如何只指定某个键的scope

[iCloudys]

 hotkeys('a', function(){   
  console.log('a');     
}); 

hotkeys('b', {scope: 's1'}, function(){   
  console.log('s1');   
});   
hotkeys('b', {scope: 's2'}, function(){  
  console.log('s2');  
});

如何在保证a键始终能响应的情况下，切换b键的scope

[Yukiniro]

hotkeys.setScope('s1') or hotkeys.setScope('s2') can do it.