suan

# output

> gh = Redcarpet::Render::GithubStyleTitles.new
> puts Redcarpet::Markdown.new(gh).render "test\n\n# test 1\n\n# test 2\n\n# test 1\n\n# test 1"

=> 

<a name="test-1" class="anchor" href="#test-1"><span class="anchor-icon"></span></a><h1 id="test-1">test 1</h1>

<a name="test-2" class="anchor" href="#test-2"><span class="anchor-icon"></span></a><h1 id="test-2">test 2</h1>