Re: [xsl] Set difference in xsl:number/@count, xsl:key/@match

[Deborah Pickett <debbiep-list-xsl@xxxxxxxxxx>]

Hi Ken,

G. Ken Holman wrote:
> >   <xsl:number count="*[contains(@class, ' figure ')]
> >               except *[contains(@class, ' flowchart ')]"/>
> > only set difference doesn't work in xsl:number/@count, even in XSLT 2.0.
> Have you tried:
>  count="*[contains(@class,' figure ') and not(contains(@class,' 
> flowchart '))]"

Yes, that would do the same as a set difference (thanks, and duh on my 
part), but it fails the encapsulation requirement which you snipped from 
my original message: I don't know how many "and not()"s there are going 
to be ahead of time, so constructing the pattern that way is difficult.

(It may seem like an artificial requirement, but it makes perfect sense 
in the context of DITA, with its `-la-carte approach to specializations. 
 I could explain it, but I'd bore you and everyone else.)  That's why I 
was hoping for a key-based solution, where the encapsulation behaviour 
is spot on, but it doesn't give me set difference (or so I think).

I suppose I could generate the count pattern dynamically, but that feels 
even dirtier to me.

> (though I 
> don't know how you plan to do your numbering if one construct has both 
> properties).

(I've got a similar <xsl:number> for just flowcharts, and for extensions 
thereof.  Turtles all the way down, and all that.)