fzf/README.md

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fzf - Fuzzy finder for your shell
=================================
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fzf is a general-purpose fuzzy finder for your shell.
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![](https://raw.github.com/junegunn/i/master/fzf.gif)
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It was heavily inspired by [ctrlp.vim](https://github.com/kien/ctrlp.vim) and
the likes.
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Requirements
------------
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fzf requires Ruby (>= 1.8.5).
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Installation
------------
Clone this repository and run
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[install](https://github.com/junegunn/fzf/blob/master/install) script.
```sh
git clone https://github.com/junegunn/fzf.git ~/.fzf
~/.fzf/install
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```
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In case you don't have git installed:
```sh
mkdir -p ~/.fzf
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curl -L https://github.com/junegunn/fzf/archive/master.tar.gz |
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tar xz --strip-components 1 -C ~/.fzf
~/.fzf/install
```
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The script will setup:
- `fzf` function (bash, zsh, fish)
- Key bindings (`CTRL-T`, `CTRL-R`, and `ALT-C`) (bash, zsh, fish)
- Fuzzy auto-completion (bash)
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If you don't use any of the aforementioned shells, you have to manually place
fzf executable in a directory included in `$PATH`. Key bindings and
auto-completion will not be available in that case.
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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 may use any Vim plugin manager, such as
[vim-plug](https://github.com/junegunn/vim-plug).
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Usage
-----
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```
usage: fzf [options]
Search
-x, --extended Extended-search mode
-e, --extended-exact Extended-search mode (exact match)
-i Case-insensitive match (default: smart-case match)
+i Case-sensitive match
-n, --nth=[-]N[,..] Comma-separated list of field indexes for limiting
search scope (positive or negative integers)
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-d, --delimiter=STR Field delimiter regex for --nth (default: AWK-style)
Search result
-s, --sort=MAX Maximum number of matched items to sort (default: 1000)
+s, --no-sort Do not sort the result. Keep the sequence unchanged.
Interface
-m, --multi Enable multi-select with tab/shift-tab
--no-mouse Disable mouse
+c, --no-color Disable colors
+2, --no-256 Disable 256-color
--black Use black background
--reverse Reverse orientation
Scripting
-q, --query=STR Start the finder with the given query
-1, --select-1 Automatically select the only match
-0, --exit-0 Exit immediately when there's no match
-f, --filter=STR Filter mode. Do not start interactive finder.
Environment variables
FZF_DEFAULT_COMMAND Default command to use when input is tty
FZF_DEFAULT_OPTS Defaults options. (e.g. "-x -m --sort 10000")
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```
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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 $(fzf)
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```
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If you want to preserve the exact sequence of the input, provide `--no-sort` (or
`+s`) option.
```sh
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history | fzf +s
```
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### Keys
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Use CTRL-J and CTRL-K (or CTRL-N and CTRL-P) to change the selection, press
enter key to select the item. CTRL-C, CTRL-G, or ESC will terminate the finder.
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The following readline key bindings should also work as expected.
- CTRL-A / CTRL-E
- CTRL-B / CTRL-F
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- CTRL-W / CTRL-U / CTRL-Y
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- ALT-B / ALT-F
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If you enable multi-select mode with `-m` option, you can select multiple items
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with TAB or Shift-TAB key.
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You can also use mouse. Double-click on an item to select it or shift-click (or
ctrl-click) to select multiple items. Use mouse wheel to move the cursor up and
down.
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### Extended-search mode
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With `-x` or `--extended` option, fzf will start in "extended-search mode".
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In this mode, you can specify multiple patterns delimited by spaces,
such as: `^music .mp3$ sbtrkt !rmx`
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| Token | Description | Match type |
| -------- | -------------------------------- | -------------------- |
| `^music` | Items that start with `music` | prefix-exact-match |
| `.mp3$` | Items that end with `.mp3` | suffix-exact-match |
| `sbtrkt` | Items that match `sbtrkt` | fuzzy-match |
| `!rmx` | Items that do not match `rmx` | inverse-fuzzy-match |
| `'wild` | Items that include `wild` | exact-match (quoted) |
| `!'fire` | Items that do not include `fire` | inverse-exact-match |
If you don't need fuzzy matching and do not wish to "quote" every word, start
fzf with `-e` or `--extended-exact` option.
Useful examples
---------------
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```sh
# fe [FUZZY PATTERN] - Open the selected file with the default editor
# - Bypass fuzzy finder if there's only one match (--select-1)
# - Exit if there's no match (--exit-0)
fe() {
local file
file=$(fzf --query="$1" --select-1 --exit-0)
[ -n "$file" ] && ${EDITOR:-vim} "$file"
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}
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# fd - cd to selected directory
fd() {
local dir
dir=$(find ${1:-*} -path '*/\.*' -prune \
-o -type d -print 2> /dev/null | fzf +m) &&
cd "$dir"
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}
# fda - including hidden directories
fda() {
local dir
dir=$(find ${1:-.} -type d 2> /dev/null | fzf +m) && cd "$dir"
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}
# fh - repeat history
fh() {
eval $(([ -n "$ZSH_NAME" ] && fc -l 1 || history) | fzf +s | sed 's/ *[0-9]* *//')
}
# fkill - kill process
fkill() {
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ps -ef | sed 1d | fzf -m | awk '{print $2}' | xargs kill -${1:-9}
}
# fbr - checkout git branch
fbr() {
local branches branch
branches=$(git branch) &&
branch=$(echo "$branches" | fzf +s +m) &&
git checkout $(echo "$branch" | sed "s/.* //")
}
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# fco - checkout git commit
fco() {
local commits commit
commits=$(git log --pretty=oneline --abbrev-commit --reverse) &&
commit=$(echo "$commits" | fzf +s +m -e) &&
git checkout $(echo "$commit" | sed "s/ .*//")
}
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# ftags - search ctags
ftags() {
local line
[ -e tags ] &&
line=$(
awk 'BEGIN { FS="\t" } !/^!/ {print toupper($4)"\t"$1"\t"$2"\t"$3}' tags |
cut -c1-80 | fzf --nth=1,2
) && $EDITOR $(cut -f3 <<< "$line") -c "set nocst" \
-c "silent tag $(cut -f2 <<< "$line")"
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}
```
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For more examples, see [the wiki
page](https://github.com/junegunn/fzf/wiki/examples).
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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 file path(s) into the command line
- `CTRL-R` - Paste the selected command from history into the command line
- `ALT-C` - cd into the selected directory
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If you're on a tmux session, `CTRL-T` will launch fzf in a new split-window. You
may disable this tmux integration by setting `FZF_TMUX` to 0, or change the
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height of the window 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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If you want to customize the key bindings, consider editing the
installer-generated source code: `~/.fzf.bash`, `~/.fzf.zsh`, and
`~/.config/fish/functions/fzf_key_bindings.fish`.
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Auto-completion
---------------
Disclaimer: *Auto-completion feature is currently experimental, it can change
over time*
### bash
#### 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>
```
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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'
```
### zsh
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TODO :smiley:
(Pull requests are appreciated.)
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Usage as Vim plugin
-------------------
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(fzf is a command-line utility, naturally it is only accessible in terminal Vim)
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### `:FZF[!]`
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
```
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Note that the environment variables `FZF_DEFAULT_COMMAND` and `FZF_DEFAULT_OPTS`
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also apply here.
If you're on a tmux session, `:FZF` will launch fzf in a new split-window whose
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height can be adjusted with `g:fzf_tmux_height` (default: '40%'). However, the
bang version (`:FZF!`) will always start in fullscreen.
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### `fzf#run([options])`
For more advanced uses, you can call `fzf#run()` function which returns the list
of the selected items.
`fzf#run()` may take an options-dictionary:
| Option name | Type | Description |
| ------------- | ------------- | ------------------------------------------------------------------ |
| `source` | string | External command to generate input to fzf (e.g. `find .`) |
| `source` | list | Vim list as input to fzf |
| `sink` | string | Vim command to handle the selected item (e.g. `e`, `tabe`) |
| `sink` | funcref | Reference to function to process each selected item |
| `options` | string | Options to fzf |
| `dir` | string | Working directory |
| `tmux_width` | number/string | Use tmux vertical split with the given height (e.g. `20`, `50%`) |
| `tmux_height` | number/string | Use tmux horizontal split with the given height (e.g. `20`, `50%`) |
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#### Examples
If `sink` option is not given, `fzf#run` will simply return the list.
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```vim
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let items = fzf#run({ 'options': '-m +c', 'dir': '~', 'source': 'ls' })
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```
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But if `sink` is given as a string, the command will be executed for each
selected item.
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```vim
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" Each selected item will be opened in a new tab
let items = fzf#run({ 'sink': 'tabe', 'options': '-m +c', 'dir': '~', 'source': 'ls' })
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```
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We can also use a Vim list as the source as follows:
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```vim
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" Choose a color scheme with fzf
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nnoremap <silent> <Leader>C :call fzf#run({
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\ 'source':
\ map(split(globpath(&rtp, "colors/*.vim"), "\n"),
\ "substitute(fnamemodify(v:val, ':t'), '\\..\\{-}$', '', '')"),
\ 'sink': 'colo',
\ 'options': '+m',
\ 'tmux_width': 20
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\ })<CR>
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```
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`sink` option can be a function reference. The following example creates a
handy mapping that selects an open buffer.
```vim
" List of buffers
function! g:buflist()
redir => ls
silent ls
redir END
return split(ls, '\n')
endfunction
function! g:bufopen(e)
execute 'buffer '. matchstr(a:e, '^[ 0-9]*')
endfunction
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nnoremap <silent> <Leader><Enter> :call fzf#run({
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\ 'source': reverse(g:buflist()),
\ 'sink': function('g:bufopen'),
\ 'options': '+m',
\ 'tmux_height': '40%'
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\ })<CR>
```
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### Articles
- [fzf+vim+tmux](http://junegunn.kr/2014/04/fzf+vim+tmux)
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Tips
----
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### Rendering issues
If you have any rendering issues, check the followings:
1. Make sure `$TERM` is correctly set. fzf will use 256-color only if it
contains `256` (e.g. `xterm-256color`)
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2. If you're on screen or tmux, `$TERM` should be either `screen` or
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`screen-256color`
3. Some terminal emulators (e.g. mintty) have problem displaying default
background color and make some text unable to read. In that case, try `--black`
option. And if it solves your problem, I recommend including it in
`FZF_DEFAULT_OPTS` for further convenience.
4. If you still have problem, try `--no-256` option or even `--no-color`.
5. Ruby 1.9 or above is required for correctly displaying unicode characters.
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### Ranking algorithm
fzf sorts the result first by the length of the matched substring, then by the
length of the whole string. However it only does so when the number of matches
is less than the limit which is by default 1000, in order to avoid the cost of
sorting a large list and limit the response time of the query.
This limit can be adjusted with `-s` option, or with the environment variable
`FZF_DEFAULT_OPTS`.
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```sh
export FZF_DEFAULT_OPTS="--sort 20000"
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```
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### Respecting `.gitignore`, `.hgignore`, and `svn:ignore`
[ag](https://github.com/ggreer/the_silver_searcher) or
[pt](https://github.com/monochromegane/the_platinum_searcher) will do the
filtering:
```sh
# Feed the output of ag into fzf
ag -l -g "" | fzf
# Setting ag as the default source for fzf
export FZF_DEFAULT_COMMAND='ag -l -g ""'
# Now fzf (w/o pipe) will use ag instead of find
fzf
```
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### `git ls-tree` for fast traversal
If you're running fzf in a large git repository, `git ls-tree` can boost up the
speed of the traversal.
```sh
# Copy the original fzf function to __fzf
declare -f __fzf > /dev/null ||
eval "$(echo "__fzf() {"; declare -f fzf | grep -v '^{' | tail -n +2)"
# Use git ls-tree when possible
fzf() {
if [ -n "$(git rev-parse HEAD 2> /dev/null)" ]; then
FZF_DEFAULT_COMMAND="git ls-tree -r --name-only HEAD" __fzf "$@"
else
__fzf "$@"
fi
}
```
### Fish shell
It's [a known bug of fish](https://github.com/fish-shell/fish-shell/issues/1362)
that it doesn't allow reading from STDIN in command substitution, which means
simple `vim (fzf)` won't work as expected. The workaround is to store the result
of fzf to a temporary file.
```sh
function vimf
if fzf > $TMPDIR/fzf.result
vim (cat $TMPDIR/fzf.result)
end
end
function fe
set tmp $TMPDIR/fzf.result
fzf --query="$argv[1]" --select-1 --exit-0 > $tmp
if [ (cat $tmp | wc -l) -gt 0 ]
vim (cat $tmp)
end
end
```
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### Windows
fzf works on [Cygwin](http://www.cygwin.com/) and
[MSYS2](http://sourceforge.net/projects/msys2/). You may need to use `--black`
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option on MSYS2 to avoid rendering issues.
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License
-------
MIT
Author
------
Junegunn Choi