[Zope-Checkins] CVS: Releases/Zope/lib/python/OFS - History.py:1.10.16.1

[Evan Simpson]

Update of /cvs-repository/Releases/Zope/lib/python/OFS
In directory cvs.zope.org:/tmp/cvs-serv16869

Modified Files:
      Tag: Zope-2_5-branch
	History.py 
Log Message:
Don't raise TemporalParadox if nothing actually changed.

=== Releases/Zope/lib/python/OFS/History.py 1.10 => 1.10.16.1 ===
         return getattr(self.__base__, name)
 
-    def commit(*args, **kw):
-        raise TemporalParadox, "You can\'t change history!"
-
-    tpc_begin = tpc_finish = commit
+    def commit(self, object, transaction):
+        if object._p_changed:
+            raise TemporalParadox, "You can\'t change history!"
 
     def abort(*args, **kw): pass
+
+    tpc_begin = tpc_finish = abort
 
 def historicalRevision(self, serial):
     state=self._p_jar.oldstate(self, serial)