anchor.diff:           embedded_start_conf/1, embedded_start_conf/2,
            embedded_start_conf/3, embedded_start_conf/4]).
   
  --export([set_status_code/1, reformat_header/1,
  +-export([set_status_code/1, reformat_header/1, reformat_header/2,
            reformat_request/1, reformat_response/1, reformat_url/1]).
   
   -export([set_trace/1,
  
positive.code: 
  %% returns [ Header1, Header2 .....]
  reformat_header(H) ->
      lists:zf(fun({Hname, Str}) ->
                       I =  lists:flatten(io_lib:format("~s: ~s",[Hname, Str])),
                       {true, I};
                  (undefined) ->
                       false
  
negative.code:             ) ++
          lists:map(
            fun({http_header,_,K,_,V}) ->
                    FormatFun(K,V)
            end, H#headers.other).
  
  
  