/* Getopt for GNU.

   NOTE: getopt is part of the C library, so if you don't know what

   "Keep this file name-space clean" means, talk to drepper@gnu.org

   before changing it!

   Copyright (C) 1987-2014 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/>.  */

/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.

   Ditto for AIX 3.2 and <stdlib.h>.  */

#ifndef _NO_PROTO

# define _NO_PROTO

#endif

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#ifdef HAVE_STDLIB_H

# include <stdlib.h>

#endif

#include <stdio.h>

extern int getopt (int argc, char *const *argv, const char *optstring);

/* Comment out all this code if we are using the GNU C Library, and are not

   actually compiling the library itself.  This code is part of the GNU C

   Library, but also included in many other GNU distributions.  Compiling

   and linking in this code is a waste when using the GNU C library

   (especially if it is a shared library).  Rather than having every GNU

   program understand `configure --with-gnu-libc' and omit the object files,

   it is simpler to just do this in the source for each such file.  */

#define GETOPT_INTERFACE_VERSION 2

#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2

# include <gnu-versions.h>

# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION

#  define ELIDE_CODE

# endif

#endif

#ifndef ELIDE_CODE

/* This needs to come after some library #include

   to get __GNU_LIBRARY__ defined.  */

#ifdef	__GNU_LIBRARY__

/* Don't include stdlib.h for non-GNU C libraries because some of them

   contain conflicting prototypes for getopt.  */

# include <stdlib.h>

# include <unistd.h>

#endif	/* GNU C library.  */

#include <string.h>

#ifdef _LIBC

# include <libintl.h>

#else

# define _(msgid) (msgid)

#endif

#if defined _LIBC

# include <wchar.h>

#endif

#ifndef attribute_hidden

# define attribute_hidden

#endif

/* This version of `getopt' appears to the caller like standard Unix `getopt'

   but it behaves differently for the user, since it allows the user

   to intersperse the options with the other arguments.

   As `getopt' works, it permutes the elements of ARGV so that,

   when it is done, all the options precede everything else.  Thus

   all application programs are extended to handle flexible argument order.

   Setting the environment variable POSIXLY_CORRECT disables permutation.

   Then the behavior is completely standard.

   GNU application programs can use a third alternative mode in which

   they can distinguish the relative order of options and other arguments.  */

#include "getopt.h"

#include "getopt_int.h"

/* For communication from `getopt' to the caller.

   When `getopt' finds an option that takes an argument,

   the argument value is returned here.

   Also, when `ordering' is RETURN_IN_ORDER,

   each non-option ARGV-element is returned here.  */

char *optarg;

/* Index in ARGV of the next element to be scanned.

   This is used for communication to and from the caller

   and for communication between successive calls to `getopt'.

   On entry to `getopt', zero means this is the first call; initialize.

   When `getopt' returns -1, this is the index of the first of the

   non-option elements that the caller should itself scan.

   Otherwise, `optind' communicates from one call to the next

   how much of ARGV has been scanned so far.  */

/* 1003.2 says this must be 1 before any call.  */

int optind = 1;

/* Callers store zero here to inhibit the error message

   for unrecognized options.  */

int opterr = 1;

/* Set to an option character which was unrecognized.

   This must be initialized on some systems to avoid linking in the

   system's own getopt implementation.  */

int optopt = '?';

/* Keep a global copy of all internal members of getopt_data.  */

static struct _getopt_data getopt_data;

#ifndef __GNU_LIBRARY__

/* Avoid depending on library functions or files

   whose names are inconsistent.  */

#ifndef getenv

extern char *getenv (const char *_VarName);

#endif

#endif /* not __GNU_LIBRARY__ */

#ifdef _LIBC

/* Stored original parameters.

   XXX This is no good solution.  We should rather copy the args so

   that we can compare them later.  But we must not use malloc(3).  */

extern int __libc_argc;

extern char **__libc_argv;

/* Bash 2.0 gives us an environment variable containing flags

   indicating ARGV elements that should not be considered arguments.  */

# ifdef USE_NONOPTION_FLAGS

/* Defined in getopt_init.c  */

extern char *__getopt_nonoption_flags;

# endif

# ifdef USE_NONOPTION_FLAGS

#  define SWAP_FLAGS(ch1, ch2) \

  if (d->__nonoption_flags_len > 0)					      \

    {									      \

      char __tmp = __getopt_nonoption_flags[ch1];			      \

      __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2];	      \

      __getopt_nonoption_flags[ch2] = __tmp;				      \

    }

# else

#  define SWAP_FLAGS(ch1, ch2)

# endif

#else	/* !_LIBC */

# define SWAP_FLAGS(ch1, ch2)

#endif	/* _LIBC */

/* Exchange two adjacent subsequences of ARGV.

   One subsequence is elements [first_nonopt,last_nonopt)

   which contains all the non-options that have been skipped so far.

   The other is elements [last_nonopt,optind), which contains all

   the options processed since those non-options were skipped.

   `first_nonopt' and `last_nonopt' are relocated so that they describe

   the new indices of the non-options in ARGV after they are moved.  */

static void

exchange (char **argv, struct _getopt_data *d)

{

  int bottom = d->__first_nonopt;

  int middle = d->__last_nonopt;

  int top = d->optind;

  char *tem;

  /* Exchange the shorter segment with the far end of the longer segment.

     That puts the shorter segment into the right place.

     It leaves the longer segment in the right place overall,

     but it consists of two parts that need to be swapped next.  */

#if defined _LIBC && defined USE_NONOPTION_FLAGS

  /* First make sure the handling of the `__getopt_nonoption_flags'

     string can work normally.  Our top argument must be in the range

     of the string.  */

  if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len)

    {

      /* We must extend the array.  The user plays games with us and

	 presents new arguments.  */

      char *new_str = malloc (top + 1);

      if (new_str == NULL)

	d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0;

      else

	{

	  memset (__mempcpy (new_str, __getopt_nonoption_flags,

			     d->__nonoption_flags_max_len),

		  '\0', top + 1 - d->__nonoption_flags_max_len);

	  d->__nonoption_flags_max_len = top + 1;

	  __getopt_nonoption_flags = new_str;

	}

    }

#endif

  while (top > middle && middle > bottom)

    {

      if (top - middle > middle - bottom)

	{

	  /* Bottom segment is the short one.  */

	  int len = middle - bottom;

	  int i;

	  /* Swap it with the top part of the top segment.  */

	  for (i = 0; i < len; i++)

	    {

	      tem = argv[bottom + i];

	      argv[bottom + i] = argv[top - (middle - bottom) + i];

	      argv[top - (middle - bottom) + i] = tem;

	      SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);

	    }

	  /* Exclude the moved bottom segment from further swapping.  */

	  top -= len;

	}

      else

	{

	  /* Top segment is the short one.  */

	  int len = top - middle;

	  int i;

	  /* Swap it with the bottom part of the bottom segment.  */

	  for (i = 0; i < len; i++)

	    {

	      tem = argv[bottom + i];

	      argv[bottom + i] = argv[middle + i];

	      argv[middle + i] = tem;

	      SWAP_FLAGS (bottom + i, middle + i);

	    }

	  /* Exclude the moved top segment from further swapping.  */

	  bottom += len;

	}

    }

  /* Update records for the slots the non-options now occupy.  */

  d->__first_nonopt += (d->optind - d->__last_nonopt);

  d->__last_nonopt = d->optind;

}

/* Initialize the internal data when the first call is made.  */

static const char *

_getopt_initialize (int argc, char *const *argv, const char *optstring,

		    struct _getopt_data *d, int posixly_correct)

{

  /* Start processing options with ARGV-element 1 (since ARGV-element 0

     is the program name); the sequence of previously skipped

     non-option ARGV-elements is empty.  */

  d->__first_nonopt = d->__last_nonopt = d->optind;

  d->__nextchar = NULL;

  d->__posixly_correct = posixly_correct | !!getenv ("POSIXLY_CORRECT");

  /* Determine how to handle the ordering of options and nonoptions.  */

  if (optstring[0] == '-')

    {

      d->__ordering = RETURN_IN_ORDER;

      ++optstring;

    }

  else if (optstring[0] == '+')

    {

      d->__ordering = REQUIRE_ORDER;

      ++optstring;

    }

  else if (d->__posixly_correct)

    d->__ordering = REQUIRE_ORDER;

  else

    d->__ordering = PERMUTE;

#if defined _LIBC && defined USE_NONOPTION_FLAGS

  if (!d->__posixly_correct

      && argc == __libc_argc && argv == __libc_argv)

    {

      if (d->__nonoption_flags_max_len == 0)

	{

	  if (__getopt_nonoption_flags == NULL

	      || __getopt_nonoption_flags[0] == '\0')

	    d->__nonoption_flags_max_len = -1;

	  else

	    {

	      const char *orig_str = __getopt_nonoption_flags;

	      int len = d->__nonoption_flags_max_len = strlen (orig_str);

	      if (d->__nonoption_flags_max_len < argc)

		d->__nonoption_flags_max_len = argc;

	      __getopt_nonoption_flags =

		(char *) malloc (d->__nonoption_flags_max_len);

	      if (__getopt_nonoption_flags == NULL)

		d->__nonoption_flags_max_len = -1;

	      else

		memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),

			'\0', d->__nonoption_flags_max_len - len);

	    }

	}

      d->__nonoption_flags_len = d->__nonoption_flags_max_len;

    }

  else

    d->__nonoption_flags_len = 0;

#endif

  return optstring;

}

/* Scan elements of ARGV (whose length is ARGC) for option characters

   given in OPTSTRING.

   If an element of ARGV starts with '-', and is not exactly "-" or "--",

   then it is an option element.  The characters of this element

   (aside from the initial '-') are option characters.  If `getopt'

   is called repeatedly, it returns successively each of the option characters

   from each of the option elements.

   If `getopt' finds another option character, it returns that character,

   updating `optind' and `nextchar' so that the next call to `getopt' can

   resume the scan with the following option character or ARGV-element.

   If there are no more option characters, `getopt' returns -1.

   Then `optind' is the index in ARGV of the first ARGV-element

   that is not an option.  (The ARGV-elements have been permuted

   so that those that are not options now come last.)

   OPTSTRING is a string containing the legitimate option characters.

   If an option character is seen that is not listed in OPTSTRING,

   return '?' after printing an error message.  If you set `opterr' to

   zero, the error message is suppressed but we still return '?'.

   If a char in OPTSTRING is followed by a colon, that means it wants an arg,

   so the following text in the same ARGV-element, or the text of the following

   ARGV-element, is returned in `optarg'.  Two colons mean an option that

   wants an optional arg; if there is text in the current ARGV-element,

   it is returned in `optarg', otherwise `optarg' is set to zero.

   If OPTSTRING starts with `-' or `+', it requests different methods of

   handling the non-option ARGV-elements.

   See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.

   Long-named options begin with `--' instead of `-'.

   Their names may be abbreviated as long as the abbreviation is unique

   or is an exact match for some defined option.  If they have an

   argument, it follows the option name in the same ARGV-element, separated

   from the option name by a `=', or else the in next ARGV-element.

   When `getopt' finds a long-named option, it returns 0 if that option's

   `flag' field is nonzero, the value of the option's `val' field

   if the `flag' field is zero.

   The elements of ARGV aren't really const, because we permute them.

   But we pretend they're const in the prototype to be compatible

   with other systems.

   LONGOPTS is a vector of `struct option' terminated by an

   element containing a name which is zero.

   LONGIND returns the index in LONGOPT of the long-named option found.

   It is only valid when a long-named option has been found by the most

   recent call.

   If LONG_ONLY is nonzero, '-' as well as '--' can introduce

   long-named options.  */

int

_getopt_internal_r (int argc, char *const *argv, const char *optstring,

		    const struct option *longopts, int *longind,

		    int long_only, struct _getopt_data *d, int posixly_correct)

{

  int print_errors = d->opterr;

  if (argc < 1)

    return -1;

  d->optarg = NULL;

  if (d->optind == 0 || !d->__initialized)

    {

      if (d->optind == 0)

	d->optind = 1;	/* Don't scan ARGV[0], the program name.  */

      optstring = _getopt_initialize (argc, argv, optstring, d,

				      posixly_correct);

      d->__initialized = 1;

    }

  else if (optstring[0] == '-' || optstring[0] == '+')

    optstring++;

  if (optstring[0] == ':')

    print_errors = 0;

  /* Test whether ARGV[optind] points to a non-option argument.

     Either it does not have option syntax, or there is an environment flag

     from the shell indicating it is not an option.  The later information

     is only used when the used in the GNU libc.  */

#if defined _LIBC && defined USE_NONOPTION_FLAGS

# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \

		      || (d->optind < d->__nonoption_flags_len		      \

			  && __getopt_nonoption_flags[d->optind] == '1'))

#else

# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')

#endif

  if (d->__nextchar == NULL || *d->__nextchar == '\0')

    {

      /* Advance to the next ARGV-element.  */

      /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been

	 moved back by the user (who may also have changed the arguments).  */

      if (d->__last_nonopt > d->optind)

	d->__last_nonopt = d->optind;

      if (d->__first_nonopt > d->optind)

	d->__first_nonopt = d->optind;

      if (d->__ordering == PERMUTE)

	{

	  /* If we have just processed some options following some non-options,

	     exchange them so that the options come first.  */

	  if (d->__first_nonopt != d->__last_nonopt

	      && d->__last_nonopt != d->optind)

	    exchange ((char **) argv, d);

	  else if (d->__last_nonopt != d->optind)

	    d->__first_nonopt = d->optind;

	  /* Skip any additional non-options

	     and extend the range of non-options previously skipped.  */

	  while (d->optind < argc && NONOPTION_P)

	    d->optind++;

	  d->__last_nonopt = d->optind;

	}

      /* The special ARGV-element `--' means premature end of options.

	 Skip it like a null option,

	 then exchange with previous non-options as if it were an option,

	 then skip everything else like a non-option.  */

      if (d->optind != argc && !strcmp (argv[d->optind], "--"))

	{

	  d->optind++;

	  if (d->__first_nonopt != d->__last_nonopt

	      && d->__last_nonopt != d->optind)

	    exchange ((char **) argv, d);

	  else if (d->__first_nonopt == d->__last_nonopt)

	    d->__first_nonopt = d->optind;

	  d->__last_nonopt = argc;

	  d->optind = argc;

	}

      /* If we have done all the ARGV-elements, stop the scan

	 and back over any non-options that we skipped and permuted.  */

      if (d->optind == argc)

	{

	  /* Set the next-arg-index to point at the non-options

	     that we previously skipped, so the caller will digest them.  */

	  if (d->__first_nonopt != d->__last_nonopt)

	    d->optind = d->__first_nonopt;

	  return -1;

	}

      /* If we have come to a non-option and did not permute it,

	 either stop the scan or describe it to the caller and pass it by.  */

      if (NONOPTION_P)

	{

	  if (d->__ordering == REQUIRE_ORDER)

	    return -1;

	  d->optarg = argv[d->optind++];

	  return 1;

	}

      /* We have found another option-ARGV-element.

	 Skip the initial punctuation.  */

      d->__nextchar = (argv[d->optind] + 1

		  + (longopts != NULL && argv[d->optind][1] == '-'));

    }

  /* Decode the current option-ARGV-element.  */

  /* Check whether the ARGV-element is a long option.

     If long_only and the ARGV-element has the form "-f", where f is

     a valid short option, don't consider it an abbreviated form of

     a long option that starts with f.  Otherwise there would be no

     way to give the -f short option.

     On the other hand, if there's a long option "fubar" and

     the ARGV-element is "-fu", do consider that an abbreviation of

     the long option, just like "--fu", and not "-f" with arg "u".

     This distinction seems to be the most useful approach.  */

  if (longopts != NULL

      && (argv[d->optind][1] == '-'

	  || (long_only && (argv[d->optind][2]

			    || !strchr (optstring, argv[d->optind][1])))))

    {

      char *nameend;

      unsigned int namelen;

      const struct option *p;

      const struct option *pfound = NULL;

      struct option_list

      {

	const struct option *p;

	struct option_list *next;

      } *ambig_list = NULL;

      int exact = 0;

      int indfound = -1;

      int option_index;

      for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)

	/* Do nothing.  */ ;

      namelen = nameend - d->__nextchar;

      /* Test all long options for either exact match

	 or abbreviated matches.  */

      for (p = longopts, option_index = 0; p->name; p++, option_index++)

	if (!strncmp (p->name, d->__nextchar, namelen))

	  {

	    if (namelen == (unsigned int) strlen (p->name))

	      {

		/* Exact match found.  */

		pfound = p;

		indfound = option_index;

		exact = 1;

		break;

	      }

	    else if (pfound == NULL)

	      {

		/* First nonexact match found.  */

		pfound = p;

		indfound = option_index;

	      }

	    else if (long_only

		     || pfound->has_arg != p->has_arg

		     || pfound->flag != p->flag

		     || pfound->val != p->val)

	      {

		/* Second or later nonexact match found.  */

		struct option_list *newp = alloca (sizeof (*newp));

		newp->p = p;

		newp->next = ambig_list;

		ambig_list = newp;

	      }

	  }

      if (ambig_list != NULL && !exact)

	{

	  if (print_errors)

	    {

	      struct option_list first;

	      first.p = pfound;

	      first.next = ambig_list;

	      ambig_list = &first;

#if defined _LIBC

	      char *buf = NULL;

	      size_t buflen = 0;

	      FILE *fp = open_memstream (&buf, &buflen);

	      if (fp != NULL)

		{

		  fprintf (fp,

			   _("%s: option '%s' is ambiguous; possibilities:"),

			   argv[0], argv[d->optind]);

		  do

		    {

		      fprintf (fp, " '--%s'", ambig_list->p->name);

		      ambig_list = ambig_list->next;

		    }

		  while (ambig_list != NULL);

		  fputc_unlocked ('\n', fp);

		  if (__builtin_expect (fclose (fp) != EOF, 1))

		    {

		      _IO_flockfile (stderr);

		      int old_flags2 = ((_IO_FILE *) stderr)->_flags2;

		      ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;

		      __fxprintf (NULL, "%s", buf);

		      ((_IO_FILE *) stderr)->_flags2 = old_flags2;

		      _IO_funlockfile (stderr);

		      free (buf);

		    }

		}

#else

	      fprintf (stderr,

		       _("%s: option '%s' is ambiguous; possibilities:"),

		       argv[0], argv[d->optind]);

	      do

		{

		  fprintf (stderr, " '--%s'", ambig_list->p->name);

		  ambig_list = ambig_list->next;

		}

	      while (ambig_list != NULL);

	      fputc ('\n', stderr);

#endif

	    }

	  d->__nextchar += strlen (d->__nextchar);

	  d->optind++;

	  d->optopt = 0;

	  return '?';

	}

      if (pfound != NULL)

	{

	  option_index = indfound;

	  d->optind++;

	  if (*nameend)

	    {

	      /* Don't test has_arg with >, because some C compilers don't

		 allow it to be used on enums.  */

	      if (pfound->has_arg)

		d->optarg = nameend + 1;

	      else

		{

		  if (print_errors)

		    {

#if defined _LIBC

		      char *buf;

		      int n;

#endif

		      if (argv[d->optind - 1][1] == '-')

			{

			  /* --option */

#if defined _LIBC

			  n = __asprintf (&buf, _("\

%s: option '--%s' doesn't allow an argument\n"),

					  argv[0], pfound->name);

#else

			  fprintf (stderr, _("\

%s: option '--%s' doesn't allow an argument\n"),

				   argv[0], pfound->name);

#endif

			}

		      else

			{

			  /* +option or -option */

#if defined _LIBC

			  n = __asprintf (&buf, _("\

%s: option '%c%s' doesn't allow an argument\n"),

					  argv[0], argv[d->optind - 1][0],

					  pfound->name);

#else

			  fprintf (stderr, _("\

%s: option '%c%s' doesn't allow an argument\n"),

				   argv[0], argv[d->optind - 1][0],

				   pfound->name);

#endif

			}

#if defined _LIBC

		      if (n >= 0)

			{

			  _IO_flockfile (stderr);

			  int old_flags2 = ((_IO_FILE *) stderr)->_flags2;

			  ((_IO_FILE *) stderr)->_flags2

			    |= _IO_FLAGS2_NOTCANCEL;

			  __fxprintf (NULL, "%s", buf);

			  ((_IO_FILE *) stderr)->_flags2 = old_flags2;

			  _IO_funlockfile (stderr);

			  free (buf);

			}

#endif

		    }

		  d->__nextchar += strlen (d->__nextchar);

		  d->optopt = pfound->val;

		  return '?';

		}

	    }

	  else if (pfound->has_arg == 1)

	    {

	      if (d->optind < argc)

		d->optarg = argv[d->optind++];

	      else

		{

		  if (print_errors)

		    {

#if defined _LIBC

		      char *buf;

		      if (__asprintf (&buf, _("\

%s: option '--%s' requires an argument\n"),

				      argv[0], pfound->name) >= 0)

			{

			  _IO_flockfile (stderr);

			  int old_flags2 = ((_IO_FILE *) stderr)->_flags2;

			  ((_IO_FILE *) stderr)->_flags2

			    |= _IO_FLAGS2_NOTCANCEL;

			  __fxprintf (NULL, "%s", buf);

			  ((_IO_FILE *) stderr)->_flags2 = old_flags2;

			  _IO_funlockfile (stderr);

			  free (buf);

			}

#else

		      fprintf (stderr,

			       _("%s: option '--%s' requires an argument\n"),

			       argv[0], pfound->name);

#endif

		    }

		  d->__nextchar += strlen (d->__nextchar);

		  d->optopt = pfound->val;

		  return optstring[0] == ':' ? ':' : '?';

		}

	    }

	  d->__nextchar += strlen (d->__nextchar);

	  if (longind != NULL)

	    *longind = option_index;

	  if (pfound->flag)

	    {

	      *(pfound->flag) = pfound->val;

	      return 0;

	    }

	  return pfound->val;

	}

      /* Can't find it as a long option.  If this is not getopt_long_only,

	 or the option starts with '--' or is not a valid short

	 option, then it's an error.

	 Otherwise interpret it as a short option.  */

      if (!long_only || argv[d->optind][1] == '-'

	  || strchr (optstring, *d->__nextchar) == NULL)

	{

	  if (print_errors)

	    {

#if defined _LIBC

	      char *buf;

	      int n;

#endif

	      if (argv[d->optind][1] == '-')

		{

		  /* --option */

#if defined _LIBC

		  n = __asprintf (&buf, _("%s: unrecognized option '--%s'\n"),

				  argv[0], d->__nextchar);

#else

		  fprintf (stderr, _("%s: unrecognized option '--%s'\n"),

			   argv[0], d->__nextchar);

#endif

		}

	      else

		{

		  /* +option or -option */

#if defined _LIBC

		  n = __asprintf (&buf, _("%s: unrecognized option '%c%s'\n"),

				  argv[0], argv[d->optind][0], d->__nextchar);

#else

		  fprintf (stderr, _("%s: unrecognized option '%c%s'\n"),

			   argv[0], argv[d->optind][0], d->__nextchar);

#endif

		}

#if defined _LIBC

	      if (n >= 0)

		{

		  _IO_flockfile (stderr);

		  int old_flags2 = ((_IO_FILE *) stderr)->_flags2;

		  ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;

		  __fxprintf (NULL, "%s", buf);

		  ((_IO_FILE *) stderr)->_flags2 = old_flags2;

		  _IO_funlockfile (stderr);

		  free (buf);

		}

#endif

	    }

	  d->__nextchar = (char *) "";

	  d->optind++;

	  d->optopt = 0;

	  return '?';

	}

    }

  /* Look at and handle the next short option-character.  */

  {

    char c = *d->__nextchar++;

    char *temp = strchr (optstring, c);

    /* Increment `optind' when we start to process its last character.  */

    if (*d->__nextchar == '\0')

      ++d->optind;

    if (temp == NULL || c == ':' || c == ';')

      {

	if (print_errors)

	  {

#if defined _LIBC

	    char *buf;

	    int n;

#endif

#if defined _LIBC

	    n = __asprintf (&buf, _("%s: invalid option -- '%c'\n"),

			    argv[0], c);

#else

	    fprintf (stderr, _("%s: invalid option -- '%c'\n"), argv[0], c);

#endif

#if defined _LIBC

	    if (n >= 0)

	      {

		_IO_flockfile (stderr);

		int old_flags2 = ((_IO_FILE *) stderr)->_flags2;

		((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;

		__fxprintf (NULL, "%s", buf);

		((_IO_FILE *) stderr)->_flags2 = old_flags2;

		_IO_funlockfile (stderr);

		free (buf);

	      }

#endif

	  }

	d->optopt = c;

	return '?';

      }

    /* Convenience. Treat POSIX -W foo same as long option --foo */

    if (temp[0] == 'W' && temp[1] == ';')

      {

	char *nameend;

	const struct option *p;

	const struct option *pfound = NULL;

	int exact = 0;

	int ambig = 0;

	int indfound = 0;

	int option_index;