patch 9.0.0245: mechanism to prevent recursive screen updating is incomplete Commit: https://github.com/vim/vim/commit/471c0fa3eed4f6207d1cb7636970547bfd2eee26 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Aug 22 15:19:16 2022 +0100 patch 9.0.0245: mechanism to prevent recursive screen updating is incomplete Problem: Mechanism to prevent recursive screen updating is incomplete. Solution: Add "redraw_not_allowed" and set it in build_stl_str_hl(). (issue #10952)

" 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

" vim: shiftwidth=2 sts=2 expandtab