_halp() {
    local i cur prev opts cmd
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    cmd=""
    opts=""

    for i in ${COMP_WORDS[@]}
    do
        case "${cmd},${i}" in
            ",$1")
                cmd="halp"
                ;;
            halp,plz)
                cmd="halp__plz"
                ;;
            *)
                ;;
        esac
    done

    case "${cmd}" in
        halp)
            opts="-c -v -h -V --check --no-version --no-help --config --verbose --help --version <CMD> plz"
            if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                return 0
            fi
            case "${prev}" in
                --check)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
                --config)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
                -c)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
                *)
                    COMPREPLY=()
                    ;;
            esac
            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
            return 0
            ;;
        halp__plz)
            opts="-m -p -h --man-cmd --pager --no-pager --help <CMD>"
            if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                return 0
            fi
            case "${prev}" in
                --man-cmd)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
                -m)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
                --pager)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
                -p)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
                *)
                    COMPREPLY=()
                    ;;
            esac
            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
            return 0
            ;;
    esac
}

complete -F _halp -o bashdefault -o default halp
