add rss links to anonymous homepages

app/controllers/list_controller.rb

@@ -11,7 +11,10 @@ class ListController < ApplicationController
       user = list_target_user
       list = TopicQuery.new(user, list_opts).public_send("list_#{filter}")
       list.more_topics_url = url_for(self.public_send "#{filter}_path".to_sym, list_opts.merge(format: 'json', page: next_page))
-      @description = SiteSetting.site_description if [:latest, :hot].include?(filter)
+      if [:latest, :hot].include?(filter)
+        @description = SiteSetting.site_description
+        @rss = filter
+      end
 
       respond(list)
     end

app/views/list/list.erb

@@ -10,6 +10,12 @@
 
 <p><%= t 'powered_by_html' %></p>
 
+<% if @rss %>
+  <% content_for :head do %>
+    <%= auto_discovery_link_tag(:rss, {action: "#{@rss}_feed"}, title: I18n.t("rss_description.#{@rss}")) %>
+  <% end %>
+<% end %>
+
 <% if @category %>
   <% content_for :head do %>
     <%= auto_discovery_link_tag(@category, {action: :category_feed, format: :rss}, title: t('rss_topics_in_category', category: @category.name), type: 'application/rss+xml') %>

config/routes.rb

@@ -197,7 +197,7 @@ Discourse::Application.routes.draw do
   get 'popular/more' => 'list#popular_redirect'
 
   [:latest, :hot].each do |filter|
-    get "#{filter}.rss" => "list##{filter}_feed", format: :rss, as: "#{filter}_feed", filter: filter
+    get "#{filter}.rss" => "list##{filter}_feed", format: :rss
   end
 
   [:latest, :hot, :favorited, :read, :posted, :unread, :new].each do |filter|

spec/controllers/list_controller_spec.rb

@@ -36,6 +36,20 @@ describe ListController do
 
   end
 
+  describe 'RSS feeds' do
+
+    [:latest, :hot].each do |filter|
+
+      it 'renders RSS' do
+        get "#{filter}_feed", format: :rss
+        response.should be_success
+        response.content_type.should == 'application/rss+xml'
+      end
+
+    end
+
+  end
+
   context 'category' do
 
     context 'in a category' do