From 10738f70113c327f70882ff43f249142124165b0 Mon Sep 17 00:00:00 2001
From: UlrichB22 <97119703+UlrichB22@users.noreply.github.com>
Date: Tue, 19 Nov 2024 14:16:35 +0100
Subject: [PATCH] page_trail: add type checks

---
 src/moin/user.py | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/moin/user.py b/src/moin/user.py
index f146b4f4d..a59f5da4d 100644
--- a/src/moin/user.py
+++ b/src/moin/user.py
@@ -762,8 +762,19 @@ def get_trail(self):
         trail_session = session.get("trail", [])
         trail = []
         for entry in trail_session:
-            aliases = [CompositeName(*alias) for alias in entry[1]]
-            trail.append((entry[0], aliases))
+            if isinstance(entry, tuple) and len(entry) == 2:
+                item_name = entry[0]
+                try:
+                    aliases = [CompositeName(*alias) for alias in entry[1]]
+                except TypeError:
+                    aliases = []
+            elif isinstance(entry, str):  # old style
+                item_name = entry
+                aliases = []
+            else:
+                logging.warning(f"Invalid page trail entry, type is {type(entry)}.")
+                continue
+            trail.append((item_name, aliases))
         return trail
 
     # Other ------------------------------------------------------------------