parse_interval
seconds += parse_interval(*argv++);
interval = parse_interval(argv[i], now);
interval = parse_interval(argv[i], now);
interval = parse_interval(argv[i], now);
interval = parse_interval(argv[i], now);
interval = parse_interval(argv[i], now);
interval = parse_interval(argv[i], now);
if (parse_interval(optarg, &j, &k) < 0) {