if (s.find(context) == std::string::npos)

    const std::string contextm = "[string \"" + context + "\"]:";
    std::string::size_type dlwhere = s.find(contextm);
    if (dlwhere == std::string::npos)

    if (!dlwhere)
    {
        s = rewrite_chunk_prefix(s);
        return (true);
    }