Tidy extraction of tags from rss feeds

newswire.py

@@ -88,17 +88,32 @@ def addNewswireDictEntry(baseDir: str, domain: str,
     """Update the newswire dictionary
     """
     allText = title + ' ' + description
+
+    # check that none of the text is filtered against
     if isFiltered(baseDir, 'news', domain, allText):
         return
-    if not tags:
+
-        tags = getNewswireTags(allText, maxTags)
+    if tags is None:
+        tags = []
+
+    # extract hashtags from the text of the feed post
+    postTags = getNewswireTags(allText, maxTags)
+
+    # combine the tags into a single list
+    for tag in postTags:
+        if tag not in tags:
+            tags.append(tag)
+
+    # check that no tags are blocked
     newswireItemBlocked = False
-    if tags:
     for tag in tags:
         if isBlockedHashtag(baseDir, tag.replace('#', '')):
             newswireItemBlocked = True
             break
-    if not newswireItemBlocked:
+
+    if newswireItemBlocked:
+        return
+
     newswire[dateStr] = [
         title,
         link,