From 40b8196df0f06a52caae1b272daa620df74c8577 Mon Sep 17 00:00:00 2001
From: Peter Reilly <peterreilly@apache.org>
Date: Wed, 20 Sep 2006 22:35:20 +0000
Subject: [PATCH] Perforamce:     do not bother to check if need to expand for 
    strings that do not have $

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@448379 13f79535-47bb-0310-9956-ffa450edef68
---
 src/main/org/apache/tools/ant/PropertyHelper.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/org/apache/tools/ant/PropertyHelper.java b/src/main/org/apache/tools/ant/PropertyHelper.java
index 2bf81d732..9c1d04181 100644
--- a/src/main/org/apache/tools/ant/PropertyHelper.java
+++ b/src/main/org/apache/tools/ant/PropertyHelper.java
@@ -249,8 +249,8 @@ public class PropertyHelper {
      */
     public String replaceProperties(String ns, String value, Hashtable keys)
             throws BuildException {
-        if (value == null) {
-            return null;
+        if (value == null || value.indexOf('$') == -1) {
+            return value;
         }
         Vector fragments = new Vector();
         Vector propertyRefs = new Vector();