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diff --git a/include/shmbutil.h b/include/shmbutil.h
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+/* shmbutil.h -- utility functions for multibyte characters. */
+
+/* Copyright (C) 2002-2004 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 2, or (at your option) any later
+ version.
+
+ Bash 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 General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with Bash; see the file COPYING. If not, write to the Free Software
+ Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
+#if !defined (_SH_MBUTIL_H_)
+#define _SH_MBUTIL_H_
+
+#include "stdc.h"
+
+/* Include config.h for HANDLE_MULTIBYTE */
+#include <config.h>
+
+#if defined (HANDLE_MULTIBYTE)
+
+extern size_t xmbsrtowcs __P((wchar_t *, const char **, size_t, mbstate_t *));
+extern size_t xdupmbstowcs __P((wchar_t **, char ***, const char *));
+
+extern size_t mbstrlen __P((const char *));
+
+extern char *xstrchr __P((const char *, int));
+
+#ifndef MB_INVALIDCH
+#define MB_INVALIDCH(x) ((x) == (size_t)-1 || (x) == (size_t)-2)
+#define MB_NULLWCH(x) ((x) == 0)
+#endif
+
+#define MBSLEN(s) (((s) && (s)[0]) ? ((s)[1] ? mbstrlen (s) : 1) : 0)
+#define MB_STRLEN(s) ((MB_CUR_MAX > 1) ? MBSLEN (s) : STRLEN (s))
+
+#define MBLEN(s, n) ((MB_CUR_MAX > 1) ? mblen ((s), (n)) : 1)
+#define MBRLEN(s, n, p) ((MB_CUR_MAX > 1) ? mbrlen ((s), (n), (p)) : 1)
+
+#else /* !HANDLE_MULTIBYTE */
+
+#undef MB_LEN_MAX
+#undef MB_CUR_MAX
+
+#define MB_LEN_MAX 1
+#define MB_CUR_MAX 1
+
+#undef xstrchr
+#define xstrchr(s, c) strchr(s, c)
+
+#ifndef MB_INVALIDCH
+#define MB_INVALIDCH(x) (0)
+#define MB_NULLWCH(x) (0)
+#endif
+
+#define MB_STRLEN(s) (STRLEN(s))
+
+#define MBLEN(s, n) 1
+#define MBRLEN(s, n, p) 1
+
+#endif /* !HANDLE_MULTIBYTE */
+
+/* Declare and initialize a multibyte state. Call must be terminated
+ with `;'. */
+#if defined (HANDLE_MULTIBYTE)
+# define DECLARE_MBSTATE \
+ mbstate_t state; \
+ memset (&state, '\0', sizeof (mbstate_t))
+#else
+# define DECLARE_MBSTATE
+#endif /* !HANDLE_MULTIBYTE */
+
+/* Initialize or reinitialize a multibyte state named `state'. Call must be
+ terminated with `;'. */
+#if defined (HANDLE_MULTIBYTE)
+# define INITIALIZE_MBSTATE memset (&state, '\0', sizeof (mbstate_t))
+#else
+# define INITIALIZE_MBSTATE
+#endif /* !HANDLE_MULTIBYTE */
+
+/* Advance one (possibly multi-byte) character in string _STR of length
+ _STRSIZE, starting at index _I. STATE must have already been declared. */
+#if defined (HANDLE_MULTIBYTE)
+# define ADVANCE_CHAR(_str, _strsize, _i) \
+ do \
+ { \
+ if (MB_CUR_MAX > 1) \
+ { \
+ mbstate_t state_bak; \
+ size_t mblength; \
+\
+ state_bak = state; \
+ mblength = mbrlen ((_str) + (_i), (_strsize) - (_i), &state); \
+\
+ if (mblength == (size_t)-2 || mblength == (size_t)-1) \
+ { \
+ state = state_bak; \
+ (_i)++; \
+ } \
+ else if (mblength == 0) \
+ (_i)++; \
+ else \
+ (_i) += mblength; \
+ } \
+ else \
+ (_i)++; \
+ } \
+ while (0)
+#else
+# define ADVANCE_CHAR(_str, _strsize, _i) (_i)++
+#endif /* !HANDLE_MULTIBYTE */
+
+/* Advance one (possibly multibyte) character in the string _STR of length
+ _STRSIZE.
+ SPECIAL: assume that _STR will be incremented by 1 after this call. */
+#if defined (HANDLE_MULTIBYTE)
+# define ADVANCE_CHAR_P(_str, _strsize) \
+ do \
+ { \
+ if (MB_CUR_MAX > 1) \
+ { \
+ mbstate_t state_bak; \
+ size_t mblength; \
+\
+ state_bak = state; \
+ mblength = mbrlen ((_str), (_strsize), &state); \
+\
+ if (mblength == (size_t)-2 || mblength == (size_t)-1) \
+ { \
+ state = state_bak; \
+ mblength = 1; \
+ } \
+ else \
+ (_str) += (mblength < 1) ? 0 : (mblength - 1); \
+ } \
+ } \
+ while (0)
+#else
+# define ADVANCE_CHAR_P(_str, _strsize)
+#endif /* !HANDLE_MULTIBYTE */
+
+/* Back up one (possibly multi-byte) character in string _STR of length
+ _STRSIZE, starting at index _I. STATE must have already been declared. */
+#if defined (HANDLE_MULTIBYTE)
+# define BACKUP_CHAR(_str, _strsize, _i) \
+ do \
+ { \
+ if (MB_CUR_MAX > 1) \
+ { \
+ mbstate_t state_bak; \
+ size_t mblength; \
+ int _x, _p; /* _x == temp index into string, _p == prev index */ \
+\
+ _x = _p = 0; \
+ while (_x < (_i)) \
+ { \
+ state_bak = state; \
+ mblength = mbrlen ((_str) + (_x), (_strsize) - (_x), &state); \
+\
+ if (mblength == (size_t)-2 || mblength == (size_t)-1) \
+ { \
+ state = state_bak; \
+ _x++; \
+ } \
+ else if (mblength == 0) \
+ _x++; \
+ else \
+ { \
+ _p = _x; /* _p == start of prev mbchar */ \
+ _x += mblength; \
+ } \
+ } \
+ (_i) = _p; \
+ } \
+ else \
+ (_i)--; \
+ } \
+ while (0)
+#else
+# define BACKUP_CHAR(_str, _strsize, _i) (_i)--
+#endif /* !HANDLE_MULTIBYTE */
+
+/* Back up one (possibly multibyte) character in the string _BASE of length
+ _STRSIZE starting at _STR (_BASE <= _STR <= (_BASE + _STRSIZE) ).
+ SPECIAL: DO NOT assume that _STR will be decremented by 1 after this call. */
+#if defined (HANDLE_MULTIBYTE)
+# define BACKUP_CHAR_P(_base, _strsize, _str) \
+ do \
+ { \
+ if (MB_CUR_MAX > 1) \
+ { \
+ mbstate_t state_bak; \
+ size_t mblength; \
+ char *_x, _p; /* _x == temp pointer into string, _p == prev pointer */ \
+\
+ _x = _p = _base; \
+ while (_x < (_str)) \
+ { \
+ state_bak = state; \
+ mblength = mbrlen (_x, (_strsize) - _x, &state); \
+\
+ if (mblength == (size_t)-2 || mblength == (size_t)-1) \
+ { \
+ state = state_bak; \
+ _x++; \
+ } \
+ else if (mblength == 0) \
+ _x++; \
+ else \
+ { \
+ _p = _x; /* _p == start of prev mbchar */ \
+ _x += mblength; \
+ } \
+ } \
+ (_str) = _p; \
+ } \
+ else \
+ (_str)--; \
+ } \
+ while (0)
+#else
+# define BACKUP_CHAR_P(_base, _strsize, _str) (_str)--
+#endif /* !HANDLE_MULTIBYTE */
+
+/* Copy a single character from the string _SRC to the string _DST.
+ _SRCEND is a pointer to the end of _SRC. */
+#if defined (HANDLE_MULTIBYTE)
+# define COPY_CHAR_P(_dst, _src, _srcend) \
+ do \
+ { \
+ if (MB_CUR_MAX > 1) \
+ { \
+ mbstate_t state_bak; \
+ size_t mblength; \
+ int _k; \
+\
+ state_bak = state; \
+ mblength = mbrlen ((_src), (_srcend) - (_src), &state); \
+ if (mblength == (size_t)-2 || mblength == (size_t)-1) \
+ { \
+ state = state_bak; \
+ mblength = 1; \
+ } \
+ else \
+ mblength = (mblength < 1) ? 1 : mblength; \
+\
+ for (_k = 0; _k < mblength; _k++) \
+ *(_dst)++ = *(_src)++; \
+ } \
+ else \
+ *(_dst)++ = *(_src)++; \
+ } \
+ while (0)
+#else
+# define COPY_CHAR_P(_dst, _src, _srcend) *(_dst)++ = *(_src)++
+#endif /* !HANDLE_MULTIBYTE */
+
+/* Copy a single character from the string _SRC at index _SI to the string
+ _DST at index _DI. _SRCEND is a pointer to the end of _SRC. */
+#if defined (HANDLE_MULTIBYTE)
+# define COPY_CHAR_I(_dst, _di, _src, _srcend, _si) \
+ do \
+ { \
+ if (MB_CUR_MAX > 1) \
+ { \
+ mbstate_t state_bak; \
+ size_t mblength; \
+ int _k; \
+\
+ state_bak = state; \
+ mblength = mbrlen ((_src) + (_si), (_srcend) - ((_src)+(_si)), &state); \
+ if (mblength == (size_t)-2 || mblength == (size_t)-1) \
+ { \
+ state = state_bak; \
+ mblength = 1; \
+ } \
+ else \
+ mblength = (mblength < 1) ? 1 : mblength; \
+\
+ for (_k = 0; _k < mblength; _k++) \
+ _dst[_di++] = _src[_si++]; \
+ } \
+ else \
+ _dst[_di++] = _src[_si++]; \
+ } \
+ while (0)
+#else
+# define COPY_CHAR_I(_dst, _di, _src, _srcend, _si) _dst[_di++] = _src[_si++]
+#endif /* !HANDLE_MULTIBYTE */
+
+/****************************************************************
+ * *
+ * The following are only guaranteed to work in subst.c *
+ * *
+ ****************************************************************/
+
+#if defined (HANDLE_MULTIBYTE)
+# define SCOPY_CHAR_I(_dst, _escchar, _sc, _src, _si, _slen) \
+ do \
+ { \
+ if (MB_CUR_MAX > 1) \
+ { \
+ mbstate_t state_bak; \
+ size_t mblength; \
+ int _i; \
+\
+ state_bak = state; \
+ mblength = mbrlen ((_src) + (_si), (_slen) - (_si), &state); \
+ if (mblength == (size_t)-2 || mblength == (size_t)-1) \
+ { \
+ state = state_bak; \
+ mblength = 1; \
+ } \
+ else \
+ mblength = (mblength < 1) ? 1 : mblength; \
+\
+ temp = xmalloc (mblength + 2); \
+ temp[0] = _escchar; \
+ for (_i = 0; _i < mblength; _i++) \
+ temp[_i + 1] = _src[_si++]; \
+ temp[mblength + 1] = '\0'; \
+\
+ goto add_string; \
+ } \
+ else \
+ { \
+ _dst[0] = _escchar; \
+ _dst[1] = _sc; \
+ } \
+ } \
+ while (0)
+#else
+# define SCOPY_CHAR_I(_dst, _escchar, _sc, _src, _si, _slen) \
+ _dst[0] = _escchar; \
+ _dst[1] = _sc
+#endif /* !HANDLE_MULTIBYTE */
+
+#if defined (HANDLE_MULTIBYTE)
+# define SCOPY_CHAR_M(_dst, _src, _srcend, _si) \
+ do \
+ { \
+ if (MB_CUR_MAX > 1) \
+ { \
+ mbstate_t state_bak; \
+ size_t mblength; \
+\
+ state_bak = state; \
+ mblength = mbrlen ((_src) + (_si), (_srcend) - ((_src) + (_si)), &state); \
+ if (mblength == (size_t)-2 || mblength == (size_t)-1) \
+ { \
+ state = state_bak; \
+ mblength = 1; \
+ } \
+ else \
+ mblength = (mblength < 1) ? 1 : mblength; \
+\
+ FASTCOPY(((_src) + (_si)), (_dst), mblength); \
+\
+ (_dst) += mblength; \
+ (_si) += mblength; \
+ } \
+ else \
+ { \
+ *(_dst)++ = _src[(_si)]; \
+ (_si)++; \
+ } \
+ } \
+ while (0)
+#else
+# define SCOPY_CHAR_M(_dst, _src, _srcend, _si) \
+ *(_dst)++ = _src[(_si)]; \
+ (_si)++
+#endif /* !HANDLE_MULTIBYTE */
+
+#if HANDLE_MULTIBYTE
+# define SADD_MBCHAR(_dst, _src, _si, _srcsize) \
+ do \
+ { \
+ if (MB_CUR_MAX > 1) \
+ { \
+ int i; \
+ mbstate_t state_bak; \
+ size_t mblength; \
+\
+ state_bak = state; \
+ mblength = mbrlen ((_src) + (_si), (_srcsize) - (_si), &state); \
+ if (mblength == (size_t)-1 || mblength == (size_t)-2) \
+ { \
+ state = state_bak; \
+ mblength = 1; \
+ } \
+ if (mblength < 1) \
+ mblength = 1; \
+\
+ _dst = (char *)xmalloc (mblength + 1); \
+ for (i = 0; i < mblength; i++) \
+ (_dst)[i] = (_src)[(_si)++]; \
+ (_dst)[mblength] = '\0'; \
+\
+ goto add_string; \
+ } \
+ } \
+ while (0)
+
+#else
+# define SADD_MBCHAR(_dst, _src, _si, _srcsize)
+#endif
+
+/* Watch out when using this -- it's just straight textual subsitution */
+#if defined (HANDLE_MULTIBYTE)
+# define SADD_MBQCHAR_BODY(_dst, _src, _si, _srcsize) \
+\
+ int i; \
+ mbstate_t state_bak; \
+ size_t mblength; \
+\
+ state_bak = state; \
+ mblength = mbrlen ((_src) + (_si), (_srcsize) - (_si), &state); \
+ if (mblength == (size_t)-1 || mblength == (size_t)-2) \
+ { \
+ state = state_bak; \
+ mblength = 1; \
+ } \
+ if (mblength < 1) \
+ mblength = 1; \
+\
+ (_dst) = (char *)xmalloc (mblength + 2); \
+ (_dst)[0] = CTLESC; \
+ for (i = 0; i < mblength; i++) \
+ (_dst)[i+1] = (_src)[(_si)++]; \
+ (_dst)[mblength+1] = '\0'; \
+\
+ goto add_string
+
+#endif /* HANDLE_MULTIBYTE */
+#endif /* _SH_MBUTIL_H_ */
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