lpath to select last item

[Pablo Rodriguez <oinos@gmx.es>]

Dear list,

I have the following sample:

  \startbuffer[demo]
    <document>
    <h2 id="heading">Heading</h2>
      <ul>
        <li>list</li>
      </ul>
    <h2 id="heading-1">Heading</h2>
      <ul>
        <li>list
        <ul>
           <li>list</li>
        </ul></li>
      </ul>
    <h2 id="heading-2">Heading</h2>
      <ul>
        <li>list
        <ul>
          <li>list
          <ul>
            <li>list</li>
          </ul></li>
        </ul></li>
      </ul>
    </document>
  \stopbuffer

  \startxmlsetups xml:demo:base
      \xmlsetsetup{#1}{document|h2|ul|li}{xml:*}
      %~ \xmlsetsetup{#1}{ul/li/!ul}{xml:last:item} % nothing changes
      %~ \xmlsetsetup{#1}{ul/li/!li}{xml:last:item} % blank item inserted
      %~ \xmlsetsetup{#1}{h2/**/ul/li}{xml:last:item} % nothing changes
      \xmlsetsetup{#1}{h2/***/ul/li/!ul}{xml:last:item} % shouldn’t be
this one?
  \stopxmlsetups

  \xmlregistersetup{xml:demo:base}

  \startxmlsetups xml:document
      \xmlflush{#1}
  \stopxmlsetups

  \startxmlsetups xml:h2
      \section{\xmlflush{#1}}
  \stopxmlsetups

  \startxmlsetups xml:ul
      \startitemize\xmlflush{#1}\stopitemize
  \stopxmlsetups

  \startxmlsetups xml:li
      \startitem\xmlflush{#1}\stopitem
  \stopxmlsetups

  \startxmlsetups xml:last:item
      \startitem\red\xmlflush{#1}\stopitem
  \stopxmlsetups

  \starttext
      \xmlprocessbuffer{main}{demo}{}
  \stoptext

I need to be able to select the last <li> (the one with no <ul> child)
in the <h2> element.

I thought that the lpath for that would be "h2/***/ul/li/!ul", but I
don’t know what I’m missing, since it doesn’t work at all.

Which would be the right lpath to select the last item in each list?

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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