Fwd: UAX#50 conformance: Is it possible to update existing fonts without causing damage to existing non-CSS applications?

---------- Forwarded message ---------
From: fantasai <fantasai@inkedblade.net>
Date: 2019年11月25日(月) 13:53
Subject: Re: UAX#50 conformance: Is it possible to update existing fonts
without causing damage to existing non-CSS applications?
To: MURATA Makoto <eb2m-mrt@asahi-net.or.jp>, Nat McCully <
nmccully@adobe.com>
Cc: Taro Yamamoto <tyamamot@adobe.com>, Florian Rivoal <florian@rivoal.net>


On 11/25/19 5:35 AM, MURATA Makoto wrote:
>
> I have discussed with Yamamoto-san of Adobe.  He
> strongly feels that it is impossible to update
> existing fonts without causing damage to existing
> non-CSS applications.  I assume that his opinion is
> based on discussions internal to Adobe.

Can Yamamoto-san give an example of an update to an existing font that
would
cause breakage in non-CSS applications?

~fantasai



-- 
Regards,
Makoto