patch 8.0.1304: CTRL-G/CTRL-T don't work with incsearch and empty pattern commit https://github.com/vim/vim/commit/d0480097177369a6ed91d47aba189ae647afcd68 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Nov 16 22:20:39 2017 +0100 patch 8.0.1304: CTRL-G/CTRL-T don't work with incsearch and empty pattern Problem: CTRL-G/CTRL-T don't work with incsearch and empty pattern. Solution: Use the last search pattern. (Christian Brabandt, closes https://github.com/vim/vim/issues/2292)

" 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