std::string const polyglossia() const { return polyglossia_name_; }
/// polyglossia language options
std::string const polyglossiaOpts() const { return polyglossia_opts_; }
std::string const polyglossia() const { return polyglossia_name_; }
/// polyglossia language options
std::string const polyglossiaOpts() const { return polyglossia_opts_; }