[Bug 5948] Reference to Unicode Database

http://www.w3.org/Bugs/Public/show_bug.cgi?id=5948





--- Comment #7 from Felix Sasaki <fsasaki@w3.org>  2008-11-13 02:10:28 ---
(In reply to comment #6)
> I don't see anything in that Unicode stability policy about names of blocks
> such as "Greek", which is my biggest concern here. Did I miss something? Also,
> a policy for the future doesn't solve the problem for the past - I do think we
> need to say something explicit to make sure that a schema using <pattern
> value="p{IsGreek}*"/> continues to work.
> 

>From a mail exchange with Mark Davis on the topic:

[Soon] "there will be a publicly available stability provision for all of the
property aliases and property value aliases on

    * http://unicode.org/Public/UNIDATA/PropertyValueAliases.txt
    * http://unicode.org/Public/UNIDATA/PropertyAliases.txt 

with the exception of Contributory properties listed on
<http://www.unicode.org/Public/UNIDATA/UCD.html#Properties>. This is not
completely final yet, since the exact wording has to be formulated by the
editorial committee, and it actually requires approval by the officers, but I
don't anticipate any problems.

So that will include block names. Note that that the set of characters having a
given property or property value may change (subject to the stability
policies). What the above means is that the identifiers will always remain
valid, so \p{script=Greek} or equivalent syntax will remain valid. That should
address your concerns.

Mark"


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