Issue 6868 - Enable capturing of surrounding wildcards for rewrite filters

test/filterClasses.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 282 matching lines @@
   test.done();
 };
 
 exports.testSpecialCharacters = function(test)
 {
   compareFilter(test, "/ddd|f?a[s]d/", ["type=filterlist", "text=/ddd|f?a[s]d/", "regexp=ddd|f?a[s]d"]);
   compareFilter(test, "*asdf*d**dd*", ["type=filterlist", "text=*asdf*d**dd*", "regexp=asdf.*d.*dd"]);
   compareFilter(test, "|*asd|f*d**dd*|", ["type=filterlist", "text=|*asd|f*d**dd*|", "regexp=^.*asd\\|f.*d.*dd.*$"]);
   compareFilter(test, "dd[]{}$%<>&()d", ["type=filterlist", "text=dd[]{}$%<>&()d", "regexp=dd\\[\\]\\{\\}\\$\\%\\<\\>\\&\\(\\)d"]);
 
-  // No optimizations for rewrite filters (#6868).
-  compareFilter(test, "*asdf*d**dd*$rewrite=", ["type=filterlist", "text=*asdf*d**dd*$rewrite=", "regexp=.*asdf.*d.*.*dd.*", "rewrite=", "contentType=" + (defaultTypes & ~(t.SCRIPT | t.SUBDOCUMENT | t.OBJECT | t.OBJECT_SUBREQUEST))]);
+  // Leading and trailing wildcards should be left in for rewrite filters (#6868).
+  compareFilter(test, "*asdf*d**dd*$rewrite=", ["type=filterlist", "text=*asdf*d**dd*$rewrite=", "regexp=.*asdf.*d.*dd.*", "rewrite=", "contentType=" + (defaultTypes & ~(t.SCRIPT | t.SUBDOCUMENT | t.OBJECT | t.OBJECT_SUBREQUEST))]);
 
   compareFilter(test, "@@/ddd|f?a[s]d/", ["type=whitelist", "text=@@/ddd|f?a[s]d/", "regexp=ddd|f?a[s]d", "contentType=" + defaultTypes]);
   compareFilter(test, "@@*asdf*d**dd*", ["type=whitelist", "text=@@*asdf*d**dd*", "regexp=asdf.*d.*dd", "contentType=" + defaultTypes]);
   compareFilter(test, "@@|*asd|f*d**dd*|", ["type=whitelist", "text=@@|*asd|f*d**dd*|", "regexp=^.*asd\\|f.*d.*dd.*$", "contentType=" + defaultTypes]);
   compareFilter(test, "@@dd[]{}$%<>&()d", ["type=whitelist", "text=@@dd[]{}$%<>&()d", "regexp=dd\\[\\]\\{\\}\\$\\%\\<\\>\\&\\(\\)d", "contentType=" + defaultTypes]);
 
   test.done();
 };
 
 exports.testFilterOptions = function(test)
@@ skipping 291 matching lines @@
   // This compares the references to make sure that both refer to the same
   // object (#6815).
   test.equal(filter1.domains, filter2.domains);
 
   let filter3 = Filter.fromText("www.example.com##.bar");
 
   test.notEqual(filter2.domains, filter3.domains);
 
   test.done();
 };