From a95ef16e064a4012de6aef10100daaef6beeb2c2 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Sun, 2 Feb 2020 10:05:15 -0500
Subject: [PATCH] Fix token position value when removing leading wildcard

Related issue:
- https://www.reddit.com/r/uBlockOrigin/comments/ex8ggg/

Regression from:
- https://github.com/gorhill/uBlock/commit/7971b223855d
---
 src/js/static-net-filtering.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/js/static-net-filtering.js b/src/js/static-net-filtering.js
index 36174a383..f5c42bfd9 100644
--- a/src/js/static-net-filtering.js
+++ b/src/js/static-net-filtering.js
@@ -2531,10 +2531,13 @@ const FilterParser = class {
         // https://www.reddit.com/r/uBlockOrigin/comments/dpcvfx/
         //   Since we found a valid token, we can get rid of leading/trailing
         //   wildcards if any.
+        // https://github.com/gorhill/uBlock/commit/7971b223855d#commitcomment-37077525
+        //   Mind that changing the pattern may change token start index.
         if ( this.firstWildcardPos === 0 ) {
             this.f = this.f.slice(1);
             this.firstWildcardPos = this.secondWildcardPos;
             this.secondWildcardPos = -1;
+            this.tokenBeg -= 1;
         }
         if ( this.firstWildcardPos !== -1 ) {
             const lastCharPos = this.f.length - 1;