patch 8.1.0750: when the last sign is deleted the signcolumn may remain commit https://github.com/vim/vim/commit/8144acbec33b751788a7912e2d880c083c6cfe93 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jan 14 23:08:18 2019 +0100 patch 8.1.0750: when the last sign is deleted the signcolumn may remain Problem: When the last sign is deleted the signcolumn may not be removed even though 'signcolumn' is "auto". Solution: When deleting the last sign redraw the buffer. (Dominique Pelle, closes #3803, closes #3804)

" 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