Re: [xml-dev] Inconsistent expansion of {} inside strings ...

[David <dlee@calldei.com>]

Thanks I realized 5 minutes later I had posted to the wrong list, but 
your answer is what I was looking for, thanks.
Yes this is an xquery question.
So attribute values are "special contexts" where {} is evaluated but not 
in other contexts that "quotes" are used.
Thanks.



-------------------------

David A. Lee
dlee@calldei.com
http://www.calldei.com
http://www.xmlsh.org


On 5/10/2010 10:40 AM, David Carlisle wrote:
> On 10/05/2010 15:28, David wrote:
> > I ran into this today and it surprised me.  I'm sure this is "as
> > documented" but was wondering if anyone could provide a rationale ?
> >
> > {} expansion occurs within strings in attributes but not in "plain 
> strings"
>
> You didn't say, but you're asking about xquery syntax.
>
>
> in xslt (where the notation comes from) the rationale is that {} is 
> never a special character in Xpath, it is just used to trigger xpath 
> evaluation in certain contexts, (notably attribute values of literal 
> result elements).
>
> In Xquery, where of course {} is a special character the rationale has 
> to be reworded slightly but is essentially the same, allowing xquery 
> evaluation within a string literal would complicate things with no 
> extra functionality as you can always just use concat if you need to 
> construct a string.
>
> David
>
>
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