old_contents: from django.conf.urls.defaults import patterns, url
  
  from debug_toolbar.urls import _PREFIX
  
  urlpatterns = patterns('debug_toolbar_user_panel.views',
      url(r'^%s/users/$' % _PREFIX, 'content',
          name='debug-userpanel'),
      url(r'^%s/users/login/$' % _PREFIX, 'login_form',
          name='debug-userpanel-login-form'),
      url(r'^%s/users/login/(?P<pk>\d+)$' % _PREFIX, 'login',
          name='debug-userpanel-login'),
  )
  
new_contents: from django.conf.urls.defaults import patterns, url
  
  from debug_toolbar.urls import _PREFIX
  
  urlpatterns = patterns('debug_toolbar_user_panel.views',
      url(r'^%s/users/$' % _PREFIX, 'content',
          name='debug-userpanel'),
      url(r'^%s/users/login/$' % _PREFIX, 'login_form',
          name='debug-userpanel-login-form'),
      url(r'^%s/users/login/(?P<pk>-?\d+)$' % _PREFIX, 'login',
          name='debug-userpanel-login'),
  )
  
subject: Allow negative User ids