anchor.diff:  get_from_env(EnvName) ->
       case os:getenv(EnvName) of
           false ->
  -            false;
  +            env_not_found;
           Value ->
               parse_value(Value)
       end.
  
positive.code: get(Name, Default) when is_atom(Name) ->
      EnvName = "AMOC_" ++ erlang:atom_to_list(Name),
      case get_from_env(EnvName) of
          false ->
              application:get_env(amoc, Name, Default);
          Value ->
              Value
  
negative.code: get(Name, Default) when is_list(Name) ->
      EnvName = "AMOC_" ++ Name,
      case get_from_env(EnvName) of
          env_not_found ->
              Default;
          Value ->
              Value
  