Use multi arg to avoid unneeded allocations

addons/gdbplugin/debugview.cpp

@@ -50,7 +50,7 @@ void DebugView::runDebugger(const GDBTargetConf &conf, const QStringList &ioFifo
     }
     m_targetConf = conf;
     if (ioFifos.size() == 3) {
-        m_ioPipeString = QStringLiteral("< %1 1> %2 2> %3").arg(ioFifos[0]).arg(ioFifos[1]).arg(ioFifos[2]);
+        m_ioPipeString = QStringLiteral("< %1 1> %2 2> %3").arg(ioFifos[0], ioFifos[1], ioFifos[2]);
     }
 
     if (m_state == none) {
@@ -79,7 +79,7 @@ void DebugView::runDebugger(const GDBTargetConf &conf, const QStringList &ioFifo
         QTimer::singleShot(0, this, &DebugView::issueNextCommand);
     }
     m_nextCommands << QStringLiteral("file \"%1\"").arg(m_targetConf.executable);
-    m_nextCommands << QStringLiteral("set args %1 %2").arg(m_targetConf.arguments).arg(m_ioPipeString);
+    m_nextCommands << QStringLiteral("set args %1 %2").arg(m_targetConf.arguments, m_ioPipeString);
     m_nextCommands << QStringLiteral("set inferior-tty /dev/null");
     m_nextCommands << m_targetConf.customInit;
     m_nextCommands << QStringLiteral("(Q) info breakpoints");

addons/katesql/textoutputwidget.cpp

@@ -89,7 +89,7 @@ void TextOutputWidget::showSuccessMessage(const QString &message)
 
 void TextOutputWidget::writeMessage(const QString &msg)
 {
-    m_output->append(QStringLiteral("%1: %2\n").arg(QDateTime::currentDateTime().toString(Qt::SystemLocaleDate)).arg(msg));
+    m_output->append(QStringLiteral("%1: %2\n").arg(QDateTime::currentDateTime().toString(Qt::SystemLocaleDate), msg));
 
     raise();
 }

addons/lspclient/lspclientpluginview.cpp

@@ -2010,7 +2010,7 @@ public:
 
         // let's consider this expert info and use ISO date
         auto now = QDateTime::currentDateTime().toString(Qt::ISODate);
-        auto text = QStringLiteral("[%1] [%2] [%3]\n%4\n").arg(now).arg(lvl).arg(header).arg(msg.trimmed());
+        auto text = QStringLiteral("[%1] [%2] [%3]\n%4\n").arg(now, lvl, header, msg.trimmed());
         m_messagesView->appendPlainText(text);
 
         if (static_cast<int>(level) <= m_messagesAutoSwitch->currentItem()) {

addons/lspclient/lspclientservermanager.h

@@ -64,7 +64,7 @@ public:
     {
         if (server) {
             auto root = server->root().toLocalFile();
-            return QStringLiteral("%1@%2").arg(server->langId()).arg(root);
+            return QStringLiteral("%1@%2").arg(server->langId(), root);
         } else {
             return {};
         }