Module patchmap 

Loads incremental font transfer https://w3c.github.io/IFT/Overview.html patch mappings.

The IFT and IFTX tables encode mappings from subset definitions to URL’s which host patches that can be applied to the font to add support for the corresponding subset definition.

Structs

PatchMapEntry

Stores a collection of URLs associated with each patch mapping entry.

PatchUrl

An expanded PatchUrl string which identifies where a patch is located.

SubsetDefinition

Stores a description of a font subset over codepoints, feature tags, and design space.

Enums

DesignSpace

Stores a collection of ranges across zero or more axes.

FeatureSet

Stores a set of features tags, can additionally represent all features.

PatchFormat

Models the encoding type for a incremental font transfer patch. See: https://w3c.github.io/IFT/Overview.html#font-patch-formats-summary

PatchId

Id for a patch which will be subbed into a URL template. The spec allows integer or string IDs.

Functions

intersecting_patches

Find the set of patches which intersect the specified subset definition.