fix: highlight not modifiable (s1n7ax#27)

* use nvim api to set hl

* don't re-create highlight groups on every window pick

* use uniform api reference for hl api

- Changes to before add hl variable to use the api variable like
  the rest of the plugin does.

Author: ttytm

lua/window-picker/init.lua

@@ -124,12 +124,6 @@ function M.pick_window(custom_config)
     local laststatus = v.o.laststatus
     local cmdheight = v.o.cmdheight
 
-    -- setting highlight groups
-    -- NOTE: somethig clears out the highlights so this needs to be in pick
-    -- window function
-    v.cmd(('highlight NvimWindoSwitch gui=bold guifg=%s guibg=%s'):format(conf.fg_color, conf.current_win_hl_color))
-    v.cmd(('highlight NvimWindoSwitchNC gui=bold guifg=%s guibg=%s'):format(conf.fg_color, conf.other_win_hl_color))
-
     local selectable = nil
 
     if conf.filter_func then
@@ -238,6 +232,9 @@ function M.setup(custom_config)
         config = v.tbl_deep_extend('force', config, custom_config)
     end
 
+    api.nvim_set_hl(0, 'NvimWindoSwitch', { fg = config.fg_color, bg = config.current_win_hl_color, bold = true })
+    api.nvim_set_hl(0, 'NvimWindoSwitchNC', { fg = config.fg_color, bg = config.other_win_hl_color, bold = true })
+
     M.setup_completed = true
 end