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diff --git a/tc.nls.h b/tc.nls.h
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+/* $Header: /p/tcsh/cvsroot/tcsh/tc.nls.h,v 3.13 2006/02/14 14:07:36 christos Exp $ */
+/*
+ * tc.nls.h: NLS support
+ *
+ */
+/*-
+ * Copyright (c) 1980, 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef _h_tc_nls
+#define _h_tc_nls
+
+#include "sh.h"
+
+#ifdef WIDE_STRINGS
+extern int NLSWidth(Char);
+extern int NLSStringWidth (const Char *);
+#else
+# define NLSStringWidth(s) Strlen(s)
+# define NLSWidth(c) 1
+#endif
+
+extern Char *NLSChangeCase (const Char *, int);
+extern int NLSClassify (Char, int);
+
+#define NLSCLASS_CTRL		(-1)
+#define NLSCLASS_TAB		(-2)
+#define NLSCLASS_NL		(-3)
+#define NLSCLASS_ILLEGAL	(-4)
+#define NLSCLASS_ILLEGAL2	(-5)
+#define NLSCLASS_ILLEGAL3	(-6)
+#define NLSCLASS_ILLEGAL4	(-7)
+
+#define NLSCLASS_ILLEGAL_SIZE(x) (-(x) - (-(NLSCLASS_ILLEGAL) - 1))
+
+#endif