remove old regex implementation

2 files changed, 1 insertions, 8267 deletions

diff --git a/libc/misc/regex/Makefile.in b/libc/misc/regex/Makefile.in
index f95a9f7a3..f0c349466 100644
--- a/libc/misc/regex/Makefile.in
+++ b/libc/misc/regex/Makefile.in
@@ -7,8 +7,7 @@
 
 subdirs += libc/misc/regex
 
-VARIANT := $(if $(UCLIBC_HAS_REGEX_OLD),_old)
-CSRC-y := regex$(VARIANT).c
+CSRC-y := regex.c
 
 MISC_REGEX_DIR := $(top_srcdir)libc/misc/regex
 MISC_REGEX_OUT := $(top_builddir)libc/misc/regex
diff --git a/libc/misc/regex/regex_old.c b/libc/misc/regex/regex_old.c
deleted file mode 100644
index 9d8182ead..000000000
--- a/libc/misc/regex/regex_old.c
+++ /dev/null
@@ -1,8265 +0,0 @@
-/* Extended regular expression matching and search library,
-   version 0.12.
-   (Implements POSIX draft P1003.2/D11.2, except for some of the
-   internationalization features.)
-   Copyright (C) 1993-1999, 2000, 2001 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C 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.
-
-   The GNU C 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 the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-/* To exclude some unwanted junk.... */
-#undef emacs
-#include <features.h>
-/* unistd.h must be included with _LIBC defined: we need smallint */
-#include <unistd.h>
-#include <stdio.h>
-#ifdef __UCLIBC__
-# undef _LIBC
-# define _REGEX_RE_COMP
-# define STDC_HEADERS
-# define __RE_TRANSLATE_TYPE char *
-# define RE_TRANSLATE_TYPE __RE_TRANSLATE_TYPE
-#endif
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-
-/* AIX requires this to be the first thing in the file. */
-#if defined _AIX && !defined REGEX_MALLOC
-# pragma alloca
-#endif
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#ifndef INSIDE_RECURSION
-
-# if defined STDC_HEADERS && !defined emacs
-#  include <stddef.h>
-# else
-/* We need this for `regex.h', and perhaps for the Emacs include files.  */
-#  include <sys/types.h>
-# endif
-
-
-/* For platform which support the ISO C amendement 1 functionality we
-   support user defined character classes.  */
-# if defined __UCLIBC_HAS_WCHAR__
-#  define WIDE_CHAR_SUPPORT 1
-/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.  */
-#  include <wchar.h>
-#  include <wctype.h>
-# endif
-
-# ifdef _LIBC
-/* We have to keep the namespace clean.  */
-
-#  define btowc __btowc
-
-/* We are also using some library internals.  */
-#  include <locale/localeinfo.h>
-#  include <locale/elem-hash.h>
-#  include <langinfo.h>
-#  include <locale/coll-lookup.h>
-# endif
-
-# ifndef gettext
-#  define gettext(msgid) (msgid)
-# endif
-
-# ifndef gettext_noop
-/* This define is so xgettext can find the internationalizable
-   strings.  */
-#  define gettext_noop(String) String
-# endif
-
-/* The `emacs' switch turns on certain matching commands
-   that make sense only in Emacs. */
-# ifdef emacs
-
-#  include "lisp.h"
-#  include "buffer.h"
-#  include "syntax.h"
-
-# else  /* not emacs */
-
-/* If we are not linking with Emacs proper,
-   we can't use the relocating allocator
-   even if config.h says that we can.  */
-#  undef REL_ALLOC
-
-#  if defined STDC_HEADERS || defined _LIBC
-#   include <stdlib.h>
-#  else
-char *malloc ();
-char *realloc ();
-#  endif
-
-/* When used in Emacs's lib-src, we need to get bzero and bcopy somehow.
-   If nothing else has been done, use the method below.  */
-#  ifdef INHIBIT_STRING_HEADER
-#   if !(defined HAVE_BZERO && defined HAVE_BCOPY)
-#    if !defined bzero && !defined bcopy
-#     undef INHIBIT_STRING_HEADER
-#    endif
-#   endif
-#  endif
-
-/* This is the normal way of making sure we have a bcopy and a bzero.
-   This is used in most programs--a few other programs avoid this
-   by defining INHIBIT_STRING_HEADER.  */
-#  ifndef INHIBIT_STRING_HEADER
-#   if defined HAVE_STRING_H || defined STDC_HEADERS || defined _LIBC
-#    include <string.h>
-#    ifndef bzero
-#     ifndef _LIBC
-#      define bzero(s, n)	(memset (s, '\0', n), (s))
-#     else
-#      define bzero(s, n)	__bzero (s, n)
-#     endif
-#    endif
-#   else
-#    include <strings.h>
-#    ifndef memcmp
-#     define memcmp(s1, s2, n)	bcmp (s1, s2, n)
-#    endif
-#    ifndef memcpy
-#     define memcpy(d, s, n)	(bcopy (s, d, n), (d))
-#    endif
-#   endif
-#  endif
-
-/* Define the syntax stuff for \<, \>, etc.  */
-
-/* This must be nonzero for the wordchar and notwordchar pattern
-   commands in re_match_2.  */
-#  ifndef Sword
-#   define Sword 1
-#  endif
-
-#  ifdef SWITCH_ENUM_BUG
-#   define SWITCH_ENUM_CAST(x) ((int)(x))
-#  else
-#   define SWITCH_ENUM_CAST(x) (x)
-#  endif
-
-# endif /* not emacs */
-
-# if defined _LIBC || defined HAVE_LIMITS_H
-#  include <limits.h>
-# endif
-
-# ifndef MB_LEN_MAX
-#  define MB_LEN_MAX 1
-# endif
-
-/* Get the interface, including the syntax bits.  */
-# include <regex.h>
-# define translate __REPB_PREFIX(translate)
-
-/* isalpha etc. are used for the character classes.  */
-# include <ctype.h>
-
-/* Jim Meyering writes:
-
-   "... Some ctype macros are valid only for character codes that
-   isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
-   using /bin/cc or gcc but without giving an ansi option).  So, all
-   ctype uses should be through macros like ISPRINT...  If
-   STDC_HEADERS is defined, then autoconf has verified that the ctype
-   macros don't need to be guarded with references to isascii. ...
-   Defining isascii to 1 should let any compiler worth its salt
-   eliminate the && through constant folding."
-   Solaris defines some of these symbols so we must undefine them first.  */
-
-# undef ISASCII
-# if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
-#  define ISASCII(c) 1
-# else
-#  define ISASCII(c) isascii(c)
-# endif
-
-# ifdef isblank
-#  define ISBLANK(c) (ISASCII (c) && isblank (c))
-# else
-#  define ISBLANK(c) ((c) == ' ' || (c) == '\t')
-# endif
-# ifdef isgraph
-#  define ISGRAPH(c) (ISASCII (c) && isgraph (c))
-# else
-#  define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
-# endif
-
-# undef ISPRINT
-# define ISPRINT(c) (ISASCII (c) && isprint (c))
-# define ISDIGIT(c) (ISASCII (c) && isdigit (c))
-# define ISALNUM(c) (ISASCII (c) && isalnum (c))
-# define ISALPHA(c) (ISASCII (c) && isalpha (c))
-# define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
-# define ISLOWER(c) (ISASCII (c) && islower (c))
-# define ISPUNCT(c) (ISASCII (c) && ispunct (c))
-# define ISSPACE(c) (ISASCII (c) && isspace (c))
-# define ISUPPER(c) (ISASCII (c) && isupper (c))
-# define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
-
-# ifdef _tolower
-#  define TOLOWER(c) _tolower(c)
-# else
-#  define TOLOWER(c) tolower(c)
-# endif
-
-# ifndef NULL
-#  define NULL (void *)0
-# endif
-
-/* We remove any previous definition of `SIGN_EXTEND_CHAR',
-   since ours (we hope) works properly with all combinations of
-   machines, compilers, `char' and `unsigned char' argument types.
-   (Per Bothner suggested the basic approach.)  */
-# undef SIGN_EXTEND_CHAR
-# if __STDC__
-#  define SIGN_EXTEND_CHAR(c) ((signed char) (c))
-# else  /* not __STDC__ */
-/* As in Harbison and Steele.  */
-#  define SIGN_EXTEND_CHAR(c) ((((unsigned char) (c)) ^ 128) - 128)
-# endif
-
-# ifndef emacs
-/* How many characters in the character set.  */
-#  define CHAR_SET_SIZE 256
-
-#  ifdef SYNTAX_TABLE
-
-extern char *re_syntax_table;
-
-#  else /* not SYNTAX_TABLE */
-
-static char re_syntax_table[CHAR_SET_SIZE];
-
-static void init_syntax_once (void);
-
-static void
-init_syntax_once (void)
-{
-   register int c;
-   static smallint done = 0;
-
-   if (done)
-     return;
-   bzero (re_syntax_table, sizeof re_syntax_table);
-
-   for (c = 0; c < CHAR_SET_SIZE; ++c)
-     if (ISALNUM (c))
-	re_syntax_table[c] = Sword;
-
-   re_syntax_table['_'] = Sword;
-
-   done = 1;
-}
-
-#  endif /* not SYNTAX_TABLE */
-
-#  define SYNTAX(c) re_syntax_table[(unsigned char) (c)]
-
-# endif /* emacs */
-
-/* Integer type for pointers.  */
-# if !defined _LIBC && !defined __intptr_t_defined
-typedef unsigned long int uintptr_t;
-# endif
-
-/* Should we use malloc or alloca?  If REGEX_MALLOC is not defined, we
-   use `alloca' instead of `malloc'.  This is because using malloc in
-   re_search* or re_match* could cause memory leaks when C-g is used in
-   Emacs; also, malloc is slower and causes storage fragmentation.  On
-   the other hand, malloc is more portable, and easier to debug.
-
-   Because we sometimes use alloca, some routines have to be macros,
-   not functions -- `alloca'-allocated space disappears at the end of the
-   function it is called in.  */
-
-# ifdef REGEX_MALLOC
-
-#  define REGEX_ALLOCATE malloc
-#  define REGEX_REALLOCATE(source, osize, nsize) realloc (source, nsize)
-#  define REGEX_FREE free
-
-# else /* not REGEX_MALLOC  */
-
-/* Emacs already defines alloca, sometimes.  */
-#  ifndef alloca
-
-/* Make alloca work the best possible way.  */
-#   ifdef __GNUC__
-#    define alloca __builtin_alloca
-#   else /* not __GNUC__ */
-#    if HAVE_ALLOCA_H
-#     include <alloca.h>
-#    endif /* HAVE_ALLOCA_H */
-#   endif /* not __GNUC__ */
-
-#  endif /* not alloca */
-
-#  define REGEX_ALLOCATE alloca
-
-/* Assumes a `char *destination' variable.  */
-#  define REGEX_REALLOCATE(source, osize, nsize)			\
-  (destination = (char *) alloca (nsize),				\
-   memcpy (destination, source, osize))
-
-/* No need to do anything to free, after alloca.  */
-#  define REGEX_FREE(arg) ((void)0) /* Do nothing!  But inhibit gcc warning.  */
-
-# endif /* not REGEX_MALLOC */
-
-/* Define how to allocate the failure stack.  */
-
-# if defined REL_ALLOC && defined REGEX_MALLOC
-
-#  define REGEX_ALLOCATE_STACK(size)				\
-  r_alloc (&failure_stack_ptr, (size))
-#  define REGEX_REALLOCATE_STACK(source, osize, nsize)		\
-  r_re_alloc (&failure_stack_ptr, (nsize))
-#  define REGEX_FREE_STACK(ptr)					\
-  r_alloc_free (&failure_stack_ptr)
-
-# else /* not using relocating allocator */
-
-#  ifdef REGEX_MALLOC
-
-#   define REGEX_ALLOCATE_STACK malloc
-#   define REGEX_REALLOCATE_STACK(source, osize, nsize) realloc (source, nsize)
-#   define REGEX_FREE_STACK free
-
-#  else /* not REGEX_MALLOC */
-
-#   define REGEX_ALLOCATE_STACK alloca
-
-#   define REGEX_REALLOCATE_STACK(source, osize, nsize)			\
-   REGEX_REALLOCATE (source, osize, nsize)
-/* No need to explicitly free anything.  */
-#   define REGEX_FREE_STACK(arg)
-
-#  endif /* not REGEX_MALLOC */
-# endif /* not using relocating allocator */
-
-
-/* True if `size1' is non-NULL and PTR is pointing anywhere inside
-   `string1' or just past its end.  This works if PTR is NULL, which is
-   a good thing.  */
-# define FIRST_STRING_P(ptr) 					\
-  (size1 && string1 <= (ptr) && (ptr) <= string1 + size1)
-
-/* (Re)Allocate N items of type T using malloc, or fail.  */
-# define TALLOC(n, t) ((t *) malloc ((n) * sizeof (t)))
-# define RETALLOC(addr, n, t) ((addr) = (t *) realloc (addr, (n) * sizeof (t)))
-# define RETALLOC_IF(addr, n, t) \
-  if (addr) RETALLOC((addr), (n), t); else (addr) = TALLOC ((n), t)
-# define REGEX_TALLOC(n, t) ((t *) REGEX_ALLOCATE ((n) * sizeof (t)))
-
-# define BYTEWIDTH 8 /* In bits.  */
-
-# define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
-
-# undef MAX
-# undef MIN
-# define MAX(a, b) ((a) > (b) ? (a) : (b))
-# define MIN(a, b) ((a) < (b) ? (a) : (b))
-
-typedef char boolean;
-# define false 0
-# define true 1
-
-static reg_errcode_t byte_regex_compile (const char *pattern, size_t size,
-                                                   reg_syntax_t syntax,
-                                                   struct re_pattern_buffer *bufp);
-
-static int byte_re_match_2_internal (struct re_pattern_buffer *bufp,
-					     const char *string1, int size1,
-					     const char *string2, int size2,
-					     int pos,
-					     struct re_registers *regs,
-					     int stop);
-static int byte_re_search_2 (struct re_pattern_buffer *bufp,
-				     const char *string1, int size1,
-				     const char *string2, int size2,
-				     int startpos, int range,
-				     struct re_registers *regs, int stop);
-static int byte_re_compile_fastmap (struct re_pattern_buffer *bufp);
-
-#ifdef MBS_SUPPORT
-static reg_errcode_t wcs_regex_compile (const char *pattern, size_t size,
-                                                   reg_syntax_t syntax,
-                                                   struct re_pattern_buffer *bufp);
-
-
-static int wcs_re_match_2_internal (struct re_pattern_buffer *bufp,
-					    const char *cstring1, int csize1,
-					    const char *cstring2, int csize2,
-					    int pos,
-					    struct re_registers *regs,
-					    int stop,
-					    wchar_t *string1, int size1,
-					    wchar_t *string2, int size2,
-					    int *mbs_offset1, int *mbs_offset2);
-static int wcs_re_search_2 (struct re_pattern_buffer *bufp,
-				    const char *string1, int size1,
-				    const char *string2, int size2,
-				    int startpos, int range,
-				    struct re_registers *regs, int stop);
-static int wcs_re_compile_fastmap (struct re_pattern_buffer *bufp);
-#endif
-
-/* These are the command codes that appear in compiled regular
-   expressions.  Some opcodes are followed by argument bytes.  A
-   command code can specify any interpretation whatsoever for its
-   arguments.  Zero bytes may appear in the compiled regular expression.  */
-
-typedef enum
-{
-  no_op = 0,
-
-  /* Succeed right away--no more backtracking.  */
-  succeed,
-
-        /* Followed by one byte giving n, then by n literal bytes.  */
-  exactn,
-
-# ifdef MBS_SUPPORT
-	/* Same as exactn, but contains binary data.  */
-  exactn_bin,
-# endif
-
-        /* Matches any (more or less) character.  */
-  anychar,
-
-        /* Matches any one char belonging to specified set.  First
-           following byte is number of bitmap bytes.  Then come bytes
-           for a bitmap saying which chars are in.  Bits in each byte
-           are ordered low-bit-first.  A character is in the set if its
-           bit is 1.  A character too large to have a bit in the map is
-           automatically not in the set.  */
-        /* ifdef MBS_SUPPORT, following element is length of character
-	   classes, length of collating symbols, length of equivalence
-	   classes, length of character ranges, and length of characters.
-	   Next, character class element, collating symbols elements,
-	   equivalence class elements, range elements, and character
-	   elements follow.
-	   See regex_compile function.  */
-  charset,
-
-        /* Same parameters as charset, but match any character that is
-           not one of those specified.  */
-  charset_not,
-
-        /* Start remembering the text that is matched, for storing in a
-           register.  Followed by one byte with the register number, in
-           the range 0 to one less than the pattern buffer's re_nsub
-           field.  Then followed by one byte with the number of groups
-           inner to this one.  (This last has to be part of the
-           start_memory only because we need it in the on_failure_jump
-           of re_match_2.)  */
-  start_memory,
-
-        /* Stop remembering the text that is matched and store it in a
-           memory register.  Followed by one byte with the register
-           number, in the range 0 to one less than `re_nsub' in the
-           pattern buffer, and one byte with the number of inner groups,
-           just like `start_memory'.  (We need the number of inner
-           groups here because we don't have any easy way of finding the
-           corresponding start_memory when we're at a stop_memory.)  */
-  stop_memory,
-
-        /* Match a duplicate of something remembered. Followed by one
-           byte containing the register number.  */
-  duplicate,
-
-        /* Fail unless at beginning of line.  */
-  begline,
-
-        /* Fail unless at end of line.  */
-  endline,
-
-        /* Succeeds if at beginning of buffer (if emacs) or at beginning
-           of string to be matched (if not).  */
-  begbuf,
-
-        /* Analogously, for end of buffer/string.  */
-  endbuf,
-
-        /* Followed by two byte relative address to which to jump.  */
-  jump,
-
-	/* Same as jump, but marks the end of an alternative.  */
-  jump_past_alt,
-
-        /* Followed by two-byte relative address of place to resume at
-           in case of failure.  */
-        /* ifdef MBS_SUPPORT, the size of address is 1.  */
-  on_failure_jump,
-
-        /* Like on_failure_jump, but pushes a placeholder instead of the
-           current string position when executed.  */
-  on_failure_keep_string_jump,
-
-        /* Throw away latest failure point and then jump to following
-           two-byte relative address.  */
-        /* ifdef MBS_SUPPORT, the size of address is 1.  */
-  pop_failure_jump,
-
-        /* Change to pop_failure_jump if know won't have to backtrack to
-           match; otherwise change to jump.  This is used to jump
-           back to the beginning of a repeat.  If what follows this jump
-           clearly won't match what the repeat does, such that we can be
-           sure that there is no use backtracking out of repetitions
-           already matched, then we change it to a pop_failure_jump.
-           Followed by two-byte address.  */
-        /* ifdef MBS_SUPPORT, the size of address is 1.  */
-  maybe_pop_jump,
-
-        /* Jump to following two-byte address, and push a dummy failure
-           point. This failure point will be thrown away if an attempt
-           is made to use it for a failure.  A `+' construct makes this
-           before the first repeat.  Also used as an intermediary kind
-           of jump when compiling an alternative.  */
-        /* ifdef MBS_SUPPORT, the size of address is 1.  */
-  dummy_failure_jump,
-
-	/* Push a dummy failure point and continue.  Used at the end of
-	   alternatives.  */
-  push_dummy_failure,
-
-        /* Followed by two-byte relative address and two-byte number n.
-           After matching N times, jump to the address upon failure.  */
-        /* ifdef MBS_SUPPORT, the size of address is 1.  */
-  succeed_n,
-
-        /* Followed by two-byte relative address, and two-byte number n.
-           Jump to the address N times, then fail.  */
-        /* ifdef MBS_SUPPORT, the size of address is 1.  */
-  jump_n,
-
-        /* Set the following two-byte relative address to the
-           subsequent two-byte number.  The address *includes* the two
-           bytes of number.  */
-        /* ifdef MBS_SUPPORT, the size of address is 1.  */
-  set_number_at,
-
-  wordchar,	/* Matches any word-constituent character.  */
-  notwordchar,	/* Matches any char that is not a word-constituent.  */
-
-  wordbeg,	/* Succeeds if at word beginning.  */
-  wordend,	/* Succeeds if at word end.  */
-
-  wordbound,	/* Succeeds if at a word boundary.  */
-  notwordbound	/* Succeeds if not at a word boundary.  */
-
-# ifdef emacs
-  ,before_dot,	/* Succeeds if before point.  */
-  at_dot,	/* Succeeds if at point.  */
-  after_dot,	/* Succeeds if after point.  */
-
-	/* Matches any character whose syntax is specified.  Followed by
-           a byte which contains a syntax code, e.g., Sword.  */
-  syntaxspec,
-
-	/* Matches any character whose syntax is not that specified.  */
-  notsyntaxspec
-# endif /* emacs */
-} re_opcode_t;
-#endif /* not INSIDE_RECURSION */
-
-
-#ifdef BYTE
-# define CHAR_T char
-# define UCHAR_T unsigned char
-# define COMPILED_BUFFER_VAR bufp->buffer
-# define OFFSET_ADDRESS_SIZE 2
-# define PREFIX(name) byte_##name
-# define ARG_PREFIX(name) name
-# define PUT_CHAR(c) putchar (c)
-#else
-# ifdef WCHAR
-#  define CHAR_T wchar_t
-#  define UCHAR_T wchar_t
-#  define COMPILED_BUFFER_VAR wc_buffer
-#  define OFFSET_ADDRESS_SIZE 1 /* the size which STORE_NUMBER macro use */
-#  define CHAR_CLASS_SIZE ((__alignof__(wctype_t)+sizeof(wctype_t))/sizeof(CHAR_T)+1)
-#  define PREFIX(name) wcs_##name
-#  define ARG_PREFIX(name) c##name
-/* Should we use wide stream??  */
-#  define PUT_CHAR(c) printf ("%C", c);
-#  define TRUE 1
-#  define FALSE 0
-# else
-#  ifdef MBS_SUPPORT
-#   define WCHAR
-#   define INSIDE_RECURSION
-#   include "regex_old.c"
-#   undef INSIDE_RECURSION
-#  endif
-#  define BYTE
-#  define INSIDE_RECURSION
-#  include "regex_old.c"
-#  undef INSIDE_RECURSION
-# endif
-#endif
-
-#ifdef INSIDE_RECURSION
-/* Common operations on the compiled pattern.  */
-
-/* Store NUMBER in two contiguous bytes starting at DESTINATION.  */
-/* ifdef MBS_SUPPORT, we store NUMBER in 1 element.  */
-
-# ifdef WCHAR
-#  define STORE_NUMBER(destination, number)				\
-  do {									\
-    *(destination) = (UCHAR_T)(number);				\
-  } while (0)
-# else /* BYTE */
-#  define STORE_NUMBER(destination, number)				\
-  do {									\
-    (destination)[0] = (number) & 0377;					\
-    (destination)[1] = (number) >> 8;					\
-  } while (0)
-# endif /* WCHAR */
-
-/* Same as STORE_NUMBER, except increment DESTINATION to
-   the byte after where the number is stored.  Therefore, DESTINATION
-   must be an lvalue.  */
-/* ifdef MBS_SUPPORT, we store NUMBER in 1 element.  */
-
-# define STORE_NUMBER_AND_INCR(destination, number)			\
-  do {									\
-    STORE_NUMBER (destination, number);					\
-    (destination) += OFFSET_ADDRESS_SIZE;				\
-  } while (0)
-
-/* Put into DESTINATION a number stored in two contiguous bytes starting
-   at SOURCE.  */
-/* ifdef MBS_SUPPORT, we store NUMBER in 1 element.  */
-
-# ifdef WCHAR
-#  define EXTRACT_NUMBER(destination, source)				\
-  do {									\
-    (destination) = *(source);						\
-  } while (0)
-# else /* BYTE */
-#  define EXTRACT_NUMBER(destination, source)				\
-  do {									\
-    (destination) = *(source) & 0377;					\
-    (destination) += SIGN_EXTEND_CHAR (*((source) + 1)) << 8;		\
-  } while (0)
-# endif
-
-# ifdef DEBUG
-static void PREFIX(extract_number) (int *dest, UCHAR_T *source)
-{
-#  ifdef WCHAR
-  *dest = *source;
-#  else /* BYTE */
-  int temp = SIGN_EXTEND_CHAR (*(source + 1));
-  *dest = *source & 0377;
-  *dest += temp << 8;
-#  endif
-}
-
-#  ifndef EXTRACT_MACROS /* To debug the macros.  */
-#   undef EXTRACT_NUMBER
-#   define EXTRACT_NUMBER(dest, src) PREFIX(extract_number) (&dest, src)
-#  endif /* not EXTRACT_MACROS */
-
-# endif /* DEBUG */
-
-/* Same as EXTRACT_NUMBER, except increment SOURCE to after the number.
-   SOURCE must be an lvalue.  */
-
-# define EXTRACT_NUMBER_AND_INCR(destination, source)			\
-  do {									\
-    EXTRACT_NUMBER (destination, source);				\
-    (source) += OFFSET_ADDRESS_SIZE; 					\
-  } while (0)
-
-# ifdef DEBUG
-static void PREFIX(extract_number_and_incr) (int *destination,
-						       UCHAR_T **source)
-{
-  PREFIX(extract_number) (destination, *source);
-  *source += OFFSET_ADDRESS_SIZE;
-}
-
-#  ifndef EXTRACT_MACROS
-#   undef EXTRACT_NUMBER_AND_INCR
-#   define EXTRACT_NUMBER_AND_INCR(dest, src) \
-  PREFIX(extract_number_and_incr) (&dest, &src)
-#  endif /* not EXTRACT_MACROS */
-
-# endif /* DEBUG */
-
-
-
-/* If DEBUG is defined, Regex prints many voluminous messages about what
-   it is doing (if the variable `debug' is nonzero).  If linked with the
-   main program in `iregex.c', you can enter patterns and strings
-   interactively.  And if linked with the main program in `main.c' and
-   the other test files, you can run the already-written tests.  */
-
-# ifdef DEBUG
-
-#  ifndef DEFINED_ONCE
-
-/* We use standard I/O for debugging.  */
-#   include <stdio.h>
-
-/* It is useful to test things that ``must'' be true when debugging.  */
-#   include <assert.h>
-
-static smallint debug;
-
-#   define DEBUG_STATEMENT(e) e
-#   define DEBUG_PRINT1(x) if (debug) printf (x)
-#   define DEBUG_PRINT2(x1, x2) if (debug) printf (x1, x2)
-#   define DEBUG_PRINT3(x1, x2, x3) if (debug) printf (x1, x2, x3)
-#   define DEBUG_PRINT4(x1, x2, x3, x4) if (debug) printf (x1, x2, x3, x4)
-#  endif /* not DEFINED_ONCE */
-
-#  define DEBUG_PRINT_COMPILED_PATTERN(p, s, e) 			\
-  if (debug) PREFIX(print_partial_compiled_pattern) (s, e)
-#  define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2)		\
-  if (debug) PREFIX(print_double_string) (w, s1, sz1, s2, sz2)
-
-
-/* Print the fastmap in human-readable form.  */
-
-#  ifndef DEFINED_ONCE
-static void
-print_fastmap (char *fastmap)
-{
-  unsigned was_a_range = 0;
-  unsigned i = 0;
-
-  while (i < (1 << BYTEWIDTH))
-    {
-      if (fastmap[i++])
-	{
-	  was_a_range = 0;
-          putchar (i - 1);
-          while (i < (1 << BYTEWIDTH)  &&  fastmap[i])
-            {
-              was_a_range = 1;
-              i++;
-            }
-	  if (was_a_range)
-            {
-              printf ("-");
-              putchar (i - 1);
-            }
-        }
-    }
-  putchar ('\n');
-}
-#  endif /* not DEFINED_ONCE */
-
-
-/* Print a compiled pattern string in human-readable form, starting at
-   the START pointer into it and ending just before the pointer END.  */
-
-static void
-PREFIX(print_partial_compiled_pattern) (UCHAR_T *start, UCHAR_T *end)
-{
-  int mcnt, mcnt2;
-  UCHAR_T *p1;
-  UCHAR_T *p = start;
-  UCHAR_T *pend = end;
-
-  if (start == NULL)
-    {
-      printf ("(null)\n");
-      return;
-    }
-
-  /* Loop over pattern commands.  */
-  while (p < pend)
-    {
-#  ifdef _LIBC
-      printf ("%td:\t", p - start);
-#  else
-      printf ("%ld:\t", (long int) (p - start));
-#  endif
-
-      switch ((re_opcode_t) *p++)
-	{
-        case no_op:
-          printf ("/no_op");
-          break;
-
-	case exactn:
-	  mcnt = *p++;
-          printf ("/exactn/%d", mcnt);
-          do
-	    {
-              putchar ('/');
-	      PUT_CHAR (*p++);
-            }
-          while (--mcnt);
-          break;
-
-#  ifdef MBS_SUPPORT
-	case exactn_bin:
-	  mcnt = *p++;
-	  printf ("/exactn_bin/%d", mcnt);
-          do
-	    {
-	      printf("/%lx", (long int) *p++);
-            }
-          while (--mcnt);
-          break;
-#  endif /* MBS_SUPPORT */
-
-	case start_memory:
-          mcnt = *p++;
-          printf ("/start_memory/%d/%ld", mcnt, (long int) *p++);
-          break;
-
-	case stop_memory:
-          mcnt = *p++;
-	  printf ("/stop_memory/%d/%ld", mcnt, (long int) *p++);
-          break;
-
-	case duplicate:
-	  printf ("/duplicate/%ld", (long int) *p++);
-	  break;
-
-	case anychar:
-	  printf ("/anychar");
-	  break;
-
-	case charset:
-        case charset_not:
-          {
-#  ifdef WCHAR
-	    int i, length;
-	    wchar_t *workp = p;
-	    printf ("/charset [%s",
-	            (re_opcode_t) *(workp - 1) == charset_not ? "^" : "");
-	    p += 5;
-	    length = *workp++; /* the length of char_classes */
-	    for (i=0 ; i<length ; i++)
-	      printf("[:%lx:]", (long int) *p++);
-	    length = *workp++; /* the length of collating_symbol */
-	    for (i=0 ; i<length ;)
-	      {
-		printf("[.");
-		while(*p != 0)
-		  PUT_CHAR((i++,*p++));
-		i++,p++;
-		printf(".]");
-	      }
-	    length = *workp++; /* the length of equivalence_class */
-	    for (i=0 ; i<length ;)
-	      {
-		printf("[=");
-		while(*p != 0)
-		  PUT_CHAR((i++,*p++));
-		i++,p++;
-		printf("=]");
-	      }
-	    length = *workp++; /* the length of char_range */
-	    for (i=0 ; i<length ; i++)
-	      {
-		wchar_t range_start = *p++;
-		wchar_t range_end = *p++;
-		printf("%C-%C", range_start, range_end);
-	      }
-	    length = *workp++; /* the length of char */
-	    for (i=0 ; i<length ; i++)
-	      printf("%C", *p++);
-	    putchar (']');
-#  else
-            register int c, last = -100;
-	    register int in_range = 0;
-
-	    printf ("/charset [%s",
-	            (re_opcode_t) *(p - 1) == charset_not ? "^" : "");
-
-            assert (p + *p < pend);
-
-            for (c = 0; c < 256; c++)
-	      if (c / 8 < *p
-		  && (p[1 + (c/8)] & (1 << (c % 8))))
-		{
-		  /* Are we starting a range?  */
-		  if (last + 1 == c && ! in_range)
-		    {
-		      putchar ('-');
-		      in_range = 1;
-		    }
-		  /* Have we broken a range?  */
-		  else if (last + 1 != c && in_range)
-              {
-		      putchar (last);
-		      in_range = 0;
-		    }
-
-		  if (! in_range)
-		    putchar (c);
-
-		  last = c;
-              }
-
-	    if (in_range)
-	      putchar (last);
-
-	    putchar (']');
-
-	    p += 1 + *p;
-#  endif /* WCHAR */
-	  }
-	  break;
-
-	case begline:
-	  printf ("/begline");
-          break;
-
-	case endline:
-          printf ("/endline");
-          break;
-
-	case on_failure_jump:
-          PREFIX(extract_number_and_incr) (&mcnt, &p);
-#  ifdef _LIBC
-  	  printf ("/on_failure_jump to %td", p + mcnt - start);
-#  else
-  	  printf ("/on_failure_jump to %ld", (long int) (p + mcnt - start));
-#  endif
-          break;
-
-	case on_failure_keep_string_jump:
-          PREFIX(extract_number_and_incr) (&mcnt, &p);
-#  ifdef _LIBC
-  	  printf ("/on_failure_keep_string_jump to %td", p + mcnt - start);
-#  else
-  	  printf ("/on_failure_keep_string_jump to %ld",
-		  (long int) (p + mcnt - start));
-#  endif
-          break;
-
-	case dummy_failure_jump:
-          PREFIX(extract_number_and_incr) (&mcnt, &p);
-#  ifdef _LIBC
-  	  printf ("/dummy_failure_jump to %td", p + mcnt - start);
-#  else
-  	  printf ("/dummy_failure_jump to %ld", (long int) (p + mcnt - start));
-#  endif
-          break;
-
-	case push_dummy_failure:
-          printf ("/push_dummy_failure");
-          break;
-
-        case maybe_pop_jump:
-          PREFIX(extract_number_and_incr) (&mcnt, &p);
-#  ifdef _LIBC
-  	  printf ("/maybe_pop_jump to %td", p + mcnt - start);
-#  else
-  	  printf ("/maybe_pop_jump to %ld", (long int) (p + mcnt - start));
-#  endif
-	  break;
-
-        case pop_failure_jump:
-	  PREFIX(extract_number_and_incr) (&mcnt, &p);
-#  ifdef _LIBC
-  	  printf ("/pop_failure_jump to %td", p + mcnt - start);
-#  else
-  	  printf ("/pop_failure_jump to %ld", (long int) (p + mcnt - start));
-#  endif
-	  break;
-
-        case jump_past_alt:
-	  PREFIX(extract_number_and_incr) (&mcnt, &p);
-#  ifdef _LIBC
-  	  printf ("/jump_past_alt to %td", p + mcnt - start);
-#  else
-  	  printf ("/jump_past_alt to %ld", (long int) (p + mcnt - start));
-#  endif
-	  break;
-
-        case jump:
-	  PREFIX(extract_number_and_incr) (&mcnt, &p);
-#  ifdef _LIBC
-  	  printf ("/jump to %td", p + mcnt - start);
-#  else
-  	  printf ("/jump to %ld", (long int) (p + mcnt - start));
-#  endif
-	  break;
-
-        case succeed_n:
-          PREFIX(extract_number_and_incr) (&mcnt, &p);
-	  p1 = p + mcnt;
-          PREFIX(extract_number_and_incr) (&mcnt2, &p);
-#  ifdef _LIBC
-	  printf ("/succeed_n to %td, %d times", p1 - start, mcnt2);
-#  else
-	  printf ("/succeed_n to %ld, %d times",
-		  (long int) (p1 - start), mcnt2);
-#  endif
-          break;
-
-        case jump_n:
-          PREFIX(extract_number_and_incr) (&mcnt, &p);
-	  p1 = p + mcnt;
-          PREFIX(extract_number_and_incr) (&mcnt2, &p);
-	  printf ("/jump_n to %d, %d times", p1 - start, mcnt2);
-          break;
-
-        case set_number_at:
-          PREFIX(extract_number_and_incr) (&mcnt, &p);
-	  p1 = p + mcnt;
-          PREFIX(extract_number_and_incr) (&mcnt2, &p);
-#  ifdef _LIBC
-	  printf ("/set_number_at location %td to %d", p1 - start, mcnt2);
-#  else
-	  printf ("/set_number_at location %ld to %d",
-		  (long int) (p1 - start), mcnt2);
-#  endif
-          break;
-
-        case wordbound:
-	  printf ("/wordbound");
-	  break;
-
-	case notwordbound:
-	  printf ("/notwordbound");
-          break;
-
-	case wordbeg:
-	  printf ("/wordbeg");
-	  break;
-
-	case wordend:
-	  printf ("/wordend");
-	  break;
-
-#  ifdef emacs
-	case before_dot:
-	  printf ("/before_dot");
-          break;
-
-	case at_dot:
-	  printf ("/at_dot");
-          break;
-
-	case after_dot:
-	  printf ("/after_dot");
-          break;
-
-	case syntaxspec:
-          printf ("/syntaxspec");
-	  mcnt = *p++;
-	  printf ("/%d", mcnt);
-          break;
-
-	case notsyntaxspec:
-          printf ("/notsyntaxspec");
-	  mcnt = *p++;
-	  printf ("/%d", mcnt);
-	  break;
-#  endif /* emacs */
-
-	case wordchar:
-	  printf ("/wordchar");
-          break;
-
-	case notwordchar:
-	  printf ("/notwordchar");
-          break;
-
-	case begbuf:
-	  printf ("/begbuf");
-          break;
-
-	case endbuf:
-	  printf ("/endbuf");
-          break;
-
-        default:
-          printf ("?%ld", (long int) *(p-1));
-	}
-
-      putchar ('\n');
-    }
-
-#  ifdef _LIBC
-  printf ("%td:\tend of pattern.\n", p - start);
-#  else
-  printf ("%ld:\tend of pattern.\n", (long int) (p - start));
-#  endif
-}
-
-
-static void
-PREFIX(print_compiled_pattern) (struct re_pattern_buffer *bufp)
-{
-  UCHAR_T *buffer = (UCHAR_T*) bufp->buffer;
-
-  PREFIX(print_partial_compiled_pattern) (buffer, buffer
-				  + bufp->used / sizeof(UCHAR_T));
-  printf ("%ld bytes used/%ld bytes allocated.\n",
-	  bufp->used, bufp->allocated);
-
-  if (bufp->fastmap_accurate && bufp->fastmap)
-    {
-      printf ("fastmap: ");
-      print_fastmap (bufp->fastmap);
-    }
-
-#  ifdef _LIBC
-  printf ("re_nsub: %Zd\t", bufp->re_nsub);
-#  else
-  printf ("re_nsub: %ld\t", (long int) bufp->re_nsub);
-#  endif
-  printf ("regs_alloc: %d\t", bufp->regs_allocated);
-  printf ("can_be_null: %d\t", bufp->can_be_null);
-  printf ("newline_anchor: %d\n", bufp->newline_anchor);
-  printf ("no_sub: %d\t", bufp->no_sub);
-  printf ("not_bol: %d\t", bufp->not_bol);
-  printf ("not_eol: %d\t", bufp->not_eol);
-  printf ("syntax: %lx\n", bufp->syntax);
-  /* Perhaps we should print the translate table?  */
-}
-
-
-static void
-PREFIX(print_double_string) (
-    const CHAR_T *where,
-    const CHAR_T *string1,
-    int size1,
-    const CHAR_T *string2,
-    int size2)
-{
-  int this_char;
-
-  if (where == NULL)
-    printf ("(null)");
-  else
-    {
-      int cnt;
-
-      if (FIRST_STRING_P (where))
-        {
-          for (this_char = where - string1; this_char < size1; this_char++)
-	    PUT_CHAR (string1[this_char]);
-
-          where = string2;
-        }
-
-      cnt = 0;
-      for (this_char = where - string2; this_char < size2; this_char++)
-	{
-	  PUT_CHAR (string2[this_char]);
-	  if (++cnt > 100)
-	    {
-	      fputs ("...", stdout);
-	      break;
-	    }
-	}
-    }
-}
-
-#  if 0 /* ndef DEFINED_ONCE */
-void
-printchar (int c)
-{
-  putc (c, stderr);
-}
-#  endif
-
-# else /* not DEBUG */
-
-#  ifndef DEFINED_ONCE
-#   undef assert
-#   define assert(e)
-
-#   define DEBUG_STATEMENT(e)
-#   define DEBUG_PRINT1(x)
-#   define DEBUG_PRINT2(x1, x2)
-#   define DEBUG_PRINT3(x1, x2, x3)
-#   define DEBUG_PRINT4(x1, x2, x3, x4)
-#  endif /* not DEFINED_ONCE */
-#  define DEBUG_PRINT_COMPILED_PATTERN(p, s, e)
-#  define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2)
-
-# endif /* not DEBUG */
-
-
-
-# ifdef WCHAR
-/* This  convert a multibyte string to a wide character string.
-   And write their correspondances to offset_buffer(see below)
-   and write whether each wchar_t is binary data to is_binary.
-   This assume invalid multibyte sequences as binary data.
-   We assume offset_buffer and is_binary is already allocated
-   enough space.  */
-
-static size_t
-convert_mbs_to_wcs (
-     CHAR_T *dest,
-     const unsigned char* src,
-     size_t len, /* the length of multibyte string.  */
-
-     /* It hold correspondances between src(char string) and
-	dest(wchar_t string) for optimization.
-	e.g. src  = "xxxyzz"
-             dest = {'X', 'Y', 'Z'}
-	      (each "xxx", "y" and "zz" represent one multibyte character
-	       corresponding to 'X', 'Y' and 'Z'.)
-	  offset_buffer = {0, 0+3("xxx"), 0+3+1("y"), 0+3+1+2("zz")}
-	  	        = {0, 3, 4, 6}
-     */
-     int *offset_buffer,
-     char *is_binary)
-{
-  wchar_t *pdest = dest;
-  const unsigned char *psrc = src;
-  size_t wc_count = 0;
-
-  mbstate_t mbs;
-  int i, consumed;
-  size_t mb_remain = len;
-  size_t mb_count = 0;
-
-  /* Initialize the conversion state.  */
-  memset (&mbs, 0, sizeof (mbstate_t));
-
-  offset_buffer[0] = 0;
-  for( ; mb_remain > 0 ; ++wc_count, ++pdest, mb_remain -= consumed,
-	 psrc += consumed)
-    {
-#ifdef _LIBC
-      consumed = __mbrtowc (pdest, psrc, mb_remain, &mbs);
-#else
-      consumed = mbrtowc (pdest, psrc, mb_remain, &mbs);
-#endif
-
-      if (consumed <= 0)
-	/* failed to convert. maybe src contains binary data.
-	   So we consume 1 byte manualy.  */
-	{
-	  *pdest = *psrc;
-	  consumed = 1;
-	  is_binary[wc_count] = TRUE;
-	}
-      else
-	is_binary[wc_count] = FALSE;
-      /* In sjis encoding, we use yen sign as escape character in
-	 place of reverse solidus. So we convert 0x5c(yen sign in
-	 sjis) to not 0xa5(yen sign in UCS2) but 0x5c(reverse
-	 solidus in UCS2).  */
-      if (consumed == 1 && (int) *psrc == 0x5c && (int) *pdest == 0xa5)
-	*pdest = (wchar_t) *psrc;
-
-      offset_buffer[wc_count + 1] = mb_count += consumed;
-    }
-
-  /* Fill remain of the buffer with sentinel.  */
-  for (i = wc_count + 1 ; i <= len ; i++)
-    offset_buffer[i] = mb_count + 1;
-
-  return wc_count;
-}
-
-# endif /* WCHAR */
-
-#else /* not INSIDE_RECURSION */
-
-/* Set by `re_set_syntax' to the current regexp syntax to recognize.  Can
-   also be assigned to arbitrarily: each pattern buffer stores its own
-   syntax, so it can be changed between regex compilations.  */
-/* This has no initializer because initialized variables in Emacs
-   become read-only after dumping.  */
-reg_syntax_t re_syntax_options;
-
-
-/* Specify the precise syntax of regexps for compilation.  This provides
-   for compatibility for various utilities which historically have
-   different, incompatible syntaxes.
-
-   The argument SYNTAX is a bit mask comprised of the various bits
-   defined in regex.h.  We return the old syntax.  */
-
-reg_syntax_t
-re_set_syntax (reg_syntax_t syntax)
-{
-  reg_syntax_t ret = re_syntax_options;
-
-  re_syntax_options = syntax;
-# ifdef DEBUG
-  if (syntax & RE_DEBUG)
-    debug = 1;
-  else if (debug) /* was on but now is not */
-    debug = 0;
-# endif /* DEBUG */
-  return ret;
-}
-
-/* This table gives an error message for each of the error codes listed
-   in regex.h.  Obviously the order here has to be same as there.
-   POSIX doesn't require that we do anything for REG_NOERROR,
-   but why not be nice?  */
-
-static const char re_error_msgid[] =
-  {
-# define REG_NOERROR_IDX	0
-    gettext_noop ("Success")	/* REG_NOERROR */
-    "\0"
-# define REG_NOMATCH_IDX (REG_NOERROR_IDX + sizeof "Success")
-    gettext_noop ("No match")	/* REG_NOMATCH */
-    "\0"
-# define REG_BADPAT_IDX	(REG_NOMATCH_IDX + sizeof "No match")
-    gettext_noop ("Invalid regular expression") /* REG_BADPAT */
-    "\0"
-# define REG_ECOLLATE_IDX (REG_BADPAT_IDX + sizeof "Invalid regular expression")
-    gettext_noop ("Invalid collation character") /* REG_ECOLLATE */
-    "\0"
-# define REG_ECTYPE_IDX	(REG_ECOLLATE_IDX + sizeof "Invalid collation character")
-    gettext_noop ("Invalid character class name") /* REG_ECTYPE */
-    "\0"
-# define REG_EESCAPE_IDX	(REG_ECTYPE_IDX + sizeof "Invalid character class name")
-    gettext_noop ("Trailing backslash") /* REG_EESCAPE */
-    "\0"
-# define REG_ESUBREG_IDX	(REG_EESCAPE_IDX + sizeof "Trailing backslash")
-    gettext_noop ("Invalid back reference") /* REG_ESUBREG */
-    "\0"
-# define REG_EBRACK_IDX	(REG_ESUBREG_IDX + sizeof "Invalid back reference")
-    gettext_noop ("Unmatched [ or [^")	/* REG_EBRACK */
-    "\0"
-# define REG_EPAREN_IDX	(REG_EBRACK_IDX + sizeof "Unmatched [ or [^")
-    gettext_noop ("Unmatched ( or \\(") /* REG_EPAREN */
-    "\0"
-# define REG_EBRACE_IDX	(REG_EPAREN_IDX + sizeof "Unmatched ( or \\(")
-    gettext_noop ("Unmatched \\{") /* REG_EBRACE */
-    "\0"
-# define REG_BADBR_IDX	(REG_EBRACE_IDX + sizeof "Unmatched \\{")
-    gettext_noop ("Invalid content of \\{\\}") /* REG_BADBR */
-    "\0"
-# define REG_ERANGE_IDX	(REG_BADBR_IDX + sizeof "Invalid content of \\{\\}")
-    gettext_noop ("Invalid range end")	/* REG_ERANGE */
-    "\0"
-# define REG_ESPACE_IDX	(REG_ERANGE_IDX + sizeof "Invalid range end")
-    gettext_noop ("Memory exhausted") /* REG_ESPACE */
-    "\0"
-# define REG_BADRPT_IDX	(REG_ESPACE_IDX + sizeof "Memory exhausted")
-    gettext_noop ("Invalid preceding regular expression") /* REG_BADRPT */
-    "\0"
-# define REG_EEND_IDX	(REG_BADRPT_IDX + sizeof "Invalid preceding regular expression")
-    gettext_noop ("Premature end of regular expression") /* REG_EEND */
-    "\0"
-# define REG_ESIZE_IDX	(REG_EEND_IDX + sizeof "Premature end of regular expression")
-    gettext_noop ("Regular expression too big") /* REG_ESIZE */
-    "\0"
-# define REG_ERPAREN_IDX	(REG_ESIZE_IDX + sizeof "Regular expression too big")
-    gettext_noop ("Unmatched ) or \\)") /* REG_ERPAREN */
-  };
-
-static const uint16_t re_error_msgid_idx[] =
-  {
-    REG_NOERROR_IDX,
-    REG_NOMATCH_IDX,
-    REG_BADPAT_IDX,
-    REG_ECOLLATE_IDX,
-    REG_ECTYPE_IDX,
-    REG_EESCAPE_IDX,
-    REG_ESUBREG_IDX,
-    REG_EBRACK_IDX,
-    REG_EPAREN_IDX,
-    REG_EBRACE_IDX,
-    REG_BADBR_IDX,
-    REG_ERANGE_IDX,
-    REG_ESPACE_IDX,
-    REG_BADRPT_IDX,
-    REG_EEND_IDX,
-    REG_ESIZE_IDX,
-    REG_ERPAREN_IDX
-  };
-
-#endif /* INSIDE_RECURSION */
-
-#ifndef DEFINED_ONCE
-/* Avoiding alloca during matching, to placate r_alloc.  */
-
-/* Define MATCH_MAY_ALLOCATE unless we need to make sure that the
-   searching and matching functions should not call alloca.  On some
-   systems, alloca is implemented in terms of malloc, and if we're
-   using the relocating allocator routines, then malloc could cause a
-   relocation, which might (if the strings being searched are in the
-   ralloc heap) shift the data out from underneath the regexp
-   routines.
-
-   Here's another reason to avoid allocation: Emacs
-   processes input from X in a signal handler; processing X input may
-   call malloc; if input arrives while a matching routine is calling
-   malloc, then we're scrod.  But Emacs can't just block input while
-   calling matching routines; then we don't notice interrupts when
-   they come in.  So, Emacs blocks input around all regexp calls
-   except the matching calls, which it leaves unprotected, in the
-   faith that they will not malloc.  */
-
-/* Normally, this is fine.  */
-# define MATCH_MAY_ALLOCATE
-
-/* When using GNU C, we are not REALLY using the C alloca, no matter
-   what config.h may say.  So don't take precautions for it.  */
-# ifdef __GNUC__
-#  undef C_ALLOCA
-# endif
-
-/* The match routines may not allocate if (1) they would do it with malloc
-   and (2) it's not safe for them to use malloc.
-   Note that if REL_ALLOC is defined, matching would not use malloc for the
-   failure stack, but we would still use it for the register vectors;
-   so REL_ALLOC should not affect this.  */
-# if (defined C_ALLOCA || defined REGEX_MALLOC) && defined emacs
-#  undef MATCH_MAY_ALLOCATE
-# endif
-#endif /* not DEFINED_ONCE */
-
-#ifdef INSIDE_RECURSION
-/* Failure stack declarations and macros; both re_compile_fastmap and
-   re_match_2 use a failure stack.  These have to be macros because of
-   REGEX_ALLOCATE_STACK.  */
-
-
-/* Number of failure points for which to initially allocate space
-   when matching.  If this number is exceeded, we allocate more
-   space, so it is not a hard limit.  */
-# ifndef INIT_FAILURE_ALLOC
-#  define INIT_FAILURE_ALLOC 5
-# endif
-
-/* Roughly the maximum number of failure points on the stack.  Would be
-   exactly that if always used MAX_FAILURE_ITEMS items each time we failed.
-   This is a variable only so users of regex can assign to it; we never
-   change it ourselves.  */
-
-# ifdef INT_IS_16BIT
-
-#  ifndef DEFINED_ONCE
-#   if defined MATCH_MAY_ALLOCATE
-/* 4400 was enough to cause a crash on Alpha OSF/1,
-   whose default stack limit is 2mb.  */
-long int re_max_failures = 4000;
-#   else
-long int re_max_failures = 2000;
-#   endif
-#  endif
-
-union PREFIX(fail_stack_elt)
-{
-  UCHAR_T *pointer;
-  long int integer;
-};
-
-typedef union PREFIX(fail_stack_elt) PREFIX(fail_stack_elt_t);
-
-typedef struct
-{
-  PREFIX(fail_stack_elt_t) *stack;
-  unsigned long int size;
-  unsigned long int avail;		/* Offset of next open position.  */
-} PREFIX(fail_stack_type);
-
-# else /* not INT_IS_16BIT */
-
-#  ifndef DEFINED_ONCE
-#   if defined MATCH_MAY_ALLOCATE
-/* 4400 was enough to cause a crash on Alpha OSF/1,
-   whose default stack limit is 2mb.  */
-int re_max_failures = 4000;
-#   else
-int re_max_failures = 2000;
-#   endif
-#  endif
-
-union PREFIX(fail_stack_elt)
-{
-  UCHAR_T *pointer;
-  int integer;
-};
-
-typedef union PREFIX(fail_stack_elt) PREFIX(fail_stack_elt_t);
-
-typedef struct
-{
-  PREFIX(fail_stack_elt_t) *stack;
-  unsigned size;
-  unsigned avail;			/* Offset of next open position.  */
-} PREFIX(fail_stack_type);
-
-# endif /* INT_IS_16BIT */
-
-# ifndef DEFINED_ONCE
-#  define FAIL_STACK_EMPTY()     (fail_stack.avail == 0)
-#  define FAIL_STACK_PTR_EMPTY() (fail_stack_ptr->avail == 0)
-#  define FAIL_STACK_FULL()      (fail_stack.avail == fail_stack.size)
-# endif
-
-
-/* Define macros to initialize and free the failure stack.
-   Do `return -2' if the alloc fails.  */
-
-# ifdef MATCH_MAY_ALLOCATE
-#  define INIT_FAIL_STACK()						\
-  do {									\
-    fail_stack.stack = (PREFIX(fail_stack_elt_t) *)		\
-      REGEX_ALLOCATE_STACK (INIT_FAILURE_ALLOC * sizeof (PREFIX(fail_stack_elt_t))); \
-									\
-    if (fail_stack.stack == NULL)				\
-      return -2;							\
-									\
-    fail_stack.size = INIT_FAILURE_ALLOC;			\
-    fail_stack.avail = 0;					\
-  } while (0)
-
-#  define RESET_FAIL_STACK()  REGEX_FREE_STACK (fail_stack.stack)
-# else
-#  define INIT_FAIL_STACK()						\
-  do {									\
-    fail_stack.avail = 0;					\
-  } while (0)
-
-#  define RESET_FAIL_STACK()
-# endif
-
-
-/* Double the size of FAIL_STACK, up to approximately `re_max_failures' items.
-
-   Return 1 if succeeds, and 0 if either ran out of memory
-   allocating space for it or it was already too large.
-
-   REGEX_REALLOCATE_STACK requires `destination' be declared.   */
-
-# define DOUBLE_FAIL_STACK(fail_stack)					\
-  ((fail_stack).size > (unsigned) (re_max_failures * MAX_FAILURE_ITEMS)	\
-   ? 0									\
-   : ((fail_stack).stack = (PREFIX(fail_stack_elt_t) *)			\
-        REGEX_REALLOCATE_STACK ((fail_stack).stack, 			\
-          (fail_stack).size * sizeof (PREFIX(fail_stack_elt_t)),	\
-          ((fail_stack).size << 1) * sizeof (PREFIX(fail_stack_elt_t))),\
-									\
-      (fail_stack).stack == NULL					\
-      ? 0								\
-      : ((fail_stack).size <<= 1, 					\
-         1)))
-
-
-/* Push pointer POINTER on FAIL_STACK.
-   Return 1 if was able to do so and 0 if ran out of memory allocating
-   space to do so.  */
-# define PUSH_PATTERN_OP(POINTER, FAIL_STACK)				\
-  ((FAIL_STACK_FULL ()							\
-    && !DOUBLE_FAIL_STACK (FAIL_STACK))					\
-   ? 0									\
-   : ((FAIL_STACK).stack[(FAIL_STACK).avail++].pointer = POINTER,	\
-      1))
-
-/* Push a pointer value onto the failure stack.
-   Assumes the variable `fail_stack'.  Probably should only
-   be called from within `PUSH_FAILURE_POINT'.  */
-# define PUSH_FAILURE_POINTER(item)					\
-  fail_stack.stack[fail_stack.avail++].pointer = (UCHAR_T *) (item)
-
-/* This pushes an integer-valued item onto the failure stack.
-   Assumes the variable `fail_stack'.  Probably should only
-   be called from within `PUSH_FAILURE_POINT'.  */
-# define PUSH_FAILURE_INT(item)					\
-  fail_stack.stack[fail_stack.avail++].integer = (item)
-
-/* Push a fail_stack_elt_t value onto the failure stack.
-   Assumes the variable `fail_stack'.  Probably should only
-   be called from within `PUSH_FAILURE_POINT'.  */
-# define PUSH_FAILURE_ELT(item)					\
-  fail_stack.stack[fail_stack.avail++] =  (item)
-
-/* These three POP... operations complement the three PUSH... operations.
-   All assume that `fail_stack' is nonempty.  */
-# define POP_FAILURE_POINTER() fail_stack.stack[--fail_stack.avail].pointer
-# define POP_FAILURE_INT() fail_stack.stack[--fail_stack.avail].integer
-# define POP_FAILURE_ELT() fail_stack.stack[--fail_stack.avail]
-
-/* Used to omit pushing failure point id's when we're not debugging.  */
-# ifdef DEBUG
-#  define DEBUG_PUSH PUSH_FAILURE_INT
-#  define DEBUG_POP(item_addr) *(item_addr) = POP_FAILURE_INT ()
-# else
-#  define DEBUG_PUSH(item)
-#  define DEBUG_POP(item_addr)
-# endif
-
-
-/* Push the information about the state we will need
-   if we ever fail back to it.
-
-   Requires variables fail_stack, regstart, regend, reg_info, and
-   num_regs_pushed be declared.  DOUBLE_FAIL_STACK requires `destination'
-   be declared.
-
-   Does `return FAILURE_CODE' if runs out of memory.  */
-
-# define PUSH_FAILURE_POINT(pattern_place, string_place, failure_code)	\
-  do {									\
-    char *destination;							\
-    /* Must be int, so when we don't save any registers, the arithmetic	\
-       of 0 + -1 isn't done as unsigned.  */				\
-    /* Can't be int, since there is not a shred of a guarantee that int	\
-       is wide enough to hold a value of something to which pointer can	\
-       be assigned */							\
-    active_reg_t this_reg;						\
-    									\
-    DEBUG_STATEMENT (failure_id++);					\
-    DEBUG_STATEMENT (nfailure_points_pushed++);				\
-    DEBUG_PRINT2 ("\nPUSH_FAILURE_POINT #%u:\n", failure_id);		\
-    DEBUG_PRINT2 ("  Before push, next avail: %d\n", (fail_stack).avail);\
-    DEBUG_PRINT2 ("                     size: %d\n", (fail_stack).size);\
-									\
-    DEBUG_PRINT2 ("  slots needed: %ld\n", NUM_FAILURE_ITEMS);		\
-    DEBUG_PRINT2 ("     available: %d\n", REMAINING_AVAIL_SLOTS);	\
-									\
-    /* Ensure we have enough space allocated for what we will push.  */	\
-    while (REMAINING_AVAIL_SLOTS < NUM_FAILURE_ITEMS)			\
-      {									\
-        if (!DOUBLE_FAIL_STACK (fail_stack))				\
-          return failure_code;						\
-									\
-        DEBUG_PRINT2 ("\n  Doubled stack; size now: %d\n",		\
-		       (fail_stack).size);				\
-        DEBUG_PRINT2 ("  slots available: %d\n", REMAINING_AVAIL_SLOTS);\
-      }									\
-									\
-    /* Push the info, starting with the registers.  */			\
-    DEBUG_PRINT1 ("\n");						\
-									\
-    if (1)								\
-      for (this_reg = lowest_active_reg; this_reg <= highest_active_reg; \
-	   this_reg++)							\
-	{								\
-	  DEBUG_PRINT2 ("  Pushing reg: %lu\n", this_reg);		\
-	  DEBUG_STATEMENT (num_regs_pushed++);				\
-									\
-	  DEBUG_PRINT2 ("    start: %p\n", regstart[this_reg]);		\
-	  PUSH_FAILURE_POINTER (regstart[this_reg]);			\
-									\
-	  DEBUG_PRINT2 ("    end: %p\n", regend[this_reg]);		\
-	  PUSH_FAILURE_POINTER (regend[this_reg]);			\
-									\
-	  DEBUG_PRINT2 ("    info: %p\n      ",				\
-			reg_info[this_reg].word.pointer);		\
-	  DEBUG_PRINT2 (" match_null=%d",				\
-			REG_MATCH_NULL_STRING_P (reg_info[this_reg]));	\
-	  DEBUG_PRINT2 (" active=%d", IS_ACTIVE (reg_info[this_reg]));	\
-	  DEBUG_PRINT2 (" matched_something=%d",			\
-			MATCHED_SOMETHING (reg_info[this_reg]));	\
-	  DEBUG_PRINT2 (" ever_matched=%d",				\
-			EVER_MATCHED_SOMETHING (reg_info[this_reg]));	\
-	  DEBUG_PRINT1 ("\n");						\
-	  PUSH_FAILURE_ELT (reg_info[this_reg].word);			\
-	}								\
-									\
-    DEBUG_PRINT2 ("  Pushing  low active reg: %ld\n", lowest_active_reg);\
-    PUSH_FAILURE_INT (lowest_active_reg);				\
-									\
-    DEBUG_PRINT2 ("  Pushing high active reg: %ld\n", highest_active_reg);\
-    PUSH_FAILURE_INT (highest_active_reg);				\
-									\
-    DEBUG_PRINT2 ("  Pushing pattern %p:\n", pattern_place);		\
-    DEBUG_PRINT_COMPILED_PATTERN (bufp, pattern_place, pend);		\
-    PUSH_FAILURE_POINTER (pattern_place);				\
-									\
-    DEBUG_PRINT2 ("  Pushing string %p: `", string_place);		\
-    DEBUG_PRINT_DOUBLE_STRING (string_place, string1, size1, string2,   \
-				 size2);				\
-    DEBUG_PRINT1 ("'\n");						\
-    PUSH_FAILURE_POINTER (string_place);				\
-									\
-    DEBUG_PRINT2 ("  Pushing failure id: %u\n", failure_id);		\
-    DEBUG_PUSH (failure_id);						\
-  } while (0)
-
-# ifndef DEFINED_ONCE
-/* This is the number of items that are pushed and popped on the stack
-   for each register.  */
-#  define NUM_REG_ITEMS  3
-
-/* Individual items aside from the registers.  */
-#  ifdef DEBUG
-#   define NUM_NONREG_ITEMS 5 /* Includes failure point id.  */
-#  else
-#   define NUM_NONREG_ITEMS 4
-#  endif
-
-/* We push at most this many items on the stack.  */
-/* We used to use (num_regs - 1), which is the number of registers
-   this regexp will save; but that was changed to 5
-   to avoid stack overflow for a regexp with lots of parens.  */
-#  define MAX_FAILURE_ITEMS (5 * NUM_REG_ITEMS + NUM_NONREG_ITEMS)
-
-/* We actually push this many items.  */
-#  define NUM_FAILURE_ITEMS				\
-  (((0							\
-     ? 0 : highest_active_reg - lowest_active_reg + 1)	\
-    * NUM_REG_ITEMS)					\
-   + NUM_NONREG_ITEMS)
-
-/* How many items can still be added to the stack without overflowing it.  */
-#  define REMAINING_AVAIL_SLOTS ((fail_stack).size - (fail_stack).avail)
-# endif /* not DEFINED_ONCE */
-
-
-/* Pops what PUSH_FAIL_STACK pushes.
-
-   We restore into the parameters, all of which should be lvalues:
-     STR -- the saved data position.
-     PAT -- the saved pattern position.
-     LOW_REG, HIGH_REG -- the highest and lowest active registers.
-     REGSTART, REGEND -- arrays of string positions.
-     REG_INFO -- array of information about each subexpression.
-
-   Also assumes the variables `fail_stack' and (if debugging), `bufp',
-   `pend', `string1', `size1', `string2', and `size2'.  */
-# define POP_FAILURE_POINT(str, pat, low_reg, high_reg, regstart, regend, reg_info)\
-{									\
-  DEBUG_STATEMENT (unsigned failure_id;)				\
-  active_reg_t this_reg;						\
-  const UCHAR_T *string_temp;						\
-									\
-  assert (!FAIL_STACK_EMPTY ());					\
-									\
-  /* Remove failure points and point to how many regs pushed.  */	\
-  DEBUG_PRINT1 ("POP_FAILURE_POINT:\n");				\
-  DEBUG_PRINT2 ("  Before pop, next avail: %d\n", fail_stack.avail);	\
-  DEBUG_PRINT2 ("                    size: %d\n", fail_stack.size);	\
-									\
-  assert (fail_stack.avail >= NUM_NONREG_ITEMS);			\
-									\
-  DEBUG_POP (&failure_id);						\
-  DEBUG_PRINT2 ("  Popping failure id: %u\n", failure_id);		\
-									\
-  /* If the saved string location is NULL, it came from an		\
-     on_failure_keep_string_jump opcode, and we want to throw away the	\
-     saved NULL, thus retaining our current position in the string.  */	\
-  string_temp = POP_FAILURE_POINTER ();					\
-  if (string_temp != NULL)						\
-    str = (const CHAR_T *) string_temp;					\
-									\
-  DEBUG_PRINT2 ("  Popping string %p: `", str);				\
-  DEBUG_PRINT_DOUBLE_STRING (str, string1, size1, string2, size2);	\
-  DEBUG_PRINT1 ("'\n");							\
-									\
-  pat = (UCHAR_T *) POP_FAILURE_POINTER ();				\
-  DEBUG_PRINT2 ("  Popping pattern %p:\n", pat);			\
-  DEBUG_PRINT_COMPILED_PATTERN (bufp, pat, pend);			\
-									\
-  /* Restore register info.  */						\
-  high_reg = (active_reg_t) POP_FAILURE_INT ();				\
-  DEBUG_PRINT2 ("  Popping high active reg: %ld\n", high_reg);		\
-									\
-  low_reg = (active_reg_t) POP_FAILURE_INT ();				\
-  DEBUG_PRINT2 ("  Popping  low active reg: %ld\n", low_reg);		\
-									\
-  if (1)								\
-    for (this_reg = high_reg; this_reg >= low_reg; this_reg--)		\
-      {									\
-	DEBUG_PRINT2 ("    Popping reg: %ld\n", this_reg);		\
-									\
-	reg_info[this_reg].word = POP_FAILURE_ELT ();			\
-	DEBUG_PRINT2 ("      info: %p\n",				\
-		      reg_info[this_reg].word.pointer);			\
-									\
-	regend[this_reg] = (const CHAR_T *) POP_FAILURE_POINTER ();	\
-	DEBUG_PRINT2 ("      end: %p\n", regend[this_reg]);		\
-									\
-	regstart[this_reg] = (const CHAR_T *) POP_FAILURE_POINTER ();	\
-	DEBUG_PRINT2 ("      start: %p\n", regstart[this_reg]);		\
-      }									\
-  else									\
-    {									\
-      for (this_reg = highest_active_reg; this_reg > high_reg; this_reg--) \
-	{								\
-	  reg_info[this_reg].word.integer = 0;				\
-	  regend[this_reg] = 0;						\
-	  regstart[this_reg] = 0;					\
-	}								\
-      highest_active_reg = high_reg;					\
-    }									\
-									\
-  set_regs_matched_done = 0;						\
-  DEBUG_STATEMENT (nfailure_points_popped++);				\
-} /* POP_FAILURE_POINT */
-
-/* Structure for per-register (a.k.a. per-group) information.
-   Other register information, such as the
-   starting and ending positions (which are addresses), and the list of
-   inner groups (which is a bits list) are maintained in separate
-   variables.
-
-   We are making a (strictly speaking) nonportable assumption here: that
-   the compiler will pack our bit fields into something that fits into
-   the type of `word', i.e., is something that fits into one item on the
-   failure stack.  */
-
-
-/* Declarations and macros for re_match_2.  */
-
-typedef union
-{
-  PREFIX(fail_stack_elt_t) word;
-  struct
-  {
-      /* This field is one if this group can match the empty string,
-         zero if not.  If not yet determined,  `MATCH_NULL_UNSET_VALUE'.  */
-# define MATCH_NULL_UNSET_VALUE 3
-    unsigned match_null_string_p : 2;
-    unsigned is_active : 1;
-    unsigned matched_something : 1;
-    unsigned ever_matched_something : 1;
-  } bits;
-} PREFIX(register_info_type);
-
-# ifndef DEFINED_ONCE
-#  define REG_MATCH_NULL_STRING_P(R)  ((R).bits.match_null_string_p)
-#  define IS_ACTIVE(R)  ((R).bits.is_active)
-#  define MATCHED_SOMETHING(R)  ((R).bits.matched_something)
-#  define EVER_MATCHED_SOMETHING(R)  ((R).bits.ever_matched_something)
-
-
-/* Call this when have matched a real character; it sets `matched' flags
-   for the subexpressions which we are currently inside.  Also records
-   that those subexprs have matched.  */
-#  define SET_REGS_MATCHED()						\
-  do									\
-    {									\
-      if (!set_regs_matched_done)					\
-	{								\
-	  active_reg_t r;						\
-	  set_regs_matched_done = 1;					\
-	  for (r = lowest_active_reg; r <= highest_active_reg; r++)	\
-	    {								\
-	      MATCHED_SOMETHING (reg_info[r])				\
-		= EVER_MATCHED_SOMETHING (reg_info[r])			\
-		= 1;							\
-	    }								\
-	}								\
-    }									\
-  while (0)
-# endif /* not DEFINED_ONCE */
-
-/* Registers are set to a sentinel when they haven't yet matched.  */
-static CHAR_T PREFIX(reg_unset_dummy);
-# define REG_UNSET_VALUE (&PREFIX(reg_unset_dummy))
-# define REG_UNSET(e) ((e) == REG_UNSET_VALUE)
-
-/* Subroutine declarations and macros for regex_compile.  */
-static void PREFIX(store_op1) (re_opcode_t op, UCHAR_T *loc, int arg);
-static void PREFIX(store_op2) (re_opcode_t op, UCHAR_T *loc,
-				 int arg1, int arg2);
-static void PREFIX(insert_op1) (re_opcode_t op, UCHAR_T *loc,
-				  int arg, UCHAR_T *end);
-static void PREFIX(insert_op2) (re_opcode_t op, UCHAR_T *loc,
-				  int arg1, int arg2, UCHAR_T *end);
-static boolean PREFIX(at_begline_loc_p) (const CHAR_T *pattern,
-					   const CHAR_T *p,
-					   reg_syntax_t syntax);
-static boolean PREFIX(at_endline_loc_p) (const CHAR_T *p,
-					   const CHAR_T *pend,
-					   reg_syntax_t syntax);
-# ifdef WCHAR
-static reg_errcode_t wcs_compile_range (CHAR_T range_start,
-						  const CHAR_T **p_ptr,
-						  const CHAR_T *pend,
-						  __RE_TRANSLATE_TYPE translate,
-						  reg_syntax_t syntax,
-						  UCHAR_T *b,
-						  CHAR_T *char_set);
-static void insert_space (int num, CHAR_T *loc, CHAR_T *end);
-# else /* BYTE */
-static reg_errcode_t byte_compile_range (unsigned int range_start,
-						   const char **p_ptr,
-						   const char *pend,
-						   __RE_TRANSLATE_TYPE translate,
-						   reg_syntax_t syntax,
-						   unsigned char *b);
-# endif /* WCHAR */
-
-/* Fetch the next character in the uncompiled pattern---translating it
-   if necessary.  Also cast from a signed character in the constant
-   string passed to us by the user to an unsigned char that we can use
-   as an array index (in, e.g., `translate').  */
-/* ifdef MBS_SUPPORT, we translate only if character <= 0xff,
-   because it is impossible to allocate 4GB array for some encodings
-   which have 4 byte character_set like UCS4.  */
-# ifndef PATFETCH
-#  ifdef WCHAR
-#   define PATFETCH(c)							\
-  do {if (p == pend) return REG_EEND;					\
-    c = (UCHAR_T) *p++;							\
-    if (translate && (c <= 0xff)) c = (UCHAR_T) translate[c];		\
-  } while (0)
-#  else /* BYTE */
-#   define PATFETCH(c)							\
-  do {if (p == pend) return REG_EEND;					\
-    c = (unsigned char) *p++;						\
-    if (translate) c = (unsigned char) translate[c];			\
-  } while (0)
-#  endif /* WCHAR */
-# endif
-
-/* Fetch the next character in the uncompiled pattern, with no
-   translation.  */
-# define PATFETCH_RAW(c)						\
-  do {if (p == pend) return REG_EEND;					\
-    c = (UCHAR_T) *p++; 	       					\
-  } while (0)
-
-/* Go backwards one character in the pattern.  */
-# define PATUNFETCH p--
-
-
-/* If `translate' is non-null, return translate[D], else just D.  We
-   cast the subscript to translate because some data is declared as
-   `char *', to avoid warnings when a string constant is passed.  But
-   when we use a character as a subscript we must make it unsigned.  */
-/* ifdef MBS_SUPPORT, we translate only if character <= 0xff,
-   because it is impossible to allocate 4GB array for some encodings
-   which have 4 byte character_set like UCS4.  */
-
-# ifndef TRANSLATE
-#  ifdef WCHAR
-#   define TRANSLATE(d) \
-  ((translate && ((UCHAR_T) (d)) <= 0xff) \
-   ? (char) translate[(unsigned char) (d)] : (d))
-# else /* BYTE */
-#   define TRANSLATE(d) \
-  (translate ? (char) translate[(unsigned char) (d)] : (d))
-#  endif /* WCHAR */
-# endif
-
-
-/* Macros for outputting the compiled pattern into `buffer'.  */
-
-/* If the buffer isn't allocated when it comes in, use this.  */
-# define INIT_BUF_SIZE  (32 * sizeof(UCHAR_T))
-
-/* Make sure we have at least N more bytes of space in buffer.  */
-# ifdef WCHAR
-#  define GET_BUFFER_SPACE(n)						\
-    while (((unsigned long)b - (unsigned long)COMPILED_BUFFER_VAR	\
-            + (n)*sizeof(CHAR_T)) > bufp->allocated)			\
-      EXTEND_BUFFER ()
-# else /* BYTE */
-#  define GET_BUFFER_SPACE(n)						\
-    while ((unsigned long) (b - bufp->buffer + (n)) > bufp->allocated)	\
-      EXTEND_BUFFER ()
-# endif /* WCHAR */
-
-/* Make sure we have one more byte of buffer space and then add C to it.  */
-# define BUF_PUSH(c)							\
-  do {									\
-    GET_BUFFER_SPACE (1);						\
-    *b++ = (UCHAR_T) (c);						\
-  } while (0)
-
-
-/* Ensure we have two more bytes of buffer space and then append C1 and C2.  */
-# define BUF_PUSH_2(c1, c2)						\
-  do {									\
-    GET_BUFFER_SPACE (2);						\
-    *b++ = (UCHAR_T) (c1);						\
-    *b++ = (UCHAR_T) (c2);						\
-  } while (0)
-
-
-/* As with BUF_PUSH_2, except for three bytes.  */
-# define BUF_PUSH_3(c1, c2, c3)						\
-  do {									\
-    GET_BUFFER_SPACE (3);						\
-    *b++ = (UCHAR_T) (c1);						\
-    *b++ = (UCHAR_T) (c2);						\
-    *b++ = (UCHAR_T) (c3);						\
-  } while (0)
-
-/* Store a jump with opcode OP at LOC to location TO.  We store a
-   relative address offset by the three bytes the jump itself occupies.  */
-# define STORE_JUMP(op, loc, to) \
- PREFIX(store_op1) (op, loc, (int) ((to) - (loc) - (1 + OFFSET_ADDRESS_SIZE)))
-
-/* Likewise, for a two-argument jump.  */
-# define STORE_JUMP2(op, loc, to, arg) \
-  PREFIX(store_op2) (op, loc, (int) ((to) - (loc) - (1 + OFFSET_ADDRESS_SIZE)), arg)
-
-/* Like `STORE_JUMP', but for inserting.  Assume `b' is the buffer end.  */
-# define INSERT_JUMP(op, loc, to) \
-  PREFIX(insert_op1) (op, loc, (int) ((to) - (loc) - (1 + OFFSET_ADDRESS_SIZE)), b)
-
-/* Like `STORE_JUMP2', but for inserting.  Assume `b' is the buffer end.  */
-# define INSERT_JUMP2(op, loc, to, arg) \
-  PREFIX(insert_op2) (op, loc, (int) ((to) - (loc) - (1 + OFFSET_ADDRESS_SIZE)),\
-	      arg, b)
-
-/* This is not an arbitrary limit: the arguments which represent offsets
-   into the pattern are two bytes long.  So if 2^16 bytes turns out to
-   be too small, many things would have to change.  */
-/* Any other compiler which, like MSC, has allocation limit below 2^16
-   bytes will have to use approach similar to what was done below for
-   MSC and drop MAX_BUF_SIZE a bit.  Otherwise you may end up
-   reallocating to 0 bytes.  Such thing is not going to work too well.
-   You have been warned!!  */
-# ifndef DEFINED_ONCE
-#  if defined _MSC_VER  && !defined WIN32
-/* Microsoft C 16-bit versions limit malloc to approx 65512 bytes.
-   The REALLOC define eliminates a flurry of conversion warnings,
-   but is not required. */
-#   define MAX_BUF_SIZE  65500L
-#   define REALLOC(p,s) realloc ((p), (size_t) (s))
-#  else
-#   define MAX_BUF_SIZE (1L << 16)
-#   define REALLOC(p,s) realloc ((p), (s))
-#  endif
-# endif /* not DEFINED_ONCE */
-
-/* Extend the buffer by twice its current size via realloc and
-   reset the pointers that pointed into the old block to point to the
-   correct places in the new one.  If extending the buffer results in it
-   being larger than MAX_BUF_SIZE, then flag memory exhausted.  */
-# ifdef WCHAR
-#  define EXTEND_BUFFER()						\
-  do {									\
-    UCHAR_T *old_buffer = COMPILED_BUFFER_VAR;				\
-    int wchar_count;							\
-    if (bufp->allocated + sizeof(UCHAR_T) > MAX_BUF_SIZE)		\
-      return REG_ESIZE;							\
-    bufp->allocated <<= 1;						\
-    if (bufp->allocated > MAX_BUF_SIZE)					\
-      bufp->allocated = MAX_BUF_SIZE;					\
-    /* How many characters the new buffer can have?  */			\
-    wchar_count = bufp->allocated / sizeof(UCHAR_T);			\
-    if (wchar_count == 0) wchar_count = 1;				\
-    /* Truncate the buffer to CHAR_T align.  */			\
-    bufp->allocated = wchar_count * sizeof(UCHAR_T);			\
-    RETALLOC (COMPILED_BUFFER_VAR, wchar_count, UCHAR_T);		\
-    bufp->buffer = (char*)COMPILED_BUFFER_VAR;				\
-    if (COMPILED_BUFFER_VAR == NULL)					\
-      return REG_ESPACE;						\
-    /* If the buffer moved, move all the pointers into it.  */		\
-    if (old_buffer != COMPILED_BUFFER_VAR)				\
-      {									\
-	int incr = COMPILED_BUFFER_VAR - old_buffer;			\
-	b += incr;							\
-	begalt += incr;							\
-	if (fixup_alt_jump)						\
-	  fixup_alt_jump += incr;					\
-	if (laststart)							\
-	  laststart += incr;						\
-	if (pending_exact)						\
-	  pending_exact += incr;					\
-      }									\
-  } while (0)
-# else /* BYTE */
-#  define EXTEND_BUFFER()						\
-  do {									\
-    UCHAR_T *old_buffer = COMPILED_BUFFER_VAR;				\
-    if (bufp->allocated == MAX_BUF_SIZE)				\
-      return REG_ESIZE;							\
-    bufp->allocated <<= 1;						\
-    if (bufp->allocated > MAX_BUF_SIZE)					\
-      bufp->allocated = MAX_BUF_SIZE;					\
-    bufp->buffer = (UCHAR_T *) REALLOC (COMPILED_BUFFER_VAR,		\
-						bufp->allocated);	\
-    if (COMPILED_BUFFER_VAR == NULL)					\
-      return REG_ESPACE;						\
-    /* If the buffer moved, move all the pointers into it.  */		\
-    if (old_buffer != COMPILED_BUFFER_VAR)				\
-      {									\
-	int incr = COMPILED_BUFFER_VAR - old_buffer;			\
-	b += incr;							\
-	begalt += incr;							\
-	if (fixup_alt_jump)						\
-	  fixup_alt_jump += incr;					\
-	if (laststart)							\
-	  laststart += incr;						\
-	if (pending_exact)						\
-	  pending_exact += incr;					\
-      }									\
-  } while (0)
-# endif /* WCHAR */
-
-# ifndef DEFINED_ONCE
-/* Since we have one byte reserved for the register number argument to
-   {start,stop}_memory, the maximum number of groups we can report
-   things about is what fits in that byte.  */
-#  define MAX_REGNUM 255
-
-/* But patterns can have more than `MAX_REGNUM' registers.  We just
-   ignore the excess.  */
-typedef unsigned regnum_t;
-
-
-/* Macros for the compile stack.  */
-
-/* Since offsets can go either forwards or backwards, this type needs to
-   be able to hold values from -(MAX_BUF_SIZE - 1) to MAX_BUF_SIZE - 1.  */
-/* int may be not enough when sizeof(int) == 2.  */
-typedef long pattern_offset_t;
-
-typedef struct
-{
-  pattern_offset_t begalt_offset;
-  pattern_offset_t fixup_alt_jump;
-  pattern_offset_t inner_group_offset;
-  pattern_offset_t laststart_offset;
-  regnum_t regnum;
-} compile_stack_elt_t;
-
-
-typedef struct
-{
-  compile_stack_elt_t *stack;
-  unsigned size;
-  unsigned avail;			/* Offset of next open position.  */
-} compile_stack_type;
-
-
-#  define INIT_COMPILE_STACK_SIZE 32
-
-#  define COMPILE_STACK_EMPTY  (compile_stack.avail == 0)
-#  define COMPILE_STACK_FULL  (compile_stack.avail == compile_stack.size)
-
-/* The next available element.  */
-#  define COMPILE_STACK_TOP (compile_stack.stack[compile_stack.avail])
-
-# endif /* not DEFINED_ONCE */
-
-/* Set the bit for character C in a list.  */
-# ifndef DEFINED_ONCE
-#  define SET_LIST_BIT(c)                               \
-  (b[((unsigned char) (c)) / BYTEWIDTH]               \
-   |= 1 << (((unsigned char) c) % BYTEWIDTH))
-# endif /* DEFINED_ONCE */
-
-/* Get the next unsigned number in the uncompiled pattern.  */
-# define GET_UNSIGNED_NUMBER(num) \
-  {									\
-    while (p != pend)							\
-      {									\
-	PATFETCH (c);							\
-	if (c < '0' || c > '9')						\
-	  break;							\
-	if (num <= RE_DUP_MAX)						\
-	  {								\
-	    if (num < 0)						\
-	      num = 0;							\
-	    num = num * 10 + c - '0';					\
-	  }								\
-      }									\
-  }
-
-# ifndef DEFINED_ONCE
-#  if defined _LIBC || defined WIDE_CHAR_SUPPORT
-/* The GNU C library provides support for user-defined character classes
-   and the functions from ISO C amendement 1.  */
-#   ifdef CHARCLASS_NAME_MAX
-#    define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
-#   else
-/* This shouldn't happen but some implementation might still have this
-   problem.  Use a reasonable default value.  */
-#    define CHAR_CLASS_MAX_LENGTH 256
-#   endif
-
-#   ifdef _LIBC
-#    define IS_CHAR_CLASS(string) __wctype (string)
-#   else
-#    define IS_CHAR_CLASS(string) wctype (string)
-#   endif
-#  else
-#   define CHAR_CLASS_MAX_LENGTH  6 /* Namely, `xdigit'.  */
-
-#   define IS_CHAR_CLASS(string)					\
-   (STREQ (string, "alpha") || STREQ (string, "upper")			\
-    || STREQ (string, "lower") || STREQ (string, "digit")		\
-    || STREQ (string, "alnum") || STREQ (string, "xdigit")		\
-    || STREQ (string, "space") || STREQ (string, "print")		\
-    || STREQ (string, "punct") || STREQ (string, "graph")		\
-    || STREQ (string, "cntrl") || STREQ (string, "blank"))
-#  endif
-# endif /* DEFINED_ONCE */
-
-# ifndef MATCH_MAY_ALLOCATE
-
-/* If we cannot allocate large objects within re_match_2_internal,
-   we make the fail stack and register vectors global.
-   The fail stack, we grow to the maximum size when a regexp
-   is compiled.
-   The register vectors, we adjust in size each time we
-   compile a regexp, according to the number of registers it needs.  */
-
-static PREFIX(fail_stack_type) fail_stack;
-
-/* Size with which the following vectors are currently allocated.
-   That is so we can make them bigger as needed,
-   but never make them smaller.  */
-#  ifdef DEFINED_ONCE
-static int regs_allocated_size;
-
-static const char **     regstart, **     regend;
-static const char ** old_regstart, ** old_regend;
-static const char **best_regstart, **best_regend;
-static const char **reg_dummy;
-#  endif /* DEFINED_ONCE */
-
-static PREFIX(register_info_type) *PREFIX(reg_info);
-static PREFIX(register_info_type) *PREFIX(reg_info_dummy);
-
-/* Make the register vectors big enough for NUM_REGS registers,
-   but don't make them smaller.  */
-
-static void
-PREFIX(regex_grow_registers) (int num_regs)
-{
-  if (num_regs > regs_allocated_size)
-    {
-      RETALLOC_IF (regstart,	 num_regs, const char *);
-      RETALLOC_IF (regend,	 num_regs, const char *);
-      RETALLOC_IF (old_regstart, num_regs, const char *);
-      RETALLOC_IF (old_regend,	 num_regs, const char *);
-      RETALLOC_IF (best_regstart, num_regs, const char *);
-      RETALLOC_IF (best_regend,	 num_regs, const char *);
-      RETALLOC_IF (PREFIX(reg_info), num_regs, PREFIX(register_info_type));
-      RETALLOC_IF (reg_dummy,	 num_regs, const char *);
-      RETALLOC_IF (PREFIX(reg_info_dummy), num_regs, PREFIX(register_info_type));
-
-      regs_allocated_size = num_regs;
-    }
-}
-
-# endif /* not MATCH_MAY_ALLOCATE */
-
-# ifndef DEFINED_ONCE
-static boolean group_in_compile_stack (compile_stack_type
-						 compile_stack,
-						 regnum_t regnum);
-# endif /* not DEFINED_ONCE */
-
-/* `regex_compile' compiles PATTERN (of length SIZE) according to SYNTAX.
-   Returns one of error codes defined in `regex.h', or zero for success.
-
-   Assumes the `allocated' (and perhaps `buffer') and `translate'
-   fields are set in BUFP on entry.
-
-   If it succeeds, results are put in BUFP (if it returns an error, the
-   contents of BUFP are undefined):
-     `buffer' is the compiled pattern;
-     `syntax' is set to SYNTAX;
-     `used' is set to the length of the compiled pattern;
-     `fastmap_accurate' is zero;
-     `re_nsub' is the number of subexpressions in PATTERN;
-     `not_bol' and `not_eol' are zero;
-
-   The `fastmap' and `newline_anchor' fields are neither
-   examined nor set.  */
-
-/* Return, freeing storage we allocated.  */
-# ifdef WCHAR
-#  define FREE_STACK_RETURN(value)		\
-  return (free(pattern), free(mbs_offset), free(is_binary), free (compile_stack.stack), value)
-# else
-#  define FREE_STACK_RETURN(value)		\
-  return (free (compile_stack.stack), value)
-# endif /* WCHAR */
-
-static reg_errcode_t
-PREFIX(regex_compile) (
-     const char *ARG_PREFIX(pattern),
-     size_t ARG_PREFIX(size),
-     reg_syntax_t syntax,
-     struct re_pattern_buffer *bufp)
-{
-  /* We fetch characters from PATTERN here.  Even though PATTERN is
-     `char *' (i.e., signed), we declare these variables as unsigned, so
-     they can be reliably used as array indices.  */
-  register UCHAR_T c, c1;
-
-#ifdef WCHAR
-  /* A temporary space to keep wchar_t pattern and compiled pattern.  */
-  CHAR_T *pattern, *COMPILED_BUFFER_VAR;
-  size_t size;
-  /* offset buffer for optimization. See convert_mbs_to_wc.  */
-  int *mbs_offset = NULL;
-  /* It hold whether each wchar_t is binary data or not.  */
-  char *is_binary = NULL;
-  /* A flag whether exactn is handling binary data or not.  */
-  char is_exactn_bin = FALSE;
-#endif /* WCHAR */
-
-  /* A random temporary spot in PATTERN.  */
-  const CHAR_T *p1;
-
-  /* Points to the end of the buffer, where we should append.  */
-  register UCHAR_T *b;
-
-  /* Keeps track of unclosed groups.  */
-  compile_stack_type compile_stack;
-
-  /* Points to the current (ending) position in the pattern.  */
-#ifdef WCHAR
-  const CHAR_T *p;
-  const CHAR_T *pend;
-#else /* BYTE */
-  const CHAR_T *p = pattern;
-  const CHAR_T *pend = pattern + size;
-#endif /* WCHAR */
-
-  /* How to translate the characters in the pattern.  */
-  __RE_TRANSLATE_TYPE translate = bufp->translate;
-
-  /* Address of the count-byte of the most recently inserted `exactn'
-     command.  This makes it possible to tell if a new exact-match
-     character can be added to that command or if the character requires
-     a new `exactn' command.  */
-  UCHAR_T *pending_exact = 0;
-
-  /* Address of start of the most recently finished expression.
-     This tells, e.g., postfix * where to find the start of its
-     operand.  Reset at the beginning of groups and alternatives.  */
-  UCHAR_T *laststart = 0;
-
-  /* Address of beginning of regexp, or inside of last group.  */
-  UCHAR_T *begalt;
-
-  /* Address of the place where a forward jump should go to the end of
-     the containing expression.  Each alternative of an `or' -- except the
-     last -- ends with a forward jump of this sort.  */
-  UCHAR_T *fixup_alt_jump = 0;
-
-  /* Counts open-groups as they are encountered.  Remembered for the
-     matching close-group on the compile stack, so the same register
-     number is put in the stop_memory as the start_memory.  */
-  regnum_t regnum = 0;
-
-#ifdef WCHAR
-  /* Initialize the wchar_t PATTERN and offset_buffer.  */
-  p = pend = pattern = TALLOC(csize + 1, CHAR_T);
-  mbs_offset = TALLOC(csize + 1, int);
-  is_binary = TALLOC(csize + 1, char);
-  if (pattern == NULL || mbs_offset == NULL || is_binary == NULL)
-    {
-      free(pattern);
-      free(mbs_offset);
-      free(is_binary);
-      return REG_ESPACE;
-    }
-  pattern[csize] = L'\0';	/* sentinel */
-  size = convert_mbs_to_wcs(pattern, cpattern, csize, mbs_offset, is_binary);
-  pend = p + size;
-  if (size < 0)
-    {
-      free(pattern);
-      free(mbs_offset);
-      free(is_binary);
-      return REG_BADPAT;
-    }
-#endif
-
-#ifdef DEBUG
-  DEBUG_PRINT1 ("\nCompiling pattern: ");
-  if (debug)
-    {
-      unsigned debug_count;
-
-      for (debug_count = 0; debug_count < size; debug_count++)
-        PUT_CHAR (pattern[debug_count]);
-      putchar ('\n');
-    }
-#endif /* DEBUG */
-
-  /* Initialize the compile stack.  */
-  compile_stack.stack = TALLOC (INIT_COMPILE_STACK_SIZE, compile_stack_elt_t);
-  if (compile_stack.stack == NULL)
-    {
-#ifdef WCHAR
-      free(pattern);
-      free(mbs_offset);
-      free(is_binary);
-#endif
-      return REG_ESPACE;
-    }
-
-  compile_stack.size = INIT_COMPILE_STACK_SIZE;
-  compile_stack.avail = 0;
-
-  /* Initialize the pattern buffer.  */
-  bufp->syntax = syntax;
-  bufp->fastmap_accurate = 0;
-  bufp->not_bol = bufp->not_eol = 0;
-
-  /* Set `used' to zero, so that if we return an error, the pattern
-     printer (for debugging) will think there's no pattern.  We reset it
-     at the end.  */
-  bufp->used = 0;
-
-  /* Always count groups, whether or not bufp->no_sub is set.  */
-  bufp->re_nsub = 0;
-
-#if !defined emacs && !defined SYNTAX_TABLE
-  /* Initialize the syntax table.  */
-   init_syntax_once ();
-#endif
-
-  if (bufp->allocated == 0)
-    {
-      if (bufp->buffer)
-	{ /* If zero allocated, but buffer is non-null, try to realloc
-             enough space.  This loses if buffer's address is bogus, but
-             that is the user's responsibility.  */
-#ifdef WCHAR
-	  /* Free bufp->buffer and allocate an array for wchar_t pattern
-	     buffer.  */
-          free(bufp->buffer);
-          COMPILED_BUFFER_VAR = TALLOC (INIT_BUF_SIZE/sizeof(UCHAR_T),
-					UCHAR_T);
-#else
-          RETALLOC (COMPILED_BUFFER_VAR, INIT_BUF_SIZE, UCHAR_T);
-#endif /* WCHAR */
-        }
-      else
-        { /* Caller did not allocate a buffer.  Do it for them.  */
-          COMPILED_BUFFER_VAR = TALLOC (INIT_BUF_SIZE / sizeof(UCHAR_T),
-					UCHAR_T);
-        }
-
-      if (!COMPILED_BUFFER_VAR) FREE_STACK_RETURN (REG_ESPACE);
-#ifdef WCHAR
-      bufp->buffer = (char*)COMPILED_BUFFER_VAR;
-#endif /* WCHAR */
-      bufp->allocated = INIT_BUF_SIZE;
-    }
-#ifdef WCHAR
-  else
-    COMPILED_BUFFER_VAR = (UCHAR_T*) bufp->buffer;
-#endif
-
-  begalt = b = COMPILED_BUFFER_VAR;
-
-  /* Loop through the uncompiled pattern until we're at the end.  */
-  while (p != pend)
-    {
-      PATFETCH (c);
-
-      switch (c)
-        {
-        case '^':
-          {
-            if (   /* If at start of pattern, it's an operator.  */
-                   p == pattern + 1
-                   /* If context independent, it's an operator.  */
-                || syntax & RE_CONTEXT_INDEP_ANCHORS
-                   /* Otherwise, depends on what's come before.  */
-                || PREFIX(at_begline_loc_p) (pattern, p, syntax))
-              BUF_PUSH (begline);
-            else
-              goto normal_char;
-          }
-          break;
-
-
-        case '$':
-          {
-            if (   /* If at end of pattern, it's an operator.  */
-                   p == pend
-                   /* If context independent, it's an operator.  */
-                || syntax & RE_CONTEXT_INDEP_ANCHORS
-                   /* Otherwise, depends on what's next.  */
-                || PREFIX(at_endline_loc_p) (p, pend, syntax))
-               BUF_PUSH (endline);
-             else
-               goto normal_char;
-           }
-           break;
-
-
-	case '+':
-        case '?':
-          if ((syntax & RE_BK_PLUS_QM)
-              || (syntax & RE_LIMITED_OPS))
-            goto normal_char;
-        handle_plus:
-        case '*':
-          /* If there is no previous pattern... */
-          if (!laststart)
-            {
-              if (syntax & RE_CONTEXT_INVALID_OPS)
-                FREE_STACK_RETURN (REG_BADRPT);
-              else if (!(syntax & RE_CONTEXT_INDEP_OPS))
-                goto normal_char;
-            }
-
-          {
-            /* Are we optimizing this jump?  */
-            boolean keep_string_p = false;
-
-            /* 1 means zero (many) matches is allowed.  */
-            char zero_times_ok = 0, many_times_ok = 0;
-
-            /* If there is a sequence of repetition chars, collapse it
-               down to just one (the right one).  We can't combine
-               interval operators with these because of, e.g., `a{2}*',
-               which should only match an even number of `a's.  */
-
-            for (;;)
-              {
-                zero_times_ok |= c != '+';
-                many_times_ok |= c != '?';
-
-                if (p == pend)
-                  break;
-
-                PATFETCH (c);
-
-                if (c == '*'
-                    || (!(syntax & RE_BK_PLUS_QM) && (c == '+' || c == '?')))
-                  ;
-
-                else if (syntax & RE_BK_PLUS_QM  &&  c == '\\')
-                  {
-                    if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
-
-                    PATFETCH (c1);
-                    if (!(c1 == '+' || c1 == '?'))
-                      {
-                        PATUNFETCH;
-                        PATUNFETCH;
-                        break;
-                      }
-
-                    c = c1;
-                  }
-                else
-                  {
-                    PATUNFETCH;
-                    break;
-                  }
-
-                /* If we get here, we found another repeat character.  */
-               }
-
-            /* Star, etc. applied to an empty pattern is equivalent
-               to an empty pattern.  */
-            if (!laststart)
-              break;
-
-            /* Now we know whether or not zero matches is allowed
-               and also whether or not two or more matches is allowed.  */
-            if (many_times_ok)
-              { /* More than one repetition is allowed, so put in at the
-                   end a backward relative jump from `b' to before the next
-                   jump we're going to put in below (which jumps from
-                   laststart to after this jump).
-
-                   But if we are at the `*' in the exact sequence `.*\n',
-                   insert an unconditional jump backwards to the .,
-                   instead of the beginning of the loop.  This way we only
-                   push a failure point once, instead of every time
-                   through the loop.  */
-                assert (p - 1 > pattern);
-
-                /* Allocate the space for the jump.  */
-                GET_BUFFER_SPACE (1 + OFFSET_ADDRESS_SIZE);
-
-                /* We know we are not at the first character of the pattern,
-                   because laststart was nonzero.  And we've already
-                   incremented `p', by the way, to be the character after
-                   the `*'.  Do we have to do something analogous here
-                   for null bytes, because of RE_DOT_NOT_NULL?  */
-                if (TRANSLATE (*(p - 2)) == TRANSLATE ('.')
-		    && zero_times_ok
-                    && p < pend && TRANSLATE (*p) == TRANSLATE ('\n')
-                    && !(syntax & RE_DOT_NEWLINE))
-                  { /* We have .*\n.  */
-                    STORE_JUMP (jump, b, laststart);
-                    keep_string_p = true;
-                  }
-                else
-                  /* Anything else.  */
-                  STORE_JUMP (maybe_pop_jump, b, laststart -
-			      (1 + OFFSET_ADDRESS_SIZE));
-
-                /* We've added more stuff to the buffer.  */
-                b += 1 + OFFSET_ADDRESS_SIZE;
-              }
-
-            /* On failure, jump from laststart to b + 3, which will be the
-               end of the buffer after this jump is inserted.  */
-	    /* ifdef WCHAR, 'b + 1 + OFFSET_ADDRESS_SIZE' instead of
-	       'b + 3'.  */
-            GET_BUFFER_SPACE (1 + OFFSET_ADDRESS_SIZE);
-            INSERT_JUMP (keep_string_p ? on_failure_keep_string_jump
-                                       : on_failure_jump,
-                         laststart, b + 1 + OFFSET_ADDRESS_SIZE);
-            pending_exact = 0;
-            b += 1 + OFFSET_ADDRESS_SIZE;
-
-            if (!zero_times_ok)
-              {
-                /* At least one repetition is required, so insert a
-                   `dummy_failure_jump' before the initial
-                   `on_failure_jump' instruction of the loop. This
-                   effects a skip over that instruction the first time
-                   we hit that loop.  */
-                GET_BUFFER_SPACE (1 + OFFSET_ADDRESS_SIZE);
-                INSERT_JUMP (dummy_failure_jump, laststart, laststart +
-			     2 + 2 * OFFSET_ADDRESS_SIZE);
-                b += 1 + OFFSET_ADDRESS_SIZE;
-              }
-            }
-	  break;
-
-
-	case '.':
-          laststart = b;
-          BUF_PUSH (anychar);
-          break;
-
-
-        case '[':
-          {
-            boolean had_char_class = false;
-#ifdef WCHAR
-	    CHAR_T range_start = 0xffffffff;
-#else
-	    unsigned int range_start = 0xffffffff;
-#endif
-            if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-#ifdef WCHAR
-	    /* We assume a charset(_not) structure as a wchar_t array.
-	       charset[0] = (re_opcode_t) charset(_not)
-               charset[1] = l (= length of char_classes)
-               charset[2] = m (= length of collating_symbols)
-               charset[3] = n (= length of equivalence_classes)
-	       charset[4] = o (= length of char_ranges)
-	       charset[5] = p (= length of chars)
-
-               charset[6] = char_class (wctype_t)
-               charset[6+CHAR_CLASS_SIZE] = char_class (wctype_t)
-                         ...
-               charset[l+5]  = char_class (wctype_t)
-
-               charset[l+6]  = collating_symbol (wchar_t)
-                            ...
-               charset[l+m+5]  = collating_symbol (wchar_t)
-					ifdef _LIBC we use the index if
-					_NL_COLLATE_SYMB_EXTRAMB instead of
-					wchar_t string.
-
-               charset[l+m+6]  = equivalence_classes (wchar_t)
-                              ...
-               charset[l+m+n+5]  = equivalence_classes (wchar_t)
-					ifdef _LIBC we use the index in
-					_NL_COLLATE_WEIGHT instead of
-					wchar_t string.
-
-	       charset[l+m+n+6] = range_start
-	       charset[l+m+n+7] = range_end
-	                       ...
-	       charset[l+m+n+2o+4] = range_start
-	       charset[l+m+n+2o+5] = range_end
-					ifdef _LIBC we use the value looked up
-					in _NL_COLLATE_COLLSEQ instead of
-					wchar_t character.
-
-	       charset[l+m+n+2o+6] = char
-	                          ...
-	       charset[l+m+n+2o+p+5] = char
-
-	     */
-
-	    /* We need at least 6 spaces: the opcode, the length of
-               char_classes, the length of collating_symbols, the length of
-               equivalence_classes, the length of char_ranges, the length of
-               chars.  */
-	    GET_BUFFER_SPACE (6);
-
-	    /* Save b as laststart. And We use laststart as the pointer
-	       to the first element of the charset here.
-	       In other words, laststart[i] indicates charset[i].  */
-            laststart = b;
-
-            /* We test `*p == '^' twice, instead of using an if
-               statement, so we only need one BUF_PUSH.  */
-            BUF_PUSH (*p == '^' ? charset_not : charset);
-            if (*p == '^')
-              p++;
-
-            /* Push the length of char_classes, the length of
-               collating_symbols, the length of equivalence_classes, the
-               length of char_ranges and the length of chars.  */
-            BUF_PUSH_3 (0, 0, 0);
-            BUF_PUSH_2 (0, 0);
-
-            /* Remember the first position in the bracket expression.  */
-            p1 = p;
-
-            /* charset_not matches newline according to a syntax bit.  */
-            if ((re_opcode_t) b[-6] == charset_not
-                && (syntax & RE_HAT_LISTS_NOT_NEWLINE))
-	      {
-		BUF_PUSH('\n');
-		laststart[5]++; /* Update the length of characters  */
-	      }
-
-            /* Read in characters and ranges, setting map bits.  */
-            for (;;)
-              {
-                if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-                PATFETCH (c);
-
-                /* \ might escape characters inside [...] and [^...].  */
-                if ((syntax & RE_BACKSLASH_ESCAPE_IN_LISTS) && c == '\\')
-                  {
-                    if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
-
-                    PATFETCH (c1);
-		    BUF_PUSH(c1);
-		    laststart[5]++; /* Update the length of chars  */
-		    range_start = c1;
-                    continue;
-                  }
-
-                /* Could be the end of the bracket expression.  If it's
-                   not (i.e., when the bracket expression is `[]' so
-                   far), the ']' character bit gets set way below.  */
-                if (c == ']' && p != p1 + 1)
-                  break;
-
-                /* Look ahead to see if it's a range when the last thing
-                   was a character class.  */
-                if (had_char_class && c == '-' && *p != ']')
-                  FREE_STACK_RETURN (REG_ERANGE);
-
-                /* Look ahead to see if it's a range when the last thing
-                   was a character: if this is a hyphen not at the
-                   beginning or the end of a list, then it's the range
-                   operator.  */
-                if (c == '-'
-                    && !(p - 2 >= pattern && p[-2] == '[')
-                    && !(p - 3 >= pattern && p[-3] == '[' && p[-2] == '^')
-                    && *p != ']')
-                  {
-                    reg_errcode_t ret;
-		    /* Allocate the space for range_start and range_end.  */
-		    GET_BUFFER_SPACE (2);
-		    /* Update the pointer to indicate end of buffer.  */
-                    b += 2;
-                    ret = wcs_compile_range (range_start, &p, pend, translate,
-                                         syntax, b, laststart);
-                    if (ret != REG_NOERROR) FREE_STACK_RETURN (ret);
-                    range_start = 0xffffffff;
-                  }
-                else if (p[0] == '-' && p[1] != ']')
-                  { /* This handles ranges made up of characters only.  */
-                    reg_errcode_t ret;
-
-		    /* Move past the `-'.  */
-                    PATFETCH (c1);
-		    /* Allocate the space for range_start and range_end.  */
-		    GET_BUFFER_SPACE (2);
-		    /* Update the pointer to indicate end of buffer.  */
-                    b += 2;
-                    ret = wcs_compile_range (c, &p, pend, translate, syntax, b,
-                                         laststart);
-                    if (ret != REG_NOERROR) FREE_STACK_RETURN (ret);
-		    range_start = 0xffffffff;
-                  }
-
-                /* See if we're at the beginning of a possible character
-                   class.  */
-                else if (syntax & RE_CHAR_CLASSES && c == '[' && *p == ':')
-                  { /* Leave room for the null.  */
-                    char str[CHAR_CLASS_MAX_LENGTH + 1];
-
-                    PATFETCH (c);
-                    c1 = 0;
-
-                    /* If pattern is `[[:'.  */
-                    if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-                    for (;;)
-                      {
-                        PATFETCH (c);
-                        if ((c == ':' && *p == ']') || p == pend)
-                          break;
-			if (c1 < CHAR_CLASS_MAX_LENGTH)
-			  str[c1++] = c;
-			else
-			  /* This is in any case an invalid class name.  */
-			  str[0] = '\0';
-                      }
-                    str[c1] = '\0';
-
-                    /* If isn't a word bracketed by `[:' and `:]':
-                       undo the ending character, the letters, and leave
-                       the leading `:' and `[' (but store them as character).  */
-                    if (c == ':' && *p == ']')
-                      {
-			wctype_t wt;
-			uintptr_t alignedp;
-
-			/* Query the character class as wctype_t.  */
-			wt = IS_CHAR_CLASS (str);
-			if (wt == 0)
-			  FREE_STACK_RETURN (REG_ECTYPE);
-
-                        /* Throw away the ] at the end of the character
-                           class.  */
-                        PATFETCH (c);
-
-                        if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-			/* Allocate the space for character class.  */
-                        GET_BUFFER_SPACE(CHAR_CLASS_SIZE);
-			/* Update the pointer to indicate end of buffer.  */
-                        b += CHAR_CLASS_SIZE;
-			/* Move data which follow character classes
-			    not to violate the data.  */
-                        insert_space(CHAR_CLASS_SIZE,
-				     laststart + 6 + laststart[1],
-				     b - 1);
-			alignedp = ((uintptr_t)(laststart + 6 + laststart[1])
-				    + __alignof__(wctype_t) - 1)
-			  	    & ~(uintptr_t)(__alignof__(wctype_t) - 1);
-			/* Store the character class.  */
-                        *((wctype_t*)alignedp) = wt;
-                        /* Update length of char_classes */
-                        laststart[1] += CHAR_CLASS_SIZE;
-
-                        had_char_class = true;
-                      }
-                    else
-                      {
-                        c1++;
-                        while (c1--)
-                          PATUNFETCH;
-                        BUF_PUSH ('[');
-                        BUF_PUSH (':');
-                        laststart[5] += 2; /* Update the length of characters  */
-			range_start = ':';
-                        had_char_class = false;
-                      }
-                  }
-                else if (syntax & RE_CHAR_CLASSES && c == '[' && (*p == '='
-							  || *p == '.'))
-		  {
-		    CHAR_T str[128];	/* Should be large enough.  */
-		    CHAR_T delim = *p; /* '=' or '.'  */
-# ifdef _LIBC
-		    uint32_t nrules =
-		      _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
-# endif
-		    PATFETCH (c);
-		    c1 = 0;
-
-		    /* If pattern is `[[=' or '[[.'.  */
-		    if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-		    for (;;)
-		      {
-			PATFETCH (c);
-			if ((c == delim && *p == ']') || p == pend)
-			  break;
-			if (c1 < sizeof (str) - 1)
-			  str[c1++] = c;
-			else
-			  /* This is in any case an invalid class name.  */
-			  str[0] = '\0';
-                      }
-		    str[c1] = '\0';
-
-		    if (c == delim && *p == ']' && str[0] != '\0')
-		      {
-                        unsigned int i, offset;
-			/* If we have no collation data we use the default
-			   collation in which each character is in a class
-			   by itself.  It also means that ASCII is the
-			   character set and therefore we cannot have character
-			   with more than one byte in the multibyte
-			   representation.  */
-
-                        /* If not defined _LIBC, we push the name and
-			   `\0' for the sake of matching performance.  */
-			int datasize = c1 + 1;
-
-# ifdef _LIBC
-			int32_t idx = 0;
-			if (nrules == 0)
-# endif
-			  {
-			    if (c1 != 1)
-			      FREE_STACK_RETURN (REG_ECOLLATE);
-			  }
-# ifdef _LIBC
-			else
-			  {
-			    const int32_t *table;
-			    const int32_t *weights;
-			    const int32_t *extra;
-			    const int32_t *indirect;
-			    wint_t *cp;
-
-			    /* This #include defines a local function!  */
-#  include <locale/weightwc.h>
-
-			    if(delim == '=')
-			      {
-				/* We push the index for equivalence class.  */
-				cp = (wint_t*)str;
-
-				table = (const int32_t *)
-				  _NL_CURRENT (LC_COLLATE,
-					       _NL_COLLATE_TABLEWC);
-				weights = (const int32_t *)
-				  _NL_CURRENT (LC_COLLATE,
-					       _NL_COLLATE_WEIGHTWC);
-				extra = (const int32_t *)
-				  _NL_CURRENT (LC_COLLATE,
-					       _NL_COLLATE_EXTRAWC);
-				indirect = (const int32_t *)
-				  _NL_CURRENT (LC_COLLATE,
-					       _NL_COLLATE_INDIRECTWC);
-
-				idx = findidx ((const wint_t**)&cp);
-				if (idx == 0 || cp < (wint_t*) str + c1)
-				  /* This is no valid character.  */
-				  FREE_STACK_RETURN (REG_ECOLLATE);
-
-				str[0] = (wchar_t)idx;
-			      }
-			    else /* delim == '.' */
-			      {
-				/* We push collation sequence value
-				   for collating symbol.  */
-				int32_t table_size;
-				const int32_t *symb_table;
-				const unsigned char *extra;
-				int32_t idx;
-				int32_t elem;
-				int32_t second;
-				int32_t hash;
-				char char_str[c1];
-
-				/* We have to convert the name to a single-byte
-				   string.  This is possible since the names
-				   consist of ASCII characters and the internal
-				   representation is UCS4.  */
-				for (i = 0; i < c1; ++i)
-				  char_str[i] = str[i];
-
-				table_size =
-				  _NL_CURRENT_WORD (LC_COLLATE,
-						    _NL_COLLATE_SYMB_HASH_SIZEMB);
-				symb_table = (const int32_t *)
-				  _NL_CURRENT (LC_COLLATE,
-					       _NL_COLLATE_SYMB_TABLEMB);
-				extra = (const unsigned char *)
-				  _NL_CURRENT (LC_COLLATE,
-					       _NL_COLLATE_SYMB_EXTRAMB);
-
-				/* Locate the character in the hashing table.  */
-				hash = elem_hash (char_str, c1);
-
-				idx = 0;
-				elem = hash % table_size;
-				second = hash % (table_size - 2);
-				while (symb_table[2 * elem] != 0)
-				  {
-				    /* First compare the hashing value.  */
-				    if (symb_table[2 * elem] == hash
-					&& c1 == extra[symb_table[2 * elem + 1]]
-					&& memcmp (char_str,
-						   &extra[symb_table[2 * elem + 1]
-							 + 1], c1) == 0)
-				      {
-					/* Yep, this is the entry.  */
-					idx = symb_table[2 * elem + 1];
-					idx += 1 + extra[idx];
-					break;
-				      }
-
-				    /* Next entry.  */
-				    elem += second;
-				  }
-
-				if (symb_table[2 * elem] != 0)
-				  {
-				    /* Compute the index of the byte sequence
-				       in the table.  */
-				    idx += 1 + extra[idx];
-				    /* Adjust for the alignment.  */
-				    idx = (idx + 3) & ~3;
-
-				    str[0] = (wchar_t) idx + 4;
-				  }
-				else if (symb_table[2 * elem] == 0 && c1 == 1)
-				  {
-				    /* No valid character.  Match it as a
-				       single byte character.  */
-				    had_char_class = false;
-				    BUF_PUSH(str[0]);
-				    /* Update the length of characters  */
-				    laststart[5]++;
-				    range_start = str[0];
-
-				    /* Throw away the ] at the end of the
-				       collating symbol.  */
-				    PATFETCH (c);
-				    /* exit from the switch block.  */
-				    continue;
-				  }
-				else
-				  FREE_STACK_RETURN (REG_ECOLLATE);
-			      }
-			    datasize = 1;
-			  }
-# endif
-                        /* Throw away the ] at the end of the equivalence
-                           class (or collating symbol).  */
-                        PATFETCH (c);
-
-			/* Allocate the space for the equivalence class
-			   (or collating symbol) (and '\0' if needed).  */
-                        GET_BUFFER_SPACE(datasize);
-			/* Update the pointer to indicate end of buffer.  */
-                        b += datasize;
-
-			if (delim == '=')
-			  { /* equivalence class  */
-			    /* Calculate the offset of char_ranges,
-			       which is next to equivalence_classes.  */
-			    offset = laststart[1] + laststart[2]
-			      + laststart[3] +6;
-			    /* Insert space.  */
-			    insert_space(datasize, laststart + offset, b - 1);
-
-			    /* Write the equivalence_class and \0.  */
-			    for (i = 0 ; i < datasize ; i++)
-			      laststart[offset + i] = str[i];
-
-			    /* Update the length of equivalence_classes.  */
-			    laststart[3] += datasize;
-			    had_char_class = true;
-			  }
-			else /* delim == '.' */
-			  { /* collating symbol  */
-			    /* Calculate the offset of the equivalence_classes,
-			       which is next to collating_symbols.  */
-			    offset = laststart[1] + laststart[2] + 6;
-			    /* Insert space and write the collationg_symbol
-			       and \0.  */
-			    insert_space(datasize, laststart + offset, b-1);
-			    for (i = 0 ; i < datasize ; i++)
-			      laststart[offset + i] = str[i];
-
-			    /* In re_match_2_internal if range_start < -1, we
-			       assume -range_start is the offset of the
-			       collating symbol which is specified as
-			       the character of the range start.  So we assign
-			       -(laststart[1] + laststart[2] + 6) to
-			       range_start.  */
-			    range_start = -(laststart[1] + laststart[2] + 6);
-			    /* Update the length of collating_symbol.  */
-			    laststart[2] += datasize;
-			    had_char_class = false;
-			  }
-		      }
-                    else
-                      {
-                        c1++;
-                        while (c1--)
-                          PATUNFETCH;
-                        BUF_PUSH ('[');
-                        BUF_PUSH (delim);
-                        laststart[5] += 2; /* Update the length of characters  */
-			range_start = delim;
-                        had_char_class = false;
-                      }
-		  }
-                else
-                  {
-                    had_char_class = false;
-		    BUF_PUSH(c);
-		    laststart[5]++;  /* Update the length of characters  */
-		    range_start = c;
-                  }
-	      }
-
-#else /* BYTE */
-            /* Ensure that we have enough space to push a charset: the
-               opcode, the length count, and the bitset; 34 bytes in all.  */
-	    GET_BUFFER_SPACE (34);
-
-            laststart = b;
-
-            /* We test `*p == '^' twice, instead of using an if
-               statement, so we only need one BUF_PUSH.  */
-            BUF_PUSH (*p == '^' ? charset_not : charset);
-            if (*p == '^')
-              p++;
-
-            /* Remember the first position in the bracket expression.  */
-            p1 = p;
-
-            /* Push the number of bytes in the bitmap.  */
-            BUF_PUSH ((1 << BYTEWIDTH) / BYTEWIDTH);
-
-            /* Clear the whole map.  */
-            bzero (b, (1 << BYTEWIDTH) / BYTEWIDTH);
-
-            /* charset_not matches newline according to a syntax bit.  */
-            if ((re_opcode_t) b[-2] == charset_not
-                && (syntax & RE_HAT_LISTS_NOT_NEWLINE))
-              SET_LIST_BIT ('\n');
-
-            /* Read in characters and ranges, setting map bits.  */
-            for (;;)
-              {
-                if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-                PATFETCH (c);
-
-                /* \ might escape characters inside [...] and [^...].  */
-                if ((syntax & RE_BACKSLASH_ESCAPE_IN_LISTS) && c == '\\')
-                  {
-                    if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
-
-                    PATFETCH (c1);
-                    SET_LIST_BIT (c1);
-		    range_start = c1;
-                    continue;
-                  }
-
-                /* Could be the end of the bracket expression.  If it's
-                   not (i.e., when the bracket expression is `[]' so
-                   far), the ']' character bit gets set way below.  */
-                if (c == ']' && p != p1 + 1)
-                  break;
-
-                /* Look ahead to see if it's a range when the last thing
-                   was a character class.  */
-                if (had_char_class && c == '-' && *p != ']')
-                  FREE_STACK_RETURN (REG_ERANGE);
-
-                /* Look ahead to see if it's a range when the last thing
-                   was a character: if this is a hyphen not at the
-                   beginning or the end of a list, then it's the range
-                   operator.  */
-                if (c == '-'
-                    && !(p - 2 >= pattern && p[-2] == '[')
-                    && !(p - 3 >= pattern && p[-3] == '[' && p[-2] == '^')
-                    && *p != ']')
-                  {
-                    reg_errcode_t ret
-                      = byte_compile_range (range_start, &p, pend, translate,
-					    syntax, b);
-                    if (ret != REG_NOERROR) FREE_STACK_RETURN (ret);
-		    range_start = 0xffffffff;
-                  }
-
-                else if (p[0] == '-' && p[1] != ']')
-                  { /* This handles ranges made up of characters only.  */
-                    reg_errcode_t ret;
-
-		    /* Move past the `-'.  */
-                    PATFETCH (c1);
-
-                    ret = byte_compile_range (c, &p, pend, translate, syntax, b);
-                    if (ret != REG_NOERROR) FREE_STACK_RETURN (ret);
-		    range_start = 0xffffffff;
-                  }
-
-                /* See if we're at the beginning of a possible character
-                   class.  */
-
-                else if (syntax & RE_CHAR_CLASSES && c == '[' && *p == ':')
-                  { /* Leave room for the null.  */
-                    char str[CHAR_CLASS_MAX_LENGTH + 1];
-
-                    PATFETCH (c);
-                    c1 = 0;
-
-                    /* If pattern is `[[:'.  */
-                    if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-                    for (;;)
-                      {
-                        PATFETCH (c);
-                        if ((c == ':' && *p == ']') || p == pend)
-                          break;
-#if CHAR_CLASS_MAX_LENGTH != 256
-			if (c1 < CHAR_CLASS_MAX_LENGTH)
-			  str[c1++] = c;
-			else
-			  /* This is in any case an invalid class name.  */
-			  str[0] = '\0';
-#else
-			  str[c1++] = c;
-#endif
-                      }
-                    str[c1] = '\0';
-
-                    /* If isn't a word bracketed by `[:' and `:]':
-                       undo the ending character, the letters, and leave
-                       the leading `:' and `[' (but set bits for them).  */
-                    if (c == ':' && *p == ']')
-                      {
-# if defined _LIBC || defined WIDE_CHAR_SUPPORT
-                        boolean is_lower = STREQ (str, "lower");
-                        boolean is_upper = STREQ (str, "upper");
-			wctype_t wt;
-                        int ch;
-
-			wt = IS_CHAR_CLASS (str);
-			if (wt == 0)
-			  FREE_STACK_RETURN (REG_ECTYPE);
-
-                        /* Throw away the ] at the end of the character
-                           class.  */
-                        PATFETCH (c);
-
-                        if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-                        for (ch = 0; ch < 1 << BYTEWIDTH; ++ch)
-			  {
-#  ifdef _LIBC
-			    if (__iswctype (__btowc (ch), wt))
-			      SET_LIST_BIT (ch);
-#  else
-			    if (iswctype (btowc (ch), wt))
-			      SET_LIST_BIT (ch);
-#  endif
-
-			    if (translate && (is_upper || is_lower)
-				&& (ISUPPER (ch) || ISLOWER (ch)))
-			      SET_LIST_BIT (ch);
-			  }
-
-                        had_char_class = true;
-# else
-                        int ch;
-                        boolean is_alnum = STREQ (str, "alnum");
-                        boolean is_alpha = STREQ (str, "alpha");
-                        boolean is_blank = STREQ (str, "blank");
-                        boolean is_cntrl = STREQ (str, "cntrl");
-                        boolean is_digit = STREQ (str, "digit");
-                        boolean is_graph = STREQ (str, "graph");
-                        boolean is_lower = STREQ (str, "lower");
-                        boolean is_print = STREQ (str, "print");
-                        boolean is_punct = STREQ (str, "punct");
-                        boolean is_space = STREQ (str, "space");
-                        boolean is_upper = STREQ (str, "upper");
-                        boolean is_xdigit = STREQ (str, "xdigit");
-
-                        if (!IS_CHAR_CLASS (str))
-			  FREE_STACK_RETURN (REG_ECTYPE);
-
-                        /* Throw away the ] at the end of the character
-                           class.  */
-                        PATFETCH (c);
-
-                        if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-                        for (ch = 0; ch < 1 << BYTEWIDTH; ch++)
-                          {
-			    /* This was split into 3 if's to
-			       avoid an arbitrary limit in some compiler.  */
-                            if (   (is_alnum  && ISALNUM (ch))
-                                || (is_alpha  && ISALPHA (ch))
-                                || (is_blank  && ISBLANK (ch))
-                                || (is_cntrl  && ISCNTRL (ch)))
-			      SET_LIST_BIT (ch);
-			    if (   (is_digit  && ISDIGIT (ch))
-                                || (is_graph  && ISGRAPH (ch))
-                                || (is_lower  && ISLOWER (ch))
-                                || (is_print  && ISPRINT (ch)))
-			      SET_LIST_BIT (ch);
-			    if (   (is_punct  && ISPUNCT (ch))
-                                || (is_space  && ISSPACE (ch))
-                                || (is_upper  && ISUPPER (ch))
-                                || (is_xdigit && ISXDIGIT (ch)))
-			      SET_LIST_BIT (ch);
-			    if (   translate && (is_upper || is_lower)
-				&& (ISUPPER (ch) || ISLOWER (ch)))
-			      SET_LIST_BIT (ch);
-                          }
-                        had_char_class = true;
-# endif	/* libc || wctype.h */
-                      }
-                    else
-                      {
-                        c1++;
-                        while (c1--)
-                          PATUNFETCH;
-                        SET_LIST_BIT ('[');
-                        SET_LIST_BIT (':');
-			range_start = ':';
-                        had_char_class = false;
-                      }
-                  }
-                else if (syntax & RE_CHAR_CLASSES && c == '[' && *p == '=')
-		  {
-		    unsigned char str[MB_LEN_MAX + 1];
-# ifdef _LIBC
-		    uint32_t nrules =
-		      _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
-# endif
-
-		    PATFETCH (c);
-		    c1 = 0;
-
-		    /* If pattern is `[[='.  */
-		    if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-		    for (;;)
-		      {
-			PATFETCH (c);
-			if ((c == '=' && *p == ']') || p == pend)
-			  break;
-			if (c1 < MB_LEN_MAX)
-			  str[c1++] = c;
-			else
-			  /* This is in any case an invalid class name.  */
-			  str[0] = '\0';
-                      }
-		    str[c1] = '\0';
-
-		    if (c == '=' && *p == ']' && str[0] != '\0')
-		      {
-			/* If we have no collation data we use the default
-			   collation in which each character is in a class
-			   by itself.  It also means that ASCII is the
-			   character set and therefore we cannot have character
-			   with more than one byte in the multibyte
-			   representation.  */
-# ifdef _LIBC
-			if (nrules == 0)
-# endif
-			  {
-			    if (c1 != 1)
-			      FREE_STACK_RETURN (REG_ECOLLATE);
-
-			    /* Throw away the ] at the end of the equivalence
-			       class.  */
-			    PATFETCH (c);
-
-			    /* Set the bit for the character.  */
-			    SET_LIST_BIT (str[0]);
-			  }
-# ifdef _LIBC
-			else
-			  {
-			    /* Try to match the byte sequence in `str' against
-			       those known to the collate implementation.
-			       First find out whether the bytes in `str' are
-			       actually from exactly one character.  */
-			    const int32_t *table;
-			    const unsigned char *weights;
-			    const unsigned char *extra;
-			    const int32_t *indirect;
-			    int32_t idx;
-			    const unsigned char *cp = str;
-			    int ch;
-
-			    /* This #include defines a local function!  */
-#  include <locale/weight.h>
-
-			    table = (const int32_t *)
-			      _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
-			    weights = (const unsigned char *)
-			      _NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTMB);
-			    extra = (const unsigned char *)
-			      _NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
-			    indirect = (const int32_t *)
-			      _NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTMB);
-
-			    idx = findidx (&cp);
-			    if (idx == 0 || cp < str + c1)
-			      /* This is no valid character.  */
-			      FREE_STACK_RETURN (REG_ECOLLATE);
-
-			    /* Throw away the ] at the end of the equivalence
-			       class.  */
-			    PATFETCH (c);
-
-			    /* Now we have to go throught the whole table
-			       and find all characters which have the same
-			       first level weight.
-
-			       XXX Note that this is not entirely correct.
-			       we would have to match multibyte sequences
-			       but this is not possible with the current
-			       implementation.  */
-			    for (ch = 1; ch < 256; ++ch)
-			      /* XXX This test would have to be changed if we
-				 would allow matching multibyte sequences.  */
-			      if (table[ch] > 0)
-				{
-				  int32_t idx2 = table[ch];
-				  size_t len = weights[idx2];
-
-				  /* Test whether the lenghts match.  */
-				  if (weights[idx] == len)
-				    {
-				      /* They do.  New compare the bytes of
-					 the weight.  */
-				      size_t cnt = 0;
-
-				      while (cnt < len
-					     && (weights[idx + 1 + cnt]
-						 == weights[idx2 + 1 + cnt]))
-					++cnt;
-
-				      if (cnt == len)
-					/* They match.  Mark the character as
-					   acceptable.  */
-					SET_LIST_BIT (ch);
-				    }
-				}
-			  }
-# endif
-			had_char_class = true;
-		      }
-                    else
-                      {
-                        c1++;
-                        while (c1--)
-                          PATUNFETCH;
-                        SET_LIST_BIT ('[');
-                        SET_LIST_BIT ('=');
-			range_start = '=';
-                        had_char_class = false;
-                      }
-		  }
-                else if (syntax & RE_CHAR_CLASSES && c == '[' && *p == '.')
-		  {
-		    unsigned char str[128];	/* Should be large enough.  */
-# ifdef _LIBC
-		    uint32_t nrules =
-		      _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
-# endif
-
-		    PATFETCH (c);
-		    c1 = 0;
-
-		    /* If pattern is `[[.'.  */
-		    if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
-
-		    for (;;)
-		      {
-			PATFETCH (c);
-			if ((c == '.' && *p == ']') || p == pend)
-			  break;
-			if (c1 < sizeof (str))
-			  str[c1++] = c;
-			else
-			  /* This is in any case an invalid class name.  */
-			  str[0] = '\0';
-                      }
-		    str[c1] = '\0';
-
-		    if (c == '.' && *p == ']' && str[0] != '\0')
-		      {
-			/* If we have no collation data we use the default
-			   collation in which each character is the name
-			   for its own class which contains only the one
-			   character.  It also means that ASCII is the
-			   character set and therefore we cannot have character
-			   with more than one byte in the multibyte
-			   representation.  */
-# ifdef _LIBC
-			if (nrules == 0)
-# endif
-			  {
-			    if (c1 != 1)
-			      FREE_STACK_RETURN (REG_ECOLLATE);
-
-			    /* Throw away the ] at the end of the equivalence
-			       class.  */
-			    PATFETCH (c);
-
-			    /* Set the bit for the character.  */
-			    SET_LIST_BIT (str[0]);
-			    range_start = ((const unsigned char *) str)[0];
-			  }
-# ifdef _LIBC
-			else
-			  {
-			    /* Try to match the byte sequence in `str' against
-			       those known to the collate implementation.
-			       First find out whether the bytes in `str' are
-			       actually from exactly one character.  */
-			    int32_t table_size;
-			    const int32_t *symb_table;
-			    const unsigned char *extra;
-			    int32_t idx;
-			    int32_t elem;
-			    int32_t second;
-			    int32_t hash;
-
-			    table_size =
-			      _NL_CURRENT_WORD (LC_COLLATE,
-						_NL_COLLATE_SYMB_HASH_SIZEMB);
-			    symb_table = (const int32_t *)
-			      _NL_CURRENT (LC_COLLATE,
-					   _NL_COLLATE_SYMB_TABLEMB);
-			    extra = (const unsigned char *)
-			      _NL_CURRENT (LC_COLLATE,
-					   _NL_COLLATE_SYMB_EXTRAMB);
-
-			    /* Locate the character in the hashing table.  */
-			    hash = elem_hash (str, c1);
-
-			    idx = 0;
-			    elem = hash % table_size;
-			    second = hash % (table_size - 2);
-			    while (symb_table[2 * elem] != 0)
-			      {
-				/* First compare the hashing value.  */
-				if (symb_table[2 * elem] == hash
-				    && c1 == extra[symb_table[2 * elem + 1]]
-				    && memcmp (str,
-					       &extra[symb_table[2 * elem + 1]
-						     + 1],
-					       c1) == 0)
-				  {
-				    /* Yep, this is the entry.  */
-				    idx = symb_table[2 * elem + 1];
-				    idx += 1 + extra[idx];
-				    break;
-				  }
-
-				/* Next entry.  */
-				elem += second;
-			      }
-
-			    if (symb_table[2 * elem] == 0)
-			      /* This is no valid character.  */
-			      FREE_STACK_RETURN (REG_ECOLLATE);
-
-			    /* Throw away the ] at the end of the equivalence
-			       class.  */
-			    PATFETCH (c);
-
-			    /* Now add the multibyte character(s) we found
-			       to the accept list.
-
-			       XXX Note that this is not entirely correct.
-			       we would have to match multibyte sequences
-			       but this is not possible with the current
-			       implementation.  Also, we have to match
-			       collating symbols, which expand to more than
-			       one file, as a whole and not allow the
-			       individual bytes.  */
-			    c1 = extra[idx++];
-			    if (c1 == 1)
-			      range_start = extra[idx];
-			    while (c1-- > 0)
-			      {
-				SET_LIST_BIT (extra[idx]);
-				++idx;
-			      }
-			  }
-# endif
-			had_char_class = false;
-		      }
-                    else
-                      {
-                        c1++;
-                        while (c1--)
-                          PATUNFETCH;
-                        SET_LIST_BIT ('[');
-                        SET_LIST_BIT ('.');
-			range_start = '.';
-                        had_char_class = false;
-                      }
-		  }
-                else
-                  {
-                    had_char_class = false;
-                    SET_LIST_BIT (c);
-		    range_start = c;
-                  }
-              }
-
-            /* Discard any (non)matching list bytes that are all 0 at the
-               end of the map.  Decrease the map-length byte too.  */
-            while ((int) b[-1] > 0 && b[b[-1] - 1] == 0)
-              b[-1]--;
-            b += b[-1];
-#endif /* WCHAR */
-          }
-          break;
-
-
-	case '(':
-          if (syntax & RE_NO_BK_PARENS)
-            goto handle_open;
-          else
-            goto normal_char;
-
-
-        case ')':
-          if (syntax & RE_NO_BK_PARENS)
-            goto handle_close;
-          else
-            goto normal_char;
-
-
-        case '\n':
-          if (syntax & RE_NEWLINE_ALT)
-            goto handle_alt;
-          else
-            goto normal_char;
-
-
-	case '|':
-          if (syntax & RE_NO_BK_VBAR)
-            goto handle_alt;
-          else
-            goto normal_char;
-
-
-        case '{':
-           if (syntax & RE_INTERVALS && syntax & RE_NO_BK_BRACES)
-             goto handle_interval;
-           else
-             goto normal_char;
-
-
-        case '\\':
-          if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
-
-          /* Do not translate the character after the \, so that we can
-             distinguish, e.g., \B from \b, even if we normally would
-             translate, e.g., B to b.  */
-          PATFETCH_RAW (c);
-
-          switch (c)
-            {
-            case '(':
-              if (syntax & RE_NO_BK_PARENS)
-                goto normal_backslash;
-
-            handle_open:
-              bufp->re_nsub++;
-              regnum++;
-
-              if (COMPILE_STACK_FULL)
-                {
-                  RETALLOC (compile_stack.stack, compile_stack.size << 1,
-                            compile_stack_elt_t);
-                  if (compile_stack.stack == NULL) return REG_ESPACE;
-
-                  compile_stack.size <<= 1;
-                }
-
-              /* These are the values to restore when we hit end of this
-                 group.  They are all relative offsets, so that if the
-                 whole pattern moves because of realloc, they will still
-                 be valid.  */
-              COMPILE_STACK_TOP.begalt_offset = begalt - COMPILED_BUFFER_VAR;
-              COMPILE_STACK_TOP.fixup_alt_jump
-                = fixup_alt_jump ? fixup_alt_jump - COMPILED_BUFFER_VAR + 1 : 0;
-              COMPILE_STACK_TOP.laststart_offset = b - COMPILED_BUFFER_VAR;
-              COMPILE_STACK_TOP.regnum = regnum;
-
-              /* We will eventually replace the 0 with the number of
-                 groups inner to this one.  But do not push a
-                 start_memory for groups beyond the last one we can
-                 represent in the compiled pattern.  */
-              if (regnum <= MAX_REGNUM)
-                {
-                  COMPILE_STACK_TOP.inner_group_offset = b
-		    - COMPILED_BUFFER_VAR + 2;
-                  BUF_PUSH_3 (start_memory, regnum, 0);
-                }
-
-              compile_stack.avail++;
-
-              fixup_alt_jump = 0;
-              laststart = 0;
-              begalt = b;
-	      /* If we've reached MAX_REGNUM groups, then this open
-		 won't actually generate any code, so we'll have to
-		 clear pending_exact explicitly.  */
-	      pending_exact = 0;
-              break;
-
-
-            case ')':
-              if (syntax & RE_NO_BK_PARENS) goto normal_backslash;
-
-              if (COMPILE_STACK_EMPTY)
-		{
-		  if (syntax & RE_UNMATCHED_RIGHT_PAREN_ORD)
-		    goto normal_backslash;
-		  else
-		    FREE_STACK_RETURN (REG_ERPAREN);
-		}
-
-            handle_close:
-              if (fixup_alt_jump)
-                { /* Push a dummy failure point at the end of the
-                     alternative for a possible future
-                     `pop_failure_jump' to pop.  See comments at
-                     `push_dummy_failure' in `re_match_2'.  */
-                  BUF_PUSH (push_dummy_failure);
-
-                  /* We allocated space for this jump when we assigned
-                     to `fixup_alt_jump', in the `handle_alt' case below.  */
-                  STORE_JUMP (jump_past_alt, fixup_alt_jump, b - 1);
-                }
-
-              /* See similar code for backslashed left paren above.  */
-              if (COMPILE_STACK_EMPTY)
-		{
-		  if (syntax & RE_UNMATCHED_RIGHT_PAREN_ORD)
-		    goto normal_char;
-		  else
-		    FREE_STACK_RETURN (REG_ERPAREN);
-		}
-
-              /* Since we just checked for an empty stack above, this
-                 ``can't happen''.  */
-              assert (compile_stack.avail != 0);
-              {
-                /* We don't just want to restore into `regnum', because
-                   later groups should continue to be numbered higher,
-                   as in `(ab)c(de)' -- the second group is #2.  */
-                regnum_t this_group_regnum;
-
-                compile_stack.avail--;
-                begalt = COMPILED_BUFFER_VAR + COMPILE_STACK_TOP.begalt_offset;
-                fixup_alt_jump
-                  = COMPILE_STACK_TOP.fixup_alt_jump
-                    ? COMPILED_BUFFER_VAR + COMPILE_STACK_TOP.fixup_alt_jump - 1
-                    : 0;
-                laststart = COMPILED_BUFFER_VAR + COMPILE_STACK_TOP.laststart_offset;
-                this_group_regnum = COMPILE_STACK_TOP.regnum;
-		/* If we've reached MAX_REGNUM groups, then this open
-		   won't actually generate any code, so we'll have to
-		   clear pending_exact explicitly.  */
-		pending_exact = 0;
-
-                /* We're at the end of the group, so now we know how many
-                   groups were inside this one.  */
-                if (this_group_regnum <= MAX_REGNUM)
-                  {
-		    UCHAR_T *inner_group_loc
-                      = COMPILED_BUFFER_VAR + COMPILE_STACK_TOP.inner_group_offset;
-
-                    *inner_group_loc = regnum - this_group_regnum;
-                    BUF_PUSH_3 (stop_memory, this_group_regnum,
-                                regnum - this_group_regnum);
-                  }
-              }
-              break;
-
-
-            case '|':					/* `\|'.  */
-              if (syntax & RE_LIMITED_OPS || syntax & RE_NO_BK_VBAR)
-                goto normal_backslash;
-            handle_alt:
-              if (syntax & RE_LIMITED_OPS)
-                goto normal_char;
-
-              /* Insert before the previous alternative a jump which
-                 jumps to this alternative if the former fails.  */
-              GET_BUFFER_SPACE (1 + OFFSET_ADDRESS_SIZE);
-              INSERT_JUMP (on_failure_jump, begalt,
-			   b + 2 + 2 * OFFSET_ADDRESS_SIZE);
-              pending_exact = 0;
-              b += 1 + OFFSET_ADDRESS_SIZE;
-
-              /* The alternative before this one has a jump after it
-                 which gets executed if it gets matched.  Adjust that
-                 jump so it will jump to this alternative's analogous
-                 jump (put in below, which in turn will jump to the next
-                 (if any) alternative's such jump, etc.).  The last such
-                 jump jumps to the correct final destination.  A picture:
-                          _____ _____
-                          |   | |   |
-                          |   v |   v
-                         a | b   | c
-
-                 If we are at `b', then fixup_alt_jump right now points to a
-                 three-byte space after `a'.  We'll put in the jump, set
-                 fixup_alt_jump to right after `b', and leave behind three
-                 bytes which we'll fill in when we get to after `c'.  */
-
-              if (fixup_alt_jump)
-                STORE_JUMP (jump_past_alt, fixup_alt_jump, b);
-
-              /* Mark and leave space for a jump after this alternative,
-                 to be filled in later either by next alternative or
-                 when know we're at the end of a series of alternatives.  */
-              fixup_alt_jump = b;
-              GET_BUFFER_SPACE (1 + OFFSET_ADDRESS_SIZE);
-              b += 1 + OFFSET_ADDRESS_SIZE;
-
-              laststart = 0;
-              begalt = b;
-              break;
-
-
-            case '{':
-              /* If \{ is a literal.  */
-              if (!(syntax & RE_INTERVALS)
-                     /* If we're at `\{' and it's not the open-interval
-                        operator.  */
-		  || (syntax & RE_NO_BK_BRACES))
-                goto normal_backslash;
-
-            handle_interval:
-              {
-                /* If got here, then the syntax allows intervals.  */
-
-                /* At least (most) this many matches must be made.  */
-                int lower_bound = -1, upper_bound = -1;
-
-		/* Place in the uncompiled pattern (i.e., just after
-		   the '{') to go back to if the interval is invalid.  */
-		const CHAR_T *beg_interval = p;
-
-                if (p == pend)
-		  goto invalid_interval;
-
-                GET_UNSIGNED_NUMBER (lower_bound);
-
-                if (c == ',')
-                  {
-                    GET_UNSIGNED_NUMBER (upper_bound);
-		    if (upper_bound < 0)
-		      upper_bound = RE_DUP_MAX;
-                  }
-                else
-                  /* Interval such as `{1}' => match exactly once. */
-                  upper_bound = lower_bound;
-
-                if (! (0 <= lower_bound && lower_bound <= upper_bound))
-		  goto invalid_interval;
-
-                if (!(syntax & RE_NO_BK_BRACES))
-                  {
-		    if (c != '\\' || p == pend)
-		      goto invalid_interval;
-                    PATFETCH (c);
-                  }
-
-                if (c != '}')
-		  goto invalid_interval;
-
-                /* If it's invalid to have no preceding re.  */
-                if (!laststart)
-                  {
-		    if (syntax & RE_CONTEXT_INVALID_OPS
-			&& !(syntax & RE_INVALID_INTERVAL_ORD))
-                      FREE_STACK_RETURN (REG_BADRPT);
-                    else if (syntax & RE_CONTEXT_INDEP_OPS)
-                      laststart = b;
-                    else
-                      goto unfetch_interval;
-                  }
-
-                /* We just parsed a valid interval.  */
-
-                if (RE_DUP_MAX < upper_bound)
-		  FREE_STACK_RETURN (REG_BADBR);
-
-                /* If the upper bound is zero, don't want to succeed at
-                   all; jump from `laststart' to `b + 3', which will be
-		   the end of the buffer after we insert the jump.  */
-		/* ifdef WCHAR, 'b + 1 + OFFSET_ADDRESS_SIZE'
-		   instead of 'b + 3'.  */
-                 if (upper_bound == 0)
-                   {
-                     GET_BUFFER_SPACE (1 + OFFSET_ADDRESS_SIZE);
-                     INSERT_JUMP (jump, laststart, b + 1
-				  + OFFSET_ADDRESS_SIZE);
-                     b += 1 + OFFSET_ADDRESS_SIZE;
-                   }
-
-                 /* Otherwise, we have a nontrivial interval.  When
-                    we're all done, the pattern will look like:
-                      set_number_at <jump count> <upper bound>
-                      set_number_at <succeed_n count> <lower bound>
-                      succeed_n <after jump addr> <succeed_n count>
-                      <body of loop>
-                      jump_n <succeed_n addr> <jump count>
-                    (The upper bound and `jump_n' are omitted if
-                    `upper_bound' is 1, though.)  */
-                 else
-                   { /* If the upper bound is > 1, we need to insert
-                        more at the end of the loop.  */
-                     unsigned nbytes = 2 + 4 * OFFSET_ADDRESS_SIZE +
-		       (upper_bound > 1) * (2 + 4 * OFFSET_ADDRESS_SIZE);
-
-                     GET_BUFFER_SPACE (nbytes);
-
-                     /* Initialize lower bound of the `succeed_n', even
-                        though it will be set during matching by its
-                        attendant `set_number_at' (inserted next),
-                        because `re_compile_fastmap' needs to know.
-                        Jump to the `jump_n' we might insert below.  */
-                     INSERT_JUMP2 (succeed_n, laststart,
-                                   b + 1 + 2 * OFFSET_ADDRESS_SIZE
-				   + (upper_bound > 1) * (1 + 2 * OFFSET_ADDRESS_SIZE)
-				   , lower_bound);
-                     b += 1 + 2 * OFFSET_ADDRESS_SIZE;
-
-                     /* Code to initialize the lower bound.  Insert
-                        before the `succeed_n'.  The `5' is the last two
-                        bytes of this `set_number_at', plus 3 bytes of
-                        the following `succeed_n'.  */
-		     /* ifdef WCHAR, The '1+2*OFFSET_ADDRESS_SIZE'
-			is the 'set_number_at', plus '1+OFFSET_ADDRESS_SIZE'
-			of the following `succeed_n'.  */
-                     PREFIX(insert_op2) (set_number_at, laststart, 1
-				 + 2 * OFFSET_ADDRESS_SIZE, lower_bound, b);
-                     b += 1 + 2 * OFFSET_ADDRESS_SIZE;
-
-                     if (upper_bound > 1)
-                       { /* More than one repetition is allowed, so
-                            append a backward jump to the `succeed_n'
-                            that starts this interval.
-
-                            When we've reached this during matching,
-                            we'll have matched the interval once, so
-                            jump back only `upper_bound - 1' times.  */
-                         STORE_JUMP2 (jump_n, b, laststart
-				      + 2 * OFFSET_ADDRESS_SIZE + 1,
-                                      upper_bound - 1);
-                         b += 1 + 2 * OFFSET_ADDRESS_SIZE;
-
-                         /* The location we want to set is the second
-                            parameter of the `jump_n'; that is `b-2' as
-                            an absolute address.  `laststart' will be
-                            the `set_number_at' we're about to insert;
-                            `laststart+3' the number to set, the source
-                            for the relative address.  But we are
-                            inserting into the middle of the pattern --
-                            so everything is getting moved up by 5.
-                            Conclusion: (b - 2) - (laststart + 3) + 5,
-                            i.e., b - laststart.
-
-                            We insert this at the beginning of the loop
-                            so that if we fail during matching, we'll
-                            reinitialize the bounds.  */
-                         PREFIX(insert_op2) (set_number_at, laststart,
-					     b - laststart,
-					     upper_bound - 1, b);
-                         b += 1 + 2 * OFFSET_ADDRESS_SIZE;
-                       }
-                   }
-                pending_exact = 0;
-		break;
-
-	      invalid_interval:
-		if (!(syntax & RE_INVALID_INTERVAL_ORD))
-		  FREE_STACK_RETURN (p == pend ? REG_EBRACE : REG_BADBR);
-	      unfetch_interval:
-		/* Match the characters as literals.  */
-		p = beg_interval;
-		c = '{';
-		if (syntax & RE_NO_BK_BRACES)
-		  goto normal_char;
-		else
-		  goto normal_backslash;
-	      }
-
-#ifdef emacs
-            /* There is no way to specify the before_dot and after_dot
-               operators.  rms says this is ok.  --karl  */
-            case '=':
-              BUF_PUSH (at_dot);
-              break;
-
-            case 's':
-              laststart = b;
-              PATFETCH (c);
-              BUF_PUSH_2 (syntaxspec, syntax_spec_code[c]);
-              break;
-
-            case 'S':
-              laststart = b;
-              PATFETCH (c);
-              BUF_PUSH_2 (notsyntaxspec, syntax_spec_code[c]);
-              break;
-#endif /* emacs */
-
-
-            case 'w':
-	      if (syntax & RE_NO_GNU_OPS)
-		goto normal_char;
-              laststart = b;
-              BUF_PUSH (wordchar);
-              break;
-
-
-            case 'W':
-	      if (syntax & RE_NO_GNU_OPS)
-		goto normal_char;
-              laststart = b;
-              BUF_PUSH (notwordchar);
-              break;
-
-
-            case '<':
-	      if (syntax & RE_NO_GNU_OPS)
-		goto normal_char;
-              BUF_PUSH (wordbeg);
-              break;
-
-            case '>':
-	      if (syntax & RE_NO_GNU_OPS)
-		goto normal_char;
-              BUF_PUSH (wordend);
-              break;
-
-            case 'b':
-	      if (syntax & RE_NO_GNU_OPS)
-		goto normal_char;
-              BUF_PUSH (wordbound);
-              break;
-
-            case 'B':
-	      if (syntax & RE_NO_GNU_OPS)
-		goto normal_char;
-              BUF_PUSH (notwordbound);
-              break;
-
-            case '`':
-	      if (syntax & RE_NO_GNU_OPS)
-		goto normal_char;
-              BUF_PUSH (begbuf);
-              break;
-
-            case '\'':
-	      if (syntax & RE_NO_GNU_OPS)
-		goto normal_char;
-              BUF_PUSH (endbuf);
-              break;
-
-            case '1': case '2': case '3': case '4': case '5':
-            case '6': case '7': case '8': case '9':
-              if (syntax & RE_NO_BK_REFS)
-                goto normal_char;
-
-              c1 = c - '0';
-
-              if (c1 > regnum)
-                FREE_STACK_RETURN (REG_ESUBREG);
-
-              /* Can't back reference to a subexpression if inside of it.  */
-              if (group_in_compile_stack (compile_stack, (regnum_t) c1))
-                goto normal_char;
-
-              laststart = b;
-              BUF_PUSH_2 (duplicate, c1);
-              break;
-
-
-            case '+':
-            case '?':
-              if (syntax & RE_BK_PLUS_QM)
-                goto handle_plus;
-              else
-                goto normal_backslash;
-
-            default:
-            normal_backslash:
-              /* You might think it would be useful for \ to mean
-                 not to translate; but if we don't translate it
-                 it will never match anything.  */
-              c = TRANSLATE (c);
-              goto normal_char;
-            }
-          break;
-
-
-	default:
-        /* Expects the character in `c'.  */
-	normal_char:
-	      /* If no exactn currently being built.  */
-          if (!pending_exact
-#ifdef WCHAR
-	      /* If last exactn handle binary(or character) and
-		 new exactn handle character(or binary).  */
-	      || is_exactn_bin != is_binary[p - 1 - pattern]
-#endif /* WCHAR */
-
-              /* If last exactn not at current position.  */
-              || pending_exact + *pending_exact + 1 != b
-
-              /* We have only one byte following the exactn for the count.  */
-	      || *pending_exact == (1 << BYTEWIDTH) - 1
-
-              /* If followed by a repetition operator.  */
-              || *p == '*' || *p == '^'
-	      || ((syntax & RE_BK_PLUS_QM)
-		  ? *p == '\\' && (p[1] == '+' || p[1] == '?')
-		  : (*p == '+' || *p == '?'))
-	      || ((syntax & RE_INTERVALS)
-                  && ((syntax & RE_NO_BK_BRACES)
-		      ? *p == '{'
-                      : (p[0] == '\\' && p[1] == '{'))))
-	    {
-	      /* Start building a new exactn.  */
-
-              laststart = b;
-
-#ifdef WCHAR
-	      /* Is this exactn binary data or character? */
-	      is_exactn_bin = is_binary[p - 1 - pattern];
-	      if (is_exactn_bin)
-		  BUF_PUSH_2 (exactn_bin, 0);
-	      else
-		  BUF_PUSH_2 (exactn, 0);
-#else
-	      BUF_PUSH_2 (exactn, 0);
-#endif /* WCHAR */
-	      pending_exact = b - 1;
-            }
-
-	  BUF_PUSH (c);
-          (*pending_exact)++;
-	  break;
-        } /* switch (c) */
-    } /* while p != pend */
-
-
-  /* Through the pattern now.  */
-
-  if (fixup_alt_jump)
-    STORE_JUMP (jump_past_alt, fixup_alt_jump, b);
-
-  if (!COMPILE_STACK_EMPTY)
-    FREE_STACK_RETURN (REG_EPAREN);
-
-  /* If we don't want backtracking, force success
-     the first time we reach the end of the compiled pattern.  */
-  if (syntax & RE_NO_POSIX_BACKTRACKING)
-    BUF_PUSH (succeed);
-
-#ifdef WCHAR
-  free (pattern);
-  free (mbs_offset);
-  free (is_binary);
-#endif
-  free (compile_stack.stack);
-
-  /* We have succeeded; set the length of the buffer.  */
-#ifdef WCHAR
-  bufp->used = (uintptr_t) b - (uintptr_t) COMPILED_BUFFER_VAR;
-#else
-  bufp->used = b - bufp->buffer;
-#endif
-
-#ifdef DEBUG
-  if (debug)
-    {
-      DEBUG_PRINT1 ("\nCompiled pattern: \n");
-      PREFIX(print_compiled_pattern) (bufp);
-    }
-#endif /* DEBUG */
-
-#ifndef MATCH_MAY_ALLOCATE
-  /* Initialize the failure stack to the largest possible stack.  This
-     isn't necessary unless we're trying to avoid calling alloca in
-     the search and match routines.  */
-  {
-    int num_regs = bufp->re_nsub + 1;
-
-    /* Since DOUBLE_FAIL_STACK refuses to double only if the current size
-       is strictly greater than re_max_failures, the largest possible stack
-       is 2 * re_max_failures failure points.  */
-    if (fail_stack.size < (2 * re_max_failures * MAX_FAILURE_ITEMS))
-      {
-	fail_stack.size = (2 * re_max_failures * MAX_FAILURE_ITEMS);
-
-# ifdef emacs
-	if (! fail_stack.stack)
-	  fail_stack.stack
-	    = (PREFIX(fail_stack_elt_t) *) xmalloc (fail_stack.size
-				    * sizeof (PREFIX(fail_stack_elt_t)));
-	else
-	  fail_stack.stack
-	    = (PREFIX(fail_stack_elt_t) *) xrealloc (fail_stack.stack,
-				     (fail_stack.size
-				      * sizeof (PREFIX(fail_stack_elt_t))));
-# else /* not emacs */
-	if (! fail_stack.stack)
-	  fail_stack.stack
-	    = (PREFIX(fail_stack_elt_t) *) malloc (fail_stack.size
-				   * sizeof (PREFIX(fail_stack_elt_t)));
-	else
-	  fail_stack.stack
-	    = (PREFIX(fail_stack_elt_t) *) realloc (fail_stack.stack,
-					    (fail_stack.size
-				     * sizeof (PREFIX(fail_stack_elt_t))));
-# endif /* not emacs */
-      }
-
-   PREFIX(regex_grow_registers) (num_regs);
-  }
-#endif /* not MATCH_MAY_ALLOCATE */
-
-  return REG_NOERROR;
-} /* regex_compile */
-
-/* Subroutines for `regex_compile'.  */
-
-/* Store OP at LOC followed by two-byte integer parameter ARG.  */
-/* ifdef WCHAR, integer parameter is 1 wchar_t.  */
-
-static void
-PREFIX(store_op1) (
-    re_opcode_t op,
-    UCHAR_T *loc,
-    int arg)
-{
-  *loc = (UCHAR_T) op;
-  STORE_NUMBER (loc + 1, arg);
-}
-
-
-/* Like `store_op1', but for two two-byte parameters ARG1 and ARG2.  */
-/* ifdef WCHAR, integer parameter is 1 wchar_t.  */
-
-static void
-PREFIX(store_op2) (
-    re_opcode_t op,
-    UCHAR_T *loc,
-    int arg1, int arg2)
-{
-  *loc = (UCHAR_T) op;
-  STORE_NUMBER (loc + 1, arg1);
-  STORE_NUMBER (loc + 1 + OFFSET_ADDRESS_SIZE, arg2);
-}
-
-
-/* Copy the bytes from LOC to END to open up three bytes of space at LOC
-   for OP followed by two-byte integer parameter ARG.  */
-/* ifdef WCHAR, integer parameter is 1 wchar_t.  */
-
-static void
-PREFIX(insert_op1) (
-    re_opcode_t op,
-    UCHAR_T *loc,
-    int arg,
-    UCHAR_T *end)
-{
-  register UCHAR_T *pfrom = end;
-  register UCHAR_T *pto = end + 1 + OFFSET_ADDRESS_SIZE;
-
-  while (pfrom != loc)
-    *--pto = *--pfrom;
-
-  PREFIX(store_op1) (op, loc, arg);
-}
-
-
-/* Like `insert_op1', but for two two-byte parameters ARG1 and ARG2.  */
-/* ifdef WCHAR, integer parameter is 1 wchar_t.  */
-
-static void
-PREFIX(insert_op2) (
-    re_opcode_t op,
-    UCHAR_T *loc,
-    int arg1, int arg2,
-    UCHAR_T *end)
-{
-  register UCHAR_T *pfrom = end;
-  register UCHAR_T *pto = end + 1 + 2 * OFFSET_ADDRESS_SIZE;
-
-  while (pfrom != loc)
-    *--pto = *--pfrom;
-
-  PREFIX(store_op2) (op, loc, arg1, arg2);
-}
-
-
-/* P points to just after a ^ in PATTERN.  Return true if that ^ comes
-   after an alternative or a begin-subexpression.  We assume there is at
-   least one character before the ^.  */
-
-static boolean
-PREFIX(at_begline_loc_p) (
-    const CHAR_T *pattern, const CHAR_T *p,
-    reg_syntax_t syntax)
-{
-  const CHAR_T *prev = p - 2;
-  boolean prev_prev_backslash = prev > pattern && prev[-1] == '\\';
-
-  return
-       /* After a subexpression?  */
-       (*prev == '(' && (syntax & RE_NO_BK_PARENS || prev_prev_backslash))
-       /* After an alternative?  */
-    || (*prev == '|' && (syntax & RE_NO_BK_VBAR || prev_prev_backslash));
-}
-
-
-/* The dual of at_begline_loc_p.  This one is for $.  We assume there is
-   at least one character after the $, i.e., `P < PEND'.  */
-
-static boolean
-PREFIX(at_endline_loc_p) (
-    const CHAR_T *p, const CHAR_T *pend,
-    reg_syntax_t syntax)
-{
-  const CHAR_T *next = p;
-  boolean next_backslash = *next == '\\';
-  const CHAR_T *next_next = p + 1 < pend ? p + 1 : 0;
-
-  return
-       /* Before a subexpression?  */
-       (syntax & RE_NO_BK_PARENS ? *next == ')'
-        : next_backslash && next_next && *next_next == ')')
-       /* Before an alternative?  */
-    || (syntax & RE_NO_BK_VBAR ? *next == '|'
-        : next_backslash && next_next && *next_next == '|');
-}
-
-#else /* not INSIDE_RECURSION */
-
-/* Returns true if REGNUM is in one of COMPILE_STACK's elements and
-   false if it's not.  */
-
-static boolean
-group_in_compile_stack (
-    compile_stack_type compile_stack,
-    regnum_t regnum)
-{
-  int this_element;
-
-  for (this_element = compile_stack.avail - 1;
-       this_element >= 0;
-       this_element--)
-    if (compile_stack.stack[this_element].regnum == regnum)
-      return true;
-
-  return false;
-}
-#endif /* not INSIDE_RECURSION */
-
-#ifdef INSIDE_RECURSION
-
-#ifdef WCHAR
-/* This insert space, which size is "num", into the pattern at "loc".
-   "end" must point the end of the allocated buffer.  */
-static void
-insert_space (
-     int num,
-     CHAR_T *loc,
-     CHAR_T *end)
-{
-  register CHAR_T *pto = end;
-  register CHAR_T *pfrom = end - num;
-
-  while (pfrom >= loc)
-    *pto-- = *pfrom--;
-}
-#endif /* WCHAR */
-
-#ifdef WCHAR
-static reg_errcode_t
-wcs_compile_range (
-     CHAR_T range_start_char,
-     const CHAR_T **p_ptr, const CHAR_T *pend,
-     __RE_TRANSLATE_TYPE translate,
-     reg_syntax_t syntax,
-     CHAR_T *b, CHAR_T *char_set)
-{
-  const CHAR_T *p = *p_ptr;
-  CHAR_T range_start, range_end;
-  reg_errcode_t ret;
-# ifdef _LIBC
-  uint32_t nrules;
-  uint32_t start_val, end_val;
-# endif
-  if (p == pend)
-    return REG_ERANGE;
-
-# ifdef _LIBC
-  nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
-  if (nrules != 0)
-    {
-      const char *collseq = (const char *) _NL_CURRENT(LC_COLLATE,
-						       _NL_COLLATE_COLLSEQWC);
-      const unsigned char *extra = (const unsigned char *)
-	_NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB);
-
-      if (range_start_char < -1)
-	{
-	  /* range_start is a collating symbol.  */
-	  int32_t *wextra;
-	  /* Retreive the index and get collation sequence value.  */
-	  wextra = (int32_t*)(extra + char_set[-range_start_char]);
-	  start_val = wextra[1 + *wextra];
-	}
-      else
-	start_val = collseq_table_lookup(collseq, TRANSLATE(range_start_char));
-
-      end_val = collseq_table_lookup (collseq, TRANSLATE (p[0]));
-
-      /* Report an error if the range is empty and the syntax prohibits
-	 this.  */
-      ret = ((syntax & RE_NO_EMPTY_RANGES)
-	     && (start_val > end_val))? REG_ERANGE : REG_NOERROR;
-
-      /* Insert space to the end of the char_ranges.  */
-      insert_space(2, b - char_set[5] - 2, b - 1);
-      *(b - char_set[5] - 2) = (wchar_t)start_val;
-      *(b - char_set[5] - 1) = (wchar_t)end_val;
-      char_set[4]++; /* ranges_index */
-    }
-  else
-# endif
-    {
-      range_start = (range_start_char >= 0)? TRANSLATE (range_start_char):
-	range_start_char;
-      range_end = TRANSLATE (p[0]);
-      /* Report an error if the range is empty and the syntax prohibits
-	 this.  */
-      ret = ((syntax & RE_NO_EMPTY_RANGES)
-	     && (range_start > range_end))? REG_ERANGE : REG_NOERROR;
-
-      /* Insert space to the end of the char_ranges.  */
-      insert_space(2, b - char_set[5] - 2, b - 1);
-      *(b - char_set[5] - 2) = range_start;
-      *(b - char_set[5] - 1) = range_end;
-      char_set[4]++; /* ranges_index */
-    }
-  /* Have to increment the pointer into the pattern string, so the
-     caller isn't still at the ending character.  */
-  (*p_ptr)++;
-
-  return ret;
-}
-#else /* BYTE */
-/* Read the ending character of a range (in a bracket expression) from the
-   uncompiled pattern *P_PTR (which ends at PEND).  We assume the
-   starting character is in `P[-2]'.  (`P[-1]' is the character `-'.)
-   Then we set the translation of all bits between the starting and
-   ending characters (inclusive) in the compiled pattern B.
-
-   Return an error code.
-
-   We use these short variable names so we can use the same macros as
-   `regex_compile' itself.  */
-
-static reg_errcode_t
-byte_compile_range (
-     unsigned int range_start_char,
-     const char **p_ptr, const char *pend,
-     __RE_TRANSLATE_TYPE translate,
-     reg_syntax_t syntax,
-     unsigned char *b)
-{
-  unsigned this_char;
-  const char *p = *p_ptr;
-  reg_errcode_t ret;
-# ifdef _LIBC
-  const unsigned char *collseq;
-  unsigned int start_colseq;
-  unsigned int end_colseq;
-# else
-  unsigned end_char;
-# endif
-
-  if (p == pend)
-    return REG_ERANGE;
-
-  /* Have to increment the pointer into the pattern string, so the
-     caller isn't still at the ending character.  */
-  (*p_ptr)++;
-
-  /* Report an error if the range is empty and the syntax prohibits this.  */
-  ret = syntax & RE_NO_EMPTY_RANGES ? REG_ERANGE : REG_NOERROR;
-
-# ifdef _LIBC
-  collseq = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
-						 _NL_COLLATE_COLLSEQMB);
-
-  start_colseq = collseq[(unsigned char) TRANSLATE (range_start_char)];
-  end_colseq = collseq[(unsigned char) TRANSLATE (p[0])];
-  for (this_char = 0; this_char <= (unsigned char) -1; ++this_char)
-    {
-      unsigned int this_colseq = collseq[(unsigned char) TRANSLATE (this_char)];
-
-      if (start_colseq <= this_colseq && this_colseq <= end_colseq)
-	{
-	  SET_LIST_BIT (TRANSLATE (this_char));
-	  ret = REG_NOERROR;
-	}
-    }
-# else
-  /* Here we see why `this_char' has to be larger than an `unsigned
-     char' -- we would otherwise go into an infinite loop, since all
-     characters <= 0xff.  */
-  range_start_char = TRANSLATE (range_start_char);
-  /* TRANSLATE(p[0]) is casted to char (not unsigned char) in TRANSLATE,
-     and some compilers cast it to int implicitly, so following for_loop
-     may fall to (almost) infinite loop.
-     e.g. If translate[p[0]] = 0xff, end_char may equals to 0xffffffff.
-     To avoid this, we cast p[0] to unsigned int and truncate it.  */
-  end_char = ((unsigned)TRANSLATE(p[0]) & ((1 << BYTEWIDTH) - 1));
-
-  for (this_char = range_start_char; this_char <= end_char; ++this_char)
-    {
-      SET_LIST_BIT (TRANSLATE (this_char));
-      ret = REG_NOERROR;
-    }
-# endif
-
-  return ret;
-}
-#endif /* WCHAR */
-
-/* re_compile_fastmap computes a ``fastmap'' for the compiled pattern in
-   BUFP.  A fastmap records which of the (1 << BYTEWIDTH) possible
-   characters can start a string that matches the pattern.  This fastmap
-   is used by re_search to skip quickly over impossible starting points.
-
-   The caller must supply the address of a (1 << BYTEWIDTH)-byte data
-   area as BUFP->fastmap.
-
-   We set the `fastmap', `fastmap_accurate', and `can_be_null' fields in
-   the pattern buffer.
-
-   Returns 0 if we succeed, -2 if an internal error.   */
-
-#ifdef WCHAR
-/* local function for re_compile_fastmap.
-   truncate wchar_t character to char.  */
-static unsigned char truncate_wchar (CHAR_T c)
-{
-  unsigned char buf[MB_CUR_MAX];
-  mbstate_t state;
-  int retval;
-  memset (&state, '\0', sizeof (state));
-# ifdef _LIBC
-  retval = __wcrtomb (buf, c, &state);
-# else
-  retval = wcrtomb (buf, c, &state);
-# endif
-  return retval > 0 ? buf[0] : (unsigned char) c;
-}
-#endif /* WCHAR */
-
-static int
-PREFIX(re_compile_fastmap) (struct re_pattern_buffer *bufp)
-{
-  int j, k;
-#ifdef MATCH_MAY_ALLOCATE
-  PREFIX(fail_stack_type) fail_stack;
-#endif
-#ifndef REGEX_MALLOC
-  char *destination;
-#endif
-
-  register char *fastmap = bufp->fastmap;
-
-#ifdef WCHAR
-  /* We need to cast pattern to (wchar_t*), because we casted this compiled
-     pattern to (char*) in regex_compile.  */
-  UCHAR_T *pattern = (UCHAR_T*)bufp->buffer;
-  register UCHAR_T *pend = (UCHAR_T*) (bufp->buffer + bufp->used);
-#else /* BYTE */
-  UCHAR_T *pattern = bufp->buffer;
-  register UCHAR_T *pend = pattern + bufp->used;
-#endif /* WCHAR */
-  UCHAR_T *p = pattern;
-
-#ifdef REL_ALLOC
-  /* This holds the pointer to the failure stack, when
-     it is allocated relocatably.  */
-  fail_stack_elt_t *failure_stack_ptr;
-#endif
-
-  /* Assume that each path through the pattern can be null until
-     proven otherwise.  We set this false at the bottom of switch
-     statement, to which we get only if a particular path doesn't
-     match the empty string.  */
-  boolean path_can_be_null = true;
-
-  /* We aren't doing a `succeed_n' to begin with.  */
-  boolean succeed_n_p = false;
-
-  assert (fastmap != NULL && p != NULL);
-
-  INIT_FAIL_STACK ();
-  bzero (fastmap, 1 << BYTEWIDTH);  /* Assume nothing's valid.  */
-  bufp->fastmap_accurate = 1;	    /* It will be when we're done.  */
-  bufp->can_be_null = 0;
-
-  while (1)
-    {
-      if (p == pend || *p == succeed)
-	{
-	  /* We have reached the (effective) end of pattern.  */
-	  if (!FAIL_STACK_EMPTY ())
-	    {
-	      bufp->can_be_null |= path_can_be_null;
-
-	      /* Reset for next path.  */
-	      path_can_be_null = true;
-
-	      p = fail_stack.stack[--fail_stack.avail].pointer;
-
-	      continue;
-	    }
-	  else
-	    break;
-	}
-
-      /* We should never be about to go beyond the end of the pattern.  */
-      assert (p < pend);
-
-      switch (SWITCH_ENUM_CAST ((re_opcode_t) *p++))
-	{
-
-        /* I guess the idea here is to simply not bother with a fastmap
-           if a backreference is used, since it's too hard to figure out
-           the fastmap for the corresponding group.  Setting
-           `can_be_null' stops `re_search_2' from using the fastmap, so
-           that is all we do.  */
-	case duplicate:
-	  bufp->can_be_null = 1;
-          goto done;
-
-
-      /* Following are the cases which match a character.  These end
-         with `break'.  */
-
-#ifdef WCHAR
-	case exactn:
-          fastmap[truncate_wchar(p[1])] = 1;
-	  break;
-#else /* BYTE */
-	case exactn:
-          fastmap[p[1]] = 1;
-	  break;
-#endif /* WCHAR */
-#ifdef MBS_SUPPORT
-	case exactn_bin:
-	  fastmap[p[1]] = 1;
-	  break;
-#endif
-
-#ifdef WCHAR
-        /* It is hard to distinguish fastmap from (multi byte) characters
-           which depends on current locale.  */
-        case charset:
-	case charset_not:
-	case wordchar:
-	case notwordchar:
-          bufp->can_be_null = 1;
-          goto done;
-#else /* BYTE */
-        case charset:
-          for (j = *p++ * BYTEWIDTH - 1; j >= 0; j--)
-	    if (p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH)))
-              fastmap[j] = 1;
-	  break;
-
-
-	case charset_not:
-	  /* Chars beyond end of map must be allowed.  */
-	  for (j = *p * BYTEWIDTH; j < (1 << BYTEWIDTH); j++)
-            fastmap[j] = 1;
-
-	  for (j = *p++ * BYTEWIDTH - 1; j >= 0; j--)
-	    if (!(p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH))))
-              fastmap[j] = 1;
-          break;
-
-
-	case wordchar:
-	  for (j = 0; j < (1 << BYTEWIDTH); j++)
-	    if (SYNTAX (j) == Sword)
-	      fastmap[j] = 1;
-	  break;
-
-
-	case notwordchar:
-	  for (j = 0; j < (1 << BYTEWIDTH); j++)
-	    if (SYNTAX (j) != Sword)
-	      fastmap[j] = 1;
-	  break;
-#endif /* WCHAR */
-
-        case anychar:
-	  {
-	    int fastmap_newline = fastmap['\n'];
-
-	    /* `.' matches anything ...  */
-	    for (j = 0; j < (1 << BYTEWIDTH); j++)
-	      fastmap[j] = 1;
-
-	    /* ... except perhaps newline.  */
-	    if (!(bufp->syntax & RE_DOT_NEWLINE))
-	      fastmap['\n'] = fastmap_newline;
-
-	    /* Return if we have already set `can_be_null'; if we have,
-	       then the fastmap is irrelevant.  Something's wrong here.  */
-	    else if (bufp->can_be_null)
-	      goto done;
-
-	    /* Otherwise, have to check alternative paths.  */
-	    break;
-	  }
-
-#ifdef emacs
-        case syntaxspec:
-	  k = *p++;
-	  for (j = 0; j < (1 << BYTEWIDTH); j++)
-	    if (SYNTAX (j) == (enum syntaxcode) k)
-	      fastmap[j] = 1;
-	  break;
-
-
-	case notsyntaxspec:
-	  k = *p++;
-	  for (j = 0; j < (1 << BYTEWIDTH); j++)
-	    if (SYNTAX (j) != (enum syntaxcode) k)
-	      fastmap[j] = 1;
-	  break;
-
-
-      /* All cases after this match the empty string.  These end with
-         `continue'.  */
-
-
-	case before_dot:
-	case at_dot:
-	case after_dot:
-          continue;
-#endif /* emacs */
-
-
-        case no_op:
-        case begline:
-        case endline:
-	case begbuf:
-	case endbuf:
-	case wordbound:
-	case notwordbound:
-	case wordbeg:
-	case wordend:
-        case push_dummy_failure:
-          continue;
-
-
-	case jump_n:
-        case pop_failure_jump:
-	case maybe_pop_jump:
-	case jump:
-        case jump_past_alt:
-	case dummy_failure_jump:
-          EXTRACT_NUMBER_AND_INCR (j, p);
-	  p += j;
-	  if (j > 0)
-	    continue;
-
-          /* Jump backward implies we just went through the body of a
-             loop and matched nothing.  Opcode jumped to should be
-             `on_failure_jump' or `succeed_n'.  Just treat it like an
-             ordinary jump.  For a * loop, it has pushed its failure
-             point already; if so, discard that as redundant.  */
-          if ((re_opcode_t) *p != on_failure_jump
-	      && (re_opcode_t) *p != succeed_n)
-	    continue;
-
-          p++;
-          EXTRACT_NUMBER_AND_INCR (j, p);
-          p += j;
-
-          /* If what's on the stack is where we are now, pop it.  */
-          if (!FAIL_STACK_EMPTY ()
-	      && fail_stack.stack[fail_stack.avail - 1].pointer == p)
-            fail_stack.avail--;
-
-          continue;
-
-
-        case on_failure_jump:
-        case on_failure_keep_string_jump:
-	handle_on_failure_jump:
-          EXTRACT_NUMBER_AND_INCR (j, p);
-
-          /* For some patterns, e.g., `(a?)?', `p+j' here points to the
-             end of the pattern.  We don't want to push such a point,
-             since when we restore it above, entering the switch will
-             increment `p' past the end of the pattern.  We don't need
-             to push such a point since we obviously won't find any more
-             fastmap entries beyond `pend'.  Such a pattern can match
-             the null string, though.  */
-          if (p + j < pend)
-            {
-              if (!PUSH_PATTERN_OP (p + j, fail_stack))
-		{
-		  RESET_FAIL_STACK ();
-		  return -2;
-		}
-            }
-          else
-            bufp->can_be_null = 1;
-
-          if (succeed_n_p)
-            {
-              EXTRACT_NUMBER_AND_INCR (k, p);	/* Skip the n.  */
-              succeed_n_p = false;
-	    }
-
-          continue;
-
-
-	case succeed_n:
-          /* Get to the number of times to succeed.  */
-          p += OFFSET_ADDRESS_SIZE;
-
-          /* Increment p past the n for when k != 0.  */
-          EXTRACT_NUMBER_AND_INCR (k, p);
-          if (k == 0)
-	    {
-              p -= 2 * OFFSET_ADDRESS_SIZE;
-  	      succeed_n_p = true;  /* Spaghetti code alert.  */
-              goto handle_on_failure_jump;
-            }
-          continue;
-
-
-	case set_number_at:
-          p += 2 * OFFSET_ADDRESS_SIZE;
-          continue;
-
-
-	case start_memory:
-        case stop_memory:
-	  p += 2;
-	  continue;
-
-
-	default:
-          abort (); /* We have listed all the cases.  */
-        } /* switch *p++ */
-
-      /* Getting here means we have found the possible starting
-         characters for one path of the pattern -- and that the empty
-         string does not match.  We need not follow this path further.
-         Instead, look at the next alternative (remembered on the
-         stack), or quit if no more.  The test at the top of the loop
-         does these things.  */
-      path_can_be_null = false;
-      p = pend;
-    } /* while p */
-
-  /* Set `can_be_null' for the last path (also the first path, if the
-     pattern is empty).  */
-  bufp->can_be_null |= path_can_be_null;
-
- done:
-  RESET_FAIL_STACK ();
-  return 0;
-}
-
-#else /* not INSIDE_RECURSION */
-
-int
-re_compile_fastmap (struct re_pattern_buffer *bufp)
-{
-# ifdef MBS_SUPPORT
-  if (MB_CUR_MAX != 1)
-    return wcs_re_compile_fastmap(bufp);
-# endif
-  return byte_re_compile_fastmap(bufp);
-}
-libc_hidden_def(re_compile_fastmap)
-
-
-/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
-   ENDS.  Subsequent matches using PATTERN_BUFFER and REGS will use
-   this memory for recording register information.  STARTS and ENDS
-   must be allocated using the malloc library routine, and must each
-   be at least NUM_REGS * sizeof (regoff_t) bytes long.
-
-   If NUM_REGS == 0, then subsequent matches should allocate their own
-   register data.
-
-   Unless this function is called, the first search or match using
-   PATTERN_BUFFER will allocate its own register data, without
-   freeing the old data.  */
-
-void
-re_set_registers (
-    struct re_pattern_buffer *bufp,
-    struct re_registers *regs,
-    unsigned num_regs,
-    regoff_t *starts, regoff_t *ends)
-{
-  if (num_regs)
-    {
-      bufp->regs_allocated = REGS_REALLOCATE;
-      regs->num_regs = num_regs;
-      regs->start = starts;
-      regs->end = ends;
-    }
-  else
-    {
-      bufp->regs_allocated = REGS_UNALLOCATED;
-      regs->num_regs = 0;
-      regs->start = regs->end = (regoff_t *) 0;
-    }
-}
-
-/* Searching routines.  */
-
-/* Like re_search_2, below, but only one string is specified, and
-   doesn't let you say where to stop matching.  */
-
-int
-re_search (
-     struct re_pattern_buffer *bufp,
-     const char *string,
-     int size, int startpos, int range,
-     struct re_registers *regs)
-{
-  return re_search_2 (bufp, NULL, 0, string, size, startpos, range,
-		      regs, size);
-}
-libc_hidden_def(re_search)
-
-
-/* Using the compiled pattern in BUFP->buffer, first tries to match the
-   virtual concatenation of STRING1 and STRING2, starting first at index
-   STARTPOS, then at STARTPOS + 1, and so on.
-
-   STRING1 and STRING2 have length SIZE1 and SIZE2, respectively.
-
-   RANGE is how far to scan while trying to match.  RANGE = 0 means try
-   only at STARTPOS; in general, the last start tried is STARTPOS +
-   RANGE.
-
-   In REGS, return the indices of the virtual concatenation of STRING1
-   and STRING2 that matched the entire BUFP->buffer and its contained
-   subexpressions.
-
-   Do not consider matching one past the index STOP in the virtual
-   concatenation of STRING1 and STRING2.
-
-   We return either the position in the strings at which the match was
-   found, -1 if no match, or -2 if error (such as failure
-   stack overflow).  */
-
-int
-re_search_2 (
-     struct re_pattern_buffer *bufp,
-     const char *string1, int size1,
-     const char *string2, int size2,
-     int startpos,
-     int range,
-     struct re_registers *regs,
-     int stop)
-{
-# ifdef MBS_SUPPORT
-  if (MB_CUR_MAX != 1)
-    return wcs_re_search_2 (bufp, string1, size1, string2, size2, startpos,
-			    range, regs, stop);
-# endif
-  return byte_re_search_2 (bufp, string1, size1, string2, size2, startpos,
-			   range, regs, stop);
-}
-libc_hidden_def(re_search_2)
-
-#endif /* not INSIDE_RECURSION */
-
-#ifdef INSIDE_RECURSION
-
-#ifdef MATCH_MAY_ALLOCATE
-# define FREE_VAR(var) if (var) REGEX_FREE (var); var = NULL
-#else
-# define FREE_VAR(var) free (var); var = NULL
-#endif
-
-#ifdef WCHAR
-# define MAX_ALLOCA_SIZE	2000
-
-# define FREE_WCS_BUFFERS() \
-  do {									      \
-    if (size1 > MAX_ALLOCA_SIZE)					      \
-      {									      \
-	free (wcs_string1);						      \
-	free (mbs_offset1);						      \
-      }									      \
-    else								      \
-      {									      \
-	FREE_VAR (wcs_string1);						      \
-	FREE_VAR (mbs_offset1);						      \
-      }									      \
-    if (size2 > MAX_ALLOCA_SIZE) 					      \
-      {									      \
-	free (wcs_string2);						      \
-	free (mbs_offset2);						      \
-      }									      \
-    else								      \
-      {									      \
-	FREE_VAR (wcs_string2);						      \
-	FREE_VAR (mbs_offset2);						      \
-      }									      \
-  } while (0)
-
-#endif
-
-
-static int
-PREFIX(re_search_2) (
-     struct re_pattern_buffer *bufp,
-     const char *string1, int size1,
-     const char *string2, int size2,
-     int startpos,
-     int range,
-     struct re_registers *regs,
-     int stop)
-{
-  int val;
-  register char *fastmap = bufp->fastmap;
-  register __RE_TRANSLATE_TYPE translate = bufp->translate;
-  int total_size = size1 + size2;
-  int endpos = startpos + range;
-#ifdef WCHAR
-  /* We need wchar_t* buffers correspond to cstring1, cstring2.  */
-  wchar_t *wcs_string1 = NULL, *wcs_string2 = NULL;
-  /* We need the size of wchar_t buffers correspond to csize1, csize2.  */
-  int wcs_size1 = 0, wcs_size2 = 0;
-  /* offset buffer for optimization. See convert_mbs_to_wc.  */
-  int *mbs_offset1 = NULL, *mbs_offset2 = NULL;
-  /* They hold whether each wchar_t is binary data or not.  */
-  char *is_binary = NULL;
-#endif /* WCHAR */
-
-  /* Check for out-of-range STARTPOS.  */
-  if (startpos < 0 || startpos > total_size)
-    return -1;
-
-  /* Fix up RANGE if it might eventually take us outside
-     the virtual concatenation of STRING1 and STRING2.
-     Make sure we won't move STARTPOS below 0 or above TOTAL_SIZE.  */
-  if (endpos < 0)
-    range = 0 - startpos;
-  else if (endpos > total_size)
-    range = total_size - startpos;
-
-  /* If the search isn't to be a backwards one, don't waste time in a
-     search for a pattern that must be anchored.  */
-  if (bufp->used > 0 && range > 0
-      && ((re_opcode_t) bufp->buffer[0] == begbuf
-	  /* `begline' is like `begbuf' if it cannot match at newlines.  */
-	  || ((re_opcode_t) bufp->buffer[0] == begline
-	      && !bufp->newline_anchor)))
-    {
-      if (startpos > 0)
-	return -1;
-      else
-	range = 1;
-    }
-
-#ifdef emacs
-  /* In a forward search for something that starts with \=.
-     don't keep searching past point.  */
-  if (bufp->used > 0 && (re_opcode_t) bufp->buffer[0] == at_dot && range > 0)
-    {
-      range = PT - startpos;
-      if (range <= 0)
-	return -1;
-    }
-#endif /* emacs */
-
-  /* Update the fastmap now if not correct already.  */
-  if (fastmap && !bufp->fastmap_accurate)
-    if (re_compile_fastmap (bufp) == -2)
-      return -2;
-
-#ifdef WCHAR
-  /* Allocate wchar_t array for wcs_string1 and wcs_string2 and
-     fill them with converted string.  */
-  if (size1 != 0)
-    {
-      if (size1 > MAX_ALLOCA_SIZE)
-	{
-	  wcs_string1 = TALLOC (size1 + 1, CHAR_T);
-	  mbs_offset1 = TALLOC (size1 + 1, int);
-	  is_binary = TALLOC (size1 + 1, char);
-	}
-      else
-	{
-	  wcs_string1 = REGEX_TALLOC (size1 + 1, CHAR_T);
-	  mbs_offset1 = REGEX_TALLOC (size1 + 1, int);
-	  is_binary = REGEX_TALLOC (size1 + 1, char);
-	}
-      if (!wcs_string1 || !mbs_offset1 || !is_binary)
-	{
-	  if (size1 > MAX_ALLOCA_SIZE)
-	    {
-	      free (wcs_string1);
-	      free (mbs_offset1);
-	      free (is_binary);
-	    }
-	  else
-	    {
-	      FREE_VAR (wcs_string1);
-	      FREE_VAR (mbs_offset1);
-	      FREE_VAR (is_binary);
-	    }
-	  return -2;
-	}
-      wcs_size1 = convert_mbs_to_wcs(wcs_string1, string1, size1,
-				     mbs_offset1, is_binary);
-      wcs_string1[wcs_size1] = L'\0'; /* for a sentinel  */
-      if (size1 > MAX_ALLOCA_SIZE)
-	free (is_binary);
-      else
-	FREE_VAR (is_binary);
-    }
-  if (size2 != 0)
-    {
-      if (size2 > MAX_ALLOCA_SIZE)
-	{
-	  wcs_string2 = TALLOC (size2 + 1, CHAR_T);
-	  mbs_offset2 = TALLOC (size2 + 1, int);
-	  is_binary = TALLOC (size2 + 1, char);
-	}
-      else
-	{
-	  wcs_string2 = REGEX_TALLOC (size2 + 1, CHAR_T);
-	  mbs_offset2 = REGEX_TALLOC (size2 + 1, int);
-	  is_binary = REGEX_TALLOC (size2 + 1, char);
-	}
-      if (!wcs_string2 || !mbs_offset2 || !is_binary)
-	{
-	  FREE_WCS_BUFFERS ();
-	  if (size2 > MAX_ALLOCA_SIZE)
-	    free (is_binary);
-	  else
-	    FREE_VAR (is_binary);
-	  return -2;
-	}
-      wcs_size2 = convert_mbs_to_wcs(wcs_string2, string2, size2,
-				     mbs_offset2, is_binary);
-      wcs_string2[wcs_size2] = L'\0'; /* for a sentinel  */
-      if (size2 > MAX_ALLOCA_SIZE)
-	free (is_binary);
-      else
-	FREE_VAR (is_binary);
-    }
-#endif /* WCHAR */
-
-
-  /* Loop through the string, looking for a place to start matching.  */
-  for (;;)
-    {
-      /* If a fastmap is supplied, skip quickly over characters that
-         cannot be the start of a match.  If the pattern can match the
-         null string, however, we don't need to skip characters; we want
-         the first null string.  */
-      if (fastmap && startpos < total_size && !bufp->can_be_null)
-	{
-	  if (range > 0)	/* Searching forwards.  */
-	    {
-	      register const char *d;
-	      register int lim = 0;
-	      int irange = range;
-
-              if (startpos < size1 && startpos + range >= size1)
-                lim = range - (size1 - startpos);
-
-	      d = (startpos >= size1 ? string2 - size1 : string1) + startpos;
-
-              /* Written out as an if-else to avoid testing `translate'
-                 inside the loop.  */
-	      if (translate)
-                while (range > lim
-                       && !fastmap[(unsigned char)
-				   translate[(unsigned char) *d++]])
-                  range--;
-	      else
-                while (range > lim && !fastmap[(unsigned char) *d++])
-                  range--;
-
-	      startpos += irange - range;
-	    }
-	  else				/* Searching backwards.  */
-	    {
-	      register CHAR_T c = (size1 == 0 || startpos >= size1
-				      ? string2[startpos - size1]
-				      : string1[startpos]);
-
-	      if (!fastmap[(unsigned char) TRANSLATE (c)])
-		goto advance;
-	    }
-	}
-
-      /* If can't match the null string, and that's all we have left, fail.  */
-      if (range >= 0 && startpos == total_size && fastmap
-          && !bufp->can_be_null)
-       {
-#ifdef WCHAR
-         FREE_WCS_BUFFERS ();
-#endif
-         return -1;
-       }
-
-#ifdef WCHAR
-      val = wcs_re_match_2_internal (bufp, string1, size1, string2,
-				     size2, startpos, regs, stop,
-				     wcs_string1, wcs_size1,
-				     wcs_string2, wcs_size2,
-				     mbs_offset1, mbs_offset2);
-#else /* BYTE */
-      val = byte_re_match_2_internal (bufp, string1, size1, string2,
-				      size2, startpos, regs, stop);
-#endif /* BYTE */
-
-#ifndef REGEX_MALLOC
-# ifdef C_ALLOCA
-      alloca (0);
-# endif
-#endif
-
-      if (val >= 0)
-	{
-#ifdef WCHAR
-	  FREE_WCS_BUFFERS ();
-#endif
-	  return startpos;
-	}
-
-      if (val == -2)
-	{
-#ifdef WCHAR
-	  FREE_WCS_BUFFERS ();
-#endif
-	  return -2;
-	}
-
-    advance:
-      if (!range)
-        break;
-      else if (range > 0)
-        {
-          range--;
-          startpos++;
-        }
-      else
-        {
-          range++;
-          startpos--;
-        }
-    }
-#ifdef WCHAR
-  FREE_WCS_BUFFERS ();
-#endif
-  return -1;
-}
-
-#ifdef WCHAR
-/* This converts PTR, a pointer into one of the search wchar_t strings
-   `string1' and `string2' into an multibyte string offset from the
-   beginning of that string. We use mbs_offset to optimize.
-   See convert_mbs_to_wcs.  */
-# define POINTER_TO_OFFSET(ptr)						\
-  (FIRST_STRING_P (ptr)							\
-   ? ((regoff_t)(mbs_offset1 != NULL? mbs_offset1[(ptr)-string1] : 0))	\
-   : ((regoff_t)((mbs_offset2 != NULL? mbs_offset2[(ptr)-string2] : 0)	\
-		 + csize1)))
-#else /* BYTE */
-/* This converts PTR, a pointer into one of the search strings `string1'
-   and `string2' into an offset from the beginning of that string.  */
-# define POINTER_TO_OFFSET(ptr)			\
-  (FIRST_STRING_P (ptr)				\
-   ? ((regoff_t) ((ptr) - string1))		\
-   : ((regoff_t) ((ptr) - string2 + size1)))
-#endif /* WCHAR */
-
-/* Macros for dealing with the split strings in re_match_2.  */
-
-#define MATCHING_IN_FIRST_STRING  (dend == end_match_1)
-
-/* Call before fetching a character with *d.  This switches over to
-   string2 if necessary.  */
-#define PREFETCH()							\
-  while (d == dend)						    	\
-    {									\
-      /* End of string2 => fail.  */					\
-      if (dend == end_match_2) 						\
-        goto fail;							\
-      /* End of string1 => advance to string2.  */ 			\
-      d = string2;						        \
-      dend = end_match_2;						\
-    }
-
-/* Test if at very beginning or at very end of the virtual concatenation
-   of `string1' and `string2'.  If only one string, it's `string2'.  */
-#define AT_STRINGS_BEG(d) ((d) == (size1 ? string1 : string2) || !size2)
-#define AT_STRINGS_END(d) ((d) == end2)
-
-
-/* Test if D points to a character which is word-constituent.  We have
-   two special cases to check for: if past the end of string1, look at
-   the first character in string2; and if before the beginning of
-   string2, look at the last character in string1.  */
-#ifdef WCHAR
-/* Use internationalized API instead of SYNTAX.  */
-# define WORDCHAR_P(d)							\
-  (iswalnum ((wint_t)((d) == end1 ? *string2				\
-           : (d) == string2 - 1 ? *(end1 - 1) : *(d))) != 0		\
-   || ((d) == end1 ? *string2						\
-       : (d) == string2 - 1 ? *(end1 - 1) : *(d)) == L'_')
-#else /* BYTE */
-# define WORDCHAR_P(d)							\
-  (SYNTAX ((d) == end1 ? *string2					\
-           : (d) == string2 - 1 ? *(end1 - 1) : *(d))			\
-   == Sword)
-#endif /* WCHAR */
-
-/* Disabled due to a compiler bug -- see comment at case wordbound */
-#if 0
-/* Test if the character before D and the one at D differ with respect
-   to being word-constituent.  */
-#define AT_WORD_BOUNDARY(d)						\
-  (AT_STRINGS_BEG (d) || AT_STRINGS_END (d)				\
-   || WORDCHAR_P (d - 1) != WORDCHAR_P (d))
-#endif
-
-/* Free everything we malloc.  */
-#ifdef MATCH_MAY_ALLOCATE
-# ifdef WCHAR
-#  define FREE_VARIABLES()						\
-  do {									\
-    REGEX_FREE_STACK (fail_stack.stack);				\
-    FREE_VAR (regstart);						\
-    FREE_VAR (regend);							\
-    FREE_VAR (old_regstart);						\
-    FREE_VAR (old_regend);						\
-    FREE_VAR (best_regstart);						\
-    FREE_VAR (best_regend);						\
-    FREE_VAR (reg_info);						\
-    FREE_VAR (reg_dummy);						\
-    FREE_VAR (reg_info_dummy);						\
-    if (!cant_free_wcs_buf)						\
-      {									\
-        FREE_VAR (string1);						\
-        FREE_VAR (string2);						\
-        FREE_VAR (mbs_offset1);						\
-        FREE_VAR (mbs_offset2);						\
-      }									\
-  } while (0)
-# else /* BYTE */
-#  define FREE_VARIABLES()						\
-  do {									\
-    REGEX_FREE_STACK (fail_stack.stack);				\
-    FREE_VAR (regstart);						\
-    FREE_VAR (regend);							\
-    FREE_VAR (old_regstart);						\
-    FREE_VAR (old_regend);						\
-    FREE_VAR (best_regstart);						\
-    FREE_VAR (best_regend);						\
-    FREE_VAR (reg_info);						\
-    FREE_VAR (reg_dummy);						\
-    FREE_VAR (reg_info_dummy);						\
-  } while (0)
-# endif /* WCHAR */
-#else
-# ifdef WCHAR
-#  define FREE_VARIABLES()						\
-  do {									\
-    if (!cant_free_wcs_buf)						\
-      {									\
-        FREE_VAR (string1);						\
-        FREE_VAR (string2);						\
-        FREE_VAR (mbs_offset1);						\
-        FREE_VAR (mbs_offset2);						\
-      }									\
-  } while (0)
-# else /* BYTE */
-#  define FREE_VARIABLES() ((void)0) /* Do nothing!  But inhibit gcc warning. */
-# endif /* WCHAR */
-#endif /* not MATCH_MAY_ALLOCATE */
-
-/* These values must meet several constraints.  They must not be valid
-   register values; since we have a limit of 255 registers (because
-   we use only one byte in the pattern for the register number), we can
-   use numbers larger than 255.  They must differ by 1, because of
-   NUM_FAILURE_ITEMS above.  And the value for the lowest register must
-   be larger than the value for the highest register, so we do not try
-   to actually save any registers when none are active.  */
-#define NO_HIGHEST_ACTIVE_REG (1 << BYTEWIDTH)
-#define NO_LOWEST_ACTIVE_REG (NO_HIGHEST_ACTIVE_REG + 1)
-
-#else /* not INSIDE_RECURSION */
-/* Matching routines.  */
-
-#ifndef emacs   /* Emacs never uses this.  */
-/* re_match is like re_match_2 except it takes only a single string.  */
-
-int
-re_match (
-     struct re_pattern_buffer *bufp,
-     const char *string,
-     int size, int pos,
-     struct re_registers *regs)
-{
-  int result;
-# ifdef MBS_SUPPORT
-  if (MB_CUR_MAX != 1)
-    result = wcs_re_match_2_internal (bufp, NULL, 0, string, size,
-				      pos, regs, size,
-				      NULL, 0, NULL, 0, NULL, NULL);
-  else
-# endif
-    result = byte_re_match_2_internal (bufp, NULL, 0, string, size,
-				  pos, regs, size);
-# ifndef REGEX_MALLOC
-#  ifdef C_ALLOCA
-  alloca (0);
-#  endif
-# endif
-  return result;
-}
-#endif /* not emacs */
-
-#endif /* not INSIDE_RECURSION */
-
-#ifdef INSIDE_RECURSION
-static boolean PREFIX(group_match_null_string_p) (UCHAR_T **p,
-						    UCHAR_T *end,
-					PREFIX(register_info_type) *reg_info);
-static boolean PREFIX(alt_match_null_string_p) (UCHAR_T *p,
-						  UCHAR_T *end,
-					PREFIX(register_info_type) *reg_info);
-static boolean PREFIX(common_op_match_null_string_p) (UCHAR_T **p,
-							UCHAR_T *end,
-					PREFIX(register_info_type) *reg_info);
-static int PREFIX(bcmp_translate) (const CHAR_T *s1, const CHAR_T *s2,
-				     int len, __RE_TRANSLATE_TYPE translate);
-#else /* not INSIDE_RECURSION */
-
-/* re_match_2 matches the compiled pattern in BUFP against the
-   the (virtual) concatenation of STRING1 and STRING2 (of length SIZE1
-   and SIZE2, respectively).  We start matching at POS, and stop
-   matching at STOP.
-
-   If REGS is non-null and the `no_sub' field of BUFP is nonzero, we
-   store offsets for the substring each group matched in REGS.  See the
-   documentation for exactly how many groups we fill.
-
-   We return -1 if no match, -2 if an internal error (such as the
-   failure stack overflowing).  Otherwise, we return the length of the
-   matched substring.  */
-
-int
-re_match_2 (
-     struct re_pattern_buffer *bufp,
-     const char *string1, int size1,
-     const char *string2, int size2,
-     int pos,
-     struct re_registers *regs,
-     int stop)
-{
-  int result;
-# ifdef MBS_SUPPORT
-  if (MB_CUR_MAX != 1)
-    result = wcs_re_match_2_internal (bufp, string1, size1, string2, size2,
-				      pos, regs, stop,
-				      NULL, 0, NULL, 0, NULL, NULL);
-  else
-# endif
-    result = byte_re_match_2_internal (bufp, string1, size1, string2, size2,
-				  pos, regs, stop);
-
-#ifndef REGEX_MALLOC
-# ifdef C_ALLOCA
-  alloca (0);
-# endif
-#endif
-  return result;
-}
-
-#endif /* not INSIDE_RECURSION */
-
-#ifdef INSIDE_RECURSION
-
-#ifdef WCHAR
-static int count_mbs_length (int *, int);
-
-/* This check the substring (from 0, to length) of the multibyte string,
-   to which offset_buffer correspond. And count how many wchar_t_characters
-   the substring occupy. We use offset_buffer to optimization.
-   See convert_mbs_to_wcs.  */
-
-static int
-count_mbs_length(
-     int *offset_buffer,
-     int length)
-{
-  int upper, lower;
-
-  /* Check whether the size is valid.  */
-  if (length < 0)
-    return -1;
-
-  if (offset_buffer == NULL)
-    return 0;
-
-  /* If there are no multibyte character, offset_buffer[i] == i.
-   Optmize for this case.  */
-  if (offset_buffer[length] == length)
-    return length;
-
-  /* Set up upper with length. (because for all i, offset_buffer[i] >= i)  */
-  upper = length;
-  lower = 0;
-
-  while (true)
-    {
-      int middle = (lower + upper) / 2;
-      if (middle == lower || middle == upper)
-	break;
-      if (offset_buffer[middle] > length)
-	upper = middle;
-      else if (offset_buffer[middle] < length)
-	lower = middle;
-      else
-	return middle;
-    }
-
-  return -1;
-}
-#endif /* WCHAR */
-
-/* This is a separate function so that we can force an alloca cleanup
-   afterwards.  */
-#ifdef WCHAR
-static int
-wcs_re_match_2_internal (
-     struct re_pattern_buffer *bufp,
-     const char *cstring1, int csize1,
-     const char *cstring2, int csize2,
-     int pos,
-     struct re_registers *regs,
-     int stop,
-     /* string1 == string2 == NULL means string1/2, size1/2 and
-	mbs_offset1/2 need seting up in this function.  */
-     /* We need wchar_t* buffers correspond to cstring1, cstring2.  */
-     /* We need the size of wchar_t buffers correspond to csize1, csize2.  */
-     wchar_t *string1, int size1,
-     wchar_t *string2, int size2,
-     /* offset buffer for optimization. See convert_mbs_to_wc.  */
-     int *mbs_offset1, int *mbs_offset2)
-#else /* BYTE */
-static int
-byte_re_match_2_internal (
-     struct re_pattern_buffer *bufp,
-     const char *string1, int size1,
-     const char *string2, int size2,
-     int pos,
-     struct re_registers *regs,
-     int stop)
-#endif /* BYTE */
-{
-  /* General temporaries.  */
-  int mcnt;
-  UCHAR_T *p1;
-#ifdef WCHAR
-  /* They hold whether each wchar_t is binary data or not.  */
-  char *is_binary = NULL;
-  /* If true, we can't free string1/2, mbs_offset1/2.  */
-  int cant_free_wcs_buf = 1;
-#endif /* WCHAR */
-
-  /* Just past the end of the corresponding string.  */
-  const CHAR_T *end1, *end2;
-
-  /* Pointers into string1 and string2, just past the last characters in
-     each to consider matching.  */
-  const CHAR_T *end_match_1, *end_match_2;
-
-  /* Where we are in the data, and the end of the current string.  */
-  const CHAR_T *d, *dend;
-
-  /* Where we are in the pattern, and the end of the pattern.  */
-#ifdef WCHAR
-  UCHAR_T *pattern, *p;
-  register UCHAR_T *pend;
-#else /* BYTE */
-  UCHAR_T *p = bufp->buffer;
-  register UCHAR_T *pend = p + bufp->used;
-#endif /* WCHAR */
-
-  /* Mark the opcode just after a start_memory, so we can test for an
-     empty subpattern when we get to the stop_memory.  */
-  UCHAR_T *just_past_start_mem = 0;
-
-  /* We use this to map every character in the string.  */
-  __RE_TRANSLATE_TYPE translate = bufp->translate;
-
-  /* Failure point stack.  Each place that can handle a failure further
-     down the line pushes a failure point on this stack.  It consists of
-     restart, regend, and reg_info for all registers corresponding to
-     the subexpressions we're currently inside, plus the number of such
-     registers, and, finally, two char *'s.  The first char * is where
-     to resume scanning the pattern; the second one is where to resume
-     scanning the strings.  If the latter is zero, the failure point is
-     a ``dummy''; if a failure happens and the failure point is a dummy,
-     it gets discarded and the next next one is tried.  */
-#ifdef MATCH_MAY_ALLOCATE /* otherwise, this is global.  */
-  PREFIX(fail_stack_type) fail_stack;
-#endif
-#ifdef DEBUG
-  static unsigned failure_id;
-  unsigned nfailure_points_pushed = 0, nfailure_points_popped = 0;
-#endif
-
-#ifdef REL_ALLOC
-  /* This holds the pointer to the failure stack, when
-     it is allocated relocatably.  */
-  fail_stack_elt_t *failure_stack_ptr;
-#endif
-
-  /* We fill all the registers internally, independent of what we
-     return, for use in backreferences.  The number here includes
-     an element for register zero.  */
-  size_t num_regs = bufp->re_nsub + 1;
-
-  /* The currently active registers.  */
-  active_reg_t lowest_active_reg = NO_LOWEST_ACTIVE_REG;
-  active_reg_t highest_active_reg = NO_HIGHEST_ACTIVE_REG;
-
-  /* Information on the contents of registers. These are pointers into
-     the input strings; they record just what was matched (on this
-     attempt) by a subexpression part of the pattern, that is, the
-     regnum-th regstart pointer points to where in the pattern we began
-     matching and the regnum-th regend points to right after where we
-     stopped matching the regnum-th subexpression.  (The zeroth register
-     keeps track of what the whole pattern matches.)  */
-#ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global.  */
-  const CHAR_T **regstart, **regend;
-#endif
-
-  /* If a group that's operated upon by a repetition operator fails to
-     match anything, then the register for its start will need to be
-     restored because it will have been set to wherever in the string we
-     are when we last see its open-group operator.  Similarly for a
-     register's end.  */
-#ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global.  */
-  const CHAR_T **old_regstart, **old_regend;
-#endif
-
-  /* The is_active field of reg_info helps us keep track of which (possibly
-     nested) subexpressions we are currently in. The matched_something
-     field of reg_info[reg_num] helps us tell whether or not we have
-     matched any of the pattern so far this time through the reg_num-th
-     subexpression.  These two fields get reset each time through any
-     loop their register is in.  */
-#ifdef MATCH_MAY_ALLOCATE /* otherwise, this is global.  */
-  PREFIX(register_info_type) *reg_info;
-#endif
-
-  /* The following record the register info as found in the above
-     variables when we find a match better than any we've seen before.
-     This happens as we backtrack through the failure points, which in
-     turn happens only if we have not yet matched the entire string. */
-  unsigned best_regs_set = false;
-#ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global.  */
-  const CHAR_T **best_regstart, **best_regend;
-#endif
-
-  /* Logically, this is `best_regend[0]'.  But we don't want to have to
-     allocate space for that if we're not allocating space for anything
-     else (see below).  Also, we never need info about register 0 for
-     any of the other register vectors, and it seems rather a kludge to
-     treat `best_regend' differently than the rest.  So we keep track of
-     the end of the best match so far in a separate variable.  We
-     initialize this to NULL so that when we backtrack the first time
-     and need to test it, it's not garbage.  */
-  const CHAR_T *match_end = NULL;
-
-  /* This helps SET_REGS_MATCHED avoid doing redundant work.  */
-  int set_regs_matched_done = 0;
-
-  /* Used when we pop values we don't care about.  */
-#ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global.  */
-  const CHAR_T **reg_dummy;
-  PREFIX(register_info_type) *reg_info_dummy;
-#endif
-
-#ifdef DEBUG
-  /* Counts the total number of registers pushed.  */
-  unsigned num_regs_pushed = 0;
-#endif
-
-  DEBUG_PRINT1 ("\n\nEntering re_match_2.\n");
-
-  INIT_FAIL_STACK ();
-
-#ifdef MATCH_MAY_ALLOCATE
-  /* Do not bother to initialize all the register variables if there are
-     no groups in the pattern, as it takes a fair amount of time.  If
-     there are groups, we include space for register 0 (the whole
-     pattern), even though we never use it, since it simplifies the
-     array indexing.  We should fix this.  */
-  if (bufp->re_nsub)
-    {
-      regstart = REGEX_TALLOC (num_regs, const CHAR_T *);
-      regend = REGEX_TALLOC (num_regs, const CHAR_T *);
-      old_regstart = REGEX_TALLOC (num_regs, const CHAR_T *);
-      old_regend = REGEX_TALLOC (num_regs, const CHAR_T *);
-      best_regstart = REGEX_TALLOC (num_regs, const CHAR_T *);
-      best_regend = REGEX_TALLOC (num_regs, const CHAR_T *);
-      reg_info = REGEX_TALLOC (num_regs, PREFIX(register_info_type));
-      reg_dummy = REGEX_TALLOC (num_regs, const CHAR_T *);
-      reg_info_dummy = REGEX_TALLOC (num_regs, PREFIX(register_info_type));
-
-      if (!(regstart && regend && old_regstart && old_regend && reg_info
-            && best_regstart && best_regend && reg_dummy && reg_info_dummy))
-        {
-          FREE_VARIABLES ();
-          return -2;
-        }
-    }
-  else
-    {
-      /* We must initialize all our variables to NULL, so that
-         `FREE_VARIABLES' doesn't try to free them.  */
-      regstart = regend = old_regstart = old_regend = best_regstart
-        = best_regend = reg_dummy = NULL;
-      reg_info = reg_info_dummy = (PREFIX(register_info_type) *) NULL;
-    }
-#endif /* MATCH_MAY_ALLOCATE */
-
-  /* The starting position is bogus.  */
-#ifdef WCHAR
-  if (pos < 0 || pos > csize1 + csize2)
-#else /* BYTE */
-  if (pos < 0 || pos > size1 + size2)
-#endif
-    {
-      FREE_VARIABLES ();
-      return -1;
-    }
-
-#ifdef WCHAR
-  /* Allocate wchar_t array for string1 and string2 and
-     fill them with converted string.  */
-  if (string1 == NULL && string2 == NULL)
-    {
-      /* We need seting up buffers here.  */
-
-      /* We must free wcs buffers in this function.  */
-      cant_free_wcs_buf = 0;
-
-      if (csize1 != 0)
-	{
-	  string1 = REGEX_TALLOC (csize1 + 1, CHAR_T);
-	  mbs_offset1 = REGEX_TALLOC (csize1 + 1, int);
-	  is_binary = REGEX_TALLOC (csize1 + 1, char);
-	  if (!string1 || !mbs_offset1 || !is_binary)
-	    {
-	      FREE_VAR (string1);
-	      FREE_VAR (mbs_offset1);
-	      FREE_VAR (is_binary);
-	      return -2;
-	    }
-	}
-      if (csize2 != 0)
-	{
-	  string2 = REGEX_TALLOC (csize2 + 1, CHAR_T);
-	  mbs_offset2 = REGEX_TALLOC (csize2 + 1, int);
-	  is_binary = REGEX_TALLOC (csize2 + 1, char);
-	  if (!string2 || !mbs_offset2 || !is_binary)
-	    {
-	      FREE_VAR (string1);
-	      FREE_VAR (mbs_offset1);
-	      FREE_VAR (string2);
-	      FREE_VAR (mbs_offset2);
-	      FREE_VAR (is_binary);
-	      return -2;
-	    }
-	  size2 = convert_mbs_to_wcs(string2, cstring2, csize2,
-				     mbs_offset2, is_binary);
-	  string2[size2] = L'\0'; /* for a sentinel  */
-	  FREE_VAR (is_binary);
-	}
-    }
-
-  /* We need to cast pattern to (wchar_t*), because we casted this compiled
-     pattern to (char*) in regex_compile.  */
-  p = pattern = (CHAR_T*)bufp->buffer;
-  pend = (CHAR_T*)(bufp->buffer + bufp->used);
-
-#endif /* WCHAR */
-
-  /* Initialize subexpression text positions to -1 to mark ones that no
-     start_memory/stop_memory has been seen for. Also initialize the
-     register information struct.  */
-  for (mcnt = 1; (unsigned) mcnt < num_regs; mcnt++)
-    {
-      regstart[mcnt] = regend[mcnt]
-        = old_regstart[mcnt] = old_regend[mcnt] = REG_UNSET_VALUE;
-
-      REG_MATCH_NULL_STRING_P (reg_info[mcnt]) = MATCH_NULL_UNSET_VALUE;
-      IS_ACTIVE (reg_info[mcnt]) = 0;
-      MATCHED_SOMETHING (reg_info[mcnt]) = 0;
-      EVER_MATCHED_SOMETHING (reg_info[mcnt]) = 0;
-    }
-
-  /* We move `string1' into `string2' if the latter's empty -- but not if
-     `string1' is null.  */
-  if (size2 == 0 && string1 != NULL)
-    {
-      string2 = string1;
-      size2 = size1;
-      string1 = 0;
-      size1 = 0;
-#ifdef WCHAR
-      mbs_offset2 = mbs_offset1;
-      csize2 = csize1;
-      mbs_offset1 = NULL;
-      csize1 = 0;
-#endif
-    }
-  end1 = string1 + size1;
-  end2 = string2 + size2;
-
-  /* Compute where to stop matching, within the two strings.  */
-#ifdef WCHAR
-  if (stop <= csize1)
-    {
-      mcnt = count_mbs_length(mbs_offset1, stop);
-      end_match_1 = string1 + mcnt;
-      end_match_2 = string2;
-    }
-  else
-    {
-      if (stop > csize1 + csize2)
-	stop = csize1 + csize2;
-      end_match_1 = end1;
-      mcnt = count_mbs_length(mbs_offset2, stop-csize1);
-      end_match_2 = string2 + mcnt;
-    }
-  if (mcnt < 0)
-    { /* count_mbs_length return error.  */
-      FREE_VARIABLES ();
-      return -1;
-    }
-#else
-  if (stop <= size1)
-    {
-      end_match_1 = string1 + stop;
-      end_match_2 = string2;
-    }
-  else
-    {
-      end_match_1 = end1;
-      end_match_2 = string2 + stop - size1;
-    }
-#endif /* WCHAR */
-
-  /* `p' scans through the pattern as `d' scans through the data.
-     `dend' is the end of the input string that `d' points within.  `d'
-     is advanced into the following input string whenever necessary, but
-     this happens before fetching; therefore, at the beginning of the
-     loop, `d' can be pointing at the end of a string, but it cannot
-     equal `string2'.  */
-#ifdef WCHAR
-  if (size1 > 0 && pos <= csize1)
-    {
-      mcnt = count_mbs_length(mbs_offset1, pos);
-      d = string1 + mcnt;
-      dend = end_match_1;
-    }
-  else
-    {
-      mcnt = count_mbs_length(mbs_offset2, pos-csize1);
-      d = string2 + mcnt;
-      dend = end_match_2;
-    }
-
-  if (mcnt < 0)
-    { /* count_mbs_length return error.  */
-      FREE_VARIABLES ();
-      return -1;
-    }
-#else
-  if (size1 > 0 && pos <= size1)
-    {
-      d = string1 + pos;
-      dend = end_match_1;
-    }
-  else
-    {
-      d = string2 + pos - size1;
-      dend = end_match_2;
-    }
-#endif /* WCHAR */
-
-  DEBUG_PRINT1 ("The compiled pattern is:\n");
-  DEBUG_PRINT_COMPILED_PATTERN (bufp, p, pend);
-  DEBUG_PRINT1 ("The string to match is: `");
-  DEBUG_PRINT_DOUBLE_STRING (d, string1, size1, string2, size2);
-  DEBUG_PRINT1 ("'\n");
-
-  /* This loops over pattern commands.  It exits by returning from the
-     function if the match is complete, or it drops through if the match
-     fails at this starting point in the input data.  */
-  for (;;)
-    {
-#ifdef _LIBC
-      DEBUG_PRINT2 ("\n%p: ", p);
-#else
-      DEBUG_PRINT2 ("\n0x%x: ", p);
-#endif
-
-      if (p == pend)
-	{ /* End of pattern means we might have succeeded.  */
-          DEBUG_PRINT1 ("end of pattern ... ");
-
-	  /* If we haven't matched the entire string, and we want the
-             longest match, try backtracking.  */
-          if (d != end_match_2)
-	    {
-	      /* 1 if this match ends in the same string (string1 or string2)
-		 as the best previous match.  */
-	      boolean same_str_p = (FIRST_STRING_P (match_end)
-				    == MATCHING_IN_FIRST_STRING);
-	      /* 1 if this match is the best seen so far.  */
-	      boolean best_match_p;
-
-	      /* AIX compiler got confused when this was combined
-		 with the previous declaration.  */
-	      if (same_str_p)
-		best_match_p = d > match_end;
-	      else
-		best_match_p = !MATCHING_IN_FIRST_STRING;
-
-              DEBUG_PRINT1 ("backtracking.\n");
-
-              if (!FAIL_STACK_EMPTY ())
-                { /* More failure points to try.  */
-
-                  /* If exceeds best match so far, save it.  */
-                  if (!best_regs_set || best_match_p)
-                    {
-                      best_regs_set = true;
-                      match_end = d;
-
-                      DEBUG_PRINT1 ("\nSAVING match as best so far.\n");
-
-                      for (mcnt = 1; (unsigned) mcnt < num_regs; mcnt++)
-                        {
-                          best_regstart[mcnt] = regstart[mcnt];
-                          best_regend[mcnt] = regend[mcnt];
-                        }
-                    }
-                  goto fail;
-                }
-
-              /* If no failure points, don't restore garbage.  And if
-                 last match is real best match, don't restore second
-                 best one. */
-              else if (best_regs_set && !best_match_p)
-                {
-  	        restore_best_regs:
-                  /* Restore best match.  It may happen that `dend ==
-                     end_match_1' while the restored d is in string2.
-                     For example, the pattern `x.*y.*z' against the
-                     strings `x-' and `y-z-', if the two strings are
-                     not consecutive in memory.  */
-                  DEBUG_PRINT1 ("Restoring best registers.\n");
-
-                  d = match_end;
-                  dend = ((d >= string1 && d <= end1)
-		           ? end_match_1 : end_match_2);
-
-		  for (mcnt = 1; (unsigned) mcnt < num_regs; mcnt++)
-		    {
-		      regstart[mcnt] = best_regstart[mcnt];
-		      regend[mcnt] = best_regend[mcnt];
-		    }
-                }
-            } /* d != end_match_2 */
-
-	succeed_label:
-          DEBUG_PRINT1 ("Accepting match.\n");
-          /* If caller wants register contents data back, do it.  */
-          if (regs && !bufp->no_sub)
-	    {
-	      /* Have the register data arrays been allocated?  */
-              if (bufp->regs_allocated == REGS_UNALLOCATED)
-                { /* No.  So allocate them with malloc.  We need one
-                     extra element beyond `num_regs' for the `-1' marker
-                     GNU code uses.  */
-/* regex specs say:
- *  "If REGS_UNALLOCATED, allocate space in the regs structure
- *   for max(RE_NREGS, re_nsub + 1) groups"
- * but real-world testsuites fail with contrived examples
- * with lots of groups.
- * I don't see why we can't just allocate exact needed number.
- * Incidentally, it makes RE_NREGS unused.
- *
- * regs->num_regs = MAX (RE_NREGS, num_regs + 1); - VERY WRONG
- * regs->num_regs = MIN (RE_NREGS, num_regs + 1); - slightly less wrong
- * good one which passes uclibc test/regex/tst-regex2.c:
- */
-                  regs->num_regs = num_regs + 1;
-                  regs->start = TALLOC (regs->num_regs, regoff_t);
-                  regs->end = TALLOC (regs->num_regs, regoff_t);
-                  if (regs->start == NULL || regs->end == NULL)
-		    {
-		      FREE_VARIABLES ();
-		      return -2;
-		    }
-                  bufp->regs_allocated = REGS_REALLOCATE;
-                }
-              else if (bufp->regs_allocated == REGS_REALLOCATE)
-                { /* Yes.  If we need more elements than were already
-                     allocated, reallocate them.  If we need fewer, just
-                     leave it alone.  */
-                  if (regs->num_regs < num_regs + 1)
-                    {
-                      regs->num_regs = num_regs + 1;
-                      RETALLOC (regs->start, regs->num_regs, regoff_t);
-                      RETALLOC (regs->end, regs->num_regs, regoff_t);
-                      if (regs->start == NULL || regs->end == NULL)
-			{
-			  FREE_VARIABLES ();
-			  return -2;
-			}
-                    }
-                }
-              else
-		{
-		  /* These braces fend off a "empty body in an else-statement"
-		     warning under GCC when assert expands to nothing.  */
-		  assert (bufp->regs_allocated == REGS_FIXED);
-		}
-
-              /* Convert the pointer data in `regstart' and `regend' to
-                 indices.  Register zero has to be set differently,
-                 since we haven't kept track of any info for it.  */
-              if (regs->num_regs > 0)
-                {
-                  regs->start[0] = pos;
-#ifdef WCHAR
-		  if (MATCHING_IN_FIRST_STRING)
-		    regs->end[0] = mbs_offset1 != NULL ?
-					mbs_offset1[d-string1] : 0;
-		  else
-		    regs->end[0] = csize1 + (mbs_offset2 != NULL ?
-					     mbs_offset2[d-string2] : 0);
-#else
-                  regs->end[0] = (MATCHING_IN_FIRST_STRING
-				  ? ((regoff_t) (d - string1))
-			          : ((regoff_t) (d - string2 + size1)));
-#endif /* WCHAR */
-                }
-
-              /* Go through the first `min (num_regs, regs->num_regs)'
-                 registers, since that is all we initialized.  */
-	      for (mcnt = 1; (unsigned) mcnt < MIN (num_regs, regs->num_regs);
-		   mcnt++)
-		{
-                  if (REG_UNSET (regstart[mcnt]) || REG_UNSET (regend[mcnt]))
-                    regs->start[mcnt] = regs->end[mcnt] = -1;
-                  else
-                    {
-		      regs->start[mcnt]
-			= (regoff_t) POINTER_TO_OFFSET (regstart[mcnt]);
-                      regs->end[mcnt]
-			= (regoff_t) POINTER_TO_OFFSET (regend[mcnt]);
-                    }
-		}
-
-              /* If the regs structure we return has more elements than
-                 were in the pattern, set the extra elements to -1.  If
-                 we (re)allocated the registers, this is the case,
-                 because we always allocate enough to have at least one
-                 -1 at the end.  */
-              for (mcnt = num_regs; (unsigned) mcnt < regs->num_regs; mcnt++)
-                regs->start[mcnt] = regs->end[mcnt] = -1;
-	    } /* regs && !bufp->no_sub */
-
-          DEBUG_PRINT4 ("%u failure points pushed, %u popped (%u remain).\n",
-                        nfailure_points_pushed, nfailure_points_popped,
-                        nfailure_points_pushed - nfailure_points_popped);
-          DEBUG_PRINT2 ("%u registers pushed.\n", num_regs_pushed);
-
-#ifdef WCHAR
-	  if (MATCHING_IN_FIRST_STRING)
-	    mcnt = mbs_offset1 != NULL ? mbs_offset1[d-string1] : 0;
-	  else
-	    mcnt = (mbs_offset2 != NULL ? mbs_offset2[d-string2] : 0) +
-			csize1;
-          mcnt -= pos;
-#else
-          mcnt = d - pos - (MATCHING_IN_FIRST_STRING
-			    ? string1
-			    : string2 - size1);
-#endif /* WCHAR */
-
-          DEBUG_PRINT2 ("Returning %d from re_match_2.\n", mcnt);
-
-          FREE_VARIABLES ();
-          return mcnt;
-        }
-
-      /* Otherwise match next pattern command.  */
-      switch (SWITCH_ENUM_CAST ((re_opcode_t) *p++))
-	{
-        /* Ignore these.  Used to ignore the n of succeed_n's which
-           currently have n == 0.  */
-        case no_op:
-          DEBUG_PRINT1 ("EXECUTING no_op.\n");
-          break;
-
-	case succeed:
-          DEBUG_PRINT1 ("EXECUTING succeed.\n");
-	  goto succeed_label;
-
-        /* Match the next n pattern characters exactly.  The following
-           byte in the pattern defines n, and the n bytes after that
-           are the characters to match.  */
-	case exactn:
-#ifdef MBS_SUPPORT
-	case exactn_bin:
-#endif
-	  mcnt = *p++;
-          DEBUG_PRINT2 ("EXECUTING exactn %d.\n", mcnt);
-
-          /* This is written out as an if-else so we don't waste time
-             testing `translate' inside the loop.  */
-          if (translate)
-	    {
-	      do
-		{
-		  PREFETCH ();
-#ifdef WCHAR
-		  if (*d <= 0xff)
-		    {
-		      if ((UCHAR_T) translate[(unsigned char) *d++]
-			  != (UCHAR_T) *p++)
-			goto fail;
-		    }
-		  else
-		    {
-		      if (*d++ != (CHAR_T) *p++)
-			goto fail;
-		    }
-#else
-		  if ((UCHAR_T) translate[(unsigned char) *d++]
-		      != (UCHAR_T) *p++)
-                    goto fail;
-#endif /* WCHAR */
-		}
-	      while (--mcnt);
-	    }
-	  else
-	    {
-	      do
-		{
-		  PREFETCH ();
-		  if (*d++ != (CHAR_T) *p++) goto fail;
-		}
-	      while (--mcnt);
-	    }
-	  SET_REGS_MATCHED ();
-          break;
-
-
-        /* Match any character except possibly a newline or a null.  */
-	case anychar:
-          DEBUG_PRINT1 ("EXECUTING anychar.\n");
-
-          PREFETCH ();
-
-          if ((!(bufp->syntax & RE_DOT_NEWLINE) && TRANSLATE (*d) == '\n')
-              || (bufp->syntax & RE_DOT_NOT_NULL && TRANSLATE (*d) == '\000'))
-	    goto fail;
-
-          SET_REGS_MATCHED ();
-          DEBUG_PRINT2 ("  Matched `%ld'.\n", (long int) *d);
-          d++;
-	  break;
-
-
-	case charset:
-	case charset_not:
-	  {
-	    register UCHAR_T c;
-#ifdef WCHAR
-	    unsigned int i, char_class_length, coll_symbol_length,
-              equiv_class_length, ranges_length, chars_length, length;
-	    CHAR_T *workp, *workp2, *charset_top;
-#define WORK_BUFFER_SIZE 128
-            CHAR_T str_buf[WORK_BUFFER_SIZE];
-# ifdef _LIBC
-	    uint32_t nrules;
-# endif /* _LIBC */
-#endif /* WCHAR */
-	    boolean not = (re_opcode_t) *(p - 1) == charset_not;
-
-            DEBUG_PRINT2 ("EXECUTING charset%s.\n", not ? "_not" : "");
-	    PREFETCH ();
-	    c = TRANSLATE (*d); /* The character to match.  */
-#ifdef WCHAR
-# ifdef _LIBC
-	    nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
-# endif /* _LIBC */
-	    charset_top = p - 1;
-	    char_class_length = *p++;
-	    coll_symbol_length = *p++;
-	    equiv_class_length = *p++;
-	    ranges_length = *p++;
-	    chars_length = *p++;
-	    /* p points charset[6], so the address of the next instruction
-	       (charset[l+m+n+2o+k+p']) equals p[l+m+n+2*o+p'],
-	       where l=length of char_classes, m=length of collating_symbol,
-	       n=equivalence_class, o=length of char_range,
-	       p'=length of character.  */
-	    workp = p;
-	    /* Update p to indicate the next instruction.  */
-	    p += char_class_length + coll_symbol_length+ equiv_class_length +
-              2*ranges_length + chars_length;
-
-            /* match with char_class?  */
-	    for (i = 0; i < char_class_length ; i += CHAR_CLASS_SIZE)
-	      {
-		wctype_t wctype;
-		uintptr_t alignedp = ((uintptr_t)workp
-				      + __alignof__(wctype_t) - 1)
-		  		      & ~(uintptr_t)(__alignof__(wctype_t) - 1);
-		wctype = *((wctype_t*)alignedp);
-		workp += CHAR_CLASS_SIZE;
-# ifdef _LIBC
-		if (__iswctype((wint_t)c, wctype))
-		  goto char_set_matched;
-# else
-		if (iswctype((wint_t)c, wctype))
-		  goto char_set_matched;
-# endif
-	      }
-
-            /* match with collating_symbol?  */
-# ifdef _LIBC
-	    if (nrules != 0)
-	      {
-		const unsigned char *extra = (const unsigned char *)
-		  _NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB);
-
-		for (workp2 = workp + coll_symbol_length ; workp < workp2 ;
-		     workp++)
-		  {
-		    int32_t *wextra;
-		    wextra = (int32_t*)(extra + *workp++);
-		    for (i = 0; i < *wextra; ++i)
-		      if (TRANSLATE(d[i]) != wextra[1 + i])
-			break;
-
-		    if (i == *wextra)
-		      {
-			/* Update d, however d will be incremented at
-			   char_set_matched:, we decrement d here.  */
-			d += i - 1;
-			goto char_set_matched;
-		      }
-		  }
-	      }
-	    else /* (nrules == 0) */
-# endif
-	      /* If we can't look up collation data, we use wcscoll
-		 instead.  */
-	      {
-		for (workp2 = workp + coll_symbol_length ; workp < workp2 ;)
-		  {
-		    const CHAR_T *backup_d = d, *backup_dend = dend;
-# ifdef _LIBC
-		    length = __wcslen (workp);
-# else
-		    length = wcslen (workp);
-# endif
-
-		    /* If wcscoll(the collating symbol, whole string) > 0,
-		       any substring of the string never match with the
-		       collating symbol.  */
-# ifdef _LIBC
-		    if (__wcscoll (workp, d) > 0)
-# else
-		    if (wcscoll (workp, d) > 0)
-# endif
-		      {
-			workp += length + 1;
-			continue;
-		      }
-
-		    /* First, we compare the collating symbol with
-		       the first character of the string.
-		       If it don't match, we add the next character to
-		       the compare buffer in turn.  */
-		    for (i = 0 ; i < WORK_BUFFER_SIZE-1 ; i++, d++)
-		      {
-			int match;
-			if (d == dend)
-			  {
-			    if (dend == end_match_2)
-			      break;
-			    d = string2;
-			    dend = end_match_2;
-			  }
-
-			/* add next character to the compare buffer.  */
-			str_buf[i] = TRANSLATE(*d);
-			str_buf[i+1] = '\0';
-
-# ifdef _LIBC
-			match = __wcscoll (workp, str_buf);
-# else
-			match = wcscoll (workp, str_buf);
-# endif
-			if (match == 0)
-			  goto char_set_matched;
-
-			if (match < 0)
-			  /* (str_buf > workp) indicate (str_buf + X > workp),
-			     because for all X (str_buf + X > str_buf).
-			     So we don't need continue this loop.  */
-			  break;
-
-			/* Otherwise(str_buf < workp),
-			   (str_buf+next_character) may equals (workp).
-			   So we continue this loop.  */
-		      }
-		    /* not matched */
-		    d = backup_d;
-		    dend = backup_dend;
-		    workp += length + 1;
-		  }
-              }
-            /* match with equivalence_class?  */
-# ifdef _LIBC
-	    if (nrules != 0)
-	      {
-                const CHAR_T *backup_d = d, *backup_dend = dend;
-		/* Try to match the equivalence class against
-		   those known to the collate implementation.  */
-		const int32_t *table;
-		const int32_t *weights;
-		const int32_t *extra;
-		const int32_t *indirect;
-		int32_t idx, idx2;
-		wint_t *cp;
-		size_t len;
-
-		/* This #include defines a local function!  */
-#  include <locale/weightwc.h>
-
-		table = (const int32_t *)
-		  _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEWC);
-		weights = (const wint_t *)
-		  _NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTWC);
-		extra = (const wint_t *)
-		  _NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAWC);
-		indirect = (const int32_t *)
-		  _NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTWC);
-
-		/* Write 1 collating element to str_buf, and
-		   get its index.  */
-		idx2 = 0;
-
-		for (i = 0 ; idx2 == 0 && i < WORK_BUFFER_SIZE - 1; i++)
-		  {
-		    cp = (wint_t*)str_buf;
-		    if (d == dend)
-		      {
-			if (dend == end_match_2)
-			  break;
-			d = string2;
-			dend = end_match_2;
-		      }
-		    str_buf[i] = TRANSLATE(*(d+i));
-		    str_buf[i+1] = '\0'; /* sentinel */
-		    idx2 = findidx ((const wint_t**)&cp);
-		  }
-
-		/* Update d, however d will be incremented at
-		   char_set_matched:, we decrement d here.  */
-		d = backup_d + ((wchar_t*)cp - (wchar_t*)str_buf - 1);
-		if (d >= dend)
-		  {
-		    if (dend == end_match_2)
-			d = dend;
-		    else
-		      {
-			d = string2;
-			dend = end_match_2;
-		      }
-		  }
-
-		len = weights[idx2];
-
-		for (workp2 = workp + equiv_class_length ; workp < workp2 ;
-		     workp++)
-		  {
-		    idx = (int32_t)*workp;
-		    /* We already checked idx != 0 in regex_compile. */
-
-		    if (idx2 != 0 && len == weights[idx])
-		      {
-			int cnt = 0;
-			while (cnt < len && (weights[idx + 1 + cnt]
-					     == weights[idx2 + 1 + cnt]))
-			  ++cnt;
-
-			if (cnt == len)
-			  goto char_set_matched;
-		      }
-		  }
-		/* not matched */
-                d = backup_d;
-                dend = backup_dend;
-	      }
-	    else /* (nrules == 0) */
-# endif
-	      /* If we can't look up collation data, we use wcscoll
-		 instead.  */
-	      {
-		for (workp2 = workp + equiv_class_length ; workp < workp2 ;)
-		  {
-		    const CHAR_T *backup_d = d, *backup_dend = dend;
-# ifdef _LIBC
-		    length = __wcslen (workp);
-# else
-		    length = wcslen (workp);
-# endif
-
-		    /* If wcscoll(the collating symbol, whole string) > 0,
-		       any substring of the string never match with the
-		       collating symbol.  */
-# ifdef _LIBC
-		    if (__wcscoll (workp, d) > 0)
-# else
-		    if (wcscoll (workp, d) > 0)
-# endif
-		      {
-			workp += length + 1;
-			break;
-		      }
-
-		    /* First, we compare the equivalence class with
-		       the first character of the string.
-		       If it don't match, we add the next character to
-		       the compare buffer in turn.  */
-		    for (i = 0 ; i < WORK_BUFFER_SIZE - 1 ; i++, d++)
-		      {
-			int match;
-			if (d == dend)
-			  {
-			    if (dend == end_match_2)
-			      break;
-			    d = string2;
-			    dend = end_match_2;
-			  }
-
-			/* add next character to the compare buffer.  */
-			str_buf[i] = TRANSLATE(*d);
-			str_buf[i+1] = '\0';
-
-# ifdef _LIBC
-			match = __wcscoll (workp, str_buf);
-# else
-			match = wcscoll (workp, str_buf);
-# endif
-
-			if (match == 0)
-			  goto char_set_matched;
-
-			if (match < 0)
-			/* (str_buf > workp) indicate (str_buf + X > workp),
-			   because for all X (str_buf + X > str_buf).
-			   So we don't need continue this loop.  */
-			  break;
-
-			/* Otherwise(str_buf < workp),
-			   (str_buf+next_character) may equals (workp).
-			   So we continue this loop.  */
-		      }
-		    /* not matched */
-		    d = backup_d;
-		    dend = backup_dend;
-		    workp += length + 1;
-		  }
-	      }
-
-            /* match with char_range?  */
-# ifdef _LIBC
-	    if (nrules != 0)
-	      {
-		uint32_t collseqval;
-		const char *collseq = (const char *)
-		  _NL_CURRENT(LC_COLLATE, _NL_COLLATE_COLLSEQWC);
-
-		collseqval = collseq_table_lookup (collseq, c);
-
-		for (; workp < p - chars_length ;)
-		  {
-		    uint32_t start_val, end_val;
-
-		    /* We already compute the collation sequence value
-		       of the characters (or collating symbols).  */
-		    start_val = (uint32_t) *workp++; /* range_start */
-		    end_val = (uint32_t) *workp++; /* range_end */
-
-		    if (start_val <= collseqval && collseqval <= end_val)
-		      goto char_set_matched;
-		  }
-	      }
-	    else
-# endif
-	      {
-		/* We set range_start_char at str_buf[0], range_end_char
-		   at str_buf[4], and compared char at str_buf[2].  */
-		str_buf[1] = 0;
-		str_buf[2] = c;
-		str_buf[3] = 0;
-		str_buf[5] = 0;
-		for (; workp < p - chars_length ;)
-		  {
-		    wchar_t *range_start_char, *range_end_char;
-
-		    /* match if (range_start_char <= c <= range_end_char).  */
-
-		    /* If range_start(or end) < 0, we assume -range_start(end)
-		       is the offset of the collating symbol which is specified
-		       as the character of the range start(end).  */
-
-		    /* range_start */
-		    if (*workp < 0)
-		      range_start_char = charset_top - (*workp++);
-		    else
-		      {
-			str_buf[0] = *workp++;
-			range_start_char = str_buf;
-		      }
-
-		    /* range_end */
-		    if (*workp < 0)
-		      range_end_char = charset_top - (*workp++);
-		    else
-		      {
-			str_buf[4] = *workp++;
-			range_end_char = str_buf + 4;
-		      }
-
-# ifdef _LIBC
-		    if (__wcscoll (range_start_char, str_buf+2) <= 0
-			&& __wcscoll (str_buf+2, range_end_char) <= 0)
-# else
-		    if (wcscoll (range_start_char, str_buf+2) <= 0
-			&& wcscoll (str_buf+2, range_end_char) <= 0)
-# endif
-		      goto char_set_matched;
-		  }
-	      }
-
-            /* match with char?  */
-	    for (; workp < p ; workp++)
-	      if (c == *workp)
-		goto char_set_matched;
-
-	    not = !not;
-
-	  char_set_matched:
-	    if (not) goto fail;
-#else
-            /* Cast to `unsigned' instead of `unsigned char' in case the
-               bit list is a full 32 bytes long.  */
-	    if (c < (unsigned) (*p * BYTEWIDTH)
-		&& p[1 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH)))
-	      not = !not;
-
-	    p += 1 + *p;
-
-	    if (!not) goto fail;
-#undef WORK_BUFFER_SIZE
-#endif /* WCHAR */
-	    SET_REGS_MATCHED ();
-            d++;
-	    break;
-	  }
-
-
-        /* The beginning of a group is represented by start_memory.
-           The arguments are the register number in the next byte, and the
-           number of groups inner to this one in the next.  The text
-           matched within the group is recorded (in the internal
-           registers data structure) under the register number.  */
-        case start_memory:
-	  DEBUG_PRINT3 ("EXECUTING start_memory %ld (%ld):\n",
-			(long int) *p, (long int) p[1]);
-
-          /* Find out if this group can match the empty string.  */
-	  p1 = p;		/* To send to group_match_null_string_p.  */
-
-          if (REG_MATCH_NULL_STRING_P (reg_info[*p]) == MATCH_NULL_UNSET_VALUE)
-            REG_MATCH_NULL_STRING_P (reg_info[*p])
-              = PREFIX(group_match_null_string_p) (&p1, pend, reg_info);
-
-          /* Save the position in the string where we were the last time
-             we were at this open-group operator in case the group is
-             operated upon by a repetition operator, e.g., with `(a*)*b'
-             against `ab'; then we want to ignore where we are now in
-             the string in case this attempt to match fails.  */
-          old_regstart[*p] = REG_MATCH_NULL_STRING_P (reg_info[*p])
-                             ? REG_UNSET (regstart[*p]) ? d : regstart[*p]
-                             : regstart[*p];
-	  DEBUG_PRINT2 ("  old_regstart: %d\n",
-			 POINTER_TO_OFFSET (old_regstart[*p]));
-
-          regstart[*p] = d;
-	  DEBUG_PRINT2 ("  regstart: %d\n", POINTER_TO_OFFSET (regstart[*p]));
-
-          IS_ACTIVE (reg_info[*p]) = 1;
-          MATCHED_SOMETHING (reg_info[*p]) = 0;
-
-	  /* Clear this whenever we change the register activity status.  */
-	  set_regs_matched_done = 0;
-
-          /* This is the new highest active register.  */
-          highest_active_reg = *p;
-
-          /* If nothing was active before, this is the new lowest active
-             register.  */
-          if (lowest_active_reg == NO_LOWEST_ACTIVE_REG)
-            lowest_active_reg = *p;
-
-          /* Move past the register number and inner group count.  */
-          p += 2;
-	  just_past_start_mem = p;
-
-          break;
-
-
-        /* The stop_memory opcode represents the end of a group.  Its
-           arguments are the same as start_memory's: the register
-           number, and the number of inner groups.  */
-	case stop_memory:
-	  DEBUG_PRINT3 ("EXECUTING stop_memory %ld (%ld):\n",
-			(long int) *p, (long int) p[1]);
-
-          /* We need to save the string position the last time we were at
-             this close-group operator in case the group is operated
-             upon by a repetition operator, e.g., with `((a*)*(b*)*)*'
-             against `aba'; then we want to ignore where we are now in
-             the string in case this attempt to match fails.  */
-          old_regend[*p] = REG_MATCH_NULL_STRING_P (reg_info[*p])
-                           ? REG_UNSET (regend[*p]) ? d : regend[*p]
-			   : regend[*p];
-	  DEBUG_PRINT2 ("      old_regend: %d\n",
-			 POINTER_TO_OFFSET (old_regend[*p]));
-
-          regend[*p] = d;
-	  DEBUG_PRINT2 ("      regend: %d\n", POINTER_TO_OFFSET (regend[*p]));
-
-          /* This register isn't active anymore.  */
-          IS_ACTIVE (reg_info[*p]) = 0;
-
-	  /* Clear this whenever we change the register activity status.  */
-	  set_regs_matched_done = 0;
-
-          /* If this was the only register active, nothing is active
-             anymore.  */
-          if (lowest_active_reg == highest_active_reg)
-            {
-              lowest_active_reg = NO_LOWEST_ACTIVE_REG;
-              highest_active_reg = NO_HIGHEST_ACTIVE_REG;
-            }
-          else
-            { /* We must scan for the new highest active register, since
-                 it isn't necessarily one less than now: consider
-                 (a(b)c(d(e)f)g).  When group 3 ends, after the f), the
-                 new highest active register is 1.  */
-              UCHAR_T r = *p - 1;
-              while (r > 0 && !IS_ACTIVE (reg_info[r]))
-                r--;
-
-              /* If we end up at register zero, that means that we saved
-                 the registers as the result of an `on_failure_jump', not
-                 a `start_memory', and we jumped to past the innermost
-                 `stop_memory'.  For example, in ((.)*) we save
-                 registers 1 and 2 as a result of the *, but when we pop
-                 back to the second ), we are at the stop_memory 1.
-                 Thus, nothing is active.  */
-	      if (r == 0)
-                {
-                  lowest_active_reg = NO_LOWEST_ACTIVE_REG;
-                  highest_active_reg = NO_HIGHEST_ACTIVE_REG;
-                }
-              else
-                highest_active_reg = r;
-            }
-
-          /* If just failed to match something this time around with a
-             group that's operated on by a repetition operator, try to
-             force exit from the ``loop'', and restore the register
-             information for this group that we had before trying this
-             last match.  */
-          if ((!MATCHED_SOMETHING (reg_info[*p])
-               || just_past_start_mem == p - 1)
-	      && (p + 2) < pend)
-            {
-              boolean is_a_jump_n = false;
-
-              p1 = p + 2;
-              mcnt = 0;
-              switch ((re_opcode_t) *p1++)
-                {
-                  case jump_n:
-		    is_a_jump_n = true;
-                  case pop_failure_jump:
-		  case maybe_pop_jump:
-		  case jump:
-		  case dummy_failure_jump:
-                    EXTRACT_NUMBER_AND_INCR (mcnt, p1);
-		    if (is_a_jump_n)
-		      p1 += OFFSET_ADDRESS_SIZE;
-                    break;
-
-                  default:
-                    /* do nothing */ ;
-                }
-	      p1 += mcnt;
-
-              /* If the next operation is a jump backwards in the pattern
-	         to an on_failure_jump right before the start_memory
-                 corresponding to this stop_memory, exit from the loop
-                 by forcing a failure after pushing on the stack the
-                 on_failure_jump's jump in the pattern, and d.  */
-              if (mcnt < 0 && (re_opcode_t) *p1 == on_failure_jump
-                  && (re_opcode_t) p1[1+OFFSET_ADDRESS_SIZE] == start_memory
-		  && p1[2+OFFSET_ADDRESS_SIZE] == *p)
-		{
-                  /* If this group ever matched anything, then restore
-                     what its registers were before trying this last
-                     failed match, e.g., with `(a*)*b' against `ab' for
-                     regstart[1], and, e.g., with `((a*)*(b*)*)*'
-                     against `aba' for regend[3].
-
-                     Also restore the registers for inner groups for,
-                     e.g., `((a*)(b*))*' against `aba' (register 3 would
-                     otherwise get trashed).  */
-
-                  if (EVER_MATCHED_SOMETHING (reg_info[*p]))
-		    {
-		      unsigned r;
-
-                      EVER_MATCHED_SOMETHING (reg_info[*p]) = 0;
-
-		      /* Restore this and inner groups' (if any) registers.  */
-                      for (r = *p; r < (unsigned) *p + (unsigned) *(p + 1);
-			   r++)
-                        {
-                          regstart[r] = old_regstart[r];
-
-                          /* xx why this test?  */
-                          if (old_regend[r] >= regstart[r])
-                            regend[r] = old_regend[r];
-                        }
-                    }
-		  p1++;
-                  EXTRACT_NUMBER_AND_INCR (mcnt, p1);
-                  PUSH_FAILURE_POINT (p1 + mcnt, d, -2);
-
-                  goto fail;
-                }
-            }
-
-          /* Move past the register number and the inner group count.  */
-          p += 2;
-          break;
-
-
-	/* \<digit> has been turned into a `duplicate' command which is
-           followed by the numeric value of <digit> as the register number.  */
-        case duplicate:
-	  {
-	    register const CHAR_T *d2, *dend2;
-	    int regno = *p++;   /* Get which register to match against.  */
-	    DEBUG_PRINT2 ("EXECUTING duplicate %d.\n", regno);
-
-	    /* Can't back reference a group which we've never matched.  */
-            if (REG_UNSET (regstart[regno]) || REG_UNSET (regend[regno]))
-              goto fail;
-
-            /* Where in input to try to start matching.  */
-            d2 = regstart[regno];
-
-            /* Where to stop matching; if both the place to start and
-               the place to stop matching are in the same string, then
-               set to the place to stop, otherwise, for now have to use
-               the end of the first string.  */
-
-            dend2 = ((FIRST_STRING_P (regstart[regno])
-		      == FIRST_STRING_P (regend[regno]))
-		     ? regend[regno] : end_match_1);
-	    for (;;)
-	      {
-		/* If necessary, advance to next segment in register
-                   contents.  */
-		while (d2 == dend2)
-		  {
-		    if (dend2 == end_match_2) break;
-		    if (dend2 == regend[regno]) break;
-
-                    /* End of string1 => advance to string2. */
-                    d2 = string2;
-                    dend2 = regend[regno];
-		  }
-		/* At end of register contents => success */
-		if (d2 == dend2) break;
-
-		/* If necessary, advance to next segment in data.  */
-		PREFETCH ();
-
-		/* How many characters left in this segment to match.  */
-		mcnt = dend - d;
-
-		/* Want how many consecutive characters we can match in
-                   one shot, so, if necessary, adjust the count.  */
-                if (mcnt > dend2 - d2)
-		  mcnt = dend2 - d2;
-
-		/* Compare that many; failure if mismatch, else move
-                   past them.  */
-		if (translate
-                    ? PREFIX(bcmp_translate) (d, d2, mcnt, translate)
-                    : memcmp (d, d2, mcnt*sizeof(UCHAR_T)))
-		  goto fail;
-		d += mcnt, d2 += mcnt;
-
-		/* Do this because we've match some characters.  */
-		SET_REGS_MATCHED ();
-	      }
-	  }
-	  break;
-
-
-        /* begline matches the empty string at the beginning of the string
-           (unless `not_bol' is set in `bufp'), and, if
-           `newline_anchor' is set, after newlines.  */
-	case begline:
-          DEBUG_PRINT1 ("EXECUTING begline.\n");
-
-          if (AT_STRINGS_BEG (d))
-            {
-              if (!bufp->not_bol) break;
-            }
-          else if (d[-1] == '\n' && bufp->newline_anchor)
-            {
-              break;
-            }
-          /* In all other cases, we fail.  */
-          goto fail;
-
-
-        /* endline is the dual of begline.  */
-	case endline:
-          DEBUG_PRINT1 ("EXECUTING endline.\n");
-
-          if (AT_STRINGS_END (d))
-            {
-              if (!bufp->not_eol) break;
-            }
-
-          /* We have to ``prefetch'' the next character.  */
-          else if ((d == end1 ? *string2 : *d) == '\n'
-                   && bufp->newline_anchor)
-            {
-              break;
-            }
-          goto fail;
-
-
-	/* Match at the very beginning of the data.  */
-        case begbuf:
-          DEBUG_PRINT1 ("EXECUTING begbuf.\n");
-          if (AT_STRINGS_BEG (d))
-            break;
-          goto fail;
-
-
-	/* Match at the very end of the data.  */
-        case endbuf:
-          DEBUG_PRINT1 ("EXECUTING endbuf.\n");
-	  if (AT_STRINGS_END (d))
-	    break;
-          goto fail;
-
-
-        /* on_failure_keep_string_jump is used to optimize `.*\n'.  It
-           pushes NULL as the value for the string on the stack.  Then
-           `pop_failure_point' will keep the current value for the
-           string, instead of restoring it.  To see why, consider
-           matching `foo\nbar' against `.*\n'.  The .* matches the foo;
-           then the . fails against the \n.  But the next thing we want
-           to do is match the \n against the \n; if we restored the
-           string value, we would be back at the foo.
-
-           Because this is used only in specific cases, we don't need to
-           check all the things that `on_failure_jump' does, to make
-           sure the right things get saved on the stack.  Hence we don't
-           share its code.  The only reason to push anything on the
-           stack at all is that otherwise we would have to change
-           `anychar's code to do something besides goto fail in this
-           case; that seems worse than this.  */
-        case on_failure_keep_string_jump:
-          DEBUG_PRINT1 ("EXECUTING on_failure_keep_string_jump");
-
-          EXTRACT_NUMBER_AND_INCR (mcnt, p);
-#ifdef _LIBC
-          DEBUG_PRINT3 (" %d (to %p):\n", mcnt, p + mcnt);
-#else
-          DEBUG_PRINT3 (" %d (to 0x%x):\n", mcnt, p + mcnt);
-#endif
-
-          PUSH_FAILURE_POINT (p + mcnt, NULL, -2);
-          break;
-
-
-	/* Uses of on_failure_jump:
-
-           Each alternative starts with an on_failure_jump that points
-           to the beginning of the next alternative.  Each alternative
-           except the last ends with a jump that in effect jumps past
-           the rest of the alternatives.  (They really jump to the
-           ending jump of the following alternative, because tensioning
-           these jumps is a hassle.)
-
-           Repeats start with an on_failure_jump that points past both
-           the repetition text and either the following jump or
-           pop_failure_jump back to this on_failure_jump.  */
-	case on_failure_jump:
-        on_failure:
-          DEBUG_PRINT1 ("EXECUTING on_failure_jump");
-
-          EXTRACT_NUMBER_AND_INCR (mcnt, p);
-#ifdef _LIBC
-          DEBUG_PRINT3 (" %d (to %p)", mcnt, p + mcnt);
-#else
-          DEBUG_PRINT3 (" %d (to 0x%x)", mcnt, p + mcnt);
-#endif
-
-          /* If this on_failure_jump comes right before a group (i.e.,
-             the original * applied to a group), save the information
-             for that group and all inner ones, so that if we fail back
-             to this point, the group's information will be correct.
-             For example, in \(a*\)*\1, we need the preceding group,
-             and in \(zz\(a*\)b*\)\2, we need the inner group.  */
-
-          /* We can't use `p' to check ahead because we push
-             a failure point to `p + mcnt' after we do this.  */
-          p1 = p;
-
-          /* We need to skip no_op's before we look for the
-             start_memory in case this on_failure_jump is happening as
-             the result of a completed succeed_n, as in \(a\)\{1,3\}b\1
-             against aba.  */
-          while (p1 < pend && (re_opcode_t) *p1 == no_op)
-            p1++;
-
-          if (p1 < pend && (re_opcode_t) *p1 == start_memory)
-            {
-              /* We have a new highest active register now.  This will
-                 get reset at the start_memory we are about to get to,
-                 but we will have saved all the registers relevant to
-                 this repetition op, as described above.  */
-              highest_active_reg = *(p1 + 1) + *(p1 + 2);
-              if (lowest_active_reg == NO_LOWEST_ACTIVE_REG)
-                lowest_active_reg = *(p1 + 1);
-            }
-
-          DEBUG_PRINT1 (":\n");
-          PUSH_FAILURE_POINT (p + mcnt, d, -2);
-          break;
-
-
-        /* A smart repeat ends with `maybe_pop_jump'.
-	   We change it to either `pop_failure_jump' or `jump'.  */
-        case maybe_pop_jump:
-          EXTRACT_NUMBER_AND_INCR (mcnt, p);
-          DEBUG_PRINT2 ("EXECUTING maybe_pop_jump %d.\n", mcnt);
-          {
-	    register UCHAR_T *p2 = p;
-
-            /* Compare the beginning of the repeat with what in the
-               pattern follows its end. If we can establish that there
-               is nothing that they would both match, i.e., that we
-               would have to backtrack because of (as in, e.g., `a*a')
-               then we can change to pop_failure_jump, because we'll
-               never have to backtrack.
-
-               This is not true in the case of alternatives: in
-               `(a|ab)*' we do need to backtrack to the `ab' alternative
-               (e.g., if the string was `ab').  But instead of trying to
-               detect that here, the alternative has put on a dummy
-               failure point which is what we will end up popping.  */
-
-	    /* Skip over open/close-group commands.
-	       If what follows this loop is a ...+ construct,
-	       look at what begins its body, since we will have to
-	       match at least one of that.  */
-	    while (1)
-	      {
-		if (p2 + 2 < pend
-		    && ((re_opcode_t) *p2 == stop_memory
-			|| (re_opcode_t) *p2 == start_memory))
-		  p2 += 3;
-		else if (p2 + 2 + 2 * OFFSET_ADDRESS_SIZE < pend
-			 && (re_opcode_t) *p2 == dummy_failure_jump)
-		  p2 += 2 + 2 * OFFSET_ADDRESS_SIZE;
-		else
-		  break;
-	      }
-
-	    p1 = p + mcnt;
-	    /* p1[0] ... p1[2] are the `on_failure_jump' corresponding
-	       to the `maybe_finalize_jump' of this case.  Examine what
-	       follows.  */
-
-            /* If we're at the end of the pattern, we can change.  */
-            if (p2 == pend)
-	      {
-		/* Consider what happens when matching ":\(.*\)"
-		   against ":/".  I don't really understand this code
-		   yet.  */
-  	        p[-(1+OFFSET_ADDRESS_SIZE)] = (UCHAR_T)
-		  pop_failure_jump;
-                DEBUG_PRINT1
-                  ("  End of pattern: change to `pop_failure_jump'.\n");
-              }
-
-            else if ((re_opcode_t) *p2 == exactn
-#ifdef MBS_SUPPORT
-		     || (re_opcode_t) *p2 == exactn_bin
-#endif
-		     || (bufp->newline_anchor && (re_opcode_t) *p2 == endline))
-	      {
-		register UCHAR_T c
-                  = *p2 == (UCHAR_T) endline ? '\n' : p2[2];
-
-                if (((re_opcode_t) p1[1+OFFSET_ADDRESS_SIZE] == exactn
-#ifdef MBS_SUPPORT
-		     || (re_opcode_t) p1[1+OFFSET_ADDRESS_SIZE] == exactn_bin
-#endif
-		    ) && p1[3+OFFSET_ADDRESS_SIZE] != c)
-                  {
-  		    p[-(1+OFFSET_ADDRESS_SIZE)] = (UCHAR_T)
-		      pop_failure_jump;
-#ifdef WCHAR
-		      DEBUG_PRINT3 ("  %C != %C => pop_failure_jump.\n",
-				    (wint_t) c,
-				    (wint_t) p1[3+OFFSET_ADDRESS_SIZE]);
-#else
-		      DEBUG_PRINT3 ("  %c != %c => pop_failure_jump.\n",
-				    (char) c,
-				    (char) p1[3+OFFSET_ADDRESS_SIZE]);
-#endif
-                  }
-
-#ifndef WCHAR
-		else if ((re_opcode_t) p1[3] == charset
-			 || (re_opcode_t) p1[3] == charset_not)
-		  {
-		    int not = (re_opcode_t) p1[3] == charset_not;
-
-		    if (c < (unsigned) (p1[4] * BYTEWIDTH)
-			&& p1[5 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH)))
-		      not = !not;
-
-                    /* `not' is equal to 1 if c would match, which means
-                        that we can't change to pop_failure_jump.  */
-		    if (!not)
-                      {
-  		        p[-3] = (unsigned char) pop_failure_jump;
-                        DEBUG_PRINT1 ("  No match => pop_failure_jump.\n");
-                      }
-		  }
-#endif /* not WCHAR */
-	      }
-#ifndef WCHAR
-            else if ((re_opcode_t) *p2 == charset)
-	      {
-		/* We win if the first character of the loop is not part
-                   of the charset.  */
-                if ((re_opcode_t) p1[3] == exactn
- 		    && ! ((int) p2[1] * BYTEWIDTH > (int) p1[5]
- 			  && (p2[2 + p1[5] / BYTEWIDTH]
- 			      & (1 << (p1[5] % BYTEWIDTH)))))
-		  {
-		    p[-3] = (unsigned char) pop_failure_jump;
-		    DEBUG_PRINT1 ("  No match => pop_failure_jump.\n");
-                  }
-
-		else if ((re_opcode_t) p1[3] == charset_not)
-		  {
-		    int idx;
-		    /* We win if the charset_not inside the loop
-		       lists every character listed in the charset after.  */
-		    for (idx = 0; idx < (int) p2[1]; idx++)
-		      if (! (p2[2 + idx] == 0
-			     || (idx < (int) p1[4]
-				 && ((p2[2 + idx] & ~ p1[5 + idx]) == 0))))
-			break;
-
-		    if (idx == p2[1])
-                      {
-  		        p[-3] = (unsigned char) pop_failure_jump;
-                        DEBUG_PRINT1 ("  No match => pop_failure_jump.\n");
-                      }
-		  }
-		else if ((re_opcode_t) p1[3] == charset)
-		  {
-		    int idx;
-		    /* We win if the charset inside the loop
-		       has no overlap with the one after the loop.  */
-		    for (idx = 0;
-			 idx < (int) p2[1] && idx < (int) p1[4];
-			 idx++)
-		      if ((p2[2 + idx] & p1[5 + idx]) != 0)
-			break;
-
-		    if (idx == p2[1] || idx == p1[4])
-                      {
-  		        p[-3] = (unsigned char) pop_failure_jump;
-                        DEBUG_PRINT1 ("  No match => pop_failure_jump.\n");
-                      }
-		  }
-	      }
-#endif /* not WCHAR */
-	  }
-	  p -= OFFSET_ADDRESS_SIZE;	/* Point at relative address again.  */
-	  if ((re_opcode_t) p[-1] != pop_failure_jump)
-	    {
-	      p[-1] = (UCHAR_T) jump;
-              DEBUG_PRINT1 ("  Match => jump.\n");
-	      goto unconditional_jump;
-	    }
-        /* Note fall through.  */
-
-
-	/* The end of a simple repeat has a pop_failure_jump back to
-           its matching on_failure_jump, where the latter will push a
-           failure point.  The pop_failure_jump takes off failure
-           points put on by this pop_failure_jump's matching
-           on_failure_jump; we got through the pattern to here from the
-           matching on_failure_jump, so didn't fail.  */
-        case pop_failure_jump:
-          {
-            /* We need to pass separate storage for the lowest and
-               highest registers, even though we don't care about the
-               actual values.  Otherwise, we will restore only one
-               register from the stack, since lowest will == highest in
-               `pop_failure_point'.  */
-            active_reg_t dummy_low_reg, dummy_high_reg;
-            UCHAR_T *pdummy = NULL;
-            const CHAR_T *sdummy = NULL;
-
-            DEBUG_PRINT1 ("EXECUTING pop_failure_jump.\n");
-            POP_FAILURE_POINT (sdummy, pdummy,
-                               dummy_low_reg, dummy_high_reg,
-                               reg_dummy, reg_dummy, reg_info_dummy);
-
-            /* Silence 'set but not used' warnings.  */
-            (void) pdummy;
-            (void) sdummy;
-          }
-	  /* Note fall through.  */
-
-	unconditional_jump:
-#ifdef _LIBC
-	  DEBUG_PRINT2 ("\n%p: ", p);
-#else
-	  DEBUG_PRINT2 ("\n0x%x: ", p);
-#endif
-          /* Note fall through.  */
-
-        /* Unconditionally jump (without popping any failure points).  */
-        case jump:
-	  EXTRACT_NUMBER_AND_INCR (mcnt, p);	/* Get the amount to jump.  */
-          DEBUG_PRINT2 ("EXECUTING jump %d ", mcnt);
-	  p += mcnt;				/* Do the jump.  */
-#ifdef _LIBC
-          DEBUG_PRINT2 ("(to %p).\n", p);
-#else
-          DEBUG_PRINT2 ("(to 0x%x).\n", p);
-#endif
-	  break;
-
-
-        /* We need this opcode so we can detect where alternatives end
-           in `group_match_null_string_p' et al.  */
-        case jump_past_alt:
-          DEBUG_PRINT1 ("EXECUTING jump_past_alt.\n");
-          goto unconditional_jump;
-
-
-        /* Normally, the on_failure_jump pushes a failure point, which
-           then gets popped at pop_failure_jump.  We will end up at
-           pop_failure_jump, also, and with a pattern of, say, `a+', we
-           are skipping over the on_failure_jump, so we have to push
-           something meaningless for pop_failure_jump to pop.  */
-        case dummy_failure_jump:
-          DEBUG_PRINT1 ("EXECUTING dummy_failure_jump.\n");
-          /* It doesn't matter what we push for the string here.  What
-             the code at `fail' tests is the value for the pattern.  */
-          PUSH_FAILURE_POINT (NULL, NULL, -2);
-          goto unconditional_jump;
-
-
-        /* At the end of an alternative, we need to push a dummy failure
-           point in case we are followed by a `pop_failure_jump', because
-           we don't want the failure point for the alternative to be
-           popped.  For example, matching `(a|ab)*' against `aab'
-           requires that we match the `ab' alternative.  */
-        case push_dummy_failure:
-          DEBUG_PRINT1 ("EXECUTING push_dummy_failure.\n");
-          /* See comments just above at `dummy_failure_jump' about the
-             two zeroes.  */
-          PUSH_FAILURE_POINT (NULL, NULL, -2);
-          break;
-
-        /* Have to succeed matching what follows at least n times.
-           After that, handle like `on_failure_jump'.  */
-        case succeed_n:
-          EXTRACT_NUMBER (mcnt, p + OFFSET_ADDRESS_SIZE);
-          DEBUG_PRINT2 ("EXECUTING succeed_n %d.\n", mcnt);
-
-          assert (mcnt >= 0);
-          /* Originally, this is how many times we HAVE to succeed.  */
-          if (mcnt > 0)
-            {
-               mcnt--;
-	       p += OFFSET_ADDRESS_SIZE;
-               STORE_NUMBER_AND_INCR (p, mcnt);
-#ifdef _LIBC
-               DEBUG_PRINT3 ("  Setting %p to %d.\n", p - OFFSET_ADDRESS_SIZE
-			     , mcnt);
-#else
-               DEBUG_PRINT3 ("  Setting 0x%x to %d.\n", p - OFFSET_ADDRESS_SIZE
-			     , mcnt);
-#endif
-            }
-	  else if (mcnt == 0)
-            {
-#ifdef _LIBC
-              DEBUG_PRINT2 ("  Setting two bytes from %p to no_op.\n",
-			    p + OFFSET_ADDRESS_SIZE);
-#else
-              DEBUG_PRINT2 ("  Setting two bytes from 0x%x to no_op.\n",
-			    p + OFFSET_ADDRESS_SIZE);
-#endif /* _LIBC */
-
-#ifdef WCHAR
-	      p[1] = (UCHAR_T) no_op;
-#else
-	      p[2] = (UCHAR_T) no_op;
-              p[3] = (UCHAR_T) no_op;
-#endif /* WCHAR */
-              goto on_failure;
-            }
-          break;
-
-        case jump_n:
-          EXTRACT_NUMBER (mcnt, p + OFFSET_ADDRESS_SIZE);
-          DEBUG_PRINT2 ("EXECUTING jump_n %d.\n", mcnt);
-
-          /* Originally, this is how many times we CAN jump.  */
-          if (mcnt)
-            {
-               mcnt--;
-               STORE_NUMBER (p + OFFSET_ADDRESS_SIZE, mcnt);
-
-#ifdef _LIBC
-               DEBUG_PRINT3 ("  Setting %p to %d.\n", p + OFFSET_ADDRESS_SIZE,
-			     mcnt);
-#else
-               DEBUG_PRINT3 ("  Setting 0x%x to %d.\n", p + OFFSET_ADDRESS_SIZE,
-			     mcnt);
-#endif /* _LIBC */
-	       goto unconditional_jump;
-            }
-          /* If don't have to jump any more, skip over the rest of command.  */
-	  else
-	    p += 2 * OFFSET_ADDRESS_SIZE;
-          break;
-
-	case set_number_at:
-	  {
-            DEBUG_PRINT1 ("EXECUTING set_number_at.\n");
-
-            EXTRACT_NUMBER_AND_INCR (mcnt, p);
-            p1 = p + mcnt;
-            EXTRACT_NUMBER_AND_INCR (mcnt, p);
-#ifdef _LIBC
-            DEBUG_PRINT3 ("  Setting %p to %d.\n", p1, mcnt);
-#else
-            DEBUG_PRINT3 ("  Setting 0x%x to %d.\n", p1, mcnt);
-#endif
-	    STORE_NUMBER (p1, mcnt);
-            break;
-          }
-
-#if 0
-	/* The DEC Alpha C compiler 3.x generates incorrect code for the
-	   test  WORDCHAR_P (d - 1) != WORDCHAR_P (d)  in the expansion of
-	   AT_WORD_BOUNDARY, so this code is disabled.  Expanding the
-	   macro and introducing temporary variables works around the bug.  */
-
-	case wordbound:
-	  DEBUG_PRINT1 ("EXECUTING wordbound.\n");
-	  if (AT_WORD_BOUNDARY (d))
-	    break;
-	  goto fail;
-
-	case notwordbound:
-	  DEBUG_PRINT1 ("EXECUTING notwordbound.\n");
-	  if (AT_WORD_BOUNDARY (d))
-	    goto fail;
-	  break;
-#else
-	case wordbound:
-	{
-	  boolean prevchar, thischar;
-
-	  DEBUG_PRINT1 ("EXECUTING wordbound.\n");
-	  if (AT_STRINGS_BEG (d) || AT_STRINGS_END (d))
-	    break;
-
-	  prevchar = WORDCHAR_P (d - 1);
-	  thischar = WORDCHAR_P (d);
-	  if (prevchar != thischar)
-	    break;
-	  goto fail;
-	}
-
-      case notwordbound:
-	{
-	  boolean prevchar, thischar;
-
-	  DEBUG_PRINT1 ("EXECUTING notwordbound.\n");
-	  if (AT_STRINGS_BEG (d) || AT_STRINGS_END (d))
-	    goto fail;
-
-	  prevchar = WORDCHAR_P (d - 1);
-	  thischar = WORDCHAR_P (d);
-	  if (prevchar != thischar)
-	    goto fail;
-	  break;
-	}
-#endif
-
-	case wordbeg:
-          DEBUG_PRINT1 ("EXECUTING wordbeg.\n");
-	  if (!AT_STRINGS_END (d) && WORDCHAR_P (d)
-	      && (AT_STRINGS_BEG (d) || !WORDCHAR_P (d - 1)))
-	    break;
-          goto fail;
-
-	case wordend:
-          DEBUG_PRINT1 ("EXECUTING wordend.\n");
-	  if (!AT_STRINGS_BEG (d) && WORDCHAR_P (d - 1)
-              && (AT_STRINGS_END (d) || !WORDCHAR_P (d)))
-	    break;
-          goto fail;
-
-#ifdef emacs
-  	case before_dot:
-          DEBUG_PRINT1 ("EXECUTING before_dot.\n");
- 	  if (PTR_CHAR_POS ((unsigned char *) d) >= point)
-  	    goto fail;
-  	  break;
-
-  	case at_dot:
-          DEBUG_PRINT1 ("EXECUTING at_dot.\n");
- 	  if (PTR_CHAR_POS ((unsigned char *) d) != point)
-  	    goto fail;
-  	  break;
-
-  	case after_dot:
-          DEBUG_PRINT1 ("EXECUTING after_dot.\n");
-          if (PTR_CHAR_POS ((unsigned char *) d) <= point)
-  	    goto fail;
-  	  break;
-
-	case syntaxspec:
-          DEBUG_PRINT2 ("EXECUTING syntaxspec %d.\n", mcnt);
-	  mcnt = *p++;
-	  goto matchsyntax;
-
-        case wordchar:
-          DEBUG_PRINT1 ("EXECUTING Emacs wordchar.\n");
-	  mcnt = (int) Sword;
-        matchsyntax:
-	  PREFETCH ();
-	  /* Can't use *d++ here; SYNTAX may be an unsafe macro.  */
-	  d++;
-	  if (SYNTAX (d[-1]) != (enum syntaxcode) mcnt)
-	    goto fail;
-          SET_REGS_MATCHED ();
-	  break;
-
-	case notsyntaxspec:
-          DEBUG_PRINT2 ("EXECUTING notsyntaxspec %d.\n", mcnt);
-	  mcnt = *p++;
-	  goto matchnotsyntax;
-
-        case notwordchar:
-          DEBUG_PRINT1 ("EXECUTING Emacs notwordchar.\n");
-	  mcnt = (int) Sword;
-        matchnotsyntax:
-	  PREFETCH ();
-	  /* Can't use *d++ here; SYNTAX may be an unsafe macro.  */
-	  d++;
-	  if (SYNTAX (d[-1]) == (enum syntaxcode) mcnt)
-	    goto fail;
-	  SET_REGS_MATCHED ();
-          break;
-
-#else /* not emacs */
-	case wordchar:
-          DEBUG_PRINT1 ("EXECUTING non-Emacs wordchar.\n");
-	  PREFETCH ();
-          if (!WORDCHAR_P (d))
-            goto fail;
-	  SET_REGS_MATCHED ();
-          d++;
-	  break;
-
-	case notwordchar:
-          DEBUG_PRINT1 ("EXECUTING non-Emacs notwordchar.\n");
-	  PREFETCH ();
-	  if (WORDCHAR_P (d))
-            goto fail;
-          SET_REGS_MATCHED ();
-          d++;
-	  break;
-#endif /* not emacs */
-
-        default:
-          abort ();
-	}
-      continue;  /* Successfully executed one pattern command; keep going.  */
-
-
-    /* We goto here if a matching operation fails. */
-    fail:
-      if (!FAIL_STACK_EMPTY ())
-	{ /* A restart point is known.  Restore to that state.  */
-          DEBUG_PRINT1 ("\nFAIL:\n");
-          POP_FAILURE_POINT (d, p,
-                             lowest_active_reg, highest_active_reg,
-                             regstart, regend, reg_info);
-
-          /* If this failure point is a dummy, try the next one.  */
-          if (!p)
-	    goto fail;
-
-          /* If we failed to the end of the pattern, don't examine *p.  */
-	  assert (p <= pend);
-          if (p < pend)
-            {
-              boolean is_a_jump_n = false;
-
-              /* If failed to a backwards jump that's part of a repetition
-                 loop, need to pop this failure point and use the next one.  */
-              switch ((re_opcode_t) *p)
-                {
-                case jump_n:
-                  is_a_jump_n = true;
-                case maybe_pop_jump:
-                case pop_failure_jump:
-                case jump:
-                  p1 = p + 1;
-                  EXTRACT_NUMBER_AND_INCR (mcnt, p1);
-                  p1 += mcnt;
-
-                  if ((is_a_jump_n && (re_opcode_t) *p1 == succeed_n)
-                      || (!is_a_jump_n
-                          && (re_opcode_t) *p1 == on_failure_jump))
-                    goto fail;
-                  break;
-                default:
-                  /* do nothing */ ;
-                }
-            }
-
-          if (d >= string1 && d <= end1)
-	    dend = end_match_1;
-        }
-      else
-        break;   /* Matching at this starting point really fails.  */
-    } /* for (;;) */
-
-  if (best_regs_set)
-    goto restore_best_regs;
-
-  FREE_VARIABLES ();
-
-  return -1;         			/* Failure to match.  */
-} /* re_match_2 */
-
-/* Subroutine definitions for re_match_2.  */
-
-
-/* We are passed P pointing to a register number after a start_memory.
-
-   Return true if the pattern up to the corresponding stop_memory can
-   match the empty string, and false otherwise.
-
-   If we find the matching stop_memory, sets P to point to one past its number.
-   Otherwise, sets P to an undefined byte less than or equal to END.
-
-   We don't handle duplicates properly (yet).  */
-
-static boolean
-PREFIX(group_match_null_string_p) (
-    UCHAR_T **p, UCHAR_T *end,
-    PREFIX(register_info_type) *reg_info)
-{
-  int mcnt;
-  /* Point to after the args to the start_memory.  */
-  UCHAR_T *p1 = *p + 2;
-
-  while (p1 < end)
-    {
-      /* Skip over opcodes that can match nothing, and return true or
-	 false, as appropriate, when we get to one that can't, or to the
-         matching stop_memory.  */
-
-      switch ((re_opcode_t) *p1)
-        {
-        /* Could be either a loop or a series of alternatives.  */
-        case on_failure_jump:
-          p1++;
-          EXTRACT_NUMBER_AND_INCR (mcnt, p1);
-
-          /* If the next operation is not a jump backwards in the
-	     pattern.  */
-
-	  if (mcnt >= 0)
-	    {
-              /* Go through the on_failure_jumps of the alternatives,
-                 seeing if any of the alternatives cannot match nothing.
-                 The last alternative starts with only a jump,
-                 whereas the rest start with on_failure_jump and end
-                 with a jump, e.g., here is the pattern for `a|b|c':
-
-                 /on_failure_jump/0/6/exactn/1/a/jump_past_alt/0/6
-                 /on_failure_jump/0/6/exactn/1/b/jump_past_alt/0/3
-                 /exactn/1/c
-
-                 So, we have to first go through the first (n-1)
-                 alternatives and then deal with the last one separately.  */
-
-
-              /* Deal with the first (n-1) alternatives, which start
-                 with an on_failure_jump (see above) that jumps to right
-                 past a jump_past_alt.  */
-
-              while ((re_opcode_t) p1[mcnt-(1+OFFSET_ADDRESS_SIZE)] ==
-		     jump_past_alt)
-                {
-                  /* `mcnt' holds how many bytes long the alternative
-                     is, including the ending `jump_past_alt' and
-                     its number.  */
-
-                  if (!PREFIX(alt_match_null_string_p) (p1, p1 + mcnt -
-						(1 + OFFSET_ADDRESS_SIZE),
-						reg_info))
-                    return false;
-
-                  /* Move to right after this alternative, including the
-		     jump_past_alt.  */
-                  p1 += mcnt;
-
-                  /* Break if it's the beginning of an n-th alternative
-                     that doesn't begin with an on_failure_jump.  */
-                  if ((re_opcode_t) *p1 != on_failure_jump)
-                    break;
-
-		  /* Still have to check that it's not an n-th
-		     alternative that starts with an on_failure_jump.  */
-		  p1++;
-                  EXTRACT_NUMBER_AND_INCR (mcnt, p1);
-                  if ((re_opcode_t) p1[mcnt-(1+OFFSET_ADDRESS_SIZE)] !=
-		      jump_past_alt)
-                    {
-		      /* Get to the beginning of the n-th alternative.  */
-                      p1 -= 1 + OFFSET_ADDRESS_SIZE;
-                      break;
-                    }
-                }
-
-              /* Deal with the last alternative: go back and get number
-                 of the `jump_past_alt' just before it.  `mcnt' contains
-                 the length of the alternative.  */
-              EXTRACT_NUMBER (mcnt, p1 - OFFSET_ADDRESS_SIZE);
-
-              if (!PREFIX(alt_match_null_string_p) (p1, p1 + mcnt, reg_info))
-                return false;
-
-              p1 += mcnt;	/* Get past the n-th alternative.  */
-            } /* if mcnt > 0 */
-          break;
-
-
-        case stop_memory:
-	  assert (p1[1] == **p);
-          *p = p1 + 2;
-          return true;
-
-
-        default:
-          if (!PREFIX(common_op_match_null_string_p) (&p1, end, reg_info))
-            return false;
-        }
-    } /* while p1 < end */
-
-  return false;
-} /* group_match_null_string_p */
-
-
-/* Similar to group_match_null_string_p, but doesn't deal with alternatives:
-   It expects P to be the first byte of a single alternative and END one
-   byte past the last. The alternative can contain groups.  */
-
-static boolean
-PREFIX(alt_match_null_string_p) (
-    UCHAR_T *p, UCHAR_T *end,
-    PREFIX(register_info_type) *reg_info)
-{
-  int mcnt;
-  UCHAR_T *p1 = p;
-
-  while (p1 < end)
-    {
-      /* Skip over opcodes that can match nothing, and break when we get
-         to one that can't.  */
-
-      switch ((re_opcode_t) *p1)
-        {
-	/* It's a loop.  */
-        case on_failure_jump:
-          p1++;
-          EXTRACT_NUMBER_AND_INCR (mcnt, p1);
-          p1 += mcnt;
-          break;
-
-	default:
-          if (!PREFIX(common_op_match_null_string_p) (&p1, end, reg_info))
-            return false;
-        }
-    }  /* while p1 < end */
-
-  return true;
-} /* alt_match_null_string_p */
-
-
-/* Deals with the ops common to group_match_null_string_p and
-   alt_match_null_string_p.
-
-   Sets P to one after the op and its arguments, if any.  */
-
-static boolean
-PREFIX(common_op_match_null_string_p) (
-    UCHAR_T **p, UCHAR_T *end,
-    PREFIX(register_info_type) *reg_info)
-{
-  int mcnt;
-  boolean ret;
-  int reg_no;
-  UCHAR_T *p1 = *p;
-
-  switch ((re_opcode_t) *p1++)
-    {
-    case no_op:
-    case begline:
-    case endline:
-    case begbuf:
-    case endbuf:
-    case wordbeg:
-    case wordend:
-    case wordbound:
-    case notwordbound:
-#ifdef emacs
-    case before_dot:
-    case at_dot:
-    case after_dot:
-#endif
-      break;
-
-    case start_memory:
-      reg_no = *p1;
-      assert (reg_no > 0 && reg_no <= MAX_REGNUM);
-      ret = PREFIX(group_match_null_string_p) (&p1, end, reg_info);
-
-      /* Have to set this here in case we're checking a group which
-         contains a group and a back reference to it.  */
-
-      if (REG_MATCH_NULL_STRING_P (reg_info[reg_no]) == MATCH_NULL_UNSET_VALUE)
-        REG_MATCH_NULL_STRING_P (reg_info[reg_no]) = ret;
-
-      if (!ret)
-        return false;
-      break;
-
-    /* If this is an optimized succeed_n for zero times, make the jump.  */
-    case jump:
-      EXTRACT_NUMBER_AND_INCR (mcnt, p1);
-      if (mcnt >= 0)
-        p1 += mcnt;
-      else
-        return false;
-      break;
-
-    case succeed_n:
-      /* Get to the number of times to succeed.  */
-      p1 += OFFSET_ADDRESS_SIZE;
-      EXTRACT_NUMBER_AND_INCR (mcnt, p1);
-
-      if (mcnt == 0)
-        {
-          p1 -= 2 * OFFSET_ADDRESS_SIZE;
-          EXTRACT_NUMBER_AND_INCR (mcnt, p1);
-          p1 += mcnt;
-        }
-      else
-        return false;
-      break;
-
-    case duplicate:
-      if (!REG_MATCH_NULL_STRING_P (reg_info[*p1]))
-        return false;
-      break;
-
-    case set_number_at:
-      p1 += 2 * OFFSET_ADDRESS_SIZE;
-
-    default:
-      /* All other opcodes mean we cannot match the empty string.  */
-      return false;
-  }
-
-  *p = p1;
-  return true;
-} /* common_op_match_null_string_p */
-
-
-/* Return zero if TRANSLATE[S1] and TRANSLATE[S2] are identical for LEN
-   bytes; nonzero otherwise.  */
-
-static int
-PREFIX(bcmp_translate) (
-     const CHAR_T *s1, const CHAR_T *s2,
-     register int len,
-     __RE_TRANSLATE_TYPE translate)
-{
-  register const UCHAR_T *p1 = (const UCHAR_T *) s1;
-  register const UCHAR_T *p2 = (const UCHAR_T *) s2;
-  while (len)
-    {
-#ifdef WCHAR
-      if (((*p1<=0xff)?translate[*p1++]:*p1++)
-	  != ((*p2<=0xff)?translate[*p2++]:*p2++))
-	return 1;
-#else /* BYTE */
-      if (translate[*p1++] != translate[*p2++]) return 1;
-#endif /* WCHAR */
-      len--;
-    }
-  return 0;
-}
-
-
-#else /* not INSIDE_RECURSION */
-
-/* Entry points for GNU code.  */
-
-/* re_compile_pattern is the GNU regular expression compiler: it
-   compiles PATTERN (of length SIZE) and puts the result in BUFP.
-   Returns 0 if the pattern was valid, otherwise an error string.
-
-   Assumes the `allocated' (and perhaps `buffer') and `translate' fields
-   are set in BUFP on entry.
-
-   We call regex_compile to do the actual compilation.  */
-
-const char *
-re_compile_pattern (const char *pattern,
-		size_t length,
-		struct re_pattern_buffer *bufp)
-{
-  reg_errcode_t ret;
-
-  /* GNU code is written to assume at least RE_NREGS registers will be set
-     (and at least one extra will be -1).  */
-  bufp->regs_allocated = REGS_UNALLOCATED;
-
-  /* And GNU code determines whether or not to get register information
-     by passing null for the REGS argument to re_match, etc., not by
-     setting no_sub.  */
-  bufp->no_sub = 0;
-
-  /* Match anchors at newline.  */
-  bufp->newline_anchor = 1;
-
-# ifdef MBS_SUPPORT
-  if (MB_CUR_MAX != 1)
-    ret = wcs_regex_compile (pattern, length, re_syntax_options, bufp);
-  else
-# endif
-    ret = byte_regex_compile (pattern, length, re_syntax_options, bufp);
-
-  if (!ret)
-    return NULL;
-  return gettext (re_error_msgid + re_error_msgid_idx[(int) ret]);
-}
-
-/* Entry points compatible with 4.2 BSD regex library.  We don't define
-   them unless specifically requested.  */
-
-#if defined _REGEX_RE_COMP || defined _LIBC
-
-/* BSD has one and only one pattern buffer.  */
-static struct re_pattern_buffer re_comp_buf;
-
-char *
-#ifdef _LIBC
-/* Make these definitions weak in libc, so POSIX programs can redefine
-   these names if they don't use our functions, and still use
-   regcomp/regexec below without link errors.  */
-weak_function
-#endif
-re_comp (const char *s)
-{
-  reg_errcode_t ret;
-
-  if (!s)
-    {
-      if (!re_comp_buf.buffer)
-	return gettext ("No previous regular expression");
-      return 0;
-    }
-
-  if (!re_comp_buf.buffer)
-    {
-      re_comp_buf.buffer = (unsigned char *) malloc (200);
-      if (re_comp_buf.buffer == NULL)
-        return (char *) gettext (re_error_msgid
-				 + re_error_msgid_idx[(int) REG_ESPACE]);
-      re_comp_buf.allocated = 200;
-
-      re_comp_buf.fastmap = (char *) malloc (1 << BYTEWIDTH);
-      if (re_comp_buf.fastmap == NULL)
-	return (char *) gettext (re_error_msgid
-				 + re_error_msgid_idx[(int) REG_ESPACE]);
-    }
-
-  /* Since `re_exec' always passes NULL for the `regs' argument, we
-     don't need to initialize the pattern buffer fields which affect it.  */
-
-  /* Match anchors at newlines.  */
-  re_comp_buf.newline_anchor = 1;
-
-# ifdef MBS_SUPPORT
-  if (MB_CUR_MAX != 1)
-    ret = wcs_regex_compile (s, strlen (s), re_syntax_options, &re_comp_buf);
-  else
-# endif
-    ret = byte_regex_compile (s, strlen (s), re_syntax_options, &re_comp_buf);
-
-  if (!ret)
-    return NULL;
-
-  /* Yes, we're discarding `const' here if !HAVE_LIBINTL.  */
-  return (char *) gettext (re_error_msgid + re_error_msgid_idx[(int) ret]);
-}
-
-
-int
-#if defined _LIBC || defined __UCLIBC__
-weak_function
-#endif
-re_exec (const char *s)
-{
-  const int len = strlen (s);
-  return
-    0 <= re_search (&re_comp_buf, s, len, 0, len, (struct re_registers *) 0);
-}
-
-#endif /* _REGEX_RE_COMP */
-
-/* POSIX.2 functions.  Don't define these for Emacs.  */
-
-#ifndef emacs
-
-/* regcomp takes a regular expression as a string and compiles it.
-
-   PREG is a regex_t *.  We do not expect any fields to be initialized,
-   since POSIX says we shouldn't.  Thus, we set
-
-     `buffer' to the compiled pattern;
-     `used' to the length of the compiled pattern;
-     `syntax' to RE_SYNTAX_POSIX_EXTENDED if the
-       REG_EXTENDED bit in CFLAGS is set; otherwise, to
-       RE_SYNTAX_POSIX_BASIC;
-     `newline_anchor' to REG_NEWLINE being set in CFLAGS;
-     `fastmap' to an allocated space for the fastmap;
-     `fastmap_accurate' to zero;
-     `re_nsub' to the number of subexpressions in PATTERN.
-
-   PATTERN is the address of the pattern string.
-
-   CFLAGS is a series of bits which affect compilation.
-
-     If REG_EXTENDED is set, we use POSIX extended syntax; otherwise, we
-     use POSIX basic syntax.
-
-     If REG_NEWLINE is set, then . and [^...] don't match newline.
-     Also, regexec will try a match beginning after every newline.
-
-     If REG_ICASE is set, then we considers upper- and lowercase
-     versions of letters to be equivalent when matching.
-
-     If REG_NOSUB is set, then when PREG is passed to regexec, that
-     routine will report only success or failure, and nothing about the
-     registers.
-
-   It returns 0 if it succeeds, nonzero if it doesn't.  (See regex.h for
-   the return codes and their meanings.)  */
-
-int
-regcomp (
-    regex_t *preg,
-    const char *pattern,
-    int cflags)
-{
-  reg_errcode_t ret;
-  reg_syntax_t syntax
-    = (cflags & REG_EXTENDED) ?
-      RE_SYNTAX_POSIX_EXTENDED : RE_SYNTAX_POSIX_BASIC;
-
-  /* regex_compile will allocate the space for the compiled pattern.  */
-  preg->buffer = 0;
-  preg->allocated = 0;
-  preg->used = 0;
-
-  /* Try to allocate space for the fastmap.  */
-  preg->fastmap = (char *) malloc (1 << BYTEWIDTH);
-
-  if (cflags & REG_ICASE)
-    {
-      unsigned i;
-
-      preg->translate
-	= (__RE_TRANSLATE_TYPE) malloc (CHAR_SET_SIZE
-				      * sizeof (*(__RE_TRANSLATE_TYPE)0));
-      if (preg->translate == NULL)
-        return (int) REG_ESPACE;
-
-      /* Map uppercase characters to corresponding lowercase ones.  */
-      for (i = 0; i < CHAR_SET_SIZE; i++)
-        preg->translate[i] = ISUPPER (i) ? TOLOWER (i) : i;
-    }
-  else
-    preg->translate = NULL;
-
-  /* If REG_NEWLINE is set, newlines are treated differently.  */
-  if (cflags & REG_NEWLINE)
-    { /* REG_NEWLINE implies neither . nor [^...] match newline.  */
-      syntax &= ~RE_DOT_NEWLINE;
-      syntax |= RE_HAT_LISTS_NOT_NEWLINE;
-      /* It also changes the matching behavior.  */
-      preg->newline_anchor = 1;
-    }
-  else
-    preg->newline_anchor = 0;
-
-  preg->no_sub = !!(cflags & REG_NOSUB);
-
-  /* POSIX says a null character in the pattern terminates it, so we
-     can use strlen here in compiling the pattern.  */
-# ifdef MBS_SUPPORT
-  if (MB_CUR_MAX != 1)
-    ret = wcs_regex_compile (pattern, strlen (pattern), syntax, preg);
-  else
-# endif
-    ret = byte_regex_compile (pattern, strlen (pattern), syntax, preg);
-
-  /* POSIX doesn't distinguish between an unmatched open-group and an
-     unmatched close-group: both are REG_EPAREN.  */
-  if (ret == REG_ERPAREN) ret = REG_EPAREN;
-
-  if (ret == REG_NOERROR && preg->fastmap)
-    {
-      /* Compute the fastmap now, since regexec cannot modify the pattern
-	 buffer.  */
-      if (re_compile_fastmap (preg) == -2)
-	{
-	  /* Some error occurred while computing the fastmap, just forget
-	     about it.  */
-	  free (preg->fastmap);
-	  preg->fastmap = NULL;
-	}
-    }
-
-  return (int) ret;
-}
-
-
-/* regexec searches for a given pattern, specified by PREG, in the
-   string STRING.
-
-   If NMATCH is zero or REG_NOSUB was set in the cflags argument to
-   `regcomp', we ignore PMATCH.  Otherwise, we assume PMATCH has at
-   least NMATCH elements, and we set them to the offsets of the
-   corresponding matched substrings.
-
-   EFLAGS specifies `execution flags' which affect matching: if
-   REG_NOTBOL is set, then ^ does not match at the beginning of the
-   string; if REG_NOTEOL is set, then $ does not match at the end.
-
-   We return 0 if we find a match and REG_NOMATCH if not.  */
-
-int
-regexec (
-    const regex_t *preg,
-    const char *string,
-    size_t nmatch,
-    regmatch_t pmatch[],
-    int eflags)
-{
-  int ret;
-  struct re_registers regs;
-  regex_t private_preg;
-  int len = strlen (string);
-  boolean want_reg_info = !preg->no_sub && nmatch > 0;
-
-  /* use hidden memcpy() ourselves rather than gcc calling public memcpy() */
-  memcpy(&private_preg, preg, sizeof(*preg));
-
-  private_preg.not_bol = !!(eflags & REG_NOTBOL);
-  private_preg.not_eol = !!(eflags & REG_NOTEOL);
-
-  /* The user has told us exactly how many registers to return
-     information about, via `nmatch'.  We have to pass that on to the
-     matching routines.  */
-  private_preg.regs_allocated = REGS_FIXED;
-
-  if (want_reg_info)
-    {
-      regs.num_regs = nmatch;
-      regs.start = TALLOC (nmatch * 2, regoff_t);
-      if (regs.start == NULL)
-        return (int) REG_NOMATCH;
-      regs.end = regs.start + nmatch;
-    }
-
-  /* Perform the searching operation.  */
-  ret = re_search (&private_preg, string, len,
-                   /* start: */ 0, /* range: */ len,
-                   want_reg_info ? &regs : (struct re_registers *) 0);
-
-  /* Copy the register information to the POSIX structure.  */
-  if (want_reg_info)
-    {
-      if (ret >= 0)
-        {
-          unsigned r;
-
-          for (r = 0; r < nmatch; r++)
-            {
-              pmatch[r].rm_so = regs.start[r];
-              pmatch[r].rm_eo = regs.end[r];
-            }
-        }
-
-      /* If we needed the temporary register info, free the space now.  */
-      free (regs.start);
-    }
-
-  /* We want zero return to mean success, unlike `re_search'.  */
-  return ret >= 0 ? (int) REG_NOERROR : (int) REG_NOMATCH;
-}
-libc_hidden_def(regexec)
-
-
-/* Returns a message corresponding to an error code, ERRCODE, returned
-   from either regcomp or regexec.   We don't use PREG here.  */
-
-size_t
-regerror (
-    int errcode,
-    const regex_t * preg attribute_unused,
-    char *errbuf,
-    size_t errbuf_size)
-{
-  const char *msg;
-  size_t msg_size;
-
-  if (errcode < 0
-      || errcode >= (int) (sizeof (re_error_msgid_idx)
-			   / sizeof (re_error_msgid_idx[0])))
-    /* Only error codes returned by the rest of the code should be passed
-       to this routine.  If we are given anything else, or if other regex
-       code generates an invalid error code, then the program has a bug.
-       Dump core so we can fix it.  */
-    abort ();
-
-  msg = gettext (re_error_msgid + re_error_msgid_idx[errcode]);
-
-  msg_size = strlen (msg) + 1; /* Includes the null.  */
-
-  if (errbuf_size != 0)
-    {
-      if (msg_size > errbuf_size)
-        {
-          memcpy (errbuf, msg, errbuf_size - 1);
-          errbuf[errbuf_size - 1] = 0;
-        }
-      else
-        memcpy (errbuf, msg, msg_size);
-    }
-
-  return msg_size;
-}
-
-
-/* Free dynamically allocated space used by PREG.  */
-
-void
-regfree (regex_t *preg)
-{
-  free (preg->buffer);
-  preg->buffer = NULL;
-
-  preg->allocated = 0;
-  preg->used = 0;
-
-  free (preg->fastmap);
-  preg->fastmap = NULL;
-  preg->fastmap_accurate = 0;
-
-  free (preg->translate);
-  preg->translate = NULL;
-}
-libc_hidden_def(regfree)
-
-#endif /* not emacs  */
-
-#endif /* not INSIDE_RECURSION */
-
-
-#undef STORE_NUMBER
-#undef STORE_NUMBER_AND_INCR
-#undef EXTRACT_NUMBER
-#undef EXTRACT_NUMBER_AND_INCR
-
-#undef DEBUG_PRINT_COMPILED_PATTERN
-#undef DEBUG_PRINT_DOUBLE_STRING
-
-#undef INIT_FAIL_STACK
-#undef RESET_FAIL_STACK
-#undef DOUBLE_FAIL_STACK
-#undef PUSH_PATTERN_OP
-#undef PUSH_FAILURE_POINTER
-#undef PUSH_FAILURE_INT
-#undef PUSH_FAILURE_ELT
-#undef POP_FAILURE_POINTER
-#undef POP_FAILURE_INT
-#undef POP_FAILURE_ELT
-#undef DEBUG_PUSH
-#undef DEBUG_POP
-#undef PUSH_FAILURE_POINT
-#undef POP_FAILURE_POINT
-
-#undef REG_UNSET_VALUE
-#undef REG_UNSET
-
-#undef PATFETCH
-#undef PATFETCH_RAW
-#undef PATUNFETCH
-#undef TRANSLATE
-
-#undef INIT_BUF_SIZE
-#undef GET_BUFFER_SPACE
-#undef BUF_PUSH
-#undef BUF_PUSH_2
-#undef BUF_PUSH_3
-#undef STORE_JUMP
-#undef STORE_JUMP2
-#undef INSERT_JUMP
-#undef INSERT_JUMP2
-#undef EXTEND_BUFFER
-#undef GET_UNSIGNED_NUMBER
-#undef FREE_STACK_RETURN
-
-# undef POINTER_TO_OFFSET
-# undef MATCHING_IN_FRST_STRING
-# undef PREFETCH
-# undef AT_STRINGS_BEG
-# undef AT_STRINGS_END
-# undef WORDCHAR_P
-# undef FREE_VAR
-# undef FREE_VARIABLES
-# undef NO_HIGHEST_ACTIVE_REG
-# undef NO_LOWEST_ACTIVE_REG
-
-# undef CHAR_T
-# undef UCHAR_T
-# undef COMPILED_BUFFER_VAR
-# undef OFFSET_ADDRESS_SIZE
-# undef CHAR_CLASS_SIZE
-# undef PREFIX
-# undef ARG_PREFIX
-# undef PUT_CHAR
-# undef BYTE
-# undef WCHAR
-
-# define DEFINED_ONCE