Almost got it to work...

railo-java/railo-core/src/railo/transformer/cfml/evaluator/func/impl/PrecisionEvaluate.java

@@ -0,0 +1,37 @@
+package railo.transformer.cfml.evaluator.func.impl;
+
+import railo.runtime.exp.TemplateException;
+import railo.transformer.bytecode.Position;
+import railo.transformer.bytecode.expression.Expression;
+import railo.transformer.bytecode.expression.var.Argument;
+import railo.transformer.bytecode.expression.var.BIF;
+import railo.transformer.bytecode.literal.LitString;
+import railo.transformer.bytecode.op.OpDouble;
+import railo.transformer.cfml.evaluator.FunctionEvaluator;
+import railo.transformer.library.function.FunctionLibFunction;
+
+
+public class PrecisionEvaluate implements FunctionEvaluator {
+
+	@Override
+	public void evaluate(BIF bif, FunctionLibFunction flf) throws TemplateException {
+
+		Argument[] args = bif.getArguments();
+
+		for (Argument arg : args) {
+
+			Expression value = arg.getValue();
+
+			if (value instanceof OpDouble) {
+
+				/* this works:
+				String lit = "p1 + p2";
+				Position p1 = new Position(0,0,0), p2 = new Position(0,lit.length()-1,lit.length()-1);
+				arg.setValue(LitString.toExprString( lit, p1, p2 ), "string"); //*/
+
+				// TODO: HOW DO WE GET THE ORIGINAL CFML STRING HERE?
+//				arg.setValue(LitString.toExprString( arg.getRawValue(), value.getStart(), value.getEnd() ), "string");
+			}
+		}
+	}
+}

railo-java/railo-core/src/resource/fld/web-cfmfunctionlibrary_1_0

@@ -12943,6 +12943,7 @@ You can find a list of all available timezones in the Railo administrator (Setti
 	<function>
 		<name>PrecisionEvaluate</name>
 		<class>railo.runtime.functions.dynamicEvaluation.PrecisionEvaluate</class>
+		<tte-class>railo.transformer.cfml.evaluator.func.impl.PrecisionEvaluate</tte-class>
 		<description>Evaluates one or more string expressions.</description>
 		<argument-type>dynamic</argument-type>
 		<argument-min>1</argument-min>