anchor.diff:  %% Runtime API
   -export([format_error/1, get_attr/2]).
   %% Runtime built-in decoders/encoders
  --export([dec_int/1, dec_int/3, dec_enum/2,
  -         enc_int/1, enc_enum/1, not_empty/1]).
  +-export([dec_int/1, dec_int/3, dec_enum/2, enc_int/1, enc_enum/1, not_empty/1,
  +	enc_xmlns_attrs/2, choose_top_xmlns/3]).
   
   -include("fxml_gen.hrl").
   -include("fxml.hrl").
  
positive.code: 					  ?AST(__IgnoreEls),
  					  ?AST(_els)|CDataVars ++ ElemVars] ++
  					     [erl_syntax:list(
  						[?AST(decode(_el))],
  						label_to_var('$_els'))])]),
  				    erl_syntax:clause(
  				      [?AST(false)],
  
negative.code:                           {enc_int, 1} -> true;
                            {enc_enum, 1} -> true;
                            {get_attr, 2} -> true;
  			  {choose_top_xmlns, 3} -> true;
  			  {enc_xmlns_attrs, 2} -> true;
                            _ -> false
                        end
                end, AbsCode);
  