Fix some bugs in the dynamic engraver and PostScript backend

[lilypond.git] / lily / smobs.cc

diff --git a/lily/smobs.cc b/lily/smobs.cc
index e2ec5d5638124b947cd9cf0c936ebe1e86dff775..a6fdc76b9e754ee306802d4d4c213f91960e0e31 100644 (file)
--- a/lily/smobs.cc
+++ b/lily/smobs.cc
@@ -3,11 +3,14 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "smobs.hh"
 
+/*
+  The CDR contains the actual protected list.
+ */
 static SCM smob_protection_list;
 
 void
@@ -18,14 +21,22 @@ init_smob_protection ()
 }
 ADD_SCM_INIT_FUNC (init_smob_protection, init_smob_protection);
 
+LY_DEFINE(ly_smob_protects, "ly:smob-protects",
+         0,0,0, (),
+         "Return lily's internal smob protection list")
+{
+  return scm_cdr (smob_protection_list);
+}
+
+         
+         
+
 void
 protect_smob (SCM smob, SCM *prot_cons)
 {
   SCM s = scm_cdr (smob_protection_list);
   while (scm_is_pair (s) && scm_car (s) == SCM_UNDEFINED)
-    {
-      s = scm_cdr (s);
-    }
+    s = scm_cdr (s);
 
   SCM prot = scm_cons (smob, s);
   scm_set_cdr_x (smob_protection_list,
@@ -39,9 +50,7 @@ unprotect_smob (SCM *prot_cons)
   SCM next = scm_cdr (*prot_cons);
 
   if (next == SCM_EOL)
-    {
-      scm_set_car_x (*prot_cons, SCM_UNDEFINED);
-    }
+    scm_set_car_x (*prot_cons, SCM_UNDEFINED);
   else
     {
       scm_set_car_x (*prot_cons, SCM_UNDEFINED);