# File lib/rcodetools/xmpfilter.rb, line 164
  def annotated_multi_line(line, expression, indent, runtime_data, idx)
    pretty = (runtime_data.results[idx].map{|x| x[1]} || []).join(", ")
    first, *rest = pretty.to_a
    rest.inject("#{expression}\n#{indent}# => #{first || "\n"}") {|s, l| s << "#{indent}#    " << l }
  end