Hello, If you can't use XSLT 2.0 which has built-in support for regular expressions you have to import the EXSLT regexp extension in an XSLT 1.0 stylesheet but you have to use MSXML or Xalan in oXygen. For MSXML the EXSLT stylesheets need a modification: import the MSXML stylesheet directly instead of the wrapper stylesheet that includes the MSXML stylesheet with a func:script element. For example for the EXSLT regexp replace stylesheet you have to import in your stylesheet directly regexp.replace.msxsl.xsl: <xsl:import href="regexp.replace.msxsl.xsl" /> instead of <xsl:import href="regexp.replace.xsl" /> which contains an element <func:script language="exslt:msxsl" implements-prefix="regexp" src="regexp.replace.msxsl.xsl"/> as in the EXSLT example on the exslt.org website. For Xalan you have to modify the EXSLT stylesheet to conform with the Xalan extension rules specified on the Xalan Extensions page: http://xml.apache.org/xalan-j/extensions.html#basic-pattern The JavaScript code from the EXSLT stylesheets (for example regexp.replace.js) must be adapted to Xalan as in the example which you can find on the same Xalan page: http://xml.apache.org/xalan-j/extensions.html#ex-basic You have to add bsf.jar (the Bean Scripting Framework) and js.jar (the Apache Rhino project) as XSLT extensions to the oXygen transformation scenario that processes your EXSLT enabled stylesheet with Xalan. These jar files are needed for adding a JavaScript extension to Xalan. The oXygen User Manual describes how to set an XSLT extension in an oXygen transformation scenario: http://www.oxygenxml.com/doc/ug-standalone/defining-new-transformation-scena... http://www.oxygenxml.com/doc/ug-standalone/xslt-xquery-extensions.html Regards, Sorin ohaya@cox.net wrote:

Hi,

I was wondering if it's possible to get oXygen 9.1 working with EXSLT?

I'm particularly interested in regExp, but when I try that, I get a debugger error "Unknown Saxon extension element: script".

If someone has been able to get this working, can you please share how you accomplished this?

Thanks, Jim

P.S. I can't use XSLT 2.0 because it won't be available in another environment which is the target.