anchor.diff:  -include("fabric.hrl").
   -include_lib("mem3/include/mem3.hrl").
   -include_lib("couch/include/couch_db.hrl").
  +-include_lib("eunit/include/eunit.hrl").
   
   go(DbName, Feed, Options, Callback, Acc0) when Feed == "continuous" orelse
           Feed == "longpoll" ->
  
positive.code:         Reason = <<"Malformed sequence supplied in 'since' parameter.">>,
          {error, {bad_request, Reason}}
      end.
  
negative.code:     do_unpack_seqs(Opaque, DbName);
  
  unpack_seqs(Packed, DbName) ->
      NewPattern = "^\\[[0-9]+,\"(?<opaque>.*)\"\\]$",
      OldPattern = "^([0-9]+-)?(?<opaque>.*)$",
      Options = [{capture, [opaque], binary}],
      Opaque = case re:run(Packed, NewPattern, Options) of
      {match, Match} ->
          Match;
      nomatch ->
          {match, Match} = re:run(Packed, OldPattern, Options),
          Match
      end,
      do_unpack_seqs(Opaque, DbName).
  
  do_unpack_seqs(Opaque, DbName) ->
  