translate array delimiters in XSLT

Hi,

To display a list of software releases with ", " delimited that are 
mentioned in XML as ";" delimited:

<procedure software="3.3.7;3.3.8;3.3.9;3.4.0;3.4.2;3.4.4">

I had written in the perl function that cleans up the XML, this sinple 
regular expression:

         if ( $line =~ /software=/ ) {
            $line =~ s#;#, #g ;
         }

Obviously this only worked for software values on the same line and not 
for software values that spanned multiple lines, so I now want to 
transfer this 'logic' from Perl to XSLT. I removed the 3 lines from the 
Perl program, and changed this XSLT:

<xsl:for-each select="@software">
    <xsl:value-of select="."/>
</xsl:for-each>

to:

<xsl:for-each select="@software">
    <xsl:value-of select="."/>,
</xsl:for-each>

but that only produced one "," behind the last SW release, not inbetween.

Reading in Michael Kay's XSLT book on the translate() function made me 
try this:

<xsl:for-each select="translate(@software,';',', ')">
    <xsl:value-of select="."/>
</xsl:for-each>

but that did not prove valid XSLT, even with string() around the array 
@software.

Anyone has a tip to convert ";" to ", " without reverting to Perl?

Cas


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