- From: <bugzilla@wiggum.w3.org>
- Date: Fri, 05 Sep 2008 14:36:35 +0000
- To: www-xml-schema-comments@w3.org
http://www.w3.org/Bugs/Public/show_bug.cgi?id=5948
Michael Kay <mike@saxonica.com> changed:
What |Removed |Added
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CC| |mike@saxonica.com
--- Comment #1 from Michael Kay <mike@saxonica.com> 2008-09-05 14:36:34 ---
I would be more inclined to agree with this if the Unicode Database offered
better guarantees of backwards compatibility. But recent releases have, for
example, renamed one of the character groups from "Greek" to "Greek and
Coptic", and an implementation that followed that blindly would cause any
schema using the regular expression \P{IsGreek} to become invalid overnight.
Similarly there are characters that have changed category, which also changes
the semantics of regular expressions, causing a message that is validated by
the sender to be rejected by the recipient even though both use the same
schema.
I think we need to offer XML Schema users better stability than this.
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Received on Friday, 5 September 2008 14:37:10 UTC