Hi,

> I would have thought the following templates should produce the same
> result, one uses choose/when, one uses if, however the value-of at the
> end of template t2 seems to keep track of the whole string... 
> if I step
> through the code the debugger stays on that line the number 
> of times the
> template has been recursively called - which is a bit strange...
> 
> Using this data:
>   
> <node>1 | 2 | 3 | 4 | 5</node>
> 
> I would expect this result:
> 
> 1 2 3 4 5
> 
> which is what t1 gives me, whereas t2 produces:
> 
>  1  2  3  4  5 4 | 5 3 | 4 | 5 2 | 3 | 4 | 51 | 2 | 3 | 4 | 5
> 
> why is this? saxon and msxml4 both produce the same so Im 
> guessing its a
> gap in my understanding rather than a processor issue...
> 
> <xsl:template name="t1">
>   <xsl:param name="string" select="''"/>
>   <xsl:choose>
>     <xsl:when test="contains($string,'|')">
>       <xsl:value-of select="substring-before($string,'|')"/>
>       <xsl:call-template name="t1">
>         <xsl:with-param name="string"
> select="substring-after($string,'|')"/>
>       </xsl:call-template>
>     </xsl:when>
>     <xsl:otherwise>
>       <xsl:value-of select="$string"/>
>     </xsl:otherwise>
>    </xsl:choose>
> </xsl:template>
> 
> 
> <xsl:template name="t2">
>   <xsl:param name="string" select="''"/>
>     <xsl:if test="contains($string,'|')">
>       <xsl:value-of select="substring-before($string,'|')"/>
>       <xsl:call-template name="t2">
>         <xsl:with-param name="string"
> select="substring-after($string,'|')"/>
>       </xsl:call-template>
>     </xsl:if>
>       <xsl:value-of select="$string"/>

Because here you're outputting the value of $string every time the template is called.

Santtu

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list