patch 8.2.3605: cannot clear and unlinke a highlight group with hlset() Commit: https://github.com/vim/vim/commit/2a16dc6613368c54d526850bcbcd03c3fec1be67 Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Tue Nov 16 17:19:30 2021 +0000 patch 8.2.3605: cannot clear and unlinke a highlight group with hlset() Problem: Cannot clear and unlinke a highlight group with hlset() in a single call. Solution: Add the "force" option. (Yegappan Lakshmanan, closes #9117)