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Re: Unicode Normalization

From: Anne van Kesteren <annevk@opera.com>
Date: Wed, 04 Feb 2009 18:01:40 +0100
To: "Robert J Burns" <rob@robburns.com>, "Aryeh Gregor" <Simetrical+w3c@gmail.com>
Cc: public-i18n-core@w3.org, jonathan@jfkew.plus.com, "W3C Style List" <www-style@w3.org>
Message-ID: <op.uot6w2o964w2qv@annevk-t60.oslo.opera.com>

On Tue, 03 Feb 2009 19:38:32 +0100, Robert J Burns <rob@robburns.com>  
> Anne wrote:
>> (As far as I can tell XML is Unicode
>> Normalization agnostic. It merely recommends authors to do a certain
>> thing. We can certainly recommend authors to do a certain thing in HTML
>> and CSS too...)
> XML is not Unicode agnostic.

I did not say that.

> Unicode is a normative reference in terms of text handling. So an XML UA  
> is by definition also a Unicode UA. That means that an implementation  
> needs to have some reason for comparing two byte-wise unequal  though  
> canonically equivalent strings and determining they do not match. I  
> haven't heard anyone here say why an XML processor needs to support (and  
> therefore promote) such errors.

The XML grammar is expressed in Unicode codepoints so comparison also  
happens on that level.

Anne van Kesteren
Received on Wednesday, 4 February 2009 17:02:35 UTC

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