[MPEG-OTSPEC] DSIG spec issue

[Peter Constable]

Office has a font service, serving fonts to (recent versions of) Office apps. My understanding is that they strip DSIG tables from fonts in the service. So, I would assume that recent versions of Office shouldn’t require DSIG tables to enable features in Latin fonts, though I haven’t confirmed that.

This is all product commentary: it can inform whether DSIG may still be relevant for fonts, though of course doesn’t belong in the spec itself.


Peter

From: Bobby de Vos <bobby_devos at sil.org>
Sent: Wednesday, August 26, 2020 6:01 AM
To: Peter Constable <pgcon6 at msn.com>; Dave Crossland <dcrossland at google.com>; mpeg-otspec <mpeg-otspec at lists.aau.at>
Subject: Re: [MPEG-OTSPEC] DSIG spec issue


In addition to triggering the OpenType icon, a DSIG was (is?) needed in older versions of Microsoft Word to process some OpenType features in Latin script fonts.

https://github.com/googlefonts/fontbakery/issues/1845#issuecomment-564383952<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fgooglefonts%2Ffontbakery%2Fissues%2F1845%23issuecomment-564383952&data=02%7C01%7C%7C7bfd4c9ff7ed4adb89b908d849c023d7%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637340436865051836&sdata=gbhH2vUt%2BW0MzgINOULwqeXpxjn8W7Xi5UWk8h7vF0o%3D&reserved=0>

As recently as Office 2013 this was the case, and Office 2013 has not reached end of life yet.
On 2020-08-25 8:01 p.m., Peter Constable wrote:
I think at one time, yes, but I don’t think that’s been relevant since Windows 7.


Peter

From: mpeg-otspec <mpeg-otspec-bounces at lists.aau.at><mailto:mpeg-otspec-bounces at lists.aau.at> On Behalf Of Dave Crossland
Sent: Tuesday, August 25, 2020 6:09 PM
To: mpeg-otspec <mpeg-otspec at lists.aau.at><mailto:mpeg-otspec at lists.aau.at>
Subject: Re: [MPEG-OTSPEC] DSIG spec issue

Wasn't there something about needing a DSIG table to trigger the OpenType icon in Windows Explorer?

--
Bobby de Vos
bobby_devos at sil.org<mailto:bobby_devos at sil.org>
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