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Re: XML and mainframes, yet again

• To: David Brownell <david-b@p...>
• Subject: Re: XML and mainframes, yet again
• From: John Cowan <jcowan@r...>
• Date: Mon, 17 Dec 2001 15:02:53 -0500
• Cc: xml-dev@l...
• References: <E16Fnmt-00087M-00@m...> <06d201c18731$38c0ef00$6800000a@b...>
• User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.6) Gecko/20011120

David Brownell wrote:


> Not if you go by what most systems do with those codes; what I've
> seen in practice is that those codes will map to U+0080..U+009F.


In fact, no.  Most systems are Windows systems, and map byte 80
to U+20A0, and so on.


> Some ISO-8859-1 spec addendum would be interesting, since
> that's where those were defined (prior to importing to Unicode).


8859-x no more defines the control characters than Unicode does.
The relevant spec is ISO 6429:1992, ISO-IR-77.  You can see a slightly
older version of this at
http://www.itscj.ipsj.or.jp/ISO-IR/077.pdf

In principle, one of the other half-dozen ISO-IR C1 control character
sets might be in use in Unicode plain text, but they are all even more
special-purpose than 6429.


> The rule of thumb being that one adds a high order zero byte to
> the ISO-8859-1 code points ("bytes") and gets Unicode.


True as far as it goes, but that does not mean that U+0080 through
U+009F are in ISO-8859-1.

-- 
Not to perambulate             || John Cowan <jcowan@r...>
    the corridors               || http://www.reutershealth.com
during the hours of repose     || http://www.ccil.org/~cowan
    in the boots of ascension.  \\ Sign in Austrian ski-resort hotel

• References:
  • Re: XML and mainframes, yet again
    • From: John Cowan <cowan@m...>
  • Re: XML and mainframes, yet again
    • From: David Brownell <david-b@p...>

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