anchor.diff:    }
   
     String getHtmlName(String filename) {
  -    return filename.replaceAll('/', '_').replaceAll(':', '_')
  -        .replaceAll('\\', '_') + configuration['compiler'] + '-' +
  -        configuration['runtime'] + '.html';
  +    var cleanFilename =  filename.replaceAll('/', '_')
  +                                 .replaceAll(':', '_')
  +                                 .replaceAll('\\', '_');
  +
  +    return "$cleanFilename"
  +        "${configuration['compiler']}-${configuration['runtime']}.html";
     }
   
     String get dumpRenderTreeFilename() {
  
positive.code:         '-ea',
          '-classpath', classPath,
          '-Dcom.google.dart.sdk=$sdkDir',
          '-Dcom.google.dart.corelib.SharedTests.test_py=' +
              dartDir + '/tools/test.py',
          'org.junit.runner.JUnitCore'];
      args.addAll(testClasses);
  
  
negative.code:       if (compiler != 'none') {
          commands.add(_compileCommand(
              dartWrapperFilename, compiledDartWrapperFilename,
              compiler, tempDir, vmOptions));
  
          // some tests require compiling multiple input scripts.
          List<String> otherScripts = optionsFromFile['otherScripts'];
  