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 2, 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, write to the Free Software Foundation,
20 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
23 Ditto for AIX 3.2 and <stdlib.h>. */
31 # if !defined __STDC__ || !__STDC__
32 /* This is a separate conditional since some stdc systems
33 reject `defined (const)'. */
42 /* Comment out all this code if we are using the GNU C Library, and are not
43 actually compiling the library itself. This code is part of the GNU C
44 Library, but also included in many other GNU distributions. Compiling
45 and linking in this code is a waste when using the GNU C library
46 (especially if it is a shared library). Rather than having every GNU
47 program understand `configure --with-gnu-libc' and omit the object files,
48 it is simpler to just do this in the source for each such file. */
50 #define GETOPT_INTERFACE_VERSION 2
51 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
52 # include <gnu-versions.h>
53 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
61 /* This needs to come after some library #include
62 to get __GNU_LIBRARY__ defined. */
63 #ifdef __GNU_LIBRARY__
64 /* Don't include stdlib.h for non-GNU C libraries because some of them
65 contain conflicting prototypes for getopt. */
68 #endif /* GNU C library. */
72 # if HAVE_STRING_H - 0
78 /* This is for other GNU distributions with internationalized messages.
79 When compiling libc, the _ macro is predefined. */
80 # ifdef HAVE_LIBINTL_H
82 # define _(msgid) gettext (msgid)
84 # define _(msgid) (msgid)
88 /* This version of `getopt' appears to the caller like standard Unix `getopt'
89 but it behaves differently for the user, since it allows the user
90 to intersperse the options with the other arguments.
92 As `getopt' works, it permutes the elements of ARGV so that,
93 when it is done, all the options precede everything else. Thus
94 all application programs are extended to handle flexible argument order.
96 Setting the environment variable POSIXLY_CORRECT disables permutation.
97 Then the behavior is completely standard.
99 GNU application programs can use a third alternative mode in which
100 they can distinguish the relative order of options and other arguments. */
104 /* For communication from `getopt' to the caller.
105 When `getopt' finds an option that takes an argument,
106 the argument value is returned here.
107 Also, when `ordering' is RETURN_IN_ORDER,
108 each non-option ARGV-element is returned here. */
112 /* Index in ARGV of the next element to be scanned.
113 This is used for communication to and from the caller
114 and for communication between successive calls to `getopt'.
116 On entry to `getopt', zero means this is the first call; initialize.
118 When `getopt' returns -1, this is the index of the first of the
119 non-option elements that the caller should itself scan.
121 Otherwise, `optind' communicates from one call to the next
122 how much of ARGV has been scanned so far. */
124 /* 1003.2 says this must be 1 before any call. */
127 /* Formerly, initialization of getopt depended on optind==0, which
128 causes problems with re-calling getopt as programs generally don't
131 int __getopt_initialized;
133 /* The next char to be scanned in the option-element
134 in which the last option character we returned was found.
135 This allows us to pick up the scan where we left off.
137 If this is zero, or a null string, it means resume the scan
138 by advancing to the next ARGV-element. */
140 static char *nextchar;
142 /* Callers store zero here to inhibit the error message
143 for unrecognized options. */
147 /* Set to an option character which was unrecognized.
148 This must be initialized on some systems to avoid linking in the
149 system's own getopt implementation. */
153 /* Describe how to deal with options that follow non-option ARGV-elements.
155 If the caller did not specify anything,
156 the default is REQUIRE_ORDER if the environment variable
157 POSIXLY_CORRECT is defined, PERMUTE otherwise.
159 REQUIRE_ORDER means don't recognize them as options;
160 stop option processing when the first non-option is seen.
161 This is what Unix does.
162 This mode of operation is selected by either setting the environment
163 variable POSIXLY_CORRECT, or using `+' as the first character
164 of the list of option characters.
166 PERMUTE is the default. We permute the contents of ARGV as we scan,
167 so that eventually all the non-options are at the end. This allows options
168 to be given in any order, even with programs that were not written to
171 RETURN_IN_ORDER is an option available to programs that were written
172 to expect options and other ARGV-elements in any order and that care about
173 the ordering of the two. We describe each non-option ARGV-element
174 as if it were the argument of an option with character code 1.
175 Using `-' as the first character of the list of option characters
176 selects this mode of operation.
178 The special argument `--' forces an end of option-scanning regardless
179 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
180 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
184 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
187 /* Value of POSIXLY_CORRECT environment variable. */
188 static char *posixly_correct;
190 #ifdef __GNU_LIBRARY__
191 /* We want to avoid inclusion of string.h with non-GNU libraries
192 because there are many ways it can cause trouble.
193 On some systems, it contains special magic macros that don't work
196 # define my_index strchr
201 /* Avoid depending on library functions or files
202 whose names are inconsistent. */
205 extern char *getenv ();
222 /* If using GCC, we can safely declare strlen this way.
223 If not using GCC, it is ok not to declare it. */
225 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
226 That was relevant to code that was here before. */
227 # if (!defined __STDC__ || !__STDC__) && !defined strlen
228 /* gcc with -traditional declares the built-in strlen to return int,
229 and has done so at least since version 2.4.5. -- rms. */
230 extern int strlen (const char *);
231 # endif /* not __STDC__ */
232 #endif /* __GNUC__ */
234 #endif /* not __GNU_LIBRARY__ */
236 /* Handle permutation of arguments. */
238 /* Describe the part of ARGV that contains non-options that have
239 been skipped. `first_nonopt' is the index in ARGV of the first of them;
240 `last_nonopt' is the index after the last of them. */
242 static int first_nonopt;
243 static int last_nonopt;
246 /* Bash 2.0 gives us an environment variable containing flags
247 indicating ARGV elements that should not be considered arguments. */
249 /* Defined in getopt_init.c */
250 extern char *__getopt_nonoption_flags;
252 static int nonoption_flags_max_len;
253 static int nonoption_flags_len;
255 static int original_argc;
256 static char *const *original_argv;
258 /* Make sure the environment variable bash 2.0 puts in the environment
259 is valid for the getopt call we must make sure that the ARGV passed
260 to getopt is that one passed to the process. */
262 __attribute__ ((unused))
263 store_args_and_env (int argc, char *const *argv)
265 /* XXX This is no good solution. We should rather copy the args so
266 that we can compare them later. But we must not use malloc(3). */
267 original_argc = argc;
268 original_argv = argv;
270 # ifdef text_set_element
271 text_set_element (__libc_subinit, store_args_and_env);
272 # endif /* text_set_element */
274 # define SWAP_FLAGS(ch1, ch2) \
275 if (nonoption_flags_len > 0) \
277 char __tmp = __getopt_nonoption_flags[ch1]; \
278 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
279 __getopt_nonoption_flags[ch2] = __tmp; \
282 # define SWAP_FLAGS(ch1, ch2)
285 /* Exchange two adjacent subsequences of ARGV.
286 One subsequence is elements [first_nonopt,last_nonopt)
287 which contains all the non-options that have been skipped so far.
288 The other is elements [last_nonopt,optind), which contains all
289 the options processed since those non-options were skipped.
291 `first_nonopt' and `last_nonopt' are relocated so that they describe
292 the new indices of the non-options in ARGV after they are moved. */
294 #if defined __STDC__ && __STDC__
295 static void exchange (char **);
302 int bottom = first_nonopt;
303 int middle = last_nonopt;
307 /* Exchange the shorter segment with the far end of the longer segment.
308 That puts the shorter segment into the right place.
309 It leaves the longer segment in the right place overall,
310 but it consists of two parts that need to be swapped next. */
313 /* First make sure the handling of the `__getopt_nonoption_flags'
314 string can work normally. Our top argument must be in the range
316 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
318 /* We must extend the array. The user plays games with us and
319 presents new arguments. */
320 char *new_str = malloc (top + 1);
322 nonoption_flags_len = nonoption_flags_max_len = 0;
325 memset (__mempcpy (new_str, __getopt_nonoption_flags,
326 nonoption_flags_max_len),
327 '\0', top + 1 - nonoption_flags_max_len);
328 nonoption_flags_max_len = top + 1;
329 __getopt_nonoption_flags = new_str;
334 while (top > middle && middle > bottom)
336 if (top - middle > middle - bottom)
338 /* Bottom segment is the short one. */
339 int len = middle - bottom;
342 /* Swap it with the top part of the top segment. */
343 for (i = 0; i < len; i++)
345 tem = argv[bottom + i];
346 argv[bottom + i] = argv[top - (middle - bottom) + i];
347 argv[top - (middle - bottom) + i] = tem;
348 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
350 /* Exclude the moved bottom segment from further swapping. */
355 /* Top segment is the short one. */
356 int len = top - middle;
359 /* Swap it with the bottom part of the bottom segment. */
360 for (i = 0; i < len; i++)
362 tem = argv[bottom + i];
363 argv[bottom + i] = argv[middle + i];
364 argv[middle + i] = tem;
365 SWAP_FLAGS (bottom + i, middle + i);
367 /* Exclude the moved top segment from further swapping. */
372 /* Update records for the slots the non-options now occupy. */
374 first_nonopt += (optind - last_nonopt);
375 last_nonopt = optind;
378 /* Initialize the internal data when the first call is made. */
380 #if defined __STDC__ && __STDC__
381 static const char *_getopt_initialize (int, char *const *, const char *);
384 _getopt_initialize (argc, argv, optstring)
387 const char *optstring;
389 /* Start processing options with ARGV-element 1 (since ARGV-element 0
390 is the program name); the sequence of previously skipped
391 non-option ARGV-elements is empty. */
393 first_nonopt = last_nonopt = optind;
397 posixly_correct = getenv ("POSIXLY_CORRECT");
399 /* Determine how to handle the ordering of options and nonoptions. */
401 if (optstring[0] == '-')
403 ordering = RETURN_IN_ORDER;
406 else if (optstring[0] == '+')
408 ordering = REQUIRE_ORDER;
411 else if (posixly_correct != NULL)
412 ordering = REQUIRE_ORDER;
417 if (posixly_correct == NULL
418 && argc == original_argc && argv == original_argv)
420 if (nonoption_flags_max_len == 0)
422 if (__getopt_nonoption_flags == NULL
423 || __getopt_nonoption_flags[0] == '\0')
424 nonoption_flags_max_len = -1;
427 const char *orig_str = __getopt_nonoption_flags;
428 int len = nonoption_flags_max_len = strlen (orig_str);
429 if (nonoption_flags_max_len < argc)
430 nonoption_flags_max_len = argc;
431 __getopt_nonoption_flags =
432 (char *) malloc (nonoption_flags_max_len);
433 if (__getopt_nonoption_flags == NULL)
434 nonoption_flags_max_len = -1;
436 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
437 '\0', nonoption_flags_max_len - len);
440 nonoption_flags_len = nonoption_flags_max_len;
443 nonoption_flags_len = 0;
449 /* Scan elements of ARGV (whose length is ARGC) for option characters
452 If an element of ARGV starts with '-', and is not exactly "-" or "--",
453 then it is an option element. The characters of this element
454 (aside from the initial '-') are option characters. If `getopt'
455 is called repeatedly, it returns successively each of the option characters
456 from each of the option elements.
458 If `getopt' finds another option character, it returns that character,
459 updating `optind' and `nextchar' so that the next call to `getopt' can
460 resume the scan with the following option character or ARGV-element.
462 If there are no more option characters, `getopt' returns -1.
463 Then `optind' is the index in ARGV of the first ARGV-element
464 that is not an option. (The ARGV-elements have been permuted
465 so that those that are not options now come last.)
467 OPTSTRING is a string containing the legitimate option characters.
468 If an option character is seen that is not listed in OPTSTRING,
469 return '?' after printing an error message. If you set `opterr' to
470 zero, the error message is suppressed but we still return '?'.
472 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
473 so the following text in the same ARGV-element, or the text of the following
474 ARGV-element, is returned in `optarg'. Two colons mean an option that
475 wants an optional arg; if there is text in the current ARGV-element,
476 it is returned in `optarg', otherwise `optarg' is set to zero.
478 If OPTSTRING starts with `-' or `+', it requests different methods of
479 handling the non-option ARGV-elements.
480 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
482 Long-named options begin with `--' instead of `-'.
483 Their names may be abbreviated as long as the abbreviation is unique
484 or is an exact match for some defined option. If they have an
485 argument, it follows the option name in the same ARGV-element, separated
486 from the option name by a `=', or else the in next ARGV-element.
487 When `getopt' finds a long-named option, it returns 0 if that option's
488 `flag' field is nonzero, the value of the option's `val' field
489 if the `flag' field is zero.
491 The elements of ARGV aren't really const, because we permute them.
492 But we pretend they're const in the prototype to be compatible
495 LONGOPTS is a vector of `struct option' terminated by an
496 element containing a name which is zero.
498 LONGIND returns the index in LONGOPT of the long-named option found.
499 It is only valid when a long-named option has been found by the most
502 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
503 long-named options. */
506 _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
509 const char *optstring;
510 const struct option *longopts;
516 if (optind == 0 || !__getopt_initialized)
519 optind = 1; /* Don't scan ARGV[0], the program name. */
520 optstring = _getopt_initialize (argc, argv, optstring);
521 __getopt_initialized = 1;
524 /* Test whether ARGV[optind] points to a non-option argument.
525 Either it does not have option syntax, or there is an environment flag
526 from the shell indicating it is not an option. The later information
527 is only used when the used in the GNU libc. */
529 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
530 || (optind < nonoption_flags_len \
531 && __getopt_nonoption_flags[optind] == '1'))
533 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
536 if (nextchar == NULL || *nextchar == '\0')
538 /* Advance to the next ARGV-element. */
540 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
541 moved back by the user (who may also have changed the arguments). */
542 if (last_nonopt > optind)
543 last_nonopt = optind;
544 if (first_nonopt > optind)
545 first_nonopt = optind;
547 if (ordering == PERMUTE)
549 /* If we have just processed some options following some non-options,
550 exchange them so that the options come first. */
552 if (first_nonopt != last_nonopt && last_nonopt != optind)
553 exchange ((char **) argv);
554 else if (last_nonopt != optind)
555 first_nonopt = optind;
557 /* Skip any additional non-options
558 and extend the range of non-options previously skipped. */
560 while (optind < argc && NONOPTION_P)
562 last_nonopt = optind;
565 /* The special ARGV-element `--' means premature end of options.
566 Skip it like a null option,
567 then exchange with previous non-options as if it were an option,
568 then skip everything else like a non-option. */
570 if (optind != argc && !strcmp (argv[optind], "--"))
574 if (first_nonopt != last_nonopt && last_nonopt != optind)
575 exchange ((char **) argv);
576 else if (first_nonopt == last_nonopt)
577 first_nonopt = optind;
583 /* If we have done all the ARGV-elements, stop the scan
584 and back over any non-options that we skipped and permuted. */
588 /* Set the next-arg-index to point at the non-options
589 that we previously skipped, so the caller will digest them. */
590 if (first_nonopt != last_nonopt)
591 optind = first_nonopt;
595 /* If we have come to a non-option and did not permute it,
596 either stop the scan or describe it to the caller and pass it by. */
600 if (ordering == REQUIRE_ORDER)
602 optarg = argv[optind++];
606 /* We have found another option-ARGV-element.
607 Skip the initial punctuation. */
609 nextchar = (argv[optind] + 1
610 + (longopts != NULL && argv[optind][1] == '-'));
613 /* Decode the current option-ARGV-element. */
615 /* Check whether the ARGV-element is a long option.
617 If long_only and the ARGV-element has the form "-f", where f is
618 a valid short option, don't consider it an abbreviated form of
619 a long option that starts with f. Otherwise there would be no
620 way to give the -f short option.
622 On the other hand, if there's a long option "fubar" and
623 the ARGV-element is "-fu", do consider that an abbreviation of
624 the long option, just like "--fu", and not "-f" with arg "u".
626 This distinction seems to be the most useful approach. */
629 && (argv[optind][1] == '-'
630 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
633 const struct option *p;
634 const struct option *pfound = NULL;
640 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
643 /* Test all long options for either exact match
644 or abbreviated matches. */
645 for (p = longopts, option_index = 0; p->name; p++, option_index++)
646 if (!strncmp (p->name, nextchar, nameend - nextchar))
648 if ((unsigned int) (nameend - nextchar)
649 == (unsigned int) strlen (p->name))
651 /* Exact match found. */
653 indfound = option_index;
657 else if (pfound == NULL)
659 /* First nonexact match found. */
661 indfound = option_index;
664 /* Second or later nonexact match found. */
671 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
672 argv[0], argv[optind]);
673 nextchar += strlen (nextchar);
681 option_index = indfound;
685 /* Don't test has_arg with >, because some C compilers don't
686 allow it to be used on enums. */
688 optarg = nameend + 1;
693 if (argv[optind - 1][1] == '-')
696 _("%s: option `--%s' doesn't allow an argument\n"),
697 argv[0], pfound->name);
699 /* +option or -option */
701 _("%s: option `%c%s' doesn't allow an argument\n"),
702 argv[0], argv[optind - 1][0], pfound->name);
705 nextchar += strlen (nextchar);
707 optopt = pfound->val;
711 else if (pfound->has_arg == 1)
714 optarg = argv[optind++];
719 _("%s: option `%s' requires an argument\n"),
720 argv[0], argv[optind - 1]);
721 nextchar += strlen (nextchar);
722 optopt = pfound->val;
723 return optstring[0] == ':' ? ':' : '?';
726 nextchar += strlen (nextchar);
728 *longind = option_index;
731 *(pfound->flag) = pfound->val;
737 /* Can't find it as a long option. If this is not getopt_long_only,
738 or the option starts with '--' or is not a valid short
739 option, then it's an error.
740 Otherwise interpret it as a short option. */
741 if (!long_only || argv[optind][1] == '-'
742 || my_index (optstring, *nextchar) == NULL)
746 if (argv[optind][1] == '-')
748 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
751 /* +option or -option */
752 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
753 argv[0], argv[optind][0], nextchar);
755 nextchar = (char *) "";
762 /* Look at and handle the next short option-character. */
765 char c = *nextchar++;
766 char *temp = my_index (optstring, c);
768 /* Increment `optind' when we start to process its last character. */
769 if (*nextchar == '\0')
772 if (temp == NULL || c == ':')
777 /* 1003.2 specifies the format of this message. */
778 fprintf (stderr, _("%s: illegal option -- %c\n"),
781 fprintf (stderr, _("%s: invalid option -- %c\n"),
787 /* Convenience. Treat POSIX -W foo same as long option --foo */
788 if (temp[0] == 'W' && temp[1] == ';')
791 const struct option *p;
792 const struct option *pfound = NULL;
798 /* This is an option that requires an argument. */
799 if (*nextchar != '\0')
802 /* If we end this ARGV-element by taking the rest as an arg,
803 we must advance to the next element now. */
806 else if (optind == argc)
810 /* 1003.2 specifies the format of this message. */
811 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
815 if (optstring[0] == ':')
822 /* We already incremented `optind' once;
823 increment it again when taking next ARGV-elt as argument. */
824 optarg = argv[optind++];
826 /* optarg is now the argument, see if it's in the
827 table of longopts. */
829 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
832 /* Test all long options for either exact match
833 or abbreviated matches. */
834 for (p = longopts, option_index = 0; p->name; p++, option_index++)
835 if (!strncmp (p->name, nextchar, nameend - nextchar))
837 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
839 /* Exact match found. */
841 indfound = option_index;
845 else if (pfound == NULL)
847 /* First nonexact match found. */
849 indfound = option_index;
852 /* Second or later nonexact match found. */
858 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
859 argv[0], argv[optind]);
860 nextchar += strlen (nextchar);
866 option_index = indfound;
869 /* Don't test has_arg with >, because some C compilers don't
870 allow it to be used on enums. */
872 optarg = nameend + 1;
876 fprintf (stderr, _("\
877 %s: option `-W %s' doesn't allow an argument\n"),
878 argv[0], pfound->name);
880 nextchar += strlen (nextchar);
884 else if (pfound->has_arg == 1)
887 optarg = argv[optind++];
892 _("%s: option `%s' requires an argument\n"),
893 argv[0], argv[optind - 1]);
894 nextchar += strlen (nextchar);
895 return optstring[0] == ':' ? ':' : '?';
898 nextchar += strlen (nextchar);
900 *longind = option_index;
903 *(pfound->flag) = pfound->val;
909 return 'W'; /* Let the application handle it. */
915 /* This is an option that accepts an argument optionally. */
916 if (*nextchar != '\0')
927 /* This is an option that requires an argument. */
928 if (*nextchar != '\0')
931 /* If we end this ARGV-element by taking the rest as an arg,
932 we must advance to the next element now. */
935 else if (optind == argc)
939 /* 1003.2 specifies the format of this message. */
941 _("%s: option requires an argument -- %c\n"),
945 if (optstring[0] == ':')
951 /* We already incremented `optind' once;
952 increment it again when taking next ARGV-elt as argument. */
953 optarg = argv[optind++];
962 getopt (argc, argv, optstring)
965 const char *optstring;
967 return _getopt_internal (argc, argv, optstring,
968 (const struct option *) 0,
974 getopt_long (argc, argv, options, long_options, opt_index)
978 const struct option *long_options;
981 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
984 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
985 If an option that starts with '-' (not '--') doesn't match a long option,
986 but does match a short option, it is parsed as a short option
990 getopt_long_only (argc, argv, options, long_options, opt_index)
994 const struct option *long_options;
997 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
1000 #endif /* Not ELIDE_CODE. */
1004 /* Compile with -DTEST to make an executable for use in testing
1005 the above definition of `getopt'. */
1013 int digit_optind = 0;
1017 int this_option_optind = optind ? optind : 1;
1019 c = getopt (argc, argv, "abc:d:0123456789");
1035 if (digit_optind != 0 && digit_optind != this_option_optind)
1036 printf ("digits occur in two different argv-elements.\n");
1037 digit_optind = this_option_optind;
1038 printf ("option %c\n", c);
1042 printf ("option a\n");
1046 printf ("option b\n");
1050 printf ("option c with value `%s'\n", optarg);
1057 printf ("?? getopt returned character code 0%o ??\n", c);
1063 printf ("non-option ARGV-elements: ");
1064 while (optind < argc)
1065 printf ("%s ", argv[optind++]);