font-variant-*

[svgeesus]

Stats on which font-variant-* longhands such as font-variant-numeric or font-variant-east-asian are being used.

Also whether the font-variant shorthand is being used with the none value, to reset all the longhands.

[Crissov]

Comparative stat for font-feature-settings?

[svgeesus]

Comparative stat for font-feature-settings?

Indeed, that would be very useful, particularly where one could use either approach. IIRC font-feature-settings was deployed in browsers first, so some usage may simply reflect "that was the only thing that worked at the time".

CSS Fonts 4 has the data to map feature codes to variant values.

[svgeesus]

Correspondences between high-level font-* properties and low-level font-feature-settings features

font-kerning

• kern
• vkrn

font-variant-ligatures

• liga
• clig
• dlig
• hlig
• calt

font-variant-position

Perhaps check if stylesheet authors try to nest this (it doesn't work)

• subs
• sups

font-variant-caps

Also depends on value of font-feature-settings

• smcp
• c2sc
• pcap
• c2pc
• unic
• titl

font-variant-numeric

• lnum
• onum
• pnum
• tnum
• frac
• afrc
• ordn
• zero

font-variant-alternates

This one was dropped from CSS Fonts 3 due to lack of implementer support. This is an area where the Open Web Platform lags behind native, which has good alternates support.

• hist
• salt
• ssxx where xx is 00 to 20
• cvxx where xx is 00 to 99
• swsh
• cswh
• ornm
• nalt

font-variant-east-asian

• jp78
• jp83
• jp90
• jp04
• smpl
• trad
• fwid
• pwid
• ruby

[LeaVerou]

Alright, so this again seems pretty straightforward:

1. We measure usage of the various font-variant properties, including usage in the font-variant shorthand and the font shorthand. We should probably keep the counts separate, to see if the shorthands are used at all (or we can just do that in Shorthand vs longhand stats #10 and not care about it here)
2. We measure usage of the various low-level settings @svgeesus posted about by measuring incidence of the code in quotes in font-feature-settings (single or double quotes).

[LeaVerou]

After consulting with @rviscomi, it appears the overlap with the Fonts chapter is too significant, so we will not have a Fonts section. Therefore, I'm closing this.