In Haskell, how do you trim whitespace from the beginning and end of a string?

Question

How do you trim whitespace from the start and end of a string?

trim \"  abc \" 

=>

\"abc\"

Edit:

Ok, let me be a little cleare

Answer 1

Another (std) solution

import System.Environment
import Data.Text

strip :: String -> IO String
strip = return . unpack . Data.Text.strip . pack

main = getLine >>= Main.strip >>= putStrLn