The command exp_continue allows expect itself to continue executing rather than returning as it normally would. 

This is useful for avoiding explicit loops or repeated expect statements. 

The following example is part of a fragment to automate rlogin.  The exp_continue avoids having to write a second expect statement (to look for the prompt again) if the rlogin prompts for a password.

expect {
  Password: {
    stty -echo
    send_user “password (for $user):"
    expect_user -re “(.*)\n”
    send_user “\n”
    send “$expect_out(1,string)\r”
    stty echo
    exp_continue
  } incorrect {
    send_user “invalid password\n”
    exit
  } timeout {
    send_user “connection timed out”
    exit
  } eof {
    send_user “connection failed:\
      $expect_out(buffer)”
    exit
  } -re $prompt
}

stty raw -echo
expect_after {
    -i $user_spawn_id
    “p” {send “\r\r\r”; exp_continue}
    “+” {incr foo; exp_continue}
    “i” {interact; exp_continue}
    “quit” exit
 }

By default, exp_continue resets the timeout timer.  The timer is not restarted, if exp_continue is called with the -continue_timer flag.