patch 8.0.0672: third item of synconcealed() changes too often commit https://github.com/vim/vim/commit/cc0750dc6e878394ab0fd922b7ea4280918ae406 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 24 22:29:24 2017 +0200 patch 8.0.0672: third item of synconcealed() changes too often Problem: Third item of synconcealed() changes too often. (Dominique Pelle) Solution: Reset the sequence number at the start of each line.

" 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