Re: Non-SGML Char Refs

From: Martin Duerst (duerst@w3.org)
Date: Sun, Jul 15 2001

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    Message-Id: <4.2.0.58.J.20010716094402.03ef0aa0@sh.w3.mag.keio.ac.jp>
Date: Mon, 16 Jul 2001 09:45:37 +0900
To: Bjoern Hoehrmann <derhoermi@gmx.net>
From: Martin Duerst <duerst@w3.org>
Cc: tkinias@optimalco.com, "'www-validator@w3.org'" <www-validator@w3.org>, www-html@w3.org
Subject: Re: Non-SGML Char Refs

The state as discribed by Bjoern is what I understand, too.
There is a proposal to use the HTML restrictions even for
XHTML, because using something like &#128; and thinking that
it stands for the Euro is a very frequent error.

Regards,   Martin.

At 01:07 01/07/16 +0200, Bjoern Hoehrmann wrote:
>* Martin Duerst wrote:
> >At 04:32 01/06/05 +0200, Bjoern Hoehrmann wrote:
> >>* Thanasis Kinias wrote:
> >> >The validator complains about "non-SGML character" references (e.g., 
> &#147;
> >> >instead of the correct &#8220;) only when validating as XHTML.  That 
> implies
> >> >that &#147; and the other Microsoft characters from decimal 128-159 (hex
> >> >80-9f) _are_ valid in HTML.
> >>
> >>They are, they just refer to non-printing control characters.
>
>The other way round, valid XML, invalid HTML.
>
> >  CHARSET
> >           BASESET  "ISO Registration Number 177//CHARSET
> >                     ISO/IEC 10646-1:1993 UCS-4 with
> >                     implementation level 3//ESC 2/5 2/15 4/6"
> >          DESCSET 0       9       UNUSED
> >                  9       2       9
> >                  11      2       UNUSED
> >                  13      1       13
> >                  14      18      UNUSED
> >                  32      95      32
> >                  127     1       UNUSED
> >                  128     32      UNUSED
> >                  160     55136   160
> >                  55296   2048    UNUSED  -- SURROGATES --
> >                  57344   1056768 57344
>
> >Actually, these code positions are valid (though rather useless)
> >in XML, but they are invalid in HTML. So I'm not sure what the
> >result is for XHTML.
>
>x'posted to www-html@w3.org. Are the as unused declared characters from
>HTML 4.0 valid in XHTML 1.0?
>--
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