Fix quadratic memory consumption for accidentals.

diff --git a/lily/accidental-engraver.cc b/lily/accidental-engraver.cc
index 817da93c9787459471bd186bbc15afe97883702a..d74c8fb110ae89affdb4a222b4b7751b18c33709 100644 (file)
--- a/lily/accidental-engraver.cc
+++ b/lily/accidental-engraver.cc
@@ -437,6 +437,7 @@ Accidental_engraver::stop_translation_timestep ()
 
   accidental_placement_ = 0;
   accidentals_.clear ();
+  note_columns_.clear ();
   left_objects_.clear ();
   right_objects_.clear ();
 }