Re: Handling @profile

Oh.... ick.  Thanks for pointing this out.  And yes, implementations 
should detect profiles that have already been processed and not process 
them again.  But the spec should say this.

Gregg Kellogg wrote:
> Okay, first cut of implementing @profile goes into an infinite loop. Section 7.5 item 3 indicates that any element containing an @profile document is processed as indicated in RDFa Profiles (section 9). Test 0089 contains <head profile="http://www.w3.org/1999/xhtml/vocab">, which causes the parser to load <http://www.w3.org/1999/xhtml/vocab> to extract the vocabulary. That vocabulary also contains the same <head> element, so the parser goes into an infinite loop.
>
> Clearly, the parser can check for a recursive call to call an already opened profile, but the processing instructions should discuss this. It seems that in the case of < http://www.w3.org/1999/xhtml/vocab>, it is intended to note that this defines a profile, not requires a profile. Should processing rules be different the <head>, is the profile use in this case just wrong? In any case, it looks like an existing useage pattern that is incompatible with the processing instructions.
>
> Gregg
>
>
>   

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Shane P. McCarron                          Phone: +1 763 786-8160 x120
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Received on Sunday, 2 May 2010 21:12:12 UTC