patch 8.0.0439: ":%argdel" gives an error for an empty arglist commit https://github.com/vim/vim/commit/69a92fb5aecdf2f9d5f6947790b18991b22d0e4c Author: Bram Moolenaar <Bram@vim.org> Date: Thu Mar 9 15:58:30 2017 +0100 patch 8.0.0439: ":%argdel" gives an error for an empty arglist Problem: Using ":%argdel" while the argument list is already empty gives an error. (Pavol Juhas) Solution: Don't give an error. (closes #1546)

" 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