fzf ❤️ lua

fzf changed my life, it can change yours too if you allow it.

Rationale

What more can be said about fzf? It is the single most impactful tool for my command line workflow, once I started using fzf I couldn’t see myself living without it.

To understand fzf properly I highly recommended fzf screencast by @samoshkin

This is my take on the original fzf.vim, written in lua for neovim 0.5, it builds on the elegant nvim-fzf as an async interface to create a performant and lightweight fzf client for neovim that rivals any of the new shiny fuzzy finders for neovim.

Why use this plug-in?

... and not, to name a few, telescope or vim-clap?

As @junegunn himself put it, “because you can and you love fzf”.

If you’re happy with your current setup there is absolutely no reason to switch.

That said, without taking anything away from the greatness of other plugins I found it more efficient having a uniform experience between my shell and my nvim. In addition fzf has been a rock for me since I started using it and hadn’t failed me once, it never hangs and can handle almost anything you throw at it. That, and colorful file icons and git indicators!.

Dependencies

• Linux or MacOS only, see nvim-fzf's How it works section
• fzf binary installed
• nvim-fzf
• nvim-web-devicons (optional)

Optional dependencies (recommended)

• fd - better performance find utility
• bat - for colorful syntax highlighted previews
• ripgrep - for better grep-like searches

Installation

Using vim-plug

Plug 'kyazdani42/nvim-web-devicons'
Plug 'ibhagwan/fzf-lua'

Using packer.nvim

use { 'ibhagwan/fzf-lua',
  requires = {
    'kyazdani42/nvim-web-devicons', -- optional for icons
    'vijaymarupudi/nvim-fzf' }
}

Note if you already have fzf installed you do not need to install fzf or fzf.vim, however if you do not have it installed, you only need fzf which can be installed with (fzf.vim is not a requirement nor conflict):

Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }

or with packer.nvim:

use = { 'junegunn/fzf', run = './install --bin', }

Usage

Fzf-lua aims to be as plug and play as possible with sane defaults, you can run any fzf-lua command like this:

:lua require('fzf-lua').files()

or with arguments:

:lua require('fzf-lua').files({ cwd = '~/.config' })

which can be easily mapped to:

nnoremap <c-P> <cmd>lua require('fzf-lua').files()<CR>

Commands

Command	List
buffers	open buffers
files	find or fd on a path
git_files	git ls-files
oldfiles	opened files history
quickfix	quickfix list
loclist	location list
grep	search for a pattern with grep or rg
grep_last	run search again with the last pattern
grep_cword	search word under cursor
grep_cWORD	search WORD under cursor
grep_visual	search visual selection
grep_curbuf	live grep current buffer
live_grep	live grep current project
help_tags	help tags
man_pages	man pages
colorschemes	color schemes

Customization

I tried to make it as customizable as possible, if you find you need to change something that isn’t below, open an issue and I’ll do my best to add it.

customization can be achieved by calling the setup() function or individually sending parameters to a builtin command, for exmaple:

:lua require('fzf-lua').files({ fzf_layout = 'reverse-list' })

Consult the list below for available settings:

require'fzf-lua'.setup {
  win_height          = 0.85,         -- window height
  win_width           = 0.80,         -- window width
  win_row             = 0.30,         -- window row position (0=top, 1=bottom)
  win_col             = 0.50,         -- window col position (0=left, 1=right)
  -- win_border          = false,         -- window border? or borderchars?
  win_border          = { '╭', '─', '╮', '│', '╯', '─', '╰', '│' },
  fzf_args            = '',           -- adv: fzf extra args, empty unless adv
  fzf_layout          = 'reverse',    -- fzf '--layout='
  preview_cmd         = '',           -- 'head -n $FZF_PREVIEW_LINES',
  preview_border      = 'border',     -- border|noborder
  preview_wrap        = 'nowrap',     -- wrap|nowrap
  preview_opts        = 'nohidden',   -- hidden|nohidden
  preview_vertical    = 'down:45%',   -- up|down:size
  preview_horizontal  = 'right:60%',  -- right|left:size
  preview_layout      = 'flex',       -- horizontal|vertical|flex
  flip_columns        = 120,          -- #cols to switch to horizontal on flex
  bat_theme           = 'Coldark-Dark', -- bat preview theme (bat --list-themes)
  bat_opts            = '--style=numbers,changes --color always',
  files = {
    prompt            = 'Files❯ ',
    cmd               = '',           -- "find . -type f -printf '%P\n'",
    git_icons         = true,         -- show git icons?
    file_icons        = true,         -- show file icons?
    color_icons       = true,         -- colorize file|git icons
    actions = {
      ["default"]     = actions.file_edit,
      ["ctrl-s"]      = actions.file_split,
      ["ctrl-v"]      = actions.file_vsplit,
      ["ctrl-t"]      = actions.file_tabedit,
      ["ctrl-q"]      = actions.file_sel_to_qf,
      ["ctrl-y"]      = function(selected) print(selected[2]) end,
    }
  },
  grep = {
    prompt            = 'Rg❯ ',
    input_prompt      = 'Grep For❯ ',
    -- cmd               = "rg --vimgrep",
    git_icons         = true,         -- show git icons?
    file_icons        = true,         -- show file icons?
    color_icons       = true,         -- colorize file|git icons
    actions = {
      ["default"]     = actions.file_edit,
      ["ctrl-s"]      = actions.file_split,
      ["ctrl-v"]      = actions.file_vsplit,
      ["ctrl-t"]      = actions.file_tabedit,
      ["ctrl-q"]      = actions.file_sel_to_qf,
      ["ctrl-y"]      = function(selected) print(selected[2]) end,
    }
  },
  oldfiles = {
    prompt            = 'History❯ ',
    cwd_only          = false,
  },
  git = {
    prompt            = 'GitFiles❯ ',
    cmd               = 'git ls-files --exclude-standard',
    git_icons         = true,         -- show git icons?
    file_icons        = true,         -- show file icons?
    color_icons       = true,         -- colorize file|git icons
  },
  buffers = {
    prompt            = 'Buffers❯ ',
    file_icons        = true,         -- show file icons?
    color_icons       = true,         -- colorize file|git icons
    sort_lastused     = true,         -- sort buffers() by last used
    actions = {
      ["default"]     = actions.buf_edit,
      ["ctrl-s"]      = actions.buf_split,
      ["ctrl-v"]      = actions.buf_vsplit,
      ["ctrl-t"]      = actions.buf_tabedit,
      ["ctrl-x"]      = actions.buf_del,
    }
  },
  colorschemes = {
    prompt            = 'Colorschemes❯ ',
    live_preview      = true,
    actions = {
      ["default"]     = actions.colorscheme,
      ["ctrl-y"]      = function(selected) print(selected[2]) end,
    },
    winopts = {
      win_height       = 0.55,
      win_width        = 0.30,
      window_on_create = function()
        vim.cmd("set winhl=Normal:Normal")
      end,
    },
    post_reset_cb    = function()
      require('feline').reset_highlights()
    end,
  },
  quickfix = {
    cwd               = vim.loop.cwd(),
    file_icons        = true,
  },
  -- placeholders for additional user customizations
  loclist = {},
  helptags = {},
  manpages = {},
  file_icon_colors = {                -- override colors for extensions
    ["lua"]   = "blue",
  },
  git_icons = {                       -- override colors for git icons
    ["M"]     = "M", --"★",
    ["D"]     = "D", --"✗",
    ["A"]     = "A", --"+",
    ["?"]     = "?"
  },
  git_icon_colors = {                 -- override colors for git icon colors
    ["M"]     = "yellow",
    ["D"]     = "red",
    ["A"]     = "green",
    ["?"]     = "magenta"
  },
  fzf_binds           = {             -- fzf '--bind=' options
    'f2:toggle-preview',
    'f3:toggle-preview-wrap',
    'shift-down:preview-page-down',
    'shift-up:preview-page-up',
    'ctrl-d:half-page-down',
    'ctrl-u:half-page-up',
    'ctrl-f:page-down',
    'ctrl-b:page-up',
    'ctrl-a:toggle-all',
    'ctrl-u:clear-query',
  },
  window_on_create = function()         -- nvim window options override
    vim.cmd("set winhl=Normal:Normal")  -- popup bg match normal windows
  end
}

This can also be run from a .vim file using

lua << EOF
require('fzf-lua').setup{
-- ...
}
EOF

Known issues

• live_grep has icons disabled until I find a solution for fzf's change:reload event
• Tested mostly with both rg, fd and bat installed, there might be issues with the default grep, find and head alternatives

TODO

• Add built-in plugin documentation
• Add "hidden" options documentation
• Add FAQ
• Add more providers
  • vim commands
  • vim command history
  • vim keymaps
  • vim options
  • search terms history
  • tags
  • marks
  • registers
  • spelling suggestions
  • git commits
  • git branches
  • LSP (refs, symbols, etc)

Credits

Big thank you to all those I borrowed code/ideas from, I read so many configs and plugin codes that I probably forgot where I found some samples from so if I missed your name feel free to contact me and I'll add it below:

• @vijaymarupudi for his wonderful nvim-fzf plugin which is in the core of this plugin
• @tjdevries for too many great things to list here and for borrowing some of his nvim-telescope provider code
• @lukas-reineke for inspiring the solution after browsing his dotfiles and coming across his fuzzy.lua , and while we're, also here for his great lua plugin indent-blankline
• @sindrets for borrowing utilities from his fantastic lua plugin diffview.nvim