patch 8.1.1332: cannot flush listeners without redrawing, mix of changes commit https://github.com/vim/vim/commit/fe1ade0a78a70a4c7ddaebb6964497f037f4997a Author: Bram Moolenaar <Bram@vim.org> Date: Tue May 14 21:20:36 2019 +0200 patch 8.1.1332: cannot flush listeners without redrawing, mix of changes Problem: Cannot flush change listeners without also redrawing. The line numbers in the list of changes may become invalid. Solution: Add listener_flush(). Invoke listeners before adding a change that makes line numbers invalid.

" Test feedkeys() function.

func Test_feedkeys_x_with_empty_string()
  new
  call feedkeys("ifoo\<Esc>")
  call assert_equal('', getline('.'))
  call feedkeys('', 'x')
  call assert_equal('foo', getline('.'))

  " check it goes back to normal mode immediately.
  call feedkeys('i', 'x')
  call assert_equal('foo', getline('.'))
  quit!
endfunc