anchor.diff:        do {
           List<Command> commandSet = new List<Command>.from(commands);
           if (subtestIndex != 0) {
  -          // NOTE: The first time we enter this loop, all the compilation 
  -          // commands will be executed. On subsequent loop iterations, we 
  +          // NOTE: The first time we enter this loop, all the compilation
  +          // commands will be executed. On subsequent loop iterations, we
             // don't need to do any compilations. Thus we set "commandSet = []".
             commandSet = [];
           }
  
positive.code:   String get dartShellFileName {
      var name = configuration['dart'];
      if (name == '') {
        name = '$buildDir/$executableName';
      }
      TestUtils.ensureExists(name, configuration);
      return name;
    }
  
negative.code: 
        List<Command> commands =
            <Command>[new CompilationCommand("$tempDir/out.dart",
                                             !useSdk,
                                             dart2JsBootstrapDependencies,
                                             compilerPath,
                                             args)];
  