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diff --git a/intl/icu/source/i18n/casetrn.h b/intl/icu/source/i18n/casetrn.h
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+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+*******************************************************************************
+*
+*   Copyright (C) 2001-2008, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+*
+*******************************************************************************
+*   file name:  casetrn.h
+*   encoding:   UTF-8
+*   tab size:   8 (not used)
+*   indentation:4
+*
+*   created on: 2004sep03
+*   created by: Markus W. Scherer
+*
+*   Implementation class for lower-/upper-/title-casing transliterators.
+*/
+
+#ifndef __CASETRN_H__
+#define __CASETRN_H__
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_TRANSLITERATION
+
+#include "unicode/translit.h"
+#include "ucase.h"
+
+U_NAMESPACE_BEGIN
+
+/**
+ * A transliterator that performs locale-sensitive
+ * case mapping.
+ */
+class CaseMapTransliterator : public Transliterator {
+public:
+    /**
+     * Constructs a transliterator.
+     * @param loc the given locale.
+     * @param id  the transliterator ID.
+     * @param map the full case mapping function (see ucase.h)
+     */
+    CaseMapTransliterator(const UnicodeString &id, UCaseMapFull *map);
+
+    /**
+     * Destructor.
+     */
+    virtual ~CaseMapTransliterator();
+
+    /**
+     * Copy constructor.
+     */
+    CaseMapTransliterator(const CaseMapTransliterator&);
+
+    /**
+     * Transliterator API.
+     * @return a copy of the object.
+     */
+    virtual CaseMapTransliterator* clone() const = 0;
+
+    /**
+     * ICU "poor man's RTTI", returns a UClassID for the actual class.
+     */
+    //virtual UClassID getDynamicClassID() const;
+
+    /**
+     * ICU "poor man's RTTI", returns a UClassID for this class.
+     */
+    U_I18N_API static UClassID U_EXPORT2 getStaticClassID();
+
+protected:
+    /**
+     * Implements {@link Transliterator#handleTransliterate}.
+     * @param text        the buffer holding transliterated and
+     *                    untransliterated text
+     * @param offset      the start and limit of the text, the position
+     *                    of the cursor, and the start and limit of transliteration.
+     * @param incremental if true, assume more text may be coming after
+     *                    pos.contextLimit.  Otherwise, assume the text is complete.
+     */
+    virtual void handleTransliterate(Replaceable& text,
+                                     UTransPosition& offsets, 
+                                     UBool isIncremental) const;
+
+    UCaseMapFull *fMap;
+
+private:
+    /**
+     * Assignment operator.
+     */
+    CaseMapTransliterator& operator=(const CaseMapTransliterator&);
+
+};
+
+U_NAMESPACE_END
+
+/** case context iterator using a Replaceable. This must be a C function because it is a callback. */
+U_CFUNC UChar32 U_CALLCONV
+utrans_rep_caseContextIterator(void *context, int8_t dir);
+
+#endif /* #if !UCONFIG_NO_TRANSLITERATION */
+
+#endif