Hello TAG!

I'm requesting a TAG review of:

• Name: OpenType Variable Fonts Additions to CSS Fonts Module, Level 4, specifically "font-variation-settings", the range property extensions to the font-style, font-stretch and font-weight additions to the @font-face descriptor, as well as the updated font-matching algorithm, section 5.2
• Specification URL: https://drafts.csswg.org/css-fonts-4/
• Explainer, Requirements Doc, or Example code: https://medium.com/@tiro/https-medium-com-tiro-introducing-opentype-variable-fonts-12ba6cd2369
• Primary contacts: @drott

You should also know that...

The edits for font-variation-settings are analogous to font-feature-setings, and the range definitions as part of @font-faces are somewhat natural extensions over the CSS Fonts Level 3 specification. Similarly, the font matching algorithm extends the discrete algorithm of level 3 to supporting ranges for OpenType variable fonts. The OpenType variable fonts have been introduced as a joint industry effort by Apple, Microsoft, Adobe and Google.

We'd prefer the TAG provide feedback as:

• open a single issue in our Github repo for the entire review