patch 8.0.1172: when E734 is given option is still set commit https://github.com/vim/vim/commit/2a6a6c3014e728cd01c750b0f60484d4eaf22a8c Author: Bram Moolenaar <Bram@vim.org> Date: Mon Oct 2 19:29:48 2017 +0200 patch 8.0.1172: when E734 is given option is still set Problem: When E734 is given option is still set. Solution: Assign NULL to "s". (Christian Brabandt)

" Test for joining lines.

func Test_join_with_count()
  new
  call setline(1, ['one', 'two', 'three', 'four'])
  normal J
  call assert_equal('one two', getline(1))
  %del
  call setline(1, ['one', 'two', 'three', 'four'])
  normal 10J
  call assert_equal('one two three four', getline(1))
  quit!
endfunc