Allow slugs in URLs.

lms/djangoapps/django_comment_client/forum/urls.py

@@ -4,7 +4,7 @@ import django_comment_client.forum.views
 urlpatterns = patterns('django_comment_client.forum.views',
     url(r'users/(?P<user_id>\w+)/followed$', 'followed_threads', name='followed_threads'),
     url(r'users/(?P<user_id>\w+)$', 'user_profile', name='user_profile'),
-    url(r'(?P<discussion_id>[\w\-]+)/threads/(?P<thread_id>\w+)$', 'single_thread', name='single_thread'),
+    url(r'(?P<discussion_id>[\w\-]+)/threads/(?P<thread_id>[-\w]+)$', 'single_thread', name='single_thread'),
     url(r'(?P<discussion_id>[\w\-]+)/inline$', 'inline_discussion', name='inline_discussion'),
     url(r'', 'forum_form_discussion', name='forum_form_discussion'),
 )