Re: Origins of oddball CJK compatibility ideographs?

From: Kevin Bracey (
Date: Tue Jan 19 1999 - 05:22:13 EST

In message <>
          "Ken Lunde" <> wrote:

> >> The characters that can be found in JIS X 0212 are given code
> >> points in the FA0E-FA2D range for round-trip compatibility, and a
> >> few characters that aren't found in the CJK area are also placed
> >> there.
> This cannot be correct. Part of the design of the first set of 20,902
> Chinese characters was to include *all* of JIS X 0208-1990 (now JIS X
> 0208:1997) and JIS X 0212-1990. Of the remaining 80 kanji, most just
> happened to be in the set of 20,902 Chinese characters (for example,
> some of them are traditional forms). So, the characters in the range
> 0xFA0E-0xFA2D are those not in JIS X 0212-1990.

Quite right - brain not in gear there. I knew there were a couple of
hundred JIS X 0212 characters, so they couldn't possibly fit in FA0E-FA2D.

What I should have said was:

The characters in FA0E to FA2D are IBM Kanji that either

   1) would be unified with JIS X 0208 Kanji under Unicode CJK unification
      rules, but are given codes in the compatibility zone to allow round-
      trip conversion to Shift-JIS
or 2) are not to be found in any of the primary Han source standards, so
      didn't get a place in the main CJK area. This means they got relegated
      to the compatibility zone.

Kevin Bracey, Senior Software Engineer
Acorn Computers Ltd                           Tel: +44 (0) 1223 725228
Acorn House, 645 Newmarket Road               Fax: +44 (0) 1223 725328
Cambridge, CB5 8PB, United Kingdom            WWW:

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