_gtk4_rendernode_tool()
{
    local cur prev cmd opts
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"

    if [[ "$COMP_CWORD" == "1" ]] ; then
      local commands="benchmark compare extract info show render"
      COMPREPLY=( $(compgen -W "${commands}" -- ${cur}) )
      return 0
    fi

    cmd="${COMP_WORDS[1]}"

    case "${prev}" in
        --)
            return 0
            ;;

        --renderer)
            local renderers="cairo ngl vulkan"
            COMPREPLY=( $(compgen -W "${renderers}" -- ${cur}) )
            return 0
            ;;

        --runs)
            return 0
            ;;

        --output)
            COMPREPLY=( $(compgen -o filenames -- ${cur}) )
            return 0
            ;;

        --dir)
            COMPREPLY=( $(compgen -o dirnames -- ${cur}) )
            return 0
            ;;

    esac

    case "${cmd}" in
        benchmark)
            opts="--help --renderer --runs --no-download"
            COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
            return 0
            ;;

        compare)
            opts="--help --renderer --output --quiet"
            COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
            return 0
            ;;

        convert)
            opts="--help --recolor --fg --success --warning --error --size"
            COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
            return 0
            ;;

        extract)
            opts="--help --dir --verbose"
            COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
            return 0
            ;;

        info)
            opts="--help"
            COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
            return 0
            ;;

        show)
            opts="--help --undecorated"
            COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
            return 0
            ;;

        render)
            opts="--help --renderer --dont-move"
            COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
            return 0
            ;;
    esac
}

complete -o default -F _gtk4_rendernode_tool gtk4-rendernode-tool