core (logging): logging is added to stdout in nodaemon mode (it was already the case in debug mode)

src/core/log_config.py

@@ -187,10 +187,15 @@ class ConfigureTwisted(ConfigureBasic):
         addObserver = self.twisted_log.addObserver
 
         if C.LOG_OPT_OUTPUT_DEFAULT in log.handlers:
-            # default output is already managed, we just add output to stdout if we are in debug mode
-            from twisted.internet import defer
-            if defer.Deferred.debug:
-               addObserver(self.twisted_log.FileLogObserver(sys.stdout).emit)
+            # default output is already managed, we just add output to stdout if we are in debug or nodaemon mode
+
+            # XXX: this hack is to know if we are in debug or nodaemon mode
+            #      any better method welcomed
+            from twisted.scripts import twistd
+            options = twistd.ServerOptions()
+            options.parseOptions()
+            if options.get('nodaemon', False) or options.get('debug', False):
+                addObserver(self.twisted_log.FileLogObserver(sys.stdout).emit)
         else:
             # \\default is not in the output, so we remove current observers
             self.cleared_observers = self.log_publisher.observers