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)

/* session.c */
void ex_loadview(exarg_T *eap);
int write_session_file(char_u *filename);
void ex_mkrc(exarg_T *eap);
var_flavour_T var_flavour(char_u *varname);
int put_eol(FILE *fd);
int put_line(FILE *fd, char *s);
/* vim: set ft=c : */