debug 2

docs/conf.py

@@ -276,19 +276,20 @@ def env_get_outdated(app, env, added, changed, removed):
 
     Remove the items listed in `docs_to_remove` from known pages.
     """
-    for doc in list(added):
-        print('reading added:')
-        print(added)
+    to_remove = set()
+    print('reading env.found_docs')
+    print(env.found_docs)
+    for doc in env.found_docs:
         if _to_be_removed(doc):
-            added.remove(doc)
-            removed.add(doc)
-    for doc in list(changed):
-        print('reading changed:')
-        print(changed)
-        if _to_be_removed(doc):
-            changed.remove(doc)
-            removed.add(doc)
-    print('reading removed:')
+            to_remove.add(doc)
+    added.difference_update(to_remove)
+    changed.difference_update(to_remove)
+    removed.update(to_remove)
+    print('reading added')
+    print(added)
+    print('reading changed')
+    print(changed)
+    print('reading removed')
     print(removed)
     return []