From f806438de6f0106d15bd559d5d30e1cd5a7da324 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Thu, 8 Sep 2022 19:37:24 -0400
Subject: [PATCH] Unescaped escaped commas in regex-based removeparam values

Related discussion:
- https://github.com/uBlockOrigin/uAssets/discussions/14683#discussioncomment-3559284
---
 src/js/static-net-filtering.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/js/static-net-filtering.js b/src/js/static-net-filtering.js
index 1a97ffd99..5df4fe53f 100644
--- a/src/js/static-net-filtering.js
+++ b/src/js/static-net-filtering.js
@@ -3427,6 +3427,8 @@ class FilterCompiler {
         }
     }
 
+    // https://github.com/uBlockOrigin/uAssets/discussions/14683#discussioncomment-3559284
+    //   If the removeparam value is a regex, unescape escaped commas
     extractTokenFromQuerypruneValue() {
         const pattern = this.modifyValue;
         if ( pattern === '*' || pattern.charCodeAt(0) === 0x7E /* '~' */ ) {
@@ -3434,7 +3436,9 @@ class FilterCompiler {
         }
         const match = /^\/(.+)\/i?$/.exec(pattern);
         if ( match !== null ) {
-            return this.extractTokenFromRegex(match[1]);
+            return this.extractTokenFromRegex(
+                match[1].replace(/(\{\d*)\\,/, '$1,')
+            );
         }
         if ( pattern.startsWith('|') ) {
             return this.extractTokenFromRegex('\\b' + pattern.slice(1));