_have debsums &&
_debsums()
{
    local cur prev words cword
    _init_completion || return

    if [[ "$cur" == -* ]]; then
        COMPREPLY=( $( compgen -W '$( _parse_help "$1" )' -- "$cur" ) )
    else
        COMPREPLY=( $(_xfunc dpkg _comp_dpkg_installed_packages "$cur") )
    fi
} &&
complete -F _debsums -o default debsums