patch 8.2.4646: using buffer line after it has been freed Commit: https://github.com/vim/vim/commit/b55986c52d4cd88a22d0b0b0e8a79547ba13e1d5 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Mar 29 13:24:58 2022 +0100 patch 8.2.4646: using buffer line after it has been freed Problem: Using buffer line after it has been freed in old regexp engine. Solution: After getting mark get the line again.

" 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>)