String matching of Web links

[xfq]

Links
https://w3c.github.io/wot-architecture/#sec-hypermedia-links

Link relation types are either a set of predefined tokens that are registered with IANA, (e.g. stylesheet), or extension types in the form of URIs. Extension relation types MUST be compared as strings using a case-insensitive comparison. (If they are serialized in a different format they are to be converted to URIs). Nevertheless, all-lowercase URIs SHOULD be used for extension relation types.

I assume it uses ASCII case-insensitive matching instead of Unicode full casefold matching?

If so, it might be useful to link to https://infra.spec.whatwg.org/#ascii-case-insensitive to make it clear.

[mlagally]

Resolved via #795