[HarfBuzz] Choosing "dev2" vs "deva" OT script for shaping

[Adam Twardoch (List)]

Yes, separate x-prefixes for script and land would be good! (That'd allow for 3-letter script tags).

Sent from my mobile phone.

> On 07.05.2015, at 04:28, Martin Hosken <mhosken at gmail.com> wrote:
> 
> Dear Behdad,
> 
>> I can extend the BCP 47 extension to also choose the script system if it's
>> available.  Eg, a language setting of "x-hbotdeva" will choose "deva" whereas
>> "x-hbotdev2" will choose "dev2".  This works for script tags that have four
>> letters (ie, not 'lao ', 'yi  ', 'nko ', and 'vai ').
>> 
>> We would only recognize the three-letter ones as language system tag.
>> 
>> This will be useful for choosing 'math' script as well.
> 
> +1
> 
> Or you could use x-hbscdev2 (as in script) to separate the namespaces.
> 
> Yours,
> Martin
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