[Catalyst] logout and go back to previous session?

[Andrew Strader]

hubert depesz lubaczewski wrote:
> but. after this "named" user will logout, or close the browser and
> reopen - we should be able to go back to the previous "anonymous"
> user.

When the registered user logs out, why must the application change back to
the previous anonymous session? Why can't it generate a new anonymous
session? A user of a shared computer that doesn't register on your site
wouldn't expect their session to be saved forever.