while test $# -gt 0; do
    DO_SHIFT=:
    case "$1" in
        "-files" )
            shift
            get_listargs "$@"
            for f in  ${!ARGS_ARRAY[@]}; do
                FILES[f]="$(abspath "${ARGS_ARRAY[f]}")"
            done
            ;;
        "-titleset" )
            shift
            unset x ARGS_ARRAY
            # Hackish list-parsing
            while test $# -gt 0 && test "$1" != "-end-titleset"; do
                ARGS_ARRAY[x++]=\"$1\"
                shift
            done
            # Do not skip past the next argument
            if test $# -gt 0 && test x"${1:0:1}" = x"-";then
                DO_SHIFT=false
            fi
            TITLESET_OPTS[y++]="${ARGS_ARRAY[@]}"
            DO_TITLESETS=:
            ;;

. . .


function titleset_mode()
# call todisc recursively in order to allow titlesets
{
    ! $GROUPING && mk_workdir
#    cd "$WORK_DIR"
    DVDAUTHOR_XML=$BASEDIR/dvdauthor.xml
    # make dvdauthor.xml
(
    cat <<EOF
<?xml version="1.0" encoding="utf-8"?>
<dvdauthor dest="$OUT_DIR" jumppad="0">
  <vmgm>
    <menus>
    <pgc entry="title" pause="inf">
$(for ((i=1; i<=${#TITLESET_OPTS[@]}; i++)); do echo "      <button name=\"$i\">jump titleset $i menu;</button>"; done)
      <vob file="$BASEDIR/VMGM.mpg"/>
    </pgc>
    </menus>
  </vmgm>
EOF
) |sed '/^ *$/d' >> "$DVDAUTHOR_XML"
    yecho "Making a VMGM menu with the following command"
    vmgm_menu_cmd=(todisc -out $OUT_PREFIX  -basedir "$REAL_WORK_DIR" \
    -menu-only -textmenu -keepfiles "${VMGM_OPTS[@]}")
#    vmgm_menu_cmd=(makemenu "${VMGM_TITLES[@]}" -out VMGM -button play  -align middle $NO_ASK $VMGM_MENU_OPTS)
    echo VMGM_ONLY is $VMGM_ONLY
    yecho This is the "${vmgm_menu_cmd[@]}"
    "${vmgm_menu_cmd[@]}"
    for tset in ${!TITLESET_OPTS[@]}; do
      eval  todisc -titleset-mode -keepfiles -basedir "$REAL_WORK_DIR" \
        -tset_num $tset $NO_ASK -out $OUT_PREFIX ${TITLESET_OPTS[tset]}
    done
    echo -e "</dvdauthor>" >> "$DVDAUTHOR_XML"
    yecho "Running dvdauthor to create final DVD structure"
    dvdauthor -x "$DVDAUTHOR_XML" 2>&1 | tee -a "$LOG_FILE"
    if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
        runtime_error "There was a problem creating the DVD structure"
    fi
    yecho "Your new DVD should be in $OUT_DIR"
    cleanup
}

. . .

if $DO_TITLESETS; then
    titleset_mode
    exit
fi