QString: overload the += operator to handle QUtf8StringView

The += operator is already overloaded to handle QStringView and
QLatin1String - add the missing QUtf8StringView overload.

[ChangeLog][QtCore][QString] Added operator+=(QUtf8StringView)
overload.

Task-number: QTBUG-103302
Change-Id: Iec6940bad7866310c826a130b98accebc3c82aa8
Reviewed-by: Marc Mutz <marc.mutz@qt.io>

2 files changed, 9 insertions, 1 deletions

diff --git a/src/corelib/text/qstring.cpp b/src/corelib/text/qstring.cpp
index 4ca66a2634..326435f28f 100644
--- a/src/corelib/text/qstring.cpp
+++ b/src/corelib/text/qstring.cpp
@@ -6195,7 +6195,14 @@ QString& QString::fill(QChar ch, qsizetype size)
 
     \overload operator+=()
 
-    Appends the Latin-1 string \a str to this string.
+    Appends the Latin-1 string view \a str to this string.
+*/
+
+/*! \fn QString &QString::operator+=(QUtf8StringView str)
+    \since 6.5
+    \overload operator+=()
+
+    Appends the UTF-8 string view \a str to this string.
 */
 
 /*! \fn QString &QString::operator+=(const QByteArray &ba)
diff --git a/src/corelib/text/qstring.h b/src/corelib/text/qstring.h
index 74dcf3986a..16ab13e1e9 100644
--- a/src/corelib/text/qstring.h
+++ b/src/corelib/text/qstring.h
@@ -706,6 +706,7 @@ public:
     inline QString &operator+=(const QString &s) { return append(s); }
     inline QString &operator+=(QStringView v) { return append(v); }
     inline QString &operator+=(QLatin1StringView s) { return append(s); }
+    QString &operator+=(QUtf8StringView s) { return append(s); }
 
     QString &remove(qsizetype i, qsizetype len);
     QString &remove(QChar c, Qt::CaseSensitivity cs = Qt::CaseSensitive);