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diff --git a/lib/unicase/unicasemap.h b/lib/unicase/unicasemap.h
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+/* Case mapping for UTF-8/UTF-16/UTF-32 strings (locale dependent).
+ Copyright (C) 2009 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 2009.
+
+ This program is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <stddef.h>
+
+#include "unitypes.h"
+#include "unicase.h"
+#include "uninorm.h"
+
+extern uint8_t *
+ u8_casemap (const uint8_t *s, size_t n,
+ casing_prefix_context_t prefix_context,
+ casing_suffix_context_t suffix_context,
+ const char *iso639_language,
+ ucs4_t (*single_character_map) (ucs4_t),
+ size_t offset_in_rule, /* offset in 'struct special_casing_rule' */
+ uninorm_t nf,
+ uint8_t *resultbuf, size_t *lengthp);
+
+extern uint16_t *
+ u16_casemap (const uint16_t *s, size_t n,
+ casing_prefix_context_t prefix_context,
+ casing_suffix_context_t suffix_context,
+ const char *iso639_language,
+ ucs4_t (*single_character_map) (ucs4_t),
+ size_t offset_in_rule, /* offset in 'struct special_casing_rule' */
+ uninorm_t nf,
+ uint16_t *resultbuf, size_t *lengthp);
+
+extern uint32_t *
+ u32_casemap (const uint32_t *s, size_t n,
+ casing_prefix_context_t prefix_context,
+ casing_suffix_context_t suffix_context,
+ const char *iso639_language,
+ ucs4_t (*single_character_map) (ucs4_t),
+ size_t offset_in_rule, /* offset in 'struct special_casing_rule' */
+ uninorm_t nf,
+ uint32_t *resultbuf, size_t *lengthp);