Problem: Shifting Pattern Fixed

Code: Shifting+Pattern+Fixed/tails_1646611779

Nibbles version: 0.2 | 0.21 | 0.22 | 0.23 | 0.24 | 0.25 | 1.00

Format: Compact | Simple | +Type | Table | JSON | .nbl (DeBruijn) | .nbl (names)

`. (iterate while uniq):[[chr]] 
    @ (= fstLine):[chr] 
    : (append):[chr] <--arg( A:[chr] ) 
        `( (uncons):chr -->let( B:[chr] ) 
            \ (reverse):[chr] 
                $ (= A):[chr] 
        \ (reverse):[chr] 
            (implicit arg = B):[chr]