From 32b8671144eb9c298481e5d69f6985c0f88f1e3d Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@madoka.volgo-balt.ru>
Date: Thu, 1 Nov 2012 12:47:37 +0400
Subject: [PATCH] limit is_html() to only work on the begging of passed string

---
 include/functions.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/functions.php b/include/functions.php
index 0e98b4a54..9edd2dd2c 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -4707,7 +4707,7 @@
 	}
 
 	function is_html($content) {
-		return preg_match("/<html|DOCTYPE html/i", $content) !== 0;
+		return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
 	}
 
 	function url_is_html($url, $login = false, $pass = false) {