--- old/make/data/characterdata/CharacterDataUndefined.java.template	2018-12-03 22:20:05.885810467 -0600
+++ new/make/data/characterdata/CharacterDataUndefined.java.template	2018-12-03 22:20:05.285830327 -0600
@@ -78,6 +78,18 @@
 		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;
     }