Description: fix #291941: Changing spacer length with a mouse is not undoable
Author: Matt McClinch <mattmcclinch@gmail.com>
Origin: upstream, commit:1ba9e83aa1959e8aa8e895bec616174b8615a832
Applied-Upstream: master, commit:822c7e6be

--- a/libmscore/spacer.cpp
+++ b/libmscore/spacer.cpp
@@ -128,6 +128,16 @@ void Spacer::startEdit(EditData& ed)
       }
 
 //---------------------------------------------------------
+//   startEditDrag
+//---------------------------------------------------------
+
+void Spacer::startEditDrag(EditData& ed)
+      {
+      ElementEditData* eed = ed.getData(this);
+      eed->pushProperty(Pid::SPACE);
+      }
+
+//---------------------------------------------------------
 //   editDrag
 //---------------------------------------------------------
 
--- a/libmscore/spacer.h
+++ b/libmscore/spacer.h
@@ -51,6 +51,7 @@ class Spacer final : public Element {
       virtual void draw(QPainter*) const;
       virtual bool isEditable() const { return true; }
       virtual void startEdit(EditData&) override;
+      virtual void startEditDrag(EditData&) override;
       virtual void editDrag(EditData&) override;
       virtual void updateGrips(EditData&) const override;
       virtual void spatiumChanged(qreal, qreal);