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+/* getopt.h - declarations for getopt. */
+
+/* Copyright (C) 1989-2020 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Bash 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* XXX THIS HAS BEEN MODIFIED FOR INCORPORATION INTO BASH XXX */
+
+#ifndef _SH_GETOPT_H
+#define _SH_GETOPT_H 1
+
+#include "stdc.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. */
+
+extern char *sh_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 EOF, this is the index of the first of the
+ non-option elements that the caller should itself scan.
+
+ Otherwise, `sh_optind' communicates from one call to the next
+ how much of ARGV has been scanned so far. */
+
+extern int sh_optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+ for unrecognized options. */
+
+extern int sh_opterr;
+
+/* Set to an option character which was unrecognized. */
+
+extern int sh_optopt;
+
+/* Set to 1 when an unrecognized option is encountered. */
+extern int sh_badopt;
+
+extern int sh_getopt PARAMS((int, char *const *, const char *));
+
+typedef struct sh_getopt_state
+{
+ char *gs_optarg;
+ int gs_optind;
+ int gs_curopt;
+ char *gs_nextchar;
+ int gs_charindex;
+ int gs_flags;
+} sh_getopt_state_t;
+
+extern void sh_getopt_restore_state PARAMS((char **));
+
+extern sh_getopt_state_t *sh_getopt_alloc_istate PARAMS((void));
+extern void sh_getopt_dispose_istate PARAMS((sh_getopt_state_t *));
+
+extern sh_getopt_state_t *sh_getopt_save_istate PARAMS((void));
+extern void sh_getopt_restore_istate PARAMS((sh_getopt_state_t *));
+
+#endif /* _SH_GETOPT_H */