--- a/migration.py	Thu Sep 23 23:28:58 2010 +0200
+++ b/migration.py	Wed Sep 29 16:16:32 2010 +0200
@@ -129,7 +129,8 @@
             return object.__getattribute__(self, name)
         except AttributeError:
             cmd = 'cmd_%s' % name
-            if hasattr(self, cmd):
+            # search self.__class__ to avoid infinite recursion
+            if hasattr(self.__class__, cmd):
                 meth = getattr(self, cmd)
                 return lambda *args, **kwargs: self.interact(args, kwargs,
                                                              meth=meth)