[Haskell-cafe] Interactive chatbot

[Jason Dagit]

On Wed, Nov 4, 2009 at 2:21 PM, Torsten Otto <t-otto-news at gmx.de> wrote:

> Hi!
>
> My students have the task to program an interactive chatbot. We have run
> into a problem that I can't solve either:
>
> When we read the user's input through
> >   t <- getLine
> it is not possible to delete typos before hitting enter and thereby sending
> the input off to the system (at least in OS X, bash). I didn't find that
> terribly problematic, but of course it is a bit of a show stopper from their
> point of view.
>

Is it possible that you need to tweak the input buffering settings?
http://haskell.org/ghc/docs/latest/html/libraries/base/System-IO.html#v:hSetBuffering

You probably want to look at 'interact' also.

Or just switch to readline as others have suggested.

Jason
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