[Zope] index_object() in CatalogPathAwareness

[Lennart Regebro]

From: "Casey Duncan" <casey@zope.com>
> Except then it would be impossible to add CatalogAware objects with no
> catalog, and the error would be pretty obscure to most users.
>
> Maybe it should write a BLATHER level entry to the log file instead.

I wouldn't even go that far. I think the current behaviour is the most
reasonable default, and for any non-trivial implementation you end up
overriding index_object() anyway. :-)