Pretty nice minimal grammar notation. Simple, but not very compact. ABNF[0] is less beautiful but a bit faster to read and write, mostly thanks to having synta

Pretty nice minimal grammar notation. Simple, but not very compact. ABNF[0] is less beautiful but a bit faster to read and write, mostly thanks to having syntax for explicit repetition. [0] https://en.wikipedia.org/wiki/Augmented_Backus%E2%80%93Naur_form https://en.wikipedia.org/wiki/Augmented_Backus%E2%80%93Naur_...