# code: http://golf.shinh.org/reveal.rb?stop/tails_1685684072&nbb
# target Nibbles version: 0.24
# commenter version: 0.1.6.187

< #(take):[chr] 
    `/ #(special folds):int 
        ! #(zip with):[int] 
            @ #(= fstLine):[chr] 
            "stop" #(string):[chr] <--arg( A:chr ) 
            ? #(zipop: index):null 
        ] #(foldop: max):null 
    @ #(= fstLine):[chr]