day 1 part 1 golfed m4: 197 bytes

[aoc_eblake.git] / 2023 / day01.golfm4

define(X,`ifelse($3,-1,`$1,$2',$3,0,`,',$1,,`$3,$3',`$1,$3')')define(_,`ifelse($3,,$1$2+)ifelse($4,,$1$2,`_(X($1,$2,index(0123456789,$3)),substr(`$4',0,1),substr(`$4',1))')')eval(_(,,,include(F) ))