class RDoc::Generator::Darkfish

def excerpt(content)
  text = case content
  when RDoc::Comment
    content.text
  when RDoc::Markup::Document
    # This case is for page files that are not markdown nor rdoc
    # We convert them to markdown for now as it's easier to extract the text
    formatter = RDoc::Markup::ToMarkdown.new
    formatter.start_accepting
    formatter.accept_document(content)
    formatter.end_accepting
  else
    content
  end
  # Match from a capital letter to the first period, discarding any links, so
  # that we don't end up matching badges in the README
  first_paragraph_match = text.match(/[A-Z][^\.:\/]+\./)
  return text[0...150].gsub(/\n/, " ").squeeze(" ") unless first_paragraph_match
  extracted_text = first_paragraph_match[0]
  second_paragraph = first_paragraph_match.post_match.match(/[A-Z][^\.:\/]+\./)
  extracted_text << " " << second_paragraph[0] if second_paragraph
  extracted_text[0...150].gsub(/\n/, " ").squeeze(" ")
end