id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
17492	url backreferencing can not be reversed.	Nate Bragg	Nate Bragg	"If a url pattern uses backreferencing (i.e., ""(?P=previously_named_group)""), the reversal fails, throwing up ""Non-reversible reg-exp portion"" ValueError.  The problem occurs in django.utils.regex_helper.normalize which gives up on any character following a ""(?P"" other than ""<""."	Bug	closed	Core (Other)	1.3	Normal	fixed			Unreviewed	1	0	0	0	0	0