
+    declare -xp | sed 's/=.*//' | sed 's/.* //'
+  )
+}
+
+_fzf_complete_unalias() {
+  _fzf_complete '-m' "$@" < <(
+    alias | sed 's/=.*//' | sed 's/.* //'
+  )
 }
 
 # fzf options
-complete -F _fzf_opts_completion fzf
+complete -o default -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"
+d_cmds="${FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir}"
 a_cmds="
+  awk cat diff diff3
+  emacs emacsclient ex file ftp g++ gcc gvim head hg java
+  javac ld less more mvim nvim patch perl python ruby
+  sed sftp sort source tail tee uniq vi view vim wc xdg-open
   basename bunzip2 bzip2 chmod chown curl cp dirname du
   find git grep gunzip gzip hg jar
   ln ls mv open rm rsync scp
@@ -218,42 +261,54 @@ a_cmds="
 x_cmds="kill ssh telnet unset unalias export"
 
 # Preserve existing completion
-if [ "$_fzf_completion_loaded" != '0.8.6-1' ]; then
+if [ "$_fzf_completion_loaded" != '0.11.3' ]; 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
+  eval $(complete | command grep '\-F' | command grep -v _fzf_ |
+    command grep -E " ($(echo $d_cmds $a_cmds $x_cmds | sed 's/ /|/g' | sed 's/+/\\+/g'))$" | _fzf_orig_completion_filter)
+  export _fzf_completion_loaded=0.11.3
 fi
 
 if type _completion_loader > /dev/null 2>&1; then
   _fzf_completion_loader=1
 fi
 
-# Directory
-for cmd in $d_cmds; do
-  complete -F _fzf_dir_completion -o nospace -o plusdirs $cmd
-done
-
-# File
-for cmd in $f_cmds; do
-  complete -F _fzf_file_completion -o default -o bashdefault $cmd
-done
+_fzf_defc() {
+  local cmd func opts orig_var orig def
+  cmd="$1"
+  func="$2"
+  opts="$3"
+  orig_var="_fzf_orig_completion_$cmd"
+  orig="${!orig_var}"
+  if [ -n "$orig" ]; then
+    printf -v def "$orig" "$func"
+    eval "$def"
+  else
+    complete -F "$func" $opts "$cmd"
+  fi
+}
 
 # Anything
 for cmd in $a_cmds; do
-  complete -F _fzf_all_completion -o default -o bashdefault $cmd
+  _fzf_defc "$cmd" _fzf_path_completion "-o default -o bashdefault"
 done
 
+# Directory
+for cmd in $d_cmds; do
+  _fzf_defc "$cmd" _fzf_dir_completion "-o nospace -o plusdirs"
+done
+
+unset _fzf_defc
+
 # Kill completion
-complete -F _fzf_kill_completion -o nospace -o default -o bashdefault kill
+complete -F _fzf_complete_kill -o nospace -o default -o bashdefault kill
 
 # Host completion
-complete -F _fzf_ssh_completion -o default -o bashdefault ssh
-complete -F _fzf_telnet_completion -o default -o bashdefault telnet
+complete -F _fzf_complete_ssh -o default -o bashdefault ssh
+complete -F _fzf_complete_telnet -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
+complete -F _fzf_complete_unset -o default -o bashdefault unset
+complete -F _fzf_complete_export -o default -o bashdefault export
+complete -F _fzf_complete_unalias -o default -o bashdefault unalias
 
-unset cmd d_cmds f_cmds a_cmds x_cmds
+unset cmd d_cmds a_cmds x_cmds

shell/completion.zsh

@@ -0,0 +1,194 @@
+#!/bin/zsh
+#     ____      ____
+#    / __/___  / __/
+#   / /_/_  / / /_
+#  / __/ / /_/ __/
+# /_/   /___/_/-completion.zsh
+#
+# - $FZF_TMUX               (default: 1)
+# - $FZF_TMUX_HEIGHT        (default: '40%')
+# - $FZF_COMPLETION_TRIGGER (default: '**')
+# - $FZF_COMPLETION_OPTS    (default: empty)
+
+# To use custom commands instead of find, override _fzf_compgen_{path,dir}
+if ! declare -f _fzf_compgen_path > /dev/null; then
+  _fzf_compgen_path() {
+    echo "$1"
+    command find -L "$1" \
+      -name .git -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
+      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+  }
+fi
+
+if ! declare -f _fzf_compgen_dir > /dev/null; then
+  _fzf_compgen_dir() {
+    command find -L "$1" \
+      -name .git -prune -o -name .svn -prune -o -type d \
+      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+  }
+fi
+
+###########################################################
+
+__fzf_generic_path_completion() {
+  local base lbuf compgen fzf_opts suffix tail fzf dir leftover matches
+  # (Q) flag removes a quoting level: "foo\ bar" => "foo bar"
+  base=${(Q)1}
+  lbuf=$2
+  compgen=$3
+  fzf_opts=$4
+  suffix=$5
+  tail=$6
+  [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
+
+  setopt localoptions nonomatch
+  dir="$base"
+  while [ 1 ]; do
+    if [ -z "$dir" -o -d ${~dir} ]; then
+      leftover=${base/#"$dir"}
+      leftover=${leftover/#\/}
+      [ -z "$dir" ] && dir='.'
+      [ "$dir" != "/" ] && dir="${dir/%\//}"
+      dir=${~dir}
+      matches=$(eval "$compgen $(printf %q "$dir")" | ${=fzf} ${=FZF_COMPLETION_OPTS} ${=fzf_opts} -q "$leftover" | while read item; do
+        echo -n "${(q)item}$suffix "
+      done)
+      matches=${matches% }
+      if [ -n "$matches" ]; then
+        LBUFFER="$lbuf$matches$tail"
+      fi
+      zle redisplay
+      typeset -f zle-line-init >/dev/null && zle zle-line-init
+      break
+    fi
+    dir=$(dirname "$dir")
+    dir=${dir%/}/
+  done
+}
+
+_fzf_path_completion() {
+  __fzf_generic_path_completion "$1" "$2" _fzf_compgen_path \
+    "-m" "" " "
+}
+
+_fzf_dir_completion() {
+  __fzf_generic_path_completion "$1" "$2" _fzf_compgen_dir \
+    "" "/" ""
+}
+
+_fzf_feed_fifo() (
+  command rm -f "$1"
+  mkfifo "$1"
+  cat <&0 > "$1" &
+)
+
+_fzf_complete() {
+  local fifo fzf_opts lbuf fzf matches post
+  fifo="${TMPDIR:-/tmp}/fzf-complete-fifo-$$"
+  fzf_opts=$1
+  lbuf=$2
+  post="${funcstack[2]}_post"
+  type $post > /dev/null 2>&1 || post=cat
+
+  [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
+
+  _fzf_feed_fifo "$fifo"
+  matches=$(cat "$fifo" | ${=fzf} ${=FZF_COMPLETION_OPTS} ${=fzf_opts} -q "${(Q)prefix}" | $post | tr '\n' ' ')
+  if [ -n "$matches" ]; then
+    LBUFFER="$lbuf$matches"
+  fi
+  zle redisplay
+  typeset -f zle-line-init >/dev/null && zle zle-line-init
+  command rm -f "$fifo"
+}
+
+_fzf_complete_telnet() {
+  _fzf_complete '+m' "$@" < <(
+    command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0' |
+        awk '{if (length($2) > 0) {print $2}}' | sort -u
+  )
+}
+
+_fzf_complete_ssh() {
+  _fzf_complete '+m' "$@" < <(
+    cat <(cat ~/.ssh/config /etc/ssh/ssh_config 2> /dev/null | command grep -i '^host' | command grep -v '*') \
+        <(command grep -oE '^[^ ]+' ~/.ssh/known_hosts | tr ',' '\n' | awk '{ print $1 " " $1 }') \
+        <(command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
+        awk '{if (length($2) > 0) {print $2}}' | sort -u
+  )
+}
+
+_fzf_complete_export() {
+  _fzf_complete '-m' "$@" < <(
+    declare -xp | sed 's/=.*//' | sed 's/.* //'
+  )
+}
+
+_fzf_complete_unset() {
+  _fzf_complete '-m' "$@" < <(
+    declare -xp | sed 's/=.*//' | sed 's/.* //'
+  )
+}
+
+_fzf_complete_unalias() {
+  _fzf_complete '+m' "$@" < <(
+    alias | sed 's/=.*//'
+  )
+}
+
+fzf-completion() {
+  local tokens cmd prefix trigger tail fzf matches lbuf d_cmds
+  setopt localoptions noshwordsplit noksh_arrays
+
+  # http://zsh.sourceforge.net/FAQ/zshfaq03.html
+  # http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion-Flags
+  tokens=(${(z)LBUFFER})
+  if [ ${#tokens} -lt 1 ]; then
+    zle ${fzf_default_completion:-expand-or-complete}
+    return
+  fi
+
+  cmd=${tokens[1]}
+
+  # Explicitly allow for empty trigger.
+  trigger=${FZF_COMPLETION_TRIGGER-'**'}
+  [ -z "$trigger" -a ${LBUFFER[-1]} = ' ' ] && tokens+=("")
+
+  tail=${LBUFFER:$(( ${#LBUFFER} - ${#trigger} ))}
+  # Kill completion (do not require trigger sequence)
+  if [ $cmd = kill -a ${LBUFFER[-1]} = ' ' ]; then
+    [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
+    matches=$(ps -ef | sed 1d | ${=fzf} ${=FZF_COMPLETION_OPTS} -m | awk '{print $2}' | tr '\n' ' ')
+    if [ -n "$matches" ]; then
+      LBUFFER="$LBUFFER$matches"
+    fi
+    zle redisplay
+    typeset -f zle-line-init >/dev/null && zle zle-line-init
+  # Trigger sequence given
+  elif [ ${#tokens} -gt 1 -a "$tail" = "$trigger" ]; then
+    d_cmds=(${=FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir})
+
+    [ -z "$trigger"      ] && prefix=${tokens[-1]} || prefix=${tokens[-1]:0:-${#trigger}}
+    [ -z "${tokens[-1]}" ] && lbuf=$LBUFFER        || lbuf=${LBUFFER:0:-${#tokens[-1]}}
+
+    if eval "type _fzf_complete_${cmd} > /dev/null"; then
+      eval "prefix=\"$prefix\" _fzf_complete_${cmd} \"$lbuf\""
+    elif [ ${d_cmds[(i)$cmd]} -le ${#d_cmds} ]; then
+      _fzf_dir_completion "$prefix" "$lbuf"
+    else
+      _fzf_path_completion "$prefix" "$lbuf"
+    fi
+  # Fall back to default completion
+  else
+    zle ${fzf_default_completion:-expand-or-complete}
+  fi
+}
+
+[ -z "$fzf_default_completion" ] && {
+  binding=$(bindkey '^I')
+  [[ $binding =~ 'undefined-key' ]] || fzf_default_completion=$binding[(s: :w)2]
+  unset binding
+}
+
+zle     -N   fzf-completion
+bindkey '^I' fzf-completion

shell/key-bindings.bash

@@ -1,10 +1,11 @@
 # Key bindings
 # ------------
 __fzf_select__() {
-  command find -L . \( -path '*/\.*' -o -fstype 'dev' -o -fstype 'proc' \) -prune \
+  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
     -o -type f -print \
     -o -type d -print \
-    -o -type l -print 2> /dev/null | sed 1d | cut -b3- | fzf -m | while read item; do
+    -o -type l -print 2> /dev/null | sed 1d | cut -b3-"}"
+  eval "$cmd | fzf -m $FZF_CTRL_T_OPTS" | while read -r item; do
     printf '%q ' "$item"
   done
   echo
@@ -13,7 +14,7 @@ __fzf_select__() {
 if [[ $- =~ i ]]; then
 
 __fzfcmd() {
-  [ ${FZF_TMUX:-1} -eq 1 ] && echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
+  [ "${FZF_TMUX:-1}" != 0 ] && echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
 }
 
 __fzf_select_tmux__() {
@@ -24,60 +25,101 @@ __fzf_select_tmux__() {
   else
     height="-l $height"
   fi
-  tmux split-window $height "cd $(printf %q "$PWD");bash -c 'source ~/.fzf.bash; tmux send-keys -t $TMUX_PANE \"\$(__fzf_select__)\"'"
+
+  tmux split-window $height "cd $(printf %q "$PWD"); FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS") PATH=$(printf %q "$PATH") FZF_CTRL_T_COMMAND=$(printf %q "$FZF_CTRL_T_COMMAND") FZF_CTRL_T_OPTS=$(printf %q "$FZF_CTRL_T_OPTS") bash -c 'source \"${BASH_SOURCE[0]}\"; RESULT=\"\$(__fzf_select__)\"; tmux setb -b fzf \"\$RESULT\" \\; pasteb -b fzf -t $TMUX_PANE \\; deleteb -b fzf || tmux send-keys -t $TMUX_PANE \"\$RESULT\"'"
+}
+
+fzf-file-widget() {
+  if __fzf_use_tmux__; then
+    __fzf_select_tmux__
+  else
+    local selected="$(__fzf_select__)"
+    READLINE_LINE="${READLINE_LINE:0:$READLINE_POINT}$selected${READLINE_LINE:$READLINE_POINT}"
+    READLINE_POINT=$(( READLINE_POINT + ${#selected} ))
+  fi
 }
 
 __fzf_cd__() {
-  local dir
-  dir=$(command find -L ${1:-.} \( -path '*/\.*' -o -fstype 'dev' -o -fstype 'proc' \) -prune \
-    -o -type d -print 2> /dev/null | sed 1d | cut -b3- | $(__fzfcmd) +m) && printf 'cd %q' "$dir"
+  local cmd dir
+  cmd="${FZF_ALT_C_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
+    -o -type d -print 2> /dev/null | sed 1d | cut -b3-"}"
+  dir=$(eval "$cmd | $(__fzfcmd) +m $FZF_ALT_C_OPTS") && printf 'cd %q' "$dir"
 }
 
-__fzf_history__() {
-  HISTTIMEFORMAT= history | $(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r | sed "s/ *[0-9]* *//"
+__fzf_history__() (
+  local line
+  shopt -u nocaseglob nocasematch
+  line=$(
+    HISTTIMEFORMAT= history |
+    eval "$(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS" |
+    command grep '^ *[0-9]') &&
+    if [[ $- =~ H ]]; then
+      sed 's/^ *\([0-9]*\)\** .*/!\1/' <<< "$line"
+    else
+      sed 's/^ *\([0-9]*\)\** *//' <<< "$line"
+    fi
+)
+
+__fzf_use_tmux__() {
+  [ -n "$TMUX_PANE" ] && [ "${FZF_TMUX:-1}" != 0 ] && [ ${LINES:-40} -gt 15 ]
 }
 
-__use_tmux=0
-[ -n "$TMUX_PANE" -a ${FZF_TMUX:-1} -ne 0 -a ${LINES:-40} -gt 15 ] && __use_tmux=1
+[ $BASH_VERSINFO -gt 3 ] && __use_bind_x=1 || __use_bind_x=0
+__fzf_use_tmux__ && __use_tmux=1 || __use_tmux=0
 
-if [ -z "$(set -o | \grep '^vi.*on')" ]; then
+if [[ ! -o vi ]]; then
   # Required to refresh the prompt after fzf
   bind '"\er": redraw-current-line'
+  bind '"\e^": history-expand-line'
 
   # CTRL-T - Paste the selected file path into the command line
-  if [ $__use_tmux -eq 1 ]; then
+  if [ $__use_bind_x -eq 1 ]; then
+    bind -x '"\C-t": "fzf-file-widget"'
+  elif [ $__use_tmux -eq 1 ]; then
     bind '"\C-t": " \C-u \C-a\C-k$(__fzf_select_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$(__fzf_select__)\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$(__fzf_history__)\e\C-e\er"'
+  bind '"\C-r": " \C-e\C-u`__fzf_history__`\e\C-e\e^\er"'
 
   # ALT-C - cd into the selected directory
-  bind '"\ec": " \C-e\C-u$(__fzf_cd__)\e\C-e\er\C-m"'
+  bind '"\ec": " \C-e\C-u`__fzf_cd__`\e\C-e\er\C-m"'
 else
+  # We'd usually use "\e" to enter vi-movement-mode so we can do our magic,
+  # but this incurs a very noticeable delay of a half second or so,
+  # because many other commands start with "\e".
+  # Instead, we bind an unused key, "\C-x\C-a",
+  # to also enter vi-movement-mode,
+  # and then use that thereafter.
+  # (We imagine that "\C-x\C-a" is relatively unlikely to be in use.)
+  bind '"\C-x\C-a": vi-movement-mode'
+
   bind '"\C-x\C-e": shell-expand-line'
   bind '"\C-x\C-r": redraw-current-line'
+  bind '"\C-x^": history-expand-line'
 
   # CTRL-T - Paste the selected file path into the command line
   # - FIXME: Selected items are attached to the end regardless of cursor position
-  if [ $__use_tmux -eq 1 ]; then
-    bind '"\C-t": "\e$a \eddi$(__fzf_select_tmux__)\C-x\C-e\e0P$xa"'
+  if [ $__use_bind_x -eq 1 ]; then
+    bind -x '"\C-t": "fzf-file-widget"'
+  elif [ $__use_tmux -eq 1 ]; then
+    bind '"\C-t": "\C-x\C-a$a \C-x\C-addi$(__fzf_select_tmux__)\C-x\C-e\C-x\C-a0P$xa"'
   else
-    bind '"\C-t": "\e$a \eddi$(__fzf_select__)\C-x\C-e\e0Px$a \C-x\C-r\exa "'
+    bind '"\C-t": "\C-x\C-a$a \C-x\C-addi$(__fzf_select__)\C-x\C-e\C-x\C-a0Px$a \C-x\C-r\C-x\C-axa "'
   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$(__fzf_history__)\C-x\C-e\e$a\C-x\C-r"'
+  bind '"\C-r": "\C-x\C-addi$(__fzf_history__)\C-x\C-e\C-x^\C-x\C-a$a\C-x\C-r"'
   bind -m vi-command '"\C-r": "i\C-r"'
 
   # ALT-C - cd into the selected directory
-  bind '"\ec": "\eddi$(__fzf_cd__)\C-x\C-e\C-x\C-r\C-m"'
-  bind -m vi-command '"\ec": "i\ec"'
+  bind '"\ec": "\C-x\C-addi$(__fzf_cd__)\C-x\C-e\C-x\C-r\C-m"'
+  bind -m vi-command '"\ec": "ddi$(__fzf_cd__)\C-x\C-e\C-x\C-r\C-m"'
 fi
 
-unset __use_tmux
+unset -v __use_tmux __use_bind_x
 
 fi

shell/key-bindings.fish

@@ -13,27 +13,31 @@ function fzf_key_bindings
     end
   end
 
-  function __fzf_ctrl_t
-    command find -L . \( -path '*/\.*' -o -fstype 'dev' -o -fstype 'proc' \) -prune \
+  function fzf-file-widget
+    set -q FZF_CTRL_T_COMMAND; or set -l FZF_CTRL_T_COMMAND "
+    command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
       -o -type f -print \
       -o -type d -print \
-      -o -type l -print 2> /dev/null | sed 1d | cut -b3- | eval (__fzfcmd) -m > $TMPDIR/fzf.result
-    and commandline -i (cat $TMPDIR/fzf.result | __fzf_escape)
+      -o -type l -print 2> /dev/null | sed 1d | cut -b3-"
+    eval "$FZF_CTRL_T_COMMAND | "(__fzfcmd)" -m $FZF_CTRL_T_OPTS > $TMPDIR/fzf.result"
+    and for i in (seq 20); commandline -i (cat $TMPDIR/fzf.result | __fzf_escape) 2> /dev/null; and break; sleep 0.1; end
     commandline -f repaint
     rm -f $TMPDIR/fzf.result
   end
 
-  function __fzf_ctrl_r
-    history | eval (__fzfcmd) +s +m --tiebreak=index --toggle-sort=ctrl-r > $TMPDIR/fzf.result
+  function fzf-history-widget
+    history | eval (__fzfcmd) +s +m --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS > $TMPDIR/fzf.result
     and commandline (cat $TMPDIR/fzf.result)
     commandline -f repaint
     rm -f $TMPDIR/fzf.result
   end
 
-  function __fzf_alt_c
+  function fzf-cd-widget
+    set -q FZF_ALT_C_COMMAND; or set -l FZF_ALT_C_COMMAND "
+    command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
+      -o -type d -print 2> /dev/null | sed 1d | cut -b3-"
     # Fish hangs if the command before pipe redirects (2> /dev/null)
-    command find -L . \( -path '*/\.*' -o -fstype 'dev' -o -fstype 'proc' \) \
-      -prune -o -type d -print 2> /dev/null | sed 1d | cut -b3- | eval (__fzfcmd) +m > $TMPDIR/fzf.result
+    eval "$FZF_ALT_C_COMMAND | "(__fzfcmd)" +m $FZF_ALT_C_OPTS > $TMPDIR/fzf.result"
     [ (cat $TMPDIR/fzf.result | wc -l) -gt 0 ]
     and cd (cat $TMPDIR/fzf.result)
     commandline -f repaint
@@ -54,8 +58,14 @@ function fzf_key_bindings
     end
   end
 
-  bind \ct '__fzf_ctrl_t'
-  bind \cr '__fzf_ctrl_r'
-  bind \ec '__fzf_alt_c'
+  bind \ct fzf-file-widget
+  bind \cr fzf-history-widget
+  bind \ec fzf-cd-widget
+
+  if bind -M insert > /dev/null 2>&1
+    bind -M insert \ct fzf-file-widget
+    bind -M insert \cr fzf-history-widget
+    bind -M insert \ec fzf-cd-widget
+  end
 end
 

shell/key-bindings.zsh

@@ -1,47 +1,65 @@
 # Key bindings
 # ------------
+if [[ $- == *i* ]]; then
+
 # CTRL-T - Paste the selected file path(s) into the command line
 __fsel() {
-  command find -L . \( -path '*/\.*' -o -fstype 'dev' -o -fstype 'proc' \) -prune \
+  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
     -o -type f -print \
     -o -type d -print \
-    -o -type l -print 2> /dev/null | sed 1d | cut -b3- | $(__fzfcmd) -m | while read item; do
-    printf '%q ' "$item"
+    -o -type l -print 2> /dev/null | sed 1d | cut -b3-"}"
+  setopt localoptions pipefail 2> /dev/null
+  eval "$cmd | $(__fzfcmd) -m $FZF_CTRL_T_OPTS" | while read item; do
+    echo -n "${(q)item} "
   done
+  local ret=$?
   echo
+  return $ret
 }
 
 __fzfcmd() {
   [ ${FZF_TMUX:-1} -eq 1 ] && echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
 }
 
-if [[ $- =~ i ]]; then
-
 fzf-file-widget() {
   LBUFFER="${LBUFFER}$(__fsel)"
+  local ret=$?
   zle redisplay
+  typeset -f zle-line-init >/dev/null && zle zle-line-init
+  return $ret
 }
 zle     -N   fzf-file-widget
 bindkey '^T' fzf-file-widget
 
 # ALT-C - cd into the selected directory
 fzf-cd-widget() {
-  cd "${$(command find -L . \( -path '*/\.*' -o -fstype 'dev' -o -fstype 'proc' \) -prune \
-    -o -type d -print 2> /dev/null | sed 1d | cut -b3- | $(__fzfcmd) +m):-.}"
+  local cmd="${FZF_ALT_C_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
+    -o -type d -print 2> /dev/null | sed 1d | cut -b3-"}"
+  setopt localoptions pipefail 2> /dev/null
+  cd "${$(eval "$cmd | $(__fzfcmd) +m $FZF_ALT_C_OPTS"):-.}"
+  local ret=$?
   zle reset-prompt
+  typeset -f zle-line-init >/dev/null && zle zle-line-init
+  return $ret
 }
 zle     -N    fzf-cd-widget
 bindkey '\ec' fzf-cd-widget
 
 # CTRL-R - Paste the selected command from history into the command line
 fzf-history-widget() {
-  local selected
-  if selected=$(fc -l 1 | $(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r -q "$LBUFFER"); then
-    num=$(echo "$selected" | head -1 | awk '{print $1}' | sed 's/[^0-9]//g')
-    LBUFFER=!$num
-    zle expand-history
+  local selected num
+  setopt localoptions noglobsubst pipefail 2> /dev/null
+  selected=( $(fc -l 1 | eval "$(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS -q ${(q)LBUFFER}") )
+  local ret=$?
+  if [ -n "$selected" ]; then
+    num=$selected[1]
+    if [ -n "$num" ]; then
+      zle vi-fetch-history -n $num
+    fi
   fi
   zle redisplay
+  typeset -f zle-line-init >/dev/null && zle zle-line-init
+  return $ret
 }
 zle     -N   fzf-history-widget
 bindkey '^R' fzf-history-widget

src/Dockerfile.android

@@ -0,0 +1,40 @@
+FROM ubuntu:14.04
+MAINTAINER Junegunn Choi <junegunn.c@gmail.com>
+
+# apt-get
+RUN apt-get update && apt-get -y upgrade && \
+    apt-get install -y --force-yes git curl build-essential
+
+# Install Go 1.4
+RUN cd / && curl \
+    https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz | \
+    tar -xz && mv go go1.4 && \
+    sed -i 's@#define PTHREAD_KEYS_MAX 128@@' /go1.4/src/runtime/cgo/gcc_android_arm.c
+
+ENV GOROOT /go1.4
+ENV PATH /go1.4/bin:$PATH
+
+RUN cd / && \
+    curl -O http://dl.google.com/android/ndk/android-ndk-r10e-linux-x86_64.bin && \
+    chmod 755 /android-ndk* && /android-ndk-r10e-linux-x86_64.bin && \
+    mv android-ndk-r10e /android-ndk
+
+RUN cd /android-ndk && bash ./build/tools/make-standalone-toolchain.sh --platform=android-21 --install-dir=/ndk --arch=arm
+
+ENV NDK_CC /ndk/bin/arm-linux-androideabi-gcc
+
+RUN cd $GOROOT/src && \
+    CC_FOR_TARGET=$NDK_CC GOOS=android GOARCH=arm GOARM=7 ./make.bash
+
+RUN cd / && curl \
+    http://ftp.gnu.org/gnu/ncurses/ncurses-5.9.tar.gz | \
+    tar -xz && cd /ncurses-5.9 && \
+    ./configure CC=$NDK_CC CFLAGS="-fPIE -march=armv7-a -mfpu=neon -mhard-float -Wl,--no-warn-mismatch" LDFLAGS="-march=armv7-a -Wl,--no-warn-mismatch" --host=arm-linux --enable-overwrite --enable-const --without-cxx-binding  --without-shared --without-debug --enable-widec --enable-ext-colors --enable-ext-mouse --enable-pc-files --with-pkg-config-libdir=$PKG_CONFIG_LIBDIR --without-manpages --without-ada --disable-shared --without-tests --prefix=/ndk/sysroot/usr --with-default-terminfo-dirs=/usr/share/terminfo --with-terminfo-dirs=/usr/share/terminfo ac_cv_header_locale_h=n ac_cv_func_getpwent=no ac_cv_func_getpwnam=no ac_cv_func_getpwuid=no && \
+    sed -i 's@#define HAVE_LOCALE_H 1@/* #undef HAVE_LOCALE_H */@' include/ncurses_cfg.h && \
+    make && \
+    sed -i '0,/echo.*/{s/echo.*/exit 0/}' misc/run_tic.sh && \
+    make install && \
+    mv /ndk/sysroot/usr/lib/libncursesw.a /ndk/sysroot/usr/lib/libncurses.a
+
+# Default CMD
+CMD cd /fzf/src && /bin/bash

src/Dockerfile.arch

@@ -2,6 +2,7 @@ FROM base/archlinux:2014.07.03
 MAINTAINER Junegunn Choi <junegunn.c@gmail.com>
 
 # apt-get
+RUN pacman-key --populate archlinux && pacman-key --refresh-keys
 RUN pacman-db-upgrade && pacman -Syu --noconfirm base-devel git
 
 # Install Go 1.4
@@ -9,7 +10,6 @@ RUN cd / && curl \
     https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz | \
     tar -xz && mv go go1.4
 
-ENV GOPATH /go
 ENV GOROOT /go1.4
 ENV PATH /go1.4/bin:$PATH
 
@@ -19,9 +19,6 @@ RUN echo '[multilib]' >> /etc/pacman.conf && \
     pacman-db-upgrade && yes | pacman -Sy gcc-multilib lib32-ncurses && \
     cd $GOROOT/src && GOARCH=386 ./make.bash
 
-# Volume
-VOLUME /go
-
 # Default CMD
-CMD cd /go/src/github.com/junegunn/fzf/src && /bin/bash
+CMD cd /fzf/src && /bin/bash
 

src/Dockerfile.centos

@@ -1,21 +1,32 @@
-FROM centos:centos7
+FROM centos:centos6
 MAINTAINER Junegunn Choi <junegunn.c@gmail.com>
 
 # yum
-RUN yum install -y git gcc make tar ncurses-devel
+RUN yum install -y git gcc make tar glibc-devel glibc-devel.i686 \
+    ncurses-devel ncurses-static ncurses-devel.i686 \
+    gpm-devel gpm-static libgcc.i686
 
 # Install Go 1.4
 RUN cd / && curl \
     https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz | \
     tar -xz && mv go go1.4
 
-ENV GOPATH /go
-ENV GOROOT /go1.4
-ENV PATH /go1.4/bin:$PATH
+# Install Go 1.7
+RUN cd / && curl \
+    https://storage.googleapis.com/golang/go1.7.linux-amd64.tar.gz | \
+    tar -xz && mv go go1.7
 
-# Volume
-VOLUME /go
+# Install RPMs for building static 32-bit binary
+RUN curl ftp://ftp.pbone.net/mirror/ftp.centos.org/6.8/os/i386/Packages/ncurses-static-5.7-4.20090207.el6.i686.rpm -o rpm && rpm -i rpm && \
+    curl ftp://ftp.pbone.net/mirror/ftp.centos.org/6.8/os/i386/Packages/gpm-static-1.20.6-12.el6.i686.rpm -o rpm && rpm -i rpm
+
+ENV GOROOT_BOOTSTRAP /go1.4
+ENV GOROOT /go1.7
+ENV PATH /go1.7/bin:$PATH
+
+# For i386 build
+RUN cd $GOROOT/src && GOARCH=386 ./make.bash
 
 # Default CMD
-CMD cd /go/src/github.com/junegunn/fzf/src && /bin/bash
+CMD cd /fzf/src && /bin/bash
 

src/Dockerfile.ubuntu

@@ -3,14 +3,13 @@ MAINTAINER Junegunn Choi <junegunn.c@gmail.com>
 
 # apt-get
 RUN apt-get update && apt-get -y upgrade && \
-    apt-get install -y --force-yes git curl build-essential libncurses-dev
+    apt-get install -y --force-yes git curl build-essential libncurses-dev libgpm-dev
 
 # Install Go 1.4
 RUN cd / && curl \
     https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz | \
     tar -xz && mv go go1.4
 
-ENV GOPATH /go
 ENV GOROOT /go1.4
 ENV PATH /go1.4/bin:$PATH
 
@@ -18,9 +17,6 @@ ENV PATH /go1.4/bin:$PATH
 RUN apt-get install -y lib32ncurses5-dev && \
     cd $GOROOT/src && GOARCH=386 ./make.bash
 
-# Volume
-VOLUME /go
-
 # Default CMD
-CMD cd /go/src/github.com/junegunn/fzf/src && /bin/bash
+CMD cd /fzf/src && /bin/bash
 

src/LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015 Junegunn Choi
+Copyright (c) 2016 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

src/Makefile

@@ -1,74 +1,116 @@
-ifndef GOPATH
-$(error GOPATH is undefined)
-endif
-
+ifndef GOOS
 UNAME_S := $(shell uname -s)
 ifeq ($(UNAME_S),Darwin)
 	GOOS := darwin
 else ifeq ($(UNAME_S),Linux)
 	GOOS := linux
 endif
+endif
 
-ifneq ($(shell uname -m),x86_64)
+SOURCES     := $(wildcard *.go */*.go)
+ROOTDIR     := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
+BINDIR      := $(shell dirname $(ROOTDIR))/bin
+GOPATH      := $(shell dirname $(ROOTDIR))/gopath
+SRCDIR      := $(GOPATH)/src/github.com/junegunn/fzf/src
+DOCKEROPTS  := -i -t -v $(ROOTDIR):/fzf/src
+BINARY32    := fzf-$(GOOS)_386
+BINARY64    := fzf-$(GOOS)_amd64
+BINARYARM7  := fzf-$(GOOS)_arm7
+VERSION     := $(shell awk -F= '/version =/ {print $$2}' constants.go | tr -d "\" ")
+RELEASE32   := fzf-$(VERSION)-$(GOOS)_386
+RELEASE64   := fzf-$(VERSION)-$(GOOS)_amd64
+RELEASEARM7 := fzf-$(VERSION)-$(GOOS)_arm7
+export GOPATH
+
+UNAME_M := $(shell uname -m)
+ifeq ($(UNAME_M),x86_64)
+	BINARY := $(BINARY64)
+else ifeq ($(UNAME_M),i686)
+	BINARY := $(BINARY32)
+else
 $(error "Build on $(UNAME_M) is not supported, yet.")
 endif
 
-SOURCES   := $(wildcard *.go */*.go)
-BINDIR    := ../bin
+all: fzf/$(BINARY)
 
-BINARY32  := fzf-$(GOOS)_386
-BINARY64  := fzf-$(GOOS)_amd64
-VERSION    = $(shell fzf/$(BINARY64) --version)
-RELEASE32  = fzf-$(VERSION)-$(GOOS)_386
-RELEASE64  = fzf-$(VERSION)-$(GOOS)_amd64
+release: test fzf/$(BINARY32) fzf/$(BINARY64)
+	-cd fzf && cp $(BINARY32) $(RELEASE32) && tar -czf $(RELEASE32).tgz $(RELEASE32)
+	cd fzf && cp $(BINARY64) $(RELEASE64) && tar -czf $(RELEASE64).tgz $(RELEASE64) && \
+	rm -f $(RELEASE32) $(RELEASE64)
 
-all: release
+$(SRCDIR):
+	mkdir -p $(shell dirname $(SRCDIR))
+	ln -s $(ROOTDIR) $(SRCDIR)
 
-release: build
-	cd fzf && \
-	cp $(BINARY32) $(RELEASE32) && tar -czf $(RELEASE32).tgz $(RELEASE32) && \
-	cp $(BINARY64) $(RELEASE64) && tar -czf $(RELEASE64).tgz $(RELEASE64) && \
-	rm $(RELEASE32) $(RELEASE64)
+deps: $(SRCDIR) $(SOURCES)
+	cd $(SRCDIR) && go get
 
-build: test fzf/$(BINARY32) fzf/$(BINARY64)
+android-build: $(SRCDIR)
+	cd $(SRCDIR) && GOARCH=arm GOARM=7 CGO_ENABLED=1 go get
+	cd $(SRCDIR)/fzf && GOARCH=arm GOARM=7 CGO_ENABLED=1 go build -a -ldflags="-w -extldflags=-pie" -o $(BINARYARM7)
+	cd $(SRCDIR)/fzf && cp $(BINARYARM7) $(RELEASEARM7) && tar -czf $(RELEASEARM7).tgz $(RELEASEARM7) && \
+	rm -f $(RELEASEARM7)
 
-test:
-	go get
-	go test -v ./...
+test: deps
+	SHELL=/bin/sh go test -v ./...
 
 install: $(BINDIR)/fzf
 
 uninstall:
-	rm -f $(BINDIR)/fzf $(BINDIR)/$(BINARY64)
+	rm -f $(BINDIR)/fzf $(BINDIR)/$(BINARY)
 
 clean:
-	cd fzf && rm -f $(BINARY32) $(BINARY64) $(RELEASE32).tgz $(RELEASE64).tgz
+	cd fzf && rm -f fzf-*
 
-fzf/$(BINARY32): $(SOURCES)
-	cd fzf && GOARCH=386 CGO_ENABLED=1 go build -o $(BINARY32)
+fzf/$(BINARY32): deps
+	cd fzf && GOARCH=386 CGO_ENABLED=1 go build -a -ldflags -w -tags "$(TAGS)" -o $(BINARY32)
 
-fzf/$(BINARY64): $(SOURCES)
-	cd fzf && go build -o $(BINARY64)
+fzf/$(BINARY64): deps
+	cd fzf && go build -a -ldflags -w -tags "$(TAGS)" -o $(BINARY64)
 
-$(BINDIR)/fzf: fzf/$(BINARY64) | $(BINDIR)
-	cp -f fzf/$(BINARY64) $(BINDIR)
-	cd $(BINDIR) && ln -sf $(BINARY64) fzf
+$(BINDIR)/fzf: fzf/$(BINARY) | $(BINDIR)
+	cp -f fzf/$(BINARY) $(BINDIR)
+	cd $(BINDIR) && ln -sf $(BINARY) fzf
 
 $(BINDIR):
 	mkdir -p $@
 
-# Linux distribution to build fzf on
-DISTRO := arch
+docker-arch:
+	docker build -t junegunn/arch-sandbox - < Dockerfile.arch
 
-docker:
-	docker build -t junegunn/$(DISTRO)-sandbox - < Dockerfile.$(DISTRO)
+docker-ubuntu:
+	docker build -t junegunn/ubuntu-sandbox - < Dockerfile.ubuntu
 
-linux: docker
-	docker run -i -t -v $(GOPATH):/go junegunn/$(DISTRO)-sandbox \
-		/bin/bash -ci 'cd /go/src/github.com/junegunn/fzf/src; make'
+docker-centos:
+	docker build -t junegunn/centos-sandbox - < Dockerfile.centos
 
-$(DISTRO): docker
-	docker run -i -t -v $(GOPATH):/go junegunn/$(DISTRO)-sandbox \
-		sh -c 'cd /go/src/github.com/junegunn/fzf/src; /bin/bash'
+docker-android:
+	docker build -t junegunn/android-sandbox - < Dockerfile.android
 
-.PHONY: all build release test install uninstall clean docker linux $(DISTRO)
+arch: docker-arch
+	docker run $(DOCKEROPTS) junegunn/$@-sandbox \
+		sh -c 'cd /fzf/src; /bin/bash'
+
+ubuntu: docker-ubuntu
+	docker run $(DOCKEROPTS) junegunn/$@-sandbox \
+		sh -c 'cd /fzf/src; /bin/bash'
+
+centos: docker-centos
+	docker run $(DOCKEROPTS) junegunn/$@-sandbox \
+		sh -c 'cd /fzf/src; /bin/bash'
+
+linux: docker-centos
+	docker run $(DOCKEROPTS) junegunn/centos-sandbox \
+		/bin/bash -ci 'cd /fzf/src; make TAGS=static release'
+
+ubuntu-android: docker-android
+	docker run $(DOCKEROPTS) junegunn/android-sandbox \
+		sh -c 'cd /fzf/src; /bin/bash'
+
+android: docker-android
+	docker run $(DOCKEROPTS) junegunn/android-sandbox \
+		/bin/bash -ci 'cd /fzf/src; GOOS=android make android-build'
+
+.PHONY: all deps release test install uninstall clean \
+	linux arch ubuntu centos docker-arch docker-ubuntu docker-centos \
+	android-build docker-android ubuntu-android android

src/README.md

@@ -47,39 +47,12 @@ proportional to the number of CPU cores. On my MacBook Pro (Mid 2012), the new
 version was shown to be an order of magnitude faster on certain cases. It also
 starts much faster though the difference may not be noticeable.
 
-Differences with Ruby version
------------------------------
-
-The Go version is designed to be perfectly compatible with the previous Ruby
-version. The only behavioral difference is that the new version ignores the
-numeric argument to `--sort=N` option and always sorts the result regardless
-of the number of matches. The value was introduced to limit the response time
-of the query, but the Go version is blazingly fast (almost instant response
-even for 1M+ items) so I decided that it's no longer required.
-
-System requirements
--------------------
-
-Currently, prebuilt binaries are provided only for OS X and Linux. The install
-script will fall back to the legacy Ruby version on the other systems, but if
-you have Go 1.4 installed, you can try building it yourself.
-
-However, as pointed out in [golang.org/doc/install][req], the Go version may
-not run on CentOS/RHEL 5.x, and if that's the case, the install script will
-choose the Ruby version instead.
-
-The Go version depends on [ncurses][ncurses] and some Unix system calls, so it
-shouldn't run natively on Windows at the moment. But it won't be impossible to
-support Windows by falling back to a cross-platform alternative such as
-[termbox][termbox] only on Windows. If you're interested in making fzf work on
-Windows, please let me know.
-
 Build
 -----
 
 ```sh
 # Build fzf executables and tarballs
-make
+make release
 
 # Install the executable to ../bin directory
 make install
@@ -88,16 +61,22 @@ make install
 make linux
 ```
 
-Contribution
-------------
+Test
+----
 
-For the time being, I will not add or accept any new features until we can be
-sure that the implementation is stable and we have a sufficient number of test
-cases. However, fixes for obvious bugs and new test cases are welcome.
+Unit tests can be run with `make test`. Integration tests are written in Ruby
+script that should be run on tmux.
 
-I also care much about the performance of the implementation, so please make
-sure that your change does not result in performance regression. And please be
-noted that we don't have a quantitative measure of the performance yet.
+```sh
+# Unit tests
+make test
+
+# Install the executable to ../bin directory
+make install
+
+# Integration tests
+ruby ../test/test_go.rb
+```
 
 Third-party libraries used
 --------------------------

src/algo/algo.go

@@ -1,39 +1,507 @@
 package algo
 
+/*
+
+Algorithm
+---------
+
+FuzzyMatchV1 finds the first "fuzzy" occurrence of the pattern within the given
+text in O(n) time where n is the length of the text. Once the position of the
+last character is located, it traverses backwards to see if there's a shorter
+substring that matches the pattern.
+
+    a_____b___abc__  To find "abc"
+    *-----*-----*>   1. Forward scan
+             <***    2. Backward scan
+
+The algorithm is simple and fast, but as it only sees the first occurrence,
+it is not guaranteed to find the occurrence with the highest score.
+
+    a_____b__c__abc
+    *-----*--*  ***
+
+FuzzyMatchV2 implements a modified version of Smith-Waterman algorithm to find
+the optimal solution (highest score) according to the scoring criteria. Unlike
+the original algorithm, omission or mismatch of a character in the pattern is
+not allowed.
+
+Performance
+-----------
+
+The new V2 algorithm is slower than V1 as it examines all occurrences of the
+pattern instead of stopping immediately after finding the first one. The time
+complexity of the algorithm is O(nm) if a match is found and O(n) otherwise
+where n is the length of the item and m is the length of the pattern. Thus, the
+performance overhead may not be noticeable for a query with high selectivity.
+However, if the performance is more important than the quality of the result,
+you can still choose v1 algorithm with --algo=v1.
+
+Scoring criteria
+----------------
+
+- We prefer matches at special positions, such as the start of a word, or
+  uppercase character in camelCase words.
+
+- That is, we prefer an occurrence of the pattern with more characters
+  matching at special positions, even if the total match length is longer.
+    e.g. "fuzzyfinder" vs. "fuzzy-finder" on "ff"
+                            ````````````
+- Also, if the first character in the pattern appears at one of the special
+  positions, the bonus point for the position is multiplied by a constant
+  as it is extremely likely that the first character in the typed pattern
+  has more significance than the rest.
+    e.g. "fo-bar" vs. "foob-r" on "br"
+          ``````
+- But since fzf is still a fuzzy finder, not an acronym finder, we should also
+  consider the total length of the matched substring. This is why we have the
+  gap penalty. The gap penalty increases as the length of the gap (distance
+  between the matching characters) increases, so the effect of the bonus is
+  eventually cancelled at some point.
+    e.g. "fuzzyfinder" vs. "fuzzy-blurry-finder" on "ff"
+          ```````````
+- Consequently, it is crucial to find the right balance between the bonus
+  and the gap penalty. The parameters were chosen that the bonus is cancelled
+  when the gap size increases beyond 8 characters.
+
+- The bonus mechanism can have the undesirable side effect where consecutive
+  matches are ranked lower than the ones with gaps.
+    e.g. "foobar" vs. "foo-bar" on "foob"
+                       ```````
+- To correct this anomaly, we also give extra bonus point to each character
+  in a consecutive matching chunk.
+    e.g. "foobar" vs. "foo-bar" on "foob"
+          ``````
+- The amount of consecutive bonus is primarily determined by the bonus of the
+  first character in the chunk.
+    e.g. "foobar" vs. "out-of-bound" on "oob"
+                       ````````````
+*/
+
 import (
+	"fmt"
+	"strings"
 	"unicode"
 
 	"github.com/junegunn/fzf/src/util"
 )
 
-/*
- * String matching algorithms here do not use strings.ToLower to avoid
- * performance penalty. And they assume pattern runes are given in lowercase
- * letters when caseSensitive is false.
- *
- * In short: They try to do as little work as possible.
- */
+var DEBUG bool
 
-// FuzzyMatch performs fuzzy-match
-func FuzzyMatch(caseSensitive bool, runes *[]rune, pattern []rune) (int, int) {
-	if len(pattern) == 0 {
-		return 0, 0
+func indexAt(index int, max int, forward bool) int {
+	if forward {
+		return index
+	}
+	return max - index - 1
+}
+
+// Result contains the results of running a match function.
+type Result struct {
+	// TODO int32 should suffice
+	Start int
+	End   int
+	Score int
+}
+
+const (
+	scoreMatch        = 16
+	scoreGapStart     = -3
+	scoreGapExtention = -1
+
+	// We prefer matches at the beginning of a word, but the bonus should not be
+	// too great to prevent the longer acronym matches from always winning over
+	// shorter fuzzy matches. The bonus point here was specifically chosen that
+	// the bonus is cancelled when the gap between the acronyms grows over
+	// 8 characters, which is approximately the average length of the words found
+	// in web2 dictionary and my file system.
+	bonusBoundary = scoreMatch / 2
+
+	// Although bonus point for non-word characters is non-contextual, we need it
+	// for computing bonus points for consecutive chunks starting with a non-word
+	// character.
+	bonusNonWord = scoreMatch / 2
+
+	// Edge-triggered bonus for matches in camelCase words.
+	// Compared to word-boundary case, they don't accompany single-character gaps
+	// (e.g. FooBar vs. foo-bar), so we deduct bonus point accordingly.
+	bonusCamel123 = bonusBoundary + scoreGapExtention
+
+	// Minimum bonus point given to characters in consecutive chunks.
+	// Note that bonus points for consecutive matches shouldn't have needed if we
+	// used fixed match score as in the original algorithm.
+	bonusConsecutive = -(scoreGapStart + scoreGapExtention)
+
+	// The first character in the typed pattern usually has more significance
+	// than the rest so it's important that it appears at special positions where
+	// bonus points are given. e.g. "to-go" vs. "ongoing" on "og" or on "ogo".
+	// The amount of the extra bonus should be limited so that the gap penalty is
+	// still respected.
+	bonusFirstCharMultiplier = 2
+)
+
+type charClass int
+
+const (
+	charNonWord charClass = iota
+	charLower
+	charUpper
+	charLetter
+	charNumber
+)
+
+func posArray(withPos bool, len int) *[]int {
+	if withPos {
+		pos := make([]int, 0, len)
+		return &pos
+	}
+	return nil
+}
+
+func alloc16(offset int, slab *util.Slab, size int, clear bool) (int, []int16) {
+	if slab != nil && cap(slab.I16) > offset+size {
+		slice := slab.I16[offset : offset+size]
+		if clear {
+			for idx := range slice {
+				slice[idx] = 0
+			}
+		}
+		return offset + size, slice
+	}
+	return offset, make([]int16, size)
+}
+
+func alloc32(offset int, slab *util.Slab, size int, clear bool) (int, []int32) {
+	if slab != nil && cap(slab.I32) > offset+size {
+		slice := slab.I32[offset : offset+size]
+		if clear {
+			for idx := range slice {
+				slice[idx] = 0
+			}
+		}
+		return offset + size, slice
+	}
+	return offset, make([]int32, size)
+}
+
+func charClassOfAscii(char rune) charClass {
+	if char >= 'a' && char <= 'z' {
+		return charLower
+	} else if char >= 'A' && char <= 'Z' {
+		return charUpper
+	} else if char >= '0' && char <= '9' {
+		return charNumber
+	}
+	return charNonWord
+}
+
+func charClassOfNonAscii(char rune) charClass {
+	if unicode.IsLower(char) {
+		return charLower
+	} else if unicode.IsUpper(char) {
+		return charUpper
+	} else if unicode.IsNumber(char) {
+		return charNumber
+	} else if unicode.IsLetter(char) {
+		return charLetter
+	}
+	return charNonWord
+}
+
+func charClassOf(char rune) charClass {
+	if char <= unicode.MaxASCII {
+		return charClassOfAscii(char)
+	}
+	return charClassOfNonAscii(char)
+}
+
+func bonusFor(prevClass charClass, class charClass) int16 {
+	if prevClass == charNonWord && class != charNonWord {
+		// Word boundary
+		return bonusBoundary
+	} else if prevClass == charLower && class == charUpper ||
+		prevClass != charNumber && class == charNumber {
+		// camelCase letter123
+		return bonusCamel123
+	} else if class == charNonWord {
+		return bonusNonWord
+	}
+	return 0
+}
+
+func bonusAt(input util.Chars, idx int) int16 {
+	if idx == 0 {
+		return bonusBoundary
+	}
+	return bonusFor(charClassOf(input.Get(idx-1)), charClassOf(input.Get(idx)))
+}
+
+type Algo func(caseSensitive bool, forward bool, input util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int)
+
+func FuzzyMatchV2(caseSensitive bool, forward bool, input util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	// Assume that pattern is given in lowercase if case-insensitive.
+	// First check if there's a match and calculate bonus for each position.
+	// If the input string is too long, consider finding the matching chars in
+	// this phase as well (non-optimal alignment).
+	N := input.Length()
+	M := len(pattern)
+	switch M {
+	case 0:
+		return Result{0, 0, 0}, posArray(withPos, M)
+	case 1:
+		return ExactMatchNaive(caseSensitive, forward, input, pattern[0:1], withPos, slab)
+	}
+
+	// Since O(nm) algorithm can be prohibitively expensive for large input,
+	// we fall back to the greedy algorithm.
+	if slab != nil && N*M > cap(slab.I16) {
+		return FuzzyMatchV1(caseSensitive, forward, input, pattern, withPos, slab)
+	}
+
+	// Reuse pre-allocated integer slice to avoid unnecessary sweeping of garbages
+	offset16 := 0
+	offset32 := 0
+	// Bonus point for each position
+	offset16, B := alloc16(offset16, slab, N, false)
+	// The first occurrence of each character in the pattern
+	offset32, F := alloc32(offset32, slab, M, false)
+	// Rune array
+	offset32, T := alloc32(offset32, slab, N, false)
+
+	// Phase 1. Check if there's a match and calculate bonus for each point
+	pidx, lastIdx, prevClass := 0, 0, charNonWord
+	for idx := 0; idx < N; idx++ {
+		char := input.Get(idx)
+		var class charClass
+		if char <= unicode.MaxASCII {
+			class = charClassOfAscii(char)
+		} else {
+			class = charClassOfNonAscii(char)
+		}
+
+		if !caseSensitive && class == charUpper {
+			if char <= unicode.MaxASCII {
+				char += 32
+			} else {
+				char = unicode.To(unicode.LowerCase, char)
+			}
+		}
+
+		T[idx] = char
+		B[idx] = bonusFor(prevClass, class)
+		prevClass = class
+
+		if pidx < M {
+			if char == pattern[pidx] {
+				lastIdx = idx
+				F[pidx] = int32(idx)
+				pidx++
+			}
+		} else {
+			if char == pattern[M-1] {
+				lastIdx = idx
+			}
+		}
+	}
+	if pidx != M {
+		return Result{-1, -1, 0}, nil
+	}
+
+	// Phase 2. Fill in score matrix (H)
+	// Unlike the original algorithm, we do not allow omission.
+	width := lastIdx - int(F[0]) + 1
+	offset16, H := alloc16(offset16, slab, width*M, false)
+
+	// Possible length of consecutive chunk at each position.
+	offset16, C := alloc16(offset16, slab, width*M, false)
+
+	maxScore, maxScorePos := int16(0), 0
+	for i := 0; i < M; i++ {
+		I := i * width
+		inGap := false
+		for j := int(F[i]); j <= lastIdx; j++ {
+			j0 := j - int(F[0])
+			var s1, s2, consecutive int16
+
+			if j > int(F[i]) {
+				if inGap {
+					s2 = H[I+j0-1] + scoreGapExtention
+				} else {
+					s2 = H[I+j0-1] + scoreGapStart
+				}
+			}
+
+			if pattern[i] == T[j] {
+				var diag int16
+				if i > 0 && j0 > 0 {
+					diag = H[I-width+j0-1]
+				}
+				s1 = diag + scoreMatch
+				b := B[j]
+				if i > 0 {
+					// j > 0 if i > 0
+					consecutive = C[I-width+j0-1] + 1
+					// Break consecutive chunk
+					if b == bonusBoundary {
+						consecutive = 1
+					} else if consecutive > 1 {
+						b = util.Max16(b, util.Max16(bonusConsecutive, B[j-int(consecutive)+1]))
+					}
+				} else {
+					consecutive = 1
+					b *= bonusFirstCharMultiplier
+				}
+				if s1+b < s2 {
+					s1 += B[j]
+					consecutive = 0
+				} else {
+					s1 += b
+				}
+			}
+			C[I+j0] = consecutive
+
+			inGap = s1 < s2
+			score := util.Max16(util.Max16(s1, s2), 0)
+			if i == M-1 && (forward && score > maxScore || !forward && score >= maxScore) {
+				maxScore, maxScorePos = score, j
+			}
+			H[I+j0] = score
+		}
+
+		if DEBUG {
+			if i == 0 {
+				fmt.Print("  ")
+				for j := int(F[i]); j <= lastIdx; j++ {
+					fmt.Printf(" " + string(input.Get(j)) + " ")
+				}
+				fmt.Println()
+			}
+			fmt.Print(string(pattern[i]) + " ")
+			for idx := int(F[0]); idx < int(F[i]); idx++ {
+				fmt.Print(" 0 ")
+			}
+			for idx := int(F[i]); idx <= lastIdx; idx++ {
+				fmt.Printf("%2d ", H[i*width+idx-int(F[0])])
+			}
+			fmt.Println()
+
+			fmt.Print("  ")
+			for idx, p := range C[I : I+width] {
+				if idx+int(F[0]) < int(F[i]) {
+					p = 0
+				}
+				fmt.Printf("%2d ", p)
+			}
+			fmt.Println()
+		}
+	}
+
+	// Phase 3. (Optional) Backtrace to find character positions
+	pos := posArray(withPos, M)
+	j := int(F[0])
+	if withPos {
+		i := M - 1
+		j = maxScorePos
+		preferMatch := true
+		for {
+			I := i * width
+			j0 := j - int(F[0])
+			s := H[I+j0]
+
+			var s1, s2 int16
+			if i > 0 && j >= int(F[i]) {
+				s1 = H[I-width+j0-1]
+			}
+			if j > int(F[i]) {
+				s2 = H[I+j0-1]
+			}
+
+			if s > s1 && (s > s2 || s == s2 && preferMatch) {
+				*pos = append(*pos, j)
+				if i == 0 {
+					break
+				}
+				i--
+			}
+			preferMatch = C[I+j0] > 1 || I+width+j0+1 < len(C) && C[I+width+j0+1] > 0
+			j--
+		}
+	}
+	// Start offset we return here is only relevant when begin tiebreak is used.
+	// However finding the accurate offset requires backtracking, and we don't
+	// want to pay extra cost for the option that has lost its importance.
+	return Result{j, maxScorePos + 1, int(maxScore)}, pos
+}
+
+// Implement the same sorting criteria as V2
+func calculateScore(caseSensitive bool, text util.Chars, pattern []rune, sidx int, eidx int, withPos bool) (int, *[]int) {
+	pidx, score, inGap, consecutive, firstBonus := 0, 0, false, 0, int16(0)
+	pos := posArray(withPos, len(pattern))
+	prevClass := charNonWord
+	if sidx > 0 {
+		prevClass = charClassOf(text.Get(sidx - 1))
+	}
+	for idx := sidx; idx < eidx; idx++ {
+		char := text.Get(idx)
+		class := charClassOf(char)
+		if !caseSensitive {
+			if char >= 'A' && char <= 'Z' {
+				char += 32
+			} else if char > unicode.MaxASCII {
+				char = unicode.To(unicode.LowerCase, char)
+			}
+		}
+		if char == pattern[pidx] {
+			if withPos {
+				*pos = append(*pos, idx)
+			}
+			score += scoreMatch
+			bonus := bonusFor(prevClass, class)
+			if consecutive == 0 {
+				firstBonus = bonus
+			} else {
+				// Break consecutive chunk
+				if bonus == bonusBoundary {
+					firstBonus = bonus
+				}
+				bonus = util.Max16(util.Max16(bonus, firstBonus), bonusConsecutive)
+			}
+			if pidx == 0 {
+				score += int(bonus * bonusFirstCharMultiplier)
+			} else {
+				score += int(bonus)
+			}
+			inGap = false
+			consecutive++
+			pidx++
+		} else {
+			if inGap {
+				score += scoreGapExtention
+			} else {
+				score += scoreGapStart
+			}
+			inGap = true
+			consecutive = 0
+			firstBonus = 0
+		}
+		prevClass = class
+	}
+	return score, pos
+}
+
+// FuzzyMatchV1 performs fuzzy-match
+func FuzzyMatchV1(caseSensitive bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	if len(pattern) == 0 {
+		return Result{0, 0, 0}, nil
 	}
 
-	// 0. (FIXME) How to find the shortest match?
-	//    a_____b__c__abc
-	//    ^^^^^^^^^^  ^^^
-	// 1. forward scan (abc)
-	//   *-----*-----*>
-	//   a_____b___abc__
-	// 2. reverse scan (cba)
-	//   a_____b___abc__
-	//            <***
 	pidx := 0
 	sidx := -1
 	eidx := -1
 
-	for index, char := range *runes {
+	lenRunes := text.Length()
+	lenPattern := len(pattern)
+
+	for index := 0; index < lenRunes; index++ {
+		char := text.Get(indexAt(index, lenRunes, forward))
 		// This is considerably faster than blindly applying strings.ToLower to the
 		// whole string
 		if !caseSensitive {
@@ -46,11 +514,12 @@ func FuzzyMatch(caseSensitive bool, runes *[]rune, pattern []rune) (int, int) {
 				char = unicode.To(unicode.LowerCase, char)
 			}
 		}
-		if char == pattern[pidx] {
+		pchar := pattern[indexAt(pidx, lenPattern, forward)]
+		if char == pchar {
 			if sidx < 0 {
 				sidx = index
 			}
-			if pidx++; pidx == len(pattern) {
+			if pidx++; pidx == lenPattern {
 				eidx = index + 1
 				break
 			}
@@ -60,7 +529,8 @@ func FuzzyMatch(caseSensitive bool, runes *[]rune, pattern []rune) (int, int) {
 	if sidx >= 0 && eidx >= 0 {
 		pidx--
 		for index := eidx - 1; index >= sidx; index-- {
-			char := (*runes)[index]
+			tidx := indexAt(index, lenRunes, forward)
+			char := text.Get(tidx)
 			if !caseSensitive {
 				if char >= 'A' && char <= 'Z' {
 					char += 32
@@ -68,16 +538,25 @@ func FuzzyMatch(caseSensitive bool, runes *[]rune, pattern []rune) (int, int) {
 					char = unicode.To(unicode.LowerCase, char)
 				}
 			}
-			if char == pattern[pidx] {
+
+			pidx_ := indexAt(pidx, lenPattern, forward)
+			pchar := pattern[pidx_]
+			if char == pchar {
 				if pidx--; pidx < 0 {
 					sidx = index
 					break
 				}
 			}
 		}
-		return sidx, eidx
+
+		if !forward {
+			sidx, eidx = lenRunes-eidx, lenRunes-sidx
+		}
+
+		score, pos := calculateScore(caseSensitive, text, pattern, sidx, eidx, withPos)
+		return Result{sidx, eidx, score}, pos
 	}
-	return -1, -1
+	return Result{-1, -1, 0}, nil
 }
 
 // ExactMatchNaive is a basic string searching algorithm that handles case
@@ -85,22 +564,28 @@ func FuzzyMatch(caseSensitive bool, runes *[]rune, pattern []rune) (int, int) {
 // of strings.ToLower + strings.Index for typical fzf use cases where input
 // strings and patterns are not very long.
 //
-// We might try to implement better algorithms in the future:
-// http://en.wikipedia.org/wiki/String_searching_algorithm
-func ExactMatchNaive(caseSensitive bool, runes *[]rune, pattern []rune) (int, int) {
+// Since 0.15.0, this function searches for the match with the highest
+// bonus point, instead of stopping immediately after finding the first match.
+// The solution is much cheaper since there is only one possible alignment of
+// the pattern.
+func ExactMatchNaive(caseSensitive bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
 	if len(pattern) == 0 {
-		return 0, 0
+		return Result{0, 0, 0}, nil
 	}
 
-	numRunes := len(*runes)
-	plen := len(pattern)
-	if numRunes < plen {
-		return -1, -1
+	lenRunes := text.Length()
+	lenPattern := len(pattern)
+
+	if lenRunes < lenPattern {
+		return Result{-1, -1, 0}, nil
 	}
 
+	// For simplicity, only look at the bonus at the first character position
 	pidx := 0
-	for index := 0; index < numRunes; index++ {
-		char := (*runes)[index]
+	bestPos, bonus, bestBonus := -1, int16(0), int16(-1)
+	for index := 0; index < lenRunes; index++ {
+		index_ := indexAt(index, lenRunes, forward)
+		char := text.Get(index_)
 		if !caseSensitive {
 			if char >= 'A' && char <= 'Z' {
 				char += 32
@@ -108,54 +593,108 @@ func ExactMatchNaive(caseSensitive bool, runes *[]rune, pattern []rune) (int, in
 				char = unicode.To(unicode.LowerCase, char)
 			}
 		}
-		if pattern[pidx] == char {
+		pidx_ := indexAt(pidx, lenPattern, forward)
+		pchar := pattern[pidx_]
+		if pchar == char {
+			if pidx_ == 0 {
+				bonus = bonusAt(text, index_)
+			}
 			pidx++
-			if pidx == plen {
-				return index - plen + 1, index + 1
+			if pidx == lenPattern {
+				if bonus > bestBonus {
+					bestPos, bestBonus = index, bonus
+				}
+				if bonus == bonusBoundary {
+					break
+				}
+				index -= pidx - 1
+				pidx, bonus = 0, 0
 			}
 		} else {
 			index -= pidx
-			pidx = 0
+			pidx, bonus = 0, 0
 		}
 	}
-	return -1, -1
+	if bestPos >= 0 {
+		var sidx, eidx int
+		if forward {
+			sidx = bestPos - lenPattern + 1
+			eidx = bestPos + 1
+		} else {
+			sidx = lenRunes - (bestPos + 1)
+			eidx = lenRunes - (bestPos - lenPattern + 1)
+		}
+		score, _ := calculateScore(caseSensitive, text, pattern, sidx, eidx, false)
+		return Result{sidx, eidx, score}, nil
+	}
+	return Result{-1, -1, 0}, nil
 }
 
 // PrefixMatch performs prefix-match
-func PrefixMatch(caseSensitive bool, runes *[]rune, pattern []rune) (int, int) {
-	if len(*runes) < len(pattern) {
-		return -1, -1
+func PrefixMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	if len(pattern) == 0 {
+		return Result{0, 0, 0}, nil
+	}
+
+	if text.Length() < len(pattern) {
+		return Result{-1, -1, 0}, nil
 	}
 
 	for index, r := range pattern {
-		char := (*runes)[index]
+		char := text.Get(index)
 		if !caseSensitive {
 			char = unicode.ToLower(char)
 		}
 		if char != r {
-			return -1, -1
+			return Result{-1, -1, 0}, nil
 		}
 	}
-	return 0, len(pattern)
+	lenPattern := len(pattern)
+	score, _ := calculateScore(caseSensitive, text, pattern, 0, lenPattern, false)
+	return Result{0, lenPattern, score}, nil
 }
 
 // SuffixMatch performs suffix-match
-func SuffixMatch(caseSensitive bool, input *[]rune, pattern []rune) (int, int) {
-	runes := util.TrimRight(input)
-	trimmedLen := len(runes)
+func SuffixMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	lenRunes := text.Length()
+	trimmedLen := lenRunes - text.TrailingWhitespaces()
+	if len(pattern) == 0 {
+		return Result{trimmedLen, trimmedLen, 0}, nil
+	}
 	diff := trimmedLen - len(pattern)
 	if diff < 0 {
-		return -1, -1
+		return Result{-1, -1, 0}, nil
 	}
 
 	for index, r := range pattern {
-		char := runes[index+diff]
+		char := text.Get(index + diff)
 		if !caseSensitive {
 			char = unicode.ToLower(char)
 		}
 		if char != r {
-			return -1, -1
+			return Result{-1, -1, 0}, nil
 		}
 	}
-	return trimmedLen - len(pattern), trimmedLen
+	lenPattern := len(pattern)
+	sidx := trimmedLen - lenPattern
+	eidx := trimmedLen
+	score, _ := calculateScore(caseSensitive, text, pattern, sidx, eidx, false)
+	return Result{sidx, eidx, score}, nil
+}
+
+// EqualMatch performs equal-match
+func EqualMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	lenPattern := len(pattern)
+	if text.Length() != lenPattern {
+		return Result{-1, -1, 0}, nil
+	}
+	runesStr := text.ToString()
+	if !caseSensitive {
+		runesStr = strings.ToLower(runesStr)
+	}
+	if runesStr == string(pattern) {
+		return Result{0, lenPattern, (scoreMatch+bonusBoundary)*lenPattern +
+			(bonusFirstCharMultiplier-1)*bonusBoundary}, nil
+	}
+	return Result{-1, -1, 0}, nil
 }

src/algo/algo_test.go

@@ -1,52 +1,166 @@
 package algo
 
 import (
+	"math"
+	"sort"
 	"strings"
 	"testing"
+
+	"github.com/junegunn/fzf/src/util"
 )
 
-func assertMatch(t *testing.T, fun func(bool, *[]rune, []rune) (int, int), caseSensitive bool, input string, pattern string, sidx int, eidx int) {
+func assertMatch(t *testing.T, fun Algo, caseSensitive, forward bool, input, pattern string, sidx int, eidx int, score int) {
 	if !caseSensitive {
 		pattern = strings.ToLower(pattern)
 	}
-	runes := []rune(input)
-	s, e := fun(caseSensitive, &runes, []rune(pattern))
-	if s != sidx {
-		t.Errorf("Invalid start index: %d (expected: %d, %s / %s)", s, sidx, input, pattern)
+	res, pos := fun(caseSensitive, forward, util.RunesToChars([]rune(input)), []rune(pattern), true, nil)
+	var start, end int
+	if pos == nil || len(*pos) == 0 {
+		start = res.Start
+		end = res.End
+	} else {
+		sort.Ints(*pos)
+		start = (*pos)[0]
+		end = (*pos)[len(*pos)-1] + 1
 	}
-	if e != eidx {
-		t.Errorf("Invalid end index: %d (expected: %d, %s / %s)", e, eidx, input, pattern)
+	if start != sidx {
+		t.Errorf("Invalid start index: %d (expected: %d, %s / %s)", start, sidx, input, pattern)
+	}
+	if end != eidx {
+		t.Errorf("Invalid end index: %d (expected: %d, %s / %s)", end, eidx, input, pattern)
+	}
+	if res.Score != score {
+		t.Errorf("Invalid score: %d (expected: %d, %s / %s)", res.Score, score, input, pattern)
 	}
 }
 
 func TestFuzzyMatch(t *testing.T) {
-	assertMatch(t, FuzzyMatch, false, "fooBarbaz", "oBZ", 2, 9)
-	assertMatch(t, FuzzyMatch, true, "fooBarbaz", "oBZ", -1, -1)
-	assertMatch(t, FuzzyMatch, true, "fooBarbaz", "oBz", 2, 9)
-	assertMatch(t, FuzzyMatch, true, "fooBarbaz", "fooBarbazz", -1, -1)
+	for _, fn := range []Algo{FuzzyMatchV1, FuzzyMatchV2} {
+		for _, forward := range []bool{true, false} {
+			assertMatch(t, fn, false, forward, "fooBarbaz1", "oBZ", 2, 9,
+				scoreMatch*3+bonusCamel123+scoreGapStart+scoreGapExtention*3)
+			assertMatch(t, fn, false, forward, "foo bar baz", "fbb", 0, 9,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+
+					bonusBoundary*2+2*scoreGapStart+4*scoreGapExtention)
+			assertMatch(t, fn, false, forward, "/AutomatorDocument.icns", "rdoc", 9, 13,
+				scoreMatch*4+bonusCamel123+bonusConsecutive*2)
+			assertMatch(t, fn, false, forward, "/man1/zshcompctl.1", "zshc", 6, 10,
+				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*3)
+			assertMatch(t, fn, false, forward, "/.oh-my-zsh/cache", "zshc", 8, 13,
+				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*3+scoreGapStart)
+			assertMatch(t, fn, false, forward, "ab0123 456", "12356", 3, 10,
+				scoreMatch*5+bonusConsecutive*3+scoreGapStart+scoreGapExtention)
+			assertMatch(t, fn, false, forward, "abc123 456", "12356", 3, 10,
+				scoreMatch*5+bonusCamel123*bonusFirstCharMultiplier+bonusCamel123*2+bonusConsecutive+scoreGapStart+scoreGapExtention)
+			assertMatch(t, fn, false, forward, "foo/bar/baz", "fbb", 0, 9,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+
+					bonusBoundary*2+2*scoreGapStart+4*scoreGapExtention)
+			assertMatch(t, fn, false, forward, "fooBarBaz", "fbb", 0, 7,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+
+					bonusCamel123*2+2*scoreGapStart+2*scoreGapExtention)
+			assertMatch(t, fn, false, forward, "foo barbaz", "fbb", 0, 8,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary+
+					scoreGapStart*2+scoreGapExtention*3)
+			assertMatch(t, fn, false, forward, "fooBar Baz", "foob", 0, 4,
+				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*3)
+			assertMatch(t, fn, false, forward, "xFoo-Bar Baz", "foo-b", 1, 6,
+				scoreMatch*5+bonusCamel123*bonusFirstCharMultiplier+bonusCamel123*2+
+					bonusNonWord+bonusBoundary)
+
+			assertMatch(t, fn, true, forward, "fooBarbaz", "oBz", 2, 9,
+				scoreMatch*3+bonusCamel123+scoreGapStart+scoreGapExtention*3)
+			assertMatch(t, fn, true, forward, "Foo/Bar/Baz", "FBB", 0, 9,
+				scoreMatch*3+bonusBoundary*(bonusFirstCharMultiplier+2)+
+					scoreGapStart*2+scoreGapExtention*4)
+			assertMatch(t, fn, true, forward, "FooBarBaz", "FBB", 0, 7,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+bonusCamel123*2+
+					scoreGapStart*2+scoreGapExtention*2)
+			assertMatch(t, fn, true, forward, "FooBar Baz", "FooB", 0, 4,
+				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*2+
+					util.Max(bonusCamel123, bonusBoundary))
+
+			// Consecutive bonus updated
+			assertMatch(t, fn, true, forward, "foo-bar", "o-ba", 2, 6,
+				scoreMatch*4+bonusBoundary*3)
+
+			// Non-match
+			assertMatch(t, fn, true, forward, "fooBarbaz", "oBZ", -1, -1, 0)
+			assertMatch(t, fn, true, forward, "Foo Bar Baz", "fbb", -1, -1, 0)
+			assertMatch(t, fn, true, forward, "fooBarbaz", "fooBarbazz", -1, -1, 0)
+		}
+	}
+}
+
+func TestFuzzyMatchBackward(t *testing.T) {
+	assertMatch(t, FuzzyMatchV1, false, true, "foobar fb", "fb", 0, 4,
+		scoreMatch*2+bonusBoundary*bonusFirstCharMultiplier+
+			scoreGapStart+scoreGapExtention)
+	assertMatch(t, FuzzyMatchV1, false, false, "foobar fb", "fb", 7, 9,
+		scoreMatch*2+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary)
 }
 
 func TestExactMatchNaive(t *testing.T) {
-	assertMatch(t, ExactMatchNaive, false, "fooBarbaz", "oBA", 2, 5)
-	assertMatch(t, ExactMatchNaive, true, "fooBarbaz", "oBA", -1, -1)
-	assertMatch(t, ExactMatchNaive, true, "fooBarbaz", "fooBarbazz", -1, -1)
+	for _, dir := range []bool{true, false} {
+		assertMatch(t, ExactMatchNaive, true, dir, "fooBarbaz", "oBA", -1, -1, 0)
+		assertMatch(t, ExactMatchNaive, true, dir, "fooBarbaz", "fooBarbazz", -1, -1, 0)
+
+		assertMatch(t, ExactMatchNaive, false, dir, "fooBarbaz", "oBA", 2, 5,
+			scoreMatch*3+bonusCamel123+bonusConsecutive)
+		assertMatch(t, ExactMatchNaive, false, dir, "/AutomatorDocument.icns", "rdoc", 9, 13,
+			scoreMatch*4+bonusCamel123+bonusConsecutive*2)
+		assertMatch(t, ExactMatchNaive, false, dir, "/man1/zshcompctl.1", "zshc", 6, 10,
+			scoreMatch*4+bonusBoundary*(bonusFirstCharMultiplier+3))
+		assertMatch(t, ExactMatchNaive, false, dir, "/.oh-my-zsh/cache", "zsh/c", 8, 13,
+			scoreMatch*5+bonusBoundary*(bonusFirstCharMultiplier+4))
+	}
+}
+
+func TestExactMatchNaiveBackward(t *testing.T) {
+	assertMatch(t, ExactMatchNaive, false, true, "foobar foob", "oo", 1, 3,
+		scoreMatch*2+bonusConsecutive)
+	assertMatch(t, ExactMatchNaive, false, false, "foobar foob", "oo", 8, 10,
+		scoreMatch*2+bonusConsecutive)
 }
 
 func TestPrefixMatch(t *testing.T) {
-	assertMatch(t, PrefixMatch, false, "fooBarbaz", "Foo", 0, 3)
-	assertMatch(t, PrefixMatch, true, "fooBarbaz", "Foo", -1, -1)
-	assertMatch(t, PrefixMatch, false, "fooBarbaz", "baz", -1, -1)
+	score := (scoreMatch+bonusBoundary)*3 + bonusBoundary*(bonusFirstCharMultiplier-1)
+
+	for _, dir := range []bool{true, false} {
+		assertMatch(t, PrefixMatch, true, dir, "fooBarbaz", "Foo", -1, -1, 0)
+		assertMatch(t, PrefixMatch, false, dir, "fooBarBaz", "baz", -1, -1, 0)
+		assertMatch(t, PrefixMatch, false, dir, "fooBarbaz", "Foo", 0, 3, score)
+		assertMatch(t, PrefixMatch, false, dir, "foOBarBaZ", "foo", 0, 3, score)
+		assertMatch(t, PrefixMatch, false, dir, "f-oBarbaz", "f-o", 0, 3, score)
+	}
 }
 
 func TestSuffixMatch(t *testing.T) {
-	assertMatch(t, SuffixMatch, false, "fooBarbaz", "Foo", -1, -1)
-	assertMatch(t, SuffixMatch, false, "fooBarbaz", "baz", 6, 9)
-	assertMatch(t, SuffixMatch, true, "fooBarbaz", "Baz", -1, -1)
+	for _, dir := range []bool{true, false} {
+		assertMatch(t, SuffixMatch, true, dir, "fooBarbaz", "Baz", -1, -1, 0)
+		assertMatch(t, SuffixMatch, false, dir, "fooBarbaz", "Foo", -1, -1, 0)
+
+		assertMatch(t, SuffixMatch, false, dir, "fooBarbaz", "baz", 6, 9,
+			scoreMatch*3+bonusConsecutive*2)
+		assertMatch(t, SuffixMatch, false, dir, "fooBarBaZ", "baz", 6, 9,
+			(scoreMatch+bonusCamel123)*3+bonusCamel123*(bonusFirstCharMultiplier-1))
+	}
 }
 
 func TestEmptyPattern(t *testing.T) {
-	assertMatch(t, FuzzyMatch, true, "foobar", "", 0, 0)
-	assertMatch(t, ExactMatchNaive, true, "foobar", "", 0, 0)
-	assertMatch(t, PrefixMatch, true, "foobar", "", 0, 0)
-	assertMatch(t, SuffixMatch, true, "foobar", "", 6, 6)
+	for _, dir := range []bool{true, false} {
+		assertMatch(t, FuzzyMatchV1, true, dir, "foobar", "", 0, 0, 0)
+		assertMatch(t, FuzzyMatchV2, true, dir, "foobar", "", 0, 0, 0)
+		assertMatch(t, ExactMatchNaive, true, dir, "foobar", "", 0, 0, 0)
+		assertMatch(t, PrefixMatch, true, dir, "foobar", "", 0, 0, 0)
+		assertMatch(t, SuffixMatch, true, dir, "foobar", "", 6, 6, 0)
+	}
+}
+
+func TestLongString(t *testing.T) {
+	bytes := make([]byte, math.MaxUint16*2)
+	for i := range bytes {
+		bytes[i] = 'x'
+	}
+	bytes[math.MaxUint16] = 'z'
+	assertMatch(t, FuzzyMatchV2, true, true, string(bytes), "zx", math.MaxUint16, math.MaxUint16+2, scoreMatch*2+bonusConsecutive)
 }

src/ansi.go

@@ -36,21 +36,27 @@ func init() {
 	ansiRegex = regexp.MustCompile("\x1b\\[[0-9;]*[mK]")
 }
 
-func extractColor(str *string) (*string, []ansiOffset) {
+func extractColor(str string, state *ansiState, proc func(string, *ansiState) bool) (string, *[]ansiOffset, *ansiState) {
 	var offsets []ansiOffset
-
 	var output bytes.Buffer
-	var state *ansiState
+
+	if state != nil {
+		offsets = append(offsets, ansiOffset{[2]int32{0, 0}, *state})
+	}
 
 	idx := 0
-	for _, offset := range ansiRegex.FindAllStringIndex(*str, -1) {
-		output.WriteString((*str)[idx:offset[0]])
-		newState := interpretCode((*str)[offset[0]:offset[1]], state)
+	for _, offset := range ansiRegex.FindAllStringIndex(str, -1) {
+		prev := str[idx:offset[0]]
+		output.WriteString(prev)
+		if proc != nil && !proc(prev, state) {
+			return "", nil, nil
+		}
+		newState := interpretCode(str[offset[0]:offset[1]], state)
 
 		if !newState.equals(state) {
 			if state != nil {
 				// Update last offset
-				(&offsets[len(offsets)-1]).offset[1] = int32(output.Len())
+				(&offsets[len(offsets)-1]).offset[1] = int32(utf8.RuneCount(output.Bytes()))
 			}
 
 			if newState.colored() {
@@ -67,7 +73,7 @@ func extractColor(str *string) (*string, []ansiOffset) {
 		idx = offset[1]
 	}
 
-	rest := (*str)[idx:]
+	rest := str[idx:]
 	if len(rest) > 0 {
 		output.WriteString(rest)
 		if state != nil {
@@ -75,8 +81,13 @@ func extractColor(str *string) (*string, []ansiOffset) {
 			(&offsets[len(offsets)-1]).offset[1] = int32(utf8.RuneCount(output.Bytes()))
 		}
 	}
-	outputStr := output.String()
-	return &outputStr, offsets
+	if proc != nil {
+		proc(rest, state)
+	}
+	if len(offsets) == 0 {
+		return output.String(), nil, state
+	}
+	return output.String(), &offsets, state
 }
 
 func interpretCode(ansiCode string, prevState *ansiState) *ansiState {

src/ansi_test.go

@@ -14,94 +14,139 @@ func TestExtractColor(t *testing.T) {
 	}
 
 	src := "hello world"
+	var state *ansiState
 	clean := "\x1b[0m"
-	check := func(assertion func(ansiOffsets []ansiOffset)) {
-		output, ansiOffsets := extractColor(&src)
-		if *output != "hello world" {
+	check := func(assertion func(ansiOffsets *[]ansiOffset, state *ansiState)) {
+		output, ansiOffsets, newState := extractColor(src, state, nil)
+		state = newState
+		if output != "hello world" {
 			t.Errorf("Invalid output: {}", output)
 		}
 		fmt.Println(src, ansiOffsets, clean)
-		assertion(ansiOffsets)
+		assertion(ansiOffsets, state)
 	}
 
-	check(func(offsets []ansiOffset) {
-		if len(offsets) > 0 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if offsets != nil {
 			t.Fail()
 		}
 	})
 
+	state = nil
 	src = "\x1b[0mhello world"
-	check(func(offsets []ansiOffset) {
-		if len(offsets) > 0 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if offsets != nil {
 			t.Fail()
 		}
 	})
 
+	state = nil
 	src = "\x1b[1mhello world"
-	check(func(offsets []ansiOffset) {
-		if len(offsets) != 1 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 1 {
 			t.Fail()
 		}
-		assert(offsets[0], 0, 11, -1, -1, true)
+		assert((*offsets)[0], 0, 11, -1, -1, true)
 	})
 
+	state = nil
 	src = "\x1b[1mhello \x1b[mworld"
-	check(func(offsets []ansiOffset) {
-		if len(offsets) != 1 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 1 {
 			t.Fail()
 		}
-		assert(offsets[0], 0, 6, -1, -1, true)
+		assert((*offsets)[0], 0, 6, -1, -1, true)
 	})
 
+	state = nil
 	src = "\x1b[1mhello \x1b[Kworld"
-	check(func(offsets []ansiOffset) {
-		if len(offsets) != 1 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 1 {
 			t.Fail()
 		}
-		assert(offsets[0], 0, 11, -1, -1, true)
+		assert((*offsets)[0], 0, 11, -1, -1, true)
 	})
 
+	state = nil
 	src = "hello \x1b[34;45;1mworld"
-	check(func(offsets []ansiOffset) {
-		if len(offsets) != 1 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 1 {
 			t.Fail()
 		}
-		assert(offsets[0], 6, 11, 4, 5, true)
+		assert((*offsets)[0], 6, 11, 4, 5, true)
 	})
 
+	state = nil
 	src = "hello \x1b[34;45;1mwor\x1b[34;45;1mld"
-	check(func(offsets []ansiOffset) {
-		if len(offsets) != 1 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 1 {
 			t.Fail()
 		}
-		assert(offsets[0], 6, 11, 4, 5, true)
+		assert((*offsets)[0], 6, 11, 4, 5, true)
 	})
 
+	state = nil
 	src = "hello \x1b[34;45;1mwor\x1b[0mld"
-	check(func(offsets []ansiOffset) {
-		if len(offsets) != 1 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 1 {
 			t.Fail()
 		}
-		assert(offsets[0], 6, 9, 4, 5, true)
+		assert((*offsets)[0], 6, 9, 4, 5, true)
 	})
 
+	state = nil
 	src = "hello \x1b[34;48;5;233;1mwo\x1b[38;5;161mr\x1b[0ml\x1b[38;5;161md"
-	check(func(offsets []ansiOffset) {
-		if len(offsets) != 3 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 3 {
 			t.Fail()
 		}
-		assert(offsets[0], 6, 8, 4, 233, true)
-		assert(offsets[1], 8, 9, 161, 233, true)
-		assert(offsets[2], 10, 11, 161, -1, false)
+		assert((*offsets)[0], 6, 8, 4, 233, true)
+		assert((*offsets)[1], 8, 9, 161, 233, true)
+		assert((*offsets)[2], 10, 11, 161, -1, false)
 	})
 
 	// {38,48};5;{38,48}
+	state = nil
 	src = "hello \x1b[38;5;38;48;5;48;1mwor\x1b[38;5;48;48;5;38ml\x1b[0md"
-	check(func(offsets []ansiOffset) {
-		if len(offsets) != 2 {
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 2 {
 			t.Fail()
 		}
-		assert(offsets[0], 6, 9, 38, 48, true)
-		assert(offsets[1], 9, 10, 48, 38, true)
+		assert((*offsets)[0], 6, 9, 38, 48, true)
+		assert((*offsets)[1], 9, 10, 48, 38, true)
+	})
+
+	src = "hello \x1b[32;1mworld"
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 1 {
+			t.Fail()
+		}
+		if state.fg != 2 || state.bg != -1 || !state.bold {
+			t.Fail()
+		}
+		assert((*offsets)[0], 6, 11, 2, -1, true)
+	})
+
+	src = "hello world"
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 1 {
+			t.Fail()
+		}
+		if state.fg != 2 || state.bg != -1 || !state.bold {
+			t.Fail()
+		}
+		assert((*offsets)[0], 0, 11, 2, -1, true)
+	})
+
+	src = "hello \x1b[0;38;5;200;48;5;100mworld"
+	check(func(offsets *[]ansiOffset, state *ansiState) {
+		if len(*offsets) != 2 {
+			t.Fail()
+		}
+		if state.fg != 200 || state.bg != 100 || state.bold {
+			t.Fail()
+		}
+		assert((*offsets)[0], 0, 6, 2, -1, true)
+		assert((*offsets)[1], 6, 11, 200, 100, false)
 	})
 }

src/cache.go

@@ -3,7 +3,7 @@ package fzf
 import "sync"
 
 // queryCache associates strings to lists of items
-type queryCache map[string][]*Item
+type queryCache map[string][]*Result
 
 // ChunkCache associates Chunk and query string to lists of items
 type ChunkCache struct {
@@ -17,7 +17,7 @@ func NewChunkCache() ChunkCache {
 }
 
 // Add adds the list to the cache
-func (cc *ChunkCache) Add(chunk *Chunk, key string, list []*Item) {
+func (cc *ChunkCache) Add(chunk *Chunk, key string, list []*Result) {
 	if len(key) == 0 || !chunk.IsFull() || len(list) > queryCacheMax {
 		return
 	}
@@ -34,7 +34,7 @@ func (cc *ChunkCache) Add(chunk *Chunk, key string, list []*Item) {
 }
 
 // Find is called to lookup ChunkCache
-func (cc *ChunkCache) Find(chunk *Chunk, key string) ([]*Item, bool) {
+func (cc *ChunkCache) Find(chunk *Chunk, key string) ([]*Result, bool) {
 	if len(key) == 0 || !chunk.IsFull() {
 		return nil, false
 	}

src/cache_test.go

@@ -7,8 +7,8 @@ func TestChunkCache(t *testing.T) {
 	chunk2 := make(Chunk, chunkSize)
 	chunk1p := &Chunk{}
 	chunk2p := &chunk2
-	items1 := []*Item{&Item{}}
-	items2 := []*Item{&Item{}, &Item{}}
+	items1 := []*Result{&Result{}}
+	items2 := []*Result{&Result{}, &Result{}}
 	cache.Add(chunk1p, "foo", items1)
 	cache.Add(chunk2p, "foo", items1)
 	cache.Add(chunk2p, "bar", items2)

src/chunklist.go

@@ -7,7 +7,7 @@ type Chunk []*Item // >>> []Item
 
 // ItemBuilder is a closure type that builds Item object from a pointer to a
 // string and an integer
-type ItemBuilder func(*string, int) *Item
+type ItemBuilder func([]byte, int) *Item
 
 // ChunkList is a list of Chunks
 type ChunkList struct {
@@ -26,8 +26,13 @@ func NewChunkList(trans ItemBuilder) *ChunkList {
 		trans:  trans}
 }
 
-func (c *Chunk) push(trans ItemBuilder, data *string, index int) {
-	*c = append(*c, trans(data, index))
+func (c *Chunk) push(trans ItemBuilder, data []byte, index int) bool {
+	item := trans(data, index)
+	if item != nil {
+		*c = append(*c, item)
+		return true
+	}
+	return false
 }
 
 // IsFull returns true if the Chunk is full
@@ -48,7 +53,7 @@ func CountItems(cs []*Chunk) int {
 }
 
 // Push adds the item to the list
-func (cl *ChunkList) Push(data string) {
+func (cl *ChunkList) Push(data []byte) bool {
 	cl.mutex.Lock()
 	defer cl.mutex.Unlock()
 
@@ -57,8 +62,11 @@ func (cl *ChunkList) Push(data string) {
 		cl.chunks = append(cl.chunks, &newChunk)
 	}
 
-	cl.lastChunk().push(cl.trans, &data, cl.count)
-	cl.count++
+	if cl.lastChunk().push(cl.trans, data, cl.count) {
+		cl.count++
+		return true
+	}
+	return false
 }
 
 // Snapshot returns immutable snapshot of the ChunkList

src/chunklist_test.go

@@ -3,11 +3,16 @@ package fzf
 import (
 	"fmt"
 	"testing"
+
+	"github.com/junegunn/fzf/src/util"
 )
 
 func TestChunkList(t *testing.T) {
-	cl := NewChunkList(func(s *string, i int) *Item {
-		return &Item{text: s, rank: Rank{0, 0, uint32(i * 2)}}
+	// FIXME global
+	sortCriteria = []criterion{byScore, byLength}
+
+	cl := NewChunkList(func(s []byte, i int) *Item {
+		return &Item{text: util.ToChars(s), index: int32(i * 2)}
 	})
 
 	// Snapshot
@@ -17,8 +22,8 @@ func TestChunkList(t *testing.T) {
 	}
 
 	// Add some data
-	cl.Push("hello")
-	cl.Push("world")
+	cl.Push([]byte("hello"))
+	cl.Push([]byte("world"))
 
 	// Previously created snapshot should remain the same
 	if len(snapshot) > 0 {
@@ -36,8 +41,8 @@ func TestChunkList(t *testing.T) {
 	if len(*chunk1) != 2 {
 		t.Error("Snapshot should contain only two items")
 	}
-	if *(*chunk1)[0].text != "hello" || (*chunk1)[0].rank.index != 0 ||
-		*(*chunk1)[1].text != "world" || (*chunk1)[1].rank.index != 2 {
+	if (*chunk1)[0].text.ToString() != "hello" || (*chunk1)[0].index != 0 ||
+		(*chunk1)[1].text.ToString() != "world" || (*chunk1)[1].index != 2 {
 		t.Error("Invalid data")
 	}
 	if chunk1.IsFull() {
@@ -46,7 +51,7 @@ func TestChunkList(t *testing.T) {
 
 	// Add more data
 	for i := 0; i < chunkSize*2; i++ {
-		cl.Push(fmt.Sprintf("item %d", i))
+		cl.Push([]byte(fmt.Sprintf("item %d", i)))
 	}
 
 	// Previous snapshot should remain the same
@@ -64,8 +69,8 @@ func TestChunkList(t *testing.T) {
 		t.Error("Unexpected number of items")
 	}
 
-	cl.Push("hello")
-	cl.Push("world")
+	cl.Push([]byte("hello"))
+	cl.Push([]byte("world"))
 
 	lastChunkCount := len(*snapshot[len(snapshot)-1])
 	if lastChunkCount != 2 {

src/constants.go

@@ -8,30 +8,45 @@ import (
 
 const (
 	// Current version
-	Version = "0.9.11"
+	version = "0.15.1"
 
 	// Core
 	coordinatorDelayMax  time.Duration = 100 * time.Millisecond
 	coordinatorDelayStep time.Duration = 10 * time.Millisecond
 
 	// Reader
-	defaultCommand = `find * -path '*/\.*' -prune -o -type f -print -o -type l -print 2> /dev/null`
+	defaultCommand   = `find . -path '*/\.*' -prune -o -type f -print -o -type l -print 2> /dev/null | sed s/^..//`
+	readerBufferSize = 64 * 1024
 
 	// Terminal
-	initialDelay    = 100 * time.Millisecond
-	spinnerDuration = 200 * time.Millisecond
+	initialDelay     = 20 * time.Millisecond
+	initialDelayTac  = 100 * time.Millisecond
+	spinnerDuration  = 200 * time.Millisecond
+	maxPatternLength = 100
 
 	// Matcher
-	progressMinDuration = 200 * time.Millisecond
+	numPartitionsMultiplier = 8
+	maxPartitions           = 32
+	progressMinDuration     = 200 * time.Millisecond
 
 	// Capacity of each chunk
 	chunkSize int = 100
 
+	// Pre-allocated memory slices to minimize GC
+	slab16Size int = 100 * 1024 // 200KB * 32 = 12.8MB
+	slab32Size int = 2048       // 8KB * 32 = 256KB
+
 	// Do not cache results of low selectivity queries
 	queryCacheMax int = chunkSize / 5
 
 	// Not to cache mergers with large lists
 	mergerCacheMax int = 100000
+
+	// History
+	defaultHistoryMax int = 1000
+
+	// Jump labels
+	defaultJumpLabels string = "asdfghjklqwertyuiopzxcvbnm1234567890ASDFGHJKLQWERTYUIOPZXCVBNM`~;:,<.>/?'\"!@#$%^&*()[{]}-_=+"
 )
 
 // fzf events
@@ -41,5 +56,13 @@ const (
 	EvtSearchNew
 	EvtSearchProgress
 	EvtSearchFin
+	EvtHeader
 	EvtClose
 )
+
+const (
+	exitOk        = 0
+	exitNoMatch   = 1
+	exitError     = 2
+	exitInterrupt = 130
+)

src/core.go

@@ -3,7 +3,7 @@ Package fzf implements fzf, a command-line fuzzy finder.
 
 The MIT License (MIT)
 
-Copyright (c) 2015 Junegunn Choi
+Copyright (c) 2016 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -28,83 +28,93 @@ package fzf
 import (
 	"fmt"
 	"os"
-	"runtime"
 	"time"
 
 	"github.com/junegunn/fzf/src/util"
 )
 
-func initProcs() {
-	runtime.GOMAXPROCS(runtime.NumCPU())
-}
-
 /*
 Reader   -> EvtReadFin
 Reader   -> EvtReadNew        -> Matcher  (restart)
 Terminal -> EvtSearchNew:bool -> Matcher  (restart)
 Matcher  -> EvtSearchProgress -> Terminal (update info)
 Matcher  -> EvtSearchFin      -> Terminal (update list)
+Matcher  -> EvtHeader         -> Terminal (update header)
 */
 
 // Run starts fzf
-func Run(options *Options) {
-	initProcs()
-
-	opts := ParseOptions()
+func Run(opts *Options) {
 	sort := opts.Sort > 0
-	rankTiebreak = opts.Tiebreak
+	sortCriteria = opts.Criteria
 
 	if opts.Version {
-		fmt.Println(Version)
-		os.Exit(0)
+		fmt.Println(version)
+		os.Exit(exitOk)
 	}
 
 	// Event channel
 	eventBox := util.NewEventBox()
 
 	// ANSI code processor
-	ansiProcessor := func(data *string) (*string, []ansiOffset) {
-		// By default, we do nothing
-		return data, nil
+	ansiProcessor := func(data []byte) (util.Chars, *[]ansiOffset) {
+		return util.ToChars(data), nil
+	}
+	ansiProcessorRunes := func(data []rune) (util.Chars, *[]ansiOffset) {
+		return util.RunesToChars(data), nil
 	}
 	if opts.Ansi {
 		if opts.Theme != nil {
-			ansiProcessor = func(data *string) (*string, []ansiOffset) {
-				return extractColor(data)
+			var state *ansiState
+			ansiProcessor = func(data []byte) (util.Chars, *[]ansiOffset) {
+				trimmed, offsets, newState := extractColor(string(data), state, nil)
+				state = newState
+				return util.RunesToChars([]rune(trimmed)), offsets
 			}
 		} else {
 			// When color is disabled but ansi option is given,
 			// we simply strip out ANSI codes from the input
-			ansiProcessor = func(data *string) (*string, []ansiOffset) {
-				trimmed, _ := extractColor(data)
-				return trimmed, nil
+			ansiProcessor = func(data []byte) (util.Chars, *[]ansiOffset) {
+				trimmed, _, _ := extractColor(string(data), nil, nil)
+				return util.RunesToChars([]rune(trimmed)), nil
 			}
 		}
+		ansiProcessorRunes = func(data []rune) (util.Chars, *[]ansiOffset) {
+			return ansiProcessor([]byte(string(data)))
+		}
 	}
 
 	// Chunk list
 	var chunkList *ChunkList
+	header := make([]string, 0, opts.HeaderLines)
 	if len(opts.WithNth) == 0 {
-		chunkList = NewChunkList(func(data *string, index int) *Item {
-			data, colors := ansiProcessor(data)
+		chunkList = NewChunkList(func(data []byte, index int) *Item {
+			if len(header) < opts.HeaderLines {
+				header = append(header, string(data))
+				eventBox.Set(EvtHeader, header)
+				return nil
+			}
+			chars, colors := ansiProcessor(data)
 			return &Item{
-				text:   data,
-				index:  uint32(index),
-				colors: colors,
-				rank:   Rank{0, 0, uint32(index)}}
+				index:  int32(index),
+				text:   chars,
+				colors: colors}
 		})
 	} else {
-		chunkList = NewChunkList(func(data *string, index int) *Item {
-			tokens := Tokenize(data, opts.Delimiter)
+		chunkList = NewChunkList(func(data []byte, index int) *Item {
+			tokens := Tokenize(util.ToChars(data), opts.Delimiter)
 			trans := Transform(tokens, opts.WithNth)
+			if len(header) < opts.HeaderLines {
+				header = append(header, string(joinTokens(trans)))
+				eventBox.Set(EvtHeader, header)
+				return nil
+			}
+			textRunes := joinTokens(trans)
 			item := Item{
-				text:     joinTokens(trans),
-				origText: data,
-				index:    uint32(index),
-				colors:   nil,
-				rank:     Rank{0, 0, uint32(index)}}
+				index:    int32(index),
+				origText: &data,
+				colors:   nil}
 
-			trimmed, colors := ansiProcessor(item.text)
+			trimmed, colors := ansiProcessorRunes(textRunes)
 			item.text = trimmed
 			item.colors = colors
 			return &item
@@ -114,33 +124,52 @@ func Run(options *Options) {
 	// Reader
 	streamingFilter := opts.Filter != nil && !sort && !opts.Tac && !opts.Sync
 	if !streamingFilter {
-		reader := Reader{func(str string) { chunkList.Push(str) }, eventBox}
+		reader := Reader{func(data []byte) bool {
+			return chunkList.Push(data)
+		}, eventBox, opts.ReadZero}
 		go reader.ReadSource()
 	}
 
 	// Matcher
+	forward := true
+	for _, cri := range opts.Criteria[1:] {
+		if cri == byEnd {
+			forward = false
+			break
+		}
+		if cri == byBegin {
+			break
+		}
+	}
 	patternBuilder := func(runes []rune) *Pattern {
 		return BuildPattern(
-			opts.Mode, opts.Case, opts.Nth, opts.Delimiter, runes)
+			opts.Fuzzy, opts.FuzzyAlgo, opts.Extended, opts.Case, forward,
+			opts.Filter == nil, opts.Nth, opts.Delimiter, runes)
 	}
 	matcher := NewMatcher(patternBuilder, sort, opts.Tac, eventBox)
 
 	// Filtering mode
 	if opts.Filter != nil {
 		if opts.PrintQuery {
-			fmt.Println(*opts.Filter)
+			opts.Printer(*opts.Filter)
 		}
 
 		pattern := patternBuilder([]rune(*opts.Filter))
 
+		found := false
 		if streamingFilter {
+			slab := util.MakeSlab(slab16Size, slab32Size)
 			reader := Reader{
-				func(str string) {
-					item := chunkList.trans(&str, 0)
-					if pattern.MatchItem(item) {
-						fmt.Println(*item.text)
+				func(runes []byte) bool {
+					item := chunkList.trans(runes, 0)
+					if item != nil {
+						if result, _, _ := pattern.MatchItem(item, false, slab); result != nil {
+							opts.Printer(item.text.ToString())
+							found = true
+						}
 					}
-				}, eventBox}
+					return false
+				}, eventBox, opts.ReadZero}
 			reader.ReadSource()
 		} else {
 			eventBox.Unwatch(EvtReadNew)
@@ -151,10 +180,14 @@ func Run(options *Options) {
 				chunks:  snapshot,
 				pattern: pattern})
 			for i := 0; i < merger.Length(); i++ {
-				fmt.Println(merger.Get(i).AsString())
+				opts.Printer(merger.Get(i).item.AsString(opts.Ansi))
+				found = true
 			}
 		}
-		os.Exit(0)
+		if found {
+			os.Exit(exitOk)
+		}
+		os.Exit(exitNoMatch)
 	}
 
 	// Synchronous search
@@ -207,6 +240,9 @@ func Run(options *Options) {
 						terminal.UpdateProgress(val)
 					}
 
+				case EvtHeader:
+					terminal.UpdateHeader(value.([]string))
+
 				case EvtSearchFin:
 					switch val := value.(type) {
 					case *Merger:
@@ -218,15 +254,18 @@ func Run(options *Options) {
 							} else if val.final {
 								if opts.Exit0 && count == 0 || opts.Select1 && count == 1 {
 									if opts.PrintQuery {
-										fmt.Println(opts.Query)
+										opts.Printer(opts.Query)
 									}
 									if len(opts.Expect) > 0 {
-										fmt.Println()
+										opts.Printer("")
 									}
 									for i := 0; i < count; i++ {
-										fmt.Println(val.Get(i).AsString())
+										opts.Printer(val.Get(i).item.AsString(opts.Ansi))
 									}
-									os.Exit(0)
+									if count > 0 {
+										os.Exit(exitOk)
+									}
+									os.Exit(exitNoMatch)
 								}
 								deferred = false
 								terminal.startChan <- true

src/curses/curses.go

@@ -3,18 +3,21 @@ package curses
 /*
 #include <ncurses.h>
 #include <locale.h>
-#cgo LDFLAGS: -lncurses
-void swapOutput() {
-  FILE* temp = stdout;
-  stdout = stderr;
-  stderr = temp;
+#cgo !static LDFLAGS: -lncurses
+#cgo static LDFLAGS: -l:libncursesw.a -l:libtinfo.a -l:libgpm.a -ldl
+#cgo android static LDFLAGS: -l:libncurses.a -fPIE -march=armv7-a -mfpu=neon -mhard-float -Wl,--no-warn-mismatch
+
+SCREEN *c_newterm () {
+	return newterm(NULL, stderr, stdin);
 }
+
 */
 import "C"
 
 import (
+	"fmt"
 	"os"
-	"os/signal"
+	"strings"
 	"syscall"
 	"time"
 	"unicode/utf8"
@@ -54,18 +57,39 @@ const (
 
 	Invalid
 	Mouse
+	DoubleClick
 
 	BTab
+	BSpace
 
 	Del
 	PgUp
 	PgDn
 
+	Up
+	Down
+	Left
+	Right
+	Home
+	End
+
+	SLeft
+	SRight
+
 	F1
 	F2
 	F3
 	F4
+	F5
+	F6
+	F7
+	F8
+	F9
+	F10
 
+	AltEnter
+	AltSpace
+	AltSlash
 	AltBS
 	AltA
 	AltB
@@ -88,23 +112,32 @@ const (
 	ColInfo
 	ColCursor
 	ColSelected
-	ColUser
+	ColHeader
+	ColBorder
+	ColUser // Should be the last entry
 )
 
 const (
 	doubleClickDuration = 500 * time.Millisecond
+	colDefault          = -1
+	colUndefined        = -2
 )
 
 type ColorTheme struct {
-	darkBg       C.short
-	prompt       C.short
-	match        C.short
-	current      C.short
-	currentMatch C.short
-	spinner      C.short
-	info         C.short
-	cursor       C.short
-	selected     C.short
+	UseDefault   bool
+	Fg           int16
+	Bg           int16
+	DarkBg       int16
+	Prompt       int16
+	Match        int16
+	Current      int16
+	CurrentMatch int16
+	Spinner      int16
+	Info         int16
+	Cursor       int16
+	Selected     int16
+	Header       int16
+	Border       int16
 }
 
 type Event struct {
@@ -129,46 +162,108 @@ var (
 	_colorMap     map[int]int
 	_prevDownTime time.Time
 	_clickY       []int
+	_screen       *C.SCREEN
 	Default16     *ColorTheme
 	Dark256       *ColorTheme
 	Light256      *ColorTheme
-	DarkBG        C.short
+	FG            int
+	CurrentFG     int
+	BG            int
+	DarkBG        int
 )
 
+type Window struct {
+	win    *C.WINDOW
+	Top    int
+	Left   int
+	Width  int
+	Height int
+}
+
+func NewWindow(top int, left int, width int, height int, border bool) *Window {
+	win := C.newwin(C.int(height), C.int(width), C.int(top), C.int(left))
+	if border {
+		attr := _color(ColBorder, false)
+		C.wattron(win, attr)
+		C.box(win, 0, 0)
+		C.wattroff(win, attr)
+	}
+	return &Window{
+		win:    win,
+		Top:    top,
+		Left:   left,
+		Width:  width,
+		Height: height,
+	}
+}
+
+func EmptyTheme() *ColorTheme {
+	return &ColorTheme{
+		UseDefault:   true,
+		Fg:           colUndefined,
+		Bg:           colUndefined,
+		DarkBg:       colUndefined,
+		Prompt:       colUndefined,
+		Match:        colUndefined,
+		Current:      colUndefined,
+		CurrentMatch: colUndefined,
+		Spinner:      colUndefined,
+		Info:         colUndefined,
+		Cursor:       colUndefined,
+		Selected:     colUndefined,
+		Header:       colUndefined,
+		Border:       colUndefined}
+}
+
 func init() {
 	_prevDownTime = time.Unix(0, 0)
 	_clickY = []int{}
 	_colorMap = make(map[int]int)
 	Default16 = &ColorTheme{
-		darkBg:       C.COLOR_BLACK,
-		prompt:       C.COLOR_BLUE,
-		match:        C.COLOR_GREEN,
-		current:      C.COLOR_YELLOW,
-		currentMatch: C.COLOR_GREEN,
-		spinner:      C.COLOR_GREEN,
-		info:         C.COLOR_WHITE,
-		cursor:       C.COLOR_RED,
-		selected:     C.COLOR_MAGENTA}
+		UseDefault:   true,
+		Fg:           15,
+		Bg:           0,
+		DarkBg:       C.COLOR_BLACK,
+		Prompt:       C.COLOR_BLUE,
+		Match:        C.COLOR_GREEN,
+		Current:      C.COLOR_YELLOW,
+		CurrentMatch: C.COLOR_GREEN,
+		Spinner:      C.COLOR_GREEN,
+		Info:         C.COLOR_WHITE,
+		Cursor:       C.COLOR_RED,
+		Selected:     C.COLOR_MAGENTA,
+		Header:       C.COLOR_CYAN,
+		Border:       C.COLOR_BLACK}
 	Dark256 = &ColorTheme{
-		darkBg:       236,
-		prompt:       110,
-		match:        108,
-		current:      254,
-		currentMatch: 151,
-		spinner:      148,
-		info:         144,
-		cursor:       161,
-		selected:     168}
+		UseDefault:   true,
+		Fg:           15,
+		Bg:           0,
+		DarkBg:       236,
+		Prompt:       110,
+		Match:        108,
+		Current:      254,
+		CurrentMatch: 151,
+		Spinner:      148,
+		Info:         144,
+		Cursor:       161,
+		Selected:     168,
+		Header:       109,
+		Border:       59}
 	Light256 = &ColorTheme{
-		darkBg:       251,
-		prompt:       25,
-		match:        66,
-		current:      237,
-		currentMatch: 23,
-		spinner:      65,
-		info:         101,
-		cursor:       161,
-		selected:     168}
+		UseDefault:   true,
+		Fg:           15,
+		Bg:           0,
+		DarkBg:       251,
+		Prompt:       25,
+		Match:        66,
+		Current:      237,
+		CurrentMatch: 23,
+		Spinner:      65,
+		Info:         101,
+		Cursor:       161,
+		Selected:     168,
+		Header:       31,
+		Border:       145}
 }
 
 func attrColored(pair int, bold bool) C.int {
@@ -229,57 +324,79 @@ func Init(theme *ColorTheme, black bool, mouse bool) {
 		// syscall.Dup2(int(in.Fd()), int(os.Stdin.Fd()))
 	}
 
-	C.swapOutput()
-
 	C.setlocale(C.LC_ALL, C.CString(""))
-	C.initscr()
+	_screen = C.c_newterm()
+	if _screen == nil {
+		fmt.Println("Invalid $TERM: " + os.Getenv("TERM"))
+		os.Exit(2)
+	}
+	C.set_term(_screen)
 	if mouse {
 		C.mousemask(C.ALL_MOUSE_EVENTS, nil)
 	}
-	C.cbreak()
 	C.noecho()
 	C.raw() // stty dsusp undef
 
-	intChan := make(chan os.Signal, 1)
-	signal.Notify(intChan, os.Interrupt, os.Kill)
-	go func() {
-		<-intChan
-		Close()
-		os.Exit(1)
-	}()
-
 	if theme != nil {
 		C.start_color()
-		initPairs(theme, black)
+		var baseTheme *ColorTheme
+		if C.tigetnum(C.CString("colors")) >= 256 {
+			baseTheme = Dark256
+		} else {
+			baseTheme = Default16
+		}
+		initPairs(baseTheme, theme, black)
 		_color = attrColored
 	} else {
 		_color = attrMono
 	}
 }
 
-func initPairs(theme *ColorTheme, black bool) {
-	var bg C.short
+func override(a int16, b int16) C.short {
+	if b == colUndefined {
+		return C.short(a)
+	}
+	return C.short(b)
+}
+
+func initPairs(baseTheme *ColorTheme, theme *ColorTheme, black bool) {
+	fg := override(baseTheme.Fg, theme.Fg)
+	bg := override(baseTheme.Bg, theme.Bg)
 	if black {
 		bg = C.COLOR_BLACK
-	} else {
+	} else if theme.UseDefault {
+		fg = colDefault
+		bg = colDefault
 		C.use_default_colors()
-		bg = -1
+	}
+	if theme.UseDefault {
+		FG = colDefault
+		BG = colDefault
+	} else {
+		FG = int(fg)
+		BG = int(bg)
+		C.assume_default_colors(C.int(override(baseTheme.Fg, theme.Fg)), C.int(bg))
 	}
 
-	DarkBG = theme.darkBg
-	C.init_pair(ColPrompt, theme.prompt, bg)
-	C.init_pair(ColMatch, theme.match, bg)
-	C.init_pair(ColCurrent, theme.current, DarkBG)
-	C.init_pair(ColCurrentMatch, theme.currentMatch, DarkBG)
-	C.init_pair(ColSpinner, theme.spinner, bg)
-	C.init_pair(ColInfo, theme.info, bg)
-	C.init_pair(ColCursor, theme.cursor, DarkBG)
-	C.init_pair(ColSelected, theme.selected, DarkBG)
+	currentFG := override(baseTheme.Current, theme.Current)
+	darkBG := override(baseTheme.DarkBg, theme.DarkBg)
+	CurrentFG = int(currentFG)
+	DarkBG = int(darkBG)
+	C.init_pair(ColPrompt, override(baseTheme.Prompt, theme.Prompt), bg)
+	C.init_pair(ColMatch, override(baseTheme.Match, theme.Match), bg)
+	C.init_pair(ColCurrent, currentFG, darkBG)
+	C.init_pair(ColCurrentMatch, override(baseTheme.CurrentMatch, theme.CurrentMatch), darkBG)
+	C.init_pair(ColSpinner, override(baseTheme.Spinner, theme.Spinner), bg)
+	C.init_pair(ColInfo, override(baseTheme.Info, theme.Info), bg)
+	C.init_pair(ColCursor, override(baseTheme.Cursor, theme.Cursor), darkBG)
+	C.init_pair(ColSelected, override(baseTheme.Selected, theme.Selected), darkBG)
+	C.init_pair(ColHeader, override(baseTheme.Header, theme.Header), bg)
+	C.init_pair(ColBorder, override(baseTheme.Border, theme.Border), bg)
 }
 
 func Close() {
 	C.endwin()
-	C.swapOutput()
+	C.delscreen(_screen)
 }
 
 func GetBytes() []byte {
@@ -330,7 +447,9 @@ func mouseSequence(sz *int) Event {
 		97, 101, 105, 113: // scroll-down / shift / cmd / ctrl
 		mod := _buf[3] >= 100
 		s := 1 - int(_buf[3]%2)*2
-		return Event{Mouse, 0, &MouseEvent{0, 0, s, false, false, mod}}
+		x := int(_buf[4] - 33)
+		y := int(_buf[5] - 33)
+		return Event{Mouse, 0, &MouseEvent{y, x, s, false, false, mod}}
 	}
 	return Event{Invalid, 0, nil}
 }
@@ -341,6 +460,12 @@ func escSequence(sz *int) Event {
 	}
 	*sz = 2
 	switch _buf[1] {
+	case 13:
+		return Event{AltEnter, 0, nil}
+	case 32:
+		return Event{AltSpace, 0, nil}
+	case 47:
+		return Event{AltSlash, 0, nil}
 	case 98:
 		return Event{AltB, 0, nil}
 	case 100:
@@ -356,19 +481,19 @@ func escSequence(sz *int) Event {
 		*sz = 3
 		switch _buf[2] {
 		case 68:
-			return Event{CtrlB, 0, nil}
+			return Event{Left, 0, nil}
 		case 67:
-			return Event{CtrlF, 0, nil}
+			return Event{Right, 0, nil}
 		case 66:
-			return Event{CtrlJ, 0, nil}
+			return Event{Down, 0, nil}
 		case 65:
-			return Event{CtrlK, 0, nil}
+			return Event{Up, 0, nil}
 		case 90:
 			return Event{BTab, 0, nil}
 		case 72:
-			return Event{CtrlA, 0, nil}
+			return Event{Home, 0, nil}
 		case 70:
-			return Event{CtrlE, 0, nil}
+			return Event{End, 0, nil}
 		case 77:
 			return mouseSequence(sz)
 		case 80:
@@ -386,11 +511,25 @@ func escSequence(sz *int) Event {
 			*sz = 4
 			switch _buf[2] {
 			case 50:
+				if len(_buf) == 5 && _buf[4] == 126 {
+					*sz = 5
+					switch _buf[3] {
+					case 48:
+						return Event{F9, 0, nil}
+					case 49:
+						return Event{F10, 0, nil}
+					}
+				}
+				// Bracketed paste mode \e[200~ / \e[201
+				if _buf[3] == 48 && (_buf[4] == 48 || _buf[4] == 49) && _buf[5] == 126 {
+					*sz = 6
+					return Event{Invalid, 0, nil}
+				}
 				return Event{Invalid, 0, nil} // INS
 			case 51:
 				return Event{Del, 0, nil}
 			case 52:
-				return Event{CtrlE, 0, nil}
+				return Event{End, 0, nil}
 			case 53:
 				return Event{PgUp, 0, nil}
 			case 54:
@@ -398,7 +537,22 @@ func escSequence(sz *int) Event {
 			case 49:
 				switch _buf[3] {
 				case 126:
-					return Event{CtrlA, 0, nil}
+					return Event{Home, 0, nil}
+				case 53, 55, 56, 57:
+					if len(_buf) == 5 && _buf[4] == 126 {
+						*sz = 5
+						switch _buf[3] {
+						case 53:
+							return Event{F5, 0, nil}
+						case 55:
+							return Event{F6, 0, nil}
+						case 56:
+							return Event{F7, 0, nil}
+						case 57:
+							return Event{F8, 0, nil}
+						}
+					}
+					return Event{Invalid, 0, nil}
 				case 59:
 					if len(_buf) != 6 {
 						return Event{Invalid, 0, nil}
@@ -408,16 +562,16 @@ func escSequence(sz *int) Event {
 					case 50:
 						switch _buf[5] {
 						case 68:
-							return Event{CtrlA, 0, nil}
+							return Event{Home, 0, nil}
 						case 67:
-							return Event{CtrlE, 0, nil}
+							return Event{End, 0, nil}
 						}
 					case 53:
 						switch _buf[5] {
 						case 68:
-							return Event{AltB, 0, nil}
+							return Event{SLeft, 0, nil}
 						case 67:
-							return Event{AltF, 0, nil}
+							return Event{SRight, 0, nil}
 						}
 					} // _buf[4]
 				} // _buf[3]
@@ -444,10 +598,14 @@ func GetChar() Event {
 	}()
 
 	switch _buf[0] {
-	case CtrlC, CtrlG, CtrlQ:
+	case CtrlC:
 		return Event{CtrlC, 0, nil}
+	case CtrlG:
+		return Event{CtrlG, 0, nil}
+	case CtrlQ:
+		return Event{CtrlQ, 0, nil}
 	case 127:
-		return Event{CtrlH, 0, nil}
+		return Event{BSpace, 0, nil}
 	case ESC:
 		return escSequence(&sz)
 	}
@@ -464,24 +622,37 @@ func GetChar() Event {
 	return Event{Rune, r, nil}
 }
 
-func Move(y int, x int) {
-	C.move(C.int(y), C.int(x))
+func (w *Window) Close() {
+	C.delwin(w.win)
 }
 
-func MoveAndClear(y int, x int) {
-	Move(y, x)
-	C.clrtoeol()
+func (w *Window) Enclose(y int, x int) bool {
+	return bool(C.wenclose(w.win, C.int(y), C.int(x)))
 }
 
-func Print(text string) {
-	C.addstr(C.CString(text))
+func (w *Window) Move(y int, x int) {
+	C.wmove(w.win, C.int(y), C.int(x))
 }
 
-func CPrint(pair int, bold bool, text string) {
+func (w *Window) MoveAndClear(y int, x int) {
+	w.Move(y, x)
+	C.wclrtoeol(w.win)
+}
+
+func (w *Window) Print(text string) {
+	C.waddstr(w.win, C.CString(strings.Map(func(r rune) rune {
+		if r < 32 {
+			return -1
+		}
+		return r
+	}, text)))
+}
+
+func (w *Window) CPrint(pair int, bold bool, text string) {
 	attr := _color(pair, bold)
-	C.attron(attr)
-	Print(text)
-	C.attroff(attr)
+	C.wattron(w.win, attr)
+	w.Print(text)
+	C.wattroff(w.win, attr)
 }
 
 func Clear() {
@@ -496,6 +667,30 @@ func Refresh() {
 	C.refresh()
 }
 
+func (w *Window) Erase() {
+	C.werase(w.win)
+}
+
+func (w *Window) Fill(str string) bool {
+	return C.waddstr(w.win, C.CString(str)) == C.OK
+}
+
+func (w *Window) CFill(str string, fg int, bg int, bold bool) bool {
+	attr := _color(PairFor(fg, bg), bold)
+	C.wattron(w.win, attr)
+	ret := w.Fill(str)
+	C.wattroff(w.win, attr)
+	return ret
+}
+
+func (w *Window) Refresh() {
+	C.wnoutrefresh(w.win)
+}
+
+func DoUpdate() {
+	C.doupdate()
+}
+
 func PairFor(fg int, bg int) int {
 	key := (fg << 8) + bg
 	if found, prs := _colorMap[key]; prs {

src/history.go

@@ -0,0 +1,96 @@
+package fzf
+
+import (
+	"errors"
+	"io/ioutil"
+	"os"
+	"strings"
+)
+
+// History struct represents input history
+type History struct {
+	path     string
+	lines    []string
+	modified map[int]string
+	maxSize  int
+	cursor   int
+}
+
+// NewHistory returns the pointer to a new History struct
+func NewHistory(path string, maxSize int) (*History, error) {
+	fmtError := func(e error) error {
+		if os.IsPermission(e) {
+			return errors.New("permission denied: " + path)
+		}
+		return errors.New("invalid history file: " + e.Error())
+	}
+
+	// Read history file
+	data, err := ioutil.ReadFile(path)
+	if err != nil {
+		// If it doesn't exist, check if we can create a file with the name
+		if os.IsNotExist(err) {
+			data = []byte{}
+			if err := ioutil.WriteFile(path, data, 0600); err != nil {
+				return nil, fmtError(err)
+			}
+		} else {
+			return nil, fmtError(err)
+		}
+	}
+	// Split lines and limit the maximum number of lines
+	lines := strings.Split(strings.Trim(string(data), "\n"), "\n")
+	if len(lines[len(lines)-1]) > 0 {
+		lines = append(lines, "")
+	}
+	return &History{
+		path:     path,
+		maxSize:  maxSize,
+		lines:    lines,
+		modified: make(map[int]string),
+		cursor:   len(lines) - 1}, nil
+}
+
+func (h *History) append(line string) error {
+	// We don't append empty lines
+	if len(line) == 0 {
+		return nil
+	}
+
+	lines := append(h.lines[:len(h.lines)-1], line)
+	if len(lines) > h.maxSize {
+		lines = lines[len(lines)-h.maxSize : len(lines)]
+	}
+	h.lines = append(lines, "")
+	return ioutil.WriteFile(h.path, []byte(strings.Join(h.lines, "\n")), 0600)
+}
+
+func (h *History) override(str string) {
+	// You can update the history but they're not written to the file
+	if h.cursor == len(h.lines)-1 {
+		h.lines[h.cursor] = str
+	} else if h.cursor < len(h.lines)-1 {
+		h.modified[h.cursor] = str
+	}
+}
+
+func (h *History) current() string {
+	if str, prs := h.modified[h.cursor]; prs {
+		return str
+	}
+	return h.lines[h.cursor]
+}
+
+func (h *History) previous() string {
+	if h.cursor > 0 {
+		h.cursor--
+	}
+	return h.current()
+}
+
+func (h *History) next() string {
+	if h.cursor < len(h.lines)-1 {
+		h.cursor++
+	}
+	return h.current()
+}

src/history_test.go

@@ -0,0 +1,59 @@
+package fzf
+
+import (
+	"os/user"
+	"testing"
+)
+
+func TestHistory(t *testing.T) {
+	maxHistory := 50
+
+	// Invalid arguments
+	user, _ := user.Current()
+	paths := []string{"/etc", "/proc"}
+	if user.Name != "root" {
+		paths = append(paths, "/etc/sudoers")
+	}
+	for _, path := range paths {
+		if _, e := NewHistory(path, maxHistory); e == nil {
+			t.Error("Error expected for: " + path)
+		}
+	}
+	{ // Append lines
+		h, _ := NewHistory("/tmp/fzf-history", maxHistory)
+		for i := 0; i < maxHistory+10; i++ {
+			h.append("foobar")
+		}
+	}
+	{ // Read lines
+		h, _ := NewHistory("/tmp/fzf-history", maxHistory)
+		if len(h.lines) != maxHistory+1 {
+			t.Errorf("Expected: %d, actual: %d\n", maxHistory+1, len(h.lines))
+		}
+		for i := 0; i < maxHistory; i++ {
+			if h.lines[i] != "foobar" {
+				t.Error("Expected: foobar, actual: " + h.lines[i])
+			}
+		}
+	}
+	{ // Append lines
+		h, _ := NewHistory("/tmp/fzf-history", maxHistory)
+		h.append("barfoo")
+		h.append("")
+		h.append("foobarbaz")
+	}
+	{ // Read lines again
+		h, _ := NewHistory("/tmp/fzf-history", maxHistory)
+		if len(h.lines) != maxHistory+1 {
+			t.Errorf("Expected: %d, actual: %d\n", maxHistory+1, len(h.lines))
+		}
+		compare := func(idx int, exp string) {
+			if h.lines[idx] != exp {
+				t.Errorf("Expected: %s, actual: %s\n", exp, h.lines[idx])
+			}
+		}
+		compare(maxHistory-3, "foobar")
+		compare(maxHistory-2, "barfoo")
+		compare(maxHistory-1, "foobarbaz")
+	}
+}

src/item.go

@@ -1,235 +1,39 @@
 package fzf
 
 import (
-	"math"
-
-	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/util"
 )
 
-// Offset holds two 32-bit integers denoting the offsets of a matched substring
-type Offset [2]int32
-
-type colorOffset struct {
-	offset [2]int32
-	color  int
-	bold   bool
-}
-
 // Item represents each input line
 type Item struct {
-	text        *string
-	origText    *string
-	transformed *[]Token
-	index       uint32
-	offsets     []Offset
-	colors      []ansiOffset
-	rank        Rank
+	index       int32
+	text        util.Chars
+	origText    *[]byte
+	colors      *[]ansiOffset
+	transformed []Token
 }
 
-// Rank is used to sort the search result
-type Rank struct {
-	matchlen uint16
-	tiebreak uint16
-	index    uint32
+// Index returns ordinal index of the Item
+func (item *Item) Index() int32 {
+	return item.index
 }
 
-// Tiebreak criterion to use. Never changes once fzf is started.
-var rankTiebreak tiebreak
-
-// Rank calculates rank of the Item
-func (i *Item) Rank(cache bool) Rank {
-	if cache && (i.rank.matchlen > 0 || i.rank.tiebreak > 0) {
-		return i.rank
+// Colors returns ansiOffsets of the Item
+func (item *Item) Colors() []ansiOffset {
+	if item.colors == nil {
+		return []ansiOffset{}
 	}
-	matchlen := 0
-	prevEnd := 0
-	minBegin := math.MaxUint16
-	for _, offset := range i.offsets {
-		begin := int(offset[0])
-		end := int(offset[1])
-		if prevEnd > begin {
-			begin = prevEnd
-		}
-		if end > prevEnd {
-			prevEnd = end
-		}
-		if end > begin {
-			if begin < minBegin {
-				minBegin = begin
-			}
-			matchlen += end - begin
-		}
-	}
-	var tiebreak uint16
-	switch rankTiebreak {
-	case byLength:
-		tiebreak = uint16(len(*i.text))
-	case byBegin:
-		// We can't just look at i.offsets[0][0] because it can be an inverse term
-		tiebreak = uint16(minBegin)
-	case byEnd:
-		if prevEnd > 0 {
-			tiebreak = uint16(1 + len(*i.text) - prevEnd)
-		} else {
-			// Empty offsets due to inverse terms.
-			tiebreak = 1
-		}
-	case byIndex:
-		tiebreak = 1
-	}
-	rank := Rank{uint16(matchlen), tiebreak, i.index}
-	if cache {
-		i.rank = rank
-	}
-	return rank
+	return *item.colors
 }
 
 // AsString returns the original string
-func (i *Item) AsString() string {
-	if i.origText != nil {
-		return *i.origText
-	}
-	return *i.text
-}
-
-func (item *Item) colorOffsets(color int, bold bool, current bool) []colorOffset {
-	if len(item.colors) == 0 {
-		var offsets []colorOffset
-		for _, off := range item.offsets {
-			offsets = append(offsets, colorOffset{offset: off, color: color, bold: bold})
+func (item *Item) AsString(stripAnsi bool) string {
+	if item.origText != nil {
+		if stripAnsi {
+			trimmed, _, _ := extractColor(string(*item.origText), nil, nil)
+			return trimmed
 		}
-		return offsets
+		return string(*item.origText)
 	}
-
-	// Find max column
-	var maxCol int32
-	for _, off := range item.offsets {
-		if off[1] > maxCol {
-			maxCol = off[1]
-		}
-	}
-	for _, ansi := range item.colors {
-		if ansi.offset[1] > maxCol {
-			maxCol = ansi.offset[1]
-		}
-	}
-	cols := make([]int, maxCol)
-
-	for colorIndex, ansi := range item.colors {
-		for i := ansi.offset[0]; i < ansi.offset[1]; i++ {
-			cols[i] = colorIndex + 1 // XXX
-		}
-	}
-
-	for _, off := range item.offsets {
-		for i := off[0]; i < off[1]; i++ {
-			cols[i] = -1
-		}
-	}
-
-	// sort.Sort(ByOrder(offsets))
-
-	// Merge offsets
-	// ------------  ----  --  ----
-	//   ++++++++      ++++++++++
-	// --++++++++--  --++++++++++---
-	curr := 0
-	start := 0
-	var offsets []colorOffset
-	add := func(idx int) {
-		if curr != 0 && idx > start {
-			if curr == -1 {
-				offsets = append(offsets, colorOffset{
-					offset: Offset{int32(start), int32(idx)}, color: color, bold: bold})
-			} else {
-				ansi := item.colors[curr-1]
-				bg := ansi.color.bg
-				if current && bg == -1 {
-					bg = int(curses.DarkBG)
-				}
-				offsets = append(offsets, colorOffset{
-					offset: Offset{int32(start), int32(idx)},
-					color:  curses.PairFor(ansi.color.fg, bg),
-					bold:   ansi.color.bold || bold})
-			}
-		}
-	}
-	for idx, col := range cols {
-		if col != curr {
-			add(idx)
-			start = idx
-			curr = col
-		}
-	}
-	add(int(maxCol))
-	return offsets
-}
-
-// ByOrder is for sorting substring offsets
-type ByOrder []Offset
-
-func (a ByOrder) Len() int {
-	return len(a)
-}
-
-func (a ByOrder) Swap(i, j int) {
-	a[i], a[j] = a[j], a[i]
-}
-
-func (a ByOrder) Less(i, j int) bool {
-	ioff := a[i]
-	joff := a[j]
-	return (ioff[0] < joff[0]) || (ioff[0] == joff[0]) && (ioff[1] <= joff[1])
-}
-
-// ByRelevance is for sorting Items
-type ByRelevance []*Item
-
-func (a ByRelevance) Len() int {
-	return len(a)
-}
-
-func (a ByRelevance) Swap(i, j int) {
-	a[i], a[j] = a[j], a[i]
-}
-
-func (a ByRelevance) Less(i, j int) bool {
-	irank := a[i].Rank(true)
-	jrank := a[j].Rank(true)
-
-	return compareRanks(irank, jrank, false)
-}
-
-// ByRelevanceTac is for sorting Items
-type ByRelevanceTac []*Item
-
-func (a ByRelevanceTac) Len() int {
-	return len(a)
-}
-
-func (a ByRelevanceTac) Swap(i, j int) {
-	a[i], a[j] = a[j], a[i]
-}
-
-func (a ByRelevanceTac) Less(i, j int) bool {
-	irank := a[i].Rank(true)
-	jrank := a[j].Rank(true)
-
-	return compareRanks(irank, jrank, true)
-}
-
-func compareRanks(irank Rank, jrank Rank, tac bool) bool {
-	if irank.matchlen < jrank.matchlen {
-		return true
-	} else if irank.matchlen > jrank.matchlen {
-		return false
-	}
-
-	if irank.tiebreak < jrank.tiebreak {
-		return true
-	} else if irank.tiebreak > jrank.tiebreak {
-		return false
-	}
-
-	return (irank.index <= jrank.index) != tac
+	return item.text.ToString()
 }

src/item_test.go

@@ -1,104 +1,23 @@
 package fzf
 
 import (
-	"sort"
 	"testing"
 
-	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/util"
 )
 
-func TestOffsetSort(t *testing.T) {
-	offsets := []Offset{
-		Offset{3, 5}, Offset{2, 7},
-		Offset{1, 3}, Offset{2, 9}}
-	sort.Sort(ByOrder(offsets))
-
-	if offsets[0][0] != 1 || offsets[0][1] != 3 ||
-		offsets[1][0] != 2 || offsets[1][1] != 7 ||
-		offsets[2][0] != 2 || offsets[2][1] != 9 ||
-		offsets[3][0] != 3 || offsets[3][1] != 5 {
-		t.Error("Invalid order:", offsets)
+func TestStringPtr(t *testing.T) {
+	orig := []byte("\x1b[34mfoo")
+	text := []byte("\x1b[34mbar")
+	item := Item{origText: &orig, text: util.ToChars(text)}
+	if item.AsString(true) != "foo" || item.AsString(false) != string(orig) {
+		t.Fail()
+	}
+	if item.AsString(true) != "foo" {
+		t.Fail()
+	}
+	item.origText = nil
+	if item.AsString(true) != string(text) || item.AsString(false) != string(text) {
+		t.Fail()
 	}
 }
-
-func TestRankComparison(t *testing.T) {
-	if compareRanks(Rank{3, 0, 5}, Rank{2, 0, 7}, false) ||
-		!compareRanks(Rank{3, 0, 5}, Rank{3, 0, 6}, false) ||
-		!compareRanks(Rank{1, 2, 3}, Rank{1, 3, 2}, false) ||
-		!compareRanks(Rank{0, 0, 0}, Rank{0, 0, 0}, false) {
-		t.Error("Invalid order")
-	}
-
-	if compareRanks(Rank{3, 0, 5}, Rank{2, 0, 7}, true) ||
-		!compareRanks(Rank{3, 0, 5}, Rank{3, 0, 6}, false) ||
-		!compareRanks(Rank{1, 2, 3}, Rank{1, 3, 2}, true) ||
-		!compareRanks(Rank{0, 0, 0}, Rank{0, 0, 0}, false) {
-		t.Error("Invalid order (tac)")
-	}
-}
-
-// Match length, string length, index
-func TestItemRank(t *testing.T) {
-	strs := []string{"foo", "foobar", "bar", "baz"}
-	item1 := Item{text: &strs[0], index: 1, offsets: []Offset{}}
-	rank1 := item1.Rank(true)
-	if rank1.matchlen != 0 || rank1.tiebreak != 3 || rank1.index != 1 {
-		t.Error(item1.Rank(true))
-	}
-	// Only differ in index
-	item2 := Item{text: &strs[0], index: 0, offsets: []Offset{}}
-
-	items := []*Item{&item1, &item2}
-	sort.Sort(ByRelevance(items))
-	if items[0] != &item2 || items[1] != &item1 {
-		t.Error(items)
-	}
-
-	items = []*Item{&item2, &item1, &item1, &item2}
-	sort.Sort(ByRelevance(items))
-	if items[0] != &item2 || items[1] != &item2 ||
-		items[2] != &item1 || items[3] != &item1 {
-		t.Error(items)
-	}
-
-	// Sort by relevance
-	item3 := Item{text: &strs[1], rank: Rank{0, 0, 2}, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
-	item4 := Item{text: &strs[1], rank: Rank{0, 0, 2}, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
-	item5 := Item{text: &strs[2], rank: Rank{0, 0, 2}, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
-	item6 := Item{text: &strs[2], rank: Rank{0, 0, 2}, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
-	items = []*Item{&item1, &item2, &item3, &item4, &item5, &item6}
-	sort.Sort(ByRelevance(items))
-	if items[0] != &item2 || items[1] != &item1 ||
-		items[2] != &item6 || items[3] != &item4 ||
-		items[4] != &item5 || items[5] != &item3 {
-		t.Error(items)
-	}
-}
-
-func TestColorOffset(t *testing.T) {
-	// ------------ 20 ----  --  ----
-	//   ++++++++        ++++++++++
-	// --++++++++--    --++++++++++---
-	item := Item{
-		offsets: []Offset{Offset{5, 15}, Offset{25, 35}},
-		colors: []ansiOffset{
-			ansiOffset{[2]int32{0, 20}, ansiState{1, 5, false}},
-			ansiOffset{[2]int32{22, 27}, ansiState{2, 6, true}},
-			ansiOffset{[2]int32{30, 32}, ansiState{3, 7, false}},
-			ansiOffset{[2]int32{33, 40}, ansiState{4, 8, true}}}}
-	// [{[0 5] 9 false} {[5 15] 99 false} {[15 20] 9 false} {[22 25] 10 true} {[25 35] 99 false} {[35 40] 11 true}]
-
-	offsets := item.colorOffsets(99, false, true)
-	assert := func(idx int, b int32, e int32, c int, bold bool) {
-		o := offsets[idx]
-		if o.offset[0] != b || o.offset[1] != e || o.color != c || o.bold != bold {
-			t.Error(o)
-		}
-	}
-	assert(0, 0, 5, curses.ColUser, false)
-	assert(1, 5, 15, 99, false)
-	assert(2, 15, 20, curses.ColUser, false)
-	assert(3, 22, 25, curses.ColUser+1, true)
-	assert(4, 25, 35, 99, false)
-	assert(5, 35, 40, curses.ColUser+2, true)
-}

src/matcher.go

@@ -26,6 +26,7 @@ type Matcher struct {
 	eventBox       *util.EventBox
 	reqBox         *util.EventBox
 	partitions     int
+	slab           []*util.Slab
 	mergerCache    map[string]*Merger
 }
 
@@ -37,13 +38,15 @@ const (
 // NewMatcher returns a new Matcher
 func NewMatcher(patternBuilder func([]rune) *Pattern,
 	sort bool, tac bool, eventBox *util.EventBox) *Matcher {
+	partitions := util.Min(numPartitionsMultiplier*runtime.NumCPU(), maxPartitions)
 	return &Matcher{
 		patternBuilder: patternBuilder,
 		sort:           sort,
 		tac:            tac,
 		eventBox:       eventBox,
 		reqBox:         util.NewEventBox(),
-		partitions:     runtime.NumCPU(),
+		partitions:     partitions,
+		slab:           make([]*util.Slab, partitions),
 		mergerCache:    make(map[string]*Merger)}
 }
 
@@ -96,7 +99,7 @@ func (m *Matcher) Loop() {
 		}
 
 		if !cancelled {
-			if merger.Cacheable() {
+			if merger.cacheable() {
 				m.mergerCache[patternString] = merger
 			}
 			merger.final = request.final
@@ -106,18 +109,19 @@ func (m *Matcher) Loop() {
 }
 
 func (m *Matcher) sliceChunks(chunks []*Chunk) [][]*Chunk {
-	perSlice := len(chunks) / m.partitions
+	partitions := m.partitions
+	perSlice := len(chunks) / partitions
 
-	// No need to parallelize
 	if perSlice == 0 {
-		return [][]*Chunk{chunks}
+		partitions = len(chunks)
+		perSlice = 1
 	}
 
-	slices := make([][]*Chunk, m.partitions)
-	for i := 0; i < m.partitions; i++ {
+	slices := make([][]*Chunk, partitions)
+	for i := 0; i < partitions; i++ {
 		start := i * perSlice
 		end := start + perSlice
-		if i == m.partitions-1 {
+		if i == partitions-1 {
 			end = len(chunks)
 		}
 		slices[i] = chunks[start:end]
@@ -127,7 +131,7 @@ func (m *Matcher) sliceChunks(chunks []*Chunk) [][]*Chunk {
 
 type partialResult struct {
 	index   int
-	matches []*Item
+	matches []*Result
 }
 
 func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
@@ -152,17 +156,26 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 
 	for idx, chunks := range slices {
 		waitGroup.Add(1)
-		go func(idx int, chunks []*Chunk) {
+		if m.slab[idx] == nil {
+			m.slab[idx] = util.MakeSlab(slab16Size, slab32Size)
+		}
+		go func(idx int, slab *util.Slab, chunks []*Chunk) {
 			defer func() { waitGroup.Done() }()
-			sliceMatches := []*Item{}
-			for _, chunk := range chunks {
-				matches := request.pattern.Match(chunk)
-				sliceMatches = append(sliceMatches, matches...)
+			count := 0
+			allMatches := make([][]*Result, len(chunks))
+			for idx, chunk := range chunks {
+				matches := request.pattern.Match(chunk, slab)
+				allMatches[idx] = matches
+				count += len(matches)
 				if cancelled.Get() {
 					return
 				}
 				countChan <- len(matches)
 			}
+			sliceMatches := make([]*Result, 0, count)
+			for _, matches := range allMatches {
+				sliceMatches = append(sliceMatches, matches...)
+			}
 			if m.sort {
 				if m.tac {
 					sort.Sort(ByRelevanceTac(sliceMatches))
@@ -171,7 +184,7 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 				}
 			}
 			resultChan <- partialResult{idx, sliceMatches}
-		}(idx, chunks)
+		}(idx, m.slab[idx], chunks)
 	}
 
 	wait := func() bool {
@@ -199,12 +212,12 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 		}
 	}
 
-	partialResults := make([][]*Item, numSlices)
-	for range slices {
+	partialResults := make([][]*Result, numSlices)
+	for _ = range slices {
 		partialResult := <-resultChan
 		partialResults[partialResult.index] = partialResult.matches
 	}
-	return NewMerger(partialResults, m.sort, m.tac), false
+	return NewMerger(pattern, partialResults, m.sort, m.tac), false
 }
 
 // Reset is called to interrupt/signal the ongoing search

src/merger.go

@@ -2,14 +2,15 @@ package fzf
 
 import "fmt"
 
-// Merger with no data
-var EmptyMerger = NewMerger([][]*Item{}, false, false)
+// EmptyMerger is a Merger with no data
+var EmptyMerger = NewMerger(nil, [][]*Result{}, false, false)
 
 // Merger holds a set of locally sorted lists of items and provides the view of
 // a single, globally-sorted list
 type Merger struct {
-	lists   [][]*Item
-	merged  []*Item
+	pattern *Pattern
+	lists   [][]*Result
+	merged  []*Result
 	chunks  *[]*Chunk
 	cursors []int
 	sorted  bool
@@ -22,9 +23,10 @@ type Merger struct {
 // original order
 func PassMerger(chunks *[]*Chunk, tac bool) *Merger {
 	mg := Merger{
-		chunks: chunks,
-		tac:    tac,
-		count:  0}
+		pattern: nil,
+		chunks:  chunks,
+		tac:     tac,
+		count:   0}
 
 	for _, chunk := range *mg.chunks {
 		mg.count += len(*chunk)
@@ -33,10 +35,11 @@ func PassMerger(chunks *[]*Chunk, tac bool) *Merger {
 }
 
 // NewMerger returns a new Merger
-func NewMerger(lists [][]*Item, sorted bool, tac bool) *Merger {
+func NewMerger(pattern *Pattern, lists [][]*Result, sorted bool, tac bool) *Merger {
 	mg := Merger{
+		pattern: pattern,
 		lists:   lists,
-		merged:  []*Item{},
+		merged:  []*Result{},
 		chunks:  nil,
 		cursors: make([]int, len(lists)),
 		sorted:  sorted,
@@ -55,14 +58,14 @@ func (mg *Merger) Length() int {
 	return mg.count
 }
 
-// Get returns the pointer to the Item object indexed by the given integer
-func (mg *Merger) Get(idx int) *Item {
+// Get returns the pointer to the Result object indexed by the given integer
+func (mg *Merger) Get(idx int) *Result {
 	if mg.chunks != nil {
 		if mg.tac {
 			idx = mg.count - idx - 1
 		}
 		chunk := (*mg.chunks)[idx/chunkSize]
-		return (*chunk)[idx%chunkSize]
+		return &Result{item: (*chunk)[idx%chunkSize]}
 	}
 
 	if mg.sorted {
@@ -82,13 +85,13 @@ func (mg *Merger) Get(idx int) *Item {
 	panic(fmt.Sprintf("Index out of bounds (unsorted, %d/%d)", idx, mg.count))
 }
 
-func (mg *Merger) Cacheable() bool {
+func (mg *Merger) cacheable() bool {
 	return mg.count < mergerCacheMax
 }
 
-func (mg *Merger) mergedGet(idx int) *Item {
+func (mg *Merger) mergedGet(idx int) *Result {
 	for i := len(mg.merged); i <= idx; i++ {
-		minRank := Rank{0, 0, 0}
+		minRank := minRank()
 		minIdx := -1
 		for listIdx, list := range mg.lists {
 			cursor := mg.cursors[listIdx]
@@ -97,7 +100,7 @@ func (mg *Merger) mergedGet(idx int) *Item {
 				continue
 			}
 			if cursor >= 0 {
-				rank := list[cursor].Rank(false)
+				rank := list[cursor].rank
 				if minIdx < 0 || compareRanks(rank, minRank, mg.tac) {
 					minRank = rank
 					minIdx = listIdx

src/merger_test.go

@@ -5,6 +5,8 @@ import (
 	"math/rand"
 	"sort"
 	"testing"
+
+	"github.com/junegunn/fzf/src/util"
 )
 
 func assert(t *testing.T, cond bool, msg ...string) {
@@ -13,18 +15,11 @@ func assert(t *testing.T, cond bool, msg ...string) {
 	}
 }
 
-func randItem() *Item {
+func randResult() *Result {
 	str := fmt.Sprintf("%d", rand.Uint32())
-	offsets := make([]Offset, rand.Int()%3)
-	for idx := range offsets {
-		sidx := int32(rand.Uint32() % 20)
-		eidx := sidx + int32(rand.Uint32()%20)
-		offsets[idx] = Offset{sidx, eidx}
-	}
-	return &Item{
-		text:    &str,
-		index:   rand.Uint32(),
-		offsets: offsets}
+	return &Result{
+		item: &Item{text: util.RunesToChars([]rune(str))},
+		rank: rank{index: rand.Int31()}}
 }
 
 func TestEmptyMerger(t *testing.T) {
@@ -34,23 +29,23 @@ func TestEmptyMerger(t *testing.T) {
 	assert(t, len(EmptyMerger.merged) == 0, "Invalid merged list")
 }
 
-func buildLists(partiallySorted bool) ([][]*Item, []*Item) {
+func buildLists(partiallySorted bool) ([][]*Result, []*Result) {
 	numLists := 4
-	lists := make([][]*Item, numLists)
+	lists := make([][]*Result, numLists)
 	cnt := 0
 	for i := 0; i < numLists; i++ {
-		numItems := rand.Int() % 20
-		cnt += numItems
-		lists[i] = make([]*Item, numItems)
-		for j := 0; j < numItems; j++ {
-			item := randItem()
+		numResults := rand.Int() % 20
+		cnt += numResults
+		lists[i] = make([]*Result, numResults)
+		for j := 0; j < numResults; j++ {
+			item := randResult()
 			lists[i][j] = item
 		}
 		if partiallySorted {
 			sort.Sort(ByRelevance(lists[i]))
 		}
 	}
-	items := []*Item{}
+	items := []*Result{}
 	for _, list := range lists {
 		items = append(items, list...)
 	}
@@ -62,7 +57,7 @@ func TestMergerUnsorted(t *testing.T) {
 	cnt := len(items)
 
 	// Not sorted: same order
-	mg := NewMerger(lists, false, false)
+	mg := NewMerger(nil, lists, false, false)
 	assert(t, cnt == mg.Length(), "Invalid Length")
 	for i := 0; i < cnt; i++ {
 		assert(t, items[i] == mg.Get(i), "Invalid Get")
@@ -74,7 +69,7 @@ func TestMergerSorted(t *testing.T) {
 	cnt := len(items)
 
 	// Sorted sorted order
-	mg := NewMerger(lists, true, false)
+	mg := NewMerger(nil, lists, true, false)
 	assert(t, cnt == mg.Length(), "Invalid Length")
 	sort.Sort(ByRelevance(items))
 	for i := 0; i < cnt; i++ {
@@ -84,7 +79,7 @@ func TestMergerSorted(t *testing.T) {
 	}
 
 	// Inverse order
-	mg2 := NewMerger(lists, true, false)
+	mg2 := NewMerger(nil, lists, true, false)
 	for i := cnt - 1; i >= 0; i-- {
 		if items[i] != mg2.Get(i) {
 			t.Error("Not sorted", items[i], mg2.Get(i))

src/options_test.go

@@ -1,17 +1,67 @@
 package fzf
 
 import (
+	"fmt"
 	"testing"
 
 	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/util"
 )
 
 func TestDelimiterRegex(t *testing.T) {
-	rx := delimiterRegexp("*")
-	tokens := rx.FindAllString("-*--*---**---", -1)
-	if tokens[0] != "-*" || tokens[1] != "--*" || tokens[2] != "---*" ||
-		tokens[3] != "*" || tokens[4] != "---" {
-		t.Errorf("%s %s %d", rx, tokens, len(tokens))
+	// Valid regex
+	delim := delimiterRegexp(".")
+	if delim.regex == nil || delim.str != nil {
+		t.Error(delim)
+	}
+	// Broken regex -> string
+	delim = delimiterRegexp("[0-9")
+	if delim.regex != nil || *delim.str != "[0-9" {
+		t.Error(delim)
+	}
+	// Valid regex
+	delim = delimiterRegexp("[0-9]")
+	if delim.regex.String() != "[0-9]" || delim.str != nil {
+		t.Error(delim)
+	}
+	// Tab character
+	delim = delimiterRegexp("\t")
+	if delim.regex != nil || *delim.str != "\t" {
+		t.Error(delim)
+	}
+	// Tab expression
+	delim = delimiterRegexp("\\t")
+	if delim.regex != nil || *delim.str != "\t" {
+		t.Error(delim)
+	}
+	// Tabs -> regex
+	delim = delimiterRegexp("\t+")
+	if delim.regex == nil || delim.str != nil {
+		t.Error(delim)
+	}
+}
+
+func TestDelimiterRegexString(t *testing.T) {
+	delim := delimiterRegexp("*")
+	tokens := Tokenize(util.RunesToChars([]rune("-*--*---**---")), delim)
+	if delim.regex != nil ||
+		tokens[0].text.ToString() != "-*" ||
+		tokens[1].text.ToString() != "--*" ||
+		tokens[2].text.ToString() != "---*" ||
+		tokens[3].text.ToString() != "*" ||
+		tokens[4].text.ToString() != "---" {
+		t.Errorf("%s %s %d", delim, tokens, len(tokens))
+	}
+}
+
+func TestDelimiterRegexRegex(t *testing.T) {
+	delim := delimiterRegexp("--\\*")
+	tokens := Tokenize(util.RunesToChars([]rune("-*--*---**---")), delim)
+	if delim.str != nil ||
+		tokens[0].text.ToString() != "-*--*" ||
+		tokens[1].text.ToString() != "---*" ||
+		tokens[2].text.ToString() != "*---" {
+		t.Errorf("%s %d", tokens, len(tokens))
 	}
 }
 
@@ -47,14 +97,16 @@ func TestIrrelevantNth(t *testing.T) {
 		opts := defaultOptions()
 		words := []string{"--nth", "..", "-x"}
 		parseOptions(opts, words)
+		postProcessOptions(opts)
 		if len(opts.Nth) != 0 {
 			t.Errorf("nth should be empty: %s", opts.Nth)
 		}
 	}
-	for _, words := range [][]string{[]string{"--nth", "..,3"}, []string{"--nth", "3,1.."}, []string{"--nth", "..-1,1"}} {
+	for _, words := range [][]string{[]string{"--nth", "..,3", "+x"}, []string{"--nth", "3,1..", "+x"}, []string{"--nth", "..-1,1", "+x"}} {
 		{
 			opts := defaultOptions()
 			parseOptions(opts, words)
+			postProcessOptions(opts)
 			if len(opts.Nth) != 0 {
 				t.Errorf("nth should be empty: %s", opts.Nth)
 			}
@@ -63,6 +115,7 @@ func TestIrrelevantNth(t *testing.T) {
 			opts := defaultOptions()
 			words = append(words, "-x")
 			parseOptions(opts, words)
+			postProcessOptions(opts)
 			if len(opts.Nth) != 2 {
 				t.Errorf("nth should not be empty: %s", opts.Nth)
 			}
@@ -71,61 +124,283 @@ func TestIrrelevantNth(t *testing.T) {
 }
 
 func TestParseKeys(t *testing.T) {
-	keys := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g", "")
-	check := func(key int, expected int) {
-		if key != expected {
-			t.Errorf("%d != %d", key, expected)
+	pairs := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g,ALT-enter,alt-SPACE", "")
+	check := func(i int, s string) {
+		if pairs[i] != s {
+			t.Errorf("%s != %s", pairs[i], s)
 		}
 	}
-	check(len(keys), 9)
-	check(keys[0], curses.CtrlZ)
-	check(keys[1], curses.AltZ)
-	check(keys[2], curses.F2)
-	check(keys[3], curses.AltZ+'@')
-	check(keys[4], curses.AltA)
-	check(keys[5], curses.AltZ+'!')
-	check(keys[6], curses.CtrlA+'g'-'a')
-	check(keys[7], curses.AltZ+'J')
-	check(keys[8], curses.AltZ+'g')
+	if len(pairs) != 11 {
+		t.Error(11)
+	}
+	check(curses.CtrlZ, "ctrl-z")
+	check(curses.AltZ, "alt-z")
+	check(curses.F2, "f2")
+	check(curses.AltZ+'@', "@")
+	check(curses.AltA, "Alt-a")
+	check(curses.AltZ+'!', "!")
+	check(curses.CtrlA+'g'-'a', "ctrl-G")
+	check(curses.AltZ+'J', "J")
+	check(curses.AltZ+'g', "g")
+	check(curses.AltEnter, "ALT-enter")
+	check(curses.AltSpace, "alt-SPACE")
+
+	// Synonyms
+	pairs = parseKeyChords("enter,Return,space,tab,btab,esc,up,down,left,right", "")
+	if len(pairs) != 9 {
+		t.Error(9)
+	}
+	check(curses.CtrlM, "Return")
+	check(curses.AltZ+' ', "space")
+	check(curses.Tab, "tab")
+	check(curses.BTab, "btab")
+	check(curses.ESC, "esc")
+	check(curses.Up, "up")
+	check(curses.Down, "down")
+	check(curses.Left, "left")
+	check(curses.Right, "right")
+
+	pairs = parseKeyChords("Tab,Ctrl-I,PgUp,page-up,pgdn,Page-Down,Home,End,Alt-BS,Alt-BSpace,shift-left,shift-right,btab,shift-tab,return,Enter,bspace", "")
+	if len(pairs) != 11 {
+		t.Error(11)
+	}
+	check(curses.Tab, "Ctrl-I")
+	check(curses.PgUp, "page-up")
+	check(curses.PgDn, "Page-Down")
+	check(curses.Home, "Home")
+	check(curses.End, "End")
+	check(curses.AltBS, "Alt-BSpace")
+	check(curses.SLeft, "shift-left")
+	check(curses.SRight, "shift-right")
+	check(curses.BTab, "shift-tab")
+	check(curses.CtrlM, "Enter")
+	check(curses.BSpace, "bspace")
 }
 
 func TestParseKeysWithComma(t *testing.T) {
-	check := func(key int, expected int) {
-		if key != expected {
-			t.Errorf("%d != %d", key, expected)
+	checkN := func(a int, b int) {
+		if a != b {
+			t.Errorf("%d != %d", a, b)
+		}
+	}
+	check := func(pairs map[int]string, i int, s string) {
+		if pairs[i] != s {
+			t.Errorf("%s != %s", pairs[i], s)
 		}
 	}
 
-	keys := parseKeyChords(",", "")
-	check(len(keys), 1)
-	check(keys[0], curses.AltZ+',')
+	pairs := parseKeyChords(",", "")
+	checkN(len(pairs), 1)
+	check(pairs, curses.AltZ+',', ",")
 
-	keys = parseKeyChords(",,a,b", "")
-	check(len(keys), 3)
-	check(keys[0], curses.AltZ+'a')
-	check(keys[1], curses.AltZ+'b')
-	check(keys[2], curses.AltZ+',')
+	pairs = parseKeyChords(",,a,b", "")
+	checkN(len(pairs), 3)
+	check(pairs, curses.AltZ+'a', "a")
+	check(pairs, curses.AltZ+'b', "b")
+	check(pairs, curses.AltZ+',', ",")
 
-	keys = parseKeyChords("a,b,,", "")
-	check(len(keys), 3)
-	check(keys[0], curses.AltZ+'a')
-	check(keys[1], curses.AltZ+'b')
-	check(keys[2], curses.AltZ+',')
+	pairs = parseKeyChords("a,b,,", "")
+	checkN(len(pairs), 3)
+	check(pairs, curses.AltZ+'a', "a")
+	check(pairs, curses.AltZ+'b', "b")
+	check(pairs, curses.AltZ+',', ",")
 
-	keys = parseKeyChords("a,,,b", "")
-	check(len(keys), 3)
-	check(keys[0], curses.AltZ+'a')
-	check(keys[1], curses.AltZ+'b')
-	check(keys[2], curses.AltZ+',')
+	pairs = parseKeyChords("a,,,b", "")
+	checkN(len(pairs), 3)
+	check(pairs, curses.AltZ+'a', "a")
+	check(pairs, curses.AltZ+'b', "b")
+	check(pairs, curses.AltZ+',', ",")
 
-	keys = parseKeyChords("a,,,b,c", "")
-	check(len(keys), 4)
-	check(keys[0], curses.AltZ+'a')
-	check(keys[1], curses.AltZ+'b')
-	check(keys[2], curses.AltZ+'c')
-	check(keys[3], curses.AltZ+',')
+	pairs = parseKeyChords("a,,,b,c", "")
+	checkN(len(pairs), 4)
+	check(pairs, curses.AltZ+'a', "a")
+	check(pairs, curses.AltZ+'b', "b")
+	check(pairs, curses.AltZ+'c', "c")
+	check(pairs, curses.AltZ+',', ",")
 
-	keys = parseKeyChords(",,,", "")
-	check(len(keys), 1)
-	check(keys[0], curses.AltZ+',')
+	pairs = parseKeyChords(",,,", "")
+	checkN(len(pairs), 1)
+	check(pairs, curses.AltZ+',', ",")
+}
+
+func TestBind(t *testing.T) {
+	check := func(action actionType, expected actionType) {
+		if action != expected {
+			t.Errorf("%d != %d", action, expected)
+		}
+	}
+	checkString := func(action string, expected string) {
+		if action != expected {
+			t.Errorf("%d != %d", action, expected)
+		}
+	}
+	keymap := defaultKeymap()
+	execmap := make(map[int]string)
+	check(actBeginningOfLine, keymap[curses.CtrlA])
+	parseKeymap(keymap, execmap,
+		"ctrl-a:kill-line,ctrl-b:toggle-sort,c:page-up,alt-z:page-down,"+
+			"f1:execute(ls {}),f2:execute/echo {}, {}, {}/,f3:execute[echo '({})'],f4:execute;less {};,"+
+			"alt-a:execute@echo (,),[,],/,:,;,%,{}@,alt-b:execute;echo (,),[,],/,:,@,%,{};"+
+			",,:abort,::accept,X:execute:\nfoobar,Y:execute(baz)")
+	check(actKillLine, keymap[curses.CtrlA])
+	check(actToggleSort, keymap[curses.CtrlB])
+	check(actPageUp, keymap[curses.AltZ+'c'])
+	check(actAbort, keymap[curses.AltZ+','])
+	check(actAccept, keymap[curses.AltZ+':'])
+	check(actPageDown, keymap[curses.AltZ])
+	check(actExecute, keymap[curses.F1])
+	check(actExecute, keymap[curses.F2])
+	check(actExecute, keymap[curses.F3])
+	check(actExecute, keymap[curses.F4])
+	checkString("ls {}", execmap[curses.F1])
+	checkString("echo {}, {}, {}", execmap[curses.F2])
+	checkString("echo '({})'", execmap[curses.F3])
+	checkString("less {}", execmap[curses.F4])
+	checkString("echo (,),[,],/,:,;,%,{}", execmap[curses.AltA])
+	checkString("echo (,),[,],/,:,@,%,{}", execmap[curses.AltB])
+	checkString("\nfoobar,Y:execute(baz)", execmap[curses.AltZ+'X'])
+
+	for idx, char := range []rune{'~', '!', '@', '#', '$', '%', '^', '&', '*', '|', ';', '/'} {
+		parseKeymap(keymap, execmap, fmt.Sprintf("%d:execute%cfoobar%c", idx%10, char, char))
+		checkString("foobar", execmap[curses.AltZ+int([]rune(fmt.Sprintf("%d", idx%10))[0])])
+	}
+
+	parseKeymap(keymap, execmap, "f1:abort")
+	check(actAbort, keymap[curses.F1])
+}
+
+func TestColorSpec(t *testing.T) {
+	theme := curses.Dark256
+	dark := parseTheme(theme, "dark")
+	if *dark != *theme {
+		t.Errorf("colors should be equivalent")
+	}
+	if dark == theme {
+		t.Errorf("point should not be equivalent")
+	}
+
+	light := parseTheme(theme, "dark,light")
+	if *light == *theme {
+		t.Errorf("should not be equivalent")
+	}
+	if *light != *curses.Light256 {
+		t.Errorf("colors should be equivalent")
+	}
+	if light == theme {
+		t.Errorf("point should not be equivalent")
+	}
+
+	customized := parseTheme(theme, "fg:231,bg:232")
+	if customized.Fg != 231 || customized.Bg != 232 {
+		t.Errorf("color not customized")
+	}
+	if *curses.Dark256 == *customized {
+		t.Errorf("colors should not be equivalent")
+	}
+	customized.Fg = curses.Dark256.Fg
+	customized.Bg = curses.Dark256.Bg
+	if *curses.Dark256 == *customized {
+		t.Errorf("colors should now be equivalent")
+	}
+
+	customized = parseTheme(theme, "fg:231,dark,bg:232")
+	if customized.Fg != curses.Dark256.Fg || customized.Bg == curses.Dark256.Bg {
+		t.Errorf("color not customized")
+	}
+	if customized.UseDefault {
+		t.Errorf("not using default colors")
+	}
+	if !curses.Dark256.UseDefault {
+		t.Errorf("using default colors")
+	}
+}
+
+func TestParseNilTheme(t *testing.T) {
+	var theme *curses.ColorTheme
+	newTheme := parseTheme(theme, "prompt:12")
+	if newTheme != nil {
+		t.Errorf("color is disabled. keep it that way.")
+	}
+	newTheme = parseTheme(theme, "prompt:12,dark,prompt:13")
+	if newTheme.Prompt != 13 {
+		t.Errorf("color should now be enabled and customized")
+	}
+}
+
+func TestDefaultCtrlNP(t *testing.T) {
+	check := func(words []string, key int, expected actionType) {
+		opts := defaultOptions()
+		parseOptions(opts, words)
+		postProcessOptions(opts)
+		if opts.Keymap[key] != expected {
+			t.Error()
+		}
+	}
+	check([]string{}, curses.CtrlN, actDown)
+	check([]string{}, curses.CtrlP, actUp)
+
+	check([]string{"--bind=ctrl-n:accept"}, curses.CtrlN, actAccept)
+	check([]string{"--bind=ctrl-p:accept"}, curses.CtrlP, actAccept)
+
+	hist := "--history=/tmp/fzf-history"
+	check([]string{hist}, curses.CtrlN, actNextHistory)
+	check([]string{hist}, curses.CtrlP, actPreviousHistory)
+
+	check([]string{hist, "--bind=ctrl-n:accept"}, curses.CtrlN, actAccept)
+	check([]string{hist, "--bind=ctrl-n:accept"}, curses.CtrlP, actPreviousHistory)
+
+	check([]string{hist, "--bind=ctrl-p:accept"}, curses.CtrlN, actNextHistory)
+	check([]string{hist, "--bind=ctrl-p:accept"}, curses.CtrlP, actAccept)
+}
+
+func optsFor(words ...string) *Options {
+	opts := defaultOptions()
+	parseOptions(opts, words)
+	postProcessOptions(opts)
+	return opts
+}
+
+func TestToggle(t *testing.T) {
+	opts := optsFor()
+	if opts.ToggleSort {
+		t.Error()
+	}
+
+	opts = optsFor("--bind=a:toggle-sort")
+	if !opts.ToggleSort {
+		t.Error()
+	}
+
+	opts = optsFor("--bind=a:toggle-sort", "--bind=a:up")
+	if opts.ToggleSort {
+		t.Error()
+	}
+}
+
+func TestPreviewOpts(t *testing.T) {
+	opts := optsFor()
+	if !(opts.Preview.command == "" &&
+		opts.Preview.hidden == false &&
+		opts.Preview.position == posRight &&
+		opts.Preview.size.percent == true &&
+		opts.Preview.size.size == 50) {
+		t.Error()
+	}
+	opts = optsFor("--preview", "cat {}", "--preview-window=left:15:hidden")
+	if !(opts.Preview.command == "cat {}" &&
+		opts.Preview.hidden == true &&
+		opts.Preview.position == posLeft &&
+		opts.Preview.size.percent == false &&
+		opts.Preview.size.size == 15+2) {
+		t.Error(opts.Preview)
+	}
+
+	opts = optsFor("--preview-window=left:15:hidden", "--preview-window=down")
+	if !(opts.Preview.command == "" &&
+		opts.Preview.hidden == false &&
+		opts.Preview.position == posDown &&
+		opts.Preview.size.percent == true &&
+		opts.Preview.size.size == 50) {
+		t.Error(opts.Preview)
+	}
 }

src/pattern.go

@@ -2,10 +2,10 @@ package fzf
 
 import (
 	"regexp"
-	"sort"
 	"strings"
 
 	"github.com/junegunn/fzf/src/algo"
+	"github.com/junegunn/fzf/src/util"
 )
 
 // fuzzy
@@ -24,6 +24,7 @@ const (
 	termExact
 	termPrefix
 	termSuffix
+	termEqual
 )
 
 type term struct {
@@ -34,16 +35,21 @@ type term struct {
 	origText      []rune
 }
 
+type termSet []term
+
 // Pattern represents search pattern
 type Pattern struct {
-	mode          Mode
+	fuzzy         bool
+	fuzzyAlgo     algo.Algo
+	extended      bool
 	caseSensitive bool
+	forward       bool
 	text          []rune
-	terms         []term
-	hasInvTerm    bool
-	delimiter     *regexp.Regexp
+	termSets      []termSet
+	cacheable     bool
+	delimiter     Delimiter
 	nth           []Range
-	procFun       map[termType]func(bool, *[]rune, []rune) (int, int)
+	procFun       map[termType]algo.Algo
 }
 
 var (
@@ -60,7 +66,7 @@ func init() {
 
 func clearPatternCache() {
 	// We can uniquely identify the pattern for a given string since
-	// mode and caseMode do not change while the program is running
+	// search mode and caseMode do not change while the program is running
 	_patternCache = make(map[string]*Pattern)
 }
 
@@ -69,14 +75,13 @@ func clearChunkCache() {
 }
 
 // BuildPattern builds Pattern object from the given arguments
-func BuildPattern(mode Mode, caseMode Case,
-	nth []Range, delimiter *regexp.Regexp, runes []rune) *Pattern {
+func BuildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case, forward bool,
+	cacheable bool, nth []Range, delimiter Delimiter, runes []rune) *Pattern {
 
 	var asString string
-	switch mode {
-	case ModeExtended, ModeExtendedExact:
+	if extended {
 		asString = strings.Trim(string(runes), " ")
-	default:
+	} else {
 		asString = string(runes)
 	}
 
@@ -85,18 +90,23 @@ func BuildPattern(mode Mode, caseMode Case,
 		return cached
 	}
 
-	caseSensitive, hasInvTerm := true, false
-	terms := []term{}
+	caseSensitive := true
+	termSets := []termSet{}
 
-	switch mode {
-	case ModeExtended, ModeExtendedExact:
-		terms = parseTerms(mode, caseMode, asString)
-		for _, term := range terms {
-			if term.inv {
-				hasInvTerm = true
+	if extended {
+		termSets = parseTerms(fuzzy, caseMode, asString)
+	Loop:
+		for _, termSet := range termSets {
+			for idx, term := range termSet {
+				// If the query contains inverse search terms or OR operators,
+				// we cannot cache the search scope
+				if !cacheable || idx > 0 || term.inv {
+					cacheable = false
+					break Loop
+				}
 			}
 		}
-	default:
+	} else {
 		lowerString := strings.ToLower(asString)
 		caseSensitive = caseMode == CaseRespect ||
 			caseMode == CaseSmart && lowerString != asString
@@ -106,16 +116,20 @@ func BuildPattern(mode Mode, caseMode Case,
 	}
 
 	ptr := &Pattern{
-		mode:          mode,
+		fuzzy:         fuzzy,
+		fuzzyAlgo:     fuzzyAlgo,
+		extended:      extended,
 		caseSensitive: caseSensitive,
+		forward:       forward,
 		text:          []rune(asString),
-		terms:         terms,
-		hasInvTerm:    hasInvTerm,
+		termSets:      termSets,
+		cacheable:     cacheable,
 		nth:           nth,
 		delimiter:     delimiter,
-		procFun:       make(map[termType]func(bool, *[]rune, []rune) (int, int))}
+		procFun:       make(map[termType]algo.Algo)}
 
-	ptr.procFun[termFuzzy] = algo.FuzzyMatch
+	ptr.procFun[termFuzzy] = fuzzyAlgo
+	ptr.procFun[termEqual] = algo.EqualMatch
 	ptr.procFun[termExact] = algo.ExactMatchNaive
 	ptr.procFun[termPrefix] = algo.PrefixMatch
 	ptr.procFun[termSuffix] = algo.SuffixMatch
@@ -124,9 +138,11 @@ func BuildPattern(mode Mode, caseMode Case,
 	return ptr
 }
 
-func parseTerms(mode Mode, caseMode Case, str string) []term {
+func parseTerms(fuzzy bool, caseMode Case, str string) []termSet {
 	tokens := _splitRegex.Split(str, -1)
-	terms := []term{}
+	sets := []termSet{}
+	set := termSet{}
+	switchSet := false
 	for _, token := range tokens {
 		typ, inv, text := termFuzzy, false, token
 		lowerText := strings.ToLower(text)
@@ -136,46 +152,68 @@ func parseTerms(mode Mode, caseMode Case, str string) []term {
 			text = lowerText
 		}
 		origText := []rune(text)
-		if mode == ModeExtendedExact {
+		if !fuzzy {
 			typ = termExact
 		}
 
+		if text == "|" {
+			switchSet = false
+			continue
+		}
+
 		if strings.HasPrefix(text, "!") {
 			inv = true
 			text = text[1:]
 		}
 
 		if strings.HasPrefix(text, "'") {
-			if mode == ModeExtended {
+			// Flip exactness
+			if fuzzy {
 				typ = termExact
 				text = text[1:]
+			} else {
+				typ = termFuzzy
+				text = text[1:]
 			}
 		} else if strings.HasPrefix(text, "^") {
-			typ = termPrefix
-			text = text[1:]
+			if strings.HasSuffix(text, "$") {
+				typ = termEqual
+				text = text[1 : len(text)-1]
+			} else {
+				typ = termPrefix
+				text = text[1:]
+			}
 		} else if strings.HasSuffix(text, "$") {
 			typ = termSuffix
 			text = text[:len(text)-1]
 		}
 
 		if len(text) > 0 {
-			terms = append(terms, term{
+			if switchSet {
+				sets = append(sets, set)
+				set = termSet{}
+			}
+			set = append(set, term{
 				typ:           typ,
 				inv:           inv,
 				text:          []rune(text),
 				caseSensitive: caseSensitive,
 				origText:      origText})
+			switchSet = true
 		}
 	}
-	return terms
+	if len(set) > 0 {
+		sets = append(sets, set)
+	}
+	return sets
 }
 
 // IsEmpty returns true if the pattern is effectively empty
 func (p *Pattern) IsEmpty() bool {
-	if p.mode == ModeFuzzy {
+	if !p.extended {
 		return len(p.text) == 0
 	}
-	return len(p.terms) == 0
+	return len(p.termSets) == 0
 }
 
 // AsString returns the search query in string type
@@ -185,32 +223,30 @@ func (p *Pattern) AsString() string {
 
 // CacheKey is used to build string to be used as the key of result cache
 func (p *Pattern) CacheKey() string {
-	if p.mode == ModeFuzzy {
+	if !p.extended {
 		return p.AsString()
 	}
 	cacheableTerms := []string{}
-	for _, term := range p.terms {
-		if term.inv {
-			continue
+	for _, termSet := range p.termSets {
+		if len(termSet) == 1 && !termSet[0].inv && (p.fuzzy || termSet[0].typ == termExact) {
+			cacheableTerms = append(cacheableTerms, string(termSet[0].origText))
 		}
-		cacheableTerms = append(cacheableTerms, string(term.origText))
 	}
 	return strings.Join(cacheableTerms, " ")
 }
 
 // Match returns the list of matches Items in the given Chunk
-func (p *Pattern) Match(chunk *Chunk) []*Item {
-	space := chunk
-
+func (p *Pattern) Match(chunk *Chunk, slab *util.Slab) []*Result {
 	// ChunkCache: Exact match
 	cacheKey := p.CacheKey()
-	if !p.hasInvTerm { // Because we're excluding Inv-term from cache key
+	if p.cacheable {
 		if cached, found := _cache.Find(chunk, cacheKey); found {
 			return cached
 		}
 	}
 
-	// ChunkCache: Prefix/suffix match
+	// Prefix/suffix cache
+	var space []*Result
 Loop:
 	for idx := 1; idx < len(cacheKey); idx++ {
 		// [---------| ] | [ |---------]
@@ -220,34 +256,33 @@ Loop:
 		suffix := cacheKey[idx:]
 		for _, substr := range [2]*string{&prefix, &suffix} {
 			if cached, found := _cache.Find(chunk, *substr); found {
-				cachedChunk := Chunk(cached)
-				space = &cachedChunk
+				space = cached
 				break Loop
 			}
 		}
 	}
 
-	matches := p.matchChunk(space)
+	matches := p.matchChunk(chunk, space, slab)
 
-	if !p.hasInvTerm {
+	if p.cacheable {
 		_cache.Add(chunk, cacheKey, matches)
 	}
 	return matches
 }
 
-func (p *Pattern) matchChunk(chunk *Chunk) []*Item {
-	matches := []*Item{}
-	if p.mode == ModeFuzzy {
+func (p *Pattern) matchChunk(chunk *Chunk, space []*Result, slab *util.Slab) []*Result {
+	matches := []*Result{}
+
+	if space == nil {
 		for _, item := range *chunk {
-			if sidx, eidx := p.fuzzyMatch(item); sidx >= 0 {
-				matches = append(matches,
-					dupItem(item, []Offset{Offset{int32(sidx), int32(eidx)}}))
+			if match, _, _ := p.MatchItem(item, false, slab); match != nil {
+				matches = append(matches, match)
 			}
 		}
 	} else {
-		for _, item := range *chunk {
-			if offsets := p.extendedMatch(item); len(offsets) == len(p.terms) {
-				matches = append(matches, dupItem(item, offsets))
+		for _, result := range space {
+			if match, _, _ := p.MatchItem(result.item, false, slab); match != nil {
+				matches = append(matches, match)
 			}
 		}
 	}
@@ -255,74 +290,105 @@ func (p *Pattern) matchChunk(chunk *Chunk) []*Item {
 }
 
 // MatchItem returns true if the Item is a match
-func (p *Pattern) MatchItem(item *Item) bool {
-	if p.mode == ModeFuzzy {
-		sidx, _ := p.fuzzyMatch(item)
-		return sidx >= 0
+func (p *Pattern) MatchItem(item *Item, withPos bool, slab *util.Slab) (*Result, []Offset, *[]int) {
+	if p.extended {
+		if offsets, bonus, trimLen, pos := p.extendedMatch(item, withPos, slab); len(offsets) == len(p.termSets) {
+			return buildResult(item, offsets, bonus, trimLen), offsets, pos
+		}
+		return nil, nil, nil
 	}
-	offsets := p.extendedMatch(item)
-	return len(offsets) == len(p.terms)
+	offset, bonus, trimLen, pos := p.basicMatch(item, withPos, slab)
+	if sidx := offset[0]; sidx >= 0 {
+		offsets := []Offset{offset}
+		return buildResult(item, offsets, bonus, trimLen), offsets, pos
+	}
+	return nil, nil, nil
 }
 
-func dupItem(item *Item, offsets []Offset) *Item {
-	sort.Sort(ByOrder(offsets))
-	return &Item{
-		text:        item.text,
-		origText:    item.origText,
-		transformed: item.transformed,
-		index:       item.index,
-		offsets:     offsets,
-		colors:      item.colors,
-		rank:        Rank{0, 0, item.index}}
-}
-
-func (p *Pattern) fuzzyMatch(item *Item) (int, int) {
+func (p *Pattern) basicMatch(item *Item, withPos bool, slab *util.Slab) (Offset, int, int, *[]int) {
 	input := p.prepareInput(item)
-	return p.iter(algo.FuzzyMatch, input, p.caseSensitive, p.text)
+	if p.fuzzy {
+		return p.iter(p.fuzzyAlgo, input, p.caseSensitive, p.forward, p.text, withPos, slab)
+	}
+	return p.iter(algo.ExactMatchNaive, input, p.caseSensitive, p.forward, p.text, withPos, slab)
 }
 
-func (p *Pattern) extendedMatch(item *Item) []Offset {
+func (p *Pattern) extendedMatch(item *Item, withPos bool, slab *util.Slab) ([]Offset, int, int, *[]int) {
 	input := p.prepareInput(item)
 	offsets := []Offset{}
-	for _, term := range p.terms {
-		pfun := p.procFun[term.typ]
-		if sidx, eidx := p.iter(pfun, input, term.caseSensitive, term.text); sidx >= 0 {
-			if term.inv {
+	var totalScore int
+	var totalTrimLen int
+	var allPos *[]int
+	if withPos {
+		allPos = &[]int{}
+	}
+	for _, termSet := range p.termSets {
+		var offset Offset
+		var currentScore int
+		var trimLen int
+		matched := false
+		for _, term := range termSet {
+			pfun := p.procFun[term.typ]
+			off, score, tLen, pos := p.iter(pfun, input, term.caseSensitive, p.forward, term.text, withPos, slab)
+			if sidx := off[0]; sidx >= 0 {
+				if term.inv {
+					continue
+				}
+				offset, currentScore, trimLen = off, score, tLen
+				matched = true
+				if withPos {
+					if pos != nil {
+						*allPos = append(*allPos, *pos...)
+					} else {
+						for idx := off[0]; idx < off[1]; idx++ {
+							*allPos = append(*allPos, int(idx))
+						}
+					}
+				}
 				break
+			} else if term.inv {
+				offset, currentScore, trimLen = Offset{0, 0}, 0, 0
+				matched = true
+				continue
 			}
-			offsets = append(offsets, Offset{int32(sidx), int32(eidx)})
-		} else if term.inv {
-			offsets = append(offsets, Offset{0, 0})
+		}
+		if matched {
+			offsets = append(offsets, offset)
+			totalScore += currentScore
+			totalTrimLen += trimLen
 		}
 	}
-	return offsets
+	return offsets, totalScore, totalTrimLen, allPos
 }
 
-func (p *Pattern) prepareInput(item *Item) *[]Token {
+func (p *Pattern) prepareInput(item *Item) []Token {
 	if item.transformed != nil {
 		return item.transformed
 	}
 
-	var ret *[]Token
-	if len(p.nth) > 0 {
+	var ret []Token
+	if len(p.nth) == 0 {
+		ret = []Token{Token{text: &item.text, prefixLength: 0, trimLength: int32(item.text.TrimLength())}}
+	} else {
 		tokens := Tokenize(item.text, p.delimiter)
 		ret = Transform(tokens, p.nth)
-	} else {
-		runes := []rune(*item.text)
-		trans := []Token{Token{text: &runes, prefixLength: 0}}
-		ret = &trans
 	}
 	item.transformed = ret
 	return ret
 }
 
-func (p *Pattern) iter(pfun func(bool, *[]rune, []rune) (int, int),
-	tokens *[]Token, caseSensitive bool, pattern []rune) (int, int) {
-	for _, part := range *tokens {
-		prefixLength := part.prefixLength
-		if sidx, eidx := pfun(caseSensitive, part.text, pattern); sidx >= 0 {
-			return sidx + prefixLength, eidx + prefixLength
+func (p *Pattern) iter(pfun algo.Algo, tokens []Token, caseSensitive bool, forward bool, pattern []rune, withPos bool, slab *util.Slab) (Offset, int, int, *[]int) {
+	for _, part := range tokens {
+		if res, pos := pfun(caseSensitive, forward, *part.text, pattern, withPos, slab); res.Start >= 0 {
+			sidx := int32(res.Start) + part.prefixLength
+			eidx := int32(res.End) + part.prefixLength
+			if pos != nil {
+				for idx := range *pos {
+					(*pos)[idx] += int(part.prefixLength)
+				}
+			}
+			return Offset{sidx, eidx}, res.Score, int(part.trimLength), pos
 		}
 	}
-	return -1, -1
+	return Offset{-1, -1}, 0, -1, nil
 }

src/pattern_test.go

@@ -1,26 +1,40 @@
 package fzf
 
 import (
+	"reflect"
 	"testing"
 
 	"github.com/junegunn/fzf/src/algo"
+	"github.com/junegunn/fzf/src/util"
 )
 
+var slab *util.Slab
+
+func init() {
+	slab = util.MakeSlab(slab16Size, slab32Size)
+}
+
 func TestParseTermsExtended(t *testing.T) {
-	terms := parseTerms(ModeExtended, CaseSmart,
-		"aaa 'bbb ^ccc ddd$ !eee !'fff !^ggg !hhh$")
-	if len(terms) != 8 ||
-		terms[0].typ != termFuzzy || terms[0].inv ||
-		terms[1].typ != termExact || terms[1].inv ||
-		terms[2].typ != termPrefix || terms[2].inv ||
-		terms[3].typ != termSuffix || terms[3].inv ||
-		terms[4].typ != termFuzzy || !terms[4].inv ||
-		terms[5].typ != termExact || !terms[5].inv ||
-		terms[6].typ != termPrefix || !terms[6].inv ||
-		terms[7].typ != termSuffix || !terms[7].inv {
+	terms := parseTerms(true, CaseSmart,
+		"| aaa 'bbb ^ccc ddd$ !eee !'fff !^ggg !hhh$ | ^iii$ ^xxx | 'yyy | | zzz$ | !ZZZ |")
+	if len(terms) != 9 ||
+		terms[0][0].typ != termFuzzy || terms[0][0].inv ||
+		terms[1][0].typ != termExact || terms[1][0].inv ||
+		terms[2][0].typ != termPrefix || terms[2][0].inv ||
+		terms[3][0].typ != termSuffix || terms[3][0].inv ||
+		terms[4][0].typ != termFuzzy || !terms[4][0].inv ||
+		terms[5][0].typ != termExact || !terms[5][0].inv ||
+		terms[6][0].typ != termPrefix || !terms[6][0].inv ||
+		terms[7][0].typ != termSuffix || !terms[7][0].inv ||
+		terms[7][1].typ != termEqual || terms[7][1].inv ||
+		terms[8][0].typ != termPrefix || terms[8][0].inv ||
+		terms[8][1].typ != termExact || terms[8][1].inv ||
+		terms[8][2].typ != termSuffix || terms[8][2].inv ||
+		terms[8][3].typ != termFuzzy || !terms[8][3].inv {
 		t.Errorf("%s", terms)
 	}
-	for idx, term := range terms {
+	for idx, termSet := range terms[:8] {
+		term := termSet[0]
 		if len(term.text) != 3 {
 			t.Errorf("%s", term)
 		}
@@ -28,26 +42,31 @@ func TestParseTermsExtended(t *testing.T) {
 			t.Errorf("%s", term)
 		}
 	}
+	for _, term := range terms[8] {
+		if len(term.origText) != 4 {
+			t.Errorf("%s", term)
+		}
+	}
 }
 
 func TestParseTermsExtendedExact(t *testing.T) {
-	terms := parseTerms(ModeExtendedExact, CaseSmart,
+	terms := parseTerms(false, CaseSmart,
 		"aaa 'bbb ^ccc ddd$ !eee !'fff !^ggg !hhh$")
 	if len(terms) != 8 ||
-		terms[0].typ != termExact || terms[0].inv || len(terms[0].text) != 3 ||
-		terms[1].typ != termExact || terms[1].inv || len(terms[1].text) != 4 ||
-		terms[2].typ != termPrefix || terms[2].inv || len(terms[2].text) != 3 ||
-		terms[3].typ != termSuffix || terms[3].inv || len(terms[3].text) != 3 ||
-		terms[4].typ != termExact || !terms[4].inv || len(terms[4].text) != 3 ||
-		terms[5].typ != termExact || !terms[5].inv || len(terms[5].text) != 4 ||
-		terms[6].typ != termPrefix || !terms[6].inv || len(terms[6].text) != 3 ||
-		terms[7].typ != termSuffix || !terms[7].inv || len(terms[7].text) != 3 {
+		terms[0][0].typ != termExact || terms[0][0].inv || len(terms[0][0].text) != 3 ||
+		terms[1][0].typ != termFuzzy || terms[1][0].inv || len(terms[1][0].text) != 3 ||
+		terms[2][0].typ != termPrefix || terms[2][0].inv || len(terms[2][0].text) != 3 ||
+		terms[3][0].typ != termSuffix || terms[3][0].inv || len(terms[3][0].text) != 3 ||
+		terms[4][0].typ != termExact || !terms[4][0].inv || len(terms[4][0].text) != 3 ||
+		terms[5][0].typ != termFuzzy || !terms[5][0].inv || len(terms[5][0].text) != 3 ||
+		terms[6][0].typ != termPrefix || !terms[6][0].inv || len(terms[6][0].text) != 3 ||
+		terms[7][0].typ != termSuffix || !terms[7][0].inv || len(terms[7][0].text) != 3 {
 		t.Errorf("%s", terms)
 	}
 }
 
 func TestParseTermsEmpty(t *testing.T) {
-	terms := parseTerms(ModeExtended, CaseSmart, "' $ ^ !' !^ !$")
+	terms := parseTerms(true, CaseSmart, "' $ ^ !' !^ !$")
 	if len(terms) != 0 {
 		t.Errorf("%s", terms)
 	}
@@ -56,29 +75,51 @@ func TestParseTermsEmpty(t *testing.T) {
 func TestExact(t *testing.T) {
 	defer clearPatternCache()
 	clearPatternCache()
-	pattern := BuildPattern(ModeExtended, CaseSmart,
-		[]Range{}, nil, []rune("'abc"))
-	runes := []rune("aabbcc abc")
-	sidx, eidx := algo.ExactMatchNaive(pattern.caseSensitive, &runes, pattern.terms[0].text)
-	if sidx != 7 || eidx != 10 {
-		t.Errorf("%s / %d / %d", pattern.terms, sidx, eidx)
+	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, true, true,
+		[]Range{}, Delimiter{}, []rune("'abc"))
+	res, pos := algo.ExactMatchNaive(
+		pattern.caseSensitive, pattern.forward, util.RunesToChars([]rune("aabbcc abc")), pattern.termSets[0][0].text, true, nil)
+	if res.Start != 7 || res.End != 10 {
+		t.Errorf("%s / %d / %d", pattern.termSets, res.Start, res.End)
 	}
+	if pos != nil {
+		t.Errorf("pos is expected to be nil")
+	}
+}
+
+func TestEqual(t *testing.T) {
+	defer clearPatternCache()
+	clearPatternCache()
+	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, true, true, []Range{}, Delimiter{}, []rune("^AbC$"))
+
+	match := func(str string, sidxExpected int, eidxExpected int) {
+		res, pos := algo.EqualMatch(
+			pattern.caseSensitive, pattern.forward, util.RunesToChars([]rune(str)), pattern.termSets[0][0].text, true, nil)
+		if res.Start != sidxExpected || res.End != eidxExpected {
+			t.Errorf("%s / %d / %d", pattern.termSets, res.Start, res.End)
+		}
+		if pos != nil {
+			t.Errorf("pos is expected to be nil")
+		}
+	}
+	match("ABC", -1, -1)
+	match("AbC", 0, 3)
 }
 
 func TestCaseSensitivity(t *testing.T) {
 	defer clearPatternCache()
 	clearPatternCache()
-	pat1 := BuildPattern(ModeFuzzy, CaseSmart, []Range{}, nil, []rune("abc"))
+	pat1 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, true, true, []Range{}, Delimiter{}, []rune("abc"))
 	clearPatternCache()
-	pat2 := BuildPattern(ModeFuzzy, CaseSmart, []Range{}, nil, []rune("Abc"))
+	pat2 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, true, true, []Range{}, Delimiter{}, []rune("Abc"))
 	clearPatternCache()
-	pat3 := BuildPattern(ModeFuzzy, CaseIgnore, []Range{}, nil, []rune("abc"))
+	pat3 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, true, true, []Range{}, Delimiter{}, []rune("abc"))
 	clearPatternCache()
-	pat4 := BuildPattern(ModeFuzzy, CaseIgnore, []Range{}, nil, []rune("Abc"))
+	pat4 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, true, true, []Range{}, Delimiter{}, []rune("Abc"))
 	clearPatternCache()
-	pat5 := BuildPattern(ModeFuzzy, CaseRespect, []Range{}, nil, []rune("abc"))
+	pat5 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, true, true, []Range{}, Delimiter{}, []rune("abc"))
 	clearPatternCache()
-	pat6 := BuildPattern(ModeFuzzy, CaseRespect, []Range{}, nil, []rune("Abc"))
+	pat6 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, true, true, []Range{}, Delimiter{}, []rune("Abc"))
 
 	if string(pat1.text) != "abc" || pat1.caseSensitive != false ||
 		string(pat2.text) != "Abc" || pat2.caseSensitive != true ||
@@ -91,26 +132,57 @@ func TestCaseSensitivity(t *testing.T) {
 }
 
 func TestOrigTextAndTransformed(t *testing.T) {
-	strptr := func(str string) *string {
-		return &str
-	}
-	pattern := BuildPattern(ModeExtended, CaseSmart, []Range{}, nil, []rune("jg"))
-	tokens := Tokenize(strptr("junegunn"), nil)
+	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, true, true, []Range{}, Delimiter{}, []rune("jg"))
+	tokens := Tokenize(util.RunesToChars([]rune("junegunn")), Delimiter{})
 	trans := Transform(tokens, []Range{Range{1, 1}})
 
-	for _, mode := range []Mode{ModeFuzzy, ModeExtended} {
+	origBytes := []byte("junegunn.choi")
+	for _, extended := range []bool{false, true} {
 		chunk := Chunk{
 			&Item{
-				text:        strptr("junegunn"),
-				origText:    strptr("junegunn.choi"),
+				text:        util.RunesToChars([]rune("junegunn")),
+				origText:    &origBytes,
 				transformed: trans},
 		}
-		pattern.mode = mode
-		matches := pattern.matchChunk(&chunk)
-		if *matches[0].text != "junegunn" || *matches[0].origText != "junegunn.choi" ||
-			matches[0].offsets[0][0] != 0 || matches[0].offsets[0][1] != 5 ||
-			matches[0].transformed != trans {
+		pattern.extended = extended
+		matches := pattern.matchChunk(&chunk, nil, slab) // No cache
+		if !(matches[0].item.text.ToString() == "junegunn" &&
+			string(*matches[0].item.origText) == "junegunn.choi" &&
+			reflect.DeepEqual(matches[0].item.transformed, trans)) {
 			t.Error("Invalid match result", matches)
 		}
+
+		match, offsets, pos := pattern.MatchItem(chunk[0], true, slab)
+		if !(match.item.text.ToString() == "junegunn" &&
+			string(*match.item.origText) == "junegunn.choi" &&
+			offsets[0][0] == 0 && offsets[0][1] == 5 &&
+			reflect.DeepEqual(match.item.transformed, trans)) {
+			t.Error("Invalid match result", match, offsets, extended)
+		}
+		if !((*pos)[0] == 4 && (*pos)[1] == 0) {
+			t.Error("Invalid pos array", *pos)
+		}
 	}
 }
+
+func TestCacheKey(t *testing.T) {
+	test := func(extended bool, patStr string, expected string, cacheable bool) {
+		pat := BuildPattern(true, algo.FuzzyMatchV2, extended, CaseSmart, true, true, []Range{}, Delimiter{}, []rune(patStr))
+		if pat.CacheKey() != expected {
+			t.Errorf("Expected: %s, actual: %s", expected, pat.CacheKey())
+		}
+		if pat.cacheable != cacheable {
+			t.Errorf("Expected: %s, actual: %s (%s)", cacheable, pat.cacheable, patStr)
+		}
+		clearPatternCache()
+	}
+	test(false, "foo !bar", "foo !bar", true)
+	test(false, "foo | bar !baz", "foo | bar !baz", true)
+	test(true, "foo  bar  baz", "foo bar baz", true)
+	test(true, "foo !bar", "foo", false)
+	test(true, "foo !bar   baz", "foo baz", false)
+	test(true, "foo | bar baz", "baz", false)
+	test(true, "foo | bar | baz", "", false)
+	test(true, "foo | bar !baz", "", false)
+	test(true, "| | | foo", "foo", true)
+}

src/reader.go

@@ -4,15 +4,15 @@ import (
 	"bufio"
 	"io"
 	"os"
-	"os/exec"
 
 	"github.com/junegunn/fzf/src/util"
 )
 
 // Reader reads from command or standard input
 type Reader struct {
-	pusher   func(string)
+	pusher   func([]byte) bool
 	eventBox *util.EventBox
+	delimNil bool
 }
 
 // ReadSource reads data from the default command or from standard input
@@ -30,10 +30,25 @@ func (r *Reader) ReadSource() {
 }
 
 func (r *Reader) feed(src io.Reader) {
-	if scanner := bufio.NewScanner(src); scanner != nil {
-		for scanner.Scan() {
-			r.pusher(scanner.Text())
-			r.eventBox.Set(EvtReadNew, nil)
+	delim := byte('\n')
+	if r.delimNil {
+		delim = '\000'
+	}
+	reader := bufio.NewReaderSize(src, readerBufferSize)
+	for {
+		// ReadBytes returns err != nil if and only if the returned data does not
+		// end in delim.
+		bytea, err := reader.ReadBytes(delim)
+		if len(bytea) > 0 {
+			if err == nil {
+				bytea = bytea[:len(bytea)-1]
+			}
+			if r.pusher(bytea) {
+				r.eventBox.Set(EvtReadNew, nil)
+			}
+		}
+		if err != nil {
+			break
 		}
 	}
 }
@@ -43,7 +58,7 @@ func (r *Reader) readFromStdin() {
 }
 
 func (r *Reader) readFromCommand(cmd string) {
-	listCommand := exec.Command("sh", "-c", cmd)
+	listCommand := util.ExecCommand(cmd)
 	out, err := listCommand.StdoutPipe()
 	if err != nil {
 		return

src/reader_test.go

@@ -10,7 +10,7 @@ func TestReadFromCommand(t *testing.T) {
 	strs := []string{}
 	eb := util.NewEventBox()
 	reader := Reader{
-		pusher:   func(s string) { strs = append(strs, s) },
+		pusher:   func(s []byte) bool { strs = append(strs, string(s)); return true },
 		eventBox: eb}
 
 	// Check EventBox

src/result.go

@@ -0,0 +1,240 @@
+package fzf
+
+import (
+	"math"
+	"sort"
+
+	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/util"
+)
+
+// Offset holds two 32-bit integers denoting the offsets of a matched substring
+type Offset [2]int32
+
+type colorOffset struct {
+	offset [2]int32
+	color  int
+	bold   bool
+	index  int32
+}
+
+type rank struct {
+	points [4]uint16
+	index  int32
+}
+
+type Result struct {
+	item *Item
+	rank rank
+}
+
+func buildResult(item *Item, offsets []Offset, score int, trimLen int) *Result {
+	if len(offsets) > 1 {
+		sort.Sort(ByOrder(offsets))
+	}
+
+	result := Result{item: item, rank: rank{index: item.index}}
+	numChars := item.text.Length()
+	minBegin := math.MaxUint16
+	maxEnd := 0
+	validOffsetFound := false
+	for _, offset := range offsets {
+		b, e := int(offset[0]), int(offset[1])
+		if b < e {
+			minBegin = util.Min(b, minBegin)
+			maxEnd = util.Max(e, maxEnd)
+			validOffsetFound = true
+		}
+	}
+
+	for idx, criterion := range sortCriteria {
+		val := uint16(math.MaxUint16)
+		switch criterion {
+		case byScore:
+			// Higher is better
+			val = math.MaxUint16 - util.AsUint16(score)
+		case byLength:
+			// If offsets is empty, trimLen will be 0, but we don't care
+			val = util.AsUint16(trimLen)
+		case byBegin:
+			if validOffsetFound {
+				whitePrefixLen := 0
+				for idx := 0; idx < numChars; idx++ {
+					r := item.text.Get(idx)
+					whitePrefixLen = idx
+					if idx == minBegin || r != ' ' && r != '\t' {
+						break
+					}
+				}
+				val = util.AsUint16(minBegin - whitePrefixLen)
+			}
+		case byEnd:
+			if validOffsetFound {
+				val = util.AsUint16(1 + numChars - maxEnd)
+			}
+		}
+		result.rank.points[idx] = val
+	}
+
+	return &result
+}
+
+// Sort criteria to use. Never changes once fzf is started.
+var sortCriteria []criterion
+
+// Index returns ordinal index of the Item
+func (result *Result) Index() int32 {
+	return result.item.index
+}
+
+func minRank() rank {
+	return rank{index: 0, points: [4]uint16{math.MaxUint16, 0, 0, 0}}
+}
+
+func (result *Result) colorOffsets(matchOffsets []Offset, color int, bold bool, current bool) []colorOffset {
+	itemColors := result.item.Colors()
+
+	if len(itemColors) == 0 {
+		var offsets []colorOffset
+		for _, off := range matchOffsets {
+
+			offsets = append(offsets, colorOffset{offset: [2]int32{off[0], off[1]}, color: color, bold: bold})
+		}
+		return offsets
+	}
+
+	// Find max column
+	var maxCol int32
+	for _, off := range matchOffsets {
+		if off[1] > maxCol {
+			maxCol = off[1]
+		}
+	}
+	for _, ansi := range itemColors {
+		if ansi.offset[1] > maxCol {
+			maxCol = ansi.offset[1]
+		}
+	}
+	cols := make([]int, maxCol)
+
+	for colorIndex, ansi := range itemColors {
+		for i := ansi.offset[0]; i < ansi.offset[1]; i++ {
+			cols[i] = colorIndex + 1 // XXX
+		}
+	}
+
+	for _, off := range matchOffsets {
+		for i := off[0]; i < off[1]; i++ {
+			cols[i] = -1
+		}
+	}
+
+	// sort.Sort(ByOrder(offsets))
+
+	// Merge offsets
+	// ------------  ----  --  ----
+	//   ++++++++      ++++++++++
+	// --++++++++--  --++++++++++---
+	curr := 0
+	start := 0
+	var colors []colorOffset
+	add := func(idx int) {
+		if curr != 0 && idx > start {
+			if curr == -1 {
+				colors = append(colors, colorOffset{
+					offset: [2]int32{int32(start), int32(idx)}, color: color, bold: bold})
+			} else {
+				ansi := itemColors[curr-1]
+				fg := ansi.color.fg
+				if fg == -1 {
+					if current {
+						fg = curses.CurrentFG
+					} else {
+						fg = curses.FG
+					}
+				}
+				bg := ansi.color.bg
+				if bg == -1 {
+					if current {
+						bg = curses.DarkBG
+					} else {
+						bg = curses.BG
+					}
+				}
+				colors = append(colors, colorOffset{
+					offset: [2]int32{int32(start), int32(idx)},
+					color:  curses.PairFor(fg, bg),
+					bold:   ansi.color.bold || bold})
+			}
+		}
+	}
+	for idx, col := range cols {
+		if col != curr {
+			add(idx)
+			start = idx
+			curr = col
+		}
+	}
+	add(int(maxCol))
+	return colors
+}
+
+// ByOrder is for sorting substring offsets
+type ByOrder []Offset
+
+func (a ByOrder) Len() int {
+	return len(a)
+}
+
+func (a ByOrder) Swap(i, j int) {
+	a[i], a[j] = a[j], a[i]
+}
+
+func (a ByOrder) Less(i, j int) bool {
+	ioff := a[i]
+	joff := a[j]
+	return (ioff[0] < joff[0]) || (ioff[0] == joff[0]) && (ioff[1] <= joff[1])
+}
+
+// ByRelevance is for sorting Items
+type ByRelevance []*Result
+
+func (a ByRelevance) Len() int {
+	return len(a)
+}
+
+func (a ByRelevance) Swap(i, j int) {
+	a[i], a[j] = a[j], a[i]
+}
+
+func (a ByRelevance) Less(i, j int) bool {
+	return compareRanks((*a[i]).rank, (*a[j]).rank, false)
+}
+
+// ByRelevanceTac is for sorting Items
+type ByRelevanceTac []*Result
+
+func (a ByRelevanceTac) Len() int {
+	return len(a)
+}
+
+func (a ByRelevanceTac) Swap(i, j int) {
+	a[i], a[j] = a[j], a[i]
+}
+
+func (a ByRelevanceTac) Less(i, j int) bool {
+	return compareRanks((*a[i]).rank, (*a[j]).rank, true)
+}
+
+func compareRanks(irank rank, jrank rank, tac bool) bool {
+	for idx := 0; idx < 4; idx++ {
+		left := irank.points[idx]
+		right := jrank.points[idx]
+		if left < right {
+			return true
+		} else if left > right {
+			return false
+		}
+	}
+	return (irank.index <= jrank.index) != tac
+}

src/result_test.go

@@ -0,0 +1,119 @@
+package fzf
+
+import (
+	"math"
+	"sort"
+	"testing"
+
+	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/util"
+)
+
+func TestOffsetSort(t *testing.T) {
+	offsets := []Offset{
+		Offset{3, 5}, Offset{2, 7},
+		Offset{1, 3}, Offset{2, 9}}
+	sort.Sort(ByOrder(offsets))
+
+	if offsets[0][0] != 1 || offsets[0][1] != 3 ||
+		offsets[1][0] != 2 || offsets[1][1] != 7 ||
+		offsets[2][0] != 2 || offsets[2][1] != 9 ||
+		offsets[3][0] != 3 || offsets[3][1] != 5 {
+		t.Error("Invalid order:", offsets)
+	}
+}
+
+func TestRankComparison(t *testing.T) {
+	rank := func(vals ...uint16) rank {
+		return rank{
+			points: [4]uint16{vals[0], vals[1], vals[2], vals[3]},
+			index:  int32(vals[4])}
+	}
+	if compareRanks(rank(3, 0, 0, 0, 5), rank(2, 0, 0, 0, 7), false) ||
+		!compareRanks(rank(3, 0, 0, 0, 5), rank(3, 0, 0, 0, 6), false) ||
+		!compareRanks(rank(1, 2, 0, 0, 3), rank(1, 3, 0, 0, 2), false) ||
+		!compareRanks(rank(0, 0, 0, 0, 0), rank(0, 0, 0, 0, 0), false) {
+		t.Error("Invalid order")
+	}
+
+	if compareRanks(rank(3, 0, 0, 0, 5), rank(2, 0, 0, 0, 7), true) ||
+		!compareRanks(rank(3, 0, 0, 0, 5), rank(3, 0, 0, 0, 6), false) ||
+		!compareRanks(rank(1, 2, 0, 0, 3), rank(1, 3, 0, 0, 2), true) ||
+		!compareRanks(rank(0, 0, 0, 0, 0), rank(0, 0, 0, 0, 0), false) {
+		t.Error("Invalid order (tac)")
+	}
+}
+
+// Match length, string length, index
+func TestResultRank(t *testing.T) {
+	// FIXME global
+	sortCriteria = []criterion{byScore, byLength}
+
+	strs := [][]rune{[]rune("foo"), []rune("foobar"), []rune("bar"), []rune("baz")}
+	item1 := buildResult(&Item{text: util.RunesToChars(strs[0]), index: 1}, []Offset{}, 2, 3)
+	if item1.rank.points[0] != math.MaxUint16-2 || // Bonus
+		item1.rank.points[1] != 3 || // Length
+		item1.rank.points[2] != 0 || // Unused
+		item1.rank.points[3] != 0 || // Unused
+		item1.item.index != 1 {
+		t.Error(item1.rank)
+	}
+	// Only differ in index
+	item2 := buildResult(&Item{text: util.RunesToChars(strs[0])}, []Offset{}, 2, 3)
+
+	items := []*Result{item1, item2}
+	sort.Sort(ByRelevance(items))
+	if items[0] != item2 || items[1] != item1 {
+		t.Error(items)
+	}
+
+	items = []*Result{item2, item1, item1, item2}
+	sort.Sort(ByRelevance(items))
+	if items[0] != item2 || items[1] != item2 ||
+		items[2] != item1 || items[3] != item1 {
+		t.Error(items, item1, item1.item.index, item2, item2.item.index)
+	}
+
+	// Sort by relevance
+	item3 := buildResult(&Item{index: 2}, []Offset{Offset{1, 3}, Offset{5, 7}}, 3, 0)
+	item4 := buildResult(&Item{index: 2}, []Offset{Offset{1, 2}, Offset{6, 7}}, 4, 0)
+	item5 := buildResult(&Item{index: 2}, []Offset{Offset{1, 3}, Offset{5, 7}}, 5, 0)
+	item6 := buildResult(&Item{index: 2}, []Offset{Offset{1, 2}, Offset{6, 7}}, 6, 0)
+	items = []*Result{item1, item2, item3, item4, item5, item6}
+	sort.Sort(ByRelevance(items))
+	if !(items[0] == item6 && items[1] == item5 &&
+		items[2] == item4 && items[3] == item3 &&
+		items[4] == item2 && items[5] == item1) {
+		t.Error(items, item1, item2, item3, item4, item5, item6)
+	}
+}
+
+func TestColorOffset(t *testing.T) {
+	// ------------ 20 ----  --  ----
+	//   ++++++++        ++++++++++
+	// --++++++++--    --++++++++++---
+
+	offsets := []Offset{Offset{5, 15}, Offset{25, 35}}
+	item := Result{
+		item: &Item{
+			colors: &[]ansiOffset{
+				ansiOffset{[2]int32{0, 20}, ansiState{1, 5, false}},
+				ansiOffset{[2]int32{22, 27}, ansiState{2, 6, true}},
+				ansiOffset{[2]int32{30, 32}, ansiState{3, 7, false}},
+				ansiOffset{[2]int32{33, 40}, ansiState{4, 8, true}}}}}
+	// [{[0 5] 9 false} {[5 15] 99 false} {[15 20] 9 false} {[22 25] 10 true} {[25 35] 99 false} {[35 40] 11 true}]
+
+	colors := item.colorOffsets(offsets, 99, false, true)
+	assert := func(idx int, b int32, e int32, c int, bold bool) {
+		o := colors[idx]
+		if o.offset[0] != b || o.offset[1] != e || o.color != c || o.bold != bold {
+			t.Error(o)
+		}
+	}
+	assert(0, 0, 5, curses.ColUser, false)
+	assert(1, 5, 15, 99, false)
+	assert(2, 15, 20, curses.ColUser, false)
+	assert(3, 22, 25, curses.ColUser+1, true)
+	assert(4, 25, 35, 99, false)
+	assert(5, 35, 40, curses.ColUser+2, true)
+}

src/tokenizer.go

@@ -18,8 +18,15 @@ type Range struct {
 
 // Token contains the tokenized part of the strings and its prefix length
 type Token struct {
-	text         *[]rune
-	prefixLength int
+	text         *util.Chars
+	prefixLength int32
+	trimLength   int32
+}
+
+// Delimiter for tokenizing the input
+type Delimiter struct {
+	regex *regexp.Regexp
+	str   *string
 }
 
 func newRange(begin int, end int) Range {
@@ -68,16 +75,14 @@ func ParseRange(str *string) (Range, bool) {
 	return newRange(n, n), true
 }
 
-func withPrefixLengths(tokens []string, begin int) []Token {
+func withPrefixLengths(tokens []util.Chars, begin int) []Token {
 	ret := make([]Token, len(tokens))
 
 	prefixLength := begin
 	for idx, token := range tokens {
-		// Need to define a new local variable instead of the reused token to take
-		// the pointer to it
-		runes := []rune(token)
-		ret[idx] = Token{text: &runes, prefixLength: prefixLength}
-		prefixLength += len([]rune(token))
+		// NOTE: &tokens[idx] instead of &tokens
+		ret[idx] = Token{&tokens[idx], int32(prefixLength), int32(token.TrimLength())}
+		prefixLength += token.Length()
 	}
 	return ret
 }
@@ -88,88 +93,104 @@ const (
 	awkWhite
 )
 
-func awkTokenizer(input *string) ([]string, int) {
+func awkTokenizer(input util.Chars) ([]util.Chars, int) {
 	// 9, 32
-	ret := []string{}
-	str := []rune{}
+	ret := []util.Chars{}
 	prefixLength := 0
 	state := awkNil
-	for _, r := range []rune(*input) {
+	numChars := input.Length()
+	begin := 0
+	end := 0
+	for idx := 0; idx < numChars; idx++ {
+		r := input.Get(idx)
 		white := r == 9 || r == 32
 		switch state {
 		case awkNil:
 			if white {
 				prefixLength++
 			} else {
-				state = awkBlack
-				str = append(str, r)
+				state, begin, end = awkBlack, idx, idx+1
 			}
 		case awkBlack:
-			str = append(str, r)
+			end = idx + 1
 			if white {
 				state = awkWhite
 			}
 		case awkWhite:
 			if white {
-				str = append(str, r)
+				end = idx + 1
 			} else {
-				ret = append(ret, string(str))
-				state = awkBlack
-				str = []rune{r}
+				ret = append(ret, input.Slice(begin, end))
+				state, begin, end = awkBlack, idx, idx+1
 			}
 		}
 	}
-	if len(str) > 0 {
-		ret = append(ret, string(str))
+	if begin < end {
+		ret = append(ret, input.Slice(begin, end))
 	}
 	return ret, prefixLength
 }
 
 // Tokenize tokenizes the given string with the delimiter
-func Tokenize(str *string, delimiter *regexp.Regexp) []Token {
-	if delimiter == nil {
+func Tokenize(text util.Chars, delimiter Delimiter) []Token {
+	if delimiter.str == nil && delimiter.regex == nil {
 		// AWK-style (\S+\s*)
-		tokens, prefixLength := awkTokenizer(str)
+		tokens, prefixLength := awkTokenizer(text)
 		return withPrefixLengths(tokens, prefixLength)
 	}
-	tokens := delimiter.FindAllString(*str, -1)
-	return withPrefixLengths(tokens, 0)
-}
 
-func joinTokens(tokens *[]Token) *string {
-	ret := ""
-	for _, token := range *tokens {
-		ret += string(*token.text)
+	if delimiter.str != nil {
+		return withPrefixLengths(text.Split(*delimiter.str), 0)
 	}
-	return &ret
+
+	// FIXME performance
+	var tokens []string
+	if delimiter.regex != nil {
+		str := text.ToString()
+		for len(str) > 0 {
+			loc := delimiter.regex.FindStringIndex(str)
+			if loc == nil {
+				loc = []int{0, len(str)}
+			}
+			last := util.Max(loc[1], 1)
+			tokens = append(tokens, str[:last])
+			str = str[last:]
+		}
+	}
+	asRunes := make([]util.Chars, len(tokens))
+	for i, token := range tokens {
+		asRunes[i] = util.RunesToChars([]rune(token))
+	}
+	return withPrefixLengths(asRunes, 0)
 }
 
-func joinTokensAsRunes(tokens *[]Token) *[]rune {
+func joinTokens(tokens []Token) []rune {
 	ret := []rune{}
-	for _, token := range *tokens {
-		ret = append(ret, *token.text...)
+	for _, token := range tokens {
+		ret = append(ret, token.text.ToRunes()...)
 	}
-	return &ret
+	return ret
 }
 
 // Transform is used to transform the input when --with-nth option is given
-func Transform(tokens []Token, withNth []Range) *[]Token {
+func Transform(tokens []Token, withNth []Range) []Token {
 	transTokens := make([]Token, len(withNth))
 	numTokens := len(tokens)
 	for idx, r := range withNth {
-		part := []rune{}
+		parts := []*util.Chars{}
 		minIdx := 0
 		if r.begin == r.end {
 			idx := r.begin
 			if idx == rangeEllipsis {
-				part = append(part, *joinTokensAsRunes(&tokens)...)
+				chars := util.RunesToChars(joinTokens(tokens))
+				parts = append(parts, &chars)
 			} else {
 				if idx < 0 {
 					idx += numTokens + 1
 				}
 				if idx >= 1 && idx <= numTokens {
 					minIdx = idx - 1
-					part = append(part, *tokens[idx-1].text...)
+					parts = append(parts, tokens[idx-1].text)
 				}
 			}
 		} else {
@@ -196,17 +217,32 @@ func Transform(tokens []Token, withNth []Range) *[]Token {
 			minIdx = util.Max(0, begin-1)
 			for idx := begin; idx <= end; idx++ {
 				if idx >= 1 && idx <= numTokens {
-					part = append(part, *tokens[idx-1].text...)
+					parts = append(parts, tokens[idx-1].text)
 				}
 			}
 		}
-		var prefixLength int
+		// Merge multiple parts
+		var merged util.Chars
+		switch len(parts) {
+		case 0:
+			merged = util.RunesToChars([]rune{})
+		case 1:
+			merged = *parts[0]
+		default:
+			runes := []rune{}
+			for _, part := range parts {
+				runes = append(runes, part.ToRunes()...)
+			}
+			merged = util.RunesToChars(runes)
+		}
+
+		var prefixLength int32
 		if minIdx < numTokens {
 			prefixLength = tokens[minIdx].prefixLength
 		} else {
 			prefixLength = 0
 		}
-		transTokens[idx] = Token{&part, prefixLength}
+		transTokens[idx] = Token{&merged, prefixLength, int32(merged.TrimLength())}
 	}
-	return &transTokens
+	return transTokens
 }

src/tokenizer_test.go

@@ -1,6 +1,10 @@
 package fzf
 
-import "testing"
+import (
+	"testing"
+
+	"github.com/junegunn/fzf/src/util"
+)
 
 func TestParseRange(t *testing.T) {
 	{
@@ -43,14 +47,23 @@ func TestParseRange(t *testing.T) {
 func TestTokenize(t *testing.T) {
 	// AWK-style
 	input := "  abc:  def:  ghi  "
-	tokens := Tokenize(&input, nil)
-	if string(*tokens[0].text) != "abc:  " || tokens[0].prefixLength != 2 {
+	tokens := Tokenize(util.RunesToChars([]rune(input)), Delimiter{})
+	if tokens[0].text.ToString() != "abc:  " || tokens[0].prefixLength != 2 || tokens[0].trimLength != 4 {
 		t.Errorf("%s", tokens)
 	}
 
 	// With delimiter
-	tokens = Tokenize(&input, delimiterRegexp(":"))
-	if string(*tokens[0].text) != "  abc:" || tokens[0].prefixLength != 0 {
+	tokens = Tokenize(util.RunesToChars([]rune(input)), delimiterRegexp(":"))
+	if tokens[0].text.ToString() != "  abc:" || tokens[0].prefixLength != 0 || tokens[0].trimLength != 4 {
+		t.Errorf("%s", tokens)
+	}
+
+	// With delimiter regex
+	tokens = Tokenize(util.RunesToChars([]rune(input)), delimiterRegexp("\\s+"))
+	if tokens[0].text.ToString() != "  " || tokens[0].prefixLength != 0 || tokens[0].trimLength != 0 ||
+		tokens[1].text.ToString() != "abc:  " || tokens[1].prefixLength != 2 || tokens[1].trimLength != 4 ||
+		tokens[2].text.ToString() != "def:  " || tokens[2].prefixLength != 8 || tokens[2].trimLength != 4 ||
+		tokens[3].text.ToString() != "ghi  " || tokens[3].prefixLength != 14 || tokens[3].trimLength != 3 {
 		t.Errorf("%s", tokens)
 	}
 }
@@ -58,39 +71,39 @@ func TestTokenize(t *testing.T) {
 func TestTransform(t *testing.T) {
 	input := "  abc:  def:  ghi:  jkl"
 	{
-		tokens := Tokenize(&input, nil)
+		tokens := Tokenize(util.RunesToChars([]rune(input)), Delimiter{})
 		{
 			ranges := splitNth("1,2,3")
 			tx := Transform(tokens, ranges)
-			if *joinTokens(tx) != "abc:  def:  ghi:  " {
-				t.Errorf("%s", *tx)
+			if string(joinTokens(tx)) != "abc:  def:  ghi:  " {
+				t.Errorf("%s", tx)
 			}
 		}
 		{
 			ranges := splitNth("1..2,3,2..,1")
 			tx := Transform(tokens, ranges)
-			if *joinTokens(tx) != "abc:  def:  ghi:  def:  ghi:  jklabc:  " ||
-				len(*tx) != 4 ||
-				string(*(*tx)[0].text) != "abc:  def:  " || (*tx)[0].prefixLength != 2 ||
-				string(*(*tx)[1].text) != "ghi:  " || (*tx)[1].prefixLength != 14 ||
-				string(*(*tx)[2].text) != "def:  ghi:  jkl" || (*tx)[2].prefixLength != 8 ||
-				string(*(*tx)[3].text) != "abc:  " || (*tx)[3].prefixLength != 2 {
-				t.Errorf("%s", *tx)
+			if string(joinTokens(tx)) != "abc:  def:  ghi:  def:  ghi:  jklabc:  " ||
+				len(tx) != 4 ||
+				tx[0].text.ToString() != "abc:  def:  " || tx[0].prefixLength != 2 ||
+				tx[1].text.ToString() != "ghi:  " || tx[1].prefixLength != 14 ||
+				tx[2].text.ToString() != "def:  ghi:  jkl" || tx[2].prefixLength != 8 ||
+				tx[3].text.ToString() != "abc:  " || tx[3].prefixLength != 2 {
+				t.Errorf("%s", tx)
 			}
 		}
 	}
 	{
-		tokens := Tokenize(&input, delimiterRegexp(":"))
+		tokens := Tokenize(util.RunesToChars([]rune(input)), delimiterRegexp(":"))
 		{
 			ranges := splitNth("1..2,3,2..,1")
 			tx := Transform(tokens, ranges)
-			if *joinTokens(tx) != "  abc:  def:  ghi:  def:  ghi:  jkl  abc:" ||
-				len(*tx) != 4 ||
-				string(*(*tx)[0].text) != "  abc:  def:" || (*tx)[0].prefixLength != 0 ||
-				string(*(*tx)[1].text) != "  ghi:" || (*tx)[1].prefixLength != 12 ||
-				string(*(*tx)[2].text) != "  def:  ghi:  jkl" || (*tx)[2].prefixLength != 6 ||
-				string(*(*tx)[3].text) != "  abc:" || (*tx)[3].prefixLength != 0 {
-				t.Errorf("%s", *tx)
+			if string(joinTokens(tx)) != "  abc:  def:  ghi:  def:  ghi:  jkl  abc:" ||
+				len(tx) != 4 ||
+				tx[0].text.ToString() != "  abc:  def:" || tx[0].prefixLength != 0 ||
+				tx[1].text.ToString() != "  ghi:" || tx[1].prefixLength != 12 ||
+				tx[2].text.ToString() != "  def:  ghi:  jkl" || tx[2].prefixLength != 6 ||
+				tx[3].text.ToString() != "  abc:" || tx[3].prefixLength != 0 {
+				t.Errorf("%s", tx)
 			}
 		}
 	}

src/update_assets.rb

@@ -2,6 +2,7 @@
 
 # http://www.rubydoc.info/github/rest-client/rest-client/RestClient
 require 'rest_client'
+require 'json'
 
 if ARGV.length < 3
   puts "usage: #$0 <token> <version> <files...>"

src/util/chars.go

@@ -0,0 +1,156 @@
+package util
+
+import (
+	"unicode/utf8"
+)
+
+type Chars struct {
+	runes []rune
+	bytes []byte
+}
+
+// ToChars converts byte array into rune array
+func ToChars(bytea []byte) Chars {
+	var runes []rune
+	ascii := true
+	numBytes := len(bytea)
+	for i := 0; i < numBytes; {
+		if bytea[i] < utf8.RuneSelf {
+			if !ascii {
+				runes = append(runes, rune(bytea[i]))
+			}
+			i++
+		} else {
+			if ascii {
+				ascii = false
+				runes = make([]rune, i, numBytes)
+				for j := 0; j < i; j++ {
+					runes[j] = rune(bytea[j])
+				}
+			}
+			r, sz := utf8.DecodeRune(bytea[i:])
+			i += sz
+			runes = append(runes, r)
+		}
+	}
+	if ascii {
+		return Chars{bytes: bytea}
+	}
+	return Chars{runes: runes}
+}
+
+func RunesToChars(runes []rune) Chars {
+	return Chars{runes: runes}
+}
+
+func (chars *Chars) Get(i int) rune {
+	if chars.runes != nil {
+		return chars.runes[i]
+	}
+	return rune(chars.bytes[i])
+}
+
+func (chars *Chars) Length() int {
+	if chars.runes != nil {
+		return len(chars.runes)
+	}
+	return len(chars.bytes)
+}
+
+// TrimLength returns the length after trimming leading and trailing whitespaces
+func (chars *Chars) TrimLength() int {
+	var i int
+	len := chars.Length()
+	for i = len - 1; i >= 0; i-- {
+		char := chars.Get(i)
+		if char != ' ' && char != '\t' {
+			break
+		}
+	}
+	// Completely empty
+	if i < 0 {
+		return 0
+	}
+
+	var j int
+	for j = 0; j < len; j++ {
+		char := chars.Get(j)
+		if char != ' ' && char != '\t' {
+			break
+		}
+	}
+	return i - j + 1
+}
+
+func (chars *Chars) TrailingWhitespaces() int {
+	whitespaces := 0
+	for i := chars.Length() - 1; i >= 0; i-- {
+		char := chars.Get(i)
+		if char != ' ' && char != '\t' {
+			break
+		}
+		whitespaces++
+	}
+	return whitespaces
+}
+
+func (chars *Chars) ToString() string {
+	if chars.runes != nil {
+		return string(chars.runes)
+	}
+	return string(chars.bytes)
+}
+
+func (chars *Chars) ToRunes() []rune {
+	if chars.runes != nil {
+		return chars.runes
+	}
+	runes := make([]rune, len(chars.bytes))
+	for idx, b := range chars.bytes {
+		runes[idx] = rune(b)
+	}
+	return runes
+}
+
+func (chars *Chars) Slice(b int, e int) Chars {
+	if chars.runes != nil {
+		return Chars{runes: chars.runes[b:e]}
+	}
+	return Chars{bytes: chars.bytes[b:e]}
+}
+
+func (chars *Chars) Split(delimiter string) []Chars {
+	delim := []rune(delimiter)
+	numChars := chars.Length()
+	numDelim := len(delim)
+	begin := 0
+	ret := make([]Chars, 0, 1)
+
+	for index := 0; index < numChars; {
+		if index+numDelim <= numChars {
+			match := true
+			for off, d := range delim {
+				if chars.Get(index+off) != d {
+					match = false
+					break
+				}
+			}
+			// Found the delimiter
+			if match {
+				incr := Max(numDelim, 1)
+				ret = append(ret, chars.Slice(begin, index+incr))
+				index += incr
+				begin = index
+				continue
+			}
+		} else {
+			// Impossible to find the delimiter in the remaining substring
+			break
+		}
+		index++
+	}
+	if begin < numChars || len(ret) == 0 {
+		ret = append(ret, chars.Slice(begin, numChars))
+	}
+	return ret
+}

src/util/chars_test.go

@@ -0,0 +1,82 @@
+package util
+
+import "testing"
+
+func TestToCharsNil(t *testing.T) {
+	bs := Chars{bytes: []byte{}}
+	if bs.bytes == nil || bs.runes != nil {
+		t.Error()
+	}
+	rs := RunesToChars([]rune{})
+	if rs.bytes != nil || rs.runes == nil {
+		t.Error()
+	}
+}
+
+func TestToCharsAscii(t *testing.T) {
+	chars := ToChars([]byte("foobar"))
+	if chars.ToString() != "foobar" || chars.runes != nil {
+		t.Error()
+	}
+}
+
+func TestCharsLength(t *testing.T) {
+	chars := ToChars([]byte("\tabc한글  "))
+	if chars.Length() != 8 || chars.TrimLength() != 5 {
+		t.Error()
+	}
+}
+
+func TestCharsToString(t *testing.T) {
+	text := "\tabc한글  "
+	chars := ToChars([]byte(text))
+	if chars.ToString() != text {
+		t.Error()
+	}
+}
+
+func TestTrimLength(t *testing.T) {
+	check := func(str string, exp int) {
+		chars := ToChars([]byte(str))
+		trimmed := chars.TrimLength()
+		if trimmed != exp {
+			t.Errorf("Invalid TrimLength result for '%s': %d (expected %d)",
+				str, trimmed, exp)
+		}
+	}
+	check("hello", 5)
+	check("hello ", 5)
+	check("hello  ", 5)
+	check(" hello", 5)
+	check("  hello", 5)
+	check(" hello ", 5)
+	check("  hello  ", 5)
+	check("h   o", 5)
+	check("  h   o  ", 5)
+	check("         ", 0)
+}
+
+func TestSplit(t *testing.T) {
+	check := func(str string, delim string, tokens ...string) {
+		input := ToChars([]byte(str))
+		result := input.Split(delim)
+		if len(result) != len(tokens) {
+			t.Errorf("Invalid Split result for '%s': %d tokens found (expected %d): %s",
+				str, len(result), len(tokens), result)
+		}
+		for idx, token := range tokens {
+			if result[idx].ToString() != token {
+				t.Errorf("Invalid Split result for '%s': %s (expected %s)",
+					str, result[idx].ToString(), token)
+			}
+		}
+	}
+	check("abc:def::", ":", "abc:", "def:", ":")
+	check("abc:def::", "-", "abc:def::")
+	check("abc", "", "a", "b", "c")
+	check("abc", "a", "a", "bc")
+	check("abc", "ab", "ab", "c")
+	check("abc", "abc", "abc")
+	check("abc", "abcd", "abc")
+	check("", "abcd", "")
+}

src/util/slab.go

@@ -0,0 +1,12 @@
+package util
+
+type Slab struct {
+	I16 []int16
+	I32 []int32
+}
+
+func MakeSlab(size16 int, size32 int) *Slab {
+	return &Slab{
+		I16: make([]int16, size16),
+		I32: make([]int32, size32)}
+}

src/util/util.go

@@ -4,24 +4,23 @@ package util
 import "C"
 
 import (
+	"math"
 	"os"
+	"os/exec"
 	"time"
 )
 
 // Max returns the largest integer
-func Max(first int, items ...int) int {
-	max := first
-	for _, item := range items {
-		if item > max {
-			max = item
-		}
+func Max(first int, second int) int {
+	if first >= second {
+		return first
 	}
-	return max
+	return second
 }
 
-// Max32 returns the smallest 32-bit integer
-func Min32(first int32, second int32) int32 {
-	if first <= second {
+// Max16 returns the largest integer
+func Max16(first int16, second int16) int16 {
+	if first >= second {
 		return first
 	}
 	return second
@@ -35,6 +34,22 @@ func Max32(first int32, second int32) int32 {
 	return second
 }
 
+// Min returns the smallest integer
+func Min(first int, second int) int {
+	if first <= second {
+		return first
+	}
+	return second
+}
+
+// Min32 returns the smallest 32-bit integer
+func Min32(first int32, second int32) int32 {
+	if first <= second {
+		return first
+	}
+	return second
+}
+
 // Constrain32 limits the given 32-bit integer with the upper and lower bounds
 func Constrain32(val int32, min int32, max int32) int32 {
 	if val < min {
@@ -57,6 +72,15 @@ func Constrain(val int, min int, max int) int {
 	return val
 }
 
+func AsUint16(val int) uint16 {
+	if val > math.MaxUint16 {
+		return math.MaxUint16
+	} else if val < 0 {
+		return 0
+	}
+	return uint16(val)
+}
+
 // DurWithin limits the given time.Duration with the upper and lower bounds
 func DurWithin(
 	val time.Duration, min time.Duration, max time.Duration) time.Duration {
@@ -69,22 +93,16 @@ func DurWithin(
 	return val
 }
 
-func Between(val int, min int, max int) bool {
-	return val >= min && val <= max
-}
-
 // IsTty returns true is stdin is a terminal
 func IsTty() bool {
 	return int(C.isatty(C.int(os.Stdin.Fd()))) != 0
 }
 
-func TrimRight(runes *[]rune) []rune {
-	var i int
-	for i = len(*runes) - 1; i >= 0; i-- {
-		char := (*runes)[i]
-		if char != ' ' && char != '\t' {
-			break
-		}
+// ExecCommand executes the given command with $SHELL
+func ExecCommand(command string) *exec.Cmd {
+	shell := os.Getenv("SHELL")
+	if len(shell) == 0 {
+		shell = "sh"
 	}
-	return (*runes)[0 : i+1]
+	return exec.Command(shell, "-c", command)
 }

src/util/util_test.go

@@ -3,7 +3,7 @@ package util
 import "testing"
 
 func TestMax(t *testing.T) {
-	if Max(-2, 5, 1, 4, 3) != 5 {
+	if Max(-2, 5) != 5 {
 		t.Error("Invalid result")
 	}
 }

test/fzf.vader

@@ -1,6 +1,8 @@
 Execute (Setup):
   let g:dir = fnamemodify(g:vader_file, ':p:h')
+  unlet! g:fzf_layout g:fzf_action g:fzf_history_dir
   Log 'Test directory: ' . g:dir
+  Save &acd
 
 Execute (fzf#run with dir option):
   let cwd = getcwd()
@@ -35,6 +37,112 @@ Execute (fzf#run with string source):
   let result = sort(fzf#run({ 'source': 'echo hi', 'options': '-f i' }))
   AssertEqual ['hi'], result
 
+Execute (fzf#run with dir option and noautochdir):
+  set noacd
+  let cwd = getcwd()
+  call fzf#run({'source': ['/foobar'], 'sink': 'e', 'dir': '/tmp', 'options': '-1'})
+  " No change in working directory
+  AssertEqual cwd, getcwd()
+
+  call fzf#run({'source': ['/foobar'], 'sink': 'tabe', 'dir': '/tmp', 'options': '-1'})
+  AssertEqual cwd, getcwd()
+  tabclose
+  AssertEqual cwd, getcwd()
+
+Execute (Incomplete fzf#run with dir option and autochdir):
+  set acd
+  let cwd = getcwd()
+  call fzf#run({'source': [], 'sink': 'e', 'dir': '/tmp', 'options': '-0'})
+  " No change in working directory even if &acd is set
+  AssertEqual cwd, getcwd()
+
+Execute (fzf#run with dir option and autochdir):
+  set acd
+  let cwd = getcwd()
+  call fzf#run({'source': ['/foobar'], 'sink': 'e', 'dir': '/tmp', 'options': '-1'})
+  " Working directory changed due to &acd
+  AssertEqual '/', getcwd()
+
+Execute (fzf#run with dir option and autochdir when final cwd is same as dir):
+  set acd
+  cd /tmp
+  call fzf#run({'source': ['/foobar'], 'sink': 'e', 'dir': '/', 'options': '-1'})
+  " Working directory changed due to &acd
+  AssertEqual '/', getcwd()
+
+Execute (fzf#wrap):
+  AssertThrows fzf#wrap({'foo': 'bar'})
+
+  let opts = fzf#wrap('foobar')
+  Log opts
+  AssertEqual '~40%', opts.down
+  Assert opts.options =~ '--expect='
+  Assert !has_key(opts, 'sink')
+  Assert has_key(opts, 'sink*')
+
+  let opts = fzf#wrap('foobar', {}, 0)
+  Log opts
+  AssertEqual '~40%', opts.down
+
+  let opts = fzf#wrap('foobar', {}, 1)
+  Log opts
+  Assert !has_key(opts, 'down')
+
+  let opts = fzf#wrap('foobar', {'down': '50%'})
+  Log opts
+  AssertEqual '50%', opts.down
+
+  let opts = fzf#wrap('foobar', {'down': '50%'}, 1)
+  Log opts
+  Assert !has_key(opts, 'down')
+
+  let opts = fzf#wrap('foobar', {'sink': 'e'})
+  Log opts
+  AssertEqual 'e', opts.sink
+  Assert !has_key(opts, 'sink*')
+
+  let opts = fzf#wrap('foobar', {'options': '--reverse'})
+  Log opts
+  Assert opts.options =~ '--expect='
+  Assert opts.options =~ '--reverse'
+
+  let g:fzf_layout = {'window': 'enew'}
+  let opts = fzf#wrap('foobar')
+  Log opts
+  AssertEqual 'enew', opts.window
+
+  let opts = fzf#wrap('foobar', {}, 1)
+  Log opts
+  Assert !has_key(opts, 'window')
+
+  let opts = fzf#wrap('foobar', {'right': '50%'})
+  Log opts
+  Assert !has_key(opts, 'window')
+  AssertEqual '50%', opts.right
+
+  let opts = fzf#wrap('foobar', {'right': '50%'}, 1)
+  Log opts
+  Assert !has_key(opts, 'window')
+  Assert !has_key(opts, 'right')
+
+  let g:fzf_action = {'a': 'tabe'}
+  let opts = fzf#wrap('foobar')
+  Log opts
+  Assert opts.options =~ '--expect=a'
+  Assert !has_key(opts, 'sink')
+  Assert has_key(opts, 'sink*')
+
+  let opts = fzf#wrap('foobar', {'sink': 'e'})
+  Log opts
+  AssertEqual 'e', opts.sink
+  Assert !has_key(opts, 'sink*')
+
+  let g:fzf_history_dir = '/tmp'
+  let opts = fzf#wrap('foobar', {'options': '--color light'})
+  Log opts
+  Assert opts.options =~ '--history /tmp/foobar'
+  Assert opts.options =~ '--color light'
+
 Execute (Cleanup):
   unlet g:dir
   Restore