patch 9.1.0082: Redrawing can be improved when deleting lines with 'cursorline' Commit: https://github.com/vim/vim/commit/7ce34c9a947b17a8b5e81e7c2335a63552182d10 Author: zeertzjq <zeertzjq@outlook.com> Date: Thu Feb 8 11:34:55 2024 +0100 patch 9.1.0082: Redrawing can be improved when deleting lines with 'cursorline' Problem: Redrawing can be improved when deleting lines with 'cursorline'. Solution: Use smarter invalidation and adjustment. Remove unnecessary UPD_VALID as it is already set at the top of the loop. Make the test for #4862 fail without the fix. (zeertzjq) closes: #13986 Signed-off-by: zeertzjq <zeertzjq@outlook.com> Signed-off-by: Christian Brabandt <cb@256bit.org>