case $THIS_SUB_DEPENDS in
      GRAPHITE2) if [[ is_depends_enabled $SPELL graphite2 ]]; then return 0; fi ;;
             FT) is_depends_enabled $SPELL freetype2 && return 0 ;;
        *) message "${PROBLEM_COLOR}bogus sub_depends: $SPELL $THIS_SUB_DEPENDS${DEFAULT_COLOR}" ;
   return 1;;
esac