Re: DOCBOOK-APPS: "--" again; this time via passivetex

[Tim Waugh <twaugh@redhat.com>]

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On Fri, Oct 12, 2001 at 06:02:20PM +0200, Jirka Kosek wrote:

> PassiveTeX reads directly XML source so there is no preprocessing stage
> as in JadeTeX which can turn -- into -\/-\/. Standard TeX ligature
> processing cann't be turned off AFAIK. Maybe Sebastian could talk more
> on this topic.
>=20
> > Any ideas on how to fix it, or even whereabouts the bug is?
>=20
> If you want quick workaround, you can insert zero-width joining space
> character (?) between two -:
>=20
> <para>Two dashes or not two dashes: -&#x200b;-?</para>

We already have a preprocessing stage of course: XSL-T.  Here is some
XSL that works around the problem in a better way, by translating '--'
in the XML source into '-&#x200b;-' in the XSL-FO.

Tim.
*/

<?xml version=3D'1.0'?>
<xsl:stylesheet xmlns:xsl=3D"http://www.w3.org/1999/XSL/Transform"
                xmlns:fo=3D"http://www.w3.org/1999/XSL/Format"
                version=3D'1.0'>

<!-- This works around an xmltex bug: two or three dashes -->
<!-- together become a ligature.                          -->
<xsl:template name=3D"fix-dash">
 <xsl:param name=3D"str"/>
 <xsl:choose>
  <xsl:when test=3D"contains($str,'--')">
   <xsl:call-template name=3D"fix-dash">
    <xsl:with-param name=3D"str">
     <xsl:value-of select=3D"substring-before($str,'--')"/>
     <xsl:text>-&#x200b;-</xsl:text>
     <xsl:value-of select=3D"substring-after($str,'--')"/>
    </xsl:with-param>
   </xsl:call-template>
  </xsl:when>
  <xsl:otherwise>
   <xsl:value-of select=3D"$str"/>
  </xsl:otherwise>
 </xsl:choose>
</xsl:template>

<xsl:template match=3D"text()">
 <xsl:call-template name=3D"fix-dash">
  <xsl:with-param name=3D"str" select=3D"."/>
 </xsl:call-template>
</xsl:template>

</xsl:stylesheet>


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