[lib/dialogwizard] typo

darcs-hash:20090929134214-bd074-b24076612b84473fe9acaa70d26fc649399e0015.gz

lib/dialogwizard/wizard.py

@@ -33,7 +33,7 @@ class Step:
 class Scenario:
     u"""This class allows us to define scenarios."""
 
-    def __init__(self)
+    def __init__(self):
         u"""empty scenario, with an error handler (that takes an exception as
         argument)"""
         self.steps = None
@@ -162,7 +162,18 @@ class Running:
                     pass
 
                 except Exception, e:
-                    self.handle(e)
+                    try:
+                        self.handle(e)
+
+                    except PreviousStep:
+                        if self.stack:
+                            self.env, self.defaults, self.steps, self.stack = self.stack
+                        else:
+                            raise EndScenario("No previous step", self.env)
+
+                    except TryAgain:
+                        # We can update defaults
+                        pass
 
         else:
             # Should not be called