mattie is a language for my cat, whose name is mattie :3

mattie is about turning strings into other strings.

here’s a simple rule 110 stepper:

rule110 <- '111 -> '0
         | '110 -> '1
         | '101 -> '1
         | '100 -> '0
         | '011 -> '1
         | '010 -> '1
         | '001 -> '1
         | '000 -> '0
loop <- ... & main | .* -> ""
main <- (.(..)< -> rule110)*! ((.* -> "
")! -> "") -> loop

run-mattie.ss runs mattie the program in the 1st argument with the 2nd
argument as input. the program has to have a main rule.

maybe there will be a better interface & docs l8r, idk