patch 8.0.0374: invalid memory access when using :sc in Ex mode commit https://github.com/vim/vim/commit/ba748c8a847561c043a63827bcb1d98bdebe16e6 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 26 14:00:07 2017 +0100 patch 8.0.0374: invalid memory access when using :sc in Ex mode Problem: Invalid memory access when using :sc in Ex mode. (Dominique Pelle) Solution: Avoid the column being negative. Also fix a hang in Ex mode.

" 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