patch 8.1.0754: preferred column is lost when setting 'cursorcolumn' commit https://github.com/vim/vim/commit/177ab9e0262b1b3a6120bea655864ead487210e5 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jan 15 21:12:57 2019 +0100 patch 8.1.0754: preferred column is lost when setting 'cursorcolumn' Problem: Preferred column is lost when setting 'cursorcolumn'. Solution: Change option flag to P_RWINONLY. (Takayuki Kurosawa, closes #3806)

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