anchor.diff:  
   e(N,L) when is_list(L) -> lists:nth(N,L);
   e(N,T) when is_tuple(T)-> element(N,T).
  +
  +-endif.
  
positive.code:   length(read_file(Filename)).
  
  get_line_seg(Filename,Line,Seg) ->
    e(Seg,e(Line,read_file(Filename))).
  
  read_file(Filename) ->
    {ok,C} = file:read_file(Filename),
  
negative.code: -module('redbug_eunit').
  -author('mats cronqvist').
  
  -ifdef(TEST).
  -include_lib("eunit/include/eunit.hrl").
  
  t_0_test() ->
  