See https://srfi.schemers.org/srfi-110/srfi-110.html https://srfi.schemers.org/srfi-110/srfi-110.html. No idea why it hasn't shown up in a popular language (or

See https://srfi.schemers.org/srfi-110/srfi-110.html https://srfi.schemers.org/srfi-110/srfi-110.html. No idea why it hasn't shown up in a popular language (or maybe it has and I'm just naive).