patch 8.1.2225: the "last used" info of a buffer is under used Commit: https://github.com/vim/vim/commit/52410575be50d5c40bbe6380159df48cfc382ceb Author: Bram Moolenaar <Bram@vim.org> Date: Sun Oct 27 05:12:45 2019 +0100 patch 8.1.2225: the "last used" info of a buffer is under used Problem: The "last used" info of a buffer is under used. Solution: Add "lastused" to getbufinfo(). List buffers sorted by last-used field. (Andi Massimino, closes #4722)

" 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