anchor.diff:        Args     :: list(),
         Result   :: ok | {error, inet:posix()}.
   
  -error_msg(Format) ->
  -    log(default, #priority{log_level=error}, Format, []).
  +error_msg(Message) ->
  +    log(default, #priority{log_level=error}, Message, []).
   
   error_msg(Format, Args) ->
       log(default, #priority{log_level=error}, Format, Args).
  
positive.code: is_loglevel_valid(_)         -> false.
  
  %%====================================================================
  -spec log(Format, Arg) -> Result when
        Format          :: string(),
        Arg             :: list(),
  
negative.code:       Args     :: list(),
        Result   :: ok | {error, inet:posix()}.
  
  warning_msg(Message) ->
      log(default, #priority{log_level=warning}, Message, []).
  
  warning_msg(Format, Args) ->
      log(default, #priority{log_level=warning}, Format, Args).
  