Add feature to add rel param to rss feedss if requested

docs/settings.rst

@@ -1008,6 +1008,11 @@ the ``TAG_FEED_ATOM`` and ``TAG_FEED_RSS`` settings:
    to ``False``, the full content will be included instead. This setting
    doesn't affect Atom feeds, only RSS ones.
 
+.. data:: FEED_APPEND_REL = False
+
+   If set to ``True``, ``?rel=rss`` will be appended to links in generated
+   feeds for the purpose of referrer tracking.
+
 If you don't want to generate some or any of these feeds, set the above
 variables to ``None``.
 

pelican/settings.py

@@ -48,6 +48,7 @@ DEFAULT_CONFIG = {
     "TRANSLATION_FEED_ATOM": "feeds/all-{lang}.atom.xml",
     "FEED_MAX_ITEMS": 100,
     "RSS_FEED_SUMMARY_ONLY": True,
+    "FEED_APPEND_REL": False,
     "SITEURL": "",
     "SITENAME": "A Pelican Blog",
     "DISPLAY_PAGES_ON_MENU": True,

pelican/writers.py

@@ -53,6 +53,9 @@ class Writer:
         title = Markup(item.title).striptags()
         link = self.urljoiner(self.site_url, item.url)
 
+        if self.settings["FEED_APPEND_REL"]:
+            link = link + "?rel=rss"
+
         if isinstance(feed, Rss201rev2Feed):
             # RSS feeds use a single tag called 'description' for both the full
             # content and the summary