[Zope3-dev] possible bug in catalog code

[Martijn Faassen]

Jim Fulton wrote:
[snip]
> It would only be safe to use None as a BTree key if all of the keys used
> were None, which wouldn't be very interesting. :)

It'd also make sense if you didn't do a range query, right? I.e. you're 
just looking for (None, None). I realize though that queries with None 
do something else entirely, as they open the range.

Anyway, perhaps a comment should be in place specifying that None cannot 
be indexed; this way it just looked surprising.

Now I'm going to figure out why an object that has a repr() with the 
same memory address in it isn't itself when the 'is' operator is used, 
and one of them doesn't have a __name__ and __parent__. This is the next 
thing that's confusing our cataloging.

Regards,

Martijn