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RE: XML and mainframes, yet again (was RE: So me com

• To: "'Champion, Mike'" <Mike.Champion@S...>, "'xml-dev@l...'" <xml-dev@l...>
• Subject: RE: XML and mainframes, yet again (was RE: So me comments on the 1.1 draft)
• From: Nicolas LEHUEN <nicolas.lehuen@u...>
• Date: Mon, 17 Dec 2001 11:52:04 +0100

>> It is unnatural to allow #85 as white space in XML as 
>(currently at least)
>it 
>> isn't as far as I know an end of line character in any 
>ascii/unicode based
>system.
>> So it is completely unlike the situation with #10 and #13.
>
>Ummm, the Unicode consortium has supplied an entire technical report
>http://www.unicode.org/unicode/reports/tr13/ on this 
>fascinating subject.
>The first sentence  says "Newlines are represented on 
>different platforms by
>carriage return (CR), line feed (LF), CRLF, or next line (NEL)."  That
>implies to me that #85 is completely IDENTICAL to the 
>situation with #10 and
>#13 in Unicode.   

Pardon my naive question, but how comes that Unicode, which can handle
different character representations depending on the encoding used, does not
have a SINGLE newline codepoint that would map onto 0x0D0A (CRLF) on some
platform, 0x0D (CR) or 0x0A (LF) on others, 0x85 (NEL) on mainframes, etc. ?

If such a  characted existed, the XML spec could just mention it as a
possible whitespace, letting the parser handle the various end-of-line
markers based on the 'encoding' parameter in the <?xml header... A bit like
the <?xml encoding="ascii-with-nel" proposed by David.

The character encoding would therefore give the parser a hint of the
end-of-line encoding of the Unicode newline codepoint used in the document.
But it's a fantasy since the concept of character encoding does not includes
"end-of-line" encoding, does it ?

Regards,
Nicolas Lehuen
Responsable R&D / Head of R&D
UBICCO, the Multi-Access Software Vendor
http://www.ubicco.com/
mailto:nicolas.lehuen@u...
Phone : +33 155 040 321
Fax   : +33 155 040 304
Mobile: +33 661 907 640

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