[Webkit-unassigned] [Bug 247987] Regression: "font-optical-sizing: auto" has no effect in Safari 16 on macOS Ventura & iOS 16

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=247987

--- Comment #13 from Stephen Nixon <stephen at arrowtype.com> ---
Thanks so much for taking time to think this through and for sharing your thoughts, Myles! Excited you’ll be trying to work on this soon.

> Instead, we should be explicit and say "if CSS tells us to apply optical sizing, let's explicitly make sure optical sizing is enabled in Core Text"

As I interpret the CSS spec, optical-size:auto is the specified default, correct? So, it seems like a deviation to require a user to explicitly specify that before you apply that logic... but I could be misinterpreting your meaning.

One other nitpick: OT 1.9 variable fonts use *1-1000* for weight, not just 100–900. This probably doesn’t need to be said, but I’ve seen various bugs where things worked strangely in that newer area of the weight axis.

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