Merge pull request #129 from Reptarsrage/main

Allowing colors to be functions

README.md

@@ -159,9 +159,9 @@ You can also use the source of the provider function.
 - `icon` is a string that will be added to the head of the provider result.
     It can also be a function that returns a string.
 
-- `highlight` can be used in two ways.  The first is to pass three elements: the first element is `fg`, the second is `bg`, and the third is `gui`. The second method is to pass a highlight group as a string (such as `IncSearch`) that galaxyline will link to.
+- `highlight` is a string, function or table that can be used in two ways.  The first is to pass three elements: the first element is `fg`, the second is `bg`, and the third is `gui`. The second method is to pass a highlight group as a string (such as `IncSearch`) that galaxyline will link to.
 
-- `separator` is a string or table. notice that table type only work in mid section, It is not just a separator. Any statusline item can be
+- `separator` is a string, function or table. notice that table type only work in mid section, It is not just a separator. Any statusline item can be
     defined here, like `%<`,`%{}`,`%n`, and so on.
 
 - `separator_highlight` same as highlight

lua/galaxyline/colors.lua

@@ -33,6 +33,12 @@ setmetatable(_switch,_switch_metatable)
 local function set_highlight(group, hi_info)
   local fg,bg,style = 'fg','bg',''
 
+  if type(hi_info) == 'function' then
+    hi_info = hi_info()
+  end
+
+  if hi_info == nil then return end
+
   if type(hi_info) == 'string' then
     api.nvim_command('highlight link ' .. group .. ' ' .. hi_info)
     return