X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fcompletion-note-heads-engraver.cc;h=ef3a5012a26cbc5a77d192904ffb216d5082c4ab;hb=b787af94e0ec9e9bcfaed40cd73730c0e1e3ffd9;hp=c88e4cccc1e8f6f391937e9a87cca340a1ab6a06;hpb=0694f44d61203d9e8d26cd9bc83b46f2addb2c7f;p=lilypond.git

diff --git a/lily/completion-note-heads-engraver.cc b/lily/completion-note-heads-engraver.cc
index c88e4cccc1..ef3a5012a2 100644
--- a/lily/completion-note-heads-engraver.cc
+++ b/lily/completion-note-heads-engraver.cc
@@ -80,7 +80,7 @@ protected:
   void start_translation_timestep ();
   void process_music ();
   void stop_translation_timestep ();
-  DECLARE_TRANSLATOR_LISTENER (note);
+  void listen_note (Stream_event *);
 };
 
 void
@@ -89,7 +89,6 @@ Completion_heads_engraver::initialize ()
   is_first_ = false;
 }
 
-IMPLEMENT_TRANSLATOR_LISTENER (Completion_heads_engraver, note);
 void
 Completion_heads_engraver::listen_note (Stream_event *ev)
 {
@@ -164,7 +163,7 @@ Completion_heads_engraver::make_note_head (Stream_event *ev)
   Item *note = make_item ("NoteHead", ev->self_scm ());
   Pitch *pit = unsmob<Pitch> (ev->get_property ("pitch"));
 
-  int pos = pit->steps ();
+  int pos = pit ? pit->steps () : 0;
   SCM c0 = get_property ("middleCPosition");
   if (scm_is_number (c0))
     pos += scm_to_int (c0);
@@ -307,6 +306,12 @@ Completion_heads_engraver::Completion_heads_engraver ()
   tie_column_ = 0;
 }
 
+void
+Completion_heads_engraver::boot ()
+{
+  ADD_LISTENER (Completion_heads_engraver, note);
+}
+
 ADD_TRANSLATOR (Completion_heads_engraver,
                 /* doc */
                 "This engraver replaces @code{Note_heads_engraver}.  It plays"