___         ___ _
  / _ \ /\  /\/ __(_)
 / /_\// /_/ / /  | |      GHC Interactive, version 5.03, for Haskell 98.
/ /_\\/ __  / /___| |      http://www.haskell.org/ghc/
\____/\/ /_/\____/|_|      Type :? for help.

Loading package std ... linking ... done.
Prelude> -- !!! test `:set args' and `:set prog'
Prelude> System.getArgs
Prelude> print it
[]
Prelude> System.getProgName
Prelude> print it
"<interactive>"
Prelude> :set args
Prelude> System.getArgs
Prelude> print it
[]
Prelude> System.getProgName
Prelude> print it
"<interactive>"
Prelude> :set args foo bar
Prelude> System.getArgs
Prelude> print it
["foo","bar"]
Prelude> System.getProgName
Prelude> print it
"<interactive>"
Prelude> :set prog foo
Prelude> System.getArgs
Prelude> print it
["foo","bar"]
Prelude> System.getProgName
Prelude> print it
"foo"
Prelude> Leaving GHCi.