anchor.diff:  
   info(help, shell) ->
       ?CONSOLE(
  -       "Start a shell with project and deps preloaded similar to~n"
  -       "'erl -pa ebin -pa deps/*/ebin'.~n",
  -       []).
  +        "Start a shell with project and deps preloaded similar to~n"
  +        "'erl -pa ebin -pa deps/*/ebin'.~n",
  +        []
  +    ).
   
   remove_error_handler(0) ->
       ?WARN("Unable to remove simple error_logger handler~n", []);
  
positive.code: 
  shell(_Config, _AppFile) ->
      true = code:add_pathz(rebar_utils:ebin_dir()),
      %% terminate the current user
      ok = supervisor:terminate_child(kernel_sup, user),
      %% start a new shell (this also starts a new user under the correct group)
      user_drv:start(),
      %% enable error_logger's tty output
      ok = error_logger:swap_handler(tty),
      %% disable the simple error_logger (which may have been added multiple
  
negative.code:     case gen_event:delete_handler(error_logger, error_logger, []) of
          {error, module_not_found} -> ok;
          {error_logger, _} -> remove_error_handler(N-1)
      end.
  
  %% Timeout is a period to wait before giving up
  wait_until_user_started(0) ->
      ?ABORT("Timeout exceeded waiting for `user` to register itself~n", []),
      erlang:error(timeout);
  wait_until_user_started(Timeout) ->
      case whereis(user) of
          %% if user is not yet registered wait a tenth of a second and try again
          undefined -> timer:sleep(100), wait_until_user_started(Timeout - 100);
          _ -> ok
      end.