This repository was archived by the owner on Oct 5, 2022. It is now read-only.
This repository was archived by the owner on Oct 5, 2022. It is now read-only.
Repl inputs not being written to its history #62
Description
This happens on v0.7.13 also.
How to reproduce:
module Ch13 where
import Control.Monad
import System.IO (hSetBuffering, stdout, BufferMode(..))
import System.Exit (exitSuccess)
import Data.Char (isLetter, toLower)
-- Madam I’m Adam,
palindrome :: IO ()
palindrome = do
hSetBuffering stdout NoBuffering
forever $ do
line <- getLine
if isPalindrome line
then do
putStrLn "It's a palindrome!"
exitSuccess
else putStrLn "Nope!"
isPalindrome :: String -> Bool
isPalindrome s = sm == reverse sm
where
sm = toLower <$> filter isLetter sLoad the module in the repl with :l
Type palindrome and
Type anything. Whatever you typed will not be written to the REPL history. If the Interrupts current computation button is pressed then the strings typed will appear in the history.
Expected behavior (repl run from terminal):
*Ch13> palindrome
qwe
Nope!
nqwejbqwe
Nope!
Madam I'm Adam
It's a palindrome!
*** Exception: ExitSuccess
Extra note, when interrupting, in the Repl tab it is printed:
Interrupted.
Variable not in scope: quehquehiquehiwe
So it appears that the Repl was treating the palindrome program input as input to the Repl itself and there was no variable named quehquehiquehiwe
This works as intended if run directly from GHCI.
Ref: #61