fzf/README.md

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<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)
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===
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fzf is a general-purpose command-line fuzzy finder.
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![](https://raw.github.com/junegunn/i/master/fzf.gif)
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Pros
----
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- No dependencies
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- 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
- Batteries included
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- Vim/Neovim plugin, key bindings and fuzzy auto-completion
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Installation
------------
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fzf project consists of the following:
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- `fzf` executable
- `fzf-tmux` script for launching fzf in a tmux pane
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- Shell extensions
- Key bindings (`CTRL-T`, `CTRL-R`, and `ALT-C`) (bash, zsh, fish)
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- Fuzzy auto-completion (bash, zsh)
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- Vim/Neovim plugin
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You can [download fzf executable][bin] alone, but it's recommended that you
install the extra stuff using the attached install script.
[bin]: https://github.com/junegunn/fzf-bin/releases
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#### Using git (recommended)
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Clone this repository and run
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[install](https://github.com/junegunn/fzf/blob/master/install) script.
```sh
git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf
~/.fzf/install
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```
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#### Using Homebrew
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On OS X, you can use [Homebrew](http://brew.sh/) to install fzf.
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```sh
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brew install fzf
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# Install shell extensions
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/usr/local/opt/fzf/install
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```
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#### Install as Vim plugin
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Once you have cloned the repository, add the following line to your .vimrc.
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```vim
set rtp+=~/.fzf
```
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Or you can have [vim-plug](https://github.com/junegunn/vim-plug) manage fzf
(recommended):
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```vim
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
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```
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#### 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.
- git: `cd ~/.fzf && git pull && ./install`
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- brew: `brew update; brew reinstall fzf`
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- vim-plug: `:PlugUpdate fzf`
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Usage
-----
fzf will launch curses-based finder, read the list from STDIN, and write the
selected item to STDOUT.
```sh
find * -type f | fzf > selected
```
Without STDIN pipe, fzf will use find command to fetch the list of
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files excluding hidden ones. (You can override the default command with
`FZF_DEFAULT_COMMAND`)
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```sh
vim $(fzf)
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```
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#### Using the finder
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- `CTRL-J` / `CTRL-K` (or `CTRL-N` / `CTRL-P)` to move cursor up and down
- `Enter` key to select the item, `CTRL-C` / `CTRL-G` / `ESC` to exit
- On multi-select mode (`-m`), `TAB` and `Shift-TAB` to mark multiple items
- Emacs style key bindings
- Mouse: scroll, click, double-click; shift-click and shift-scroll on
multi-select mode
#### Search syntax
Unless otherwise specified, fzf starts in "extended-search mode" where you can
type in multiple search terms delimited by spaces. e.g. `^music .mp3$ sbtrkt
!rmx`
| Token | Match type | Description |
| -------- | -------------------- | -------------------------------- |
| `sbtrkt` | fuzzy-match | Items that match `sbtrkt` |
| `^music` | prefix-exact-match | Items that start with `music` |
| `.mp3$` | suffix-exact-match | Items that end with `.mp3` |
| `'wild` | exact-match (quoted) | Items that include `wild` |
| `!rmx` | inverse-fuzzy-match | Items that do not match `rmx` |
| `!'fire` | inverse-exact-match | Items that do not include `fire` |
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If you don't prefer fuzzy matching and do not wish to "quote" every word,
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start fzf with `-e` or `--exact` option. Note that when `--exact` is set,
`'`-prefix "unquotes" the term.
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A single bar character term acts as an OR operator. For example, the following
query matches entries that start with `core` and end with either `go`, `rb`,
or `py`.
```
^core go$ | rb$ | py$
```
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#### Environment variables
- `FZF_DEFAULT_COMMAND`
- Default command to use when input is tty
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- e.g. `export FZF_DEFAULT_COMMAND='ag -g ""'`
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- `FZF_DEFAULT_OPTS`
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- Default options
- e.g. `export FZF_DEFAULT_OPTS="--reverse --inline-info"`
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Examples
--------
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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.
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`fzf-tmux` script
-----------------
[fzf-tmux](bin/fzf-tmux) is a bash script that opens fzf in a tmux pane.
```sh
# usage: fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
# (-[udlr]: up/down/left/right)
# select git branches in horizontal split below (15 lines)
git branch | fzf-tmux -d 15
# select multiple words in vertical split on the left (20% of screen width)
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.
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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
- `CTRL-R` - Paste the selected command from history onto the command line
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- Sort is disabled by default to respect chronological ordering
- Press `CTRL-R` again to toggle sort
- `ALT-C` - cd into the selected directory
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- Set `FZF_ALT_C_COMMAND` to override the default command
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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.
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Fuzzy completion for bash and zsh
---------------------------------
#### Files and directories
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Fuzzy completion for files and directories can be triggered if the word before
the cursor ends with the trigger sequence which is by default `**`.
- `COMMAND [DIRECTORY/][FUZZY_PATTERN]**<TAB>`
```sh
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# Files under current directory
# - You can select multiple items with TAB key
vim **<TAB>
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# Files under parent directory
vim ../**<TAB>
# Files under parent directory that match `fzf`
vim ../fzf**<TAB>
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# Files under your home directory
vim ~/**<TAB>
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# Directories under current directory (single-selection)
cd **<TAB>
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# Directories under ~/github that match `fzf`
cd ~/github/fzf**<TAB>
```
#### Process IDs
Fuzzy completion for PIDs is provided for kill command. In this case
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there is no trigger sequence, just press tab key after kill command.
```sh
# Can select multiple processes with <TAB> or <Shift-TAB> keys
kill -9 <TAB>
```
#### Host names
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For ssh and telnet commands, fuzzy completion for host names is provided. The
names are extracted from /etc/hosts and ~/.ssh/config.
```sh
ssh **<TAB>
telnet **<TAB>
```
#### Environment variables / Aliases
```sh
unset **<TAB>
export **<TAB>
unalias **<TAB>
```
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#### Settings
```sh
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# Use ~~ as the trigger sequence instead of the default **
export FZF_COMPLETION_TRIGGER='~~'
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# 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.
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_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
```
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Usage as Vim plugin
-------------------
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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.)
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#### `:FZF[!]`
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If you have set up fzf for Vim, `:FZF` command will be added.
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```vim
" Look for files under current directory
:FZF
" Look for files under your home directory
:FZF ~
" With options
:FZF --no-sort -m /tmp
" Bang version starts in fullscreen instead of using tmux pane or Neovim split
:FZF!
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```
Similarly to [ctrlp.vim](https://github.com/kien/ctrlp.vim), use enter key,
`CTRL-T`, `CTRL-X` or `CTRL-V` to open selected files in the current window,
in new tabs, in horizontal splits, or in vertical splits respectively.
Note that the environment variables `FZF_DEFAULT_COMMAND` and
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`FZF_DEFAULT_OPTS` also apply here. Refer to [the wiki page][fzf-config] for
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customization.
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[fzf-config]: https://github.com/junegunn/fzf/wiki/Configuring-FZF-command-(vim)
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#### `fzf#run([options])`
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For more advanced uses, you can use `fzf#run()` function with the following
options.
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| Option name | Type | Description |
| -------------------------- | ------------- | ---------------------------------------------------------------- |
| `source` | string | External command to generate input to fzf (e.g. `find .`) |
| `source` | list | Vim list as input to fzf |
| `sink` | string | Vim command to handle the selected item (e.g. `e`, `tabe`) |
| `sink` | funcref | Reference to function to process each selected item |
| `sink*` | funcref | Similar to `sink`, but takes the list of output lines at once |
| `options` | string | Options to fzf |
| `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 (GVim only) |
| `launcher` | funcref | Function for generating `launcher` string (GVim only) |
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Examples can be found on [the wiki
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page](https://github.com/junegunn/fzf/wiki/Examples-(vim)).
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Tips
----
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#### Rendering issues
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If you have any rendering issues, check the following:
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1. Make sure `$TERM` is correctly set. fzf will use 256-color only if it
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contains `256` (e.g. `xterm-256color`)
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2. If you're on screen or tmux, `$TERM` should be either `screen` or
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`screen-256color`
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3. Some terminal emulators (e.g. mintty) have problem displaying default
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background color and make some text unable to read. In that case, try
`--black` option. And if it solves your problem, I recommend including it
in `FZF_DEFAULT_OPTS` for further convenience.
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4. If you still have problem, try `--no-256` option or even `--no-color`.
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#### Respecting `.gitignore`, `.hgignore`, and `svn:ignore`
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[ag](https://github.com/ggreer/the_silver_searcher) or
[pt](https://github.com/monochromegane/the_platinum_searcher) will do the
filtering:
```sh
# Feed the output of ag into fzf
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ag -g "" | fzf
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# Setting ag as the default source for fzf
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export FZF_DEFAULT_COMMAND='ag -g ""'
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# Now fzf (w/o pipe) will use ag instead of find
fzf
# To apply the command to CTRL-T as well
export FZF_CTRL_T_COMMAND="$FZF_DEFAULT_COMMAND"
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```
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#### `git ls-tree` for fast traversal
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If you're running fzf in a large git repository, `git ls-tree` can boost up the
speed of the traversal.
```sh
export FZF_DEFAULT_COMMAND='
(git ls-tree -r --name-only HEAD ||
find . -path "*/\.*" -prune -o -type f -print -o -type l -print |
sed s/^..//) 2> /dev/null'
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```
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#### Fish shell
It's [a known bug of fish](https://github.com/fish-shell/fish-shell/issues/1362)
that it doesn't allow reading from STDIN in command substitution, which means
simple `vim (fzf)` won't work as expected. The workaround is to store the result
of fzf to a temporary file.
```sh
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fzf > $TMPDIR/fzf.result; and vim (cat $TMPDIR/fzf.result)
```
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License
-------
[MIT](LICENSE)
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Author
------
Junegunn Choi