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(unknown charset) [Bjoern Hoehrmann] Re: IRIEverywhere-27

From: (unknown charset) Henry S. Thompson <ht@inf.ed.ac.uk>
Date: Tue, 24 Jan 2006 15:35:04 +0000
To: (unknown charset) (unknown charset) François Yergeau <francois@yergeau.com>
Cc: (unknown charset) public-xml-core-wg <public-xml-core-wg@w3.org>
Message-ID: <f5bu0btabbr.fsf@erasmus.inf.ed.ac.uk>
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>Could someone convince me that we _shouldn't_ do what Bjoern suggests
>here, i.e. include an appeal to Unicode Normalization [C] in the new
>universal IRI->URI algorithm?
>Doing so will remove a potential serious roadblock for XLink 1.1.
>I'm far from being an expert on this area, but to my naive eyes his
>argument (which is a reply to my claim that Character Encoding rules
>don't apply to IRI->URI mapping for XML specs, because they all start
>From=20infoset values, which are defined as sequences of Unicode code
>points) seems valid.
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>From: Bjoern Hoehrmann <derhoermi@gmx.net>
>To: ht@inf.ed.ac.uk (Henry S. Thompson)
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>Date: Tue, 13 Dec 2005 19:10:03 +0100
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>* Henry S. Thompson wrote:
>>Precisely.  IRI-to-URI processing for XML is only coherently
>>understood as a process that is defined in the terms provided by the
>>Infoset spec., where _all_ values are sequences of Unicode code
>Well, then you have this step,
>  If the IRI is written on paper, read aloud, or otherwise represented
>  as a sequence of characters independent of any character encoding,
>  represent the IRI as a sequence of characters from the UCS normalized
>  according to Normalization Form C (NFC, [UTR15]).
>I.e., you always normalize. Could you elaborate on why e.g. the XML Core
>Working Group did not adopt this step in the various specifications that
>define string-to-URI conversion (XML 1.0, XML 1.1, XInclude, XLink, ..)?
>The normalization step has been in the various IRI drafts for more than
>7 years now and
>  The XML Core WG would also like TAG input on the wisdom of early
>  adoption given the "Internet Draft" status of the IRI draft [10]. So
>  far adoption has relied on "copy and paste", but there is potential
>  for these definitions to get out of sync.
>out of sync specifications were a concern when the issue was raised.
>Bj=F6rn H=F6hrmann =B7 mailto:bjoern@hoehrmann.de =B7 http://bjoern.hoehrma=
>Weinh. Str. 22 =B7 Telefon: +49(0)621/4309674 =B7 http://www.bjoernsworld.de
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> Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
>                     Half-time member of W3C Team
>    2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
>            Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk
>                   URL: http://www.ltg.ed.ac.uk/~ht/
>[mail really from me _always_ has this .sig -- mail without it is forged sp=
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Received on Tuesday, 24 January 2006 15:35:10 UTC

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