patch 9.0.1456: shortmess test depends on order of test execution Commit: https://github.com/vim/vim/commit/657b31fa3bda2089fef18c30fc706abe5d57e865 Author: zeertzjq <zeertzjq@outlook.com> Date: Sat Apr 15 21:28:02 2023 +0100 patch 9.0.1456: shortmess test depends on order of test execution Problem: Shortmess test depends on order of test execution. Solution: Clear messages. (closes https://github.com/vim/vim/issues/12264)