ObjFW  Diff

			size_t pos;
			of_options_parser_option_t *option;

			_lastOption = '-';
			_index++;

			if ((pos = [argument rangeOfString: @"="].location) !=
			    OF_NOT_FOUND)
				_argument = [[argument
				    substringFromIndex: pos + 1] copy];
			else
				pos = argument.length;

			_lastLongOption = [[argument substringWithRange:
			    OFMakeRange(2, pos - 2)] copy];