/* if ph is given, it is used, otherwise one is looked for when needed */
extern bool region_rescue(WRegion *reg, WPHolder *ph, int flags);
extern bool region_rescue_needed(WRegion *reg);
/* if ph is given, it is used, otherwise one is looked for when needed */
extern bool region_rescue(WRegion *reg, WPHolder *ph, int flags);
extern bool region_rescue_needed(WRegion *reg);