lightline.vim

by itchyny

itchyny / lightline.vim

A light and configurable statusline/tabline plugin for Vim

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lightline.vim

A light and configurable statusline/tabline plugin for Vim

https://github.com/itchyny/lightline.vim

powerline (default)

lightline.vim - powerline

wombat

lightline.vim - wombat

jellybeans

lightline.vim - jellybeans

solarized dark

lightline.vim - solarized dark

solarized light

lightline.vim - solarized light

PaperColor dark

lightline.vim - PaperColor dark

PaperColor light

lightline.vim - PaperColor light

seoul256

lightline.vim - seoul256

one dark

lightline.vim - one dark

one light

lightline.vim - one light

landscape

lightline.vim - landscape

landscape is my colorscheme, which is a high-contrast cterm-supported colorscheme, available at https://github.com/itchyny/landscape.vim

For screenshots of all available colorshemes, see this file.

Why yet another clone of powerline?

  • vim-powerline is a nice plugin, but deprecated.
  • powerline is a nice plugin, but difficult to configure.
  • vim-airline is a nice plugin, but it uses too many functions of other plugins, which should be done by users in
    .vimrc
    .

Spirit of this plugin

  • Minimalism. The core script is very small to achieve enough functions as a statusline plugin.
  • Configurability. You can create your own component and easily add to the statusline and the tabline.
  • Orthogonality. The plugin does not rely on the implementation of other plugins. Such plugin crossing settings should be configured by users.

Installation

Vim packages (since Vim 7.4.1528)

  1. Clone the plugin with the following command.

    git clone https://github.com/itchyny/lightline.vim ~/.vim/pack/plugins/start/lightline
    

Pathogen

  1. Install with the following command.

    git clone https://github.com/itchyny/lightline.vim ~/.vim/bundle/lightline.vim
    
  2. Generate help tags with

    :Helptags
    .

Vundle

  1. Add the following configuration to your

    .vimrc
    .
    Plugin 'itchyny/lightline.vim'
    
  2. Install with

    :PluginInstall
    .

NeoBundle

  1. Add the following configuration to your

    .vimrc
    .
    NeoBundle 'itchyny/lightline.vim'
    
  2. Install with

    :NeoBundleInstall
    .

vim-plug

  1. Add the following configuration to your

    .vimrc
    .
    Plug 'itchyny/lightline.vim'
    
  2. Install with

    :PlugInstall
    .

dein.vim

  1. Add the following configuration to your

    .vimrc
    .
    call dein#add('itchyny/lightline.vim')
    
  2. Install with

    :call dein#install()

Introduction

After installing this plugin, you restart the editor and will get a cool statusline. lightline.vim - tutorial

The color of the statusline changes due to the mode of Vim. Try typing something, selecting in visual mode and replacing some texts.

If the statusline looks like lightline.vim - tutorial

add the following configuration to your

.vimrc
.
vim
set laststatus=2

If the statusline is not coloured like lightline.vim - tutorial

then modify

TERM
in your shell configuration (
.zshrc
for example)
sh
export TERM=xterm-256color
and then add the following configuration to your
.vimrc
.
vim
if !has('gui_running')
  set t_Co=256
endif

Your statusline appears to work correctly? If yes, great, thanks for choosing lightline.vim! If no, please file an issue report to the issue tracker.

By the way,

-- INSERT --
is unnecessary anymore because the mode information is displayed in the statusline. lightline.vim - tutorial If you want to get rid of it, configure as follows.
vim
set noshowmode

Colorscheme configuration

The lightline.vim plugin provides multiple colorschemes to meet your editor colorscheme. Do not be confused, editor colorscheme rules how codes look like in buffers and lightline.vim has independent colorscheme feature, which rules how the statusline looks like.

If you are using wombat colorscheme, add the following setting to your

.vimrc
,
vim
let g:lightline = {
      \ 'colorscheme': 'wombat',
      \ }
restart Vim and the statusline looks like:

lightline.vim - tutorial

If the colors of the statusline do not change, move the settings of

g:lightline
before setting the editor colorscheme.

There are many lightline colorschemes available as screenshots shown above. See

:h g:lightline.colorscheme
for the complete list.

Advanced configuration

The default appearance of lightline.vim is carefully designed that the tutorial is enough here for most people. So please read this section if you really want to configure and enjoy the configurability of lightline.vim.

Sometimes people want to display information of other plugins. For example git branch information, syntax check errors and some statuses of plugins.

The lightline.vim plugin does not provide any plugin integration by default. This plugin considers orthogonality to be one of the important ideas, which means that the plugin does not rely on implementation of other plugins. Once a plugin starts to integrate with some famous plugins, it should be kept updated to follow the changes of the plugins, and should accept integration requests with new plugins and it will suffer from performance regression due to plugin availability checks.

Instead, lightline.vim provides a simple API that user can easily integrate with other plugins. Once you understand how to configure and how it will be displayed in the statusline, you can also tell how to integrate with your favorite plugins.

Let's start to configure the appearance. The statusline is composed of multiple components. It shows the current mode, filename, modified status on the left, and file format, encoding, filetype and cursor positions on the right. So in order to add something in the statusline, you firstly create a new component and specify the place.

This is the hello world of lightline.vim component.

vim
let g:lightline = {
      \ 'colorscheme': 'wombat',
      \ 'active': {
      \   'left': [ [ 'mode', 'paste' ],
      \             [ 'readonly', 'filename', 'modified', 'helloworld' ] ]
      \ },
      \ 'component': {
      \   'helloworld': 'Hello, world!'
      \ },
      \ }
The statusline will look like: lightline.vim - tutorial

You have succeeded in displaying

Hello, world!
in the statusline. The
helloworld
component is added to
g:lightline.active.left
and its content is configured in
g:lightline.component
. The component contents are simply added to
&statusline
. Try
:echo &statusline
, it might be a little bit complicated, but you will find
Hello, world!
somewhere.

You can use

'statusline'
syntax for lightline.vim components. Consult
:h 'statusline'
to see what's available here. For example, if you want to print the value of character under the cursor in hexadecimal, configure as
vim
let g:lightline = {
      \ 'colorscheme': 'wombat',
      \ 'active': {
      \   'left': [ [ 'mode', 'paste' ],
      \             [ 'readonly', 'filename', 'modified', 'charvaluehex' ] ]
      \ },
      \ 'component': {
      \   'charvaluehex': '0x%B'
      \ },
      \ }
lightline.vim - tutorial

You want the character value information on the right hand side? OK, configure as

vim
let g:lightline = {
      \ 'colorscheme': 'wombat',
      \ 'active': {
      \   'right': [ [ 'lineinfo' ],
      \              [ 'percent' ],
      \              [ 'fileformat', 'fileencoding', 'filetype', 'charvaluehex' ] ]
      \ },
      \ 'component': {
      \   'charvaluehex': '0x%B'
      \ },
      \ }
lightline.vim - tutorial

We have learned how to add a simple component.

  • See
    :h 'statusline'
    to check the statusline flags.
  • Add a new component to
    g:lightline.component
    .
  • Add the component name to
    g:lightline.active.left
    or
    g:lightline.active.right
    .

You can also configure the statusline of inactive buffers by adding the component to

g:lightline.inactive.left
or
g:lightline.inactive.right
.

Now let's add some integrations with other plugin. The name of the git branch is important these days. But lightline.vim does not provide this information by default because it is also one of plugin crossing configurations, and not all people want the integration.

In order to show the branch name in the statusline, install some plugins which provide the branch information. The vim-fugitive plugin is a famous plugin so let's integrate lightline.vim with it. If you don't like to install full git integration but just want to display the branch name in the statusline, you can use the vim-gitbranch plugin which provides

gitbranch#name
function.
vim
let g:lightline = {
      \ 'colorscheme': 'wombat',
      \ 'active': {
      \   'left': [ [ 'mode', 'paste' ],
      \             [ 'gitbranch', 'readonly', 'filename', 'modified' ] ]
      \ },
      \ 'component_function': {
      \   'gitbranch': 'FugitiveHead'
      \ },
      \ }
lightline.vim - tutorial

Okay, now the statusline shows that we are coding at the master branch. What do we learn from this example?

  • Find out the function which is suitable to use in the statusline.
  • Create a function component. The previous
    charvaluehex
    component has
    'statusline'
    item configuration and registered in
    g:lightline.component
    . In the current example, we register the name of the function in
    g:lightline.component_function
    . It should return the string to be displayed in the statusline.
  • Add the component name
    gitbranch
    to
    g:lightline.active.left
    or
    g:lightline.active.right
    .

Here we have leaned two kinds of components.

  • component: it has a
    %
    -prefixed item which you can find the meaning at
    :h 'statusline'
    . All the default components of lightline.vim are components in this style. See the default components at
    :h g:lightline.component
    .
  • function component: the name of functions are registered. The function is called again and again so be careful not to register a heavy function. See the help with
    :h g:lightline.component_function
    .

The function component is an important design for the configurability of lightline.vim. By providing the configuration interface via functions, you can adjust the statusline information as you wish. For the proof, let's look into some configuration examples in Q&A style.

Can I hide the readonly component in the help buffer?

Yes, create a function component for

readonly
. The configuration of function component has priority over the default component. ```vim let g:lightline = { \ 'component_function': { \ 'readonly': 'LightlineReadonly', \ }, \ }

function! LightlineReadonly() return &readonly && &filetype !=# 'help' ? 'RO' : '' endfunction ``` lightline.vim - tutorial

Can I hide the readonly component in other plugins buffer?

Yes, modify the

LightlineReadonly
function as you wish. ```vim function! LightlineReadonly() return &readonly && &filetype !~# '\v(help|vimfiler|unite)' ? 'RO' : '' endfunction

let g:uniteforceoverwritestatusline = 0 let g:vimfilerforceoverwritestatusline = 0 ``` lightline.vim - tutorial

Can I display the plugin information at the filename component?

Yes, overwrite the filename component. ```vim let g:lightline = { \ 'component_function': { \ 'filename': 'LightlineFilename', \ }, \ }

function! LightlineFilename() return &filetype ==# 'vimfiler' ? vimfiler#getstatusstring() : \ &filetype ==# 'unite' ? unite#getstatusstring() : \ &filetype ==# 'vimshell' ? vimshell#getstatusstring() : \ expand('%:t') !=# '' ? expand('%:t') : '[No Name]' endfunction

let g:uniteforceoverwritestatusline = 0 let g:vimfilerforceoverwritestatusline = 0 let g:vimshellforceoverwrite_statusline = 0 ``` lightline.vim - tutorial

Can I display the plugin name at the mode component?

Yes, overwrite the mode component. ```vim let g:lightline = { \ 'component_function': { \ 'mode': 'LightlineMode', \ }, \ }

function! LightlineMode() return expand('%:t') =~# '^Tagbar' ? 'Tagbar': \ expand('%:t') ==# 'ControlP' ? 'CtrlP' : \ &filetype ==# 'unite' ? 'Unite' : \ &filetype ==# 'vimfiler' ? 'VimFiler' : \ &filetype ==# 'vimshell' ? 'VimShell' : \ lightline#mode() endfunction ``` lightline.vim - tutorial

Can I trim the file format and encoding information on narrow windows?

Yes, check

winwidth(0)
and return empty string with some threshold. ```vim let g:lightline = { \ 'component_function': { \ 'fileformat': 'LightlineFileformat', \ 'filetype': 'LightlineFiletype', \ }, \ }

function! LightlineFileformat() return winwidth(0) > 70 ? &fileformat : '' endfunction

function! LightlineFiletype() return winwidth(0) > 70 ? (&filetype !=# '' ? &filetype : 'no ft') : '' endfunction ``` lightline.vim - tutorial

Can I trim the bar between the filename and modified sign?

Yes, by joining the two components. ```vim let g:lightline = { \ 'active': { \ 'left': [ [ 'mode', 'paste' ], \ [ 'readonly', 'filename' ] ], \ }, \ 'component_function': { \ 'filename': 'LightlineFilename', \ }, \ }

function! LightlineFilename() let filename = expand('%:t') !=# '' ? expand('%:t') : '[No Name]' let modified = &modified ? ' +' : '' return filename . modified endfunction ``` lightline.vim - tutorial

You can control the visibility and contents by writing simple functions. Now you notice how much function component is important for the configurability of lightline.vim.

more tips

Mode names are too long. Can I use shorter mode names?

Yes, configure

g:lightline.mode_map
.
vim
let g:lightline = {
      \ 'mode_map': {
        \ 'n' : 'N',
        \ 'i' : 'I',
        \ 'R' : 'R',
        \ 'v' : 'V',
        \ 'V' : 'VL',
        \ "\": 'VB',
        \ 'c' : 'C',
        \ 's' : 'S',
        \ 'S' : 'SL',
        \ "\": 'SB',
        \ 't': 'T',
        \ },
      \ }

How can I truncate the components from the right in narrow windows?

Please include

%<
to one of the right components.
vim
let g:lightline = {
      \ 'component': {
      \   'lineinfo': '%3l:%-2v%

Where can I find the default components?

See

:h g:lightline.component
.

Note for developers of other plugins

Appearance consistency matters.

The statusline is an important space for Vim users. Overwriting the statusline forcibly in your plugin is not a good idea. It is not hospitality, but just an annoying feature. If your plugin has such a feature, add an option to be modest.

A good design is as follows. Firstly, give the users a clue to judge which buffer is the one your plugin creates. The filename is a manner and the filetype is another. Then, export a function which is useful to be shown in the statusline. Lastly, for advanced users, set important information in buffer variables so that the users can obtain the condition of the plugin easily.

Author

itchyny (https://github.com/itchyny)

License

This software is released under the MIT License, see LICENSE.

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