X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Fglobal-context.hh;h=49436bcf87b04277b1bf8afa52d86d24c0bf4f44;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=31e2190bc21c22dbb08d458774c4982f8fecdb1d;hpb=f4abbfff5f0d985a457e15586dbcc3ae473b0dee;p=lilypond.git

diff --git a/lily/include/global-context.hh b/lily/include/global-context.hh
index 31e2190bc2..49436bcf87 100644
--- a/lily/include/global-context.hh
+++ b/lily/include/global-context.hh
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1997--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -48,7 +48,12 @@ public:
   virtual Moment now_mom () const;
   virtual Context *get_default_interpreter (const string &context_id = "");
 
-  static Global_context *unsmob (SCM x);
+  static Global_context *unsmob (SCM x) {
+    return dynamic_cast<Global_context *> (Context::unsmob (x));
+  }
+  static bool is_smob (SCM x) {
+    return Context::is_smob (x) && unsmob (x);
+  }
 
   Moment previous_moment () const;
 protected: