int compute_char_face (struct frame *, int, Lisp_Object);
void free_all_realized_faces (Lisp_Object);
extern Lisp_Object Qforeground_color, Qbackground_color;
-extern Lisp_Object Qframe_set_background_mode;
extern char unspecified_fg[], unspecified_bg[];
/* Defined in xfns.c */