extern Lisp_Object Vwindow_list;
extern struct window *decode_live_window (Lisp_Object);
-extern int compare_window_configurations (Lisp_Object, Lisp_Object, int);
+extern bool compare_window_configurations (Lisp_Object, Lisp_Object, bool);
extern void mark_window_cursors_off (struct window *);
extern int window_internal_height (struct window *);
extern int window_body_cols (struct window *w);