getContents, getLine, etc.

Malcolm Wallace Malcolm.Wallace@cs.york.ac.uk
Fri, 1 Aug 2003 11:02:02 +0100 

This is a multi-part message in MIME format.

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"Wojciech Moczydlowski, Jr" <khaliff@astercity.net> writes:

>                          However, backspace doesn't work, no matter which
> function(getContents, getLine) I use, which makes debugging and normal work
> with the program a nightmare. Does anyone know any workaround (i.e. sensible
> replacement to getLine) apart from switching to ghc and using the readline 
> library?

I recently posted the attached "SimpleLineEditor" module to the Haskell
libraries mailing list.  To use the module in Hugs, you probably need
to run it through cpp before loading it.  Then, call
    initialise     :: IO ()
before reading the terminal, and
    restore        :: IO ()
afterwards, and the replacement for Prelude.getLine is
    getLineEdited  :: String -> IO (Maybe String)
where the string argument is the prompt for the user.

Regards,
    Malcolm

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