patch 8.1.0341: :argadd in empty buffer changes the buffer name commit https://github.com/vim/vim/commit/32bbd00949c585ea1c9da13197279a175097eddd Author: Bram Moolenaar <Bram@vim.org> Date: Fri Aug 31 23:06:22 2018 +0200 patch 8.1.0341: :argadd in empty buffer changes the buffer name Problem: :argadd in empty buffer changes the buffer name. (Pavol Juhas) Solution: Don't re-use the current buffer when not going to edit the file. (closes #3397) Do re-use the current buffer for :next.

" 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