patch 9.0.1578: SpellCap highlight not always updated when needed Commit: https://github.com/vim/vim/commit/2ac6497f0ef186f0e3ba67d7f0a485bfb612bb08 Author: Luuk van Baal <luukvbaal@gmail.com> Date: Thu May 25 17:14:42 2023 +0100 patch 9.0.1578: SpellCap highlight not always updated when needed Problem: SpellCap highlight not always updated when needed. Solution: Handle updating line below closed fold and other situations where only part of the window is redrawn. (Luuk van Baal, closes #12428, closes #12420)

|a+1&#ffffff0|b|c|d|e| @69
> +0&&@74
|~+0#4040ff13&| @73
|~| @73
|~| @73
|~| @73
|~| @73
|~| @73
|a+3#0000000&|b|c|d|e| @69
| +0&&@74