Problem: binary

Code: binary/tails_1674178001

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)

Note: This code seems to be written in Nibbles version >= 0.25

(implicit string concatenation) 
    : (append) 
        `$ (signum) 
            ~ (auto) 
        $ (= fstInt) 
    "\n" (string) <--arg( B A )