# lualine.nvim
A blazing fast and easy to configure neovim statusline written in pure lua.
`lualine.nvim` requires neovim 0.5
## Contributing
Please read [CONTRIBUTING.md](./CONTRIBUTING.md) before contributing.
You can check [this](https://github.com/hoob3rt/lualine.nvim/projects/3) out if you want to see what is currently being worked on.
Feel free to create an issue/pr if you want to see anything else implemented.
## Screenshots
Here is a preview of how lualine can look like.
Screenshots of all available themes are listed in [THEMES.md](./THEMES.md)
## Performance compared to other plugins
Unlike other statusline plugins lualine loads only defined components, nothing else.
Startup time performance measured with an amazing plugin [tweekmonster/startuptime.vim](https://github.com/tweekmonster/startuptime.vim)
All times are measured with only `startuptime.vim` and given statusline plugin installed
| clean vimrc | lualine | lightline | airline |
| :------------: | :----------: | :----------: | :----------: |
| 8.943 ms | 9.034 ms | 11.463 ms | 13.425 ms |
## Installation
### [vim-plug](https://github.com/junegunn/vim-plug)
```vim
Plug 'hoob3rt/lualine.nvim'
" If you want to have icons in your statusline choose one of these
Plug 'kyazdani42/nvim-web-devicons'
Plug 'ryanoasis/vim-devicons'
```
### [packer.nvim](https://github.com/wbthomason/packer.nvim)
```lua
use {
'hoob3rt/lualine.nvim',
requires = {'kyazdani42/nvim-web-devicons', opt = true}
}
```
## Usage and customization
Lualine has sections as shown below.
```
+-------------------------------------------------+
| A | B | C X | Y | Z |
+-------------------------------------------------+
```
Each sections holds it's components e.g. current vim's mode.
Colorscheme of sections is mirrored, meaning section `A` will have the same colorscheme as section `Z` etc.
Configuration is currently limited to lua, please use lua block or a separate lua file to configure lualine.
### Starting lualine
```lua
local lualine = require('lualine')
lualine.status()
```
### Setting a theme
```lua
lualine.options.theme = 'gruvbox'
```
All available themes are listed in [THEMES.md](./THEMES.md)
Please create a pr if you managed to port a popular theme before me, [here is how to do it](./CONTRIBUTING.md).
### Changing separator in section
Lualine defines two kinds of seperators. One is for sections and other is for components. Default section seperators are '', '' and component separators are '', ''.
They require powerline patched fonts. But you can easily change yours to something else like below
```lua
lualine.section_separators = {'', ''}
lualine.component_separators = {'', ''}
```
or disable it
```lua
lualine.section_separators = nil
lualine.component_separators = nil
```
### Changing components in lualine sections
Lualine defaults
```lua
lualine.sections = {
lualine_a = { 'mode' },
lualine_b = { 'branch' },
lualine_c = { 'filename' },
lualine_x = { 'encoding', 'fileformat', 'filetype' },
lualine_y = { 'progress' },
lualine_z = { 'location' },
}
lualine.inactive_sections = {
lualine_a = { },
lualine_b = { },
lualine_c = { 'filename' },
lualine_x = { 'location' },
lualine_y = { },
lualine_z = { }
}
```
Available components
* general
* branch
* encoding
* fileformat
* filename
* filetype
* location
* mode
* progress
* plugin
* signify
Using custom functions as lualine component
You can define a custom function as a lualine component
```lua
local function hello()
return [[hello world]]
end
lualine.sections.lualine_a = { hello }
```
Using vim functions as lualine component
You can use vim functions as a lualine component
```
lualine.sections.lualine_b = { 'FugitiveHead' }
```
Using variables as lualine component
You can use variables from vim and lua globals as a lualine component
Variables from g:, v:, t:, w:, b:, o, go:, vo:, to:, wo:, bo: scopes
can be used. Scopes ending with o are options usualy accessed with `&` in vimscript
```
lualine.sections.lualine_b = { 'g:coc_status', 'bo:filetype' }
```
Options for components
### Available options:
#### Global options
Global options chnge behaviour of all suported components.
All of these options can also be specifically set to all supported components, full example below.
##### Available global options
Option | Default | Behaviour | Supported components
:------: | :------: | :----------: | :-----:
icons_enabled | true | Displays icons on components You should have powerline supported fonts to see icons properly. | branch, fileformat, filetype, location
padding | 1 | Adds padding to the left and right of components | all
left_padding | 1 | Adds padding to the left of components | all
right_padding | 1 | Adds padding to the right of components | all
upper | false | Changes components to be uppercase | all
lower | false | Changes components to be lowercase | all
format | nil | Takes a function . The funtion gets the result of component as argument and it's return value is displayed. So this function can parse and format the output as user wants. | all
##### Global options example:
```lua
lualine.options.icons_enabled = true
```
#### Component specific options
As mentioned above, all global options can be applied to specific components.
However there are some options which are component-only (you cannot set them as globals)
Option | Default | Behaviour
:------: | :------: | :----:
icon | Differs for each component | Displays an icon in front of the component
color | nil | Sets custom color for the component in this format
`color = {fg = '#rrggbb', bg= '#rrggbb', gui='style'}`
The fields of color table are optional and default to theme
In addition, some components have unique options.
* `filename` component options
Option | Default | Behaviour
:------: | :------: | :----:
file_status | true | Displays file status (readonly status, modified status)
full_path | false | Displays relative path if set to `true`, absolute path if set to `false`
shorten | true | if `full_path` is true and `shorten` is `false` it shortens absolute path `aaa/bbb/ccc/file` to `a/b/c/file`
* `signify` component options
Option | Default | Behaviour
:------: | :------: | :----:
colored | true | displays signify status in color if set to `true`
color_added | `diffAdd` foreground color | changes signify's added section foreground color
color_modified | `diffChange` foreground color | changes signify's changed section foreground color
color_removed | `diffDelete` foreground color | changes signify's removed section foreground color
**Example:**
```lua
lualine.sections.lualine_b = {
{
'branch',
icon = '',
upper = true,
color = { fg = '#00aa22' }
},
{
'filename',
full_name = true,
shorten = true,
format = function(name)
-- Capitalize first charecter of filename to capital.
local path, fname = name:match('(.*/)(.*)')
if not path then path = ''; fname = name end
return path .. fname:sub(1, 1):upper() .. fname:sub(2, #fname)
end
}
}
```
### Loading plugin extensions
Lualine extensions change statusline appearance for a window/buffer with a plugin loaded e.g. [junegunn/fzf.vim](https://github.com/junegunn/fzf.vim)
By default no plugin extension are loaded to improve performance. If you are using a plugin which is supported you can load it this way:
```lua
lualine.extensions = { 'fzf' }
```
All available extensions are listed in [EXTENSIONS.md](./EXTENSIONS.md)
### Full config example using [packer.nvim](https://github.com/wbthomason/packer.nvim)
packer config
```lua
use {
'hoob3rt/lualine.nvim',
requires = {'kyazdani42/nvim-web-devicons', opt = true},
config = function()
local lualine = require('lualine')
lualine.options = {
theme = 'gruvbox',
section_separators = {'', ''},
component_separators = {'', ''},
icons_enabled = true,
}
lualine.sections = {
lualine_a = { 'mode' },
lualine_b = { 'branch' },
lualine_c = { 'filename' },
lualine_x = { 'encoding', 'fileformat', 'filetype' },
lualine_y = { 'progress' },
lualine_z = { 'location' },
}
lualine.inactive_sections = {
lualine_a = { },
lualine_b = { },
lualine_c = { 'filename' },
lualine_x = { 'location' },
lualine_y = { },
lualine_z = { }
}
lualine.extensions = { 'fzf' }
lualine.status()
end
}
```
### Full config example inside `.vimrc`/`init.vim`
vimrc config
```vim
lua << EOF
local lualine = require('lualine')
lualine.options = {
theme = 'gruvbox',
section_separators = {'', ''},
component_separators = {'', ''},
icons_enabled = true,
}
lualine.sections = {
lualine_a = { 'mode' },
lualine_b = { 'branch' },
lualine_c = { 'filename' },
lualine_x = { 'encoding', 'fileformat', 'filetype' },
lualine_y = { 'progress' },
lualine_z = { 'location' },
}
lualine.inactive_sections = {
lualine_a = { },
lualine_b = { },
lualine_c = { 'filename' },
lualine_x = { 'location' },
lualine_y = { },
lualine_z = { }
}
lualine.extensions = { 'fzf' }
lualine.status()
EOF
```