Fix YMS bug

j3270/src/main/java/org/pubvm/j3270/J3270App.java

@@ -438,16 +438,37 @@ public class J3270App extends JFrame implements ConnectionListener, ScreenUpdate
             }
         }
 
-        // Configure logging over the absolute root logger
+        // Configure logging for application packages
         Logger globalRoot = Logger.getLogger("");
         for (java.util.logging.Handler h : globalRoot.getHandlers()) {
             globalRoot.removeHandler(h);
         }
-        globalRoot.setLevel(debug ? Level.ALL : Level.WARNING);
+        globalRoot.setLevel(Level.WARNING);
+
         ConsoleHandler handler = new ConsoleHandler();
-        handler.setLevel(Level.ALL);
+        handler.setLevel(debug ? Level.ALL : Level.INFO);
         handler.setFormatter(new SimpleFormatter());
-        globalRoot.addHandler(handler);
+
+        Logger appLogger = Logger.getLogger("org.pubvm.j3270");
+        appLogger.setLevel(Level.ALL);
+        appLogger.addHandler(handler);
+        appLogger.setUseParentHandlers(false);
+
+        Logger libLogger = Logger.getLogger("org.lib3270j");
+        libLogger.setLevel(Level.ALL);
+        libLogger.addHandler(handler);
+        libLogger.setUseParentHandlers(false);
+
+        try {
+            java.util.logging.FileHandler fileHandler = new java.util.logging.FileHandler("j3270.log", 10 * 1024 * 1024, 1, false);
+            fileHandler.setLevel(Level.ALL);
+            fileHandler.setFormatter(new SimpleFormatter());
+            appLogger.addHandler(fileHandler);
+            libLogger.addHandler(fileHandler);
+            log.info("Logging protocol trace to j3270.log");
+        } catch (Exception e) {
+            System.err.println("Could not create j3270.log: " + e.getMessage());
+        }
 
         // Load INI config file if specified
         if (configFile != null) {

j3270/src/main/java/org/pubvm/j3270/ui/TerminalPanel.java

@@ -889,10 +889,20 @@ public class TerminalPanel extends JPanel {
                 if (faIsHigh(currentFA & 0xFF))
                     bold = true;
 
-                // Handle invisible fields (zero intensity)
+                // Handle invisible fields (zero intensity / password fields)
+                // Modern UX: render '*' for typed characters so user sees length/digit count
                 if (faIsZero(currentFA & 0xFF)) {
                     g2.setColor(this.bgColor);
                     g2.fillRect(x, y, cellWidth, cellHeight);
+
+                    char ch = ea.ucs4;
+                    if (ch > 0x20 && ch != 0xFF) {
+                        Font f = bold ? terminalFont.deriveFont(Font.BOLD) : terminalFont;
+                        g2.setFont(f);
+                        g2.setColor(fgColor);
+                        g2.drawString("*", x, y + fontAscent);
+                    }
+
                     if (isCellSelected(row, col)) {
                         g2.setColor(SELECTION_COLOR);
                         g2.fillRect(x, y, cellWidth, cellHeight);