[Haskell-cafe] Interaction in Haskell

[Dinh Tien Tuan Anh]

Hi,
im using Hugs 98 and learing how to use interactive Haskell.
As read in the book:

      capitalise :: [Char] -> [Char]
      capitalise = takeWhile(/='.') . map toUpper


      interact capitalise

its said the program is FULLY INTERACTIVE, i.e: as soon as 'h' typed on the 
keyboard, an 'H' appears on the screen. But the program above always waits 
untill ENTER was hit to display the result

Is this normal ? Is the book right ?
I thought if the list was evaluated lazily, then it should be fully 
interactive.

Cheers.

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