From 73f27f5b32c8264de7fb215d84c97a5271a00364 Mon Sep 17 00:00:00 2001
From: Armin Ronacher <armin.ronacher@active-4.com>
Date: Fri, 6 Jun 2014 22:40:02 +0600
Subject: [PATCH] Make sure filtering returns a list for template listing.

---
 jinja2/environment.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jinja2/environment.py b/jinja2/environment.py
index d65059a0..7cdce6ff 100644
--- a/jinja2/environment.py
+++ b/jinja2/environment.py
@@ -717,7 +717,7 @@ class Environment(object):
             filter_func = lambda x: '.' in x and \
                                     x.rsplit('.', 1)[1] in extensions
         if filter_func is not None:
-            x = ifilter(filter_func, x)
+            x = list(ifilter(filter_func, x))
         return x
 
     def handle_exception(self, exc_info=None, rendered=False, source_hint=None):
-- 
2.47.2