patch 9.0.1602: stray character visible if marker on top of double-wide char Commit: https://github.com/vim/vim/commit/ecb87dd7d3f7b9291092a7dd8fae1e59b9903252 Author: zeertzjq <zeertzjq@outlook.com> Date: Sat Jun 3 19:45:06 2023 +0100 patch 9.0.1602: stray character visible if marker on top of double-wide char Problem: Stray character is visible if 'smoothscroll' marker is displayed on top of a double-wide character. Solution: When overwriting a double-width character with the 'smoothscroll' marker clear the second half. (closes #12469)