--- a/sat_frontends/jp/base.py	Sun Jan 06 17:36:51 2019 +0100
+++ b/sat_frontends/jp/base.py	Sun Jan 06 17:39:57 2019 +0100
@@ -375,6 +375,14 @@
             if not flags.no_max:
                 pubsub_group.add_argument("-m", "--max-items", dest="max", type=int, default=10,
                     help=_(u"maximum number of items to get ({no_limit} to get all items)".format(no_limit=C.NO_LIMIT)))
+                # TODO: order-by should be a list to handle several levels of ordering
+                #       but this is not yet done in SàT (and not really useful with
+                #       current specifications, as only "creation" and "modification" are
+                #       available)
+                pubsub_group.add_argument(
+                    "-o", "--order-by", choices=[C.ORDER_BY_CREATION,
+                                                 C.ORDER_BY_MODIFICATION],
+                    help=_(u"how items should be ordered"))
 
         if not flags.all_used:
             raise exceptions.InternalError('unknown flags: {flags}'.format(flags=u', '.join(flags.unused)))
@@ -979,6 +987,27 @@
         self.disp(msg.format(failure_), error=True)
         self.host.quit(exit_code)
 
+    def getPubsubExtra(self, extra=None):
+        """Helper method to compute extra data from pubsub arguments
+
+        @param extra(None, dict): base extra dict, or None to generate a new one
+        @return (dict): dict which can be used directly in the bridge for pubsub
+        """
+        if extra is None:
+            extra = {}
+        else:
+            if {C.KEY_ORDER_BY}.intersection(extra.keys()):
+                raise exceptions.InternalError(
+                    u"given extra dict has conflicting keys with pubsub keys")
+        try:
+            order_by = self.args.order_by
+        except AttributeError:
+            pass
+        else:
+            if order_by is not None:
+                extra[C.KEY_ORDER_BY] = self.args.order_by
+        return extra
+
     def add_parser_options(self):
         try:
             subcommands = self.subcommands