patch 9.0.1362: ml_get error when going to another tab Commit: https://github.com/vim/vim/commit/99ad3a8bb95c6f860545a050472b6181e33bac1a Author: Bram Moolenaar <Bram@vim.org> Date: Mon Feb 27 17:18:01 2023 +0000 patch 9.0.1362: ml_get error when going to another tab Problem: ml_get error when going to another tab. (Daniel J. Perry) Solution: Do not call update_topline() if "curwin" is invalid. (closes #11907)

" 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