Add {{reflist-talk}} to a case if it has <ref>s and no reflist.

tasks/drn_clerkbot.py

@@ -315,6 +315,7 @@ class DRNClerkBot(Task):
         elif case.status in [self.STATUS_RESOLVED, self.STATUS_CLOSED,
                              self.STATUS_FAILED]:
             self.clerk_closed_case(case, signatures)
+        self.add_missing_reflist(case)
         self.save_case_updates(conn, case, volunteers, signatures, storedsigs)
         return notices
 
@@ -511,6 +512,14 @@ class DRNClerkBot(Task):
         self.logger.debug(log.format(case.id, len(notices), template))
         return notices
 
+    def add_missing_reflist(self, case):
+        """Add {{reflist-talk}} to a case if it has <ref>s and no reflist."""
+        code = mw_parse(case.body)
+        if code.filter_tags(matches=lambda t: t.name.lower() == "ref"):
+            if any(s in case.body.lower() for s in ("reflist", "<references")):
+                return
+            case.body += "\n===References===\n{{reflist-talk|close=1}}\n"
+
     def save_case_updates(self, conn, case, volunteers, sigs, storedsigs):
         """Save any updates made to a case and signatures in the database."""
         if case.status != case.original_status: