Avoid inbox duplicates when sending posts to self

outbox.py

@@ -194,6 +194,14 @@ def postMessageToOutbox(messageJson: {}, postToNickname: str,
             for boxNameIndex in indexes:
                 if boxNameIndex == 'inbox' and outboxName == 'tlblogs':
                     continue
+                selfActor = \
+                    httpPrefix + '://' + domainFull + \
+                    '/users/' + postToNickname
+                # avoid duplicates of the message if already going
+                # back to the inbox of the same account
+                if selfActor not in messageJson['to']:
+                    # show sent post within the inbox,
+                    # as is the typical convention
                     inboxUpdateIndex(boxNameIndex, baseDir,
                                      postToNickname + '@' + domain,
                                      savedFilename, debug)