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diff --git a/include/i18nutil/unicode.hxx b/include/i18nutil/unicode.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_I18NUTIL_UNICODE_HXX
+#define INCLUDED_I18NUTIL_UNICODE_HXX
+
+#include <com/sun/star/i18n/UnicodeScript.hpp>
+#include <sal/types.h>
+#include <rtl/ustrbuf.hxx>
+#include <unicode/uscript.h>
+#include <i18nutil/i18nutildllapi.h>
+
+class LanguageTag;
+
+struct ScriptTypeList
+{
+    css::i18n::UnicodeScript from;
+    css::i18n::UnicodeScript to;
+    sal_Int16 value;
+};
+
+class I18NUTIL_DLLPUBLIC unicode
+{
+public:
+    static sal_Int16 getUnicodeType(const sal_Unicode ch);
+    static sal_Int16 getUnicodeScriptType(const sal_Unicode ch, const ScriptTypeList* typeList,
+                                          sal_Int16 unknownType = 0);
+    static sal_Unicode getUnicodeScriptStart(css::i18n::UnicodeScript type);
+    static sal_Unicode getUnicodeScriptEnd(css::i18n::UnicodeScript type);
+    static sal_uInt8 getUnicodeDirection(const sal_Unicode ch);
+    static sal_uInt32 GetMirroredChar(sal_uInt32);
+    static bool isControl(const sal_Unicode ch);
+    static bool isAlpha(const sal_Unicode ch);
+    static bool isSpace(const sal_Unicode ch);
+    static bool isWhiteSpace(const sal_Unicode ch);
+
+    /** Check for Unicode variation sequence selectors
+
+        @param nCode  A Unicode code point.
+
+        @return  True if code is a Unicode variation sequence selector.
+     */
+    static bool isIVSSelector(sal_uInt32 nCode)
+    {
+        return (nCode >= 0xFE00 && nCode <= 0xFE0F) // Variation Selectors block
+               || (nCode >= 0xE0100 && nCode <= 0xE01EF); // Variation Selectors Supplement block
+    }
+
+    /** Check for base characters of a CJK ideographic variation sequence (IVS)
+
+        @param nCode  A Unicode code point.
+
+        @return  True if code is a Unicode base character part of CJK IVS
+     */
+    static bool isCJKIVSCharacter(sal_uInt32 nCode)
+    {
+        return (nCode >= 0x4E00 && nCode <= 0x9FFF) // CJK Unified Ideographs
+               || (nCode >= 0x3400 && nCode <= 0x4DBF) // CJK Unified Ideographs Extension A
+               || (nCode >= 0x20000 && nCode <= 0x2A6DF); // CJK Unified Ideographs Extension B
+    }
+
+    //Map an ISO 15924 script code to Latin/Asian/Complex/Weak
+    static sal_Int16 getScriptClassFromUScriptCode(UScriptCode eScript);
+
+    //Return a language that can be written in a given ISO 15924 script code
+    static OString getExemplarLanguageForUScriptCode(UScriptCode eScript);
+
+    //Format a number as a percentage according to the rules of the given
+    //language, e.g. 100 -> "100%" for en-US vs "100 %" for de-DE
+    static OUString formatPercent(double dNumber, const LanguageTag& rLangTag);
+};
+
+/*
+    Toggle between a character and its Unicode Notation.
+        -implements the concept found in Microsoft Word's Alt-X
+        -accepts sequences of up to 8 hex characters and converts into the corresponding Unicode Character
+            -example:  0000A78c   or   2bc
+        -accepts sequences of up to 256 characters in Unicode notation
+            -example:  U+00000065u+0331u+308
+        -handles complex characters (with combining elements) and the all of the Unicode planes.
+*/
+class I18NUTIL_DLLPUBLIC ToggleUnicodeCodepoint
+{
+private:
+    OUStringBuffer maInput;
+    OUStringBuffer maUtf16;
+    OUStringBuffer maCombining;
+    bool mbAllowMoreChars = true;
+    bool mbRequiresU = false;
+    bool mbIsHexString = false;
+
+public:
+    /**
+    Build an input string of valid UTF16 units to toggle.
+        -do not call the other functions until the input process is complete
+        -build string from Right to Left.  (Start from the character to the left of the cursor: move left.)
+    */
+    bool AllowMoreInput(sal_Unicode uChar);
+
+    /**
+    Validates (and potentially modifies) the input string.
+        -all non-input functions must use this function to first to validate the input string
+        -additional input may be prevented after this function is called
+    */
+    OUString StringToReplace();
+    OUString ReplacementString();
+
+    /**
+    While sInput.getLength() returns the number of utf16 units to delete,
+        this function returns the number of "characters" to delete - potentially a smaller number
+    */
+    sal_uInt32 CharsToDelete();
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */