shellspec/shellspec

# shellcheck shell=sh disable=SC2016,SC2154
# [getoptions_abbr] License: Creative Commons Zero v1.0 Universal
getoptions_abbr() {
    abbr() {
        _3 "case '$1' in"
        _4 '"$1") OPTARG=; break ;;'
        _4 '$1*) OPTARG="$OPTARG '"$1"'"'
        _3 'esac'
    }
    args() {
        abbr=1
        shift
        for i; do
            case $i in
                --) break ;;
                [!-+]*) eval "${i%%:*}=\${i#*:}"
            esac
        done
        [ "$abbr" ] || return 0

        for i; do
            case $i in
                --) break ;;
                --\{no-\}*) abbr "--${i#--\{no-\}}"; abbr "--no-${i#--\{no-\}}" ;;
                --*) abbr "$i"
            esac
        done
    }
    setup() { :; }
    for i in flag param option disp; do
        eval "_$i()" '{ args "$@"; }'
    done
    msg() { :; }
    _2 'set -- "${1%%\=*}" "${1#*\=}" "$@"'
    [ "$_alt" ] && _2 'case $1 in -[!-]?*) set -- "-$@"; esac'
    _2 'while [ ${#1} -gt 2 ]; do'
    _3 'case $1 in (*[!a-zA-Z0-9_-]*) break; esac'
    "$@"
    _3 'break'
    _2 'done'
    _2 'case ${OPTARG# } in'
    _3 '*\ *)'
    _4 'eval "set -- $OPTARG $1 $OPTARG"'
    _4 'OPTIND=$((($#+1)/2)) OPTARG=$1; shift'
    _4 'while [ $# -gt "$OPTIND" ]; do OPTARG="$OPTARG, $1"; shift; done'
    _4 'set "Ambiguous option: $1 (could be $OPTARG)" ambiguous "$@"'
    [ "$_error" ] && _4 "$_error" '"$@" >&2 || exit $?'
    _4 'echo "$1" >&2'
    _4 'exit 1 ;;'
    _3 '?*)'
    _4 '[ "$2" = "$3" ] || OPTARG="$OPTARG=$2"'
    _4 "shift 3; eval 'set -- \"\${OPTARG# }\"' \${1+'\"\$@\"'}; OPTARG= ;;"
    _3 '*) shift 2'
    _2 'esac'
}