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# bash completion for zopflipng                            -*- shell-script -*-

_zopflipng()
{
    local cur prev words cword split
    _init_completion -s || return

    case $prev in
        -h | --help)
            return
            ;;
        --splitting)
            COMPREPLY=($(compgen -W '{0..3}' -- "$cur"))
            return
            ;;
    esac

    $split && return

    if [[ $cur == -* ]]; then
        COMPREPLY=($(_parse_help "$1" -h))
        COMPREPLY=($(compgen -W '${COMPREPLY[@]%:}' -- "$cur"))
        [[ ${COMPREPLY-} == *= ]] && compopt -o nospace
        return
    fi

    if [[ ${words[*]} != *\ --prefix=* ]]; then
        # 2 png args only if --prefix not given
        local args
        _count_args
        ((args < 3)) && _filedir png
    else
        # otherwise arbitrary number of png args
        _filedir png
    fi
} &&
    complete -F _zopflipng zopflipng

# ex: filetype=sh