5 files changed, 169 insertions, 2 deletions
diff --git a/src/gui/text/qfont.cpp b/src/gui/text/qfont.cpp
index 3b24039ea6..7f3ed3adaa 100644
--- a/src/gui/text/qfont.cpp
+++ b/src/gui/text/qfont.cpp
@@ -2077,6 +2077,8 @@ bool QFont::fromString(const QString &descrip)
         setFixedPitch(l[8].toInt());
         if (count == 11)
             d->request.styleName = l[10].toString();
+        else
+            d->request.styleName.clear();
     }
 
     if (count >= 9 && !d->request.fixedPitch) // assume 'false' fixedPitch equals default
diff --git a/src/gui/text/qinputcontrol.cpp b/src/gui/text/qinputcontrol.cpp
new file mode 100644
index 0000000000..c2c198866a
--- /dev/null
+++ b/src/gui/text/qinputcontrol.cpp
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qinputcontrol_p.h"
+#include <QtGui/qevent.h>
+
+QT_BEGIN_NAMESPACE
+
+QInputControl::QInputControl(Type type, QObject *parent)
+    : QObject(parent)
+    , m_type(type)
+{
+}
+
+QInputControl::QInputControl(Type type, QObjectPrivate &dd, QObject *parent)
+    : QObject(dd, parent)
+    , m_type(type)
+{
+}
+
+bool QInputControl::isAcceptableInput(const QKeyEvent *event) const
+{
+    const QString text = event->text();
+    if (text.isEmpty())
+        return false;
+
+    const QChar c = text.at(0);
+
+    // ZWNJ and ZWJ. This needs to go before the next test, since CTRL+SHIFT is
+    // used to input it on Windows.
+    if (c == QChar(0x200C) || c == QChar(0x200D))
+        return true;
+
+    // QTBUG-35734: ignore Ctrl/Ctrl+Shift; accept only AltGr (Alt+Ctrl) on German keyboards
+    if (event->modifiers() == Qt::ControlModifier
+            || event->modifiers() == (Qt::ShiftModifier | Qt::ControlModifier)) {
+        return false;
+    }
+
+    if (c.isPrint())
+        return true;
+
+    if (c.category() == QChar::Other_PrivateUse)
+        return true;
+
+    if (m_type == TextEdit && c == QLatin1Char('\t'))
+        return true;
+
+    return false;
+}
+
+QT_END_NAMESPACE
diff --git a/src/gui/text/qinputcontrol_p.h b/src/gui/text/qinputcontrol_p.h
new file mode 100644
index 0000000000..3b46067ba9
--- /dev/null
+++ b/src/gui/text/qinputcontrol_p.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QINPUTCONTROL_P_H
+#define QINPUTCONTROL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobject.h>
+#include <qtguiglobal.h>
+
+QT_BEGIN_NAMESPACE
+
+class QKeyEvent;
+class Q_GUI_EXPORT QInputControl : public QObject
+{
+    Q_OBJECT
+public:
+    enum Type {
+        LineEdit,
+        TextEdit
+    };
+
+    explicit QInputControl(Type type, QObject *parent = nullptr);
+
+    bool isAcceptableInput(const QKeyEvent *event) const;
+
+protected:
+    explicit QInputControl(Type type, QObjectPrivate &dd, QObject *parent = nullptr);
+
+private:
+    const Type m_type;
+};
+
+QT_END_NAMESPACE
+
+#endif // QINPUTCONTROL_P_H
diff --git a/src/gui/text/qtextdocument.cpp b/src/gui/text/qtextdocument.cpp
index 0d05fee6ef..c006e7f427 100644
--- a/src/gui/text/qtextdocument.cpp
+++ b/src/gui/text/qtextdocument.cpp
@@ -1148,6 +1148,11 @@ void QTextDocument::setMetaInformation(MetaInformation info, const QString &stri
     Returns the plain text contained in the document. If you want
     formatting information use a QTextCursor instead.
 
+    Some formatting characters are replaced by ASCII equivalents.
+    In particular, no-break space (U+00A0) is replaced by a regular
+    space (U+0020), and both paragraph (U+2029) and line (U+2028)
+    separators are replaced by line feed (U+000A).
+
     \note Embedded objects, such as images, are represented by a
     Unicode value U+FFFC (OBJECT REPLACEMENT CHARACTER).
 
diff --git a/src/gui/text/text.pri b/src/gui/text/text.pri
index efd041a5af..abe20abe02 100644
--- a/src/gui/text/text.pri
+++ b/src/gui/text/text.pri
@@ -39,7 +39,8 @@ HEADERS += \
     text/qrawfont_p.h \
     text/qglyphrun.h \
     text/qglyphrun_p.h \
-    text/qdistancefield_p.h
+    text/qdistancefield_p.h \
+    text/qinputcontrol_p.h
 
 SOURCES += \
     text/qfont.cpp \
@@ -69,7 +70,8 @@ SOURCES += \
     text/qstatictext.cpp \
     text/qrawfont.cpp \
     text/qglyphrun.cpp \
-    text/qdistancefield.cpp
+    text/qdistancefield.cpp \
+    text/qinputcontrol.cpp
 
 SOURCES += \
     text/qfontengine_qpf2.cpp \