Now, modify the keyframe length column, shifts the rest
of keyframes form the modified keyframe to the end of time.
// Time location(keyframe.get_time());
Time location(get_canvas()->keyframe_list().find(keyframe)->get_time());
- Time delta(delta);
+// This line sets delta to 0s regardless to any previous value of delta.
+// I think it was here for symmetry to the undo() operation.
+// It was causing that the Set delta operation was faulty. Now works!
+// Time delta(delta);
get_canvas()->keyframe_list().insert_time(location,delta);