[publican-list] Help with xsl customization

[Joshua Wulf]

I'm trying to create a custom brand that renders
<mediaobject><videoobject> in html as <iframe>, rather than <embed>.

I've found what I think is the xsl that applies this tag, in
graphics.xsl [1]:

<xsl:template match="videodata">
  <xsl:call-template name="process.image">
    <xsl:with-param name="tag" select="'iframe'"/>
    <xsl:with-param name="alt">
      <xsl:apply-templates select="(../../textobject/phrase)[1]"/>
    </xsl:with-param>
  </xsl:call-template>
</xsl:template>

[1] http://docbook.sourceforge.net/release/xsl/1.76.1/xhtml/graphics.xsl

I'm not sure where this is imported in publican. It's not in
publican/datadir/xsl.

I've created a publican brand [2] with a graphics.xsl file in it, with
the following contents:

<?xml version='1.0'?>
<xsl:stylesheet
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

    <xsl:import
href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"/>
    <xsl:import
href="http://docbook.sourceforge.net/release/xsl/1.76.1/xhtml/graphics.xsl"/>

<xsl:template match="videodata">
  <xsl:call-template name="process.image">
    <xsl:with-param name="tag" select="'iframe'"/>
    <xsl:with-param name="alt">
      <xsl:apply-templates select="(../../textobject/phrase)[1]"/>
    </xsl:with-param>
  </xsl:call-template>
</xsl:template>

</xsl:stylesheet>

[2] https://svn.devel.redhat.com/repos/ecs/toolkit/publican-redhat-video

This doesn't work, though.

Anyone know how to do this?

- Josh