Private Use areas

Philippe Verdy via Unicode unicode at unicode.org
Thu Aug 23 11:46:50 CDT 2018


Le jeu. 23 août 2018 à 18:31, Richard Wordingham via Unicode <
unicode at unicode.org> a écrit :

> On Thu, 23 Aug 2018 17:39:15 +0200
> Philippe Verdy via Unicode <unicode at unicode.org> wrote:
>
> > You make a confusion: I do not propose "hacking" existing codes, but
> > instead adding new codes for private variations. It's then up to PUV
> > sequence authors to choose an appropropriate base character that can
> > have the properties they want to be inherited by the private-use
> > variation sequence, or to choose a base character that will provide
> > some reasonnable reading if rendererd as is (by renderers or fonts
> > not implementing the pricate viaration sequence, give nthat they will
> > also append a symbol for the PUV itself after the standard character).
>
> Variation sequences cannot be used to add new characters.


Did you remember I did not speak about existing variation sequences ? Only
about the new encocing do provite use variation sequences which do not have
to obey the policy of exising VS, and whose purpose whould be to inherit
most properties (notably direction, breaking, spacing, general category of
another existing character).



> Most PUA
> characters are used to represent new characters.


I did not speak as well about PUAs.
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