_nova()
{
    local cur prev opts
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    opts="add-fixed-ip backup backup-schedule backup-schedule-delete boot
          boot-for-account delete delete diagnostics flavor-list image-create
          image-delete image-list ip-share ip-unshare ipgroup-create
          ipgroup-delete ipgroup-list ipgroup-show list migrate pause reboot
          rebuild remove-fixed-ip rename rescue resize resize-confirm
          resize-revert resume root-password show suspend unpause unrescue
          zone zone-add zone-boot zone-delete zone-info zone-list help
          --debug --endpoint_name --password --projectid --region_name --url
          --username --version"
    COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
}
complete -F _nova nova