`show` command no longer needs formatted signature.
`show` command no longer needs formatted signature.

… except as fallback when source code is unavailable. 

adetch/psysh,mubassirhayat/psysh,lvht/psysh,damiankloip/psysh,lvht/psysh,mubassirhayat/psysh,damiankloip/psysh,damiankloip/psysh,bobthecow/psysh,bobthecow/psysh,adetch/psysh