Hi all,
I've recently been using Ideographic Description Sequences to describe
some Han characters that are not in Unicode 3.1, and I noticed that
U+3007 is not included in the set of "UnifiedIdeographs", despite having
the "ideographic" property (TUS3.0, p. 269; UAX #27, section 10.1). I
understand that compatibility ideographs are not allowed to participate
in IDS, but U+3007 doesn't have a clone, as far as I know.
There are some characters in LENG Yulong and WEI Yixin's _Zhonghua Zihai_
dictionary (Beijing: Zhonghua, 1994), such as gu2 on p. 31 and lin2 on p.
32 that incorporate a circular component. I'd probably describe them as:
gu2, p. 31:
U+2FFB IDEOGRAPHIC DESCRIPTION CHARACTER OVERLAID
U+5341 (shi 'ten')
U+3007 (ling 'zero')
lin2, p. 32:
U+2FFB IDEOGRAPHIC DESCRIPTION CHARACTER OVERLAID
U+2FFB IDEOGRAPHIC DESCRIPTION CHARACTER OVERLAID
U+5341 (shi 'ten')
U+3007 (ling 'zero')
U+3405 ("x"-like shape)
(Both look somewhat like crosshairs.)
However, those aren't valid sequences. I realize the above two characters
are rather odd, but the likes of U+3AB3 and U+3AC8 would have faced the
same problem, since they also incorporate a circular component.
What would be the advisable way to handle these cases, besides
creating invalid IDS sequences, using the PUA, or giving a prose
description?
Thomas Chan
tc31@cornell.edu
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