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-rw-r--r--lib/metadata/proteanos.sh4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/metadata/proteanos.sh b/lib/metadata/proteanos.sh
index 493f30a..830b205 100644
--- a/lib/metadata/proteanos.sh
+++ b/lib/metadata/proteanos.sh
@@ -17,8 +17,8 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
-[ -n "${_OB_METADATA_PROTEANOS_SM}" ] && return 0
-_OB_METADATA_PROTEANOS_SM='true'
+[ x"${_OB_METADATA_PROTEANOS_SM+set}" = x'set' ] && return 0
+_OB_METADATA_PROTEANOS_SM=1
_OB_NAME_RE_PROTEANOS='^[a-z0-9][a-z0-9+.-]+$'
_OB_VERSION_RE_PROTEANOS='^'