patch 8.2.3427: double free when list is copied Commit: https://github.com/vim/vim/commit/b3bf33a7b227df871834e816c4ce4b2706b56bea Author: Bram Moolenaar <Bram@vim.org> Date: Sat Sep 11 20:20:38 2021 +0200 patch 8.2.3427: double free when list is copied Problem: Double free when list is copied. Solution: Allocate the type when making a copy. (closes https://github.com/vim/vim/issues/8862) Clear the type for flattennew(). Avoid a memory leak when flattennew() fails.

" 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>)