I haven't had any problems using msxsl extensions internally in xmlspy
(maybe i'm not using the debugger?):

<xsl:stylesheet
	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
	xmlns:msxsl="urn:schemas-microsoft-com:xslt"
	exclude-result-prefixes="msxsl">

<xsl:value-of select="msxsl:node-set($foo)"/>


> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of dave beattie
> Sent: Tuesday, February 11, 2003 7:39 AM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject:  Debugging XSL with XML Spy 5
>
>
> Does anybody know anything about the internal xsl processor that
> ships with
> XML Spy 5 ?
> This is the processor that Spy uses when with its debugging tool.
> The problem I have is that my transforms use an extension
> function - namely
> msxml's node-set function. Does anybody know if there is an equivalent in
> Spy's processor and if so what the namespace is.
>
> Thanks
>
> Dave
>
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
>
>


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