--- old/make/data/characterdata/CharacterDataPrivateUse.java.template	2018-12-03 22:20:04.795846546 -0600
+++ new/make/data/characterdata/CharacterDataPrivateUse.java.template	2018-12-03 22:20:04.195866406 -0600
@@ -80,6 +80,18 @@
 		return -1;
     }
 
+    boolean isDigit(int ch) {
+		return false;
+    }
+
+    boolean isLowerCase(int ch) {
+		return false;
+    }
+
+    boolean isUpperCase(int ch) {
+		return false;
+    }
+
     boolean isWhitespace(int ch) {
 		return false;
     }