[MPEG-OTSPEC] [EXTERNAL] Proposal to deprecate derived search values

[Peter Constable]

Sounds good to me.

-----Original Message-----
From: mpeg-otspec <mpeg-otspec-bounces at lists.aau.at> On Behalf Of Simon Cozens
Sent: Sunday, August 30, 2020 11:05 PM
To: Renzhi Li <Renzhi.Li at microsoft.com>; mpeg-otspec at lists.aau.at
Subject: Re: [MPEG-OTSPEC] [EXTERNAL] Proposal to deprecate derived search values

On 30/08/2020 23:27, Renzhi Li wrote:
> A good recommendation should be that, a font /reader/ should ignore 
> these fields, and a font /writer/ should always provide proper values 
> in case this font is put into legacy systems.

I think this is what I am suggesting:

> I propose that these fields be deprecated for font consumers in the 
> next OFF version, with a path to becoming marked "unused" for both 
> font consumers and font producers in a specified future version.

(CommonType uses "font consumers" and "font producers" for this distinction, which I think is an important distinction we need to make when deprecating or discouraging portions of the spec.) _______________________________________________
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