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Re: simple case of IRIs for Components in WSDL 2.0

From: Pat Hayes <phayes@ihmc.us>
Date: Tue, 18 Oct 2005 12:05:04 -0500
Message-Id: <p06230901bf7ada399cf9@[10.100.0.11]>
To: Bijan Parsia <bparsia@isr.umd.edu>
Cc: public-ws-desc-comments@w3.org, "Henry S. Thompson" <ht@inf.ed.ac.uk>, public-ws-desc-comments-request@w3.org, Jonathan Marsh <jmarsh@microsoft.com>, Pat Hayes <phayes@ihmc.us>, David Orchard <dorchard@bea.com>

>
>>BTW, one thing I still don't understand is why the parens cause a 
>>parsing problem. The XPointer syntax results in balanced parens so 
>>it should be easy to parse, e.g. when the URI-Reference is the 
>>argument of some function call.
>
>The problem is that Pat wants to use parentheses as token delimiters 
>*and* he wants URIs not *not* be specially quoted. So there's an 
>ambiguity from his perspective. You see this some times in mail 
>clients that "recognize" uris. E.g.,
>	"""Boris wrote it up (http://www.example.com), check it out.""""
>
>If the program is sticking to the spec the uri highlighted will be:
>	http://www.example.com), ),
>Which is broken :) "Smart" clients will do:
>	http://www.example.com
>
>via an heuristic, which you clearly can't do for a formal grammar.
>
>So it's not the balancing, it's the using, especially as a 
>terminating character.

For the record: yes, exactly.

U/IRIs, I am coming to realize, cannot be treated as embedded text 
strings. They have to be placed in protective wrappers, or fully 
escaped, or somehow isolated from any surrounding text. No doubt this 
has been obvious to everyone for the longest time, and I am just 
waking up to reality. Sorry y'all got to hear my howling.

Pat


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Received on Tuesday, 18 October 2005 17:05:17 GMT

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