ObjFW  Diff

		if ((keyLength = [key UTF8StringLength]) < 1)
			return [self valueForUndefinedKey: key];

		if ((name = malloc(keyLength + 3)) == NULL)
			@throw [OFOutOfMemoryException
			    exceptionWithRequestedSize: keyLength + 3];

		@try {
		memcpy(name, "is", 2);
		memcpy(name + 2, [key UTF8String], keyLength);
		name[keyLength + 2] = '\0';
			memcpy(name, "is", 2);
			memcpy(name + 2, [key UTF8String], keyLength);
			name[keyLength + 2] = '\0';

		name[2] = toupper(name[2]);
			name[2] = toupper(name[2]);

		selector = sel_registerName(name);

		free(name);
			selector = sel_registerName(name);
		} @finally {
			free(name);
		}

		typeEncoding = [self typeEncodingForSelector: selector];

		if (typeEncoding == NULL ||
		    *typeEncoding == '@' || *typeEncoding == '#')
			return [self valueForUndefinedKey: key];
	}

		return;
	}

	if ((name = malloc(keyLength + 5)) == NULL)
		@throw [OFOutOfMemoryException
		    exceptionWithRequestedSize: keyLength + 5];

	@try {
	memcpy(name, "set", 3);
	memcpy(name + 3, [key UTF8String], keyLength);
	memcpy(name + keyLength + 3, ":", 2);
		memcpy(name, "set", 3);
		memcpy(name + 3, [key UTF8String], keyLength);
		memcpy(name + keyLength + 3, ":", 2);

	name[3] = toupper(name[3]);
		name[3] = toupper(name[3]);

	selector = sel_registerName(name);

	free(name);
		selector = sel_registerName(name);
	} @finally {
		free(name);
	}

	typeEncoding = [self typeEncodingForSelector: selector];

	if (typeEncoding == NULL || nextType(&typeEncoding) != 'v' ||
	    nextType(&typeEncoding) != '@' || nextType(&typeEncoding) != ':') {
		[self    setValue: value
		  forUndefinedKey: key];