From 5a4074a9f8b95d58a25aa630ab0acaeb00cf37cd Mon Sep 17 00:00:00 2001
From: Christian Weiske <cweiske@cweiske.de>
Date: Thu, 9 Jul 2015 13:39:07 +0200
Subject: [PATCH] Check for HTML in the first 100 bytes.

Some HTML pages have an XML header (XHTML), which alone is nearly 50 bytes.
Thus we need to check for the HTML or doctype tags in the first 100 bytes.
---
 include/functions2.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/functions2.php b/include/functions2.php
index e3b6e535..133352f7 100644
--- a/include/functions2.php
+++ b/include/functions2.php
@@ -1792,7 +1792,7 @@
 	}
 
 	function is_html($content) {
-		return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
+		return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 100)) !== 0;
 	}
 
 	function url_is_html($url, $login = false, $pass = false) {
-- 
2.39.5