class Kramdown::Parser::Html::ElementConverter

def convert_em(el)
  text = +''
  extract_text(el, text)
  if text =~ /\A\s/ || text =~ /\s\z/
    process_html_element(el, false)
  else
    set_basics(el, EMPHASIS_TYPE_MAP[el.value])
    process_children(el)
  end
end