Re: Descendants problems

[Brandon Ibach <bibach@xxxxxxxxxxxxxx>]

Quoting Reyes <reyes.garcia@xxxxxxxxxx>:
> >   What, exactly, is in nl?  In other words, what expression resulted
> >in the value of nl?
> >
> I don't understand very good your qzúiestion. But I explain to you what I
> have make.
> 
> [...]
> 
> Where there is this tag "LINK-SICHHINW" I want take the datas from the
> adress in the attribute
>  [ http://reyes-nt-pc:2000/MTU_DEMO/SichPool/Motoren/4000/Deutsch/proof.sgm ].
> I make this with "sgml-parse". In this step, I take nl
> 
   You just answered my question. :)  The node-list, nl, is the result
of (sgml-parse).  This explains the problem.
   The node-list returned by (sgml-parse) is a singleton node-list
containing just the root of the new grove.  In the SGML property set,
the root of the grove, a node of class sgml-document, has no children.
Thus, procedures such as (children) and (descendants) will always
return empty node-lists when applied to this node.
   The (process-children) procedure works around this by checking the
class of the node and returning the value of the document-element
property if the node is an sgml-document.  So, try:

     (select-elements
       (descendants (node-property 'document-element nl)) son)

and I think you'll get what you want.

-Brandon :)


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