protected:
vector<Grob_info> announce_infos_;
Drul_array<SCM> acknowledge_hash_table_drul_;
- DECLARE_LISTENER (override);
- DECLARE_LISTENER (revert);
+ void override (SCM);
+ void revert (SCM);
public:
DECLARE_CLASSNAME (Engraver_group);
Engraver_group ();