Revert "Performence improvments (#205)" (#212)

This reverts commit 141417de61.

lua/lualine/highlight.lua

@@ -1,10 +1,11 @@
 -- Copyright (c) 2020-2021 hoob3rt
 -- MIT license, see LICENSE for more details.
 local M = {}
-local cterm_colors
+local utils_colors = require 'lualine.utils.cterm_colors'
 local utils = require 'lualine.utils.utils'
 local section_highlight_map = {x = 'c', y = 'b', z = 'a'}
 local active_theme = nil
+local cterm_colors = false
 
 function M.highlight(name, foreground, background, gui, reload)
   local command = {'highlight', name}
@@ -12,14 +13,14 @@ function M.highlight(name, foreground, background, gui, reload)
     table.insert(command, 'guifg=' .. foreground)
     if cterm_colors then
       table.insert(command,
-                   'ctermfg=' .. cterm_colors.get_cterm_color(foreground))
+                   'ctermfg=' .. utils_colors.get_cterm_color(foreground))
     end
   end
   if background and background ~= 'none' then
     table.insert(command, 'guibg=' .. background)
     if cterm_colors then
       table.insert(command,
-                   'ctermbg=' .. cterm_colors.get_cterm_color(background))
+                   'ctermbg=' .. utils_colors.get_cterm_color(background))
     end
   end
   if gui then
@@ -35,9 +36,7 @@ end
 function M.create_highlight_groups(theme)
   utils.clear_highlights()
   active_theme = theme
-  if not vim.o.termguicolors then
+  cterm_colors = not vim.o.termguicolors
-    cterm_colors = require 'lualine.utils.cterm_colors'
-  end
   for mode, sections in pairs(theme) do
     for section, colorscheme in pairs(sections) do
       local highlight_group_name = {'lualine', section, mode}

lua/lualine/init.lua

@@ -5,6 +5,7 @@ local highlight = require('lualine.highlight')
 local config = {}
 
 local function apply_configuration(config_table)
+  if not config_table then return end
   local function parse_sections(section_group_name)
     if not config_table[section_group_name] then return end
     for section_name, section in pairs(config_table[section_group_name]) do
@@ -80,8 +81,6 @@ local function component_loader(component)
 end
 
 local function load_sections(sections)
-  local async_loader
-  async_loader = vim.loop.new_async(vim.schedule_wrap(function()
   for section_name, section in pairs(sections) do
     for index, component in pairs(section) do
       if type(component) == 'string' or type(component) == 'function' then
@@ -94,9 +93,6 @@ local function load_sections(sections)
       section[index] = component_loader(component)
     end
   end
-    async_loader:close()
-  end))
-  async_loader:send()
 end
 
 local function load_components()
@@ -238,8 +234,6 @@ end
 local function tabline() return statusline(config.tabline, true) end
 
 local function setup_theme()
-  local async_loader
-  async_loader = vim.loop.new_async(vim.schedule_wrap(function()
   local function get_theme_from_config()
     local theme_name = config.options.theme
     if type(theme_name) == 'string' then
@@ -265,9 +259,6 @@ local function setup_theme()
   autocmd ColorScheme * lua require'lualine.utils.utils'.reload_highlights()
   augroup END
   ]], false)
-    async_loader:close()
-  end))
-  async_loader:send()
 end
 
 local function set_tabline()
@@ -281,10 +272,8 @@ local function set_statusline()
   if next(config.sections) ~= nil or next(config.inactive_sections) ~= nil then
     vim.o.statusline = '%!v:lua.require\'lualine\'.statusline()'
     vim.api.nvim_exec([[
-  augroup lualine
+    autocmd lualine WinLeave,BufLeave * lua vim.wo.statusline=require'lualine'.statusline()
-    autocmd WinLeave,BufLeave * lua vim.wo.statusline=require'lualine'.statusline()
+    autocmd lualine WinEnter,BufEnter * set statusline<
-    autocmd WinEnter,BufEnter * set statusline<
-  augroup END
     ]], false)
   end
 end

lua/lualine/utils/section.lua

@@ -7,9 +7,6 @@ function M.draw_section(section, highlight_name)
   local status = {}
   for _, component in pairs(section) do
     -- load components into status table
-    if type(component) ~= 'table' or (type(component) == 'table' and not component.component_no) then
-      return '' -- unknown element in section. section posibly not yet loaded
-    end
     table.insert(status, component:draw(highlight_name))
   end