patch 8.2.2792: Vim9: :disas shows instructions for default args but no text Commit: https://github.com/vim/vim/commit/9ce47ec0b65f81358febacbd9b808ac8ef7af85c Author: Bram Moolenaar <Bram@vim.org> Date: Tue Apr 20 22:16:39 2021 +0200 patch 8.2.2792: Vim9: :disas shows instructions for default args but no text Problem: Vim9: :disas shows instructions for default args but no text. Solution: Show the expression test above the default argument instructions. (closes #8129)

" 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>)