[spec] IRIs, IDNs, and all that international jazz

[Petite Abeille]

> On Dec 26, 2020, at 21:25, colecmac at protonmail.com wrote:
> 
> This likely because the Go stdlib is high quality, and appears to be coded to follow RFCs very strictly, and the library was only designed to support URLs, and not IRIs.

Would a strict ANTLR grammar for IRI help?

https://pkg.go.dev/bramp.net/antlr4/iri
https://github.com/antlr/grammars-v4/blob/master/iri/IRI.g4