use {
  'nvim-lualine/lualine.nvim',
  requires = { 'kyazdani42/nvim-web-devicons', opt = true }
}

require('lualine').setup {
  options = {
    icons_enabled = true,
    theme = 'auto',
    component_separators = { left = '', right = ''},
    section_separators = { left = '', right = ''},
    disabled_filetypes = {},
    always_divide_middle = true,
  },
  sections = {
    lualine_a = {'mode'},
    lualine_b = {'branch', 'diff', 'diagnostics'},
    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 = {}
}

require('lualine').get_config()

require('lualine').setup()

options = { theme = 'gruvbox' }

local custom_gruvbox = require'lualine.themes.gruvbox'

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

require('lualine').setup {
  options = { theme  = custom_gruvbox },
  ...
}

options = {
  section_separators = { left = '', right = '' },
  component_separators = { left = '', right = '' }
}

options = { section_separators = '', component_separators = '' }

sections = {lualine_a = {'mode'}}

local function hello()
  return [[hello world]]
end
sections = { lualine_a = { hello } }

sections = { lualine_a = {'FugitiveHead'} }

sections = { lualine_c = {'%=', '%t%m', '%3p'} }

sections = { lualine_a = { 'g:coc_status', 'bo:filetype' } }

sections = { lualine_c = { "os.date('%a')", 'data', "require'lsp-status'.status()" } }

    require('lualine').setup {
      options = { fmt = string.lower },
      sections = { lualine_a = {
        { 'mode', fmt = function(str) return str:sub(1,1) end } },
                  lualine_b = {'branch'} }
    }

options = {
  theme = 'auto', -- lualine theme
  component_separators = { left = '', right = '' },
  section_separators = { left = '', right = '' },
  disabled_filetypes = {},     -- Filetypes to disable lualine for.
  always_divide_middle = true, -- When set to true, left sections i.e. 'a','b' and 'c'
                               -- can't take over the entire statusline even
                               -- if neither of 'x', 'y' or 'z' are present.
}

sections = {
  lualine_a = {
    {
      'mode',
      icons_enabled = true, -- Enables the display of icons alongside the component.
      icon = nil,           -- Defines the icon to be displayed in front of the component.

      separator = nil,      -- Determines what separator to use for the component.
                            -- Note:
                            --  When a string is provided it's treated as component_separator.
                            --  When a table is provided it's treated as section_separator.
                            --  Passing an empty string disables the separator.
                            --
                            -- These options can be used to set colored separators
                            -- around a component.
                            --
                            -- The options need to be set as such:
                            --   separator = { left = '', right = ''}
                            --
                            -- Where left will be placed on left side of component,
                            -- and right will be placed on its right.
                            --

      cond = nil,           -- Condition function, the component is loaded when the function returns `true`.

      -- Defines a custom color for the component:
      --
      -- 'highlight_group_name' | { fg = '#rrggbb'|cterm_value(0-255)|'color_name(red)', bg= '#rrggbb', gui='style' }
      -- Note:
      --  '|' is synonymous with 'or', meaning a different acceptable format for that placeholder.
      --
      -- Examples:
      --   color = { fg = '#ffaa88', bg = 'grey', gui='italic,bold' },
      --   color = { fg = 204 }   -- When fg/bg are omitted, they default to the your theme's fg/bg.
      --   color = 'WarningMsg'   -- Highlight groups can also be used.
      --
      color = nil, -- The default is your theme's color for that section and mode.

      -- Specify what type a component is, if omitted, lualine will guess it for you.
      --
      -- Available types are:
      --   [format: type_name(example)], mod(branch/filename),
      --   stl(%f/%m), var(g:coc_status/bo:modifiable),
      --   lua_expr(lua expressions), vim_fun(viml function name)
      --
      -- Note:
      -- lua_expr is short for lua-expression and vim_fun is short for vim-function.
      type = nil,

      padding = 1, -- Adds padding to the left and right of components.
                   -- Padding can be specified to left or right independently, e.g.:
                   --   padding = { left = left_padding, right = right_padding }

      fmt = nil,   -- Format function, formats the component's output.
    }
  }
}

sections = {
  lualine_a = {
    {
      'buffers',
      show_filename_only = true,   -- Shows shortened relative path when set to false.
      show_modified_status = true, -- Shows indicator when the buffer is modified.

      mode = 0, -- 0: Shows buffer name
                -- 1: Shows buffer index (bufnr)
                -- 2: Shows buffer name + buffer index (bufnr)

      max_length = vim.o.columns * 2 / 3, -- Maximum width of buffers component,
                                          -- it can also be a function that returns
                                          -- the value of `max_length` dynamically.
      filetype_names = {
        TelescopePrompt = 'Telescope',
        dashboard = 'Dashboard',
        packer = 'Packer',
        fzf = 'FZF',
        alpha = 'Alpha'
      }, -- Shows specific buffer name for that filetype ( { `filetype` = `buffer_name`, ... } )

      buffers_color = {
        -- Same values as the general color option can be used here.
        active = 'lualine_{section}_normal',     -- Color for active buffer.
        inactive = 'lualine_{section}_inactive', -- Color for inactive buffer.
      },
    }
  }
}

sections = {
  lualine_a = {
    {
      'diagnostics',

      -- Table of diagnostic sources, available sources are:
      --   'nvim_lsp', 'nvim_diagnostic', 'coc', 'ale', 'vim_lsp'.
      -- or a function that returns a table as such:
      --   { error=error_cnt, warn=warn_cnt, info=info_cnt, hint=hint_cnt }
      sources = { 'nvim_diagnostic', 'coc' },

      -- Displays diagnostics for the defined severity types
      sections = { 'error', 'warn', 'info', 'hint' },

      diagnostics_color = {
        -- Same values as the general color option can be used here.
        error = 'DiagnosticError', -- Changes diagnostics' error color.
        warn  = 'DiagnosticWarn',  -- Changes diagnostics' warn color.
        info  = 'DiagnosticInfo',  -- Changes diagnostics' info color.
        hint  = 'DiagnosticHint',  -- Changes diagnostics' hint color.
      },
      symbols = {error = 'E', warn = 'W', info = 'I', hint = 'H'},
      colored = true,           -- Displays diagnostics status in color if set to true.
      update_in_insert = false, -- Update diagnostics in insert mode.
      always_visible = false,   -- Show diagnostics even if there are none.
    }
  }
}

sections = {
  lualine_a = {
    {
      'diff',
      colored = true, -- Displays a colored diff status if set to true
      diff_color = {
        -- Same color values as the general color option can be used here.
        added    = 'DiffAdd',    -- Changes the diff's added color
        modified = 'DiffChange', -- Changes the diff's modified color
        removed  = 'DiffDelete', -- Changes the diff's removed color you
      },
      symbols = {added = '+', modified = '~', removed = '-'}, -- Changes the symbols used by the diff.
      source = nil, -- A function that works as a data source for diff.
                    -- It must return a table as such:
                    --   { added = add_count, modified = modified_count, removed = removed_count }
                    -- or nil on failure. count <= 0 won't be displayed.
    }
  }
}

sections = {
  lualine_a = {
    {
      'fileformat',
      symbols = {
        unix = '', -- e712
        dos = '',  -- e70f
        mac = '',  -- e711
      }
    }
  }
}

sections = {
  lualine_a = {
    {
      'filename',
      file_status = true,      -- Displays file status (readonly status, modified status)
      path = 0,                -- 0: Just the filename
                               -- 1: Relative path
                               -- 2: Absolute path

      shorting_target = 40,    -- Shortens path to leave 40 spaces in the window
                               -- for other components. (terrible name, any suggestions?)
      symbols = {
        modified = '[+]',      -- Text to show when the file is modified.
        readonly = '[-]',      -- Text to show when the file is non-modifiable or readonly.
        unnamed = '[No Name]', -- Text to show for unnamed buffers.
      }
    }
  }
}

sections = {
  lualine_a = {
    {
      'filetype',
      colored = true,   -- Displays filetype icon in color if set to true
      icon_only = false -- Display only an icon for filetype
    }
  }
}

sections = {
  lualine_a = {
    {
      'tabs',
      max_length = vim.o.columns / 3, -- Maximum width of tabs component.
                                      -- Note:
                                      -- It can also be a function that returns
                                      -- the value of `max_length` dynamically.
      mode = 0, -- 0: Shows tab_nr
                -- 1: Shows tab_name
                -- 2: Shows tab_nr + tab_name

      tabs_color = {
        -- Same values as the general color option can be used here.
        active = 'lualine_{section}_normal',     -- Color for active tab.
        inactive = 'lualine_{section}_inactive', -- Color for inactive tab.
      },
    }
  }
}

tabline = {
  lualine_a = {},
  lualine_b = {'branch'},
  lualine_c = {'filename'},
  lualine_x = {},
  lualine_y = {},
  lualine_z = {}
}

tabline = {
  lualine_a = {'buffers'},
  lualine_b = {'branch'},
  lualine_c = {'filename'},
  lualine_x = {},
  lualine_y = {},
  lualine_z = {'tabs'}
}

tabline = {
......
  },
sections = {},
inactive_sections = {},

extensions = {'quickfix'}

local my_extension = { sections = { lualine_a = {'mode'} }, filetypes = {'lua'} }
require('lualine').setup { extensions = { my_extension } }

options = { disabled_filetypes = {'lua'} }