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i don't see any interact example within ruby expect; is this not
implemented yet ?

ie to mimic :

#!/sw/bin/expect -f

spawn ssh -6 mfj@Gericom
expect "Password: "
send "THE password\n"
expect "imyt-2-% "
interact {
\003 {send_user "exiting, bye!\n";send "exit\n";exit}
}

here i open an SSH connexion and leave the user, me, do what he want
until he pressed CTRL C to exit.