paratheses and or (|) operator? --converting old WD stylesheet

XSL List:

I'm trying to convert an older http://www.w3.org/TR/WD-xsl based 
stylesheet and run across the following problem (simplified) section:
<xsl:choose>
<xsl:when test="/metadata[($any$ idinfo/(descript/(abstract | purpose | 
supplinf) | browse/browsen) != '')]">
<p><b>Abstract:</b><xsl:value-of 
select="/metadata/idinfo/descript/abstract" /> </p>
       </xsl:when>
       <xsl:otherwise>
           <p>No descriptive information found.</p>
       </xsl:otherwise>
   </xsl:choose>

With the $any$ token and paratheses, this doesn't work in XPath 1.0. 
I've converted this to (which works):
   <xsl:choose>
       <xsl:when test="/metadata[idinfo/descript/abstract |
                                 idinfo/descript/purpose |
                                 idinfo/descript/supplinf |
                                 idinfo/browse/browsen != '']">
       <p><b>Abstract:</b><xsl:value-of 
select="/metadata/idinfo/descript/abstract" /> </p>
       </xsl:when>
       <xsl:otherwise>
           <p>No descriptive information found.</p>
       </xsl:otherwise>
   </xsl:choose>

My question: is there a simpler way to translated the nested paratheses 
of the WD orginal into XPath 1.0? In some cases, I have 30-40 elements 
being tested by this nested approach.
Thanks,

-Eric

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