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

proc _gzip
{
    local cur prev words cword
    _init_completion || return

    match $prev {
        with -b|--blocksize|-S|--suffix|-h|--help|-V|--version
            return 0
            
        with -p|--processes
            setglobal COMPREPLY = ''( $( compgen -W "{1..$(_ncpus)}" -- "$cur" ) )
            return 0
            
    }

    if [[ "$cur" == -* ]] {
        setglobal COMPREPLY = ''( $( compgen -W '$( _parse_help "$1" ) {-1..-9}' \
            -- "$cur" ) )
        [[ $COMPREPLY == *= ]] && compopt -o nospace
        return 0
    }

    local IFS=$'\n' xspec="*.@(gz|t[ag]z)"
    [[ ${1##*/} == pigz ]] && setglobal xspec = '"*.@([gz]z|t[ag]z)'"

    if [[ "$prev" == --* ]] {
        [[ "$prev" == --@(decompress|list|test) ]] && setglobal xspec = ""!"$xspec"
        [[ "$prev" == --force ]] && setglobal xspec = ''
    } elif [[ "$prev" == -* ]] {
        [[ "$prev" == -*[dlt]* ]] && setglobal xspec = ""!"$xspec"
        [[ "$prev" == -*f* ]] && setglobal xspec = ''
    }

    _expand || return 0

    compopt -o filenames
    setglobal COMPREPLY = ''( $( compgen -f -X "$xspec" -- "$cur" ) \
        $( compgen -d -- "$cur" ) )
} &&
complete -F _gzip gzip pigz

# ex: ts=4 sw=4 et filetype=sh