See also exactly 390 bytes and Ode for getprotobyname, and read their threads too. These also tell how to avoid the -l switch.

Update: Indigo japh is not a pure alphabetic japh, it has some commas and a semicolon.

Update: I belive you've found it out without my help, but I think it is the same method I've suggested: the one in the beginning of Re (Obfu generator for): Ode for getprotobyname. And I felt just as stupid after I've found it. To clarify, the method is...