[xsl] Removing nodes with text content ?

["Fabien Tillier" <f.tillier@xxxxxxxx>]

Hi List.
I am trying to remove some Hierarchy in a document but can't seem to
preserve text content.

I have this kind of xml document (simplified...)
<xml>
	<para>
		<phrase role="rtf">
      norepinephrine
	      </phrase>
            <phrase role="rtf">
	      transporter<subscript/>
              <emphasis>(h) </emphasis>
           </phrase>
	    <phrase role="rtf">
      		(antagonist radioligand)
	    </phrase>
      </para>
</xml>

I would like to remove the intermediary <phrase> nodes to avoid line
breaks (which are highly desirable on other places, but here are
annoying me), and thus having everything on a single line (using the
docbook stylesheets, already customized).

Thus I want

<xml>
	<para>
		<phrase role="rtf">
      norepinephrine transporter
	<subscript/>
	<emphasis>(h) </emphasis>
             (antagonist radioligand)
    	</phrase>
      </para>
</xml>

I have tried with some copy templates

<xsl:template match="para">
	<phrase>
		<xsl:if test=".//phrase[@role='rtf']">
			<xsl:attribute name="role">rtf</xsl:attribute>
		</xsl:if>
		<xsl:apply-templates/>
	</phrase>
</xsl:template>
<xsl:template match="phrase[@role='rtf']" >
   	<xsl:copy>
   		<xsl:apply-templates select="./*"/>
   	</xsl:copy>
</xsl:template>

<xsl:template match="node() | @*">
	<xsl:copy><xsl:apply-templates select="@* | node()"/></xsl:copy>
</xsl:template>

But the result I get is
<?xml version="1.0" encoding="UTF-8"?>
<phrase role="rtf">
                     <phrase/>
                     <phrase><subscript/><emphasis>(h)
</emphasis></phrase>
                     <phrase/>
</phrase>

Which is absolutely not what I want...
Any clever hint on how I should proceed ?

Thank you in advance
Best regards,
Fabien