# Some workaround after v1.7.0 update, because previous (1.6.16) version of

# focuswriter application may create empty /tmp/qtsingleapp-*-lockfile file

# after first run, which may prevent newer application to run.

--- src/qtsingleapplication/qtlocalpeer.cpp.orig	2018-12-11 18:42:05 UTC

+++ src/qtsingleapplication/qtlocalpeer.cpp

@@ -95,6 +95,17 @@ QtLocalPeer::QtLocalPeer(QObject* parent

     QString lockName = QDir(QDir::tempPath()).absolutePath()

                        + QLatin1Char('/') + socketName

                        + QLatin1String("-lockfile");

+#if defined(Q_OS_UNIX)

+{

+    QFile file(lockName);

+    if (file.exists() && file.open(QIODevice::ReadOnly)) {

+        bool isEmpty = (file.size() == 0);

+        file.close();

+        if (isEmpty)

+            QFile::remove(lockName);

+    }

+}

+#endif

     lockFile = new QLockFile(lockName);

     lockFile->setStaleLockTime(0);

 #if defined(Q_OS_WIN)