patch 8.2.0435: channel contents might be freed twice Commit: https://github.com/vim/vim/commit/dbbb0ef729e392e313ccc63c247bff1b828a214d Author: Bram Moolenaar <Bram@vim.org> Date: Mon Mar 23 22:01:17 2020 +0100 patch 8.2.0435: channel contents might be freed twice Problem: Channel contents might be freed twice. Solution: Call either channel_free_channel() or channel_free(), not both. (Nobuhiro Takasaki, closes #5835)

" 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