bsde_parse_rule
error = bsde_parse_rule(argc, argv, rule, buflen, errstr);
int bsde_parse_rule(int argc, char *argv[],
error = bsde_parse_rule(argc - 1, argv + 1, &rule, BUFSIZ, errstr);
error = bsde_parse_rule(argc, argv, &rule, BUFSIZ, errstr);