patch 8.2.0938: NFA regexp uses tolower ()to compare ignore-case Commit: https://github.com/vim/vim/commit/59de417b904bbd204e313f015839317b577bd124 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jun 9 19:34:54 2020 +0200 patch 8.2.0938: NFA regexp uses tolower ()to compare ignore-case Problem: NFA regexp uses tolower() to compare ignore-case. (Thayne McCombs) Solution: Use utf_fold() when possible. (ref. neovim https://github.com/vim/vim/issues/12456)

" Tests for saving/loading a file with some lines ending in
" CTRL-M, some not
func Test_lineending()
  let l = ["this line ends in a\<CR>",
	      \ "this one doesn't",
	      \ "this one does\<CR>",
	      \ "and the last one doesn't"]
  set ta tx
  enew!
  call append(0, l)
  $delete
  write Xfile1
  bwipe Xfile1
  edit Xfile1
  let t = getline(1, '$')
  call assert_equal(l, t)
  new | only
  call delete('Xfile1')
endfunc