# lz4 completion                                           -*- shell-script -*-

_lz4()
{
    local cur prev words cword
    _init_completion || return

    case $prev in
        -b)
            _filedir
            return
            ;;
    esac

    if [[ $cur == -* ]]; then
        COMPREPLY=($(compgen -X '-*#*' -W \
            '$(_parse_help "$1" -h) -B{4..7} -i{1..9}' -- "$cur"))
        return
    fi

    local args word xspec="*.?(t)lz4"
    _count_args
    ((args > 2)) && return

    for word in "${words[@]}"; do
        case $word in
            -*[dt]*)
                case $args in
                    1) xspec="!"$xspec ;;
                    2) [[ $word == *t* ]] && return ;;
                esac
                break
                ;;
            -z)
                case $args in
                    1) xspec= ;;
                    2) xspec="!"$xspec ;;
                esac
                break
                ;;
        esac
    done

    _tilde "$cur" || return

    local IFS=$'\n'
    compopt -o filenames
    COMPREPLY=($(compgen -f -X "$xspec" -- "$cur") $(compgen -d -- "$cur"))
} &&
    complete -F _lz4 lz4 lz4c

# ex: filetype=sh