From 2f0b7be41515ee64ed0b1e485c7ba40292b72fca Mon Sep 17 00:00:00 2001
From: Michael Scherer <misc@redhat.com>
Date: Aug 30 2024 07:46:51 +0000
Subject: Do not use '+' with frozenset and list


Fix exception:
  TypeError: unsupported operand type(s) for +: 'frozenset' and 'list'

---

diff --git a/fedocal/__init__.py b/fedocal/__init__.py
index 630c03d..6a7fe8a 100644
--- a/fedocal/__init__.py
+++ b/fedocal/__init__.py
@@ -195,10 +195,10 @@ def sanitize(text):
     """ Sanitize a given text from any not-allowed html using bleach. """
     return bleach.clean(
         text,
-        tags=bleach.ALLOWED_TAGS + [
+        tags=bleach.ALLOWED_TAGS.union([
              'p', 'br', 'div', 'h1', 'h2', 'h3', 'table', 'td', 'tr',
              'th', 'col', 'tbody', 'pre', 'img',
-            ],
+            ]),
         attributes=bleach.ALLOWED_ATTRIBUTES
     )