From abc14c00a0202dd6142a37a10e37c809fa47579e Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Wed, 5 Mar 2025 17:40:36 -0500
Subject: [PATCH] use different method to enforce the C locale in LAMMPS GUI

---
 tools/lammps-gui/main.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/lammps-gui/main.cpp b/tools/lammps-gui/main.cpp
index 53bdaca8fd..5f2599c3df 100644
--- a/tools/lammps-gui/main.cpp
+++ b/tools/lammps-gui/main.cpp
@@ -20,6 +20,7 @@
 #include <QSettings>
 #include <QString>
 #include <QStringList>
+#include <QtGlobal>
 
 #include <cstdio>
 #include <cstring>
@@ -35,9 +36,10 @@ int main(int argc, char *argv[])
     qRegisterMetaTypeStreamOperators<QList<QString>>("QList<QString>");
 #endif
 
+    // enforce using the plain ASCII C locale with UTF-8 encoding within the GUI.
+    qputenv("LC_ALL", "C.UTF-8");
+
     QApplication app(argc, argv);
-    // enforce using the plain ASCII C locale within the GUI.
-    QLocale::setDefault(QLocale::c());
     QCoreApplication::setOrganizationName("The LAMMPS Developers");
     QCoreApplication::setOrganizationDomain("lammps.org");
     QCoreApplication::setApplicationName("LAMMPS-GUI - QT" stringify(QT_VERSION_MAJOR));