OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help



   Re: [xml-dev] Quick Review of XML 1.1 Candidate Recommendation

[ Lists Home | Date Index | Thread Index ]

At 2002-10-16 17:37 -0400, John Cowan wrote:
>Tim Bray scripsit:
> > In the general case where you want to wrap up weird bits of binary
> > gibberish to control hardware, why don't you just base64 it and not have
> > to worry about which of them are magic C0 Controls and which aren't...
>Well, that's a question.  Are the terminal control sequences characters or
>octets?  On the face of X3.64 (I forget the ISO number), they are octets,
>but people think of "move up" as ESC [ A, not 1/11 5/11 4/1 (in the
>poor-mans-hex used by the standard).

Are you thinking of ISO-2022?  Using escape sequences to fill G0 through G3 
with 94, 96, 94*94 and 96*96, and then escape or shifting sequences to 
single shift or lock shift G0 through G3 into GL and GR?

When I think of those escape sequences I think of representations of 
characters from different character sets being loaded into each of G0 
through G3, which means to me it is a character encoding issue addressed in 
the XML declaration.  Processing applications would see the Unicode 
characters after a character decoder figured out from the registered escape 
sequences the character sets and corresponding characters in the stream.

I don't think anything need be "solved" at the character level of XML ... 
ISO-2022 controls to me are just that ... controls ... not characters.

................. Ken

p.s. Anyone else out there work with NAPLPS X3.110(ANSI)/T500(CSA) that was 
based on ISO-2022?

G. Ken Holman               mailto:gkholman@CraneSoftwrights.com
Crane Softwrights Ltd.        http://www.CraneSoftwrights.com/x/
Box 266, Kars, Ontario CANADA K0A-2E0  +1(613)489-0999 (F:-0995)
ISBN 0-13-065196-6                     Definitive XSLT and XPath
ISBN 0-13-140374-5                             Definitive XSL-FO
ISBN 1-894049-08-X Practical Transformation Using XSLT and XPath
ISBN 1-894049-10-1             Practical Formatting Using XSL-FO
Next public training:          2002-12-08,2003-02-03,06,03-03,06


News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS