Hi list, while solving a somewhat intricate acquisition problem, I came discovered, that the statement, that aq_inner will return an object wrapped by containment only seems to be incorrect. Here is the simplified scenario to show this: Let a and c be attributes of x, let b be an attribute of a. Then x.a.c.a.b is the acquisition tree (as shown in Zope 2.7.0 using a little tool akin showaq) O-[b] | O-O-[a] | | | [x] | O-O-[c] | | | [x] | O-[a] | [x] (self goes to the right, parent down). The important thing is, that aq_inner of this is the same tree. I would have expexted to get the reduced tree O-[b] | O-[a] | [x] but looking at the first tree, it is obvious, why this is not the case. The Documentation says, that ( X o Y ) o ( Y o Z ) is simplified to X o ( Y o Z ). While working out the expression, I could find, that this simplification will close to the end simplify the b o ( a o x ) subtree away, since the next expression starts with ( a o x ). This leaves me a little bit uneasy: when searching x.a.c.a.b.aq_inner, c will be searched even though it is *not* in the containment path of b ! I would very much like a comment on this ... Is this known behavior? Should I have expected this? Stefan. -- -- *DON'T* TRY TO REACH ME DIRECTLY AT ABOVE EMAIL ADDRESS. Any reply -- received off-list at that address will be *silently* and -- *unconditionally* dropped. You can attribute this inconvenience to -- the proliferation of spammers on the Internet. I hope, you can -- understand my position and accept my counter measures.