patch 8.2.2306: Vim9: when using function reference type is not checked Commit: https://github.com/vim/vim/commit/32b3f820107139d7edf0c592bb06f090c3eb6c51 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jan 6 21:59:39 2021 +0100 patch 8.2.2306: Vim9: when using function reference type is not checked Problem: Vim9: when using function reference type is not checked. Solution: When using a function reference lookup the type and check the argument types. (issue #7629)

" 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>)