patch 8.2.1081: Lua: cannot use table.insert() and table.remove() Commit: https://github.com/vim/vim/commit/a1f9f8666ed3a462eb8a518e78418c57dc41bbd4 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 28 22:41:26 2020 +0200 patch 8.2.1081: Lua: cannot use table.insert() and table.remove() Problem: Lua: cannot use table.insert() and table.remove(). Solution: Add the list functions. (Prabir Shrestha, closes https://github.com/vim/vim/issues/6353)

" 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