patch 8.2.3237: when a builtin function gives an error processing continues Commit: https://github.com/vim/vim/commit/327d3ee4557027b51aad86e68743a85ed3a6f52b Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 28 19:34:14 2021 +0200 patch 8.2.3237: when a builtin function gives an error processing continues Problem: When a builtin function gives an error processing continues. Solution: In Vim9 script return FAIL in get_func_tv().

" 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>)