if (field.empty())
        {
            crawl_state.add_startup_error("Autoinscirbe string is empty");
            return;
        }
        const size_t first = field.find_first_of(':');
        const size_t last  = field.find_last_of(':');
        if (first == std::string::npos || first != last)
        {
            crawl_state.add_startup_error(
                make_stringf("Autoinscribe string must have exactly "
                             "one colon: %s\n", field.c_str()));
            return;
        }
        if (first == 0)
        {
            crawl_state.add_startup_error(
                make_stringf("Autoinscribe pattern is empty: %s\n",
                             field.c_str()));
            return;
        }
        if (last == field.length() - 1)
        {
            crawl_state.add_startup_error(
                make_stringf("Autoinscribe result is empty: %s\n",
                             field.c_str()));
            return;
        }

        if (thesplit.size() != 2)
        {
            crawl_state.add_startup_error(
                make_stringf("Error parsing autoinscribe string: %s\n",
                             field.c_str()));
            return;
        }