From a9e2dadbc9299f1489b0201da85cf951f115cc37 Mon Sep 17 00:00:00 2001
From: Emden Gansner <erg@research.att.com>
Date: Wed, 3 Aug 2011 16:19:05 -0400
Subject: [PATCH] Fix bug 2120

---
 cmd/gvedit/csettings.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmd/gvedit/csettings.cpp b/cmd/gvedit/csettings.cpp
index 5eba424f4..1086aee3b 100644
--- a/cmd/gvedit/csettings.cpp
+++ b/cmd/gvedit/csettings.cpp
@@ -373,11 +373,11 @@ bool CFrmSettings::renderLayout()
     if (!graph)
 	return false;
     QString sfx = WIDGET(QComboBox, cbExtension)->currentText();
+    QString fileName(WIDGET(QLineEdit, leOutput)->text());
 
-    if (sfx == QString("NONE"))
+    if ((fileName == QString("")) || (sfx == QString("NONE")))
 	doPreview(QString());
     else {
-	QString fileName(WIDGET(QLineEdit, leOutput)->text());
 	fileName = stripFileExtension(fileName);
 	fileName = fileName + "." + sfx;
 	if (fileName != activeWindow->outputFile)
-- 
2.40.0