anchor.diff:      Output.
   
   content2bin(Content, _) when is_binary(Content) ->
  -    ecrepo_lib:quote(Content);
  +    ?Q(Content);
   content2bin(Content, _) when is_number(Content) ->
       ?N(Content);
   content2bin(Content, Indent) ->
  
positive.code: -define(HEADER, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n").
  
  -define(N(Arg), ecrepo_xml:format_to_bin("~b", [Arg])).
  
  document(RootElement) ->
      Output = elem(RootElement, 0),
  
negative.code:             ?N(Value);
  
          is_binary(Value) ->
              ?Q(Value);
  
          true ->
              throw({badarg, Value})
  