anchor.diff:      false;
   is_prefix(_, _) ->
       false.
  -
  
positive.code: %% @doc Converts characters in a string ro lower case.
  %% @end
  %%------------------------------------------------------------------------------
  -spec to_lower(string()) -> string().
  to_lower(String) when is_list(String) ->
      [char_to_lower(X) || X <- String].
  
  bin_to_lower(Bin) ->
      << <<(char_to_lower(B))>> || <<B>> <= Bin >>.
  
  %%------------------------------------------------------------------------------
  %% @doc Compares header values to pre-defined values
  
negative.code:             Host
      end.
  
  is_prefix([<<>>], _) ->
      true;
  is_prefix([H | T1], [H | T2]) ->
  