class Kramdown::Converter::Latex

def convert_codeblock(el, _opts)
  show_whitespace = el.attr['class'].to_s =~ /\bshow-whitespaces\b/
  lang = extract_code_language(el.attr)
  if @options[:syntax_highlighter] == :minted &&
      (highlighted_code = highlight_code(el.value, lang, :block))
    @data[:packages] << 'minted'
    "#{latex_link_target(el)}#{highlighted_code}\n"
  elsif show_whitespace || lang
    options = []
    options << (show_whitespace ? "showspaces=true,showtabs=true" : "showspaces=false,showtabs=false")
    options << "language=#{lang}" if lang
    options << "basicstyle=\\ttfamily\\footnotesize,columns=fixed,frame=tlbr"
    id = el.attr['id']
    options << "label=#{id}" if id
    attrs = attribute_list(el)
    "#{latex_link_target(el)}\\begin{lstlisting}[#{options.join(',')}]\n" \
      "#{el.value}\n\\end{lstlisting}#{attrs}\n"
  else
    "#{latex_link_target(el)}\\begin{verbatim}#{el.value}\\end{verbatim}\n"
  end
end