@@ -63,10 +63,22 @@
 
 	for (i = 0; i < count; i++)
 		if (![set containsObject: cArray[i]])
 			[self removeObject: cArray[i]];
 
+	[pool release];
+}
+
+- (void)unionSet: (OFSet*)set
+{
+	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
+	OFEnumerator *enumerator = [set objectEnumerator];
+	id object;
+
+	while ((object = [enumerator nextObject]) != nil)
+		[self addObject: object];
+
 	[pool release];
 }
 
 - (int)countByEnumeratingWithState: (of_fast_enumeration_state_t*)state
 			   objects: (id*)objects