patch 8.1.2303: cursor in wrong position after horizontal scroll Commit: https://github.com/vim/vim/commit/08f23636aef595f4cc061dfee8248dca97df16b3 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Nov 16 14:19:33 2019 +0100 patch 8.1.2303: cursor in wrong position after horizontal scroll Problem: Cursor in wrong position after horizontal scroll. Solution: Set w_valid_leftcol. (closes https://github.com/vim/vim/issues/5214, closes https://github.com/vim/vim/issues/5224)

" 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