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/* Definitions for data structures and routines for the regular
/* Definitions for data structures and routines for the regular
   expression library, version 0.12.
   expression library, version 0.12.
 
 
   Copyright (C) 1985, 1989, 1990, 1991, 1992, 1993, 1995, 1996, 1997,
   Copyright (C) 1985, 1989, 1990, 1991, 1992, 1993, 1995, 1996, 1997,
   1998, 2000, 2005 Free Software Foundation, Inc.
   1998, 2000, 2005 Free Software Foundation, Inc.
 
 
   This file is part of the GNU C Library.  Its master source is NOT part of
   This file is part of the GNU C Library.  Its master source is NOT part of
   the C library, however.  The master source lives in /gd/gnu/lib.
   the C library, however.  The master source lives in /gd/gnu/lib.
 
 
   The GNU C Library is free software; you can redistribute it and/or
   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
   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,
   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.
   Lesser General Public License for more details.
 
 
   You should have received a copy of the GNU Lesser General Public
   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301 USA.  */
   02110-1301 USA.  */
 
 
#ifndef _REGEX_H
#ifndef _REGEX_H
#define _REGEX_H 1
#define _REGEX_H 1
 
 
/* Allow the use in C++ code.  */
/* Allow the use in C++ code.  */
#ifdef __cplusplus
#ifdef __cplusplus
extern "C" {
extern "C" {
#endif
#endif
 
 
/* POSIX says that <sys/types.h> must be included (by the caller) before
/* POSIX says that <sys/types.h> must be included (by the caller) before
   <regex.h>.  */
   <regex.h>.  */
 
 
#if !defined _POSIX_C_SOURCE && !defined _POSIX_SOURCE && defined VMS
#if !defined _POSIX_C_SOURCE && !defined _POSIX_SOURCE && defined VMS
/* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it
/* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it
   should be there.  */
   should be there.  */
# include <stddef.h>
# include <stddef.h>
#endif
#endif
 
 
/* The following two types have to be signed and unsigned integer type
/* The following two types have to be signed and unsigned integer type
   wide enough to hold a value of a pointer.  For most ANSI compilers
   wide enough to hold a value of a pointer.  For most ANSI compilers
   ptrdiff_t and size_t should be likely OK.  Still size of these two
   ptrdiff_t and size_t should be likely OK.  Still size of these two
   types is 2 for Microsoft C.  Ugh... */
   types is 2 for Microsoft C.  Ugh... */
typedef long int s_reg_t;
typedef long int s_reg_t;
typedef unsigned long int active_reg_t;
typedef unsigned long int active_reg_t;
 
 
/* The following bits are used to determine the regexp syntax we
/* The following bits are used to determine the regexp syntax we
   recognize.  The set/not-set meanings are chosen so that Emacs syntax
   recognize.  The set/not-set meanings are chosen so that Emacs syntax
   remains the value 0.  The bits are given in alphabetical order, and
   remains the value 0.  The bits are given in alphabetical order, and
   the definitions shifted by one from the previous bit; thus, when we
   the definitions shifted by one from the previous bit; thus, when we
   add or remove a bit, only one other definition need change.  */
   add or remove a bit, only one other definition need change.  */
typedef unsigned long int reg_syntax_t;
typedef unsigned long int reg_syntax_t;
 
 
/* If this bit is not set, then \ inside a bracket expression is literal.
/* If this bit is not set, then \ inside a bracket expression is literal.
   If set, then such a \ quotes the following character.  */
   If set, then such a \ quotes the following character.  */
#define RE_BACKSLASH_ESCAPE_IN_LISTS ((unsigned long int) 1)
#define RE_BACKSLASH_ESCAPE_IN_LISTS ((unsigned long int) 1)
 
 
/* If this bit is not set, then + and ? are operators, and \+ and \? are
/* If this bit is not set, then + and ? are operators, and \+ and \? are
     literals.
     literals.
   If set, then \+ and \? are operators and + and ? are literals.  */
   If set, then \+ and \? are operators and + and ? are literals.  */
#define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
#define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
 
 
/* If this bit is set, then character classes are supported.  They are:
/* If this bit is set, then character classes are supported.  They are:
     [:alpha:], [:upper:], [:lower:],  [:digit:], [:alnum:], [:xdigit:],
     [:alpha:], [:upper:], [:lower:],  [:digit:], [:alnum:], [:xdigit:],
     [:space:], [:print:], [:punct:], [:graph:], and [:cntrl:].
     [:space:], [:print:], [:punct:], [:graph:], and [:cntrl:].
   If not set, then character classes are not supported.  */
   If not set, then character classes are not supported.  */
#define RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1)
#define RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1)
 
 
/* If this bit is set, then ^ and $ are always anchors (outside bracket
/* If this bit is set, then ^ and $ are always anchors (outside bracket
     expressions, of course).
     expressions, of course).
   If this bit is not set, then it depends:
   If this bit is not set, then it depends:
        ^  is an anchor if it is at the beginning of a regular
        ^  is an anchor if it is at the beginning of a regular
           expression or after an open-group or an alternation operator;
           expression or after an open-group or an alternation operator;
        $  is an anchor if it is at the end of a regular expression, or
        $  is an anchor if it is at the end of a regular expression, or
           before a close-group or an alternation operator.
           before a close-group or an alternation operator.
 
 
   This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because
   This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because
   POSIX draft 11.2 says that * etc. in leading positions is undefined.
   POSIX draft 11.2 says that * etc. in leading positions is undefined.
   We already implemented a previous draft which made those constructs
   We already implemented a previous draft which made those constructs
   invalid, though, so we haven't changed the code back.  */
   invalid, though, so we haven't changed the code back.  */
#define RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1)
#define RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1)
 
 
/* If this bit is set, then special characters are always special
/* If this bit is set, then special characters are always special
     regardless of where they are in the pattern.
     regardless of where they are in the pattern.
   If this bit is not set, then special characters are special only in
   If this bit is not set, then special characters are special only in
     some contexts; otherwise they are ordinary.  Specifically,
     some contexts; otherwise they are ordinary.  Specifically,
     * + ? and intervals are only special when not after the beginning,
     * + ? and intervals are only special when not after the beginning,
     open-group, or alternation operator.  */
     open-group, or alternation operator.  */
#define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1)
#define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1)
 
 
/* If this bit is set, then *, +, ?, and { cannot be first in an re or
/* If this bit is set, then *, +, ?, and { cannot be first in an re or
     immediately after an alternation or begin-group operator.  */
     immediately after an alternation or begin-group operator.  */
#define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1)
#define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1)
 
 
/* If this bit is set, then . matches newline.
/* If this bit is set, then . matches newline.
   If not set, then it doesn't.  */
   If not set, then it doesn't.  */
#define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1)
#define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1)
 
 
/* If this bit is set, then . doesn't match NUL.
/* If this bit is set, then . doesn't match NUL.
   If not set, then it does.  */
   If not set, then it does.  */
#define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1)
#define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1)
 
 
/* If this bit is set, nonmatching lists [^...] do not match newline.
/* If this bit is set, nonmatching lists [^...] do not match newline.
   If not set, they do.  */
   If not set, they do.  */
#define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)
#define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)
 
 
/* If this bit is set, either \{...\} or {...} defines an
/* If this bit is set, either \{...\} or {...} defines an
     interval, depending on RE_NO_BK_BRACES.
     interval, depending on RE_NO_BK_BRACES.
   If not set, \{, \}, {, and } are literals.  */
   If not set, \{, \}, {, and } are literals.  */
#define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1)
#define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1)
 
 
/* If this bit is set, +, ? and | aren't recognized as operators.
/* If this bit is set, +, ? and | aren't recognized as operators.
   If not set, they are.  */
   If not set, they are.  */
#define RE_LIMITED_OPS (RE_INTERVALS << 1)
#define RE_LIMITED_OPS (RE_INTERVALS << 1)
 
 
/* If this bit is set, newline is an alternation operator.
/* If this bit is set, newline is an alternation operator.
   If not set, newline is literal.  */
   If not set, newline is literal.  */
#define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
#define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
 
 
/* If this bit is set, then `{...}' defines an interval, and \{ and \}
/* If this bit is set, then `{...}' defines an interval, and \{ and \}
     are literals.
     are literals.
  If not set, then `\{...\}' defines an interval.  */
  If not set, then `\{...\}' defines an interval.  */
#define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)
#define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)
 
 
/* If this bit is set, (...) defines a group, and \( and \) are literals.
/* If this bit is set, (...) defines a group, and \( and \) are literals.
   If not set, \(...\) defines a group, and ( and ) are literals.  */
   If not set, \(...\) defines a group, and ( and ) are literals.  */
#define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1)
#define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1)
 
 
/* If this bit is set, then \<digit> matches <digit>.
/* If this bit is set, then \<digit> matches <digit>.
   If not set, then \<digit> is a back-reference.  */
   If not set, then \<digit> is a back-reference.  */
#define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1)
#define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1)
 
 
/* If this bit is set, then | is an alternation operator, and \| is literal.
/* If this bit is set, then | is an alternation operator, and \| is literal.
   If not set, then \| is an alternation operator, and | is literal.  */
   If not set, then \| is an alternation operator, and | is literal.  */
#define RE_NO_BK_VBAR (RE_NO_BK_REFS << 1)
#define RE_NO_BK_VBAR (RE_NO_BK_REFS << 1)
 
 
/* If this bit is set, then an ending range point collating higher
/* If this bit is set, then an ending range point collating higher
     than the starting range point, as in [z-a], is invalid.
     than the starting range point, as in [z-a], is invalid.
   If not set, then when ending range point collates higher than the
   If not set, then when ending range point collates higher than the
     starting range point, the range is ignored.  */
     starting range point, the range is ignored.  */
#define RE_NO_EMPTY_RANGES (RE_NO_BK_VBAR << 1)
#define RE_NO_EMPTY_RANGES (RE_NO_BK_VBAR << 1)
 
 
/* If this bit is set, then an unmatched ) is ordinary.
/* If this bit is set, then an unmatched ) is ordinary.
   If not set, then an unmatched ) is invalid.  */
   If not set, then an unmatched ) is invalid.  */
#define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)
#define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)
 
 
/* If this bit is set, succeed as soon as we match the whole pattern,
/* If this bit is set, succeed as soon as we match the whole pattern,
   without further backtracking.  */
   without further backtracking.  */
#define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1)
#define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1)
 
 
/* If this bit is set, do not process the GNU regex operators.
/* If this bit is set, do not process the GNU regex operators.
   If not set, then the GNU regex operators are recognized. */
   If not set, then the GNU regex operators are recognized. */
#define RE_NO_GNU_OPS (RE_NO_POSIX_BACKTRACKING << 1)
#define RE_NO_GNU_OPS (RE_NO_POSIX_BACKTRACKING << 1)
 
 
/* If this bit is set, turn on internal regex debugging.
/* If this bit is set, turn on internal regex debugging.
   If not set, and debugging was on, turn it off.
   If not set, and debugging was on, turn it off.
   This only works if regex.c is compiled -DDEBUG.
   This only works if regex.c is compiled -DDEBUG.
   We define this bit always, so that all that's needed to turn on
   We define this bit always, so that all that's needed to turn on
   debugging is to recompile regex.c; the calling code can always have
   debugging is to recompile regex.c; the calling code can always have
   this bit set, and it won't affect anything in the normal case. */
   this bit set, and it won't affect anything in the normal case. */
#define RE_DEBUG (RE_NO_GNU_OPS << 1)
#define RE_DEBUG (RE_NO_GNU_OPS << 1)
 
 
/* If this bit is set, a syntactically invalid interval is treated as
/* If this bit is set, a syntactically invalid interval is treated as
   a string of ordinary characters.  For example, the ERE 'a{1' is
   a string of ordinary characters.  For example, the ERE 'a{1' is
   treated as 'a\{1'.  */
   treated as 'a\{1'.  */
#define RE_INVALID_INTERVAL_ORD (RE_DEBUG << 1)
#define RE_INVALID_INTERVAL_ORD (RE_DEBUG << 1)
 
 
/* This global variable defines the particular regexp syntax to use (for
/* This global variable defines the particular regexp syntax to use (for
   some interfaces).  When a regexp is compiled, the syntax used is
   some interfaces).  When a regexp is compiled, the syntax used is
   stored in the pattern buffer, so changing this does not affect
   stored in the pattern buffer, so changing this does not affect
   already-compiled regexps.  */
   already-compiled regexps.  */
extern reg_syntax_t re_syntax_options;
extern reg_syntax_t re_syntax_options;


/* Define combinations of the above bits for the standard possibilities.
/* Define combinations of the above bits for the standard possibilities.
   (The [[[ comments delimit what gets put into the Texinfo file, so
   (The [[[ comments delimit what gets put into the Texinfo file, so
   don't delete them!)  */
   don't delete them!)  */
/* [[[begin syntaxes]]] */
/* [[[begin syntaxes]]] */
#define RE_SYNTAX_EMACS 0
#define RE_SYNTAX_EMACS 0
 
 
#define RE_SYNTAX_AWK                                                   \
#define RE_SYNTAX_AWK                                                   \
  (RE_BACKSLASH_ESCAPE_IN_LISTS   | RE_DOT_NOT_NULL                     \
  (RE_BACKSLASH_ESCAPE_IN_LISTS   | RE_DOT_NOT_NULL                     \
   | RE_NO_BK_PARENS              | RE_NO_BK_REFS                       \
   | RE_NO_BK_PARENS              | RE_NO_BK_REFS                       \
   | RE_NO_BK_VBAR                | RE_NO_EMPTY_RANGES                  \
   | RE_NO_BK_VBAR                | RE_NO_EMPTY_RANGES                  \
   | RE_DOT_NEWLINE               | RE_CONTEXT_INDEP_ANCHORS            \
   | RE_DOT_NEWLINE               | RE_CONTEXT_INDEP_ANCHORS            \
   | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)
   | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)
 
 
#define RE_SYNTAX_GNU_AWK                                               \
#define RE_SYNTAX_GNU_AWK                                               \
  ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG) \
  ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG) \
   & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS))
   & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS))
 
 
#define RE_SYNTAX_POSIX_AWK                                             \
#define RE_SYNTAX_POSIX_AWK                                             \
  (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS              \
  (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS              \
   | RE_INTERVALS           | RE_NO_GNU_OPS)
   | RE_INTERVALS           | RE_NO_GNU_OPS)
 
 
#define RE_SYNTAX_GREP                                                  \
#define RE_SYNTAX_GREP                                                  \
  (RE_BK_PLUS_QM              | RE_CHAR_CLASSES                         \
  (RE_BK_PLUS_QM              | RE_CHAR_CLASSES                         \
   | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS                            \
   | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS                            \
   | RE_NEWLINE_ALT)
   | RE_NEWLINE_ALT)
 
 
#define RE_SYNTAX_EGREP                                                 \
#define RE_SYNTAX_EGREP                                                 \
  (RE_CHAR_CLASSES        | RE_CONTEXT_INDEP_ANCHORS                    \
  (RE_CHAR_CLASSES        | RE_CONTEXT_INDEP_ANCHORS                    \
   | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE                    \
   | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE                    \
   | RE_NEWLINE_ALT       | RE_NO_BK_PARENS                             \
   | RE_NEWLINE_ALT       | RE_NO_BK_PARENS                             \
   | RE_NO_BK_VBAR)
   | RE_NO_BK_VBAR)
 
 
#define RE_SYNTAX_POSIX_EGREP                                           \
#define RE_SYNTAX_POSIX_EGREP                                           \
  (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES                     \
  (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES                     \
   | RE_INVALID_INTERVAL_ORD)
   | RE_INVALID_INTERVAL_ORD)
 
 
/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff.  */
/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff.  */
#define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
#define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
 
 
#define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
#define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
 
 
/* Syntax bits common to both basic and extended POSIX regex syntax.  */
/* Syntax bits common to both basic and extended POSIX regex syntax.  */
#define _RE_SYNTAX_POSIX_COMMON                                         \
#define _RE_SYNTAX_POSIX_COMMON                                         \
  (RE_CHAR_CLASSES | RE_DOT_NEWLINE      | RE_DOT_NOT_NULL              \
  (RE_CHAR_CLASSES | RE_DOT_NEWLINE      | RE_DOT_NOT_NULL              \
   | RE_INTERVALS  | RE_NO_EMPTY_RANGES)
   | RE_INTERVALS  | RE_NO_EMPTY_RANGES)
 
 
#define RE_SYNTAX_POSIX_BASIC                                           \
#define RE_SYNTAX_POSIX_BASIC                                           \
  (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM)
  (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM)
 
 
/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
   RE_LIMITED_OPS, i.e., \? \+ \| are not recognized.  Actually, this
   RE_LIMITED_OPS, i.e., \? \+ \| are not recognized.  Actually, this
   isn't minimal, since other operators, such as \`, aren't disabled.  */
   isn't minimal, since other operators, such as \`, aren't disabled.  */
#define RE_SYNTAX_POSIX_MINIMAL_BASIC                                   \
#define RE_SYNTAX_POSIX_MINIMAL_BASIC                                   \
  (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS)
  (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS)
 
 
#define RE_SYNTAX_POSIX_EXTENDED                                        \
#define RE_SYNTAX_POSIX_EXTENDED                                        \
  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS                  \
  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS                  \
   | RE_CONTEXT_INDEP_OPS   | RE_NO_BK_BRACES                           \
   | RE_CONTEXT_INDEP_OPS   | RE_NO_BK_BRACES                           \
   | RE_NO_BK_PARENS        | RE_NO_BK_VBAR                             \
   | RE_NO_BK_PARENS        | RE_NO_BK_VBAR                             \
   | RE_CONTEXT_INVALID_OPS | RE_UNMATCHED_RIGHT_PAREN_ORD)
   | RE_CONTEXT_INVALID_OPS | RE_UNMATCHED_RIGHT_PAREN_ORD)
 
 
/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is
/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is
   removed and RE_NO_BK_REFS is added.  */
   removed and RE_NO_BK_REFS is added.  */
#define RE_SYNTAX_POSIX_MINIMAL_EXTENDED                                \
#define RE_SYNTAX_POSIX_MINIMAL_EXTENDED                                \
  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS                  \
  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS                  \
   | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES                           \
   | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES                           \
   | RE_NO_BK_PARENS        | RE_NO_BK_REFS                             \
   | RE_NO_BK_PARENS        | RE_NO_BK_REFS                             \
   | RE_NO_BK_VBAR          | RE_UNMATCHED_RIGHT_PAREN_ORD)
   | RE_NO_BK_VBAR          | RE_UNMATCHED_RIGHT_PAREN_ORD)
/* [[[end syntaxes]]] */
/* [[[end syntaxes]]] */


/* Maximum number of duplicates an interval can allow.  Some systems
/* Maximum number of duplicates an interval can allow.  Some systems
   (erroneously) define this in other header files, but we want our
   (erroneously) define this in other header files, but we want our
   value, so remove any previous define.  */
   value, so remove any previous define.  */
#ifdef RE_DUP_MAX
#ifdef RE_DUP_MAX
# undef RE_DUP_MAX
# undef RE_DUP_MAX
#endif
#endif
/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows.  */
/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows.  */
#define RE_DUP_MAX (0x7fff)
#define RE_DUP_MAX (0x7fff)
 
 
 
 
/* POSIX `cflags' bits (i.e., information for `regcomp').  */
/* POSIX `cflags' bits (i.e., information for `regcomp').  */
 
 
/* If this bit is set, then use extended regular expression syntax.
/* If this bit is set, then use extended regular expression syntax.
   If not set, then use basic regular expression syntax.  */
   If not set, then use basic regular expression syntax.  */
#define REG_EXTENDED 1
#define REG_EXTENDED 1
 
 
/* If this bit is set, then ignore case when matching.
/* If this bit is set, then ignore case when matching.
   If not set, then case is significant.  */
   If not set, then case is significant.  */
#define REG_ICASE (REG_EXTENDED << 1)
#define REG_ICASE (REG_EXTENDED << 1)
 
 
/* If this bit is set, then anchors do not match at newline
/* If this bit is set, then anchors do not match at newline
     characters in the string.
     characters in the string.
   If not set, then anchors do match at newlines.  */
   If not set, then anchors do match at newlines.  */
#define REG_NEWLINE (REG_ICASE << 1)
#define REG_NEWLINE (REG_ICASE << 1)
 
 
/* If this bit is set, then report only success or fail in regexec.
/* If this bit is set, then report only success or fail in regexec.
   If not set, then returns differ between not matching and errors.  */
   If not set, then returns differ between not matching and errors.  */
#define REG_NOSUB (REG_NEWLINE << 1)
#define REG_NOSUB (REG_NEWLINE << 1)
 
 
 
 
/* POSIX `eflags' bits (i.e., information for regexec).  */
/* POSIX `eflags' bits (i.e., information for regexec).  */
 
 
/* If this bit is set, then the beginning-of-line operator doesn't match
/* If this bit is set, then the beginning-of-line operator doesn't match
     the beginning of the string (presumably because it's not the
     the beginning of the string (presumably because it's not the
     beginning of a line).
     beginning of a line).
   If not set, then the beginning-of-line operator does match the
   If not set, then the beginning-of-line operator does match the
     beginning of the string.  */
     beginning of the string.  */
#define REG_NOTBOL 1
#define REG_NOTBOL 1
 
 
/* Like REG_NOTBOL, except for the end-of-line.  */
/* Like REG_NOTBOL, except for the end-of-line.  */
#define REG_NOTEOL (1 << 1)
#define REG_NOTEOL (1 << 1)
 
 
 
 
/* If any error codes are removed, changed, or added, update the
/* If any error codes are removed, changed, or added, update the
   `re_error_msg' table in regex.c.  */
   `re_error_msg' table in regex.c.  */
typedef enum
typedef enum
{
{
#ifdef _XOPEN_SOURCE
#ifdef _XOPEN_SOURCE
  REG_ENOSYS = -1,      /* This will never happen for this implementation.  */
  REG_ENOSYS = -1,      /* This will never happen for this implementation.  */
#endif
#endif
 
 
  REG_NOERROR = 0,       /* Success.  */
  REG_NOERROR = 0,       /* Success.  */
  REG_NOMATCH,          /* Didn't find a match (for regexec).  */
  REG_NOMATCH,          /* Didn't find a match (for regexec).  */
 
 
  /* POSIX regcomp return error codes.  (In the order listed in the
  /* POSIX regcomp return error codes.  (In the order listed in the
     standard.)  */
     standard.)  */
  REG_BADPAT,           /* Invalid pattern.  */
  REG_BADPAT,           /* Invalid pattern.  */
  REG_ECOLLATE,         /* Not implemented.  */
  REG_ECOLLATE,         /* Not implemented.  */
  REG_ECTYPE,           /* Invalid character class name.  */
  REG_ECTYPE,           /* Invalid character class name.  */
  REG_EESCAPE,          /* Trailing backslash.  */
  REG_EESCAPE,          /* Trailing backslash.  */
  REG_ESUBREG,          /* Invalid back reference.  */
  REG_ESUBREG,          /* Invalid back reference.  */
  REG_EBRACK,           /* Unmatched left bracket.  */
  REG_EBRACK,           /* Unmatched left bracket.  */
  REG_EPAREN,           /* Parenthesis imbalance.  */
  REG_EPAREN,           /* Parenthesis imbalance.  */
  REG_EBRACE,           /* Unmatched \{.  */
  REG_EBRACE,           /* Unmatched \{.  */
  REG_BADBR,            /* Invalid contents of \{\}.  */
  REG_BADBR,            /* Invalid contents of \{\}.  */
  REG_ERANGE,           /* Invalid range end.  */
  REG_ERANGE,           /* Invalid range end.  */
  REG_ESPACE,           /* Ran out of memory.  */
  REG_ESPACE,           /* Ran out of memory.  */
  REG_BADRPT,           /* No preceding re for repetition op.  */
  REG_BADRPT,           /* No preceding re for repetition op.  */
 
 
  /* Error codes we've added.  */
  /* Error codes we've added.  */
  REG_EEND,             /* Premature end.  */
  REG_EEND,             /* Premature end.  */
  REG_ESIZE,            /* Compiled pattern bigger than 2^16 bytes.  */
  REG_ESIZE,            /* Compiled pattern bigger than 2^16 bytes.  */
  REG_ERPAREN           /* Unmatched ) or \); not returned from regcomp.  */
  REG_ERPAREN           /* Unmatched ) or \); not returned from regcomp.  */
} reg_errcode_t;
} reg_errcode_t;


/* This data structure represents a compiled pattern.  Before calling
/* This data structure represents a compiled pattern.  Before calling
   the pattern compiler, the fields `buffer', `allocated', `fastmap',
   the pattern compiler, the fields `buffer', `allocated', `fastmap',
   `translate', and `no_sub' can be set.  After the pattern has been
   `translate', and `no_sub' can be set.  After the pattern has been
   compiled, the `re_nsub' field is available.  All other fields are
   compiled, the `re_nsub' field is available.  All other fields are
   private to the regex routines.  */
   private to the regex routines.  */
 
 
#ifndef RE_TRANSLATE_TYPE
#ifndef RE_TRANSLATE_TYPE
# define RE_TRANSLATE_TYPE char *
# define RE_TRANSLATE_TYPE char *
#endif
#endif
 
 
struct re_pattern_buffer
struct re_pattern_buffer
{
{
/* [[[begin pattern_buffer]]] */
/* [[[begin pattern_buffer]]] */
        /* Space that holds the compiled pattern.  It is declared as
        /* Space that holds the compiled pattern.  It is declared as
          `unsigned char *' because its elements are
          `unsigned char *' because its elements are
           sometimes used as array indexes.  */
           sometimes used as array indexes.  */
  unsigned char *buffer;
  unsigned char *buffer;
 
 
        /* Number of bytes to which `buffer' points.  */
        /* Number of bytes to which `buffer' points.  */
  unsigned long int allocated;
  unsigned long int allocated;
 
 
        /* Number of bytes actually used in `buffer'.  */
        /* Number of bytes actually used in `buffer'.  */
  unsigned long int used;
  unsigned long int used;
 
 
        /* Syntax setting with which the pattern was compiled.  */
        /* Syntax setting with which the pattern was compiled.  */
  reg_syntax_t syntax;
  reg_syntax_t syntax;
 
 
        /* Pointer to a fastmap, if any, otherwise zero.  re_search uses
        /* Pointer to a fastmap, if any, otherwise zero.  re_search uses
           the fastmap, if there is one, to skip over impossible
           the fastmap, if there is one, to skip over impossible
           starting points for matches.  */
           starting points for matches.  */
  char *fastmap;
  char *fastmap;
 
 
        /* Either a translate table to apply to all characters before
        /* Either a translate table to apply to all characters before
           comparing them, or zero for no translation.  The translation
           comparing them, or zero for no translation.  The translation
           is applied to a pattern when it is compiled and to a string
           is applied to a pattern when it is compiled and to a string
           when it is matched.  */
           when it is matched.  */
  RE_TRANSLATE_TYPE translate;
  RE_TRANSLATE_TYPE translate;
 
 
        /* Number of subexpressions found by the compiler.  */
        /* Number of subexpressions found by the compiler.  */
  size_t re_nsub;
  size_t re_nsub;
 
 
        /* Zero if this pattern cannot match the empty string, one else.
        /* Zero if this pattern cannot match the empty string, one else.
           Well, in truth it's used only in `re_search_2', to see
           Well, in truth it's used only in `re_search_2', to see
           whether or not we should use the fastmap, so we don't set
           whether or not we should use the fastmap, so we don't set
           this absolutely perfectly; see `re_compile_fastmap' (the
           this absolutely perfectly; see `re_compile_fastmap' (the
           `duplicate' case).  */
           `duplicate' case).  */
  unsigned can_be_null : 1;
  unsigned can_be_null : 1;
 
 
        /* If REGS_UNALLOCATED, allocate space in the `regs' structure
        /* If REGS_UNALLOCATED, allocate space in the `regs' structure
             for `max (RE_NREGS, re_nsub + 1)' groups.
             for `max (RE_NREGS, re_nsub + 1)' groups.
           If REGS_REALLOCATE, reallocate space if necessary.
           If REGS_REALLOCATE, reallocate space if necessary.
           If REGS_FIXED, use what's there.  */
           If REGS_FIXED, use what's there.  */
#define REGS_UNALLOCATED 0
#define REGS_UNALLOCATED 0
#define REGS_REALLOCATE 1
#define REGS_REALLOCATE 1
#define REGS_FIXED 2
#define REGS_FIXED 2
  unsigned regs_allocated : 2;
  unsigned regs_allocated : 2;
 
 
        /* Set to zero when `regex_compile' compiles a pattern; set to one
        /* Set to zero when `regex_compile' compiles a pattern; set to one
           by `re_compile_fastmap' if it updates the fastmap.  */
           by `re_compile_fastmap' if it updates the fastmap.  */
  unsigned fastmap_accurate : 1;
  unsigned fastmap_accurate : 1;
 
 
        /* If set, `re_match_2' does not return information about
        /* If set, `re_match_2' does not return information about
           subexpressions.  */
           subexpressions.  */
  unsigned no_sub : 1;
  unsigned no_sub : 1;
 
 
        /* If set, a beginning-of-line anchor doesn't match at the
        /* If set, a beginning-of-line anchor doesn't match at the
           beginning of the string.  */
           beginning of the string.  */
  unsigned not_bol : 1;
  unsigned not_bol : 1;
 
 
        /* Similarly for an end-of-line anchor.  */
        /* Similarly for an end-of-line anchor.  */
  unsigned not_eol : 1;
  unsigned not_eol : 1;
 
 
        /* If true, an anchor at a newline matches.  */
        /* If true, an anchor at a newline matches.  */
  unsigned newline_anchor : 1;
  unsigned newline_anchor : 1;
 
 
/* [[[end pattern_buffer]]] */
/* [[[end pattern_buffer]]] */
};
};
 
 
typedef struct re_pattern_buffer regex_t;
typedef struct re_pattern_buffer regex_t;


/* Type for byte offsets within the string.  POSIX mandates this.  */
/* Type for byte offsets within the string.  POSIX mandates this.  */
typedef int regoff_t;
typedef int regoff_t;
 
 
 
 
/* This is the structure we store register match data in.  See
/* This is the structure we store register match data in.  See
   regex.texinfo for a full description of what registers match.  */
   regex.texinfo for a full description of what registers match.  */
struct re_registers
struct re_registers
{
{
  unsigned num_regs;
  unsigned num_regs;
  regoff_t *start;
  regoff_t *start;
  regoff_t *end;
  regoff_t *end;
};
};
 
 
 
 
/* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
/* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
   `re_match_2' returns information about at least this many registers
   `re_match_2' returns information about at least this many registers
   the first time a `regs' structure is passed.  */
   the first time a `regs' structure is passed.  */
#ifndef RE_NREGS
#ifndef RE_NREGS
# define RE_NREGS 30
# define RE_NREGS 30
#endif
#endif
 
 
 
 
/* POSIX specification for registers.  Aside from the different names than
/* POSIX specification for registers.  Aside from the different names than
   `re_registers', POSIX uses an array of structures, instead of a
   `re_registers', POSIX uses an array of structures, instead of a
   structure of arrays.  */
   structure of arrays.  */
typedef struct
typedef struct
{
{
  regoff_t rm_so;  /* Byte offset from string's start to substring's start.  */
  regoff_t rm_so;  /* Byte offset from string's start to substring's start.  */
  regoff_t rm_eo;  /* Byte offset from string's start to substring's end.  */
  regoff_t rm_eo;  /* Byte offset from string's start to substring's end.  */
} regmatch_t;
} regmatch_t;


/* Declarations for routines.  */
/* Declarations for routines.  */
 
 
/* To avoid duplicating every routine declaration -- once with a
/* To avoid duplicating every routine declaration -- once with a
   prototype (if we are ANSI), and once without (if we aren't) -- we
   prototype (if we are ANSI), and once without (if we aren't) -- we
   use the following macro to declare argument types.  This
   use the following macro to declare argument types.  This
   unfortunately clutters up the declarations a bit, but I think it's
   unfortunately clutters up the declarations a bit, but I think it's
   worth it.  */
   worth it.  */
 
 
/* Sets the current default syntax to SYNTAX, and return the old syntax.
/* Sets the current default syntax to SYNTAX, and return the old syntax.
   You can also simply assign to the `re_syntax_options' variable.  */
   You can also simply assign to the `re_syntax_options' variable.  */
extern reg_syntax_t re_set_syntax (reg_syntax_t syntax);
extern reg_syntax_t re_set_syntax (reg_syntax_t syntax);
 
 
/* Compile the regular expression PATTERN, with length LENGTH
/* Compile the regular expression PATTERN, with length LENGTH
   and syntax given by the global `re_syntax_options', into the buffer
   and syntax given by the global `re_syntax_options', into the buffer
   BUFFER.  Return NULL if successful, and an error string if not.  */
   BUFFER.  Return NULL if successful, and an error string if not.  */
extern const char *re_compile_pattern (const char *pattern, size_t length,
extern const char *re_compile_pattern (const char *pattern, size_t length,
                                       struct re_pattern_buffer *buffer);
                                       struct re_pattern_buffer *buffer);
 
 
 
 
/* Compile a fastmap for the compiled pattern in BUFFER; used to
/* Compile a fastmap for the compiled pattern in BUFFER; used to
   accelerate searches.  Return 0 if successful and -2 if was an
   accelerate searches.  Return 0 if successful and -2 if was an
   internal error.  */
   internal error.  */
extern int re_compile_fastmap (struct re_pattern_buffer *buffer);
extern int re_compile_fastmap (struct re_pattern_buffer *buffer);
 
 
 
 
/* Search in the string STRING (with length LENGTH) for the pattern
/* Search in the string STRING (with length LENGTH) for the pattern
   compiled into BUFFER.  Start searching at position START, for RANGE
   compiled into BUFFER.  Start searching at position START, for RANGE
   characters.  Return the starting position of the match, -1 for no
   characters.  Return the starting position of the match, -1 for no
   match, or -2 for an internal error.  Also return register
   match, or -2 for an internal error.  Also return register
   information in REGS (if REGS and BUFFER->no_sub are nonzero).  */
   information in REGS (if REGS and BUFFER->no_sub are nonzero).  */
extern int re_search (struct re_pattern_buffer *buffer, const char *string,
extern int re_search (struct re_pattern_buffer *buffer, const char *string,
                      int length, int start, int range,
                      int length, int start, int range,
                      struct re_registers *regs);
                      struct re_registers *regs);
 
 
 
 
/* Like `re_search', but search in the concatenation of STRING1 and
/* Like `re_search', but search in the concatenation of STRING1 and
   STRING2.  Also, stop searching at index START + STOP.  */
   STRING2.  Also, stop searching at index START + STOP.  */
extern int re_search_2 (struct re_pattern_buffer *buffer, const char *string1,
extern int re_search_2 (struct re_pattern_buffer *buffer, const char *string1,
                        int length1, const char *string2, int length2,
                        int length1, const char *string2, int length2,
                        int start, int range, struct re_registers *regs,
                        int start, int range, struct re_registers *regs,
                        int stop);
                        int stop);
 
 
 
 
/* Like `re_search', but return how many characters in STRING the regexp
/* Like `re_search', but return how many characters in STRING the regexp
   in BUFFER matched, starting at position START.  */
   in BUFFER matched, starting at position START.  */
extern int re_match (struct re_pattern_buffer *buffer, const char *string,
extern int re_match (struct re_pattern_buffer *buffer, const char *string,
                     int length, int start, struct re_registers *regs);
                     int length, int start, struct re_registers *regs);
 
 
 
 
/* Relates to `re_match' as `re_search_2' relates to `re_search'.  */
/* Relates to `re_match' as `re_search_2' relates to `re_search'.  */
extern int re_match_2 (struct re_pattern_buffer *buffer, const char *string1,
extern int re_match_2 (struct re_pattern_buffer *buffer, const char *string1,
                       int length1, const char *string2, int length2,
                       int length1, const char *string2, int length2,
                       int start, struct re_registers *regs, int stop);
                       int start, struct re_registers *regs, int stop);
 
 
 
 
/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
   ENDS.  Subsequent matches using BUFFER and REGS will use this memory
   ENDS.  Subsequent matches using BUFFER and REGS will use this memory
   for recording register information.  STARTS and ENDS must be
   for recording register information.  STARTS and ENDS must be
   allocated with malloc, and must each be at least `NUM_REGS * sizeof
   allocated with malloc, and must each be at least `NUM_REGS * sizeof
   (regoff_t)' bytes long.
   (regoff_t)' bytes long.
 
 
   If NUM_REGS == 0, then subsequent matches should allocate their own
   If NUM_REGS == 0, then subsequent matches should allocate their own
   register data.
   register data.
 
 
   Unless this function is called, the first search or match using
   Unless this function is called, the first search or match using
   PATTERN_BUFFER will allocate its own register data, without
   PATTERN_BUFFER will allocate its own register data, without
   freeing the old data.  */
   freeing the old data.  */
extern void re_set_registers (struct re_pattern_buffer *buffer,
extern void re_set_registers (struct re_pattern_buffer *buffer,
                              struct re_registers *regs,
                              struct re_registers *regs,
                              unsigned num_regs, regoff_t *starts,
                              unsigned num_regs, regoff_t *starts,
                              regoff_t *ends);
                              regoff_t *ends);
 
 
#if defined _REGEX_RE_COMP || defined _LIBC
#if defined _REGEX_RE_COMP || defined _LIBC
# ifndef _CRAY
# ifndef _CRAY
/* 4.2 bsd compatibility.  */
/* 4.2 bsd compatibility.  */
extern char *re_comp (const char *);
extern char *re_comp (const char *);
extern int re_exec (const char *);
extern int re_exec (const char *);
# endif
# endif
#endif
#endif
 
 
/* GCC 2.95 and later have "__restrict"; C99 compilers have
/* GCC 2.95 and later have "__restrict"; C99 compilers have
   "restrict", and "configure" may have defined "restrict".  */
   "restrict", and "configure" may have defined "restrict".  */
#ifndef __restrict
#ifndef __restrict
# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
#  if defined restrict || 199901L <= __STDC_VERSION__
#  if defined restrict || 199901L <= __STDC_VERSION__
#   define __restrict restrict
#   define __restrict restrict
#  else
#  else
#   define __restrict
#   define __restrict
#  endif
#  endif
# endif
# endif
#endif
#endif
 
 
/* GCC 3.1 and later support declaring arrays as non-overlapping
/* GCC 3.1 and later support declaring arrays as non-overlapping
   using the syntax array_name[restrict]  */
   using the syntax array_name[restrict]  */
#ifndef __restrict_arr
#ifndef __restrict_arr
# if ! (3 < __GNUC__ || (3 == __GNUC__ && 1 <= __GNUC_MINOR__)) || defined (__GNUG__)
# if ! (3 < __GNUC__ || (3 == __GNUC__ && 1 <= __GNUC_MINOR__)) || defined (__GNUG__)
#  define __restrict_arr
#  define __restrict_arr
# else
# else
#  define __restrict_arr __restrict
#  define __restrict_arr __restrict
# endif
# endif
#endif
#endif
 
 
/* POSIX compatibility.  */
/* POSIX compatibility.  */
extern int regcomp (regex_t *__restrict __preg,
extern int regcomp (regex_t *__restrict __preg,
                    const char *__restrict __pattern,
                    const char *__restrict __pattern,
                    int __cflags);
                    int __cflags);
 
 
#if (__GNUC__)
#if (__GNUC__)
__extension__
__extension__
#endif
#endif
extern int regexec (const regex_t *__restrict __preg,
extern int regexec (const regex_t *__restrict __preg,
                    const char *__restrict __string, size_t __nmatch,
                    const char *__restrict __string, size_t __nmatch,
                    regmatch_t __pmatch[__restrict_arr],
                    regmatch_t __pmatch[__restrict_arr],
                    int __eflags);
                    int __eflags);
 
 
extern size_t regerror (int __errcode, const regex_t *__preg,
extern size_t regerror (int __errcode, const regex_t *__preg,
                        char *__errbuf, size_t __errbuf_size);
                        char *__errbuf, size_t __errbuf_size);
 
 
extern void regfree (regex_t *__preg);
extern void regfree (regex_t *__preg);
 
 
 
 
#ifdef __cplusplus
#ifdef __cplusplus
}
}
#endif  /* C++ */
#endif  /* C++ */
 
 
#endif /* regex.h */
#endif /* regex.h */


/*
/*
Local variables:
Local variables:
make-backup-files: t
make-backup-files: t
version-control: t
version-control: t
trim-versions-without-asking: nil
trim-versions-without-asking: nil
End:
End:
*/
*/
 
 

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