case $THIS_SUB_DEPENDS in
    SCM) if [[ "$MDDS_BRANCH" == "stable" ]]; then
           MDDS_BRANCH="scm" &&
           persistent_add MDDS_BRANCH &&
           message "${MESSAGE_COLOR}Non-stable branch of ${SPELL_COLOR}mdds${DEFAULT_COLOR}" \
                   "${MESSAGE_COLOR}requested, upgrading to ${SPELL_COLOR}scm${DEFAULT_COLOR}" \
		   "${MESSAGE_COLOR}branch."
         fi ;;
*) message "${PROBLEM_COLOR}bogus sub_depends: $SPELL $THIS_SUB_DEPENDS${DEFAULT_COLOR}" ;
   return 1;;
esac