code: function _watchCSSCreateTask(gulp, task, s, config, startFun, endFun) {
      //把构建目标路径传给执行函数
      s.__dest = task.destPath;
      s.source = task.path;
      gulp.task(task.name, function(){        
          return runCSSTaskStream(gulp, s, config, startFun, endFun);
      });
      //gutil.log(gutil.colors.cyan('[watch]:'), gutil.colors.green('create css task ' + task.name));
  }
docs: 创建监听CSS文件任务