Doc-de: final update to notation manual

[lilypond.git] / lily / context-property.cc

diff --git a/lily/context-property.cc b/lily/context-property.cc
index 7ee4b904d9a7edaf34aa4f0247cd704208ddf097..11d03c5b0537be35619f173d382fb6cc59aa042b 100644 (file)
--- a/lily/context-property.cc
+++ b/lily/context-property.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2004--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 2004--2012 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
@@ -24,6 +24,7 @@
 #include "main.hh"
 #include "simple-closure.hh"
 #include "spanner.hh"
+#include "unpure-pure-container.hh"
 #include "warn.hh"
 
 /*
@@ -113,10 +114,16 @@ execute_override_property (Context *context,
   target_alist = scm_acons (symbol, new_value, target_alist);
 
   bool ok = true;
-  if (!ly_is_procedure (new_value)
-      && !is_simple_closure (new_value))
-    ok = type_check_assignment (symbol, new_value,
-                                ly_symbol2scm ("backend-type?"));
+  bool pc = is_unpure_pure_container (new_value);
+  SCM vals[] = {pc ? unpure_pure_container_unpure_part (new_value) : new_value,
+                pc ? unpure_pure_container_pure_part (new_value) : SCM_BOOL_F
+               };
+
+  for (int i = 0; i < 2; i++)
+    if (!ly_is_procedure (vals[i])
+        && !is_simple_closure (vals[i]))
+      ok = ok && type_check_assignment (symbol, vals[i],
+                                        ly_symbol2scm ("backend-type?"));
 
   /*
     tack onto alist.  We can use set_car, since