[ -n "$DEBIAN_FRONTEND" ] || DEBIAN_FRONTEND='noninteractive'
[ -n "$DEBOOTSTRAP" ] || DEBOOTSTRAP='debootstrap'
[ -n "$DEFAULT_LOCALES" ] || DEFAULT_LOCALES='en_US.UTF-8'
+[ -n "$DEFAULT_LANGUAGE" ] || DEFAULT_LANGUAGE='en_US:en'
[ -n "$EXTRAPACKAGES" ] || EXTRAPACKAGES='yes'
[ -n "$FALLBACK_MIRROR" ] || FALLBACK_MIRROR='http://http.debian.net/debian'
[ -n "$FORCE" ] || FORCE=''
[ -n "$DEBIAN_FRONTEND" ] && echo "DEBIAN_FRONTEND=\"$DEBIAN_FRONTEND\"" >> $CHROOT_VARIABLES
[ -n "$DEBOOTSTRAP" ] && echo "DEBOOTSTRAP=\"$DEBOOTSTRAP\"" >> $CHROOT_VARIABLES
[ -n "$DEFAULT_LOCALES" ] && echo "DEFAULT_LOCALES=\"$DEFAULT_LOCALES\"" >> $CHROOT_VARIABLES
+ [ -n "$DEFAULT_LANGUAGE" ] && echo "DEFAULT_LANGUAGE=\"$DEFAULT_LANGUAGE\"" >> $CHROOT_VARIABLES
[ -n "$EXTRAPACKAGES" ] && echo "EXTRAPACKAGES=\"$EXTRAPACKAGES\"" >> $CHROOT_VARIABLES
[ -n "$FALLBACK_MIRROR" ] && echo "FALLBACK_MIRROR=\"$FALLBACK_MIRROR\"" >> $CHROOT_VARIABLES
[ -n "$FORCE" ] && echo "FORCE=\"$FORCE\"" >> $CHROOT_VARIABLES