From e1558d630085ac448db37044b4ed68f71f4cb96a Mon Sep 17 00:00:00 2001
From: Janek Bevendorff <janek@jbev.net>
Date: Tue, 27 Feb 2018 15:28:12 +0100
Subject: [PATCH] Avoid double file extension replacement in backup filename

---
 src/core/Database.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/core/Database.cpp b/src/core/Database.cpp
index a4d66313..94b41cdf 100644
--- a/src/core/Database.cpp
+++ b/src/core/Database.cpp
@@ -570,10 +570,11 @@ QString Database::writeDatabase(QIODevice* device)
  * @param filePath Path to the file to backup
  * @return
  */
+
 bool Database::backupDatabase(QString filePath)
 {
     QString backupFilePath = filePath;
-    auto re = QRegularExpression("(?:\\.kdbx)?$", QRegularExpression::CaseInsensitiveOption);
+    auto re = QRegularExpression("\\.kdbx$|(?<!\\.kdbx)$", QRegularExpression::CaseInsensitiveOption);
     backupFilePath.replace(re, ".old.kdbx");
     QFile::remove(backupFilePath);
     return QFile::copy(filePath, backupFilePath);