- _has_title = title?
- content_for :pre
  - if style == 'source' && (_lang = local_attr :language)
    / NOTE class attribute required for highlight.js and prettify
    / QUESTION should we add a "highlight" class to pre?
    pre.source id=(id unless _has_title) : code data-lang=_lang class="language-#{_lang} prettyprint" =content
  - else
    / QUESTION should we add a class to pre?
    pre id=(id unless _has_title) : code =content
- if _has_title
  figure.listing id=id
    figcaption=title
    - yield_content :pre
- else
  - yield_content :pre