[Haskell-cafe] Interactive chatbot

Ben Millwood haskell at benmachine.co.uk
Wed Nov 4 20:00:13 EST 2009

Oops, I clicked "reply" instead of "reply to all". Duplicating the
message below.
I suppose this means someone is going to get two copies of this. Sorry someone!

On Thu, Nov 5, 2009 at 12:56 AM, Ben Millwood <haskell at benmachine.co.uk> wrote:
> On Wed, Nov 4, 2009 at 10:21 PM, Torsten Otto <t-otto-news at gmx.de> wrote:
>> 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.
> As people have said it's worth checking what buffering settings you
> are using (especially note that ghci changes some interesting settings
> in relation to how input is handled, and compiled code may behave
> differently), but it might also be worth checking the terminal
> application's preferences to see if there are settings related to the
> interpretation of the backspace key that you need to twiddle one way
> or the other. In particular, if you are finding that pressing delete
> makes ^H appear on the input line instead of deleting things, or if
> pressing ctrl-H deletes stuff where the delete key fails to do so, it
> might be a problem with your terminal rather than with your program.
> This is only based on what I vaguely remember from faffing with the
> Mac Terminal application some time ago when it wouldn't co-operate
> with screen, but it may be worth a look.
> yours,
> Ben Millwood

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