patch 8.1.1733: the man ftplugin leaves an empty buffer behind commit https://github.com/vim/vim/commit/e5e6950193ddf365c6c507ddefcd7f9db939e5ac Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jul 22 22:09:21 2019 +0200 patch 8.1.1733: the man ftplugin leaves an empty buffer behind Problem: The man ftplugin leaves an empty buffer behind. Solution: Don't make new window and edit, use split. (Jason Franklin)

" 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