Function optionsToString

src/gui2/utils.cc:43–55

}

std::string optionsToString(const OptionsMap& options)
{
    std::stringstream ss;
    for (auto& it : options)
    {
        if (ss.rdbuf()->in_avail())
            ss << " ";
        ss << it.first;
        if (!it.second.empty())
            ss << "=" << it.second;
    }
    return ss.str();
}