[Fontconfig] FontConfig iso15924 tag for autoinstallation via PackageKit

[Akira TAGOH]

I have a rough idea to support the script based selection in
fontconfig though, there are some issues we may need to address before
that. most obvious one is, the mapping from the script to fonts isn't
necessarily unique.that may eventually depends on the language or
needing another map to determine the script tag at the end as you
told. easier way may be to leave it to applications and expect to see
the language and the script tags together in the query perhaps. no ETA
for that however.

On Wed, Apr 30, 2014 at 4:45 PM, Frédéric WANG <fred.wang at free.fr> wrote:
> Dear FontConfig & PackageKit developers,
>
> I've recently worked on automatic font installation in Gecko-based
> applications using PackageKit [1]. The current patch to add notifications
> for missing glyphs in Gecko relies on script tags as defined in iso15924 [2]
> [3]. So it would help if fontconfig & PackageKit would be able to handle
> some metadata for these script tags, for example :script=Khmr (at the moment
> I think only the :lang tag is supported). Also, I'm interested in automatic
> installation of math fonts, so it would be important to support the code
> "Zmth=Mathematical notation" too. This script does not correspond to any
> Unicode script, but you can find some relevant ranges in
> http://www.w3.org/TR/xml-entity-names/#blocks (especially the Mathematical
> Alphanumeric Symbols are important and are required for [4])
>
> Thanks,
>
> [1] https://bugzilla.mozilla.org/show_bug.cgi?id=467729
> [2] http://www.unicode.org/iso15924/iso15924-codes.html
> [3] https://bugzilla.mozilla.org/show_bug.cgi?id=619521
> [4] https://bugzilla.mozilla.org/show_bug.cgi?id=930504
>
> --
> Frédéric Wang
> MathML Crowdfunding: ulule.com/mathematics-ebooks
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-- 
Akira TAGOH