patch 8.0.1497: getting the jump list requires parsing the output of :jumps commit https://github.com/vim/vim/commit/4f50588ba336e7f086a72c53f5688c2494fc34b3 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 10 21:06:32 2018 +0100 patch 8.0.1497: getting the jump list requires parsing the output of :jumps Problem: Getting the jump list requires parsing the output of :jumps. Solution: Add getjumplist(). (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/2609)

" Tests for :undo

func Test_ex_undo()
  new ex-undo
  setlocal ul=10
  exe "normal ione\n\<Esc>"
  setlocal ul=10
  exe "normal itwo\n\<Esc>"
  setlocal ul=10
  exe "normal ithree\n\<Esc>"
  call assert_equal(4, line('$'))
  undo
  call assert_equal(3, line('$'))
  undo 1
  call assert_equal(2, line('$'))
  undo 0
  call assert_equal(1, line('$'))
  quit!
endfunc