patch 8.2.0109: corrupted text properties when expanding spaces Commit: https://github.com/vim/vim/commit/ac15fd8c6761763c8feedef1a2fbd8309f0a823c Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 9 21:35:48 2020 +0100 patch 8.2.0109: corrupted text properties when expanding spaces Problem: Corrupted text properties when expanding spaces. Solution: Reallocate the line. (Nobuhiro Takasaki, closes https://github.com/vim/vim/issues/5457)

" Test if fnameescape is correct for special chars like !
func Test_fnameescape()
  let fname = 'Xspa ce'
  let status = v:false
  try
    exe "w! " . fnameescape(fname)
    let status = v:true
  endtry
  call assert_true(status, "Space")
  call delete(fname)

  let fname = 'Xemark!'
  let status = v:false
  try
    exe "w! " . fname->fnameescape()
    let status = v:true
  endtry
  call assert_true(status, "ExclamationMark")
  call delete(fname)
endfunc