rlwrap could mirror client's interrupt character earlier

[hanslub42]

When the rlwrapped command changes its interrupt character (usually from CTRL-C to something else), rlwrap only follows suit after the next user input. It probably could already do this after the next client output (which will cover a lot of cases where the client does this at program start, and then outputs some kind of welcome banner)

Of course one can always use rlwrap --polling, but this will come at a cost (e.g.in battery life)

[hanslub42]

Another idea would be to let even a non--polling rlwrap poll once say 0.1 secs after spawning the client. Again, this would cover a great number of cases (though not all of them) where the client changes or disables its interrupt characters.