lualine.nvim/doc/lualine.txt

*lualine.txt*                      blazing fast and easy to configure statusline
                                                          *lualine.nvim* *lualine*
   __         __  __     ______     __         __     __   __     ______
  /\ \       /\ \/\ \   /\  __ \   /\ \       /\ \   /\ "-.\ \   /\  ___\
  \ \ \____  \ \ \_\ \  \ \  __ \  \ \ \____  \ \ \  \ \ \-.  \  \ \  __\
   \ \_____\  \ \_____\  \ \_\ \_\  \ \_____\  \ \_\  \ \_\\"\_\  \ \_____\
    \/_____/   \/_____/   \/_/\/_/   \/_____/   \/_/   \/_/ \/_/   \/_____/

Author: hoob3rt (https://github.com/hoob3rt)
License: MIT License
Repository: https://github.com/hoob3rt/lualine.nvim

==============================================================================
CONTENTS                                                      *lualine-contents*

1. lualine.nvim..........................................|lualine-lualine.nvim|
    1.1. Usage and customization..............|lualine-usage_and_customization|
      1.1.1 Starting lualine.........................|lualine-starting_lualine|
      1.1.2 Setting a theme.....................................|lualine-theme|
      1.1.3 Separators.....................................|lualine-separators|
      1.1.4 Changing components............................|lualine-components|
      1.1.5 Custom components.......................|lualine-custom_components|
      1.1.6 Component options.......................|lualine-component_options|
      1.1.7 Tabline...........................................|lualine-tabline|
      1.1.8 Extensions.....................................|lualine-extensions|
      1.1.8 Disabling lualine.................................|lualine-disable|

==============================================================================
USAGE AND CUSTOMIZATION                        *lualine-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.

Default config~
>
    require'lualine'.setup {
      options = {
        icons_enabled = true,
        theme = 'gruvbox',
        component_separators = {'', ''},
        section_separators = {'', ''},
        disabled_filetypes = {}
      },
      sections = {
        lualine_a = {'mode'},
        lualine_b = {'branch'},
        lualine_c = {'filename'},
        lualine_x = {'encoding', 'fileformat', 'filetype'},
        lualine_y = {'progress'},
        lualine_z = {'location'}
      },
      inactive_sections = {
        lualine_a = {},
        lualine_b = {},
        lualine_c = {'filename'},
        lualine_x = {'location'},
        lualine_y = {},
        lualine_z = {}
      },
      tabline = {},
      extensions = {}
    }

------------------------------------------------------------------------------
STARTING LUALINE                      *lualine-starting_lualine* *lualine.setup()*
>
    require('lualine').setup()

------------------------------------------------------------------------------
SETTING A THEME                                                  *lualine-theme*
>
    options = {theme = 'gruvbox'}

Available themes are listed here:
https://github.com/hoob3rt/lualine.nvim/blob/master/THEMES.md

Customizing themes~
>
    local custom_gruvbox = require'lualine.themes.gruvbox'

    -- Change the background of lualine_c section for normal mode
    custom_gruvbox.normal.c.bg = '#112233' -- rgb colors are supported

    require'lualine'.setup{
      options = { theme  = custom_gruvbox },
      ...
    }
<
Theme structure is available here:
https://github.com/hoob3rt/lualine.nvim/blob/master/CONTRIBUTING.md#adding-a-theme

------------------------------------------------------------------------------
SEPARATORS                                                  *lualine-separators*

Lualine defines two kinds of seperators:
    *   |section_separators| - separators between sections
    *   |components_separators| - separators between components in sections
>
    options = {
      section_separators = {'', ''},
      component_separators = {'', ''}
    }

Disabling separators~
>
    options = {section_separators = '', component_separators = ''}

------------------------------------------------------------------------------
CHANGING COMPONENTS IN LUALINE SECTIONS                     *lualine-components*

    `sections = {lualine_a = {'mode'}}`

Available components~
    general~
        *   |branch| (git branch)
        *   |diagnostics| (diagnostics count from your preferred source)
        *   |encoding| (file encoding)
        *   |fileformat| (file format)
        *   |filename|
        *   |filetype|
        *   |hostname|
        *   |location| (location in file in line:column format)
        *   |mode| (vim mode)
        *   |progress| (%progress in file)
        *   |diff| (git diff status)

------------------------------------------------------------------------------
CUSTOM COMPONENTS                                    *lualine-custom_components*

Lua functions as lualine component~
>
    local function hello()
      return [[hello world]]
    end
    sections = {lualine_a = {hello}}
<
Vim functions as lualine component~
>
    sections = {lualine_a = {'FugitiveHead'}}
<
Vim variables as lualine component~

Variables from `g:`, `v:`, `t:`, `w:`, `b:`, `o`, `go:`, `vo:`, `to:`, `wo:`, `bo:` scopes can be used.
See `:h lua-vim-variables` and `:h lua-vim-options` if you are not sure what to use.
>
    sections = {lualine_a = {'g:coc_status', 'bo:filetype'}}
<
Lua expressions as lualine component~

You can use any valid lua expression as a component including
    *   oneliners
    *   global variables
    *   require statements
>
    sections = {lualine_c = {"os.data('%a')", 'data', require'lsp-status'.status}}

`data` is a global variable in this example.

------------------------------------------------------------------------------
COMPONENT OPTIONS                                    *lualine-component_options*

Component options can change the way a component behave.
There are two kinds of options:
    *   global options affecting all components
    *   local options affecting specific

Global options can be used as local options (can be applied to specific components)
but you cannot use local options as global.
Global option used locally overwrites the global, for example:
>
    require'lualine'.setup {
      options = {lower = true},
      sections = {lualine_a = {{'mode', lower = false}}, lualine_b = {'branch'}}
    }

`mode` will be displayed with `lower = false` and `branch` will be displayed with `lower = true`

Available options:~

Global options~
---------------
>
  options = {
    icons_enabled = 1, -- displays icons in alongside component
    padding = 1, -- adds padding to the left and right of components
    left_padding = 1, -- adds padding to the left of components
    right_padding =1, -- adds padding to the right of components
    upper = false, -- displays components in uppercase
    lower = false, -- displays components in lowercase
    format = nil -- format function, formats component's output
  }

Local options~
---------------
>
  sections = {
    lualine_a = {
      {
        'mode',
        icon = nil, -- displays icon in front of the component
      separator = nil, -- Determines what separator to use for the component.
        condition = nil, -- condition function, component is loaded when function returns true
        -- custom color for component in format
        -- color = {fg = '#rrggbb', bg= '#rrggbb', gui='style'}
        -- or highlight group
        -- color = "WarningMsg"
        color = nil
      }
    }
  }

Component specific local options~
---------------

* diagnostics~
  >
  sections = {
    lualine_a = {
      {
        'diagnostics',
        -- table of diagnostic sources, available sources:
        -- nvim_lsp, coc, ale, vim_lsp
        sources = nil,
        -- displays diagnostics from defined severity
        sections = {'error', 'warn', 'info', 'hint'},
        -- all colors are in format #rrggbb
        color_error = nil, -- changes diagnostic's error foreground color
        color_warn = nil, -- changes diagnostic's warn foreground color
        color_info = nil, -- Changes diagnostic's info foreground color
        color_hint = nil, -- Changes diagnostic's hint foreground color
        symbols = {error = 'E', warn = 'W', info = 'I', hint = 'H'}
        update_in_insert = false, -- Update diagnostics in insert mode
      }
    }
  }

* filename~
>
  sections = {
    lualine_a = {
      {
        'filename',
        file_status = true, -- displays file status (readonly status, modified status)
        path = 0 -- 0 = just filename, 1 = relative path, 2 = absolute path
      }
    }
  }

* filetype~
>
  sections = {
    lualine_a = {
      {
        'filetype',
        colored = true, -- displays filetype icon in color if set to `true`
        disable_text = false -- Display only icon for filetype
      }
    }
  }
<

* diff~
>
  sections = {
    lualine_a = {
      {
        'diff',
        colored = true, -- displays diff status in color if set to true
        -- all colors are in format #rrggbb
        color_added = nil, -- changes diff's added foreground color
        color_modified = nil, -- changes diff's modified foreground color
        color_removed = nil, -- changes diff's removed foreground color
        symbols = {added = '+', modified = '~', removed = '-'} -- changes diff symbols
        source = nil, -- A function that works as a data source for diff.
                      -- it must return a table like
                      {added = add_count, modified = modified_count, removed = removed_count }
                      -- Or nil on failure. Count <= 0 won't be displayed.
      }
    }
  }

------------------------------------------------------------------------------
TABLINE                                                        *lualine-tabline*

You can use lualine to display components in tabline.
The configuration for tabline sections is exactly the same as for statusline.
>
    tabline = {
      lualine_a = {},
      lualine_b = {'branch'},
      lualine_c = {'filename'},
      lualine_x = {},
      lualine_y = {},
      lualine_z = {},
    }
<
This will show branch and filename component on top of neovim inside tabline.

You can also completely move your statuline to tabline by configuring 
|lualine.tabline| and disabling |lualine.sections| and |lualine.inactive_sections|.
>
    tabline = {
    ......
      }
    sections = {}
    inactive_sections = {}

------------------------------------------------------------------------------
EXTENSIONS                                                  *lualine-extensions*

Lualine extensions change statusline appearance for a window/buffer with
specified filetypes.

By default no extension are loaded to improve performance. 
You can load extensions with:
>
    extensions = {'quickfix'}
<
Available extensions~
    * |chadtree|
    * |fugitive|
    * |fzf|
    * |nerdtree|
    * |nvim-tree|
    * |quickfix|
    *

Custom extensions~

You can define your own extensions.
If you think an extension might be useful for others then please submit a pr.
>
    local my_extension = {sections = {lualine_a = 'mode'}, filetypes = {'lua'}}
    require'lualine'.setup {extensions = {my_extension}}

------------------------------------------------------------------------------
DISABLING LUALINE                                              *lualine-disable*

You can disable lualine for specific filetypes

`options = {disabled_filetypes = {'lua'}}`
------------------------------------------------------------------------------
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