Supporting glossary hierarchies

ws/Docbook/Extensions/Xsl/docbook2docbook.xsl

@@ -137,7 +137,7 @@
         </xsl:comment>
     </xsl:template>
     
-    <xsl:template match="db:glossary/db:glosslist/db:glossentry[not(key('internRef', @xml:id))]">
+    <xsl:template match="db:glossary/db:glosslist//db:glossentry[not(key('internRef', @xml:id)) and not(key('internRef', .//*/@xml:id))]">
         <xsl:comment>
              <xsl:text>Excluding non referenced glossary entry '</xsl:text>
              <xsl:value-of select="db:glossterm"/>