[Haskell-cafe] ghci REPL output under Haskell Platform on Mac OS X

[Henning Thielemann]

Mark Lentczner schrieb:
> My ghci installation has a very annoying behavior: When it takes input,
> the result is displayed on the same line as the input, overwriting the
> prompt and input.  Viz.:
> 
>     [1015] : ghci
>     GHCi, version 6.10.4: http://www.haskell.org/ghc/  :? for help
>     Loading package ghc-prim ... linking ... done.
>     Loading package integer ... linking ... done.
>     Loading package base ... linking ... done.
>     7relude> 3 + 4
>     Prelude>
> 
> Note the 7 that overwrites the P in Prelude.
> 
> I have had several prior versions of ghci installed, most recently
> 6.10.1, and they never had this problem. (In other words, I saw:
> 
>     Prelude> 3 + 4
>     7
>     Prelude>

I had a similar problem with Haskeline and an too old version of
terminfo. I assume Haskeline is used by your GHC instead of readline.
Now I'm using self-compiled ghci-haskeline.