+ assert u'\\' not in youtube_dl._simplify_title(u'abc\\de')
+ assert u'abc' in youtube_dl._simplify_title(u'abc\\de')
+ assert u'de' in youtube_dl._simplify_title(u'abc\\de')
+
+ assert youtube_dl._simplify_title(u'ä') == u'ä'
+ assert youtube_dl._simplify_title(u'кириллица') == u'кириллица'
+
+ # Strip underlines
+ assert youtube_dl._simplify_title(u'\'a_') == u'a'