[Zope3-Users] Seeking Reference Guide on TAL/TALES/METAL

[Jeff Rush]

I've been searching and haven't managed to find the definitive reference 
guide for the particular dialect of TAL/TALES/METAL that is bundled with 
Zope 3.  There are various fragmentary and somewhat divergent documents 
around and little about how the particular TALES namespaces provided by Zope 
3 work in complex cases.

  http://www.zope.org/Wikis/DevSite/Projects/ZPT/TAL%20Specification%201.4

  http://www.zope.org/Wikis/DevSite/Projects/ZPT/TALES%20Specification%201.3

There are no .txt ReST documents under the TAL and TALES source directories, 
nor anything in the very nice ++APIDOC++ guide.

---

My specific question is how evaluation of the path expression "X/Z" is 
handled.  It *seems* to be:

     X.__getitem__('Y')    # X['Y']

whereas I'm trying to get:

     X.__getattr__('Y')    # X.Y

Under Zope 2, as I recall, it would try several algorithms; attribute, 
mapping, sequence.  And I'm wondering if that mechanism was simplified for 
Zope 3, and in what way.

-Jeff