Is the binaryness/textness of a data format a property?

Markus Scherer via Unicode unicode at unicode.org
Sun Mar 22 13:56:52 CDT 2020


On Sat, Mar 21, 2020 at 12:35 PM Doug Ewell via Unicode <unicode at unicode.org>
wrote:

> I thought the whole premise of GB18030 was that it was Unicode mapped into
> a GB2312 framework. What characters exist in GB18030 that don't exist in
> Unicode, and have they been proposed for Unicode yet, and why was none of
> the PUA space considered appropriate for that in the meantime?
>

My memory of GB18030 is that its code space has 1.6M code points, of which
1.1M are a permutation of Unicode. For the rest you would have to go beyond
the Unicode code space for 1:1 round-trip mappings.

Just please don't call it UTF-8.

markus
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