old_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
  	# ex: /wagtailvisualdiff/
  	url(r'^$', views.index, name='index'),
  	# ex: /wagtailvisualdiff/1234/to_current/
  	url(r'^(?P<revision_id>[0-9]+)/to_current/$', views.visual_diff_current, name='diff'),
  	# ex: /wagtailvisualdiff/1234/to_previous/
  	url(r'^(?P<revision_id>[0-9]+)/to_previous/$', views.visual_diff_previous, name='diff'),
  	# ex: /wagtailvisualdiff/1234/for_sc
  	url(r'^(?P<revision_id>[0-9]+)/for_sc/$', views.visual_diff_only, name='diff_only'),
  ]
new_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
  	# ex: /wagtailvisualdiff/
  	url(r'^$', views.index, name='index'),
  	# ex: /wagtailvisualdiff/1234/to_current/
  	url(r'^(?P<revision_id>[0-9]+)/to_current/$', views.visual_diff_current, name='diff_current'),
  	# ex: /wagtailvisualdiff/1234/to_previous/
  	url(r'^(?P<revision_id>[0-9]+)/to_previous/$', views.visual_diff_previous, name='diff_previous'),
  	# ex: /wagtailvisualdiff/1234/for_sc
  	url(r'^(?P<revision_id>[0-9]+)/for_sc/$', views.visual_diff_only, name='diff_only'),
  ]
subject: Fix name problem