# code: http://golf.shinh.org/reveal.rb?char+pyramid/darrenks_1643308166&nbb
# target Nibbles version: 0.2
# commenter version: 0.1.2.181

& #(justify):[[chr]] 
    " " #(string):[chr] 
    0 #(integer):int 
    ~ #(center):null 
    . #(map):[[chr]] 
        \ #(reverse):[chr] 
            `\ #(special scans):[chr] 
                @ #(= fstLine):[chr] 
                #(foldop: undefined nibble 0xd (try Nibbles version >=0.22)):null 
        & #(justify):[chr] <--arg( A:chr ) 
            " " #(string):[chr] 
            o #(ord):int 
                $ #(= A):chr 
            $ #(= A):chr