From af79a7b837151af793b5bd2788de3635ab96b1e3 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 04 Oct 2013 03:40:37 -0400
Subject: [PATCH] Fixed issues where HTML comments inside style tag would hang Internet Explorer

---
 program/lib/Roundcube/rcube_washtml.php |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/program/lib/Roundcube/rcube_washtml.php b/program/lib/Roundcube/rcube_washtml.php
index a42b61a..e746754 100644
--- a/program/lib/Roundcube/rcube_washtml.php
+++ b/program/lib/Roundcube/rcube_washtml.php
@@ -455,7 +455,7 @@
         }
 
         // fix (unknown/malformed) HTML tags before "wash"
-        $html = preg_replace_callback('/(<[\/]*)([^\s>]+)/', array($this, 'html_tag_callback'), $html);
+        $html = preg_replace_callback('/(<(?!\!)[\/]*)([^\s>]+)/', array($this, 'html_tag_callback'), $html);
 
         // Remove invalid HTML comments (#1487759)
         // Don't remove valid conditional comments

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