Issue 7268 - Unescape { and } for :-abp-contains()

lib/content/elemHideEmulation.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 331 matching lines @@
   }
 }
 
 class ContainsSelector
 {
   constructor(textContent)
   {
     this.dependsOnDOM = true;
     this.dependsOnCharacterData = true;
 
-    this._regexp = makeRegExpParameter(textContent);
+    this._regexp = makeRegExpParameter(
+      textContent.replace("\\7B ", "{").replace("\\7D ", "}"));
   }
 
   *getSelectors(prefix, subtree, styles, targets)
   {
     for (let element of this.getElements(prefix, subtree, styles, targets))
       yield [makeSelector(element), subtree];
   }
 
   *getElements(prefix, subtree, styles, targets)
   {
@@ skipping 602 matching lines @@
           characterData: shouldObserveCharacterData(this.patterns),
           subtree: true
         }
       );
       this.document.addEventListener("load", this.onLoad.bind(this), true);
     }
   }
 }
 
 exports.ElemHideEmulation = ElemHideEmulation;