From 4706d9616b9d2415f3f9651473a6de1cee13e7c9 Mon Sep 17 00:00:00 2001
From: Diane Holt <holtdl@apache.org>
Date: Wed, 31 Oct 2001 22:50:21 +0000
Subject: [PATCH] Fix increment/decrement bug. PR: 4549 Obtained from:
 Submitted by: Reviewed by:

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269849 13f79535-47bb-0310-9956-ffa450edef68
---
 .../org/apache/tools/ant/taskdefs/optional/PropertyFile.java  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/PropertyFile.java b/src/main/org/apache/tools/ant/taskdefs/optional/PropertyFile.java
index aabee1301..02ad75810 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/PropertyFile.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/PropertyFile.java
@@ -546,10 +546,10 @@ public class PropertyFile extends Task
                 newValue = value;
             }
             else if (m_operation == Operation.INCREMENT_OPER) {
-                newValue += value;
+                newValue = ++value;
             }
             else if (m_operation == Operation.DECREMENT_OPER) {
-                newValue -= value;
+                newValue = --value;
             }
             m_value = fmt.format(newValue);
         }