How to optionally create an attribute?

Hiya. I've got some elements that I'd like to optionally have attributes.
I tried the obvious:

<element>
 <xsl:if test="$condition">
  <xsl:attribute name="name">value</xsl:attribute>
 </xsl:if>
 ...
</element>

but (the latest) XT did not like this. The other naive approach:

<xsl:choose>
 <xsl:when test="$condition">
  <element name="value">
   ...
  </element>
 </xsl:when>
 <xsl:otherwise>
  <element>
   ...
  </element>
 </xsl:otherwise>
</xsl:choose>

works but requires replicating the ... elements twice, which is cumbersome
and (hopefully) unnecessary. Can anyone suggest an alternate approach?
Please reply directly (and to the list if this is of general interest) as
I'm subscribing in digest mode. Thanks.

- donald


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