probably something like below:

On Wed, Feb 3, 2010 at 12:59 PM, ac <ac@xxxxxxxxxxxxx> wrote:
> 1. a string is a valid potential QName (e.g. match + what regex?, or other
> option)

$str castable as xs:QName

> 2. all strings in a sequence are valid potential QNames

every $x in $str satisfies ($x castable as xs:QName)



-- 
Regards,
Mukul Gandhi