Handle Variable Fonts
This may be obvious, but just in case unique design challenges spring up related to VF support, I thought it would be useful to track progress.
VF font binaries on the system will get automatically picked up through Fontconfig. Two potential differences (at least) exist at the font-manager level between a VF and an equivalent static-font:
- The user would probably want to know that N named instances shown in the font list actually come from a single VF binary, so they know what effect deactivating or uninstalling one might have.
- The user might want to "save" a set of VF axis settings for later reuse. That obviously also requires toolkit and application support, but users may expect their VF "palette" to behave in a persistent fashion and be accessible where they access their other fonts.