<?xml version="1.0"?>

 <!-- This stylesheet does some post-processing on attachments. -->

 <xsl:stylesheet version="1.0"

 		xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

 <xsl:template match="attachment">

   <!-- Avoid xsl:copy so that any attributes (including xml:base) are lost -->

   <attachment>

     <xsl:attribute name="ispatch">

       <xsl:value-of select="@ispatch"/>

     </xsl:attribute>

     <xsl:attribute name="isobsolete">

       <xsl:value-of select="isobsolete"/>

     </xsl:attribute>

     <xsl:apply-templates/>

   </attachment>

 </xsl:template>

 <xsl:template match="attachment/isobsolete"/>

 <xsl:template match="attachment/desc[normalize-space(.)='']">

   <desc>

     <xsl:value-of select="../filename"/>

   </desc>

 </xsl:template>

 <xsl:template match="*">

   <xsl:copy>

     <xsl:for-each select="@*">

       <xsl:copy/>

     </xsl:for-each>

     <xsl:apply-templates/>

   </xsl:copy>

 </xsl:template>

 </xsl:stylesheet>