anchor.diff:              - var classname = 'sui-btn'
               if s
                 - classname += ' btn-' + s
  -            if r  
  +            if r[0] 
                 - classname += ' btn-' + r[0]
               | <a href='javascript:void(0);' class='#{classname}'>#{r[1]}</a>
               | 
  
positive.code:       div.bs-docs-example
          each v in ROLES
            - var classname = 'sui-btn'
            if v
              - classname += ' btn-' + v[0]
            |<a href='javascript:void(0);' class='#{classname}'><i class='sui-icon icon-pencil'></i>#{v[1]}</a>
            | 
  
negative.code:       div.bs-docs-example
          each v in ROLES
            - var classname = 'sui-btn btn-block btn-xlarge'
            if v[0]
              - classname += ' btn-' + v[0]
            |<a href='javascript:void(0);' class='#{classname}'>#{v[1]}</a>
            | 
  