Internal Lookup question.

Hi,

Is there any way to do a resource lookup and if that failed to get the
deepest resource found on the path.

For example, if I request /foo/bar/biz/file.bla and only /foo/bar part
exist, I would be able to access the resource responsible for foo/bar and
have /biz/file.bla in some variable.

It might be something very obvious, but I can't find it.

Thanks,
    Alex.

alex@access.com.au