From c52651723383c22b74b7c074b01e0d9dc19cdfb7 Mon Sep 17 00:00:00 2001
From: Pierre-Yves Chibon <pingou@pingoured.fr>
Date: Aug 31 2015 13:22:27 +0000
Subject: Use list.remove() instead of relying on set()


---

diff --git a/pagure/lib/__init__.py b/pagure/lib/__init__.py
index b1c24c5..bae94d3 100644
--- a/pagure/lib/__init__.py
+++ b/pagure/lib/__init__.py
@@ -2396,7 +2396,9 @@ def clean_input(text, ignore=None):
         'col', 'tbody', 'pre', 'img', 'hr',
     ]
     if ignore:
-        tags = list(set(tags).difference(set(ignore)))
+        for tag in ignore:
+            if tag in tags:
+                tags.remove(tag)
 
     return bleach.clean(text, tags=tags, attributes=attrs)