Consolidation of Undo items not limited to three

src/UndoManager.h

@@ -30,8 +30,9 @@
 
   UndoManager can also automatically consolidate actions into
   a single state change.  If the "consolidate" argument to
-  PushState is true, then up to 3 identical events in a row
-  will result in one PushState and 2 ModifyStates.
+  PushState is true, then new changes may accumulate into the most
+  recent Undo state, if descriptions match and if no Undo or Redo or rollback
+  operation intervened since that state was pushed.
 
   Undo() temporarily moves down one state and returns the track
   hierarchy.  If another PushState is called, the redo information
@@ -143,7 +144,7 @@ class AUDACITY_DLL_API UndoManager {
    UndoStack stack;
 
    wxString lastAction;
-   int consolidationCount;
+   bool mayConsolidate { false };
 
    SpaceArray space;
    unsigned long long mClipboardSpaceUsage {};