[Zope] How to create a new TAL statement?

[Garito]

Tino Wildenhain escribió:
> Garito schrieb:
>> Hi all!
>>
>> As Aj and Chris advise my to forget the __getattr__ bussiness I try 
>> to solve the same question by other ways
>>
>> Now I have a new question:
>>
>> Can you point me to some help about how to create a new TAL statement?
>>
>> I would like to create a tal:yanged (for example) statement to control 
>
> <tal:yanged replace="/foo/bar" />
>
> would work :-) But what are you really trying to do and why?
>
> Regards
> Tino
Did you read my last thread?

I'm talking about <tal:anything tal:yanged="/foo/bar" /> not <tal:yanged 
tal:replace="/foo/bar" />

What I need is control the expression far away from the normal way (I 
want to process the result automatically before return the result)

Aj and Chris dissapoint me to modify the __gettattr__ member of my class 
to make this calculation

Then I thing I can make this calculation via some tal:statement

Some idea?

Thanks!

-- 
Mis Cosas
http://blogs.sistes.net/Garito