private:
bool isModern()
{
+#ifdef LYX_INSET_INDEX_DEBUG
std::cout << to_utf8(entry_) << std::endl;
+#endif // LYX_INSET_INDEX_DEBUG
// If a modern parameter is present, this is definitely a modern index inset. Similarly, if it contains the
// usual LaTeX symbols (!|@), then it is definitely a legacy index inset. Otherwise, if it has features of