Начинаем переход на SLF4j+Log4j2

src/lwjake2/sys/Sys.java

@@ -22,6 +22,8 @@ import lwjake2.Defines;
 import lwjake2.Globals;
 import lwjake2.client.CL;
 import lwjake2.qcommon.Com;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.FilenameFilter;
@@ -32,6 +34,7 @@ import java.util.regex.PatternSyntaxException;
  * Sys
  */
 public final class Sys extends Defines {
+    private static final Logger logger = LoggerFactory.getLogger(Sys.class);
 
     public static void Error(String error) {
 
@@ -230,7 +233,14 @@ public final class Sys extends Defines {
         if (Globals.nostdout != null && Globals.nostdout.value != 0)
             return;
 
-        System.out.print(msg);
+        while (msg.startsWith("\n")) {
+            msg = msg.substring(1);
+        }
+        while (msg.endsWith("\n")) {
+            msg = msg.substring(0, msg.lastIndexOf("\n"));
+        }
+
+        logger.info(msg);
     }
 
 }