patch 9.0.1664: divide by zero when scrolling with 'smoothscroll' set Commit: https://github.com/vim/vim/commit/8154e642aa476e1a5d3de66c34e8289845b2b797 Author: fullwaywang <fullwaywang@tencent.com> Date: Sat Jun 24 21:58:09 2023 +0100 patch 9.0.1664: divide by zero when scrolling with 'smoothscroll' set Problem: Divide by zero when scrolling with 'smoothscroll' set. Solution: Avoid using a negative width. (closes https://github.com/vim/vim/issues/12540, closes https://github.com/vim/vim/issues/12528)