patch 8.0.0548: saving the redo buffer only works one time commit https://github.com/vim/vim/commit/d4863aa99e0527e9505c79cbeafc68a6832200bf Author: Bram Moolenaar <Bram@vim.org> Date: Fri Apr 7 19:50:12 2017 +0200 patch 8.0.0548: saving the redo buffer only works one time Problem: Saving the redo buffer only works one time, resulting in the "." command not working well for a function call inside another function call. (Ingo Karkat) Solution: Save the redo buffer at every user function call. (closes #1619)

" Test if fnameescape is correct for special chars like !
function! 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! " . fnameescape(fname)
    let status = v:true
  endtry
  call assert_true(status, "ExclamationMark")
  call delete(fname)
endfunction