===================================================================
RCS file: /cvs/docbook2mdoc/Attic/rules.c,v
retrieving revision 1.23
retrieving revision 1.24
diff -u -p -r1.23 -r1.24
--- docbook2mdoc/Attic/rules.c	2014/10/12 15:08:45	1.23
+++ docbook2mdoc/Attic/rules.c	2014/10/12 15:34:44	1.24
@@ -16,6 +16,9 @@ isattrkey(enum nodeid node, enum attrkey key)
 			break;
 		}
 		return(0);
+	case (ATTRKEY_OPEN):
+	case (ATTRKEY_CLOSE):
+		return(node == NODE_MML_MFENCED);
 	case (ATTRKEY_ID):
 		/* Common to all. */
 		return(1);