mirror of
https://github.com/junegunn/fzf.vim.git
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fd812b5710
The boolean value tells the function if the output of the command contains column numbers, but we can just see the selected lines if they contain column numbers. The argument is now removed from the documentation, and will be silently ignored for backward compatibility. Close #1480
393 lines
16 KiB
Markdown
393 lines
16 KiB
Markdown
fzf :heart: vim
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===============
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Things you can do with [fzf][fzf] and Vim.
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Rationale
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---------
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[fzf][fzf] itself is not a Vim plugin, and the official repository only
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provides the [basic wrapper function][run] for Vim. It's up to the users to
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write their own Vim commands with it. However, I've learned that many users of
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fzf are not familiar with Vimscript and are looking for the "default"
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implementation of the features they can find in the alternative Vim plugins.
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This repository is a bundle of fzf-based commands and mappings extracted from
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my [.vimrc][vimrc] to address such needs. They are *not* designed to be
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flexible or configurable, and there's no guarantee of backward-compatibility.
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Why you should use fzf on Vim
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-----------------------------
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Because you can and you love fzf.
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fzf runs asynchronously and can be orders of magnitude faster than similar Vim
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plugins. However, the benefit may not be noticeable if the size of the input
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is small, which is the case for many of the commands provided here.
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Nevertheless I wrote them anyway since it's really easy to implement custom
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selector with fzf.
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Installation
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------------
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fzf.vim depends on the basic Vim plugin of [the main fzf
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repository][fzf-main], which means you need to **set up both "fzf" and
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"fzf.vim" on Vim**. To learn more about fzf/Vim integration, see
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[README-VIM][README-VIM].
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[fzf-main]: https://github.com/junegunn/fzf
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[README-VIM]: https://github.com/junegunn/fzf/blob/master/README-VIM.md
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### Using [vim-plug](https://github.com/junegunn/vim-plug)
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```vim
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Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
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Plug 'junegunn/fzf.vim'
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```
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`fzf#install()` makes sure that you have the latest binary, but it's optional,
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so you can omit it if you use a plugin manager that doesn't support hooks.
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### Dependencies
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- [fzf][fzf-main] 0.23.0 or above
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- For syntax-highlighted preview, install [bat](https://github.com/sharkdp/bat)
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- If [delta](https://github.com/dandavison/delta) is available, `GF?`,
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`Commits` and `BCommits` will use it to format `git diff` output.
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- `Ag` requires [The Silver Searcher (ag)][ag]
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- `Rg` requires [ripgrep (rg)][rg]
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- `Tags` and `Helptags` require Perl
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Commands
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--------
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| Command | List |
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| --- | --- |
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| `:Files [PATH]` | Files (runs `$FZF_DEFAULT_COMMAND` if defined) |
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| `:GFiles [OPTS]` | Git files (`git ls-files`) |
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| `:GFiles?` | Git files (`git status`) |
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| `:Buffers` | Open buffers |
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| `:Colors` | Color schemes |
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| `:Ag [PATTERN]` | [ag][ag] search result (`ALT-A` to select all, `ALT-D` to deselect all) |
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| `:Rg [PATTERN]` | [rg][rg] search result (`ALT-A` to select all, `ALT-D` to deselect all) |
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| `:RG [PATTERN]` | [rg][rg] search result; relaunch ripgrep on every keystroke |
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| `:Lines [QUERY]` | Lines in loaded buffers |
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| `:BLines [QUERY]` | Lines in the current buffer |
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| `:Tags [QUERY]` | Tags in the project (`ctags -R`) |
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| `:BTags [QUERY]` | Tags in the current buffer |
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| `:Marks` | Marks |
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| `:Windows` | Windows |
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| `:Locate PATTERN` | `locate` command output |
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| `:History` | `v:oldfiles` and open buffers |
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| `:History:` | Command history |
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| `:History/` | Search history |
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| `:Snippets` | Snippets ([UltiSnips][us]) |
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| `:Commits [LOG_OPTS]` | Git commits (requires [fugitive.vim][f]) |
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| `:BCommits [LOG_OPTS]` | Git commits for the current buffer; visual-select lines to track changes in the range |
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| `:Commands` | Commands |
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| `:Maps` | Normal mode mappings |
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| `:Helptags` | Help tags <sup id="a1">[1](#helptags)</sup> |
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| `:Filetypes` | File types
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- Most commands support `CTRL-T` / `CTRL-X` / `CTRL-V` key
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bindings to open in a new tab, a new split, or in a new vertical split
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- Bang-versions of the commands (e.g. `Ag!`) will open fzf in fullscreen
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- You can set `g:fzf_command_prefix` to give the same prefix to the commands
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- e.g. `let g:fzf_command_prefix = 'Fzf'` and you have `FzfFiles`, etc.
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(<a name="helptags">1</a>: `Helptags` will shadow the command of the same name
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from [pathogen][pat]. But its functionality is still available via `call
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pathogen#helptags()`. [↩](#a1))
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[pat]: https://github.com/tpope/vim-pathogen
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[f]: https://github.com/tpope/vim-fugitive
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Customization
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-------------
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### Global options
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Every command in fzf.vim internally calls `fzf#wrap` function of the main
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repository which supports a set of global option variables. So please read
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through [README-VIM][README-VIM] to learn more about them.
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#### Preview window
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Some commands will show the preview window on the right. You can customize the
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behavior with `g:fzf_preview_window`. Here are some examples:
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```vim
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" This is the default option:
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" - Preview window on the right with 50% width
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" - CTRL-/ will toggle preview window.
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" - Note that this array is passed as arguments to fzf#vim#with_preview function.
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" - To learn more about preview window options, see `--preview-window` section of `man fzf`.
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let g:fzf_preview_window = ['right,50%', 'ctrl-/']
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" Preview window is hidden by default. You can toggle it with ctrl-/.
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" It will show on the right with 50% width, but if the width is smaller
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" than 70 columns, it will show above the candidate list
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let g:fzf_preview_window = ['hidden,right,50%,<70(up,40%)', 'ctrl-/']
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" Empty value to disable preview window altogether
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let g:fzf_preview_window = []
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" fzf.vim needs bash to display the preview window.
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" On Windows, fzf.vim will first see if bash is in $PATH, then if
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" Git bash (C:\Program Files\Git\bin\bash.exe) is available.
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" If you want it to use a different bash, set this variable.
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" let g:fzf_preview_bash = 'C:\Git\bin\bash.exe'
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```
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### Command-local options
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A few commands in fzf.vim can be customized with global option variables shown
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below.
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```vim
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" [Buffers] Jump to the existing window if possible
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let g:fzf_buffers_jump = 1
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" [[B]Commits] Customize the options used by 'git log':
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let g:fzf_commits_log_options = '--graph --color=always --format="%C(auto)%h%d %s %C(black)%C(bold)%cr"'
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" [Tags] Command to generate tags file
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let g:fzf_tags_command = 'ctags -R'
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" [Commands] --expect expression for directly executing the command
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let g:fzf_commands_expect = 'alt-enter,ctrl-x'
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```
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### Advanced customization
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#### Vim functions
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Each command in fzf.vim is backed by a Vim function. You can override
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a command or define a variation of it by calling its corresponding function.
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| Command | Vim function |
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| --- | --- |
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| `Files` | `fzf#vim#files(dir, [spec dict], [fullscreen bool])` |
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| `GFiles` | `fzf#vim#gitfiles(git_options, [spec dict], [fullscreen bool])` |
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| `GFiles?` | `fzf#vim#gitfiles('?', [spec dict], [fullscreen bool])` |
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| `Buffers` | `fzf#vim#buffers([spec dict], [fullscreen bool])` |
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| `Colors` | `fzf#vim#colors([spec dict], [fullscreen bool])` |
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| `Rg` | `fzf#vim#grep(command, [spec dict], [fullscreen bool])` |
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| `RG` | `fzf#vim#grep2(command_prefix, query, [spec dict], [fullscreen bool])` |
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| ... | ... |
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(We can see that the last two optional arguments of each function are
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identical. They are directly passed to `fzf#wrap` function. If you haven't
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read [README-VIM][README-VIM] already, please read it before proceeding.)
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#### Example: Customizing `Files` command
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This is the default definition of `Files` command:
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```vim
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command! -bang -nargs=? -complete=dir Files call fzf#vim#files(<q-args>, <bang>0)
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```
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Let's say you want to a variation of it called `ProjectFiles` that only
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searches inside `~/projects` directory. Then you can do it like this:
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```vim
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command! -bang ProjectFiles call fzf#vim#files('~/projects', <bang>0)
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```
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Or, if you want to override the command with different fzf options, just pass
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a custom spec to the function.
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```vim
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command! -bang -nargs=? -complete=dir Files
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\ call fzf#vim#files(<q-args>, {'options': ['--layout=reverse', '--info=inline']}, <bang>0)
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```
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Want a preview window?
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```vim
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command! -bang -nargs=? -complete=dir Files
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\ call fzf#vim#files(<q-args>, {'options': ['--layout=reverse', '--info=inline', '--preview', 'cat {}']}, <bang>0)
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```
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It kind of works, but you probably want a nicer previewer program than `cat`.
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fzf.vim ships [a versatile preview script](bin/preview.sh) you can readily
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use. It internally executes [bat](https://github.com/sharkdp/bat) for syntax
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highlighting, so make sure to install it.
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```vim
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command! -bang -nargs=? -complete=dir Files
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\ call fzf#vim#files(<q-args>, {'options': ['--layout=reverse', '--info=inline', '--preview', '~/.vim/plugged/fzf.vim/bin/preview.sh {}']}, <bang>0)
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```
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However, it's not ideal to hard-code the path to the script which can be
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different in different circumstances. So in order to make it easier to set up
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the previewer, fzf.vim provides `fzf#vim#with_preview` helper function.
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Similarly to `fzf#wrap`, it takes a spec dictionary and returns a copy of it
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with additional preview options.
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```vim
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command! -bang -nargs=? -complete=dir Files
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\ call fzf#vim#files(<q-args>, fzf#vim#with_preview({'options': ['--layout=reverse', '--info=inline']}), <bang>0)
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```
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You can just omit the spec argument if you only want the previewer.
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```vim
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command! -bang -nargs=? -complete=dir Files
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\ call fzf#vim#files(<q-args>, fzf#vim#with_preview(), <bang>0)
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```
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#### Example: `git grep` wrapper
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The following example implements `GGrep` command that works similarly to
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predefined `Ag` or `Rg` using `fzf#vim#grep`.
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- We set the base directory to git root by setting `dir` attribute in spec
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dictionary.
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- [The preview script](bin/preview.sh) supports `grep` format
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(`FILE_PATH:LINE_NO:...`), so we can just wrap the spec with
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`fzf#vim#with_preview` as before to enable previewer.
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```vim
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command! -bang -nargs=* GGrep
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\ call fzf#vim#grep(
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\ 'git grep --line-number -- '.shellescape(<q-args>),
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\ fzf#vim#with_preview({'dir': systemlist('git rev-parse --show-toplevel')[0]}), <bang>0)
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```
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Mappings
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--------
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| Mapping | Description |
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| --- | --- |
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| `<plug>(fzf-maps-n)` | Normal mode mappings |
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| `<plug>(fzf-maps-i)` | Insert mode mappings |
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| `<plug>(fzf-maps-x)` | Visual mode mappings |
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| `<plug>(fzf-maps-o)` | Operator-pending mappings |
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| `<plug>(fzf-complete-word)` | `cat /usr/share/dict/words` |
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| `<plug>(fzf-complete-path)` | Path completion using `find` (file + dir) |
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| `<plug>(fzf-complete-file)` | File completion using `find` |
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| `<plug>(fzf-complete-line)` | Line completion (all open buffers) |
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| `<plug>(fzf-complete-buffer-line)` | Line completion (current buffer only) |
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```vim
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" Mapping selecting mappings
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nmap <leader><tab> <plug>(fzf-maps-n)
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xmap <leader><tab> <plug>(fzf-maps-x)
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omap <leader><tab> <plug>(fzf-maps-o)
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" Insert mode completion
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imap <c-x><c-k> <plug>(fzf-complete-word)
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imap <c-x><c-f> <plug>(fzf-complete-path)
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imap <c-x><c-l> <plug>(fzf-complete-line)
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```
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Completion functions
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--------------------
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| Function | Description |
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| --- | --- |
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| `fzf#vim#complete#path(command, [spec])` | Path completion |
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| `fzf#vim#complete#word([spec])` | Word completion |
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| `fzf#vim#complete#line([spec])` | Line completion (all open buffers) |
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| `fzf#vim#complete#buffer_line([spec])` | Line completion (current buffer only) |
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```vim
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" Path completion with custom source command
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inoremap <expr> <c-x><c-f> fzf#vim#complete#path('fd')
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inoremap <expr> <c-x><c-f> fzf#vim#complete#path('rg --files')
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" Word completion with custom spec with popup layout option
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inoremap <expr> <c-x><c-k> fzf#vim#complete#word({'window': { 'width': 0.2, 'height': 0.9, 'xoffset': 1 }})
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```
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Custom completion
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-----------------
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`fzf#vim#complete` is a helper function for creating custom fuzzy completion
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using fzf. If the first parameter is a command string or a Vim list, it will
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be used as the source.
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```vim
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" Replace the default dictionary completion with fzf-based fuzzy completion
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inoremap <expr> <c-x><c-k> fzf#vim#complete('cat /usr/share/dict/words')
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```
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For advanced uses, you can pass an options dictionary to the function. The set
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of options is pretty much identical to that for `fzf#run` only with the
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following exceptions:
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- `reducer` (funcref)
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- Reducer transforms the output lines of fzf into a single string value
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- `prefix` (string or funcref; default: `\k*$`)
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- Regular expression pattern to extract the completion prefix
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- Or a function to extract completion prefix
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- Both `source` and `options` can be given as funcrefs that take the
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completion prefix as the argument and return the final value
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- `sink` or `sink*` are ignored
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```vim
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" Global line completion (not just open buffers. ripgrep required.)
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inoremap <expr> <c-x><c-l> fzf#vim#complete(fzf#wrap({
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\ 'prefix': '^.*$',
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\ 'source': 'rg -n ^ --color always',
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\ 'options': '--ansi --delimiter : --nth 3..',
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\ 'reducer': { lines -> join(split(lines[0], ':\zs')[2:], '') }}))
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```
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### Reducer example
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```vim
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function! s:make_sentence(lines)
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return substitute(join(a:lines), '^.', '\=toupper(submatch(0))', '').'.'
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endfunction
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inoremap <expr> <c-x><c-s> fzf#vim#complete({
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\ 'source': 'cat /usr/share/dict/words',
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\ 'reducer': function('<sid>make_sentence'),
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\ 'options': '--multi --reverse --margin 15%,0',
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\ 'left': 20})
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```
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Status line of terminal buffer
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------------------------------
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When fzf starts in a terminal buffer (see [fzf/README-VIM.md][termbuf]), you
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may want to customize the statusline of the containing buffer.
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[termbuf]: https://github.com/junegunn/fzf/blob/master/README-VIM.md#fzf-inside-terminal-buffer
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### Hide statusline
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```vim
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autocmd! FileType fzf set laststatus=0 noshowmode noruler
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\| autocmd BufLeave <buffer> set laststatus=2 showmode ruler
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```
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### Custom statusline
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```vim
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function! s:fzf_statusline()
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" Override statusline as you like
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highlight fzf1 ctermfg=161 ctermbg=251
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highlight fzf2 ctermfg=23 ctermbg=251
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highlight fzf3 ctermfg=237 ctermbg=251
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setlocal statusline=%#fzf1#\ >\ %#fzf2#fz%#fzf3#f
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endfunction
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autocmd! User FzfStatusLine call <SID>fzf_statusline()
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```
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License
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-------
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MIT
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[fzf]: https://github.com/junegunn/fzf
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[run]: https://github.com/junegunn/fzf/blob/master/README-VIM.md#fzfrun
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[vimrc]: https://github.com/junegunn/dotfiles/blob/master/vimrc
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[ag]: https://github.com/ggreer/the_silver_searcher
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[rg]: https://github.com/BurntSushi/ripgrep
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[us]: https://github.com/SirVer/ultisnips
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