410 lines
12 KiB
Markdown
410 lines
12 KiB
Markdown
<img src="https://raw.githubusercontent.com/junegunn/i/master/fzf.png" height="170" alt="fzf - a command-line fuzzy finder"> [](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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Pros
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----
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- No dependencies
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- Blazingly fast
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- e.g. `locate / | fzf`
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- Flexible layout
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- Runs in fullscreen or in horizontal/vertical split using tmux
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- The most comprehensive feature set
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- Try `fzf --help` and be surprised
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- Batteries included
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- Vim/Neovim plugin, key bindings and fuzzy auto-completion
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Installation
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------------
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fzf project consists of the following:
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- `fzf` executable
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- `fzf-tmux` script for launching fzf in a tmux pane
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- Shell extensions
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- 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
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install the extra stuff using the attached install script.
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[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.
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```sh
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git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf
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~/.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
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set rtp+=~/.fzf
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```
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Or you can have [vim-plug](https://github.com/junegunn/vim-plug) manage fzf
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(recommended):
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```vim
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Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
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```
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#### Upgrading fzf
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fzf is being actively developed and you might want to upgrade it once in a
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while. Please follow the instruction below depending on the installation
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method.
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- 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
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-----
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fzf will launch curses-based finder, read the list from STDIN, and write the
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selected item to STDOUT.
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```sh
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find * -type f | fzf > selected
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```
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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
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`FZF_DEFAULT_COMMAND`)
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```sh
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vim $(fzf)
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```
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#### Using the finder
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- `CTRL-J` / `CTRL-K` (or `CTRL-N` / `CTRL-P)` to move cursor up and down
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- `Enter` key to select the item, `CTRL-C` / `CTRL-G` / `ESC` to exit
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- On multi-select mode (`-m`), `TAB` and `Shift-TAB` to mark multiple items
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- Emacs style key bindings
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- Mouse: scroll, click, double-click; shift-click and shift-scroll on
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multi-select mode
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#### Search syntax
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Unless otherwise specified, fzf starts in "extended-search mode" where you can
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type in multiple search terms delimited by spaces. e.g. `^music .mp3$ sbtrkt
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!rmx`
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| Token | Match type | Description |
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| -------- | -------------------- | -------------------------------- |
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| `sbtrkt` | fuzzy-match | Items that match `sbtrkt` |
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| `^music` | prefix-exact-match | Items that start with `music` |
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| `.mp3$` | suffix-exact-match | Items that end with `.mp3` |
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| `'wild` | exact-match (quoted) | Items that include `wild` |
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| `!rmx` | inverse-fuzzy-match | Items that do not match `rmx` |
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| `!'fire` | inverse-exact-match | Items that do not include `fire` |
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If you don't prefer fuzzy matching and do not wish to "quote" every word,
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start fzf with `-e` or `--exact` option. Note that when `--exact` is set,
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`'`-prefix "unquotes" the term.
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A single bar character term acts as an OR operator. For example, the following
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query matches entries that start with `core` and end with either `go`, `rb`,
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or `py`.
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```
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^core go$ | rb$ | py$
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```
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#### Environment variables
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- `FZF_DEFAULT_COMMAND`
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- 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
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- e.g. `export FZF_DEFAULT_OPTS="--reverse --inline-info"`
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Examples
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--------
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Many useful examples can be found on [the wiki
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page](https://github.com/junegunn/fzf/wiki/examples). Feel free to add your
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own as well.
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Key bindings for command line
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-----------------------------
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The install script will setup the following key bindings for bash, zsh, and
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fish.
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- `CTRL-T` - Paste the selected files and directories onto the command line
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- Set `FZF_CTRL_T_COMMAND` to override the default command
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- `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
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- Press `CTRL-R` again to toggle sort
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- `ALT-C` - cd into the selected directory
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If you're on a tmux session, fzf will start in a split pane. You may disable
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this tmux integration by setting `FZF_TMUX` to 0, or change the height of the
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pane with `FZF_TMUX_HEIGHT` (e.g. `20`, `50%`).
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If you use vi mode on bash, you need to add `set -o vi` *before* `source
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~/.fzf.bash` in your .bashrc, so that it correctly sets up key bindings for vi
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mode.
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`fzf-tmux` script
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-----------------
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[fzf-tmux](bin/fzf-tmux) is a bash script that opens fzf in a tmux pane.
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```sh
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# usage: fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
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# (-[udlr]: up/down/left/right)
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# select git branches in horizontal split below (15 lines)
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git branch | fzf-tmux -d 15
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# select multiple words in vertical split on the left (20% of screen width)
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cat /usr/share/dict/words | fzf-tmux -l 20% --multi --reverse
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```
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It will still work even when you're not on tmux, silently ignoring `-[udlr]`
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options, so you can invariably use `fzf-tmux` in your scripts.
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Fuzzy completion for bash and zsh
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---------------------------------
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#### Files and directories
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Fuzzy completion for files and directories can be triggered if the word before
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the cursor ends with the trigger sequence which is by default `**`.
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- `COMMAND [DIRECTORY/][FUZZY_PATTERN]**<TAB>`
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```sh
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# Files under current directory
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# - You can select multiple items with TAB key
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vim **<TAB>
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# Files under parent directory
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vim ../**<TAB>
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# Files under parent directory that match `fzf`
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vim ../fzf**<TAB>
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# Files under your home directory
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vim ~/**<TAB>
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# Directories under current directory (single-selection)
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cd **<TAB>
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# Directories under ~/github that match `fzf`
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cd ~/github/fzf**<TAB>
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```
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#### Process IDs
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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.
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```sh
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# Can select multiple processes with <TAB> or <Shift-TAB> keys
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kill -9 <TAB>
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```
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#### Host names
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For ssh and telnet commands, fuzzy completion for host names is provided. The
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names are extracted from /etc/hosts and ~/.ssh/config.
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```sh
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ssh **<TAB>
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telnet **<TAB>
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```
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#### Environment variables / Aliases
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```sh
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unset **<TAB>
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export **<TAB>
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unalias **<TAB>
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```
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#### Settings
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```sh
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# Use ~~ as the trigger sequence instead of the default **
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export FZF_COMPLETION_TRIGGER='~~'
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# Options to fzf command
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export FZF_COMPLETION_OPTS='+c -x'
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# Use ag instead of the default find command for listing candidates.
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# - The first argument to the function is the base path to start traversal
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# - Note that ag only lists files not directories
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# - See the source code (completion.{bash,zsh}) for the details.
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_fzf_compgen_path() {
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ag -g "" "$1"
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}
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```
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#### Supported commands
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On bash, fuzzy completion is enabled only for a predefined set of commands
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(`complete | grep _fzf` to see the list). But you can enable it for other
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commands as well like follows.
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```sh
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# There are also _fzf_path_completion and _fzf_dir_completion
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complete -F _fzf_file_completion -o default -o bashdefault doge
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```
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Usage as Vim plugin
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-------------------
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This repository only enables basic integration with Vim. If you're looking for
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more, check out [fzf.vim](https://github.com/junegunn/fzf.vim) project.
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(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
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" Look for files under current directory
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:FZF
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" Look for files under your home directory
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:FZF ~
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" With options
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:FZF --no-sort -m /tmp
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" Bang version starts in fullscreen instead of using tmux pane or Neovim split
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:FZF!
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```
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Similarly to [ctrlp.vim](https://github.com/kien/ctrlp.vim), use enter key,
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`CTRL-T`, `CTRL-X` or `CTRL-V` to open selected files in the current window,
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in new tabs, in horizontal splits, or in vertical splits respectively.
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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
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options.
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| Option name | Type | Description |
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| -------------------------- | ------------- | ---------------------------------------------------------------- |
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| `source` | string | External command to generate input to fzf (e.g. `find .`) |
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| `source` | list | Vim list as input to fzf |
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| `sink` | string | Vim command to handle the selected item (e.g. `e`, `tabe`) |
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| `sink` | funcref | Reference to function to process each selected item |
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| `sink*` | funcref | Similar to `sink`, but takes the list of output lines at once |
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| `options` | string | Options to fzf |
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| `dir` | string | Working directory |
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| `up`/`down`/`left`/`right` | number/string | Use tmux pane with the given size (e.g. `20`, `50%`) |
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| `window` (*Neovim only*) | string | Command to open fzf window (e.g. `vertical aboveleft 30new`) |
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| `launcher` | string | External terminal emulator to start fzf with (GVim only) |
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| `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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----
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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, `$TERM` should be either `screen` or
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`screen-256color`
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3. Some terminal emulators (e.g. mintty) have problem displaying default
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background color and make some text unable to read. In that case, try
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`--black` option. And if it solves your problem, I recommend including it
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in `FZF_DEFAULT_OPTS` for further convenience.
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4. If you still have problem, try `--no-256` option or even `--no-color`.
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#### Respecting `.gitignore`, `.hgignore`, and `svn:ignore`
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[ag](https://github.com/ggreer/the_silver_searcher) or
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[pt](https://github.com/monochromegane/the_platinum_searcher) will do the
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filtering:
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```sh
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# Feed the output of ag into fzf
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ag -g "" | fzf
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# Setting ag as the default source for fzf
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export FZF_DEFAULT_COMMAND='ag -g ""'
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# Now fzf (w/o pipe) will use ag instead of find
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fzf
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# To apply the command to CTRL-T as well
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export FZF_CTRL_T_COMMAND="$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
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speed of the traversal.
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```sh
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export FZF_DEFAULT_COMMAND='
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(git ls-tree -r --name-only HEAD ||
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find . -path "*/\.*" -prune -o -type f -print -o -type l -print |
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sed s/^..//) 2> /dev/null'
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```
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#### Fish shell
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It's [a known bug of fish](https://github.com/fish-shell/fish-shell/issues/1362)
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that it doesn't allow reading from STDIN in command substitution, which means
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simple `vim (fzf)` won't work as expected. The workaround is to store the result
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of fzf to a temporary file.
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```sh
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fzf > $TMPDIR/fzf.result; and vim (cat $TMPDIR/fzf.result)
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```
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License
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-------
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[MIT](LICENSE)
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Author
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------
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Junegunn Choi
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