RE: checking sequence inside processing-instruction

> > <xsl:template match="processing-instruction('page')">
> 
>   I first thought that was a mistake.  I always used the form
> processing-instruction(page) instead (well, the rare times I 
> used it). 
> But I checked in the REC and saw that both forms are allowed. 
>  Is there any particular reason behind that choice?

XPath 1.0 required the quotes. XPath 2.0 allowed the unquoted name for
consistency with the new syntax element(e) and attribute(a); it was felt
that the quotes were a bad idea because they suggested to users that an
arbitrary expression could be used here, rather than a constant name. I used
the quotes because I didn't know whether the OP was using 1.0 or 2.0.

Michael Kay
http://www.saxonica.com/