Use QLatin1String

akonadi-import-wizard/opera/operasettings.cpp

@@ -255,7 +255,7 @@ void OperaSettings::readIdentity(const KConfigGroup &grp)
     if (!signatureFile.isEmpty()) {
         KIdentityManagement::Signature signature;
         const int signatureHtml = grp.readEntry(QStringLiteral("Signature is HTML"), -1);
-        if (signatureFile.contains(QStringLiteral("{Preferences}"))) {
+        if (signatureFile.contains(QLatin1String("{Preferences}"))) {
             signatureFile.replace(QStringLiteral("{Preferences}"), MailImporter::FilterOpera::defaultSettingsPath() + QStringLiteral("/"));
         }
 

kmail/editorplugins/insertshorturl/shorturlengineplugin/shorturlenginepluginmanager.cpp

@@ -59,7 +59,7 @@ public:
 void ShortUrlEnginePluginManagerPrivate::initializePlugins()
 {
     const QVector<KPluginMetaData> plugins = KPluginLoader::findPlugins(QStringLiteral("pimcommon"), [](const KPluginMetaData &md) {
-        return md.serviceTypes().contains(QStringLiteral("PimCommonShortUrlEngine/Plugin"));
+        return md.serviceTypes().contains(QLatin1String("PimCommonShortUrlEngine/Plugin"));
     });
 
     QVectorIterator<KPluginMetaData> i(plugins);

plugins/messageviewer/bodypartformatter/calendar/text_calendar.cpp

@@ -1246,7 +1246,7 @@ public:
     {
         // filter out known paths that don't belong to this type of urlmanager.
         // kolab/issue4054 msg27201
-        if (path.contains(QStringLiteral("addToAddressBook:")) || path.contains(QStringLiteral("updateToAddressBook"))) {
+        if (path.contains(QLatin1String("addToAddressBook:")) || path.contains(QLatin1String("updateToAddressBook"))) {
             return false;
         }