Upstart bash auto-completion that works on RHEL/CentOS with older versions of Upstart.

upstart_completion.sh

# bash-completion for the upstart event-based init replacement
# (http://upstart.ubuntu.com / https://launchpad.net/upstart)
#
# We don't provide completion for 'init' itself for obvious reasons.

# Original is from: https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/672067/+attachment/1765103/+files/upstart.sh

_upstart_conf_events()
{
  initctl list|awk '{print $1}'
}
_upstart_named_events()
{
  (cd /etc/init && grep '^emits ' *.conf|sed 's/^emits //g')
}
_upstart_events()
{
  (_upstart_conf_events;_upstart_named_events)|tr ' ' '\n'|sort -u
}
_upstart_startable_events()
{
  initctl list|cut -d\, -f1|awk '$2 == "stop/waiting" {print $1}'
}
_upstart_stoppable_events()
{
  initctl list|cut -d\, -f1|awk '$2 == "start/running" {print $1}'
}
_upstart_initctl()
{
  _get_comp_words_by_ref cur prev

  COMPREPLY=()

  case "$prev" in

    start)
      COMPREPLY=( $(compgen -W "-n --no-wait $(_upstart_startable_events)" -- ${cur}) )
      return 0
    ;;

    stop)
      COMPREPLY=( $(compgen -W "-n --no-wait $(_upstart_stoppable_events)" -- ${cur}) )
      return 0
    ;;

    emit)
      COMPREPLY=( $(compgen -W "$(_upstart_events)" -- ${cur}) )
      return 0
    ;;

    reload|restart|status)
      COMPREPLY=( $(compgen -W "$(_upstart_conf_events)" -- ${cur}) )
      return 0
    ;;

    -n|--no-wait)
      # allow no wait after start/stop commands
      for cmd in start stop
      do
        cwords=${COMP_WORDS[@]##}
        filtered_cwords=${COMP_WORDS[@]##${cmd}}
        if [ "$filtered_cwords" != "$cwords" ]
        then
          COMPREPLY=( $(compgen -W "$(_upstart_${cmd}able_events)" -- ${cur}) )
          return 0
        fi
      done
    ;;

    --help|--version)
      COMPREPLY=()
      return 0
    ;;
  esac

  opts="--help --version -q --quiet -v --verbose --system --dest="
  cmds=$(initctl help|grep "^  [^ ]"|awk '{print $1}')

  COMPREPLY=( $(compgen -W "${opts} ${cmds}" -- ${cur}) )

} && complete -F _upstart_initctl initctl

_upstart_start()
{
  COMPREPLY=()
  _get_comp_words_by_ref cur prev

  opts="--help --version -q --quiet -v --verbose --system --dest= \
        -n --no-wait"

  case "$prev" in
    --help|--version)
      COMPREPLY=()
      return 0
    ;;
  esac

  COMPREPLY=( $(compgen -W "$opts $(_upstart_startable_events)" -- ${cur}) )
  return 0
} && complete -F _upstart_start start

_upstart_stop()
{
  COMPREPLY=()
  _get_comp_words_by_ref cur prev

  opts="--help --version -q --quiet -v --verbose --system --dest= \
        -n --no-wait"

  case "$prev" in
    --help|--version)
      COMPREPLY=()
      return 0
    ;;
  esac

  COMPREPLY=( $(compgen -W "$opts $(_upstart_stoppable_events)" -- ${cur}) )
  return 0
} && complete -F _upstart_stop stop

_upstart_restart()
{
  COMPREPLY=()
  _get_comp_words_by_ref cur prev

  opts="--help --version -q --quiet -v --verbose --system --dest= \
        -n --no-wait"

  case "$prev" in
    --help|--version)
      COMPREPLY=()
      return 0
    ;;
  esac

  COMPREPLY=( $(compgen -W "$opts $(_upstart_events)" -- ${cur}) )
  return 0

} && complete -F _upstart_restart restart

_upstart_status()
{
  COMPREPLY=()
  _get_comp_words_by_ref cur prev

  opts="--help --version -q --quiet -v --verbose --system --dest="

  case "$prev" in
    --help|--version)
      COMPREPLY=()
      return 0
    ;;
  esac

  COMPREPLY=( $(compgen -W "$opts $(_upstart_events)" -- ${cur}) )
  return 0

} && complete -F _upstart_status status

_upstart_reload()
{
  COMPREPLY=()
  _get_comp_words_by_ref cur prev

  opts="--help --version -q --quiet -v --verbose --system --dest="

  case "$prev" in
    --help|--version)
      COMPREPLY=()
      return 0
    ;;
  esac

  COMPREPLY=( $(compgen -W "$opts $(_upstart_events)" -- ${cur}) )
  return 0

} && complete -F _upstart_reload reload