how to check if a method has been aliased?

[Charlie Fleed]

I see. This is an option, thank you very much. I was wondering if there is something in Ruby that has been introduced specifically for this purpose. Something involving a defined? call, you know, this method that tells you if a name corresponds to a class, a variable, a method, a constant or nothing. But I had no luck trying to do it this way.
I guess I'm going to go with the solution you suggested but I'm still interested in knowing if there's some other way to do it. So if anyone has other inputs... :)