Re: Encoding Personal Use Ideographs (was Re: Level of Unicode support required for various languages)

[email protected]
Newsgroups gmane.text.unicode.devel
Message-ID <[email protected]>
Quoting James Kass <[email protected]>:

>
> Andrew West wrote,
>
>> If you were going to ask me what the "best" way to represent kanji
>> ligatures such as <U+2FF5 U+9580 U+9F8D> would be under an ideal
>> Unicode model, I would say as <U+9580 U+200D U+9F8D>, using ZWJ to
>> indicate the ligation, and smart fonts would ligate the two components
>> into a single glyph if they could. ...
>
> Your suggestion to use ZWJ turns out to actually be working in the
> real world.  I've successfully tested a font which makes a substitution
> for <U+9580 U+200D U+9F8D>.  A glyph from the PUA appears in the
> display instead of the string.
>

Yes. Though this is proably a better way to describe characters like

U+9584 &#38276;  <U+9580 U+200D U+4EBA>

and

U+21B89 &#138121; <U+9580 U+200D U+5C0F>

In fact it might be possible to map to a glyph in the font that does  
not actually have a unicode point atall, not even a PUA one.


> Trying the same kind of set-up with the ideographic description
> character, however, does not work here.  Unfortunately.
>

I am sure that there should be a way to map the IDS to a PUA glyph

> Should the use of ZWJ in running CJK text to promote the formation
> of "ligatures" for the purpose of representing such personal characters
> be encouraged or discouraged?  Do the Unicode mavens have any strong
> objections to such a practice?
>
> Best regards,
>
> James Kass



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