# code: http://golf.shinh.org/reveal.rb?Simple+Preprocessor/whio_1749166554&nbb
# target Nibbles version: 1.00
# commenter version: 0.1.6.187

| #(filter):[[chr]] 
    . #(map):[[chr]] 
        allLines #(;@):[[chr]] 
        \A 
        -~ #(strip):[chr] 
            A #($):[chr] 
    ~ #(not):null 
    \B 
    ? #(index):int 
        "# " #(string):[chr] 
        / #(foldr1):chr 
            #(implicit arg = B):[chr] 
            #\D C 
            #(implicit arg = D):chr