> 
> which of XSLT processors optimize tail-recursion into a loop?

Saxon and jd.xslt are known to do so. Though of course the exact
circumstances in which they do so need further investigation.
 
>  Is there such thing as partial support for tool recursion in 
> some XSLT processors?

I don't understand the question.

Michael Kay

> 
> David Tolpin
> http://davidashen.net/
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> 


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