[jQuery] Stopping event propagation on non-standard event types

[Jonathan Sharp]

$(window)
     .bind('testEvent', function(e) {
      alert('1');
      e.stopPropagation();
      e.preventDefault();
      return false;
     })
     .bind('testEvent', function() {
      alert('2');
     })
     .trigger('testEvent');

The above code doesn't stop the testEvent from triggering the second alert.
Is the propagation prevention just for standard events such as 'click',
etc.?

-js