Problem: packed UTF 9

Code: packed+UTF+9/tails_1642069994

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)

(implicit map) 
    << (init) 
        \ (reverse) 
            `@ (to base) 
                512 (integer) 
                r (read str at base) 
                    + (concat) 
                        \ (reverse) 
                            % (split (remove empties)) 
                                @ (= fstLine) 
                                ~ (auto = words) 
                    16 (integer) 
    ch (chr) <--arg( B A ) 
        (implicit arg = B)