Adding attributes to all ancestors of a given node (was RE: [xsl] XSL a

Mac,

(I changed the thread)

You wrote:
>         I am trying to simply duplicate an XML tree with the addition of
> adding an attribute to all the ancestors of a given element.
That's a tip-off. This is an application of a near-identity transformation:

<xsl:template match="node()|@*">
  <xsl:copy>
    <xsl:if test="descendant::*[(_at_)task='1']">
      <xsl:attribute name="task">
         <!-- your attribute's value goes here -->
      </xsl:attribute>
    </xsl:if>
    <xsl:apply-templates select="node()|@*"/>
  </xsl:copy>
</xsl:template>

It simply adds a 'task' attribute to any element that has a descendant with 
your criterion.
Since attributes have no descendants, it isn't a problem to handle them in 
the same template.
Since the template doesn't match the root node (q: why doesn't it?), we 
don't need to worry about it either (it'll be handled by default).
Cheers,
Wendell



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