patch 9.0.0636: underline color may not work in some terminals Commit: https://github.com/vim/vim/commit/b393275ae91eb9a8df7a9a611bd75590db9b22db Author: Bram Moolenaar <Bram@vim.org> Date: Sat Oct 1 21:22:17 2022 +0100 patch 9.0.0636: underline color may not work in some terminals Problem: Underline color does not work in terminals that don't send a termresponse. Solution: Do output t_8u if it was set explicitly. (closes #11253)