patch 8.2.0435: channel contents might be freed twice Commit: https://github.com/vim/vim/commit/dbbb0ef729e392e313ccc63c247bff1b828a214d Author: Bram Moolenaar <Bram@vim.org> Date: Mon Mar 23 22:01:17 2020 +0100 patch 8.2.0435: channel contents might be freed twice Problem: Channel contents might be freed twice. Solution: Call either channel_free_channel() or channel_free(), not both. (Nobuhiro Takasaki, closes #5835)

" 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>)