anchor.diff:                      LastModified = httpd_util:rfc1123_date(FileInfo#file_info.mtime),
                       case get_header_value("if-modified-since") of
                           LastModified ->
  -                            respond({304, [], ""});
  +                            respond({304, ExtraHeaders, ""});
                           _ ->
                               case file:open(File, [raw, binary]) of
                                   {ok, IoDevice} ->
                                       ContentType = mochiweb_util:guess_mime(File),
  -                                    Res = ok({ContentType, [{"last-modified", LastModified}], {file, IoDevice}}),
  +                                    Res = ok({ContentType,
  +                                              [{"last-modified", LastModified}
  +                                               | ExtraHeaders],
  +                                              {file, IoDevice}}),
                                       file:close(IoDevice),
                                       Res;
                                   _ ->
  -                                    not_found()
  +                                    not_found(ExtraHeaders)
                               end
                       end;
                   {error, _} ->
  -                    not_found()
  +                    not_found(ExtraHeaders)
               end
       end.
   
  
positive.code: %% @spec serve_file(Path, DocRoot) -> Response
  %% @doc Serve a file relative to DocRoot.
  serve_file(Path, DocRoot) ->
      case mochiweb_util:safe_relative_path(Path) of
          undefined ->
              not_found();
  
negative.code: -export([send/1, recv/1, recv/2, recv_body/0, recv_body/1]).
  -export([start_response/1, start_response_length/1, start_raw_response/1]).
  -export([respond/1, ok/1]).
  -export([not_found/0, not_found/1]).
  -export([parse_post/0, parse_qs/0]).
  -export([should_close/0, cleanup/0]).
  -export([parse_cookie/0, get_cookie_value/1]).
  -export([serve_file/2, serve_file/3]).
  -export([test/0]).
  
  -define(SAVE_QS, mochiweb_request_qs).
  