DECLARE_SCHEME_CALLBACK (alignment_callback, (SCM element));
static void add_accidental (Grob *, Grob *);
DECLARE_SCHEME_CALLBACK (alignment_callback, (SCM element));
static void add_accidental (Grob *, Grob *);
vector<Grob*> *real_acc);
DECLARE_SCHEME_CALLBACK(calc_positioning_done, (SCM));
vector<Grob*> *real_acc);
DECLARE_SCHEME_CALLBACK(calc_positioning_done, (SCM));