Midi: Use span dynamics render results for note velocities. Fixes #1586.

[lilypond.git] / lily / midi-chunk.cc

diff --git a/lily/midi-chunk.cc b/lily/midi-chunk.cc
index 9c2a4bdf100caa46ed90e19b5a4f8dc8b007131a..625781dc5a44ad55902fcc4ff07646ede6d8be1c 100644 (file)
--- a/lily/midi-chunk.cc
+++ b/lily/midi-chunk.cc
@@ -110,7 +110,8 @@ Midi_event::to_string () const
 {
   string delta_string = int2midi_varint_string (delta_ticks_);
   string midi_string = midi_->to_string ();
-  assert (midi_string.length ());
+  if (midi_string.empty ())
+    return "";
   return delta_string + midi_string;
 }
 /****************************************************************