From 766bf4df7f71f47ea99f2a66ae4dd5db5f83f75b Mon Sep 17 00:00:00 2001
From: q-- <io7io@ya.ru>
Date: Mon, 21 Sep 2015 13:33:50 +0200
Subject: [PATCH] Check if patterns are valid regular expressions

---
 bin/wappalyzer-validate-regex | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/bin/wappalyzer-validate-regex b/bin/wappalyzer-validate-regex
index 2f72564e1..e55e70648 100755
--- a/bin/wappalyzer-validate-regex
+++ b/bin/wappalyzer-validate-regex
@@ -27,6 +27,11 @@ for ( app in json.apps ) {
 					attrs = pattern.split('\\;'),
 					regex = '/' + attrs.shift().replace('/', '\/') + '/';
 
+				//Check if the pattern is a valid RegExp
+				//Note: unlike when used in Wappalyzer, the modifier i isn't added here
+				new RegExp(regex);
+
+
 				if ( /^\/(?:\^\$|\.\+|\.\*)\/$/.test(regex) )  {
 					throw new Error('Pattern should be replaced with empty string.\n' + app + ': ' + type + ': ' + pattern);
 				}