Why doesn't Ideographic (ID) in UAX#14 have half-width katakana?

From: Makoto Kato <m_kato_at_ga2.so-net.ne.jp>
Date: Tue, 28 Apr 2015 11:20:29 +0900


http://www.unicode.org/reports/tr14/proposed.html#ID defines Ideographic
(ID). Although full-width katakana is included in ID, half-width
katakana (U+FF66 and U+FF71-U+FF9D) isn't. Why?

Also, Conditional Japanese Starter (CJ,
http://www.unicode.org/reports/tr14/proposed.html#CJ) considers
half-width variants such as half-width katakana letter small a.

-- Makoto
Received on Mon Apr 27 2015 - 21:35:04 CDT

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