'.' in usernames

[Simon Marlow]

Dean Herington writes:
> The libraries description says about the "User" hierarchy:
>=20
> > The User hierarchy is reserved for users: a user may always use the
> portion of the
> > hierarchy which is formed from his/her email address as follows:
> >     replace the @ by a ., reverse the order of the components,
> capitalise the first letter of each >     component, and=20
> prepend User..
> For example,
> >     simonmar@microsoft.com becomes User.Com.Microsoft.Simonmar.
>=20
> What if the username itself contains a '.'?  (This is fairly common.)
> That could lead to ambiguity.  For example, (perhaps) both
> "John.Smith@foo.com" and "John@smith.foo.com" translate to
> "User.Com.Foo.Smith.John".

Good point.  Replace dots in the username with underscores?

Cheers,
	Simon