class Jekyll::Renderer

def place_in_layouts(content, payload, info)
  output = content.dup
  layout = layouts[document.data["layout"].to_s]
  validate_layout(layout)
  used = Set.new([layout])
  # Reset the payload layout data to ensure it starts fresh for each page.
  payload["layout"] = nil
  while layout
    output = render_layout(output, layout, info)
    add_regenerator_dependencies(layout)
    if (layout = site.layouts[layout.data["layout"]])
      break if used.include?(layout)
      used << layout
    end
  end
  output
end