old_contents: 
  from django.http import HttpResponseRedirect
  from django.utils.cache import add_never_cache_headers
  
  
  def frontendediting_request_processor(page, request):
      """
      Sets the frontend editing state in the cookie depending on the
      ``frontend_editing`` GET parameter and the user's permissions.
      """
      if 'frontend_editing' not in request.GET:
          return
  
      response = HttpResponseRedirect(request.path)
  
      if request.user.has_module_perms('page'):
          try:
              enable_fe = int(request.GET['frontend_editing']) > 0
          except ValueError:
              enable_fe = False
  
          if enable_fe:
              response.set_cookie(str('frontend_editing'), enable_fe)
          else:
              response.delete_cookie(str('frontend_editing'))
  
      # Redirect to cleanup URLs
      return response
  
  
  def frontendediting_response_processor(page, request, response):
      # Add never cache headers in case frontend editing is active
      if (hasattr(request, 'COOKIES')
              and request.COOKIES.get('frontend_editing', False)):
  
          if hasattr(response, 'add_post_render_callback'):
              response.add_post_render_callback(add_never_cache_headers)
          else:
              add_never_cache_headers(response)
  
new_contents: 
  from django.http import HttpResponseRedirect
  from django.utils.cache import add_never_cache_headers
  
  
  def frontendediting_request_processor(page, request):
      """
      Sets the frontend editing state in the cookie depending on the
      ``frontend_editing`` GET parameter and the user's permissions.
      """
      if 'frontend_editing' not in request.GET:
          return
  
      response = HttpResponseRedirect(request.path)
  
      if request.user.has_module_perms('page'):
          try:
              enable_fe = int(request.GET['frontend_editing']) > 0
          except ValueError:
              enable_fe = False
  
          if enable_fe:
              response.set_cookie(str('frontend_editing'), enable_fe)
          else:
              response.delete_cookie(str('frontend_editing'))
      else:
          response.delete_cookie(str('frontend_editing'))
  
  
      # Redirect to cleanup URLs
      return response
  
  
  def frontendediting_response_processor(page, request, response):
      # Add never cache headers in case frontend editing is active
      if (hasattr(request, 'COOKIES')
              and request.COOKIES.get('frontend_editing', False)):
  
          if hasattr(response, 'add_post_render_callback'):
              response.add_post_render_callback(add_never_cache_headers)
          else:
              add_never_cache_headers(response)
  
subject: delete cookie in unauth mode