anchor.diff:  do([], State) ->
       {ok, State};
   do([ProviderName | Rest], State) ->
  -    ?DEBUG("Provider: ~p", [ProviderName]),
  +    ?DEBUG("Running provider: ~p", [friendly_provider(ProviderName)]),
       %% Special providers like 'as', 'do' or some hooks may be passed
       %% as a tuple {Namespace, Name}, otherwise not. Handle them
       %% on a per-need basis.
  
positive.code:     io_lib:format("Undefined command ~ts in namespace ~ts", [Name, Namespace]);
  format_error({bad_provider_namespace, Name}) ->
      io_lib:format("Undefined command ~ts", [Name]).
  
negative.code:     Namespace = rebar_state:namespace(State),
      TargetProviders = providers:get_target_providers(Command, Providers, Namespace),
      CommandProvider = providers:get_provider(Command, Providers, Namespace),
      ?DEBUG("Expanded command sequence to be run: ~w",
             [[friendly_provider(P) || P <- TargetProviders]]),
      case CommandProvider of
          not_found when Command =/= do ->
              case Namespace of
  