static Real get_line_thickness (Grob *);
static Real get_ledger_line_thickness (Grob *);
- static std::vector<Real> line_positions (Grob *);
- static std::vector<Real> ledger_positions (Grob *me, int pos);
+ static vector<Real> line_positions (Grob *);
+ static vector<Real> ledger_positions (Grob *me, int pos, Item const *head = 0);
static int line_count (Grob *);
static bool on_line (Grob *me, int pos, bool allow_ledger = true);
static Interval line_span (Grob *);