Your <city> elements are not siblings of each other, and they are
definitely not siblings of a contents element. Change

<xsl:for-each 
> select="contents/entry/city[not(.=preceding-sibling::contents/
> entry/city)]">

to

<xsl:for-each 
> select="contents/entry[not(city=preceding-sibling::entry/city)]">

Your code is going from a city element to a preceding-sibling::contents,
which is obviously wrong.

Michael Kay
Software AG
home: Michael.H.Kay@xxxxxxxxxxxx
work: Michael.Kay@xxxxxxxxxxxxxx 

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of William S.
> Sent: 25 June 2002 11:02
> To: xsl-list
> Subject:  sort; no duplicates
> 
> 
> I have looked at the FAQ(s) and not been able to get the 
> sort/no duplicate thing to work. Below is an example of an 
> XML and XSL file. All I want to do is print out the data so I 
> have a list of cities with no duplicates. With the example 
> XML below that would be:
> 
> 	'boston new york'
> 
> Can someone revise my stylesheet so it will work.
> I am using php with Sablotron.
> 
> *** sort.xml
>  
> <?xml version="1.0" ?>
> <contents>
> <entry>
> <city>boston</city><record>one</record>
> </entry>
>  
> <entry>
> <city>boston</city><record>two</record>
> </entry>
>  
> <entry>
> <city>new york</city><record>one</record>
> </entry>
> </contents>
> 
> *** sort.xsl
>  
> <xsl:template match="/"> <!-- At top of page -->
>  
> <xsl:for-each 
> select="contents/entry/city[not(.=preceding-sibling::contents/
> entry/city)]">
>         <xsl:sort/>
>         <xsl:value-of select="."/>
> </xsl:for-each>
>  
> </xsl:template> <!-- At bottom of page -->
> -- 
> Bill
> Amsterdam, NL
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> 


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