if [ $# != 0 ]; then badusage 'no positional arguments allowed'; fi
case "$quilt_mode" in
- 'linear'|'auto'|'smash'|'nofix'|'gbp'|'dpm'|'unapplied'|'baredebian'|'baredebian+tarball')
+ 'linear'|'auto'|'smash'|'nofix'|'gbp'|'dpm'|'unapplied'|'baredebian'|'baredebian+tarball'|'')
;;
'baredebian+git')
quilt_mode="baredebian"