fixtures/test-app/source/code_html.html.erb
<h1>Ruby</h1>
<% code('ruby') do %>
def foo(bar)
puts "baz"
end
<% end %>
<h1>Whatever</h1>
<% code do %>
This is some code
<% end %>
<h1>Options</h1>
<% code('ruby', {:line_numbers => true, :start_line => 7}) do %>
def foo(bar)
puts "baz"
end
<% end %>