- From: Philip Taylor <pjt47@cam.ac.uk>
- Date: Sun, 01 Mar 2009 18:28:59 +0000
- To: Ben Adida <ben@adida.net>
- CC: HTMLWG WG <public-html@w3.org>, RDFa mailing list <public-rdf-in-xhtml-tf@w3.org>, public-xhtml2@w3.org, "www-tag@w3.org WG" <www-tag@w3.org>
Ben Adida wrote: > Henri Sivonen wrote: >> I suggest changing RDFa to use full IRIs instead of CURIEs. > > I appreciate you putting a concrete proposal on the table. > > I believe it is rather arbitrary and in conflict with existing uses in > HTML4. First, the use of IRIs in @rel is *quite* new, I know of no major > (or even minor) vocabulary that's deployed this way. http://philip.html5.org/data/link-rel-rev.txt has a few @rel values starting with "http://". One is: <link rel="http://schemas.google.com/g/2005#feed" ...> seemingly defined in http://code.google.com/apis/gdata/docs/2.0/reference.html , though that's Atom and not HTML. The other cases all look like people got confused by the difference between @rel and @href. So it does seem reasonable to say that intentional use of IRIs in @rel is unusual. (The use of prefix-colon values also seems very rare. By far the most common is to just make up a string ("nofollow", "apple-touch-icon", "dropmenu1", "SQDynButton", etc).) > And finally, microformats suggest using @profile to interpret their > @rel's and @class's. http://philip.html5.org/data/profile-values.txt indicates that pretty much nobody (from a roughly random selection of pages across the web) uses @profile, except for the one value that's in the default Wordpress template. About 130 of the pages use class="vcard" but only 4 seem to indicate it in @profile. So the Microformats suggestion to use @profile appears to be largely irrelevant in practice. -- Philip Taylor pjt47@cam.ac.uk
Received on Sunday, 1 March 2009 18:29:36 UTC