I have just uploaded XML::LibXSLT 1.52 to CPAN.

This is a feature release, introducing Perl extension functions to XSLT.

Here's the docs added for those who can't contain their excitement:

=head2 register_function

   XML::LibXSLT-> register_function($uri, $name, $subref);

Registers an XSLT extension function mapped to the given URI. For 
example:

   XML::LibXSLT-> register_function("urn:foo", "bar",
     sub { scalar localtime });

Will register a C<bar>  function in the C<urn:foo> namespace (which you 
have to define in your XSLT using C<xmlns:...> ) that will return the 
current date and time as a string:

   <xsl:stylesheet version="1.0"
     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
     xmlns:foo="urn:foo"> 
   <xsl:template match="/"> 
     The time is: <xsl:value-of select="foo:bar()"/> 
   </xsl:template> 
   </xsl:stylesheet> 

If you pass parameters to your extension function they are all down
converted into strings at runtime - there is no internal access to
nodelists. The return from your function is also just a plain string, 
there is no support for returning a nodelist.

EOPOD

Note that I haven't tested this terribly thoroughly, so it may be buggy 
- I'm relying on the community to tell me.

Matt.

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