On 17/10/2024 19:22, Frank Dissinger frank.dissinger@xxxxxxxxxxxx wrote:
> Hello everyone,
>
> The stylesheet below is supposed to add a unique 'id' attribute named
'tocref001', 'tocref002' etc. to all <h2>, <h3> and <p class="rn_heading">
elements which are descendants of an element with an 'id' attribute named
'rn_release_notes'. The script runs without any errors, but does not add any
IDs.


The sample input has e.g.

 B  html xmlns="http://www.w3.org/1999/xhtml"

meaning it has elements in the XHTML namespace, if you use an XSLT 2 or
3 processor like Saxon Java, SaxonJS, SaxonC or Saxon.NET you can add

 B  xpath-default-namespace="http://www.w3.org/1999/xhtml"

on your xsl:stylesheet element in the XSLT code and your match

>
> <!-- Adding id=toc001 attributes to headings to create hyperlink targets for
the TOC -->
> <xsl:template match="*[@id='rn_release_notes']//h2 |
*[@id='rn_release_notes']//h3 |
*[@id='rn_release_notes']//p[@class='rn_heading']">
>

will match XHTML elements.

But with an XSLT 1 processor the h2 and h3 or any unqualified element
name matches such an element in *no* namespace, so your input elements
are not matched.

With XSLT 1, in the XSLT you would need to bind a prefix (e.g. `xhtml`)
to the namespaceB  with a proper namespace declaration

 B  xmlns:xhtml="http://www.w3.org/1999/xhtml"

and then qualify all XHTML element names with that prefix e.g.

 B B  <xsl:template match="*[@id='rn_release_notes']//xhtml:h2 |
*[@id='rn_release_notes']//xhtml:h3 |
*[@id='rn_release_notes']//xhtml:p[@class='rn_heading']">