Keep a staff alive with multiple layers

[lilypond.git] / lily / rest-collision-engraver.cc

diff --git a/lily/rest-collision-engraver.cc b/lily/rest-collision-engraver.cc
index 6406d1318fe4af3751594ed23d104c78b69901b6..56a6783fbfa34d338eac0366b6ecf5e9a90d864d 100644 (file)
--- a/lily/rest-collision-engraver.cc
+++ b/lily/rest-collision-engraver.cc
@@ -34,8 +34,6 @@
 
 #include "translator.icc"
 
-using std::set;
-
 class Rest_collision_engraver : public Engraver
 {
 protected:
@@ -96,6 +94,12 @@ Rest_collision_engraver::stop_translation_timestep ()
   rest_collision_ = 0;
 }
 
+void
+Rest_collision_engraver::boot ()
+{
+
+}
+
 ADD_TRANSLATOR (Rest_collision_engraver,
                 /* doc */
                 "Handle collisions of rests.",