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Re: SPARQL and Unicode versions

From: Dan Connolly <connolly@w3.org>
Date: Sat, 07 Jan 2006 20:58:53 -0600
To: Dave Beckett <dave@dajobe.org>
Cc: public-rdf-dawg-comments@w3.org
Message-Id: <1136689134.20839.574.camel@dirk.w3.org>

On Sat, 2006-01-07 at 12:38 -0800, Dave Beckett wrote:
> SPARQL refers to:
> [[
>     The Unicode Standard, Version 4. ISBN 0-321-18578-1, as updated from
>   time to time by the publication of new versions. The latest version of
>   Unicode and additional information on versions of the standard and of
>   the Unicode Character Database is available at
>   http://www.unicode.org/unicode/standard/versions/.
> ]]
> which cites a moving target.  Please define SPARQL in terms of a
> particular version of Unicode only, and no other.  Otherwise if or when
> this Unicode consortium makes some incompatible changes, all existing
> implementations become invalid.

How so? How is conformance to SPARQL sensitive to changes in Unicode?

> EricP said it was because of http://www.w3.org/TR/charmod/#sec-RefUnicode
> which seems to go counter to stable implementations.
> Maybe you can alter the wording so that implementing Unicode 4 alone is
> sufficient and using any later versions is not required.
> The charmod refernence mostly says this in that the latter is a MAY and
> the former is needed "if it is desired that characters allocated after a
> specification is published are usable with that specification".  Which
> may not be a desire.
> Dave
Dan Connolly, W3C http://www.w3.org/People/Connolly/
D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E
Received on Sunday, 8 January 2006 02:58:58 UTC

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