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
25617	Disallow usernames that differ only in case in UserCreationForm	Tim Graham	Paul Schilling	"Most applications don't treat user names as case sensitive. While we can't treat usernames as case-insensitive everywhere in Django due to backwards compatibility (#2273), by using `username__iexact` when checking for uniqueness of new usernames in `UserCreationForm`, we can at least prevent the creation of new usernames that differ only in case from an existing one. This protection won't cover creating a user in the shell or through the `createsuperuser` management command, but I don't think this is critical.

This wouldn't affect any usernames that already exist, and users will still need to login with the same case that they register with."	Cleanup/optimization	closed	contrib.auth	dev	Normal	fixed		zachborboa@… nmundar@… berker.peksag@… Kye Russell René Fleschenberg	Ready for checkin	1	0	0	0	0	0