Issue 5249 - Implement :-abp-contains()

chrome/content/elemHideEmulation.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 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 232 matching lines @@
     for (let element of this.getElements(prefix, subtree, stylesheet))
       yield [makeSelector(element, ""), subtree];
   },
 
   *getElements(prefix, subtree, stylesheet)
   {
     let actualPrefix = (!prefix || incompletePrefixRegexp.test(prefix)) ?
         prefix + "*" : prefix;
     let elements = subtree.querySelectorAll(actualPrefix);
     for (let element of elements)
-      if (element.textContent == this._text)
+      if (element.textContent.includes(this._text))
         yield element;
   }
 };
 
 function PropsSelector(propertyExpression)
 {
   let regexpString;
   if (propertyExpression.length >= 2 && propertyExpression[0] == "/" &&
       propertyExpression[propertyExpression.length - 1] == "/")
   {
@@ skipping 95 matching lines @@
                         `pseudo-class :-abp-${match[1]}().`));
       return null;
     }
 
     let suffix = this.parseSelector(selector.substr(content.end + 1));
     if (suffix == null)
       return null;
 
     selectors.push(...suffix);
 
+    if (selectors.length == 1 && selectors[0] instanceof ContainsSelector)
+    {
+      this.window.console.error(
+        new SyntaxError("Failed to parse Adblock Plus " +
+                        `selector ${selector}, can't ` +
+                        "have a lonely :-abp-contains()."));
+      return null;
+    }
     return selectors;
   },
 
   addSelectors(stylesheets)
   {
     let selectors = [];
     let selectorFilters = [];
 
     let elements = [];
     let elementFilters = [];
@@ skipping 68 matching lines @@
 
       if (this.patterns.length > 0)
       {
         let {document} = this.window;
         this.addSelectors(document.styleSheets);
         document.addEventListener("load", this.onLoad.bind(this), true);
       }
     });
   }
 };