-ADD_ACKNOWLEDGER (Spacing_engraver, staff_spacing);
-ADD_ACKNOWLEDGER (Spacing_engraver, note_spacing);
-ADD_ACKNOWLEDGER (Spacing_engraver, rhythmic_head);
-ADD_ACKNOWLEDGER (Spacing_engraver, rhythmic_grob);
+
+void
+Spacing_engraver::boot ()
+{
+ ADD_LISTENER (Spacing_engraver, spacing_section);
+ ADD_ACKNOWLEDGER (Spacing_engraver, staff_spacing);
+ ADD_ACKNOWLEDGER (Spacing_engraver, note_spacing);
+ ADD_ACKNOWLEDGER (Spacing_engraver, rhythmic_head);
+ ADD_ACKNOWLEDGER (Spacing_engraver, rhythmic_grob);
+}