patch 8.2.2638: cannot write a message to the terminal from the GUI Commit: https://github.com/vim/vim/commit/4c86830fc578bcb47a51cf0983da5388cdbfe6cc Author: Bram Moolenaar <Bram@vim.org> Date: Mon Mar 22 16:19:45 2021 +0100 patch 8.2.2638: cannot write a message to the terminal from the GUI Problem: Cannot write a message to the terminal from the GUI. Solution: Add :echoconsole and use it in the test runner. (issue https://github.com/vim/vim/issues/7975)

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