anchor.diff:    final List<String> extraVmOptions;
     List<Uri> _dart2JsBootstrapDependencies;
     Set<String> _testListPossibleFilenames;
  +  RegExp _selectorFilenameRegExp;
   
     static final Uri co19SuiteLocation = Repository.uri.resolve("tests/co19_2/");
   
  
positive.code:             .resolve('dart-sdk/bin/snapshots/dart2js.dart.snapshot')
        ];
      }
      if (configuration.testList != null) {
        _testListPossibleFilenames = Set<String>();
        for (String s in configuration.testList) {
  
negative.code:         }
        }
      }
  
      // Initialize _selectorFilenameRegExp
      String pattern = configuration.selectors[suiteName].pattern;
      if (pattern.contains("/")) {
        String lastPart = pattern.substring(pattern.lastIndexOf("/") + 1);
        // If the selector is a multitest name ending in a number or 'none'
        // we also accept test file names that don't contain that last part.
        if (int.tryParse(lastPart) != null || lastPart == "none") {
          pattern = pattern.substring(0, pattern.lastIndexOf("/"));
        }
      }
      _selectorFilenameRegExp = new RegExp(pattern);
    }
  
    /**
  