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diff --git a/xdiff/xutils.h b/xdiff/xutils.h
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+/*
+ * LibXDiff by Davide Libenzi ( File Differential Library )
+ * Copyright (C) 2003 Davide Libenzi
+ *
+ * This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#if !defined(XUTILS_H)
+#define XUTILS_H
+
+
+int xdl_emit_diffrec(char const *rec, long size, char const *pre, long psize,
+ xdemitcb_t *ecb);
+int xdl_cha_init(chastore_t *cha, long isize, long icount);
+void xdl_cha_free(chastore_t *cha);
+void *xdl_cha_alloc(chastore_t *cha);
+void *xdl_cha_first(chastore_t *cha);
+void *xdl_cha_next(chastore_t *cha);
+long xdl_guess_lines(mmfile_t *mf);
+unsigned long xdl_hash_record(char const **data, char const *top);
+unsigned int xdl_hashbits(unsigned int size);
+int xdl_num_out(char *out, long val);
+long xdl_atol(char const *str, char const **next);
+int xdl_emit_hunk_hdr(long s1, long c1, long s2, long c2, xdemitcb_t *ecb);
+
+
+
+#endif /* #if !defined(XUTILS_H) */
+