2 NOTE: The canonical source of this file is maintained with the GNU
3 C Library. Bugs can be reported to bug-glibc@gnu.org.
5 Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99
6 Free Software Foundation, Inc.
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 3, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
22 Ditto for AIX 3.2 and <stdlib.h>. */
30 # if !defined __STDC__ || !__STDC__
31 /* This is a separate conditional since some stdc systems
32 reject `defined (const)'. */
41 /* Comment out all this code if we are using the GNU C Library, and are not
42 actually compiling the library itself. This code is part of the GNU C
43 Library, but also included in many other GNU distributions. Compiling
44 and linking in this code is a waste when using the GNU C library
45 (especially if it is a shared library). Rather than having every GNU
46 program understand `configure --with-gnu-libc' and omit the object files,
47 it is simpler to just do this in the source for each such file. */
49 #define GETOPT_INTERFACE_VERSION 2
50 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
51 # include <gnu-versions.h>
52 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
60 /* This needs to come after some library #include
61 to get __GNU_LIBRARY__ defined. */
62 #ifdef __GNU_LIBRARY__
63 /* Don't include stdlib.h for non-GNU C libraries because some of them
64 contain conflicting prototypes for getopt. */
67 #endif /* GNU C library. */
71 # if HAVE_STRING_H - 0
77 /* This is for other GNU distributions with internationalized messages.
78 When compiling libc, the _ macro is predefined. */
79 # ifdef HAVE_LIBINTL_H
81 # define _(msgid) gettext (msgid)
83 # define _(msgid) (msgid)
87 /* This version of `getopt' appears to the caller like standard Unix `getopt'
88 but it behaves differently for the user, since it allows the user
89 to intersperse the options with the other arguments.
91 As `getopt' works, it permutes the elements of ARGV so that,
92 when it is done, all the options precede everything else. Thus
93 all application programs are extended to handle flexible argument order.
95 Setting the environment variable POSIXLY_CORRECT disables permutation.
96 Then the behavior is completely standard.
98 GNU application programs can use a third alternative mode in which
99 they can distinguish the relative order of options and other arguments. */
103 /* For communication from `getopt' to the caller.
104 When `getopt' finds an option that takes an argument,
105 the argument value is returned here.
106 Also, when `ordering' is RETURN_IN_ORDER,
107 each non-option ARGV-element is returned here. */
111 /* Index in ARGV of the next element to be scanned.
112 This is used for communication to and from the caller
113 and for communication between successive calls to `getopt'.
115 On entry to `getopt', zero means this is the first call; initialize.
117 When `getopt' returns -1, this is the index of the first of the
118 non-option elements that the caller should itself scan.
120 Otherwise, `optind' communicates from one call to the next
121 how much of ARGV has been scanned so far. */
123 /* 1003.2 says this must be 1 before any call. */
126 /* Formerly, initialization of getopt depended on optind==0, which
127 causes problems with re-calling getopt as programs generally don't
130 int __getopt_initialized;
132 /* The next char to be scanned in the option-element
133 in which the last option character we returned was found.
134 This allows us to pick up the scan where we left off.
136 If this is zero, or a null string, it means resume the scan
137 by advancing to the next ARGV-element. */
139 static char *nextchar;
141 /* Callers store zero here to inhibit the error message
142 for unrecognized options. */
146 /* Set to an option character which was unrecognized.
147 This must be initialized on some systems to avoid linking in the
148 system's own getopt implementation. */
152 /* Describe how to deal with options that follow non-option ARGV-elements.
154 If the caller did not specify anything,
155 the default is REQUIRE_ORDER if the environment variable
156 POSIXLY_CORRECT is defined, PERMUTE otherwise.
158 REQUIRE_ORDER means don't recognize them as options;
159 stop option processing when the first non-option is seen.
160 This is what Unix does.
161 This mode of operation is selected by either setting the environment
162 variable POSIXLY_CORRECT, or using `+' as the first character
163 of the list of option characters.
165 PERMUTE is the default. We permute the contents of ARGV as we scan,
166 so that eventually all the non-options are at the end. This allows options
167 to be given in any order, even with programs that were not written to
170 RETURN_IN_ORDER is an option available to programs that were written
171 to expect options and other ARGV-elements in any order and that care about
172 the ordering of the two. We describe each non-option ARGV-element
173 as if it were the argument of an option with character code 1.
174 Using `-' as the first character of the list of option characters
175 selects this mode of operation.
177 The special argument `--' forces an end of option-scanning regardless
178 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
179 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
183 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
186 /* Value of POSIXLY_CORRECT environment variable. */
187 static char *posixly_correct;
189 #ifdef __GNU_LIBRARY__
190 /* We want to avoid inclusion of string.h with non-GNU libraries
191 because there are many ways it can cause trouble.
192 On some systems, it contains special magic macros that don't work
195 # define my_index strchr
200 /* Avoid depending on library functions or files
201 whose names are inconsistent. */
204 extern char *getenv ();
221 /* If using GCC, we can safely declare strlen this way.
222 If not using GCC, it is ok not to declare it. */
224 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
225 That was relevant to code that was here before. */
226 # if (!defined __STDC__ || !__STDC__) && !defined strlen
227 /* gcc with -traditional declares the built-in strlen to return int,
228 and has done so at least since version 2.4.5. -- rms. */
229 extern int strlen (const char *);
230 # endif /* not __STDC__ */
231 #endif /* __GNUC__ */
233 #endif /* not __GNU_LIBRARY__ */
235 /* Handle permutation of arguments. */
237 /* Describe the part of ARGV that contains non-options that have
238 been skipped. `first_nonopt' is the index in ARGV of the first of them;
239 `last_nonopt' is the index after the last of them. */
241 static int first_nonopt;
242 static int last_nonopt;
245 /* Bash 2.0 gives us an environment variable containing flags
246 indicating ARGV elements that should not be considered arguments. */
248 /* Defined in getopt_init.c */
249 extern char *__getopt_nonoption_flags;
251 static int nonoption_flags_max_len;
252 static int nonoption_flags_len;
254 static int original_argc;
255 static char *const *original_argv;
257 /* Make sure the environment variable bash 2.0 puts in the environment
258 is valid for the getopt call we must make sure that the ARGV passed
259 to getopt is that one passed to the process. */
261 __attribute__ ((unused))
262 store_args_and_env (int argc, char *const *argv)
264 /* XXX This is no good solution. We should rather copy the args so
265 that we can compare them later. But we must not use malloc(3). */
266 original_argc = argc;
267 original_argv = argv;
269 # ifdef text_set_element
270 text_set_element (__libc_subinit, store_args_and_env);
271 # endif /* text_set_element */
273 # define SWAP_FLAGS(ch1, ch2) \
274 if (nonoption_flags_len > 0) \
276 char __tmp = __getopt_nonoption_flags[ch1]; \
277 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
278 __getopt_nonoption_flags[ch2] = __tmp; \
281 # define SWAP_FLAGS(ch1, ch2)
284 /* Exchange two adjacent subsequences of ARGV.
285 One subsequence is elements [first_nonopt,last_nonopt)
286 which contains all the non-options that have been skipped so far.
287 The other is elements [last_nonopt,optind), which contains all
288 the options processed since those non-options were skipped.
290 `first_nonopt' and `last_nonopt' are relocated so that they describe
291 the new indices of the non-options in ARGV after they are moved. */
293 #if defined __STDC__ && __STDC__
294 static void exchange (char **);
301 int bottom = first_nonopt;
302 int middle = last_nonopt;
306 /* Exchange the shorter segment with the far end of the longer segment.
307 That puts the shorter segment into the right place.
308 It leaves the longer segment in the right place overall,
309 but it consists of two parts that need to be swapped next. */
312 /* First make sure the handling of the `__getopt_nonoption_flags'
313 string can work normally. Our top argument must be in the range
315 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
317 /* We must extend the array. The user plays games with us and
318 presents new arguments. */
319 char *new_str = malloc (top + 1);
321 nonoption_flags_len = nonoption_flags_max_len = 0;
324 memset (__mempcpy (new_str, __getopt_nonoption_flags,
325 nonoption_flags_max_len),
326 '\0', top + 1 - nonoption_flags_max_len);
327 nonoption_flags_max_len = top + 1;
328 __getopt_nonoption_flags = new_str;
333 while (top > middle && middle > bottom)
335 if (top - middle > middle - bottom)
337 /* Bottom segment is the short one. */
338 int len = middle - bottom;
341 /* Swap it with the top part of the top segment. */
342 for (i = 0; i < len; i++)
344 tem = argv[bottom + i];
345 argv[bottom + i] = argv[top - (middle - bottom) + i];
346 argv[top - (middle - bottom) + i] = tem;
347 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
349 /* Exclude the moved bottom segment from further swapping. */
354 /* Top segment is the short one. */
355 int len = top - middle;
358 /* Swap it with the bottom part of the bottom segment. */
359 for (i = 0; i < len; i++)
361 tem = argv[bottom + i];
362 argv[bottom + i] = argv[middle + i];
363 argv[middle + i] = tem;
364 SWAP_FLAGS (bottom + i, middle + i);
366 /* Exclude the moved top segment from further swapping. */
371 /* Update records for the slots the non-options now occupy. */
373 first_nonopt += (optind - last_nonopt);
374 last_nonopt = optind;
377 /* Initialize the internal data when the first call is made. */
379 #if defined __STDC__ && __STDC__
380 static const char *_getopt_initialize (int, char *const *, const char *);
383 _getopt_initialize (argc, argv, optstring)
386 const char *optstring;
388 /* Start processing options with ARGV-element 1 (since ARGV-element 0
389 is the program name); the sequence of previously skipped
390 non-option ARGV-elements is empty. */
392 first_nonopt = last_nonopt = optind;
396 posixly_correct = getenv ("POSIXLY_CORRECT");
398 /* Determine how to handle the ordering of options and nonoptions. */
400 if (optstring[0] == '-')
402 ordering = RETURN_IN_ORDER;
405 else if (optstring[0] == '+')
407 ordering = REQUIRE_ORDER;
410 else if (posixly_correct != NULL)
411 ordering = REQUIRE_ORDER;
416 if (posixly_correct == NULL
417 && argc == original_argc && argv == original_argv)
419 if (nonoption_flags_max_len == 0)
421 if (__getopt_nonoption_flags == NULL
422 || __getopt_nonoption_flags[0] == '\0')
423 nonoption_flags_max_len = -1;
426 const char *orig_str = __getopt_nonoption_flags;
427 int len = nonoption_flags_max_len = strlen (orig_str);
428 if (nonoption_flags_max_len < argc)
429 nonoption_flags_max_len = argc;
430 __getopt_nonoption_flags =
431 (char *) malloc (nonoption_flags_max_len);
432 if (__getopt_nonoption_flags == NULL)
433 nonoption_flags_max_len = -1;
435 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
436 '\0', nonoption_flags_max_len - len);
439 nonoption_flags_len = nonoption_flags_max_len;
442 nonoption_flags_len = 0;
448 /* Scan elements of ARGV (whose length is ARGC) for option characters
451 If an element of ARGV starts with '-', and is not exactly "-" or "--",
452 then it is an option element. The characters of this element
453 (aside from the initial '-') are option characters. If `getopt'
454 is called repeatedly, it returns successively each of the option characters
455 from each of the option elements.
457 If `getopt' finds another option character, it returns that character,
458 updating `optind' and `nextchar' so that the next call to `getopt' can
459 resume the scan with the following option character or ARGV-element.
461 If there are no more option characters, `getopt' returns -1.
462 Then `optind' is the index in ARGV of the first ARGV-element
463 that is not an option. (The ARGV-elements have been permuted
464 so that those that are not options now come last.)
466 OPTSTRING is a string containing the legitimate option characters.
467 If an option character is seen that is not listed in OPTSTRING,
468 return '?' after printing an error message. If you set `opterr' to
469 zero, the error message is suppressed but we still return '?'.
471 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
472 so the following text in the same ARGV-element, or the text of the following
473 ARGV-element, is returned in `optarg'. Two colons mean an option that
474 wants an optional arg; if there is text in the current ARGV-element,
475 it is returned in `optarg', otherwise `optarg' is set to zero.
477 If OPTSTRING starts with `-' or `+', it requests different methods of
478 handling the non-option ARGV-elements.
479 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
481 Long-named options begin with `--' instead of `-'.
482 Their names may be abbreviated as long as the abbreviation is unique
483 or is an exact match for some defined option. If they have an
484 argument, it follows the option name in the same ARGV-element, separated
485 from the option name by a `=', or else the in next ARGV-element.
486 When `getopt' finds a long-named option, it returns 0 if that option's
487 `flag' field is nonzero, the value of the option's `val' field
488 if the `flag' field is zero.
490 The elements of ARGV aren't really const, because we permute them.
491 But we pretend they're const in the prototype to be compatible
494 LONGOPTS is a vector of `struct option' terminated by an
495 element containing a name which is zero.
497 LONGIND returns the index in LONGOPT of the long-named option found.
498 It is only valid when a long-named option has been found by the most
501 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
502 long-named options. */
505 _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
508 const char *optstring;
509 const struct option *longopts;
515 if (optind == 0 || !__getopt_initialized)
518 optind = 1; /* Don't scan ARGV[0], the program name. */
519 optstring = _getopt_initialize (argc, argv, optstring);
520 __getopt_initialized = 1;
523 /* Test whether ARGV[optind] points to a non-option argument.
524 Either it does not have option syntax, or there is an environment flag
525 from the shell indicating it is not an option. The later information
526 is only used when the used in the GNU libc. */
528 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
529 || (optind < nonoption_flags_len \
530 && __getopt_nonoption_flags[optind] == '1'))
532 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
535 if (nextchar == NULL || *nextchar == '\0')
537 /* Advance to the next ARGV-element. */
539 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
540 moved back by the user (who may also have changed the arguments). */
541 if (last_nonopt > optind)
542 last_nonopt = optind;
543 if (first_nonopt > optind)
544 first_nonopt = optind;
546 if (ordering == PERMUTE)
548 /* If we have just processed some options following some non-options,
549 exchange them so that the options come first. */
551 if (first_nonopt != last_nonopt && last_nonopt != optind)
552 exchange ((char **) argv);
553 else if (last_nonopt != optind)
554 first_nonopt = optind;
556 /* Skip any additional non-options
557 and extend the range of non-options previously skipped. */
559 while (optind < argc && NONOPTION_P)
561 last_nonopt = optind;
564 /* The special ARGV-element `--' means premature end of options.
565 Skip it like a null option,
566 then exchange with previous non-options as if it were an option,
567 then skip everything else like a non-option. */
569 if (optind != argc && !strcmp (argv[optind], "--"))
573 if (first_nonopt != last_nonopt && last_nonopt != optind)
574 exchange ((char **) argv);
575 else if (first_nonopt == last_nonopt)
576 first_nonopt = optind;
582 /* If we have done all the ARGV-elements, stop the scan
583 and back over any non-options that we skipped and permuted. */
587 /* Set the next-arg-index to point at the non-options
588 that we previously skipped, so the caller will digest them. */
589 if (first_nonopt != last_nonopt)
590 optind = first_nonopt;
594 /* If we have come to a non-option and did not permute it,
595 either stop the scan or describe it to the caller and pass it by. */
599 if (ordering == REQUIRE_ORDER)
601 optarg = argv[optind++];
605 /* We have found another option-ARGV-element.
606 Skip the initial punctuation. */
608 nextchar = (argv[optind] + 1
609 + (longopts != NULL && argv[optind][1] == '-'));
612 /* Decode the current option-ARGV-element. */
614 /* Check whether the ARGV-element is a long option.
616 If long_only and the ARGV-element has the form "-f", where f is
617 a valid short option, don't consider it an abbreviated form of
618 a long option that starts with f. Otherwise there would be no
619 way to give the -f short option.
621 On the other hand, if there's a long option "fubar" and
622 the ARGV-element is "-fu", do consider that an abbreviation of
623 the long option, just like "--fu", and not "-f" with arg "u".
625 This distinction seems to be the most useful approach. */
628 && (argv[optind][1] == '-'
629 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
632 const struct option *p;
633 const struct option *pfound = NULL;
639 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
642 /* Test all long options for either exact match
643 or abbreviated matches. */
644 for (p = longopts, option_index = 0; p->name; p++, option_index++)
645 if (!strncmp (p->name, nextchar, nameend - nextchar))
647 if ((unsigned int) (nameend - nextchar)
648 == (unsigned int) strlen (p->name))
650 /* Exact match found. */
652 indfound = option_index;
656 else if (pfound == NULL)
658 /* First nonexact match found. */
660 indfound = option_index;
663 /* Second or later nonexact match found. */
670 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
671 argv[0], argv[optind]);
672 nextchar += strlen (nextchar);
680 option_index = indfound;
684 /* Don't test has_arg with >, because some C compilers don't
685 allow it to be used on enums. */
687 optarg = nameend + 1;
692 if (argv[optind - 1][1] == '-')
695 _("%s: option `--%s' doesn't allow an argument\n"),
696 argv[0], pfound->name);
698 /* +option or -option */
700 _("%s: option `%c%s' doesn't allow an argument\n"),
701 argv[0], argv[optind - 1][0], pfound->name);
704 nextchar += strlen (nextchar);
706 optopt = pfound->val;
710 else if (pfound->has_arg == 1)
713 optarg = argv[optind++];
718 _("%s: option `%s' requires an argument\n"),
719 argv[0], argv[optind - 1]);
720 nextchar += strlen (nextchar);
721 optopt = pfound->val;
722 return optstring[0] == ':' ? ':' : '?';
725 nextchar += strlen (nextchar);
727 *longind = option_index;
730 *(pfound->flag) = pfound->val;
736 /* Can't find it as a long option. If this is not getopt_long_only,
737 or the option starts with '--' or is not a valid short
738 option, then it's an error.
739 Otherwise interpret it as a short option. */
740 if (!long_only || argv[optind][1] == '-'
741 || my_index (optstring, *nextchar) == NULL)
745 if (argv[optind][1] == '-')
747 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
750 /* +option or -option */
751 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
752 argv[0], argv[optind][0], nextchar);
754 nextchar = (char *) "";
761 /* Look at and handle the next short option-character. */
764 char c = *nextchar++;
765 char *temp = my_index (optstring, c);
767 /* Increment `optind' when we start to process its last character. */
768 if (*nextchar == '\0')
771 if (temp == NULL || c == ':')
776 /* 1003.2 specifies the format of this message. */
777 fprintf (stderr, _("%s: illegal option -- %c\n"),
780 fprintf (stderr, _("%s: invalid option -- %c\n"),
786 /* Convenience. Treat POSIX -W foo same as long option --foo */
787 if (temp[0] == 'W' && temp[1] == ';')
790 const struct option *p;
791 const struct option *pfound = NULL;
797 /* This is an option that requires an argument. */
798 if (*nextchar != '\0')
801 /* If we end this ARGV-element by taking the rest as an arg,
802 we must advance to the next element now. */
805 else if (optind == argc)
809 /* 1003.2 specifies the format of this message. */
810 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
814 if (optstring[0] == ':')
821 /* We already incremented `optind' once;
822 increment it again when taking next ARGV-elt as argument. */
823 optarg = argv[optind++];
825 /* optarg is now the argument, see if it's in the
826 table of longopts. */
828 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
831 /* Test all long options for either exact match
832 or abbreviated matches. */
833 for (p = longopts, option_index = 0; p->name; p++, option_index++)
834 if (!strncmp (p->name, nextchar, nameend - nextchar))
836 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
838 /* Exact match found. */
840 indfound = option_index;
844 else if (pfound == NULL)
846 /* First nonexact match found. */
848 indfound = option_index;
851 /* Second or later nonexact match found. */
857 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
858 argv[0], argv[optind]);
859 nextchar += strlen (nextchar);
865 option_index = indfound;
868 /* Don't test has_arg with >, because some C compilers don't
869 allow it to be used on enums. */
871 optarg = nameend + 1;
875 fprintf (stderr, _("\
876 %s: option `-W %s' doesn't allow an argument\n"),
877 argv[0], pfound->name);
879 nextchar += strlen (nextchar);
883 else if (pfound->has_arg == 1)
886 optarg = argv[optind++];
891 _("%s: option `%s' requires an argument\n"),
892 argv[0], argv[optind - 1]);
893 nextchar += strlen (nextchar);
894 return optstring[0] == ':' ? ':' : '?';
897 nextchar += strlen (nextchar);
899 *longind = option_index;
902 *(pfound->flag) = pfound->val;
908 return 'W'; /* Let the application handle it. */
914 /* This is an option that accepts an argument optionally. */
915 if (*nextchar != '\0')
926 /* This is an option that requires an argument. */
927 if (*nextchar != '\0')
930 /* If we end this ARGV-element by taking the rest as an arg,
931 we must advance to the next element now. */
934 else if (optind == argc)
938 /* 1003.2 specifies the format of this message. */
940 _("%s: option requires an argument -- %c\n"),
944 if (optstring[0] == ':')
950 /* We already incremented `optind' once;
951 increment it again when taking next ARGV-elt as argument. */
952 optarg = argv[optind++];
961 getopt (argc, argv, optstring)
964 const char *optstring;
966 return _getopt_internal (argc, argv, optstring,
967 (const struct option *) 0,
973 getopt_long (argc, argv, options, long_options, opt_index)
977 const struct option *long_options;
980 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
983 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
984 If an option that starts with '-' (not '--') doesn't match a long option,
985 but does match a short option, it is parsed as a short option
989 getopt_long_only (argc, argv, options, long_options, opt_index)
993 const struct option *long_options;
996 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
999 #endif /* Not ELIDE_CODE. */
1003 /* Compile with -DTEST to make an executable for use in testing
1004 the above definition of `getopt'. */
1012 int digit_optind = 0;
1016 int this_option_optind = optind ? optind : 1;
1018 c = getopt (argc, argv, "abc:d:0123456789");
1034 if (digit_optind != 0 && digit_optind != this_option_optind)
1035 printf ("digits occur in two different argv-elements.\n");
1036 digit_optind = this_option_optind;
1037 printf ("option %c\n", c);
1041 printf ("option a\n");
1045 printf ("option b\n");
1049 printf ("option c with value `%s'\n", optarg);
1056 printf ("?? getopt returned character code 0%o ??\n", c);
1062 printf ("non-option ARGV-elements: ");
1063 while (optind < argc)
1064 printf ("%s ", argv[optind++]);