ObjFW  Diff

		[pool2 releaseObjects];
	}
	[ret replaceOccurrencesOfString: @"\n"
			     withString: @"\n\t"];
	[ret appendString: @"\n)}"];

	[ret makeImmutable];

	[pool release];

	/*
	 * Class swizzle the string to be immutable. We declared the return type
	 * to be OFString*, so it can't be modified anyway. But not swizzling it
	 * would create a real copy each time -[copy] is called.
	 */
	ret->isa = [OFString class];
	return ret;
}

- copy
{
	return [[OFSet alloc] initWithSet: self];
}

	[dictionary enumerateKeysAndObjectsUsingBlock: ^ (id key, id object,
	    BOOL *stop) {
		if (block(key))
			[ret addObject: key];
	}];

	/*
	 * Class swizzle the set to be immutable. We declared the return type
	 * to be OFSet*, so it can't be modified anyway. But not swizzling it
	[ret makeImmutable];

	 * would create a real copy each time -[copy] is called.
	 */
	ret->isa = [OFSet class];
	return ret;
}
#endif
@end