Julio Maia writes:
 > I'm trying to create a tag to evaluate the expression passed to it, adding in the 
 >expression eval namespace a variable that contains the result of dtml processing of 
 >the tag's block. For instance, the following construct:
 > <dtml-bvar "foo(a=1)" var="block">
 >    some text <dtml-var "1+2">
 > </dtml-bvar>
 > would invoke the expression "foo(a=1)" with a variable named 'block' set to 'some 
 >text 3' in the expression's namespace (btw, is it possible to achieve this using 
 >regular dtml?).
What a construction! I do not like it.

 > However, I couldn't find a way to set a variable in the namespace used in the 
 >evaluation of the expression. I've tried to insert an entry in the mappings passed to 
 >the expression eval() method as follows:
Push a new mapping onto the namespace (with its "push" method).
Do not forget, to pop it after your tag.


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