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diff --git a/extensions/spellcheck/hunspell/src/phonet.hxx b/extensions/spellcheck/hunspell/src/phonet.hxx
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+++ b/extensions/spellcheck/hunspell/src/phonet.hxx
@@ -0,0 +1,50 @@
+/*  phonetic.c - generic replacement aglogithms for phonetic transformation
+    Copyright (C) 2000 Bjoern Jacke
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License version 2.1 as published by the Free Software Foundation;
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; If not, see
+    <http://www.gnu.org/licenses/>.
+
+    Changelog:
+
+    2000-01-05  Bjoern Jacke <bjoern at j3e.de>
+                Initial Release insprired by the article about phonetic
+                transformations out of c't 25/1999
+
+    2007-07-26  Bjoern Jacke <bjoern at j3e.de>
+                Released under MPL/GPL/LGPL tri-license for Hunspell
+
+    2007-08-23  Laszlo Nemeth <nemeth at OOo>
+                Porting from Aspell to Hunspell using C-like structs
+*/
+
+#ifndef PHONET_HXX_
+#define PHONET_HXX_
+
+#define HASHSIZE 256
+#define MAXPHONETLEN 256
+#define MAXPHONETUTF8LEN (MAXPHONETLEN * 4)
+
+#include "hunvisapi.h"
+
+struct phonetable {
+  char utf8;
+  std::vector<std::string> rules;
+  int hash[HASHSIZE];
+};
+
+LIBHUNSPELL_DLL_EXPORTED void init_phonet_hash(phonetable& parms);
+
+LIBHUNSPELL_DLL_EXPORTED std::string phonet(const std::string& inword,
+                                            phonetable& phone);
+
+#endif