Use block helper for markdown blocks

app/helpers/application_helper.rb

@@ -16,4 +16,9 @@ module ApplicationHelper
     image_tag user.avatar_url || default_avatar_url,
       :title => nickname, :alt => nickname, :class => "avatar"
   end
+
+  def markdown(&block)
+    markdown = Redcarpet::Markdown.new(Redcarpet::Render::HTML)
+    markdown.render(capture(&block)).html_safe
+  end
 end

app/views/asciicasts/_asciicast.html.erb

@@ -6,8 +6,7 @@
 
   <% unless (defined? skip_description) && skip_description %>
     <div class="description">
-      <% markdown = Redcarpet::Markdown.new(Redcarpet::Render::HTML) %>
-      <%= markdown.render(asciicast.description.to_s).html_safe %>
+      <%= markdown do %><%= asciicast.description.to_s %><% end %>
     </div>
   <% end %>
 </div>

app/views/home/show.html.erb

@@ -51,8 +51,7 @@
 <div class="hero-unit">
   <h2>Use it</h2>
 
-  <% markdown = Redcarpet::Markdown.new(Redcarpet::Render::HTML) %>
-  <%= markdown.render(<<EOS).html_safe
+  <%= markdown do %>
 To install or upgrade **ascii.io** recorder, open a terminal and run following command:
 
     $ curl -sL get.ascii.io | bash
@@ -71,8 +70,7 @@
 See available commands and options with:
 
     $ asciiio -h
-EOS
-  %>
+  <% end %>
 
   <%# <%= link_to 'See help', manual_path, :class => "btn btn-large" %1> %>
 </div>