add missing files

[ardour.git] / libs / pbd / pbd / stateful_diff_command.h

diff --git a/libs/pbd/pbd/stateful_diff_command.h b/libs/pbd/pbd/stateful_diff_command.h
index 2d5c234d762f7d58963ef888a473e2614afa1d22..2a213d7a17e7fcea73be991cf6d3316e2d921727 100644 (file)
--- a/libs/pbd/pbd/stateful_diff_command.h
+++ b/libs/pbd/pbd/stateful_diff_command.h
@@ -45,6 +45,8 @@ public:
         
        XMLNode& get_state ();
 
+       bool empty () const;
+
 private:
        boost::weak_ptr<Stateful> _object; ///< the object in question
         PBD::PropertyList* _changes; ///< property changes to execute this command