X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fscheme-engraver.cc;h=8d2054161bf716b577c4f4a4c61442cbd584cd13;hb=d2762a4f1add2bb04d6fc34d3c7ae03eeb7d500f;hp=e59903086ac750fa225e4af7c88ed412a0de5a1d;hpb=4a401ca1c60f428daa242dbdd102fdb3f327ebfb;p=lilypond.git

diff --git a/lily/scheme-engraver.cc b/lily/scheme-engraver.cc
index e59903086a..8d2054161b 100644
--- a/lily/scheme-engraver.cc
+++ b/lily/scheme-engraver.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  Copyright (c) 2009--2011 Han-Wen Nienhuys <hanwen@lilypond.org>
+  Copyright (c) 2009--2015 Han-Wen Nienhuys <hanwen@lilypond.org>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -158,7 +158,7 @@ void
 Scheme_engraver::acknowledge_grob_by_hash (Grob_info info,
                                            SCM iface_function_hash)
 {
-  SCM meta = info.grob ()->internal_get_property (ly_symbol2scm ("meta"));
+  SCM meta = info.grob ()->get_property ("meta");
   SCM ifaces = scm_cdr (scm_assoc (ly_symbol2scm ("interfaces"), meta));
   for (SCM s = ifaces; scm_is_pair (s); s = scm_cdr (s))
     {
@@ -186,9 +186,19 @@ void mark_listen_closure (void *target)
   scm_gc_mark ((SCM)target);
 }
 
-Listener_function_table listen_closure =
+static
+bool equal_listen_closure (void *a, void *b)
+{
+  SCM target_a = (SCM) a;
+  SCM target_b = (SCM) b;
+
+  return ly_is_equal (target_a, target_b);
+}
+
+Listener_function_table listen_closure
+=
 {
-  call_listen_closure, mark_listen_closure
+  call_listen_closure, mark_listen_closure, equal_listen_closure
 };
 
 /* static */