add_dmesg() {
  echo '** Kernel log:' >&3
  dmesg | tail -n 100 >&3
  echo >&3
}

ask_dmesg() {
  # Remind the user to attach the kernel log.  This should also trigger
  # a reminder in some MUAs if the user tries to send without it.
  echo '** Kernel log: boot messages should be attached' >&3
  echo >&3
}