ref: 20490c2ef5e639ba6034a47a03d0ca8bca16404f
dir: /tests/Readline.hs/
module Readline(main) where
import Prelude
import System.Console.SimpleReadline
main :: IO ()
main = do
  putStrLn "Type 'quit' to quit."
  loop
loop :: IO ()
loop = do
  s <- getInputLineHist "hist.txt" "% "
  case s of
    Just "quit" -> putStrLn "Bye"
    _ -> do putStrLn $ showMaybe showString s; loop