Bug2600: Should rename current undo state after compacting

src/ProjectFileManager.cpp

@@ -1272,5 +1272,9 @@ void ProjectFileManager::Compact()
             .Format(Internat::FormatSize((before - after).GetValue())),
             XO("Compact Project"));
       }
+
+      undoManager.RenameState( undoManager.GetCurrentState(),
+         XO("Compacted project file"),
+         XO("Compact") );
    }
 }

src/UndoManager.cpp

@@ -308,6 +308,17 @@ void UndoManager::ModifyState(const TrackList * l,
    mProject.QueueEvent( safenew wxCommandEvent{ EVT_UNDO_MODIFIED } );
 }
 
+void UndoManager::RenameState( int state,
+   const TranslatableString &longDescription,
+   const TranslatableString &shortDescription)
+{
+   if (state >= 0 && state < stack.size() ) {
+      auto &theState = *stack[state];
+      theState.description = longDescription;
+      theState.shortDescription = shortDescription;
+   }
+}
+
 void UndoManager::PushState(const TrackList * l,
                             const SelectedRegion &selectedRegion,
                             const std::shared_ptr<Tags> &tags,

src/UndoManager.h

@@ -151,6 +151,9 @@ class AUDACITY_DLL_API UndoManager final
                   UndoPush flags = UndoPush::NONE);
    void ModifyState(const TrackList * l,
                     const SelectedRegion &selectedRegion, const std::shared_ptr<Tags> &tags);
+   void RenameState( int state,
+      const TranslatableString &longDescription,
+      const TranslatableString &shortDescription);
    void AbandonRedo();
    void ClearStates();
    void RemoveStates(