On Wed, Sep 24, 2008 at 5:52 PM, Phillips, Addison <addison@amazon.com> wrote:
 

Dear UTC,

(I have copied Mark as our liaison.)

I'm writing on behalf of the W3C Internationalization Core working group. During a recent teleconference [1], we discussed XML Schema 1.1. Schema implements regular expressions that include features based on UTS#18 (Regular Expressions).

One of these features is the ability to specify a Unicode block by name. The schema working group is concerned that Unicode block names are not guaranteed to be stable and thus would like to include a specific version of Unicode as a normative reference. Our working group would prefer that they recognize future versions of Unicode so that new Unicode block names can be adopted as new blocks are assigned. In particular, the schema WG is concerned by the change of name from "Greek" to "Greek and Coptic" of the 0370..03FF block.

Since Unicode regular expressions are now becoming widely implemented and this feature in particular relies on block name stability, we would like to request that Unicode and the UTC please comment on this issue, and, further would request that you make block names a stable property of Unicode.

Kind Regards,

Addison (on behalf of W3C I18N Core)

[1] http://www.w3.org/2008/09/17-core-minutes.html#action02

Addison Phillips
Globalization Architect -- Lab126

Internationalization is not a feature.
It is an architecture.