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+This file is shopt.def, from which is created shopt.c.
+It implements the Bash `shopt' builtin.
+
+Copyright (C) 1994-2021 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/>.
+
+$PRODUCES shopt.c
+
+$BUILTIN shopt
+$FUNCTION shopt_builtin
+$SHORT_DOC shopt [-pqsu] [-o] [optname ...]
+Set and unset shell options.
+
+Change the setting of each shell option OPTNAME. Without any option
+arguments, list each supplied OPTNAME, or all shell options if no
+OPTNAMEs are given, with an indication of whether or not each is set.
+
+Options:
+ -o restrict OPTNAMEs to those defined for use with `set -o'
+ -p print each shell option with an indication of its status
+ -q suppress output
+ -s enable (set) each OPTNAME
+ -u disable (unset) each OPTNAME
+
+Exit Status:
+Returns success if OPTNAME is enabled; fails if an invalid option is
+given or OPTNAME is disabled.
+$END
+
+#include <config.h>
+
+#if defined (HAVE_UNISTD_H)
+# ifdef _MINIX
+# include <sys/types.h>
+# endif
+# include <unistd.h>
+#endif
+
+#include <stdio.h>
+
+#include "version.h"
+
+#include "../bashintl.h"
+
+#include "../shell.h"
+#include "../flags.h"
+#include "common.h"
+#include "bashgetopt.h"
+
+#if defined (READLINE)
+# include "../bashline.h"
+#endif
+
+#if defined (HISTORY)
+# include "../bashhist.h"
+#endif
+
+#define UNSETOPT 0
+#define SETOPT 1
+
+#define OPTFMT "%-15s\t%s\n"
+
+extern int allow_null_glob_expansion, fail_glob_expansion, glob_dot_filenames;
+extern int cdable_vars, mail_warning, source_uses_path;
+extern int no_exit_on_failed_exec, print_shift_error;
+extern int check_hashed_filenames, promptvars;
+extern int cdspelling, expand_aliases;
+extern int extended_quote;
+extern int check_window_size;
+extern int glob_ignore_case, match_ignore_case;
+extern int hup_on_exit;
+extern int xpg_echo;
+extern int gnu_error_format;
+extern int check_jobs_at_exit;
+extern int autocd;
+extern int glob_star;
+extern int glob_asciirange;
+extern int glob_always_skip_dot_and_dotdot;
+extern int lastpipe_opt;
+extern int inherit_errexit;
+extern int localvar_inherit;
+extern int localvar_unset;
+extern int varassign_redir_autoclose;
+extern int singlequote_translations;
+extern int patsub_replacement;
+
+#if defined (EXTENDED_GLOB)
+extern int extended_glob;
+#endif
+
+#if defined (READLINE)
+extern int hist_verify, history_reediting, perform_hostname_completion;
+extern int no_empty_command_completion;
+extern int force_fignore;
+extern int dircomplete_spelling, dircomplete_expand;
+extern int complete_fullquote;
+
+extern int enable_hostname_completion PARAMS((int));
+#endif
+
+#if defined (PROGRAMMABLE_COMPLETION)
+extern int prog_completion_enabled;
+extern int progcomp_alias;
+#endif
+
+#if defined (DEBUGGER)
+extern int debugging_mode;
+#endif
+
+#if defined (ARRAY_VARS)
+extern int assoc_expand_once;
+extern int array_expand_once;
+int expand_once_flag;
+#endif
+
+#if defined (SYSLOG_HISTORY)
+extern int syslog_history;
+#endif
+
+static void shopt_error PARAMS((char *));
+
+static int set_shellopts_after_change PARAMS((char *, int));
+static int set_compatibility_level PARAMS((char *, int));
+
+#if defined (RESTRICTED_SHELL)
+static int set_restricted_shell PARAMS((char *, int));
+#endif
+
+#if defined (READLINE)
+static int shopt_enable_hostname_completion PARAMS((char *, int));
+static int shopt_set_complete_direxpand PARAMS((char *, int));
+#endif
+
+#if defined (ARRAY_VARS)
+static int set_assoc_expand PARAMS((char *, int));
+#endif
+
+#if defined (EXTENDED_GLOB)
+int extglob_flag = EXTGLOB_DEFAULT;
+static int shopt_set_extglob PARAMS((char *, int));
+#endif
+
+int expaliases_flag = 0;
+static int shopt_set_expaliases PARAMS((char *, int));
+
+static int shopt_set_debug_mode PARAMS((char *, int));
+
+static int shopt_login_shell;
+static int shopt_compat31;
+static int shopt_compat32;
+static int shopt_compat40;
+static int shopt_compat41;
+static int shopt_compat42;
+static int shopt_compat43;
+static int shopt_compat44;
+
+typedef int shopt_set_func_t PARAMS((char *, int));
+
+/* If you add a new variable name here, make sure to set the default value
+ appropriately in reset_shopt_options. */
+
+static struct {
+ char *name;
+ int *value;
+ shopt_set_func_t *set_func;
+} shopt_vars[] = {
+ { "autocd", &autocd, (shopt_set_func_t *)NULL },
+#if defined (ARRAY_VARS)
+ { "assoc_expand_once", &expand_once_flag, set_assoc_expand },
+#endif
+ { "cdable_vars", &cdable_vars, (shopt_set_func_t *)NULL },
+ { "cdspell", &cdspelling, (shopt_set_func_t *)NULL },
+ { "checkhash", &check_hashed_filenames, (shopt_set_func_t *)NULL },
+#if defined (JOB_CONTROL)
+ { "checkjobs", &check_jobs_at_exit, (shopt_set_func_t *)NULL },
+#endif
+ { "checkwinsize", &check_window_size, (shopt_set_func_t *)NULL },
+#if defined (HISTORY)
+ { "cmdhist", &command_oriented_history, (shopt_set_func_t *)NULL },
+#endif
+ { "compat31", &shopt_compat31, set_compatibility_level },
+ { "compat32", &shopt_compat32, set_compatibility_level },
+ { "compat40", &shopt_compat40, set_compatibility_level },
+ { "compat41", &shopt_compat41, set_compatibility_level },
+ { "compat42", &shopt_compat42, set_compatibility_level },
+ { "compat43", &shopt_compat43, set_compatibility_level },
+ { "compat44", &shopt_compat44, set_compatibility_level },
+#if defined (READLINE)
+ { "complete_fullquote", &complete_fullquote, (shopt_set_func_t *)NULL},
+ { "direxpand", &dircomplete_expand, shopt_set_complete_direxpand },
+ { "dirspell", &dircomplete_spelling, (shopt_set_func_t *)NULL },
+#endif
+ { "dotglob", &glob_dot_filenames, (shopt_set_func_t *)NULL },
+ { "execfail", &no_exit_on_failed_exec, (shopt_set_func_t *)NULL },
+ { "expand_aliases", &expaliases_flag, shopt_set_expaliases },
+#if defined (DEBUGGER)
+ { "extdebug", &debugging_mode, shopt_set_debug_mode },
+#endif
+#if defined (EXTENDED_GLOB)
+ { "extglob", &extglob_flag, shopt_set_extglob },
+#endif
+ { "extquote", &extended_quote, (shopt_set_func_t *)NULL },
+ { "failglob", &fail_glob_expansion, (shopt_set_func_t *)NULL },
+#if defined (READLINE)
+ { "force_fignore", &force_fignore, (shopt_set_func_t *)NULL },
+#endif
+ { "globasciiranges", &glob_asciirange, (shopt_set_func_t *)NULL },
+ { "globskipdots", &glob_always_skip_dot_and_dotdot, (shopt_set_func_t *)NULL },
+ { "globstar", &glob_star, (shopt_set_func_t *)NULL },
+ { "gnu_errfmt", &gnu_error_format, (shopt_set_func_t *)NULL },
+#if defined (HISTORY)
+ { "histappend", &force_append_history, (shopt_set_func_t *)NULL },
+#endif
+#if defined (READLINE)
+ { "histreedit", &history_reediting, (shopt_set_func_t *)NULL },
+ { "histverify", &hist_verify, (shopt_set_func_t *)NULL },
+ { "hostcomplete", &perform_hostname_completion, shopt_enable_hostname_completion },
+#endif
+ { "huponexit", &hup_on_exit, (shopt_set_func_t *)NULL },
+ { "inherit_errexit", &inherit_errexit, (shopt_set_func_t *)NULL },
+ { "interactive_comments", &interactive_comments, set_shellopts_after_change },
+ { "lastpipe", &lastpipe_opt, (shopt_set_func_t *)NULL },
+#if defined (HISTORY)
+ { "lithist", &literal_history, (shopt_set_func_t *)NULL },
+#endif
+ { "localvar_inherit", &localvar_inherit, (shopt_set_func_t *)NULL },
+ { "localvar_unset", &localvar_unset, (shopt_set_func_t *)NULL },
+ { "login_shell", &shopt_login_shell, set_login_shell },
+ { "mailwarn", &mail_warning, (shopt_set_func_t *)NULL },
+#if defined (READLINE)
+ { "no_empty_cmd_completion", &no_empty_command_completion, (shopt_set_func_t *)NULL },
+#endif
+ { "nocaseglob", &glob_ignore_case, (shopt_set_func_t *)NULL },
+ { "nocasematch", &match_ignore_case, (shopt_set_func_t *)NULL },
+ { "noexpand_translation", &singlequote_translations, (shopt_set_func_t *)NULL },
+ { "nullglob", &allow_null_glob_expansion, (shopt_set_func_t *)NULL },
+ { "patsub_replacement", &patsub_replacement, (shopt_set_func_t *)NULL },
+#if defined (PROGRAMMABLE_COMPLETION)
+ { "progcomp", &prog_completion_enabled, (shopt_set_func_t *)NULL },
+# if defined (ALIAS)
+ { "progcomp_alias", &progcomp_alias, (shopt_set_func_t *)NULL },
+# endif
+#endif
+ { "promptvars", &promptvars, (shopt_set_func_t *)NULL },
+#if defined (RESTRICTED_SHELL)
+ { "restricted_shell", &restricted_shell, set_restricted_shell },
+#endif
+ { "shift_verbose", &print_shift_error, (shopt_set_func_t *)NULL },
+ { "sourcepath", &source_uses_path, (shopt_set_func_t *)NULL },
+#if defined (SYSLOG_HISTORY) && defined (SYSLOG_SHOPT)
+ { "syslog_history", &syslog_history, (shopt_set_func_t *)NULL },
+#endif
+ { "varredir_close", &varassign_redir_autoclose, (shopt_set_func_t *)NULL },
+ { "xpg_echo", &xpg_echo, (shopt_set_func_t *)NULL },
+ { (char *)0, (int *)0, (shopt_set_func_t *)NULL }
+};
+
+#define N_SHOPT_OPTIONS (sizeof (shopt_vars) / sizeof (shopt_vars[0]))
+
+#define GET_SHOPT_OPTION_VALUE(i) (*shopt_vars[i].value)
+
+static const char * const on = "on";
+static const char * const off = "off";
+
+static int find_shopt PARAMS((char *));
+static int toggle_shopts PARAMS((int, WORD_LIST *, int));
+static void print_shopt PARAMS((char *, int, int));
+static int list_shopts PARAMS((WORD_LIST *, int));
+static int list_some_shopts PARAMS((int, int));
+static int list_shopt_o_options PARAMS((WORD_LIST *, int));
+static int list_some_o_options PARAMS((int, int));
+static int set_shopt_o_options PARAMS((int, WORD_LIST *, int));
+
+#define SFLAG 0x01
+#define UFLAG 0x02
+#define QFLAG 0x04
+#define OFLAG 0x08
+#define PFLAG 0x10
+
+int
+shopt_builtin (list)
+ WORD_LIST *list;
+{
+ int opt, flags, rval;
+
+ flags = 0;
+ reset_internal_getopt ();
+ while ((opt = internal_getopt (list, "psuoq")) != -1)
+ {
+ switch (opt)
+ {
+ case 's':
+ flags |= SFLAG;
+ break;
+ case 'u':
+ flags |= UFLAG;
+ break;
+ case 'q':
+ flags |= QFLAG;
+ break;
+ case 'o':
+ flags |= OFLAG;
+ break;
+ case 'p':
+ flags |= PFLAG;
+ break;
+ CASE_HELPOPT;
+ default:
+ builtin_usage ();
+ return (EX_USAGE);
+ }
+ }
+ list = loptend;
+
+ if ((flags & (SFLAG|UFLAG)) == (SFLAG|UFLAG))
+ {
+ builtin_error (_("cannot set and unset shell options simultaneously"));
+ return (EXECUTION_FAILURE);
+ }
+
+ rval = EXECUTION_SUCCESS;
+ if ((flags & OFLAG) && ((flags & (SFLAG|UFLAG)) == 0)) /* shopt -o */
+ rval = list_shopt_o_options (list, flags);
+ else if (list && (flags & OFLAG)) /* shopt -so args */
+ rval = set_shopt_o_options ((flags & SFLAG) ? FLAG_ON : FLAG_OFF, list, flags & QFLAG);
+ else if (flags & OFLAG) /* shopt -so */
+ rval = list_some_o_options ((flags & SFLAG) ? 1 : 0, flags);
+ else if (list && (flags & (SFLAG|UFLAG))) /* shopt -su args */
+ rval = toggle_shopts ((flags & SFLAG) ? SETOPT : UNSETOPT, list, flags & QFLAG);
+ else if ((flags & (SFLAG|UFLAG)) == 0) /* shopt [args] */
+ rval = list_shopts (list, flags);
+ else /* shopt -su */
+ rval = list_some_shopts ((flags & SFLAG) ? SETOPT : UNSETOPT, flags);
+ return (rval);
+}
+
+/* Reset the options managed by `shopt' to the values they would have at
+ shell startup. Variables from shopt_vars. */
+void
+reset_shopt_options ()
+{
+ autocd = cdable_vars = cdspelling = 0;
+ check_hashed_filenames = CHECKHASH_DEFAULT;
+ check_window_size = CHECKWINSIZE_DEFAULT;
+ allow_null_glob_expansion = glob_dot_filenames = 0;
+ no_exit_on_failed_exec = 0;
+ expand_aliases = expaliases_flag = 0;
+ extended_quote = 1;
+ fail_glob_expansion = 0;
+ glob_asciirange = GLOBASCII_DEFAULT;
+ glob_star = 0;
+ gnu_error_format = 0;
+ hup_on_exit = 0;
+ inherit_errexit = 0;
+ interactive_comments = 1;
+ lastpipe_opt = 0;
+ localvar_inherit = localvar_unset = 0;
+ mail_warning = 0;
+ glob_ignore_case = match_ignore_case = 0;
+ print_shift_error = 0;
+ source_uses_path = promptvars = 1;
+ varassign_redir_autoclose = 0;
+ singlequote_translations = 0;
+ patsub_replacement = 1;
+
+#if defined (JOB_CONTROL)
+ check_jobs_at_exit = 0;
+#endif
+
+#if defined (EXTENDED_GLOB)
+ extended_glob = extglob_flag = EXTGLOB_DEFAULT;
+#endif
+
+#if defined (ARRAY_VARS)
+ expand_once_flag = assoc_expand_once = 0;
+#endif
+
+#if defined (HISTORY)
+ literal_history = 0;
+ force_append_history = 0;
+ command_oriented_history = 1;
+#endif
+
+#if defined (SYSLOG_HISTORY)
+# if defined (SYSLOG_SHOPT)
+ syslog_history = SYSLOG_SHOPT;
+# else
+ syslog_history = 1;
+# endif /* SYSLOG_SHOPT */
+#endif
+
+#if defined (READLINE)
+ complete_fullquote = 1;
+ force_fignore = 1;
+ hist_verify = history_reediting = 0;
+ perform_hostname_completion = 1;
+# if DIRCOMPLETE_EXPAND_DEFAULT
+ dircomplete_expand = 1;
+# else
+ dircomplete_expand = 0;
+#endif
+ dircomplete_spelling = 0;
+ no_empty_command_completion = 0;
+#endif
+
+#if defined (PROGRAMMABLE_COMPLETION)
+ prog_completion_enabled = 1;
+# if defined (ALIAS)
+ progcomp_alias = 0;
+# endif
+#endif
+
+#if defined (DEFAULT_ECHO_TO_XPG) || defined (STRICT_POSIX)
+ xpg_echo = 1;
+#else
+ xpg_echo = 0;
+#endif /* DEFAULT_ECHO_TO_XPG */
+
+ shopt_login_shell = login_shell;
+}
+
+static int
+find_shopt (name)
+ char *name;
+{
+ int i;
+
+ for (i = 0; shopt_vars[i].name; i++)
+ if (STREQ (name, shopt_vars[i].name))
+ return i;
+ return -1;
+}
+
+static void
+shopt_error (s)
+ char *s;
+{
+ builtin_error (_("%s: invalid shell option name"), s);
+}
+
+static int
+toggle_shopts (mode, list, quiet)
+ int mode;
+ WORD_LIST *list;
+ int quiet;
+{
+ WORD_LIST *l;
+ int ind, rval;
+ SHELL_VAR *v;
+
+ for (l = list, rval = EXECUTION_SUCCESS; l; l = l->next)
+ {
+ ind = find_shopt (l->word->word);
+ if (ind < 0)
+ {
+ shopt_error (l->word->word);
+ rval = EXECUTION_FAILURE;
+ }
+ else
+ {
+ *shopt_vars[ind].value = mode; /* 1 for set, 0 for unset */
+ if (shopt_vars[ind].set_func)
+ (*shopt_vars[ind].set_func) (shopt_vars[ind].name, mode);
+ }
+ }
+
+ /* Don't set $BASHOPTS here if it hasn't already been initialized */
+ if (v = find_variable ("BASHOPTS"))
+ set_bashopts ();
+ return (rval);
+}
+
+static void
+print_shopt (name, val, flags)
+ char *name;
+ int val, flags;
+{
+ if (flags & PFLAG)
+ printf ("shopt %s %s\n", val ? "-s" : "-u", name);
+ else
+ printf (OPTFMT, name, val ? on : off);
+}
+
+/* List the values of all or any of the `shopt' options. Returns 0 if
+ all were listed or all variables queried were on; 1 otherwise. */
+static int
+list_shopts (list, flags)
+ WORD_LIST *list;
+ int flags;
+{
+ WORD_LIST *l;
+ int i, val, rval;
+
+ if (list == 0)
+ {
+ for (i = 0; shopt_vars[i].name; i++)
+ {
+ val = *shopt_vars[i].value;
+ if ((flags & QFLAG) == 0)
+ print_shopt (shopt_vars[i].name, val, flags);
+ }
+ return (sh_chkwrite (EXECUTION_SUCCESS));
+ }
+
+ for (l = list, rval = EXECUTION_SUCCESS; l; l = l->next)
+ {
+ i = find_shopt (l->word->word);
+ if (i < 0)
+ {
+ shopt_error (l->word->word);
+ rval = EXECUTION_FAILURE;
+ continue;
+ }
+ val = *shopt_vars[i].value;
+ if (val == 0)
+ rval = EXECUTION_FAILURE;
+ if ((flags & QFLAG) == 0)
+ print_shopt (l->word->word, val, flags);
+ }
+
+ return (sh_chkwrite (rval));
+}
+
+static int
+list_some_shopts (mode, flags)
+ int mode, flags;
+{
+ int val, i;
+
+ for (i = 0; shopt_vars[i].name; i++)
+ {
+ val = *shopt_vars[i].value;
+ if (((flags & QFLAG) == 0) && mode == val)
+ print_shopt (shopt_vars[i].name, val, flags);
+ }
+ return (sh_chkwrite (EXECUTION_SUCCESS));
+}
+
+static int
+list_shopt_o_options (list, flags)
+ WORD_LIST *list;
+ int flags;
+{
+ WORD_LIST *l;
+ int val, rval;
+
+ if (list == 0)
+ {
+ if ((flags & QFLAG) == 0)
+ list_minus_o_opts (-1, (flags & PFLAG));
+ return (sh_chkwrite (EXECUTION_SUCCESS));
+ }
+
+ for (l = list, rval = EXECUTION_SUCCESS; l; l = l->next)
+ {
+ val = minus_o_option_value (l->word->word);
+ if (val == -1)
+ {
+ sh_invalidoptname (l->word->word);
+ rval = EXECUTION_FAILURE;
+ continue;
+ }
+ if (val == 0)
+ rval = EXECUTION_FAILURE;
+ if ((flags & QFLAG) == 0)
+ {
+ if (flags & PFLAG)
+ printf ("set %co %s\n", val ? '-' : '+', l->word->word);
+ else
+ printf (OPTFMT, l->word->word, val ? on : off);
+ }
+ }
+ return (sh_chkwrite (rval));
+}
+
+static int
+list_some_o_options (mode, flags)
+ int mode, flags;
+{
+ if ((flags & QFLAG) == 0)
+ list_minus_o_opts (mode, (flags & PFLAG));
+ return (sh_chkwrite (EXECUTION_SUCCESS));
+}
+
+static int
+set_shopt_o_options (mode, list, quiet)
+ int mode;
+ WORD_LIST *list;
+ int quiet;
+{
+ WORD_LIST *l;
+ int rval;
+
+ for (l = list, rval = EXECUTION_SUCCESS; l; l = l->next)
+ {
+ if (set_minus_o_option (mode, l->word->word) == EXECUTION_FAILURE)
+ rval = EXECUTION_FAILURE;
+ }
+ set_shellopts ();
+ return rval;
+}
+
+/* If we set or unset interactive_comments with shopt, make sure the
+ change is reflected in $SHELLOPTS. */
+static int
+set_shellopts_after_change (option_name, mode)
+ char *option_name;
+ int mode;
+{
+ set_shellopts ();
+ return (0);
+}
+
+static int
+shopt_set_debug_mode (option_name, mode)
+ char *option_name;
+ int mode;
+{
+#if defined (DEBUGGER)
+ error_trace_mode = function_trace_mode = debugging_mode;
+ set_shellopts ();
+ if (debugging_mode)
+ init_bash_argv ();
+#endif
+ return (0);
+}
+
+static int
+shopt_set_expaliases (option_name, mode)
+ char *option_name;
+ int mode;
+{
+ expand_aliases = expaliases_flag;
+ return 0;
+}
+
+#if defined (EXTENDED_GLOB)
+static int
+shopt_set_extglob (option_name, mode)
+ char *option_name;
+ int mode;
+{
+ extended_glob = extglob_flag;
+ return 0;
+}
+#endif
+
+#if defined (READLINE)
+static int
+shopt_enable_hostname_completion (option_name, mode)
+ char *option_name;
+ int mode;
+{
+ return (enable_hostname_completion (mode));
+}
+#endif
+
+static int
+set_compatibility_level (option_name, mode)
+ char *option_name;
+ int mode;
+{
+ int ind, oldval;
+ char *rhs;
+
+ /* If we're unsetting one of the compatibility options, make sure the
+ current value is in the range of the compatNN space. */
+ if (mode == 0)
+ oldval = shell_compatibility_level;
+
+ /* If we're setting something, redo some of the work we did above in
+ toggle_shopt(). Unset everything and reset the appropriate option
+ based on OPTION_NAME. */
+ if (mode)
+ {
+ shopt_compat31 = shopt_compat32 = 0;
+ shopt_compat40 = shopt_compat41 = shopt_compat42 = shopt_compat43 = 0;
+ shopt_compat44 = 0;
+ ind = find_shopt (option_name);
+ *shopt_vars[ind].value = mode;
+ }
+
+ /* Then set shell_compatibility_level based on what remains */
+ if (shopt_compat31)
+ shell_compatibility_level = 31;
+ else if (shopt_compat32)
+ shell_compatibility_level = 32;
+ else if (shopt_compat40)
+ shell_compatibility_level = 40;
+ else if (shopt_compat41)
+ shell_compatibility_level = 41;
+ else if (shopt_compat42)
+ shell_compatibility_level = 42;
+ else if (shopt_compat43)
+ shell_compatibility_level = 43;
+ else if (shopt_compat44)
+ shell_compatibility_level = 44;
+ else if (oldval > 44 && shell_compatibility_level < DEFAULT_COMPAT_LEVEL)
+ ;
+ else
+ shell_compatibility_level = DEFAULT_COMPAT_LEVEL;
+
+ /* Make sure the current compatibility level is reflected in BASH_COMPAT */
+ rhs = itos (shell_compatibility_level);
+ bind_variable ("BASH_COMPAT", rhs, 0);
+ free (rhs);
+
+ return 0;
+}
+
+/* Set and unset the various compatibility options from the value of
+ shell_compatibility_level; used by sv_shcompat */
+void
+set_compatibility_opts ()
+{
+ shopt_compat31 = shopt_compat32 = 0;
+ shopt_compat40 = shopt_compat41 = shopt_compat42 = shopt_compat43 = 0;
+ shopt_compat44 = 0;
+ switch (shell_compatibility_level)
+ {
+ case DEFAULT_COMPAT_LEVEL:
+ case 51: /* completeness */
+ case 50:
+ break;
+ case 44:
+ shopt_compat44 = 1; break;
+ case 43:
+ shopt_compat43 = 1; break;
+ case 42:
+ shopt_compat42 = 1; break;
+ case 41:
+ shopt_compat41 = 1; break;
+ case 40:
+ shopt_compat40 = 1; break;
+ case 32:
+ shopt_compat32 = 1; break;
+ case 31:
+ shopt_compat31 = 1; break;
+ }
+}
+
+#if defined (READLINE)
+static int
+shopt_set_complete_direxpand (option_name, mode)
+ char *option_name;
+ int mode;
+{
+ set_directory_hook ();
+ return 0;
+}
+#endif
+
+#if defined (RESTRICTED_SHELL)
+/* Don't allow the value of restricted_shell to be modified. */
+
+static int
+set_restricted_shell (option_name, mode)
+ char *option_name;
+ int mode;
+{
+ static int save_restricted = -1;
+
+ if (save_restricted == -1)
+ save_restricted = shell_is_restricted (shell_name);
+
+ restricted_shell = save_restricted;
+ return (0);
+}
+#endif /* RESTRICTED_SHELL */
+
+/* Not static so shell.c can call it to initialize shopt_login_shell */
+int
+set_login_shell (option_name, mode)
+ char *option_name;
+ int mode;
+{
+ shopt_login_shell = login_shell != 0;
+ return (0);
+}
+
+char **
+get_shopt_options ()
+{
+ char **ret;
+ int n, i;
+
+ n = sizeof (shopt_vars) / sizeof (shopt_vars[0]);
+ ret = strvec_create (n + 1);
+ for (i = 0; shopt_vars[i].name; i++)
+ ret[i] = savestring (shopt_vars[i].name);
+ ret[i] = (char *)NULL;
+ return ret;
+}
+
+/*
+ * External interface for other parts of the shell. NAME is a string option;
+ * MODE is 0 if we want to unset an option; 1 if we want to set an option.
+ * REUSABLE is 1 if we want to print output in a form that may be reused.
+ */
+int
+shopt_setopt (name, mode)
+ char *name;
+ int mode;
+{
+ WORD_LIST *wl;
+ int r;
+
+ wl = add_string_to_list (name, (WORD_LIST *)NULL);
+ r = toggle_shopts (mode, wl, 0);
+ dispose_words (wl);
+ return r;
+}
+
+int
+shopt_listopt (name, reusable)
+ char *name;
+ int reusable;
+{
+ int i;
+
+ if (name == 0)
+ return (list_shopts ((WORD_LIST *)NULL, reusable ? PFLAG : 0));
+
+ i = find_shopt (name);
+ if (i < 0)
+ {
+ shopt_error (name);
+ return (EXECUTION_FAILURE);
+ }
+
+ print_shopt (name, *shopt_vars[i].value, reusable ? PFLAG : 0);
+ return (sh_chkwrite (EXECUTION_SUCCESS));
+}
+
+void
+set_bashopts ()
+{
+ char *value;
+ char tflag[N_SHOPT_OPTIONS];
+ int vsize, i, vptr, *ip, exported;
+ SHELL_VAR *v;
+
+ for (vsize = i = 0; shopt_vars[i].name; i++)
+ {
+ tflag[i] = 0;
+ if (GET_SHOPT_OPTION_VALUE (i))
+ {
+ vsize += strlen (shopt_vars[i].name) + 1;
+ tflag[i] = 1;
+ }
+ }
+
+ value = (char *)xmalloc (vsize + 1);
+
+ for (i = vptr = 0; shopt_vars[i].name; i++)
+ {
+ if (tflag[i])
+ {
+ strcpy (value + vptr, shopt_vars[i].name);
+ vptr += strlen (shopt_vars[i].name);
+ value[vptr++] = ':';
+ }
+ }
+
+ if (vptr)
+ vptr--; /* cut off trailing colon */
+ value[vptr] = '\0';
+
+ v = find_variable ("BASHOPTS");
+
+ /* Turn off the read-only attribute so we can bind the new value, and
+ note whether or not the variable was exported. */
+ if (v)
+ {
+ VUNSETATTR (v, att_readonly);
+ exported = exported_p (v);
+ }
+ else
+ exported = 0;
+
+ v = bind_variable ("BASHOPTS", value, 0);
+
+ /* Turn the read-only attribute back on, and turn off the export attribute
+ if it was set implicitly by mark_modified_vars and SHELLOPTS was not
+ exported before we bound the new value. */
+ VSETATTR (v, att_readonly);
+ if (mark_modified_vars && exported == 0 && exported_p (v))
+ VUNSETATTR (v, att_exported);
+
+ free (value);
+}
+
+void
+parse_bashopts (value)
+ char *value;
+{
+ char *vname;
+ int vptr, ind;
+
+ vptr = 0;
+ while (vname = extract_colon_unit (value, &vptr))
+ {
+ ind = find_shopt (vname);
+ if (ind >= 0)
+ {
+ *shopt_vars[ind].value = 1;
+ if (shopt_vars[ind].set_func)
+ (*shopt_vars[ind].set_func) (shopt_vars[ind].name, 1);
+ }
+ free (vname);
+ }
+}
+
+void
+initialize_bashopts (no_bashopts)
+ int no_bashopts;
+{
+ char *temp;
+ SHELL_VAR *var;
+
+ if (no_bashopts == 0)
+ {
+ var = find_variable ("BASHOPTS");
+ /* set up any shell options we may have inherited. */
+ if (var && imported_p (var))
+ {
+ temp = (array_p (var) || assoc_p (var)) ? (char *)NULL : savestring (value_cell (var));
+ if (temp)
+ {
+ parse_bashopts (temp);
+ free (temp);
+ }
+ }
+ }
+
+ /* Set up the $BASHOPTS variable. */
+ set_bashopts ();
+}
+
+#if defined (ARRAY_VARS)
+static int
+set_assoc_expand (option_name, mode)
+ char *option_name;
+ int mode;
+{
+#if 0 /* leave this disabled */
+ if (shell_compatibility_level <= 51)
+#endif
+ assoc_expand_once = expand_once_flag;
+ return 0;
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-05 10:15:53 +0000