From bc81f00dc76e45a29f79800a5949a5fe7c0515ca Mon Sep 17 00:00:00 2001
From: Brad Davis <bdavis@saintandreas.org>
Date: Sat, 4 Jun 2016 20:47:10 -0700
Subject: [PATCH] Eliminate extraneous writes for unchanged values

---
 libraries/shared/src/SettingHandle.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/libraries/shared/src/SettingHandle.cpp b/libraries/shared/src/SettingHandle.cpp
index cad2a0286f..b2f23f5a04 100644
--- a/libraries/shared/src/SettingHandle.cpp
+++ b/libraries/shared/src/SettingHandle.cpp
@@ -28,7 +28,9 @@ Settings::~Settings() {
 }
 
 void Settings::remove(const QString& key) {
-    _manager->remove(key);
+    if (key == "" || _manager->contains(key)) {
+        _manager->remove(key);
+    }
 }
 
 QStringList Settings::childGroups() const {
@@ -72,7 +74,9 @@ void Settings::endGroup() {
 }
 
 void Settings::setValue(const QString& name, const QVariant& value) {
-    _manager->setValue(name, value);
+    if (_manager->value(name) != value) {
+        _manager->setValue(name, value);
+    }
 }
 
 QVariant Settings::value(const QString& name, const QVariant& defaultValue) const {