Function feature_alert_opts

src/options.c:7557–7585

 */

staticfn int
feature_alert_opts(char *op, const char *optn)
{
    char buf[BUFSZ];
    unsigned long fnv = get_feature_notice_ver(op); /* version.c */

    if (fnv == 0L)
        return 0;
    if (fnv > get_current_feature_ver()) {
        if (!go.opt_initial) {
            You_cant("disable new feature alerts for future versions.");
        } else {
            config_error_add(
                        "%s=%s Invalid reference to a future version ignored",
                             optn, op);
        }
        return 0;
    }

    flags.suppress_alert = fnv;
    if (!go.opt_initial) {
        Sprintf(buf, "%lu.%lu.%lu", FEATURE_NOTICE_VER_MAJ,
                FEATURE_NOTICE_VER_MIN, FEATURE_NOTICE_VER_PATCH);
        pline(
          "Feature change alerts disabled for NetHack %s features and prior.",
              buf);
    }
    return 1;
}

/*
 * This is used by parse_config_line() in files.c