From: Uriah Eisenstein (email@example.com)
Date: Tue Jun 29 2010 - 09:25:20 CDT
To clarify my question with an example :) The character 亀 (U+4E80) is listed
in Unihan as a Z-variant of 龜 (U+9F9C). However, the opposite is not true.
Similarly, 疍 (U+758D) is listed as a semantic variant of 蛋 (U+86CB), but not
vice versa. From the definitions of these variant types in UAX#38, one would
naturally expect them to be symmetrical, and both characters to show each
other as variants. There are quite a few other such cases, although it does
appear that in most cases the relation is symmetrical.
My reason for asking, BTW, is that I'm thinking of grouping characters which
are Z-variants of each other in some application, so I need to understand
whether Z-variants are expected to have clear "cliques" in which each
character is a Z-variant of all others.
I realize that the semantic variant relation, at least, is based on external
sources and not determined by Unicode; regarding Z-variants I'm not clear.
I'd like to know though whether the relation is expected to be symmetrical,
and the above cases are to be considered errors; or there is some meaning to
a one-directional relation; or something else.
On a side note, some Z-variants I've looked at seem to have very different
abstract shapes, in some cases looking more like simplified/traditional
pairs. As I said I don't know clearly how they are determined. Are they
supposed to be exactly those pairs which would be unified if it were not for
the Source Separation Rule?
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