patch 8.2.0890: no color in terminal window when 'termguicolor' is set Commit: https://github.com/vim/vim/commit/1e5f8f6d65b2ecff3d93d9fdbdd17c7a2ab9cc3d Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jun 2 23:18:24 2020 +0200 patch 8.2.0890: no color in terminal window when 'termguicolor' is set Problem: No color in terminal window when 'termguicolor' is set. Solution: Clear the underline color. (closes https://github.com/vim/vim/issues/6186)

/* if_ole.cpp */
void InitOLE(int* pbDoRestart);
void UninitOLE(void);
void RegisterMe(int silent);
void UnregisterMe(int bNotifyUser);