Question

import System.Directory
import qualified Data.ByteString as BS  
import qualified Data.ByteString.UTF8 as BS_UTF8

main = do
    putStrLn "Input path to some file: "
    raw_inputed_path <- BS.getLine
    let inputed_path = BS_UTF8.toString raw_inputed_path
    such_file_exists <- doesFileExist inputed_path
    such_directory_exists <- doesDirectoryExist inputed_path
    if such_file_exists 
        then putStrLn "Yeah, I see it!"
        else if such_directory_exists
            then putStrLn "Aha, I see it, but it's a directory!"
            else putStrLn "Hmm... No such..."

This code perfectly works with ASCII-paths only. But if I use paths with non-ASCII symbols, doesFileExist and doesDirectoryExist always return False. Why?

• Debian GNU/Linux 6.0 x86_64
• ghc 6.12.1

Answer 1

Upgrade to GHC 7.x series – 6.12 is now nearly 3 years out of date. The behavior was fixed around a year ago.