anchor.diff:          _:_ ->
             InvalidEntryPoint =
               "The entry point ~w:~w/~w is not valid. Make sure you have"
  -            " specified the correct module ('-m') and test function ('-t')",
  +            " specified the correct module ('-m') and test function ('-t').",
             opt_error(InvalidEntryPoint, [M,F,length(B)])
         end;
       _ ->
  
positive.code: -spec file_error(atom(), term()) -> no_return().
  
  file_error(Key, Value) ->
    opt_error("could not open '--~w' file ~s for writing", [Key, Value]).
  
  compile_and_load(Files, Options) ->
    Modules = proplists:get_value(modules, Options),
  
negative.code:       end;
      module ->
        case proplists:is_defined(module, Rest) of
          true -> opt_error("Multiple instances of '--module'");
          false -> ok
        end,
        case proplists:get_value(test, Rest, 1) of
          Name when is_atom(Name) ->
            NewRest = proplists:delete(test, Rest),
            finalize(NewRest, [{entry_point, {Value, Name, []}}|Acc]);
          _ -> opt_error("The name of the test function is missing.")
        end;
      output ->
        case file:open(Value, [write]) of
  