extern bool region_rescue_needed(WRegion *reg);
extern bool region_rescue_clientwins(WRegion *reg, WRescueInfo *info);
extern bool region_rescue_child_clientwins(WRegion *reg, WRescueInfo *info);
extern bool region_rescue_some_clientwins(WRegion *reg, WRescueInfo *info,
WRegionIterator *iter, void *st);
extern bool region_rescue_needed(WRegion *reg);
extern bool region_rescue_clientwins(WRegion *reg, WRescueInfo *info);
extern bool region_rescue_child_clientwins(WRegion *reg, WRescueInfo *info);
extern bool region_rescue_some_clientwins(WRegion *reg, WRescueInfo *info,
WRegionIterator *iter, void *st);