patch 8.1.1751: when redrawing popups plines_win() may be called often commit https://github.com/vim/vim/commit/9d5ffceb3fea247a88d4d3936e97b7f488aab6ff Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jul 26 21:01:29 2019 +0200 patch 8.1.1751: when redrawing popups plines_win() may be called often Problem: When redrawing popups plines_win() may be called often. Solution: Pass a cache to mouse_comp_pos().

" Tests for various Ex commands.

func Test_ex_delete()
  new
  call setline(1, ['a', 'b', 'c'])
  2
  " :dl is :delete with the "l" flag, not :dlist
  .dl
  call assert_equal(['a', 'c'], getline(1, 2))
endfunc