bash-complete

OPTS='-h -v -x'
COMMANDS='help version extract install update new tests info repl'
NEW='script library service yaws presentation'
INSTALL='lfetool autocomplete lfe erlang kerl rebar relx expm erjang'
YAWS='default bootstrap'
TESTS='build unit integration system all'
UPDATE='lfetool deps'
INFO='version erllibs path installdir bindir'
REPL='lfe erlang jlfe jerl'

_get-lfetool-opts-and-commands () {
    local cur prev      # current and previous completion word
    COMPREPLY=()        # array for possible completions
    cur=${COMP_WORDS[COMP_CWORD]}
    prev=${COMP_WORDS[COMP_CWORD-1]}
    case "$cur" in
        -*)
            COMPREPLY=($(compgen -W "${OPTS}" -- $cur))
            ;;
        *)
            COMPREPLY=($(compgen -W "${COMMANDS} ${OPTS}" -- $cur))
            ;;
    esac
    case "$prev" in
        install)
            COMPREPLY=($(compgen -W "${INSTALL}" -- $cur))
            ;;
        new)
            COMPREPLY=($(compgen -W "${NEW}" -- $cur))
            ;;
        yaws)
            COMPREPLY=($(compgen -W "${YAWS}" -- $cur))
            ;;
        tests)
            COMPREPLY=($(compgen -W "${TESTS}" -- $cur))
            ;;
        update)
            COMPREPLY=($(compgen -W "${UPDATE}" -- $cur))
            ;;
        info)
            COMPREPLY=($(compgen -W "${INFO}" -- $cur))
            ;;
        repl)
            COMPREPLY=($(compgen -W "${REPL}" -- $cur))
            ;;
        # no more tab-completion for these ...
        # XXX there has *got* to be a nicer way to do this; we want to have no
        # TAB-completion for *any* of the final commands ...
        help)
            COMPREPLY=($(compgen -W "" -- $cur))
            ;;
        version)
            COMPREPLY=($(compgen -W "" -- $cur))
            ;;
        extract)
            COMPREPLY=($(compgen -W "" -- $cur))
            ;;
        -*)
            COMPREPLY=($(compgen -W "" -- $cur))
            ;;
    esac
    return 0
}

complete -F _get-lfetool-opts-and-commands \
    -o filenames `which lfetool` lfetool ./lfetool