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diff --git a/sw/inc/breakit.hxx b/sw/inc/breakit.hxx
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+++ b/sw/inc/breakit.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SW_INC_BREAKIT_HXX
+#define INCLUDED_SW_INC_BREAKIT_HXX
+
+#include <memory>
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/i18n/ForbiddenCharacters.hpp>
+#include <i18nlangtag/languagetag.hxx>
+#include "swdllapi.h"
+
+enum class SvtScriptType : sal_uInt8;
+namespace com::sun::star::i18n { class XBreakIterator; }
+namespace com::sun::star::uno { class XComponentContext; }
+
+class SW_DLLPUBLIC SwBreakIt
+{
+    css::uno::Reference< css::uno::XComponentContext > m_xContext;
+    css::uno::Reference<css::i18n::XBreakIterator> m_xBreak;
+
+    std::unique_ptr<LanguageTag> m_xLanguageTag;   ///< language tag of the current locale
+    std::unique_ptr<css::i18n::ForbiddenCharacters> m_xForbidden;
+
+    LanguageType m_aForbiddenLang; ///< language of the current forbiddenChar struct
+
+    void GetLocale_( const LanguageType aLang );
+    void GetLocale_( const LanguageTag& rLanguageTag );
+    void GetForbidden_( const LanguageType  aLang );
+
+    SwBreakIt(SwBreakIt const&) = delete;
+    SwBreakIt& operator=(SwBreakIt const&) = delete;
+
+    // private (see @ Create_, Delete_).
+    explicit SwBreakIt(const css::uno::Reference<css::uno::XComponentContext> & rxContext);
+
+public:
+    // private (see @ source/core/bastyp/init.cxx).
+    static void Create_(
+        const css::uno::Reference< css::uno::XComponentContext > & rxContext);
+    static void Delete_();
+
+public:
+    static SwBreakIt * Get();
+
+    css::uno::Reference< css::i18n::XBreakIterator > const & GetBreakIter() const
+    {
+        return m_xBreak;
+    }
+
+    const css::lang::Locale& GetLocale( const LanguageType aLang )
+    {
+        if (!m_xLanguageTag || m_xLanguageTag->getLanguageType() != aLang)
+            GetLocale_(aLang);
+        return m_xLanguageTag->getLocale();
+    }
+
+    const css::lang::Locale& GetLocale( const LanguageTag& rLanguageTag )
+    {
+        // Use LanguageType comparison instead of LanguageTag::operator!=()
+        // because here the LanguageTag is already a known LanguageType value
+        // assigned, so LanguageTag does not need to convert to BCP47 for
+        // comparison.
+        if (!m_xLanguageTag || m_xLanguageTag->getLanguageType() != rLanguageTag.getLanguageType())
+            GetLocale_(rLanguageTag);
+        return m_xLanguageTag->getLocale();
+    }
+
+    const LanguageTag& GetLanguageTag( const LanguageType aLang )
+    {
+        if (!m_xLanguageTag || m_xLanguageTag->getLanguageType() != aLang)
+            GetLocale_(aLang);
+        return *m_xLanguageTag;
+    }
+
+    const LanguageTag& GetLanguageTag( const LanguageTag& rLanguageTag )
+    {
+        // Use LanguageType comparison instead of LanguageTag::operator!=()
+        // because here the LanguageTag is already a known LanguageType value
+        // assigned, so LanguageTag does not need to convert to BCP47 for
+        // comparison.
+        if (!m_xLanguageTag || m_xLanguageTag->getLanguageType() != rLanguageTag.getLanguageType())
+            GetLocale_( rLanguageTag );
+        return *m_xLanguageTag;
+    }
+
+    const css::i18n::ForbiddenCharacters& GetForbidden( const LanguageType aLang )
+    {
+        if (!m_xForbidden || m_aForbiddenLang != aLang)
+            GetForbidden_( aLang );
+        return *m_xForbidden;
+    }
+
+    sal_uInt16 GetRealScriptOfText( const OUString& rText, sal_Int32 nPos ) const;
+    SvtScriptType GetAllScriptsOfText( const OUString& rText ) const;
+
+    sal_Int32 getGraphemeCount(const OUString& rStr,
+        sal_Int32 nStart, sal_Int32 nEnd) const;
+    sal_Int32 getGraphemeCount(const OUString& rStr) const
+    {
+        return getGraphemeCount(rStr, 0, rStr.getLength());
+    }
+};
+
+#define SW_BREAKITER()  SwBreakIt::Get()
+
+// @@@ backward compatibility @@@
+SW_DLLPUBLIC extern SwBreakIt* g_pBreakIt;
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */