From: Kenneth Whistler (email@example.com)
Date: Thu Nov 19 2009 - 20:09:57 CST
Jason Dusek asked:
> Is it correct to derive an "actually allocated" predicate from
> the file `Scripts.txt` by essentially saying "This char has a
> script in this version of Unicode so it's allocated."?
For all values except Script=Unknown, yes. (Although with
the caveat that by "allocated" here, you presumably mean
"Unknown" is the default value of the Script property, and
all unassigned code points get that value by default.
Any other value of the Script property is only ever applied
to an actually assigned character.
"Allocations" in the Unicode Roadmap, on the other hand, are
only guidelines to help structure discussion of proposals
for future encoding. Although ISO 15924 script codes may
already exist for some such scripts, before they are
actually encoded in the Unicode Standard (and ISO/IEC 10646),
none of those characters are actually assigned until they
are published as part of a new version of the standards,
and none of the code points within such allocation ranges
gets any Script property value other than "Unknown" until
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