On Sun, Jun 10, 2012 at 09:43:42PM +0100, Michael Kay scripsit:
> > In my ideal world the syntax would evolve so you could constrain the
> > categories -- "\p{Pd except '-'}", "any character that is some kind
> > of dash except for U+002D "hyphen-minus", for example -- since that
> > would make this even more useful for functions that take regular
> > expressions such as tokenize().
> 
> XPath regular expressions allow a subtraction operator within a
> character class:
> 
> [\p{Lu}-[IO]]
> 
> allows any upper case letter except I or O.

Don't know whether to be embarrassed I missed that or delighted it
exists.

Thanks, Michael!

-- 
Graydon Saunders        XML tools and processes for information delivery.
graydon@xxxxxxxxx