In article <Pine.LNX.4.58.0604041305530.11096 / web.artengine.ca>,
  Mathieu Bouchard <matju / artengine.ca> writes:

> And what do you do instead, in the case of methods that take a pathname 
> argument?

An instance of Pathname is returned.

It's consistent with Array#+, at least.
-- 
Tanaka Akira