From a23d4fbb71a7011b0886cb10c0273598d9474eed Mon Sep 17 00:00:00 2001
From: Christophe Coevoet <stof@notk.org>
Date: Thu, 3 May 2012 22:25:04 +0200
Subject: [PATCH] Fixed the handling of the timezone for DateTime objects

---
 lib/Twig/Extension/Core.php |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/lib/Twig/Extension/Core.php b/lib/Twig/Extension/Core.php
index 301c4bb..37415ae 100644
--- a/lib/Twig/Extension/Core.php
+++ b/lib/Twig/Extension/Core.php
@@ -388,6 +388,7 @@ function twig_date_format_filter(Twig_Environment $env, $date, $format = null, $
 
     if ($date instanceof DateInterval || $date instanceof DateTime) {
         if (null !== $timezone) {
+            $date = clone $date;
             $date->setTimezone($timezone instanceof DateTimeZone ? $timezone : new DateTimeZone($timezone));
         }
 
-- 
1.7.2.5