From 67d143ec4e41f163dab86f89134c150f219c388d Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Tue, 5 Mar 2019 12:42:59 -0500
Subject: [PATCH] Fix https://github.com/uBlockOrigin/uBlock-issues/issues/448

---
 src/js/static-ext-filtering.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/js/static-ext-filtering.js b/src/js/static-ext-filtering.js
index 724a69e0f..da48cdf84 100644
--- a/src/js/static-ext-filtering.js
+++ b/src/js/static-ext-filtering.js
@@ -753,7 +753,7 @@
         if ( anchorLen > 4 ) { return false; }
         if (
             anchorLen > 1 &&
-            /^@?(?:\$\??|%|\?)$/.test(raw.slice(lpos + 1, rpos)) === false
+            /^@?(?:\$\??|%|\?)?$/.test(raw.slice(lpos + 1, rpos)) === false
         ) {
             return false;
         }