patch 8.1.1746: ":dl" is seen as ":dlist" instead of ":delete" commit https://github.com/vim/vim/commit/94f82cbacf76767b5ac32f813e1d670501dbd0e6 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 24 22:30:27 2019 +0200 patch 8.1.1746: ":dl" is seen as ":dlist" instead of ":delete" Problem: ":dl" is seen as ":dlist" instead of ":delete". Solution: Do not use cmdidxs2[] if the length is 1. (closes https://github.com/vim/vim/issues/4721)

" 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