[Zope-PAS] Id mangling.

[Lennart Regebro]

Zbir: You mentioned something about it being necessary to mangle the id 
with the authenticator. I didn't understand why, could you try again? :)

As I see it, the id prefix is to separate different users from different 
user *sources*, that is different enumerators, so that you can have 
different user sources with the same user id. In that case, it should be 
the enumerator that is used as prefix. Also, since the enumerator will 
only return users with it's own prefix, it is clear that this indeed is 
the idea behind it all.

So: I don't get it. It is clearly the case that the user prefix must be 
the enumerator prefix. So why prefix it with the authenticator id?