- From: Martin Bryan <mtbryan@sgml.u-net.com>
- Date: Tue, 01 Apr 1997 18:41:11 +0100
- To: W3C SGML Working Group <w3c-sgml-wg@w3.org>
Is there any real need for XML public ids to be SGML public ids? I know I'm risking being heretical here, but it occurs to me that there can be no strictly logical reason why XML public IDs should not conform to the character set restrictions of URNs (as extended in the Mainz Unicode/HTML Internationalization proposals) rather than those of SGML. Any SGML public identifier would form a valid entry according to the URN rules. It is likely that SGML will have to be revised to allow most 10646 characters at some stage in the future (though when is anyone's guess). People using systems which have an SGML parser in would be restricted to using the existing SGML restrictions on character sets until such time as SGML changes, but those simply using XML could take advantage of the advances in URN code set being proposed if they so wish. Don't we get the best of both worlds (Internationalized HTTP and old-fashioned file identification techniques) is we adopt both approaches rather than going for the lowest common denominator, the DOS 8/3 file naming conventions, that constrained the original pi character set? ---- Martin Bryan, The SGML Centre, Churchdown, Glos. GL3 2PU, UK Phone/Fax: +44 1452 714029 WWW home page: http://www.sgml.u-net.com/
Received on Tuesday, 1 April 1997 12:43:39 UTC