From 637130b2dabf4f30a94c99b9ca1b4e76711a2977 Mon Sep 17 00:00:00 2001
From: Thomas Woolford <woolford.thomas@gmail.com>
Date: Wed, 12 Sep 2012 14:15:15 +0930
Subject: [PATCH] make sure that blank strings do not kill in_list

---
 helpdesk/templatetags/in_list.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/helpdesk/templatetags/in_list.py b/helpdesk/templatetags/in_list.py
index 47f0916f..16c3d678 100644
--- a/helpdesk/templatetags/in_list.py
+++ b/helpdesk/templatetags/in_list.py
@@ -18,7 +18,7 @@ Assuming 'food' = 'pizza' and 'best_foods' = ['pizza', 'pie', 'cake]:
 from django import template
 
 def in_list(value, arg):
-    return value in arg
+    return value in ( arg or [] )
 
 register = template.Library()
 register.filter(in_list)