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diff --git a/include/tools/pathutils.hxx b/include/tools/pathutils.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_TOOLS_PATHUTILS_HXX
+#define INCLUDED_TOOLS_PATHUTILS_HXX
+
+#include <sal/config.h>
+
+#if defined(_WIN32)
+#include <cstddef>
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+// The compiled code is not part of the tl dynamic library, but is delivered as
+// pathutils-obj and pathutils-slo objects (it is linked into special
+// executables and dynamic libraries that do not link against OOo libraries):
+namespace tools {
+
+/** Determine the filename part of a path.
+    @param path
+        A non-NULL pointer to a null-terminated path.
+    @return
+        A pointer to the trailing filename part of the given path.
+*/
+WCHAR * filename(WCHAR * path);
+
+/** Concatenate two paths.
+
+    Either the first path is empty and the second path is an absolute path. Or
+    the first path is an absolute path that ends in a backslash and the second
+    path is a relative path.  In the latter case, to avoid paths that grow too
+    long, leading .. segments of the second path are removed together with
+    trailing segments from the first path. This should not cause problems as long
+    as there are no symbolic links on Windows (as with symbolic links, x\y\.. and
+    x might denote different directories).
+
+    @param path
+        An output parameter taking the resulting path; must point at a valid
+        range of memory of size at least MAX_PATH.  If NULL is returned, the
+        content is unspecified.
+    @param frontBegin, frontEnd
+        Forms a valid range [frontBegin .. frontEnd) of less than MAX_PATH size.
+    @param backBegin, backLength
+        Forms a valid range [backBegin .. backBegin + backLength) of less than
+        MAX_PATH size.
+    @return
+        A pointer to the terminating null character of the concatenation, or NULL
+        if a failure occurred.
+*/
+WCHAR * buildPath(
+    WCHAR * path, WCHAR const * frontBegin, WCHAR const * frontEnd,
+    WCHAR const * backBegin, std::size_t backLength);
+
+}
+
+#endif
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */