patch 8.2.0554: the GUI doesn't set t_Co Commit: https://github.com/vim/vim/commit/acc770a10f65107131473ea2ab4ae5d429dfe172 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 12 15:11:06 2020 +0200 patch 8.2.0554: the GUI doesn't set t_Co Problem: The GUI doesn't set t_Co. Solution: In the GUI set t_Co to 256 * 256 * 256. (closes https://github.com/vim/vim/issues/5903)

" Provide 'PrintVer' command to print the interface versions.

func s:print_ver(lang, ...)
  if has(a:lang)
    exec a:lang join(a:000)
  else
    echo 'N/A'
  endif
  echo ''
endfunc

command -nargs=+ PrintVer call <SID>print_ver(<f-args>)