patch 8.2.0554: the GUI doesn't set t_Co Commit: https://github.com/vim/vim/commit/acc770a10f65107131473ea2ab4ae5d429dfe172 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 12 15:11:06 2020 +0200 patch 8.2.0554: the GUI doesn't set t_Co Problem: The GUI doesn't set t_Co. Solution: In the GUI set t_Co to 256 * 256 * 256. (closes https://github.com/vim/vim/issues/5903)

/* viminfo.c */
int get_viminfo_parameter(int type);
int buf_compare(const void *s1, const void *s2);
void check_marks_read(void);
int read_viminfo(char_u *file, int flags);
void write_viminfo(char_u *file, int forceit);
void ex_viminfo(exarg_T *eap);
/* vim: set ft=c : */