void constrain_window(struct ws_win *, struct swm_region *, int);
void update_window(struct ws_win *);
void spawn_select(struct swm_region *, union arg *, char *, int *);
void constrain_window(struct ws_win *, struct swm_region *, int);
void update_window(struct ws_win *);
void spawn_select(struct swm_region *, union arg *, char *, int *);