On Tue, Jun 4, 2019 at 8:01 PM Eli Zaretskii <[email protected]> wrote: > > From: Behdad Esfahbod <[email protected]> > > Date: Tue, 4 Jun 2019 12:05:00 -0700 > > Cc: "[email protected]" <[email protected]> > > > > We assume fonts support shaping. Ie. we don't have a way to check for > font suitability for correct shaping. > > I understand, thanks. I wasn't asking how to do that with HarfBuzz, I > was asking what font features should my font matching function examine > to make sure the font will "support shaping" in the HarfBuzz sense. > Features that can be tested without actually shaping some text, of > course, i.e. without actually opening the font and using it. >
And I was talking generally. There's nothing you can check in fonts that wouldn't leave some valid use-case out. In other words, I don't know of a legitimate way to filter out broken fonts like code2000. If that's what you are asking for. Let me ask it differently: why do you think you need to filter anything out? -- behdad http://behdad.org/
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