stonewareslord/fzf
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
4d72bd098a
fzf/README.md
Junegunn Choi 502973ff75 Add --prompt option (#70)
2014-06-30 12:00:59 +09:00

558 lines
16 KiB
Markdown
Raw Blame History

fzf - Fuzzy finder for your shell
=================================
fzf is a general-purpose fuzzy finder for your shell.
![](https://raw.github.com/junegunn/i/master/fzf.gif)
It was heavily inspired by [ctrlp.vim](https://github.com/kien/ctrlp.vim) and
the likes.
Requirements
------------
fzf requires Ruby (>= 1.8.5).
Installation
------------
Clone this repository and run
[install](https://github.com/junegunn/fzf/blob/master/install) script.
```sh
git clone https://github.com/junegunn/fzf.git ~/.fzf
~/.fzf/install
```
In case you don't have git installed:
```sh
mkdir -p ~/.fzf
curl -L https://github.com/junegunn/fzf/archive/master.tar.gz |
tar xz --strip-components 1 -C ~/.fzf
~/.fzf/install
```
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)
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.
### Install as Vim plugin
Once you have cloned the repository, add the following line to your .vimrc.
```vim
set rtp+=~/.fzf
```
Or you may use any Vim plugin manager, such as
[vim-plug](https://github.com/junegunn/vim-plug).
Usage
-----
```
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 index expressions
for limiting search scope. Each can be a non-zero
integer or a range expression ([BEGIN]..[END])
-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
--prompt=STR Input prompt (default: '> ')
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")
```
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
files excluding hidden ones. (You can override the default command with
`FZF_DEFAULT_COMMAND`)
```sh
vim $(fzf)
```
If you want to preserve the exact sequence of the input, provide `--no-sort` (or
`+s`) option.
```sh
history | fzf +s
```
### Keys
Use CTRL-J and CTRL-K (or CTRL-N and CTRL-P) to change the selection, press
enter key to select the item. CTRL-C, CTRL-G, or ESC will terminate the finder.
The following readline key bindings should also work as expected.
- CTRL-A / CTRL-E
- CTRL-B / CTRL-F
- CTRL-H / CTRL-D
- CTRL-W / CTRL-U / CTRL-Y
- ALT-B / ALT-F
If you enable multi-select mode with `-m` option, you can select multiple items
with TAB or Shift-TAB key.
You can also use mouse. Double-click on an item to select it or shift-click (or
ctrl-click) to select multiple items. Use mouse wheel to move the cursor up and
down.
### Extended-search mode
With `-x` or `--extended` option, fzf will start in "extended-search mode".
In this mode, you can specify multiple patterns delimited by spaces,
such as: `^music .mp3$ sbtrkt !rmx`
| Token | Description | Match type |
| -------- | -------------------------------- | -------------------- |
| `^music` | Items that start with `music` | prefix-exact-match |
| `.mp3$` | Items that end with `.mp3` | suffix-exact-match |
| `sbtrkt` | Items that match `sbtrkt` | fuzzy-match |
| `!rmx` | Items that do not match `rmx` | inverse-fuzzy-match |
| `'wild` | Items that include `wild` | exact-match (quoted) |
| `!'fire` | Items that do not include `fire` | inverse-exact-match |
If you don't need fuzzy matching and do not wish to "quote" every word, start
fzf with `-e` or `--extended-exact` option.
Useful examples
---------------
```sh
# fe [FUZZY PATTERN] - Open the selected file with the default editor
# - Bypass fuzzy finder if there's only one match (--select-1)
# - Exit if there's no match (--exit-0)
fe() {
local file
file=$(fzf --query="$1" --select-1 --exit-0)
[ -n "$file" ] && ${EDITOR:-vim} "$file"
}
# fd - cd to selected directory
fd() {
local dir
dir=$(find ${1:-*} -path '*/\.*' -prune \
-o -type d -print 2> /dev/null | fzf +m) &&
cd "$dir"
}
# fh - repeat history
fh() {
eval $(([ -n "$ZSH_NAME" ] && fc -l 1 || history) | fzf +s | sed 's/ *[0-9]* *//')
}
# fkill - kill process
fkill() {
ps -ef | sed 1d | fzf -m | awk '{print $2}' | xargs kill -${1:-9}
}
```
For more examples, see [the wiki
page](https://github.com/junegunn/fzf/wiki/examples).
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
If you're on a tmux session, `CTRL-T` will launch fzf in a new split-window. You
may disable this tmux integration by setting `FZF_TMUX` to 0, or change the
height of the window with `FZF_TMUX_HEIGHT` (e.g. `20`, `50%`).
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.
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`.
Auto-completion
---------------
Disclaimer: *Auto-completion feature is currently experimental, it can change
over time*
### bash
#### Files and directories
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
# Files under current directory
# - You can select multiple items with TAB key
vim **<TAB>
# Files under parent directory
vim ../**<TAB>
# Files under parent directory that match `fzf`
vim ../fzf**<TAB>
# Files under your home directory
vim ~/**<TAB>
# Directories under current directory (single-selection)
cd **<TAB>
# Directories under ~/github that match `fzf`
cd ~/github/fzf**<TAB>
```
#### Process IDs
Fuzzy completion for PIDs is provided for kill command. In this case
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
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>
```
#### Settings
```sh
# Use ~~ as the trigger sequence instead of the default **
export FZF_COMPLETION_TRIGGER='~~'
# Options to fzf command
export FZF_COMPLETION_OPTS='+c -x'
```
### zsh
TODO :smiley:
(Pull requests are appreciated.)
Usage as Vim plugin
-------------------
(Note: To use fzf in GVim, an external terminal emulator is required.)
### `:FZF[!]`
If you have set up fzf for Vim, `:FZF` command will be added.
```vim
" Look for files under current directory
:FZF
" Look for files under your home directory
:FZF ~
" With options
:FZF --no-sort -m /tmp
```
Note that the environment variables `FZF_DEFAULT_COMMAND` and `FZF_DEFAULT_OPTS`
also apply here.
If you're on a tmux session, `:FZF` will launch fzf in a new split-window whose
height can be adjusted with `g:fzf_tmux_height` (default: '40%'). However, the
bang version (`:FZF!`) will always start in fullscreen.
In GVim, you need an external terminal emulator to start fzf with. `xterm`
command is used by default, but you can customize it with `g:fzf_launcher`.
```vim
" This is the default. %s is replaced with fzf command
let g:fzf_launcher = 'xterm -e bash -ic %s'
" Use urxvt instead
let g:fzf_launcher = 'urxvt -geometry 120x30 -e sh -c %s'
```
If you're running MacVim on OSX, I recommend you to use iTerm2 as the launcher.
Refer to the [this wiki
page](https://github.com/junegunn/fzf/wiki/fzf-with-MacVim-and-iTerm2) to see
how to set up.
### `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%`) |
| `launcher` | string | External terminal emulator to start fzf with (Only used in GVim) |
#### 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'), '\\..\\{-}$', '', '')"),
\ 'sink': 'colo',
\ 'options': '+m',
\ 'tmux_width': 20,
\ 'launcher': 'xterm -geometry 20x30 -e bash -ic %s'
\ })<CR>
```
`sink` option can be a function reference. The following example creates a
handy mapping that selects an open buffer.
```vim
" List of buffers
function! BufList()
redir => ls
silent ls
redir END
return split(ls, '\n')
endfunction
function! BufOpen(e)
execute 'buffer '. matchstr(a:e, '^[ 0-9]*')
endfunction
nnoremap <silent> <Leader><Enter> :call fzf#run({
\ 'source': reverse(BufList()),
\ 'sink': function('BufOpen'),
\ 'options': '+m',
\ 'tmux_height': '40%'
\ })<CR>
```
### Articles
- [fzf+vim+tmux](http://junegunn.kr/2014/04/fzf+vim+tmux)
Tips
----
### Rendering issues
If you have any rendering issues, check the followings:
1. Make sure `$TERM` is correctly set. fzf will use 256-color only if it
contains `256` (e.g. `xterm-256color`)
2. If you're on screen or tmux, `$TERM` should be either `screen` or
`screen-256color`
3. Some terminal emulators (e.g. mintty) have problem displaying default
background color and make some text unable to read. In that case, try `--black`
option. And if it solves your problem, I recommend including it in
`FZF_DEFAULT_OPTS` for further convenience.
4. If you still have problem, try `--no-256` option or even `--no-color`.
5. Ruby 1.9 or above is required for correctly displaying unicode characters.
### Ranking algorithm
fzf sorts the result first by the length of the matched substring, then by the
length of the whole string. However it only does so when the number of matches
is less than the limit which is by default 1000, in order to avoid the cost of
sorting a large list and limit the response time of the query.
This limit can be adjusted with `-s` option, or with the environment variable
`FZF_DEFAULT_OPTS`.
```sh
export FZF_DEFAULT_OPTS="--sort 20000"
```
### Respecting `.gitignore`, `.hgignore`, and `svn:ignore`
[ag](https://github.com/ggreer/the_silver_searcher) or
[pt](https://github.com/monochromegane/the_platinum_searcher) will do the
filtering:
```sh
# Feed the output of ag into fzf
ag -l -g "" | fzf
# Setting ag as the default source for fzf
export FZF_DEFAULT_COMMAND='ag -l -g ""'
# Now fzf (w/o pipe) will use ag instead of find
fzf
```
### `git ls-tree` for fast traversal
If you're running fzf in a large git repository, `git ls-tree` can boost up the
speed of the traversal.
```sh
# Copy the original fzf function to __fzf
declare -f __fzf > /dev/null ||
eval "$(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
}
```
### Using fzf with tmux splits
It isn't too hard to write your own fzf-tmux combo like the default
CTRL-T key binding. (Or is it?)
```sh
# This is a helper function that splits the current pane to start the given
# command ($1) and sends its output back to the original pane with any number of
# optional keys (shift; $*).
fzf_tmux_helper() {
[ -n "$TMUX_PANE" ] || return
local cmd=$1
shift
tmux split-window -p 40 \
"bash -c \"\$(tmux send-keys -t $TMUX_PANE \"\$(source ~/.fzf.bash; $cmd)\" $*)\""
}
# This is the function we are going to run in the split pane.
# - "find" to list the directories
# - "sed" will escape spaces in the paths.
# - "paste" will join the selected paths into a single line
fzf_tmux_dir() {
fzf_tmux_helper \
'find * -path "*/\.*" -prune -o -type d -print 2> /dev/null |
fzf --multi |
sed "s/ /\\\\ /g" |
paste -sd" " -' Space
}
# Bind CTRL-X-CTRL-D to fzf_tmux_dir
bind '"\C-x\C-d": "$(fzf_tmux_dir)\e\C-e"'
```
### 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
```
### Windows
fzf works on [Cygwin](http://www.cygwin.com/) and
[MSYS2](http://sourceforge.net/projects/msys2/). You may need to use `--black`
option on MSYS2 to avoid rendering issues.
### 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
-------
MIT
Author
------
Junegunn Choi
Reference in New Issue View Git Blame Copy Permalink