[Fontconfig] Variable fonts redux

[Lawrence D'Oliveiro]

On Sun, 17 Sep 2017 02:42:13 -0400, Jerry Casiano wrote:

> Also, does this mean that a font such as Voto Serif GX will list 500
> different variations in a font selector dialog?

Variations are continuous along one or more axes. So you show something
like a slider for each axis, and let the user choose the variation
value. Typically you get no more than 2-3 axes per font.