diff --git a/java/src/com/android/inputmethod/keyboard/Key.java b/java/src/com/android/inputmethod/keyboard/Key.java
index b2b68f0..ced7638 100644
--- a/java/src/com/android/inputmethod/keyboard/Key.java
+++ b/java/src/com/android/inputmethod/keyboard/Key.java
@@ -22,6 +22,7 @@
 import android.graphics.Typeface;
 import android.graphics.drawable.Drawable;
 import android.text.TextUtils;
+import android.util.Log;
 import android.util.Xml;
 
 import com.android.inputmethod.keyboard.internal.KeyStyles;
@@ -42,6 +43,8 @@
  * Class for describing the position and characteristics of a single key in the keyboard.
  */
 public class Key {
+    private static final String TAG = Key.class.getSimpleName();
+
     /**
      * The key code (unicode or custom code) that this key generates.
      */
@@ -284,7 +287,11 @@
         // specified.
         final int code = style.getInt(keyAttr, R.styleable.Keyboard_Key_code,
                 Keyboard.CODE_UNSPECIFIED);
-        if (code == Keyboard.CODE_UNSPECIFIED && !TextUtils.isEmpty(mLabel)) {
+        if (code == Keyboard.CODE_UNSPECIFIED && mOutputText == null
+                && !TextUtils.isEmpty(mLabel)) {
+            if (mLabel.length() != 1) {
+                Log.w(TAG, "Label is not a single letter: label=" + mLabel);
+            }
             final int firstChar = mLabel.charAt(0);
             mCode = getRtlParenthesisCode(firstChar, params.mIsRtlKeyboard);
         } else if (code != Keyboard.CODE_UNSPECIFIED) {
diff --git a/java/src/com/android/inputmethod/keyboard/KeyDetector.java b/java/src/com/android/inputmethod/keyboard/KeyDetector.java
index 2a6e0a2..8e325b6 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyDetector.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyDetector.java
@@ -222,13 +222,7 @@
     }
 
     public static String printableCode(Key key) {
-        return key != null ? printableCode(key.mCode) : "none";
-    }
-
-    public static String printableCode(int primaryCode) {
-        if (primaryCode < 0) return String.format("%4d", primaryCode);
-        if (primaryCode < 0x100) return String.format("\\u%02x", primaryCode);
-        return String.format("\\u04x", primaryCode);
+        return key != null ? Keyboard.printableCode(key.mCode) : "none";
     }
 
     public static String printableCodes(int[] codes) {
diff --git a/java/src/com/android/inputmethod/keyboard/Keyboard.java b/java/src/com/android/inputmethod/keyboard/Keyboard.java
index f234507..e267aa6 100644
--- a/java/src/com/android/inputmethod/keyboard/Keyboard.java
+++ b/java/src/com/android/inputmethod/keyboard/Keyboard.java
@@ -18,6 +18,7 @@
 
 import android.graphics.drawable.Drawable;
 import android.text.TextUtils;
+import android.util.Log;
 
 import com.android.inputmethod.keyboard.internal.KeyboardIconsSet;
 import com.android.inputmethod.keyboard.internal.KeyboardParams;
@@ -48,6 +49,8 @@
  * </pre>
  */
 public class Keyboard {
+    private static final String TAG = Keyboard.class.getSimpleName();
+
     /** Some common keys code.  These should be aligned with values/keycodes.xml */
     public static final int CODE_ENTER = '\n';
     public static final int CODE_TAB = '\t';
@@ -241,4 +244,20 @@
         default: return null;
         }
     }
+
+    public static String printableCode(int code) {
+        switch (code) {
+        case CODE_SHIFT: return "shift";
+        case CODE_SWITCH_ALPHA_SYMBOL: return "symbol";
+        case CODE_CAPSLOCK: return "capslock";
+        case CODE_DELETE: return "delete";
+        case CODE_SHORTCUT: return "shortcut";
+        case CODE_DUMMY: return "dummy";
+        case CODE_UNSPECIFIED: return "unspec";
+        default:
+            if (code < 0) Log.w(TAG, "Unknow negative key code=" + code);
+            if (code < 0x100) return String.format("\\u%02x", code);
+            return String.format("\\u04x", code);
+        }
+    }
 }
diff --git a/java/src/com/android/inputmethod/keyboard/PointerTracker.java b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
index 9e0c5ce..3a07cdf 100644
--- a/java/src/com/android/inputmethod/keyboard/PointerTracker.java
+++ b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
@@ -239,7 +239,7 @@
     private boolean callListenerOnPressAndCheckKeyboardLayoutChange(Key key, boolean withSliding) {
         final boolean ignoreModifierKey = mIgnoreModifierKey && key.isModifier();
         if (DEBUG_LISTENER) {
-            Log.d(TAG, "onPress    : " + KeyDetector.printableCode(key.mCode)
+            Log.d(TAG, "onPress    : " + KeyDetector.printableCode(key)
                     + " sliding=" + withSliding + " ignoreModifier=" + ignoreModifierKey
                     + " enabled=" + key.isEnabled());
         }
@@ -264,7 +264,7 @@
         // If code is CODE_DUMMY here, this key will be ignored or generate text.
         final CharSequence text = (code != Keyboard.CODE_DUMMY) ? null : key.mOutputText;
         if (DEBUG_LISTENER) {
-            Log.d(TAG, "onCodeInput: " + KeyDetector.printableCode(code) + " text=" + text
+            Log.d(TAG, "onCodeInput: " + Keyboard.printableCode(code) + " text=" + text
                     + " codes="+ KeyDetector.printableCodes(keyCodes) + " x=" + x + " y=" + y
                     + " ignoreModifier=" + ignoreModifierKey + " alterCode=" + alterCode
                     + " enabled=" + key.isEnabled());
@@ -289,7 +289,7 @@
     private void callListenerOnRelease(Key key, int primaryCode, boolean withSliding) {
         final boolean ignoreModifierKey = mIgnoreModifierKey && key.isModifier();
         if (DEBUG_LISTENER) {
-            Log.d(TAG, "onRelease  : " + KeyDetector.printableCode(primaryCode)
+            Log.d(TAG, "onRelease  : " + Keyboard.printableCode(primaryCode)
                     + " sliding=" + withSliding + " ignoreModifier=" + ignoreModifierKey
                     + " enabled="+ key.isEnabled());
         }