Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

[lilypond.git] / lily / include / change-iterator.hh

diff --git a/lily/include/change-iterator.hh b/lily/include/change-iterator.hh
index 99d2b7ec91443bc3f3201e42fe8b622d6877b0d8..1ba16c09071916727300214f903ffbb6d83ea6e5 100644 (file)
--- a/lily/include/change-iterator.hh
+++ b/lily/include/change-iterator.hh
@@ -30,6 +30,10 @@ public:
   DECLARE_SCHEME_CALLBACK (constructor, ());
   DECLARE_CLASSNAME (Change_iterator);
 
+  // returns an error message (empty on success)
+  static string change_to (Music_iterator &it,
+                           SCM to_type, const string &to_id);
+
 private:
   void error (const string&);
 };