Delf a écrit :

> Wrong...

I think this is a solution:

<xsl:key name="id" match="tag" use="." />

<xsl:variable name="groupTagList">
 <tags>

  <xsl:for-each select="//data/items/item[ @isVisible = '1' ]
    /tags/tag[ generate-id( . ) = generate-id( key( 'id', . )[1] )]">

   <tag>
    <xsl:attribute name="number">
     <xsl:value-of select="count( //data/items/
       item[ @isVisible = '1' ]/tags/tag[ . = current() ] )" />

    </xsl:attribute>
    <xsl:value-of select="." />
   </tag>
  </xsl:for-each>
 </tags>
</xsl:variable>

<xsl:variable name="tagList">
 <tags>
  <xsl:apply-templates select="msxsl:node-set(
    $groupTagList )//tags/tag" mode="sorting">

   <xsl:sort select="@number" data-type="number" order="descending" />
   <xsl:sort select="." data-type="text" order="ascending" />
  </xsl:apply-templates>
 </tags>
</xsl:variable>

<xsl:template match="tag" mode="sorting">
 <xsl:copy-of select="." />
</xsl:template>

And I get the following output:

  achat conpulsif (2)
  art (2)
  peinture (2)
  musique (1)
  piano (1)

Order by DESC number and then ASC label.

--
Delf