patch 9.0.0644: 'smoothscroll' is not copied to a new window on :split Commit: https://github.com/vim/vim/commit/b1fd26d208aadc96d3e8b9215f761150f40a9f91 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Oct 3 11:23:02 2022 +0100 patch 9.0.0644: 'smoothscroll' is not copied to a new window on :split Problem: 'smoothscroll' is not copied to a new window on :split. Solution: Copy the option value. Add a test.