From 23950954cac1ea7f701c3933fe916873ec4c0892 2013-07-13 00:41:18
From: MinRK <benjaminrk@gmail.com>
Date: 2013-07-13 00:41:18
Subject: [PATCH] don't double-decorate in `flag_calls`

---

diff --git a/IPython/utils/decorators.py b/IPython/utils/decorators.py
index 208bf83..c264855 100644
--- a/IPython/utils/decorators.py
+++ b/IPython/utils/decorators.py
@@ -33,6 +33,10 @@ def flag_calls(func):
 
     Testing for truth in wrapper.called allows you to determine if a call to
     func() was attempted and succeeded."""
+    
+    # don't wrap twice
+    if hasattr(func, 'called'):
+        return func
 
     def wrapper(*args,**kw):
         wrapper.called = False