Custom filter to enable smart quotes in RDiscount

Rules

@@ -16,7 +16,7 @@ compile %r{/(?:technical|personal|)articles/(page/|)} do
 end
 
 compile %r(/\d{4}/*) do
-  filter :rdiscount
+  filter :smart_rdiscount
   layout 'article'
   layout 'default'
 end
@@ -30,7 +30,7 @@ compile %r{(?:/robots/|/sitemap)} do
 end
 
 compile '*' do
-  filter :rdiscount
+  filter :smart_rdiscount
   layout 'default'
 end
 

lib/smart_rdiscount.rb

@@ -0,0 +1,13 @@
+module WezM::Filters
+  class SmartRDiscount < Nanoc3::Filter
+    def run(content, params={})
+      require 'rdiscount'
+
+      markdown = ::RDiscount.new(content)
+      markdown.smart = true
+      markdown.to_html
+    end
+  end
+end
+
+Nanoc3::Filter.register '::WezM::Filters::SmartRDiscount', :smart_rdiscount