Hi Norm

  I'm not really convinced by the use case of the XSLT parameters. As how I see the problem, XProc parameters and XSLT parameters are not the same thing. They resemble each other, but only by accident (well, they solve the same problem regarding their reespective language).

  I would rather say that the XSLT step can have a number of options: the input document, the stylesheet, the initial mode, the parameter set, etcetera. But I don't see why it would take the pipeline's parameters as its own. What if you have two XSLT steps that have incompatible parameters that share the same names?

  In my humble opinion, I would rather see something like the following (I didn't follow the XProc story as closely as I would have liked, so please be lenient about possible stupidities):

<p:pipeline name="main" xmlns:p="http://www.w3.org/2007/03/xproc">

  <p:input port="source"/>
  <p:input port="own-params"/>
  <p:input port="db-params"/>
  <p:output port="result"/>

  <!--
    First, preprocess our own XML language instance to get
    Docbook instances.  User can set some params for the
    stylesheet (here, "params" is an XSLT concept).
  -->
  <p:xslt>
    <p:input port="stylesheet">
      <p:document href="own-to-db.xsl"/>
    </p:input>
    <p:input port="params" select="$own-params"/>
  </p:xslt>

  <!--
    Process XInclude.
  -->
  <p:xinclude/>

  <!--
    Then format the resulting Docbook document.  User can
    set some params for the stylesheet (here, "params" is an
    XSLT concept).
  -->
  <p:xslt>
    <p:input port="stylesheet">
      <p:document href="docbook.xsl"/>
    </p:input>
    <p:input port="params" select="$db-params"/>
  </p:xslt>

</p:pipeline>

  I guess I misunderstood something, but I can't see what.

  Anyway, I'm looking forward to listen to you at XML Prague in a few days. Regards,

--drkm

Hi Florent,

Good to see you in Prague! I think the parameter solution we arrived at is very much along the lines you propose. I'll write up a few more thoughts about XProc parameters when I get a chance.