RE: getChar in ghc-4.02, hugs

[Sigbjorn Finne (Intl Vendor)]

Hi,

ghc implements the (Haskell98-specified) default behaviour of
stdin being line buffered ; Hugs opts (for good reasons)
to make stdin un-buffered by default. Use hSetBuffering to
be sure that you get the same buffering across systems.

--sigbjorn

[EMAIL PROTECTED] <[EMAIL PROTECTED]> writes: 
> 
> ghc-4.02  and  hugs98-March99  perform differently the program
> 
>   main = getChar >> putStr "finished"
>  
> 
> ghc   accepts the input keys  a, b ... without proceeding to  putStr,
>       finally, the Enter key forces this  putStr.
> 
> hugs  gets to  putStr  after any first key stroke (which was my aim).
> 
> Does the Hugs dialogue shell matter here?
> Which behaviour is of correct Haskell-98 ?
> 
> ------------------
> Sergey Mechveliani
> [EMAIL PROTECTED]
>