From: Michael <misha@...>
Date: 2008-01-04T04:13:20+09:00
Subject: Way of handling CLI interface for chat program.

Hello, folks.

I'm trying to write simple CLI program which will be some kind of
chat, but i have faced with some output problem.
Is it possible to output over current line in stdout?

User types something in prompt> and at this moment message from
another user arrives. Currently, I'm using readline, and if i just
<puts "\n#{user}: #{message}\n"> I'll end with following

screen 2:
------------------------------------------
$ ./chat.rb
prompt> hello, peo <-he was typing
UserA: Ruby is cool!!!!1111

------------------------------------------

So, my goal is output "UserA.." over my prompt>, to not confuse user
and do not make him retype everything on every event.

------------------------------------------
$ ./chat.rb
UserA: Ruby is cool!!!!1111
prompt> hello, peo <-he is still typing..
------------------------------------------

Thanks for any help.