--- a/hgext/shelve.py	Fri Mar 28 12:51:05 2014 -0500
+++ b/hgext/shelve.py	Fri Apr 04 14:01:25 2014 -0500
@@ -149,7 +149,7 @@
     label = repo._bookmarkcurrent or parent.branch() or 'default'
 
     # slashes aren't allowed in filenames, therefore we rename it
-    origlabel, label = label, label.replace('/', '_')
+    label = label.replace('/', '_')
 
     def gennames():
         yield label