static Interval no_visible_stem_positions (Grob *me, Interval default_value);
DECLARE_SCHEME_CALLBACK (rest_collision_callback, (SCM element, SCM prev_off));
+ DECLARE_SCHEME_CALLBACK (pure_rest_collision_callback, (SCM element, SCM prev_off, SCM, SCM));
DECLARE_SCHEME_CALLBACK (print, (SCM));
DECLARE_SCHEME_CALLBACK (calc_beaming, (SCM));
DECLARE_SCHEME_CALLBACK (calc_stem_shorten, (SCM));