patch 8.2.2209: Vim9: return type of => lambda not parsed Commit: https://github.com/vim/vim/commit/9e68c32563d8c9ffe1ac04ecd4ccd730af66b97c Author: Bram Moolenaar <Bram@vim.org> Date: Fri Dec 25 12:38:04 2020 +0100 patch 8.2.2209: Vim9: return type of => lambda not parsed Problem: Vim9: return type of => lambda not parsed. Solution: Parse and use the return type.

" 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>)