static Interval generic_bound_extent (Grob *me, Grob *common, Axis a);
static Interval pure_group_height (Grob *me, int start, int end);
DECLARE_SCHEME_CALLBACK (width, (SCM smob));
static Interval generic_bound_extent (Grob *me, Grob *common, Axis a);
static Interval pure_group_height (Grob *me, int start, int end);
DECLARE_SCHEME_CALLBACK (width, (SCM smob));