}
static void
cmd_change_usage() {
	printf("ani change [-h] [-v] <hash>\n");

change(const char *hash)

change(const char *hash, int verbose)

	/* dump_buf("contents", contents, off.contents_len); */

	if (verbose)
		dump_buf("contents", contents, off.contents_len);

int cmd_change(int argc, const char **argv)

int cmd_change(int argc, char **argv)

	int verbose;
	int c;

	if (argc < 2) {
		fprintf(stderr, "error: invalid number of arguments. See --help\n");

	verbose = 0;
	while ((c = getopt(argc, argv, "hv")) != -1) {
		switch (c) {
		case 'v':
			verbose = 1;
			break;
		case 'h':
			cmd_change_usage();
			return 0;
		case '?':
			fprintf(stderr, "unrecognized option: '-%c'\n", optopt);
			return -1;
		}
	}
	if (optind >= argc) {
		fprintf(stderr, "error: invalid number of arguments. See -h\n");

	hash = argv[1];

	hash = argv[optind];

	return change(hash);

	return change(hash, verbose);