From fb8ff04956480eef89a1175ebca73f4c5657fe23 Mon Sep 17 00:00:00 2001
From: Vladimir Krivosheev <vladimir.krivosheev@jetbrains.com>
Date: Tue, 14 Jul 2015 17:53:00 +0200
Subject: [PATCH] RunConfigurationExtensionsManager must not write defaults

---
 .../RunConfigurationExtensionsManager.java    | 21 +++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/platform/lang-api/src/com/intellij/execution/configuration/RunConfigurationExtensionsManager.java b/platform/lang-api/src/com/intellij/execution/configuration/RunConfigurationExtensionsManager.java
index fc443ffd0385..df11145c08af 100644
--- a/platform/lang-api/src/com/intellij/execution/configuration/RunConfigurationExtensionsManager.java
+++ b/platform/lang-api/src/com/intellij/execution/configuration/RunConfigurationExtensionsManager.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2000-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.intellij.execution.configuration;
 
 import com.intellij.execution.ExecutionException;
@@ -91,10 +106,12 @@ public class RunConfigurationExtensionsManager<U extends RunConfigurationBase, T
         extension.writeExternal(configuration, element);
       }
       catch (WriteExternalException ignored) {
-        map.remove(extension.getSerializationId());
         continue;
       }
-      map.put(extension.getSerializationId(), element);
+
+      if (!element.getContent().isEmpty() || element.getAttributes().size() > 1) {
+        map.put(extension.getSerializationId(), element);
+      }
     }
 
     for (Element values : map.values()) {