allow line-breaks inside of rules? 🤔

[increpare]

I mean, there's no logically reason it should be impossible... where line-spacing is concerned I think no ambiguity can be introduced...just slightly awkward because it would probably require more up-front parsing, and you wouldn't know you're at the end of one rule until the start of the next...

[jcmiller11]

I feel like this would make helpful error reporting more difficult, in a case such as
[object1] [object2] -> [object3]
[object4] [object1] -> [object4] [object1]
which line do you say doesn't have the correct number of matches?

[increpare]

the first :)

(but yes, it would be trickier - you'd have to look ahead, and probably use weird heuristics and awkward and unsolvable edge-cases)