reflected in the history entry. We use the guts of
rl_maybe_replace_line to do the work. Fixes problem reported by
gregrwm <backuppc-users@whitleymott.net>
+
+ 12/30
+ -----
+sig.c
+ - sigint_sighandler: if we get a SIGINT (and this signal handler is
+ installed) while the wait builtin is running, note that we received
+ it in the same way as jobs.c:wait_sigint_handler and return. The
+ various wait_for functions will look for that with CHECK_WAIT_INTR.
+ This fixes the wait builtin not being interruptible in an interactive
+ job control shell
+
+ 12/31
+ -----
+trap.c
+ - set_signal_hard_ignored: rename set_signal_ignored to this, since it
+ both sets original_signals[sig] and sets the HARD_IGNORE flag
+ - set_signal_ignored: new function, now just sets original_signals[sig]
+
+trap.h
+ - set_signal_hard_ignored: new external declaration
+
+sig.c
+ - initialize_terminating_signals: call set_signal_hard_ignored instead
+ of set_signal_ignored for signals with disposition SIG_IGN when the
+ shell starts
+
+execute_cmd.c
+ - setup_async_signals: make sure we get the original dispositions for
+ SIGINT and SIGQUIT before starting the subshell, and don't call
+ set_signal_ignored because that sets original_signals[sig]. If we
+ don't, subsequent attempts to reset handling using trap will fail
+ because it thinks the original dispositions were SIG_IGN. Posix
+ interpretation 751 (http://austingroupbugs.net/view.php?id=751)
+
+ 1/2/2014
+ --------
+lib/sh/stringvec.c
+ - strvec_mcreate, strvec_mresize: versions of create and resize that
+ use malloc and realloc, respectively, instead of xmalloc/xrealloc
+
+braces.c
+ - expand_amble,mkseq: use strvec_mcreate/strvec_mresize so we can
+ catch and handle memory allocation failures instead of aborting
+ with the xmalloc/xrealloc interface
+
+lib/sh/strdup.c
+ - strdup replacement function for ancient systems that don't have it
+
+lib/sh/itos.c
+ - mitos: new function, itos that uses strdup instead of savestring
+
+externs.h
+ - strvec_mcreate/strvec_mresize: new extern declarations
+ - mitos: new extern declaration
+
+configure.ac
+ - bash version moved to 4.3-rc2
--- /dev/null
+Starting bash with the `--posix' command-line option or executing
+`set -o posix' while bash is running will cause bash to conform more
+closely to the Posix.2 standard by changing the behavior to match that
+specified by Posix.2 in areas where the bash default differs.
+
+The following list is what's changed when `posix mode' is in effect:
+
+1. When a command in the hash table no longer exists, bash will re-search
+ $PATH to find the new location. This is also available with
+ `shopt -s checkhash'.
+
+2. The >& redirection does not redirect stdout and stderr.
+
+3. The message printed by the job control code and builtins when a job
+ exits with a non-zero status is `Done(status)'.
+
+4. Reserved words may not be aliased.
+
+5. The Posix.2 PS1 and PS2 expansions of `!' -> history number and
+ `!!' -> `!' are enabled, and parameter expansion is performed on
+ the value regardless of the setting of the `promptvars' option.
+
+6. Interactive comments are enabled by default. (Note that bash has
+ them on by default anyway.)
+
+7. The Posix.2 startup files are executed ($ENV) rather than the normal
+ bash files.
+
+8. Tilde expansion is only performed on assignments preceding a command
+ name, rather than on all assignment statements on the line.
+
+9. The default history file is ~/.sh_history (default value of $HISTFILE).
+
+10. The output of `kill -l' prints all the signal names on a single line,
+ separated by spaces.
+
+11. Non-interactive shells exit if `file' in `. file' is not found.
+
+12. Redirection operators do not perform pathname expansion on the word
+ in the redirection unless the shell is interactive
+
+13. Function names must be valid shell identifiers. That is, they may not
+ contain characters other than letters, digits, and underscores, and
+ may not start with a digit. Declaring a function with an illegal name
+ causes a fatal syntax error in non-interactive shells.
+
+14. Posix.2 `special' builtins are found before shell functions during command
+ lookup.
+
+15. If a Posix.2 special builtin returns an error status, a non-interactive
+ shell exits. The fatal errors are those listed in the POSIX.2 standard,
+ and include things like passing incorrect options, redirection errors,
+ variable assignment errors for assignments preceding the command name,
+ and so on.
+
+16. The environment passed to executed commands is not sorted. Neither is
+ the output of `set'. This is not strictly Posix.2 behavior, but sh
+ does it this way. Ksh does not. It's not necessary to sort the
+ environment; no program should rely on it being sorted.
+
+17. If the `cd' builtin finds a directory to change to using $CDPATH, the
+ value it assigns to $PWD does not contain any symbolic links, as if
+ `cd -P' had been executed.
+
+18. A non-interactive shell exits with an error status if a variable
+ assignment error occurs when no command name follows the assignment
+ statements. A variable assignment error occurs, for example, when
+ trying to assign a value to a read-only variable.
+
+19. A non-interactive shell exits with an error status if the iteration
+ variable in a for statement or the selection variable in a select
+ statement is a read-only variable.
+
+20. Process substitution is not available.
+
+21. Assignment statements preceding POSIX.2 `special' builtins persist in
+ the shell environment after the builtin completes.
+
+There is other Posix.2 behavior that bash does not implement. Specifically:
+
+1. Assignment statements affect the execution environment of all builtins,
+ not just special ones.
--- /dev/null
+This file is set.def, from which is created set.c.
+It implements the "set" and "unset" builtins in Bash.
+
+Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
+
+This file is part of GNU Bash, the Bourne Again SHell.
+
+Bash is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 1, or (at your option) any later
+version.
+
+Bash is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with Bash; see the file COPYING. If not, write to the Free Software
+Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+$PRODUCES set.c
+
+#include <stdio.h>
+#include "../shell.h"
+#include "../flags.h"
+
+#include "bashgetopt.h"
+
+extern int interactive;
+extern int noclobber, posixly_correct;
+#if defined (READLINE)
+extern int rl_editing_mode, no_line_editing;
+#endif /* READLINE */
+
+$BUILTIN set
+$FUNCTION set_builtin
+$SHORT_DOC set [--abefhkmnptuvxldBCHP] [-o option] [arg ...]
+ -a Mark variables which are modified or created for export.
+ -b Notify of job termination immediately.
+ -e Exit immediately if a command exits with a non-zero status.
+ -f Disable file name generation (globbing).
+ -h Locate and remember function commands as functions are
+ defined. Function commands are normally looked up when
+ the function is executed.
+ -i Force the shell to be an "interactive" one. Interactive shells
+ always read `~/.bashrc' on startup.
+ -k All keyword arguments are placed in the environment for a
+ command, not just those that precede the command name.
+ -m Job control is enabled.
+ -n Read commands but do not execute them.
+ -o option-name
+ Set the variable corresponding to option-name:
+ allexport same as -a
+ braceexpand same as -B
+#if defined (READLINE)
+ emacs use an emacs-style line editing interface
+#endif /* READLINE */
+ errexit same as -e
+ histexpand same as -H
+ ignoreeof the shell will not exit upon reading EOF
+ interactive-comments
+ allow comments to appear in interactive commands
+ monitor same as -m
+ noclobber disallow redirection to existing files
+ noexec same as -n
+ noglob same as -f
+ nohash same as -d
+ notify save as -b
+ nounset same as -u
+ physical same as -P
+ posix change the behavior of bash where the default
+ operation differs from the 1003.2 standard to
+ match the standard
+ privileged same as -p
+ verbose same as -v
+#if defined (READLINE)
+ vi use a vi-style line editing interface
+#endif /* READLINE */
+ xtrace same as -x
+ -p Turned on whenever the real and effective user ids do not match.
+ Disables processing of the $ENV file and importing of shell
+ functions. Turning this option off causes the effective uid and
+ gid to be set to the real uid and gid.
+ -t Exit after reading and executing one command.
+ -u Treat unset variables as an error when substituting.
+ -v Print shell input lines as they are read.
+ -x Print commands and their arguments as they are executed.
+ -l Save and restore the binding of the NAME in a FOR command.
+ -d Disable the hashing of commands that are looked up for execution.
+ Normally, commands are remembered in a hash table, and once
+ found, do not have to be looked up again.
+#if defined (BRACE_EXPANSION)
+ -B the shell will perform brace expansion
+#endif /* BRACE_EXPANSION */
+#if defined (BANG_HISTORY)
+ -H Enable ! style history substitution. This flag is on
+ by default.
+#endif /* BANG_HISTORY */
+ -C If set, disallow existing regular files to be overwritten
+ by redirection of output.
+ -P If set, do not follow symbolic links when executing commands
+ such as cd which change the current directory.
+
+Using + rather than - causes these flags to be turned off. The
+flags can also be used upon invocation of the shell. The current
+set of flags may be found in $-. The remaining n ARGs are positional
+parameters and are assigned, in order, to $1, $2, .. $n. If no
+ARGs are given, all shell variables are printed.
+$END
+
+/* An a-list used to match long options for set -o to the corresponding
+ option letter. */
+struct {
+ char *name;
+ int letter;
+} o_options[] = {
+ { "allexport", 'a' },
+#if defined (BRACE_EXPANSION)
+ { "braceexpand",'B' },
+#endif
+ { "errexit", 'e' },
+ { "histexpand", 'H' },
+ { "monitor", 'm' },
+ { "noexec", 'n' },
+ { "noglob", 'f' },
+ { "nohash", 'd' },
+#if defined (JOB_CONTROL)
+ { "notify", 'b' },
+#endif /* JOB_CONTROL */
+ {"nounset", 'u' },
+ {"physical", 'P' },
+ {"privileged", 'p' },
+ {"verbose", 'v' },
+ {"xtrace", 'x' },
+ {(char *)NULL, 0},
+};
+
+#define MINUS_O_FORMAT "%-15s\t%s\n"
+
+void
+list_minus_o_opts ()
+{
+ register int i;
+ char *on = "on", *off = "off";
+
+ printf (MINUS_O_FORMAT, "noclobber", (noclobber == 1) ? on : off);
+
+ if (find_variable ("ignoreeof") || find_variable ("IGNOREEOF"))
+ printf (MINUS_O_FORMAT, "ignoreeof", on);
+ else
+ printf (MINUS_O_FORMAT, "ignoreeof", off);
+
+ printf (MINUS_O_FORMAT, "interactive-comments",
+ interactive_comments ? on : off);
+
+ printf (MINUS_O_FORMAT, "posix", posixly_correct ? on : off);
+
+#if defined (READLINE)
+ if (no_line_editing)
+ {
+ printf (MINUS_O_FORMAT, "emacs", off);
+ printf (MINUS_O_FORMAT, "vi", off);
+ }
+ else
+ {
+ /* Magic. This code `knows' how readline handles rl_editing_mode. */
+ printf (MINUS_O_FORMAT, "emacs", (rl_editing_mode == 1) ? on : off);
+ printf (MINUS_O_FORMAT, "vi", (rl_editing_mode == 0) ? on : off);
+ }
+#endif /* READLINE */
+
+ for (i = 0; o_options[i].name; i++)
+ {
+ int *on_or_off, zero = 0;
+
+ on_or_off = find_flag (o_options[i].letter);
+ if (on_or_off == FLAG_UNKNOWN)
+ on_or_off = &zero;
+ printf (MINUS_O_FORMAT, o_options[i].name, (*on_or_off == 1) ? on : off);
+ }
+}
+
+set_minus_o_option (on_or_off, option_name)
+ int on_or_off;
+ char *option_name;
+{
+ int option_char = -1;
+
+ if (STREQ (option_name, "noclobber"))
+ {
+ if (on_or_off == FLAG_ON)
+ bind_variable ("noclobber", "");
+ else
+ unbind_variable ("noclobber");
+ stupidly_hack_special_variables ("noclobber");
+ }
+ else if (STREQ (option_name, "ignoreeof"))
+ {
+ unbind_variable ("ignoreeof");
+ unbind_variable ("IGNOREEOF");
+ if (on_or_off == FLAG_ON)
+ bind_variable ("IGNOREEOF", "10");
+ stupidly_hack_special_variables ("IGNOREEOF");
+ }
+
+#if defined (READLINE)
+ else if ((STREQ (option_name, "emacs")) || (STREQ (option_name, "vi")))
+ {
+ if (on_or_off == FLAG_ON)
+ {
+ rl_variable_bind ("editing-mode", option_name);
+
+ if (interactive)
+ with_input_from_stdin ();
+ no_line_editing = 0;
+ }
+ else
+ {
+ int isemacs = (rl_editing_mode == 1);
+ if ((isemacs && STREQ (option_name, "emacs")) ||
+ (!isemacs && STREQ (option_name, "vi")))
+ {
+ if (interactive)
+ with_input_from_stream (stdin, "stdin");
+ no_line_editing = 1;
+ }
+ else
+ builtin_error ("not in %s editing mode", option_name);
+ }
+ }
+#endif /* READLINE */
+ else if (STREQ (option_name, "interactive-comments"))
+ interactive_comments = (on_or_off == FLAG_ON);
+ else if (STREQ (option_name, "posix"))
+ {
+ posixly_correct = (on_or_off == FLAG_ON);
+ unbind_variable ("POSIXLY_CORRECT");
+ unbind_variable ("POSIX_PEDANTIC");
+ if (on_or_off == FLAG_ON)
+ {
+ bind_variable ("POSIXLY_CORRECT", "");
+ stupidly_hack_special_variables ("POSIXLY_CORRECT");
+ }
+ }
+ else
+ {
+ register int i;
+ for (i = 0; o_options[i].name; i++)
+ {
+ if (STREQ (option_name, o_options[i].name))
+ {
+ option_char = o_options[i].letter;
+ break;
+ }
+ }
+ if (option_char == -1)
+ {
+ builtin_error ("%s: unknown option name", option_name);
+ return (EXECUTION_FAILURE);
+ }
+ if (change_flag (option_char, on_or_off) == FLAG_ERROR)
+ {
+ bad_option (option_name);
+ return (EXECUTION_FAILURE);
+ }
+ }
+ return (EXECUTION_SUCCESS);
+}
+
+/* Set some flags from the word values in the input list. If LIST is empty,
+ then print out the values of the variables instead. If LIST contains
+ non-flags, then set $1 - $9 to the successive words of LIST. */
+set_builtin (list)
+ WORD_LIST *list;
+{
+ int on_or_off, flag_name, force_assignment = 0;
+
+ if (!list)
+ {
+ SHELL_VAR **vars;
+
+ vars = all_shell_variables ();
+ if (vars)
+ {
+ print_var_list (vars);
+ free (vars);
+ }
+
+ vars = all_shell_functions ();
+ if (vars)
+ {
+ print_var_list (vars);
+ free (vars);
+ }
+
+ return (EXECUTION_SUCCESS);
+ }
+
+ /* Check validity of flag arguments. */
+ if (*list->word->word == '-' || *list->word->word == '+')
+ {
+ register char *arg;
+ WORD_LIST *save_list = list;
+
+ while (list && (arg = list->word->word))
+ {
+ char c;
+
+ if (arg[0] != '-' && arg[0] != '+')
+ break;
+
+ /* `-' or `--' signifies end of flag arguments. */
+ if (arg[0] == '-' &&
+ (!arg[1] || (arg[1] == '-' && !arg[2])))
+ break;
+
+ while (c = *++arg)
+ {
+ if (find_flag (c) == FLAG_UNKNOWN && c != 'o')
+ {
+ char s[2];
+ s[0] = c; s[1] = '\0';
+ bad_option (s);
+ if (c == '?')
+ builtin_usage ();
+ return (c == '?' ? EXECUTION_SUCCESS : EXECUTION_FAILURE);
+ }
+ }
+ list = list->next;
+ }
+ list = save_list;
+ }
+
+ /* Do the set command. While the list consists of words starting with
+ '-' or '+' treat them as flags, otherwise, start assigning them to
+ $1 ... $n. */
+ while (list)
+ {
+ char *string = list->word->word;
+
+ /* If the argument is `--' or `-' then signal the end of the list
+ and remember the remaining arguments. */
+ if (string[0] == '-' && (!string[1] || (string[1] == '-' && !string[2])))
+ {
+ list = list->next;
+
+ /* `set --' unsets the positional parameters. */
+ if (string[1] == '-')
+ force_assignment = 1;
+
+ /* Until told differently, the old shell behaviour of
+ `set - [arg ...]' being equivalent to `set +xv [arg ...]'
+ stands. Posix.2 says the behaviour is marked as obsolescent. */
+ else
+ {
+ change_flag ('x', '+');
+ change_flag ('v', '+');
+ }
+
+ break;
+ }
+
+ if ((on_or_off = *string) &&
+ (on_or_off == '-' || on_or_off == '+'))
+ {
+ int i = 1;
+ while (flag_name = string[i++])
+ {
+ if (flag_name == '?')
+ {
+ builtin_usage ();
+ return (EXECUTION_SUCCESS);
+ }
+ else if (flag_name == 'o') /* -+o option-name */
+ {
+ char *option_name;
+ WORD_LIST *opt;
+
+ opt = list->next;
+
+ if (!opt)
+ {
+ list_minus_o_opts ();
+ continue;
+ }
+
+ option_name = opt->word->word;
+
+ if (!option_name || !*option_name || (*option_name == '-'))
+ {
+ list_minus_o_opts ();
+ continue;
+ }
+ list = list->next; /* Skip over option name. */
+
+ if (set_minus_o_option (on_or_off, option_name) != EXECUTION_SUCCESS)
+ return (EXECUTION_FAILURE);
+ }
+ else
+ {
+ if (change_flag (flag_name, on_or_off) == FLAG_ERROR)
+ {
+ char opt[3];
+ opt[0] = on_or_off;
+ opt[1] = flag_name;
+ opt[2] = '\0';
+ bad_option (opt);
+ builtin_usage ();
+ return (EXECUTION_FAILURE);
+ }
+ }
+ }
+ }
+ else
+ {
+ break;
+ }
+ list = list->next;
+ }
+
+ /* Assigning $1 ... $n */
+ if (list || force_assignment)
+ remember_args (list, 1);
+ return (EXECUTION_SUCCESS);
+}
+
+$BUILTIN unset
+$FUNCTION unset_builtin
+$SHORT_DOC unset [-f] [-v] [name ...]
+For each NAME, remove the corresponding variable or function. Given
+the `-v', unset will only act on variables. Given the `-f' flag,
+unset will only act on functions. With neither flag, unset first
+tries to unset a variable, and if that fails, then tries to unset a
+function. Some variables (such as PATH and IFS) cannot be unset; also
+see readonly.
+$END
+
+#define NEXT_VARIABLE() any_failed++; list = list->next; continue;
+
+unset_builtin (list)
+ WORD_LIST *list;
+{
+ int unset_function, unset_variable, unset_array, opt, any_failed;
+ char *name;
+
+ unset_function = unset_variable = unset_array = any_failed = 0;
+
+ reset_internal_getopt ();
+ while ((opt = internal_getopt (list, "fv")) != -1)
+ {
+ switch (opt)
+ {
+ case 'f':
+ unset_function = 1;
+ break;
+ case 'v':
+ unset_variable = 1;
+ break;
+ default:
+ builtin_usage ();
+ return (EXECUTION_FAILURE);
+ }
+ }
+
+ list = loptend;
+
+ if (unset_function && unset_variable)
+ {
+ builtin_error ("cannot simultaneously unset a function and a variable");
+ return (EXECUTION_FAILURE);
+ }
+
+ while (list)
+ {
+ SHELL_VAR *var;
+ int tem;
+#if defined (ARRAY_VARS)
+ char *t;
+#endif
+
+ name = list->word->word;
+
+#if defined (ARRAY_VARS)
+ if (!unset_function && valid_array_reference (name))
+ {
+ t = strchr (name, '[');
+ *t++ = '\0';
+ unset_array++;
+ }
+#endif
+
+ var = unset_function ? find_function (name) : find_variable (name);
+
+ if (var && !unset_function && non_unsettable_p (var))
+ {
+ builtin_error ("%s: cannot unset", name);
+ NEXT_VARIABLE ();
+ }
+
+ /* Posix.2 says that unsetting readonly variables is an error. */
+ if (var && readonly_p (var))
+ {
+ builtin_error ("%s: cannot unset: readonly %s",
+ name, unset_function ? "function" : "variable");
+ NEXT_VARIABLE ();
+ }
+
+ /* Unless the -f option is supplied, the name refers to a variable. */
+#if defined (ARRAY_VARS)
+ if (var && unset_array)
+ {
+ if (array_p (var) == 0)
+ {
+ builtin_error ("%s: not an array variable", name);
+ NEXT_VARIABLE ();
+ }
+ else
+ tem = unbind_array_element (var, t);
+ }
+ else
+#endif /* ARRAY_VARS */
+ tem = makunbound (name, unset_function ? shell_functions : shell_variables);
+
+ /* This is what Posix.2 draft 11+ says. ``If neither -f nor -v
+ is specified, the name refers to a variable; if a variable by
+ that name does not exist, a function by that name, if any,
+ shall be unset.'' */
+ if ((tem == -1) && !unset_function && !unset_variable)
+ tem = makunbound (name, shell_functions);
+
+ if (tem == -1)
+ any_failed++;
+ else if (!unset_function)
+ stupidly_hack_special_variables (name);
+
+ list = list->next;
+ }
+
+ if (any_failed)
+ return (EXECUTION_FAILURE);
+ else
+ return (EXECUTION_SUCCESS);
+}
--- /dev/null
+/* unwind_prot.h - Macros and functions for hacking unwind protection. */
+
+/* Copyright (C) 1993 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 2, 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; see the file COPYING. If not, write to the Free Software
+ Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_UNWIND_PROT_H)
+#define _UNWIND_PROT_H
+
+/* Run a function without interrupts. */
+extern void begin_unwind_frame ();
+extern void discard_unwind_frame ();
+extern void run_unwind_frame ();
+extern void add_unwind_protect ();
+extern void remove_unwind_protect ();
+extern void run_unwind_protects ();
+extern void unwind_protect_var ();
+
+/* Define for people who like their code to look a certain way. */
+#define end_unwind_frame()
+
+/* How to protect an integer. */
+#define unwind_protect_int(X) unwind_protect_var (&(X), (char *)(X), sizeof (int))
+
+/* How to protect a pointer to a string. */
+#define unwind_protect_string(X) \
+ unwind_protect_var ((int *)&(X), (X), sizeof (char *))
+
+/* How to protect any old pointer. */
+#define unwind_protect_pointer(X) unwind_protect_string (X)
+
+/* How to protect the contents of a jmp_buf. */
+#define unwind_protect_jmp_buf(X) \
+ unwind_protect_var ((int *)(X), (char *)(X), sizeof (procenv_t))
+
+#endif /* _UNWIND_PROT_H */
lib/sh/strcasecmp.c f
lib/sh/strcasestr.c f
lib/sh/strchrnul.c f
+lib/sh/strdup.c f
lib/sh/strerror.c f
lib/sh/strftime.c f
lib/sh/stringlist.c f
SHLIB_SOURCE = ${SH_LIBSRC}/clktck.c ${SH_LIBSRC}/getcwd.c \
${SH_LIBSRC}/getenv.c ${SH_LIBSRC}/oslib.c \
${SH_LIBSRC}/setlinebuf.c ${SH_LIBSRC}/strchrnul.c \
- ${SH_LIBSRC}/strcasecmp.c ${SH_LIBSRC}/strerror.c \
+ ${SH_LIBSRC}/strcasecmp.c ${SH_LIBSRC}/strdup.c \
+ ${SH_LIBSRC}/strerror.c \
${SH_LIBSRC}/strtod.c ${SH_LIBSRC}/strtol.c \
${SH_LIBSRC}/strtoul.c ${SH_LIBSRC}/vprint.c \
${SH_LIBSRC}/itos.c ${SH_LIBSRC}/rename.c \
@%:@! /bin/sh
-@%:@ From configure.ac for Bash 4.3, version 4.061.
+@%:@ From configure.ac for Bash 4.3, version 4.062.
@%:@ Guess values for system-dependent variables and create Makefiles.
-@%:@ Generated by GNU Autoconf 2.69 for bash 4.3-rc1.
+@%:@ Generated by GNU Autoconf 2.69 for bash 4.3-rc2.
@%:@
@%:@ Report bugs to <bug-bash@gnu.org>.
@%:@
# Identity of this package.
PACKAGE_NAME='bash'
PACKAGE_TARNAME='bash'
-PACKAGE_VERSION='4.3-rc1'
-PACKAGE_STRING='bash 4.3-rc1'
+PACKAGE_VERSION='4.3-rc2'
+PACKAGE_STRING='bash 4.3-rc2'
PACKAGE_BUGREPORT='bug-bash@gnu.org'
PACKAGE_URL=''
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
-\`configure' configures bash 4.3-rc1 to adapt to many kinds of systems.
+\`configure' configures bash 4.3-rc2 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
if test -n "$ac_init_help"; then
case $ac_init_help in
- short | recursive ) echo "Configuration of bash 4.3-rc1:";;
+ short | recursive ) echo "Configuration of bash 4.3-rc2:";;
esac
cat <<\_ACEOF
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
-bash configure 4.3-rc1
+bash configure 4.3-rc2
generated by GNU Autoconf 2.69
Copyright (C) 2012 Free Software Foundation, Inc.
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
-It was created by bash $as_me 4.3-rc1, which was
+It was created by bash $as_me 4.3-rc2, which was
generated by GNU Autoconf 2.69. Invocation command line was
$ $0 $@
BASHVERS=4.3
-RELSTATUS=rc1
+RELSTATUS=rc2
case "$RELSTATUS" in
alp*|bet*|dev*|rc*|maint*) DEBUG='-DDEBUG' MALLOC_DEBUG='-DMALLOC_DEBUG' ;;
fi
+ac_fn_c_check_func "$LINENO" "strdup" "ac_cv_func_strdup"
+if test "x$ac_cv_func_strdup" = xyes; then :
+ $as_echo "@%:@define HAVE_STRDUP 1" >>confdefs.h
+
+else
+ case " $LIB@&t@OBJS " in
+ *" strdup.$ac_objext "* ) ;;
+ *) LIB@&t@OBJS="$LIB@&t@OBJS strdup.$ac_objext"
+ ;;
+esac
+
+fi
+
+
ac_fn_c_check_decl "$LINENO" "AUDIT_USER_TTY" "ac_cv_have_decl_AUDIT_USER_TTY" "#include <linux/audit.h>
"
rm -f conftest.mmap conftest.txt
for ac_func in __argz_count __argz_next __argz_stringify dcgettext mempcpy \
- munmap stpcpy strcspn strdup
+ munmap stpcpy strcspn
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
-This file was extended by bash $as_me 4.3-rc1, which was
+This file was extended by bash $as_me 4.3-rc2, which was
generated by GNU Autoconf 2.69. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
ac_cs_version="\\
-bash config.status 4.3-rc1
+bash config.status 4.3-rc2
configured by $0, generated by GNU Autoconf 2.69,
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../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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-m4trace:configure.ac:942: -1- m4_pattern_allow([^VOID_SIGHANDLER$])
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-m4trace:configure.ac:943: -1- m4_pattern_allow([^clock_t$])
-m4trace:configure.ac:944: -1- AC_DEFINE_TRACE_LITERAL([sigset_t])
-m4trace:configure.ac:944: -1- m4_pattern_allow([^sigset_t$])
-m4trace:configure.ac:945: -1- AC_DEFINE_TRACE_LITERAL([sig_atomic_t])
-m4trace:configure.ac:945: -1- m4_pattern_allow([^sig_atomic_t$])
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-m4trace:configure.ac:946: -1- AC_DEFINE_TRACE_LITERAL([quad_t])
-m4trace:configure.ac:946: -1- m4_pattern_allow([^quad_t$])
-m4trace:configure.ac:947: -1- AC_DEFINE_TRACE_LITERAL([intmax_t])
-m4trace:configure.ac:947: -1- m4_pattern_allow([^intmax_t$])
-m4trace:configure.ac:948: -1- AC_DEFINE_TRACE_LITERAL([uintmax_t])
-m4trace:configure.ac:948: -1- m4_pattern_allow([^uintmax_t$])
-m4trace:configure.ac:950: -1- AC_DEFINE_TRACE_LITERAL([HAVE_SOCKLEN_T])
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-m4trace:configure.ac:950: -1- m4_pattern_allow([^socklen_t$])
-m4trace:configure.ac:952: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
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You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
../../lib/autoconf/general.m4:2590: _AC_COMPILE_IFELSE is expanded from...
../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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-m4trace:configure.ac:952: -1- m4_pattern_allow([^RLIMTYPE$])
-m4trace:configure.ac:954: -1- AC_DEFINE_TRACE_LITERAL([SIZEOF_INTMAX_T])
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../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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aclocal.m4:1173: BASH_STRUCT_WINSIZE is expanded from...
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../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
../../lib/autoconf/general.m4:2590: _AC_COMPILE_IFELSE is expanded from...
../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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-m4trace:configure.ac:1198: -1- AC_SUBST([LOCAL_DEFS])
-m4trace:configure.ac:1198: -1- AC_SUBST_TRACE([LOCAL_DEFS])
-m4trace:configure.ac:1198: -1- m4_pattern_allow([^LOCAL_DEFS$])
-m4trace:configure.ac:1203: -1- AC_CONFIG_FILES([Makefile builtins/Makefile lib/readline/Makefile lib/glob/Makefile \
+m4trace:configure.ac:1068: -1- AC_DEFINE_TRACE_LITERAL([SVR4])
+m4trace:configure.ac:1068: -1- m4_pattern_allow([^SVR4$])
+m4trace:configure.ac:1069: -1- AC_DEFINE_TRACE_LITERAL([SVR5])
+m4trace:configure.ac:1069: -1- m4_pattern_allow([^SVR5$])
+m4trace:configure.ac:1088: -1- AC_DEFINE_TRACE_LITERAL([PGRP_PIPE])
+m4trace:configure.ac:1088: -1- m4_pattern_allow([^PGRP_PIPE$])
+m4trace:configure.ac:1136: -1- AC_SUBST([SHOBJ_CC])
+m4trace:configure.ac:1136: -1- AC_SUBST_TRACE([SHOBJ_CC])
+m4trace:configure.ac:1136: -1- m4_pattern_allow([^SHOBJ_CC$])
+m4trace:configure.ac:1137: -1- AC_SUBST([SHOBJ_CFLAGS])
+m4trace:configure.ac:1137: -1- AC_SUBST_TRACE([SHOBJ_CFLAGS])
+m4trace:configure.ac:1137: -1- m4_pattern_allow([^SHOBJ_CFLAGS$])
+m4trace:configure.ac:1138: -1- AC_SUBST([SHOBJ_LD])
+m4trace:configure.ac:1138: -1- AC_SUBST_TRACE([SHOBJ_LD])
+m4trace:configure.ac:1138: -1- m4_pattern_allow([^SHOBJ_LD$])
+m4trace:configure.ac:1139: -1- AC_SUBST([SHOBJ_LDFLAGS])
+m4trace:configure.ac:1139: -1- AC_SUBST_TRACE([SHOBJ_LDFLAGS])
+m4trace:configure.ac:1139: -1- m4_pattern_allow([^SHOBJ_LDFLAGS$])
+m4trace:configure.ac:1140: -1- AC_SUBST([SHOBJ_XLDFLAGS])
+m4trace:configure.ac:1140: -1- AC_SUBST_TRACE([SHOBJ_XLDFLAGS])
+m4trace:configure.ac:1140: -1- m4_pattern_allow([^SHOBJ_XLDFLAGS$])
+m4trace:configure.ac:1141: -1- AC_SUBST([SHOBJ_LIBS])
+m4trace:configure.ac:1141: -1- AC_SUBST_TRACE([SHOBJ_LIBS])
+m4trace:configure.ac:1141: -1- m4_pattern_allow([^SHOBJ_LIBS$])
+m4trace:configure.ac:1142: -1- AC_SUBST([SHOBJ_STATUS])
+m4trace:configure.ac:1142: -1- AC_SUBST_TRACE([SHOBJ_STATUS])
+m4trace:configure.ac:1142: -1- m4_pattern_allow([^SHOBJ_STATUS$])
+m4trace:configure.ac:1174: -1- AC_SUBST([PROFILE_FLAGS])
+m4trace:configure.ac:1174: -1- AC_SUBST_TRACE([PROFILE_FLAGS])
+m4trace:configure.ac:1174: -1- m4_pattern_allow([^PROFILE_FLAGS$])
+m4trace:configure.ac:1176: -1- AC_SUBST([incdir])
+m4trace:configure.ac:1176: -1- AC_SUBST_TRACE([incdir])
+m4trace:configure.ac:1176: -1- m4_pattern_allow([^incdir$])
+m4trace:configure.ac:1177: -1- AC_SUBST([BUILD_DIR])
+m4trace:configure.ac:1177: -1- AC_SUBST_TRACE([BUILD_DIR])
+m4trace:configure.ac:1177: -1- m4_pattern_allow([^BUILD_DIR$])
+m4trace:configure.ac:1180: -1- AC_SUBST([datarootdir])
+m4trace:configure.ac:1180: -1- AC_SUBST_TRACE([datarootdir])
+m4trace:configure.ac:1180: -1- m4_pattern_allow([^datarootdir$])
+m4trace:configure.ac:1181: -1- AC_SUBST([localedir])
+m4trace:configure.ac:1181: -1- AC_SUBST_TRACE([localedir])
+m4trace:configure.ac:1181: -1- m4_pattern_allow([^localedir$])
+m4trace:configure.ac:1183: -1- AC_SUBST([YACC])
+m4trace:configure.ac:1183: -1- AC_SUBST_TRACE([YACC])
+m4trace:configure.ac:1183: -1- m4_pattern_allow([^YACC$])
+m4trace:configure.ac:1184: -1- AC_SUBST([AR])
+m4trace:configure.ac:1184: -1- AC_SUBST_TRACE([AR])
+m4trace:configure.ac:1184: -1- m4_pattern_allow([^AR$])
+m4trace:configure.ac:1185: -1- AC_SUBST([ARFLAGS])
+m4trace:configure.ac:1185: -1- AC_SUBST_TRACE([ARFLAGS])
+m4trace:configure.ac:1185: -1- m4_pattern_allow([^ARFLAGS$])
+m4trace:configure.ac:1187: -1- AC_SUBST([BASHVERS])
+m4trace:configure.ac:1187: -1- AC_SUBST_TRACE([BASHVERS])
+m4trace:configure.ac:1187: -1- m4_pattern_allow([^BASHVERS$])
+m4trace:configure.ac:1188: -1- AC_SUBST([RELSTATUS])
+m4trace:configure.ac:1188: -1- AC_SUBST_TRACE([RELSTATUS])
+m4trace:configure.ac:1188: -1- m4_pattern_allow([^RELSTATUS$])
+m4trace:configure.ac:1189: -1- AC_SUBST([DEBUG])
+m4trace:configure.ac:1189: -1- AC_SUBST_TRACE([DEBUG])
+m4trace:configure.ac:1189: -1- m4_pattern_allow([^DEBUG$])
+m4trace:configure.ac:1190: -1- AC_SUBST([MALLOC_DEBUG])
+m4trace:configure.ac:1190: -1- AC_SUBST_TRACE([MALLOC_DEBUG])
+m4trace:configure.ac:1190: -1- m4_pattern_allow([^MALLOC_DEBUG$])
+m4trace:configure.ac:1192: -1- AC_SUBST([host_cpu])
+m4trace:configure.ac:1192: -1- AC_SUBST_TRACE([host_cpu])
+m4trace:configure.ac:1192: -1- m4_pattern_allow([^host_cpu$])
+m4trace:configure.ac:1193: -1- AC_SUBST([host_vendor])
+m4trace:configure.ac:1193: -1- AC_SUBST_TRACE([host_vendor])
+m4trace:configure.ac:1193: -1- m4_pattern_allow([^host_vendor$])
+m4trace:configure.ac:1194: -1- AC_SUBST([host_os])
+m4trace:configure.ac:1194: -1- AC_SUBST_TRACE([host_os])
+m4trace:configure.ac:1194: -1- m4_pattern_allow([^host_os$])
+m4trace:configure.ac:1196: -1- AC_SUBST([LOCAL_LIBS])
+m4trace:configure.ac:1196: -1- AC_SUBST_TRACE([LOCAL_LIBS])
+m4trace:configure.ac:1196: -1- m4_pattern_allow([^LOCAL_LIBS$])
+m4trace:configure.ac:1197: -1- AC_SUBST([LOCAL_CFLAGS])
+m4trace:configure.ac:1197: -1- AC_SUBST_TRACE([LOCAL_CFLAGS])
+m4trace:configure.ac:1197: -1- m4_pattern_allow([^LOCAL_CFLAGS$])
+m4trace:configure.ac:1198: -1- AC_SUBST([LOCAL_LDFLAGS])
+m4trace:configure.ac:1198: -1- AC_SUBST_TRACE([LOCAL_LDFLAGS])
+m4trace:configure.ac:1198: -1- m4_pattern_allow([^LOCAL_LDFLAGS$])
+m4trace:configure.ac:1199: -1- AC_SUBST([LOCAL_DEFS])
+m4trace:configure.ac:1199: -1- AC_SUBST_TRACE([LOCAL_DEFS])
+m4trace:configure.ac:1199: -1- m4_pattern_allow([^LOCAL_DEFS$])
+m4trace:configure.ac:1204: -1- AC_CONFIG_FILES([Makefile builtins/Makefile lib/readline/Makefile lib/glob/Makefile \
lib/intl/Makefile \
lib/malloc/Makefile lib/sh/Makefile lib/termcap/Makefile \
lib/tilde/Makefile doc/Makefile support/Makefile po/Makefile.in \
examples/loadables/Makefile examples/loadables/perl/Makefile])
-m4trace:configure.ac:1203: -1- _m4_warn([obsolete], [AC_OUTPUT should be used without arguments.
+m4trace:configure.ac:1204: -1- _m4_warn([obsolete], [AC_OUTPUT should be used without arguments.
You should run autoupdate.], [])
-m4trace:configure.ac:1203: -1- AC_SUBST([LIB@&t@OBJS], [$ac_libobjs])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([LIB@&t@OBJS])
-m4trace:configure.ac:1203: -1- m4_pattern_allow([^LIB@&t@OBJS$])
-m4trace:configure.ac:1203: -1- AC_SUBST([LTLIBOBJS], [$ac_ltlibobjs])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([LTLIBOBJS])
-m4trace:configure.ac:1203: -1- m4_pattern_allow([^LTLIBOBJS$])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([top_builddir])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([top_build_prefix])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([srcdir])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([abs_srcdir])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([top_srcdir])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([abs_top_srcdir])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([builddir])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([abs_builddir])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([abs_top_builddir])
-m4trace:configure.ac:1203: -1- AC_SUBST_TRACE([INSTALL])
+m4trace:configure.ac:1204: -1- AC_SUBST([LIB@&t@OBJS], [$ac_libobjs])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([LIB@&t@OBJS])
+m4trace:configure.ac:1204: -1- m4_pattern_allow([^LIB@&t@OBJS$])
+m4trace:configure.ac:1204: -1- AC_SUBST([LTLIBOBJS], [$ac_ltlibobjs])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([LTLIBOBJS])
+m4trace:configure.ac:1204: -1- m4_pattern_allow([^LTLIBOBJS$])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([top_builddir])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([top_build_prefix])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([srcdir])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([abs_srcdir])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([top_srcdir])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([abs_top_srcdir])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([builddir])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([abs_builddir])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([abs_top_builddir])
+m4trace:configure.ac:1204: -1- AC_SUBST_TRACE([INSTALL])
#include <errno.h>
#include "bashansi.h"
+#include "bashintl.h"
#if defined (SHELL)
# include "shell.h"
size_t tlen;
int flags;
{
- char **result, **partial;
+ char **result, **partial, **tresult;
char *tem;
int start, i, c;
lr = strvec_len (result);
lp = strvec_len (partial);
- result = strvec_resize (result, lp + lr + 1);
+ tresult = strvec_mresize (result, lp + lr + 1);
+ if (tresult == 0)
+ {
+ internal_error (_("brace expansion: cannot allocate memory for %s"), tem);
+ strvec_dispose (result);
+ result = (char **)NULL;
+ return result;
+ }
+ else
+ result = tresult;
for (j = 0; j < lp; j++)
result[lr + j] = partial[j];
int type, width;
{
intmax_t n, prevn;
- int i, nelem;
+ int i, j, nelem;
char **result, *t;
if (incr == 0)
nelem = (prevn / sh_imaxabs(incr)) + 1;
if (nelem > INT_MAX - 2) /* Don't overflow int */
return ((char **)NULL);
- result = strvec_create (nelem + 1);
+ result = strvec_mcreate (nelem + 1);
+ if (result == 0)
+ {
+ internal_error (_("brace expansion: failed to allocate memory for %d elements"), nelem);
+ return ((char **)NULL);
+ }
/* Make sure we go through the loop at least once, so {3..3} prints `3' */
i = 0;
QUIT; /* XXX - memory leak here */
#endif
if (type == ST_INT)
- result[i++] = itos (n);
+ result[i++] = t = itos (n);
else if (type == ST_ZINT)
{
int len, arg;
}
else
{
- t = (char *)xmalloc (2);
- t[0] = n;
- t[1] = '\0';
+ if (t = (char *)malloc (2))
+ {
+ t[0] = n;
+ t[1] = '\0';
+ }
result[i++] = t;
}
+ /* We failed to allocate memory for this number, so we bail. */
+ if (t == 0)
+ {
+ char *p, lbuf[INT_STRLEN_BOUND(intmax_t) + 1];
+
+ /* Easier to do this than mess around with various intmax_t printf
+ formats (%ld? %lld? %jd?) and PRIdMAX. */
+ p = inttostr (n, lbuf, sizeof (lbuf));
+ internal_error (_("brace expansion: failed to allocate memory for `%s'"), p);
+ strvec_dispose (result);
+ return ((char **)NULL);
+ }
+
/* Handle overflow and underflow of n+incr */
if (ADDOVERFLOW (n, incr, INTMAX_MIN, INTMAX_MAX))
break;
/* If we remove this, get rid of `s'. */
if (*fmt != 'b' && *fmt != 'q')
{
- internal_error ("format parsing problem: %s", s);
+ internal_error (_("format parsing problem: %s"), s);
fw = pr = 0;
}
#endif
#! /bin/sh
-# From configure.ac for Bash 4.3, version 4.061.
+# From configure.ac for Bash 4.3, version 4.062.
# Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for bash 4.3-rc1.
+# Generated by GNU Autoconf 2.69 for bash 4.3-rc2.
#
# Report bugs to <bug-bash@gnu.org>.
#
# Identity of this package.
PACKAGE_NAME='bash'
PACKAGE_TARNAME='bash'
-PACKAGE_VERSION='4.3-rc1'
-PACKAGE_STRING='bash 4.3-rc1'
+PACKAGE_VERSION='4.3-rc2'
+PACKAGE_STRING='bash 4.3-rc2'
PACKAGE_BUGREPORT='bug-bash@gnu.org'
PACKAGE_URL=''
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
-\`configure' configures bash 4.3-rc1 to adapt to many kinds of systems.
+\`configure' configures bash 4.3-rc2 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
if test -n "$ac_init_help"; then
case $ac_init_help in
- short | recursive ) echo "Configuration of bash 4.3-rc1:";;
+ short | recursive ) echo "Configuration of bash 4.3-rc2:";;
esac
cat <<\_ACEOF
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
-bash configure 4.3-rc1
+bash configure 4.3-rc2
generated by GNU Autoconf 2.69
Copyright (C) 2012 Free Software Foundation, Inc.
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
-It was created by bash $as_me 4.3-rc1, which was
+It was created by bash $as_me 4.3-rc2, which was
generated by GNU Autoconf 2.69. Invocation command line was
$ $0 $@
BASHVERS=4.3
-RELSTATUS=rc1
+RELSTATUS=rc2
case "$RELSTATUS" in
alp*|bet*|dev*|rc*|maint*) DEBUG='-DDEBUG' MALLOC_DEBUG='-DMALLOC_DEBUG' ;;
fi
+ac_fn_c_check_func "$LINENO" "strdup" "ac_cv_func_strdup"
+if test "x$ac_cv_func_strdup" = xyes; then :
+ $as_echo "#define HAVE_STRDUP 1" >>confdefs.h
+
+else
+ case " $LIBOBJS " in
+ *" strdup.$ac_objext "* ) ;;
+ *) LIBOBJS="$LIBOBJS strdup.$ac_objext"
+ ;;
+esac
+
+fi
+
+
ac_fn_c_check_decl "$LINENO" "AUDIT_USER_TTY" "ac_cv_have_decl_AUDIT_USER_TTY" "#include <linux/audit.h>
"
rm -f conftest.mmap conftest.txt
for ac_func in __argz_count __argz_next __argz_stringify dcgettext mempcpy \
- munmap stpcpy strcspn strdup
+ munmap stpcpy strcspn
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
-This file was extended by bash $as_me 4.3-rc1, which was
+This file was extended by bash $as_me 4.3-rc2, which was
generated by GNU Autoconf 2.69. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
ac_cs_version="\\
-bash config.status 4.3-rc1
+bash config.status 4.3-rc2
configured by $0, generated by GNU Autoconf 2.69,
with options \\"\$ac_cs_config\\"
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
-AC_REVISION([for Bash 4.3, version 4.061])dnl
+AC_REVISION([for Bash 4.3, version 4.062])dnl
define(bashvers, 4.3)
-define(relstatus, rc1)
+define(relstatus, rc2)
AC_INIT([bash], bashvers-relstatus, [bug-bash@gnu.org])
AC_REPLACE_FUNCS(strtod strtol strtoul strtoll strtoull strtoimax strtoumax)
AC_REPLACE_FUNCS(dprintf)
AC_REPLACE_FUNCS(strchrnul)
+AC_REPLACE_FUNCS(strdup)
AC_CHECK_DECLS([AUDIT_USER_TTY],,, [[#include <linux/audit.h>]])
dnl AC_FUNC_MALLOC
AC_FUNC_MMAP
AC_CHECK_FUNCS([__argz_count __argz_next __argz_stringify dcgettext mempcpy \
- munmap stpcpy strcspn strdup])
+ munmap stpcpy strcspn])
INTL_DEP= INTL_INC= LIBINTL_H=
if test "x$USE_INCLUDED_LIBINTL" = "xyes"; then
--- /dev/null
+# This file is a shell script that caches the results of configure
+# tests for CYGWIN32 so they don't need to be done when cross-compiling.
+
+# AC_FUNC_GETPGRP should also define GETPGRP_VOID
+ac_cv_func_getpgrp_void=${ac_cv_func_getpgrp_void='yes'}
+# AC_FUNC_SETVBUF_REVERSED should not define anything else
+ac_cv_func_setvbuf_reversed=${ac_cv_func_setvbuf_reversed='no'}
+# on CYGWIN32, system calls do not restart
+ac_cv_sys_restartable_syscalls=${ac_cv_sys_restartable_syscalls='no'}
+bash_cv_sys_restartable_syscalls=${bash_cv_sys_restartable_syscalls='no'}
+
+# these may be necessary, but they are currently commented out
+#ac_cv_c_bigendian=${ac_cv_c_bigendian='no'}
+ac_cv_sizeof_char_p=${ac_cv_sizeof_char_p='4'}
+ac_cv_sizeof_int=${ac_cv_sizeof_int='4'}
+ac_cv_sizeof_long=${ac_cv_sizeof_long='4'}
+ac_cv_sizeof_double=${ac_cv_sizeof_double='8'}
+
+bash_cv_dup2_broken=${bash_cv_dup2_broken='no'}
+bash_cv_pgrp_pipe=${bash_cv_pgrp_pipe='no'}
+bash_cv_type_rlimit=${bash_cv_type_rlimit='long'}
+bash_cv_decl_under_sys_siglist=${bash_cv_decl_under_sys_siglist='no'}
+bash_cv_under_sys_siglist=${bash_cv_under_sys_siglist='no'}
+bash_cv_sys_siglist=${bash_cv_sys_siglist='no'}
+bash_cv_opendir_not_robust=${bash_cv_opendir_not_robust='no'}
+bash_cv_getenv_redef=${bash_cv_getenv_redef='yes'}
+bash_cv_printf_declared=${bash_cv_printf_declared='yes'}
+bash_cv_ulimit_maxfds=${bash_cv_ulimit_maxfds='no'}
+bash_cv_getcwd_calls_popen=${bash_cv_getcwd_calls_popen='no'}
+bash_cv_must_reinstall_sighandlers=${bash_cv_must_reinstall_sighandlers='no'}
+bash_cv_job_control_missing=${bash_cv_job_control_missing='present'}
+bash_cv_sys_named_pipes=${bash_cv_sys_named_pipes='missing'}
+bash_cv_func_sigsetjmp=${bash_cv_func_sigsetjmp='missing'}
+bash_cv_mail_dir=${bash_cv_mail_dir='unknown'}
+bash_cv_func_strcoll_broken=${bash_cv_func_strcoll_broken='no'}
+
+bash_cv_type_int32_t=${bash_cv_type_int32_t='int'}
+bash_cv_type_u_int32_t=${bash_cv_type_u_int32_t='int'}
+
+ac_cv_type_bits64_t=${ac_cv_type_bits64_t='no'}
+
+# end of cross-build/cygwin32.cache
--- /dev/null
+This is the Bash FAQ, version 3.24, for Bash version 2.05b.
+
+This document contains a set of frequently-asked questions concerning
+Bash, the GNU Bourne-Again Shell. Bash is a freely-available command
+interpreter with advanced features for both interactive use and shell
+programming.
+
+Another good source of basic information about shells is the collection
+of FAQ articles periodically posted to comp.unix.shell.
+
+Questions and comments concerning this document should be sent to
+chet@po.cwru.edu.
+
+This document is available for anonymous FTP with the URL
+
+ftp://ftp.cwru.edu/pub/bash/FAQ
+
+The Bash home page is http://cnswww.cns.cwru.edu/~chet/bash/bashtop.html
+
+----------
+Contents:
+
+Section A: The Basics
+
+A1) What is it?
+A2) What's the latest version?
+A3) Where can I get it?
+A4) On what machines will bash run?
+A5) Will bash run on operating systems other than Unix?
+A6) How can I build bash with gcc?
+A7) How can I make bash my login shell?
+A8) I just changed my login shell to bash, and now I can't FTP into my
+ machine. Why not?
+A9) What's the `POSIX 1003.2 standard'?
+A10) What is the bash `posix mode'?
+
+Section B: The latest version
+
+B1) What's new in version 2.05b?
+B2) Are there any user-visible incompatibilities between bash-2.05b and
+ bash-1.14.7?
+
+Section C: Differences from other Unix shells
+
+C1) How does bash differ from sh, the Bourne shell?
+C2) How does bash differ from the Korn shell, version ksh88?
+C3) Which new features in ksh-93 are not in bash, and which are?
+
+Section D: Why does bash do some things differently than other Unix shells?
+
+D1) Why does bash run a different version of `command' than
+ `which command' says it will?
+D2) Why doesn't bash treat brace expansions exactly like csh?
+D3) Why doesn't bash have csh variable modifiers?
+D4) How can I make my csh aliases work when I convert to bash?
+D5) How can I pipe standard output and standard error from one command to
+ another, like csh does with `|&'?
+D6) Now that I've converted from ksh to bash, are there equivalents to
+ ksh features like autoloaded functions and the `whence' command?
+
+Section E: Why does bash do certain things the way it does?
+
+E1) Why is the bash builtin `test' slightly different from /bin/test?
+E2) Why does bash sometimes say `Broken pipe'?
+E3) When I have terminal escape sequences in my prompt, why does bash
+ wrap lines at the wrong column?
+E4) If I pipe the output of a command into `read variable', why doesn't
+ the output show up in $variable when the read command finishes?
+E5) I have a bunch of shell scripts that use backslash-escaped characters
+ in arguments to `echo'. Bash doesn't interpret these characters. Why
+ not, and how can I make it understand them?
+E6) Why doesn't a while or for loop get suspended when I type ^Z?
+E7) What about empty for loops in Makefiles?
+E8) Why does the arithmetic evaluation code complain about `08'?
+E9) Why does the pattern matching expression [A-Z]* match files beginning
+ with every letter except `z'?
+E10) Why does `cd //' leave $PWD as `//'?
+E11) If I resize my xterm while another program is running, why doesn't bash
+ notice the change?
+
+Section F: Things to watch out for on certain Unix versions
+
+F1) Why can't I use command line editing in my `cmdtool'?
+F2) I built bash on Solaris 2. Why do globbing expansions and filename
+ completion chop off the first few characters of each filename?
+F3) Why does bash dump core after I interrupt username completion or
+ `~user' tilde expansion on a machine running NIS?
+F4) I'm running SVR4.2. Why is the line erased every time I type `@'?
+F5) Why does bash report syntax errors when my C News scripts use a
+ redirection before a subshell command?
+F6) Why can't I use vi-mode editing on Red Hat Linux 6.1?
+F7) Why do bash-2.05a and bash-2.05b fail to compile `printf.def' on
+ HP/UX 11.x?
+
+Section G: How can I get bash to do certain common things?
+
+G1) How can I get bash to read and display eight-bit characters?
+G2) How do I write a function `x' to replace builtin command `x', but
+ still invoke the command from within the function?
+G3) How can I find the value of a shell variable whose name is the value
+ of another shell variable?
+G4) How can I make the bash `time' reserved word print timing output that
+ looks like the output from my system's /usr/bin/time?
+G5) How do I get the current directory into my prompt?
+G6) How can I rename "*.foo" to "*.bar"?
+G7) How can I translate a filename from uppercase to lowercase?
+G8) How can I write a filename expansion (globbing) pattern that will match
+ all files in the current directory except "." and ".."?
+
+Section H: Where do I go from here?
+
+H1) How do I report bugs in bash, and where should I look for fixes and
+ advice?
+H2) What kind of bash documentation is there?
+H3) What's coming in future versions?
+H4) What's on the bash `wish list'?
+H5) When will the next release appear?
+
+----------
+Section A: The Basics
+
+A1) What is it?
+
+Bash is a Unix command interpreter (shell). It is an implementation of
+the Posix 1003.2 shell standard, and resembles the Korn and System V
+shells.
+
+Bash contains a number of enhancements over those shells, both
+for interactive use and shell programming. Features geared
+toward interactive use include command line editing, command
+history, job control, aliases, and prompt expansion. Programming
+features include additional variable expansions, shell
+arithmetic, and a number of variables and options to control
+shell behavior.
+
+Bash was originally written by Brian Fox of the Free Software
+Foundation. The current developer and maintainer is Chet Ramey
+of Case Western Reserve University.
+
+A2) What's the latest version?
+
+The latest version is 2.05b, first made available on Wednesday, 17
+July, 2002.
+
+A3) Where can I get it?
+
+Bash is the GNU project's shell, and so is available from the
+master GNU archive site, ftp.gnu.org, and its mirrors. The
+latest version is also available for FTP from ftp.cwru.edu.
+The following URLs tell how to get version 2.05b:
+
+ftp://ftp.gnu.org/pub/gnu/bash/bash-2.05b.tar.gz
+ftp://ftp.cwru.edu/pub/bash/bash-2.05b.tar.gz
+
+Formatted versions of the documentation are available with the URLs:
+
+ftp://ftp.gnu.org/pub/gnu/bash/bash-doc-2.05b.tar.gz
+ftp://ftp.cwru.edu/pub/bash/bash-doc-2.05b.tar.gz
+
+A4) On what machines will bash run?
+
+Bash has been ported to nearly every version of UNIX. All you
+should have to do to build it on a machine for which a port
+exists is to type `configure' and then `make'. The build process
+will attempt to discover the version of UNIX you have and tailor
+itself accordingly, using a script created by GNU autoconf.
+
+More information appears in the file `INSTALL' in the distribution.
+
+The Bash web page (http://cnswww.cns.cwru.edu/~chet/bash/bashtop.html)
+explains how to obtain binary versions of bash for most of the major
+commercial Unix systems.
+
+A5) Will bash run on operating systems other than Unix?
+
+Configuration specifics for Unix-like systems such as QNX and
+LynxOS are included in the distribution. Bash-2.05 and later
+versions should compile and run on Minix 2.0 (patches were
+contributed), but I don't believe anyone has built bash-2.x on
+earlier Minix versions yet.
+
+Bash has been ported to versions of Windows implementing the Win32
+programming interface. This includes Windows 95 and Windows NT.
+The port was done by Cygnus Solutions as part of their CYGWIN
+project. For more information about the project, look at the URLs
+
+http://www.cygwin.com/
+http://sourceware.cygnus.com/cygwin
+
+Cygnus originally ported bash-1.14.7, and that port was part of their
+early GNU-Win32 (the original name) releases. Cygnus has also done a
+port of bash-2.05 to the CYGWIN environment, and it is available as
+part of their current release.
+
+Bash-2.05b should require no local Cygnus changes to build and run under
+CYGWIN.
+
+The Cygnus port works only on Intel machines. There is a port of bash
+(I don't know which version) to the alpha/NT environment available from
+
+ftp://ftp.gnustep.org//pub/win32/bash-alpha-nt-1.01.tar.gz
+
+DJ Delorie has a port of bash-2.x which runs under MS-DOS, as part
+of the DJGPP project. For more information on the project, see
+
+http://www.delorie.com/djgpp/
+
+I have been told that the original DJGPP port was done by Daisuke Aoyama.
+
+Mark Elbrecht <snowball3@bigfoot.com> has sent me notice that bash-2.04
+is available for DJGPP V2. The files are available as:
+
+ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsh204b.zip binary
+ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsh204d.zip documentation
+ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsh204s.zip source
+
+Mark has begun to work with bash-2.05, but I don't know the status.
+
+Ports of bash-1.12 and bash-2.0 are available for OS/2 from
+
+ftp://hobbes.nmsu.edu/pub/os2/util/shell/bash_112.zip
+ftp://hobbes.nmsu.edu/pub/os2/util/shell/bash-2.0(253).zip
+
+I haven't looked at either, but the second appears to be a binary-only
+distribution. Beware.
+
+I have received word that Bash (I'm not sure which version, but I
+believe that it's at least bash-2.02.1) is the standard shell on
+BeOS.
+
+A6) How can I build bash with gcc?
+
+Bash configures to use gcc by default if it is available. Read the
+file INSTALL in the distribution for more information.
+
+A7) How can I make bash my login shell?
+
+Some machines let you use `chsh' to change your login shell. Other
+systems use `passwd -s' or `passwd -e'. If one of these works for
+you, that's all you need. Note that many systems require the full
+pathname to a shell to appear in /etc/shells before you can make it
+your login shell. For this, you may need the assistance of your
+friendly local system administrator.
+
+If you cannot do this, you can still use bash as your login shell, but
+you need to perform some tricks. The basic idea is to add a command
+to your login shell's startup file to replace your login shell with
+bash.
+
+For example, if your login shell is csh or tcsh, and you have installed
+bash in /usr/gnu/bin/bash, add the following line to ~/.login:
+
+ if ( -f /usr/gnu/bin/bash ) exec /usr/gnu/bin/bash --login
+
+(the `--login' tells bash that it is a login shell).
+
+It's not a good idea to put this command into ~/.cshrc, because every
+csh you run without the `-f' option, even ones started to run csh scripts,
+reads that file. If you must put the command in ~/.cshrc, use something
+like
+
+ if ( $?prompt ) exec /usr/gnu/bin/bash --login
+
+to ensure that bash is exec'd only when the csh is interactive.
+
+If your login shell is sh or ksh, you have to do two things.
+
+First, create an empty file in your home directory named `.bash_profile'.
+The existence of this file will prevent the exec'd bash from trying to
+read ~/.profile, and re-execing itself over and over again. ~/.bash_profile
+is the first file bash tries to read initialization commands from when
+it is invoked as a login shell.
+
+Next, add a line similar to the above to ~/.profile:
+
+ [ -f /usr/gnu/bin/bash ] && [ -x /usr/gnu/bin/bash ] && \
+ exec /usr/gnu/bin/bash --login
+
+This will cause login shells to replace themselves with bash running as
+a login shell. Once you have this working, you can copy your initialization
+code from ~/.profile to ~/.bash_profile.
+
+I have received word that the recipe supplied above is insufficient for
+machines running CDE. CDE has a maze of twisty little startup files, all
+slightly different.
+
+If you cannot change your login shell in the password file to bash, you
+will have to (apparently) live with CDE using the shell in the password
+file to run its startup scripts. If you have changed your shell to bash,
+there is code in the CDE startup files (on Solaris, at least) that attempts
+to do the right thing. It is, however, often broken, and may require that
+you use the $BASH_ENV trick described below.
+
+`dtterm' claims to use $SHELL as the default program to start, so if you
+can change $SHELL in the CDE startup files, you should be able to use bash
+in your terminal windows.
+
+Setting DTSOURCEPROFILE in ~/.dtprofile will cause the `Xsession' program
+to read your login shell's startup files. You may be able to use bash for
+the rest of the CDE programs by setting SHELL to bash in ~/.dtprofile as
+well, but I have not tried this.
+
+You can use the above `exec' recipe to start bash when not logging in with
+CDE by testing the value of the DT variable:
+
+ if [ -n "$DT" ]; then
+ [ -f /usr/gnu/bin/bash ] && exec /usr/gnu/bin/bash --login
+ fi
+
+If CDE starts its shells non-interactively during login, the login shell
+startup files (~/.profile, ~/.bash_profile) will not be sourced at login.
+To get around this problem, append a line similar to the following to your
+~/.dtprofile:
+
+ BASH_ENV=${HOME}/.bash_profile ; export BASH_ENV
+
+and add the following line to the beginning of ~/.bash_profile:
+
+ unset BASH_ENV
+
+A8) I just changed my login shell to bash, and now I can't FTP into my
+ machine. Why not?
+
+You must add the full pathname to bash to the file /etc/shells. As
+noted in the answer to the previous question, many systems require
+this before you can make bash your login shell.
+
+Most versions of ftpd use this file to prohibit `special' users
+such as `uucp' and `news' from using FTP.
+
+A9) What's the `POSIX 1003.2 standard'?
+
+POSIX is a name originally coined by Richard Stallman for a
+family of open system standards based on UNIX. There are a
+number of aspects of UNIX under consideration for
+standardization, from the basic system services at the system
+call and C library level to applications and tools to system
+administration and management. Each area of standardization is
+assigned to a working group in the 1003 series.
+
+The POSIX Shell and Utilities standard has been developed by IEEE
+Working Group 1003.2 (POSIX.2). It concentrates on the command
+interpreter interface and utility programs commonly executed from
+the command line or by other programs. An initial version of the
+standard has been approved and published by the IEEE, and work is
+currently underway to update it.
+
+Bash is concerned with the aspects of the shell's behavior
+defined by POSIX.2. The shell command language has of course
+been standardized, including the basic flow control and program
+execution constructs, I/O redirection and pipelining, argument
+handling, variable expansion, and quoting.
+
+The `special' builtins, which must be implemented as part of the
+shell to provide the desired functionality, are specified as
+being part of the shell; examples of these are `eval' and
+`export'. Other utilities appear in the sections of POSIX.2 not
+devoted to the shell which are commonly (and in some cases must
+be) implemented as builtin commands, such as `read' and `test'.
+POSIX.2 also specifies aspects of the shell's interactive
+behavior as part of the UPE, including job control and command
+line editing. Only vi-style line editing commands have been
+standardized; emacs editing commands were left out due to
+objections.
+
+The Open Group has made an older version of its Single Unix
+Specification (version 2), which is very similar to POSIX.2,
+available on the web at
+
+http://www.opengroup.org/onlinepubs/007908799/
+
+The Single Unix Specification, version 3, is available on the web at
+
+http://www.opengroup.org/onlinepubs/007904975/
+
+A10) What is the bash `posix mode'?
+
+Although bash is an implementation of the POSIX.2 shell
+specification, there are areas where the bash default behavior
+differs from that spec. The bash `posix mode' changes the bash
+behavior in these areas so that it obeys the spec more closely.
+
+Posix mode is entered by starting bash with the --posix or
+'-o posix' option or executing `set -o posix' after bash is running.
+
+The specific aspects of bash which change when posix mode is
+active are listed in the file POSIX in the bash distribution.
+They are also listed in a section in the Bash Reference Manual
+(from which that file is generated).
+
+Section B: The latest version
+
+B1) What's new in version 2.05b?
+
+The raison d'etre for bash-2.05b is to make a second intermediate
+release containing the first of the new features to be available
+in bash-3.0 and get feedback on those features before proceeding.
+The major new feature is multibyte character support in both Bash
+and Readline.
+
+Bash-2.05b contains the following new features (see the manual page for
+complete descriptions and the CHANGES and NEWS files in the bash-2.05b
+distribution):
+
+o support for multibyte characters has been added to both bash and readline
+
+o the DEBUG trap is now run *before* simple commands, ((...)) commands,
+ [[...]] conditional commands, and for ((...)) loops
+
+o the shell now performs arithmetic in the largest integer size the machine
+ supports (intmax_t)
+
+o there is a new \D{...} prompt expansion; passes the `...' to strftime(3)
+ and inserts the result into the expanded prompt
+
+o there is a new `here-string' redirection operator: <<< word
+
+o when displaying variables, function attributes and definitions are shown
+ separately, allowing them to be re-used as input (attempting to re-use
+ the old output would result in syntax errors).
+
+o `read' has a new `-u fd' option to read from a specified file descriptor
+
+o the bash debugger in examples/bashdb has been modified to work with the
+ new DEBUG trap semantics, the command set has been made more gdb-like,
+ and the changes to $LINENO make debugging functions work better
+
+o the expansion of $LINENO inside a shell function is only relative to the
+ function start if the shell is interactive -- if the shell is running a
+ script, $LINENO expands to the line number in the script. This is as
+ POSIX-2001 requires
+
+
+A short feature history dating from Bash-2.0:
+
+Bash-2.05a introduced the following new features:
+
+o The `printf' builtin has undergone major work
+
+o There is a new read-only `shopt' option: login_shell, which is set by
+ login shells and unset otherwise
+
+o New `\A' prompt string escape sequence; expanding to time in 24-hour
+ HH:MM format
+
+o New `-A group/-g' option to complete and compgen; goes group name
+ completion
+
+o New [+-]O invocation option to set and unset `shopt' options at startup
+
+o ksh-like `ERR' trap
+
+o `for' loops now allow empty word lists after the `in' reserved word
+
+o new `hard' and `soft' arguments for the `ulimit' builtin
+
+o Readline can be configured to place the user at the same point on the line
+ when retrieving commands from the history list
+
+o Readline can be configured to skip `hidden' files (filenames with a leading
+ `.' on Unix) when performing completion
+
+Bash-2.05 introduced the following new features:
+
+o This version has once again reverted to using locales and strcoll(3) when
+ processing pattern matching bracket expressions, as POSIX requires.
+o Added a new `--init-file' invocation argument as a synonym for `--rcfile',
+ per the new GNU coding standards.
+o The /dev/tcp and /dev/udp redirections now accept service names as well as
+ port numbers.
+o `complete' and `compgen' now take a `-o value' option, which controls some
+ of the aspects of that compspec. Valid values are:
+
+ default - perform bash default completion if programmable
+ completion produces no matches
+ dirnames - perform directory name completion if programmable
+ completion produces no matches
+ filenames - tell readline that the compspec produces filenames,
+ so it can do things like append slashes to
+ directory names and suppress trailing spaces
+o A new loadable builtin, realpath, which canonicalizes and expands symlinks
+ in pathname arguments.
+o When `set' is called without options, it prints function defintions in a
+ way that allows them to be reused as input. This affects `declare' and
+ `declare -p' as well. This only happens when the shell is not in POSIX
+ mode, since POSIX.2 forbids this behavior.
+
+Bash-2.04 introduced the following new features:
+
+o Programmable word completion with the new `complete' and `compgen' builtins;
+ examples are provided in examples/complete/complete-examples
+o `history' has a new `-d' option to delete a history entry
+o `bind' has a new `-x' option to bind key sequences to shell commands
+o The prompt expansion code has new `\j' and `\l' escape sequences
+o The `no_empty_cmd_completion' shell option, if enabled, inhibits
+ command completion when TAB is typed on an empty line
+o `help' has a new `-s' option to print a usage synopsis
+o New arithmetic operators: var++, var--, ++var, --var, expr1,expr2 (comma)
+o New ksh93-style arithmetic for command:
+ for ((expr1 ; expr2; expr3 )); do list; done
+o `read' has new options: `-t', `-n', `-d', `-s'
+o The redirection code handles several filenames specially: /dev/fd/N,
+ /dev/stdin, /dev/stdout, /dev/stderr
+o The redirection code now recognizes /dev/tcp/HOST/PORT and
+ /dev/udp/HOST/PORT and tries to open a TCP or UDP socket, respectively,
+ to the specified port on the specified host
+o The ${!prefix*} expansion has been implemented
+o A new FUNCNAME variable, which expands to the name of a currently-executing
+ function
+o The GROUPS variable is no longer readonly
+o A new shopt `xpg_echo' variable, to control the behavior of echo with
+ respect to backslash-escape sequences at runtime
+o The NON_INTERACTIVE_LOGIN_SHELLS #define has returned
+
+The version of Readline released with Bash-2.04, Readline-4.1, had several
+new features as well:
+
+o Parentheses matching is always compiled into readline, and controllable
+ with the new `blink-matching-paren' variable
+o The history-search-forward and history-search-backward functions now leave
+ point at the end of the line when the search string is empty, like
+ reverse-search-history, and forward-search-history
+o A new function for applications: rl_on_new_line_with_prompt()
+o New variables for applications: rl_already_prompted, and rl_gnu_readline_p
+
+
+Bash-2.03 had very few new features, in keeping with the convention
+that odd-numbered releases provide mainly bug fixes. A number of new
+features were added to Readline, mostly at the request of the Cygnus
+folks.
+
+A new shopt option, `restricted_shell', so that startup files can test
+ whether or not the shell was started in restricted mode
+Filename generation is now performed on the words between ( and ) in
+ compound array assignments (this is really a bug fix)
+OLDPWD is now auto-exported, as POSIX.2 requires
+ENV and BASH_ENV are read-only variables in a restricted shell
+Bash may now be linked against an already-installed Readline library,
+ as long as the Readline library is version 4 or newer
+All shells begun with the `--login' option will source the login shell
+ startup files, even if the shell is not interactive
+
+There were lots of changes to the version of the Readline library released
+along with Bash-2.03. For a complete list of the changes, read the file
+CHANGES in the Bash-2.03 distribution.
+
+Bash-2.02 contained the following new features:
+
+a new version of malloc (based on the old GNU malloc code in previous
+ bash versions) that is more page-oriented, more conservative
+ with memory usage, does not `orphan' large blocks when they
+ are freed, is usable on 64-bit machines, and has allocation
+ checking turned on unconditionally
+POSIX.2-style globbing character classes ([:alpha:], [:alnum:], etc.)
+POSIX.2-style globbing equivalence classes
+POSIX.2-style globbing collating symbols
+the ksh [[...]] extended conditional command
+the ksh egrep-style extended pattern matching operators
+a new `printf' builtin
+the ksh-like $(<filename) command substitution, which is equivalent to
+ $(cat filename)
+new tilde prefixes that expand to directories from the directory stack
+new `**' arithmetic operator to do exponentiation
+case-insensitive globbing (filename expansion)
+menu completion a la tcsh
+`magic-space' history expansion function like tcsh
+the readline inputrc `language' has a new file inclusion directive ($include)
+
+Bash-2.01 contained only a few new features:
+
+new `GROUPS' builtin array variable containing the user's group list
+new bindable readline commands: history-and-alias-expand-line and
+ alias-expand-line
+
+Bash-2.0 contained extensive changes and new features from bash-1.14.7.
+Here's a short list:
+
+new `time' reserved word to time pipelines, shell builtins, and
+ shell functions
+one-dimensional arrays with a new compound assignment statement,
+ appropriate expansion constructs and modifications to some
+ of the builtins (read, declare, etc.) to use them
+new quoting syntaxes for ANSI-C string expansion and locale-specific
+ string translation
+new expansions to do substring extraction, pattern replacement, and
+ indirect variable expansion
+new builtins: `disown' and `shopt'
+new variables: HISTIGNORE, SHELLOPTS, PIPESTATUS, DIRSTACK, GLOBIGNORE,
+ MACHTYPE, BASH_VERSINFO
+special handling of many unused or redundant variables removed
+ (e.g., $notify, $glob_dot_filenames, $no_exit_on_failed_exec)
+dynamic loading of new builtin commands; many loadable examples provided
+new prompt expansions: \a, \e, \n, \H, \T, \@, \v, \V
+history and aliases available in shell scripts
+new readline variables: enable-keypad, mark-directories, input-meta,
+ visible-stats, disable-completion, comment-begin
+new readline commands to manipulate the mark and operate on the region
+new readline emacs mode commands and bindings for ksh-88 compatibility
+updated and extended builtins
+new DEBUG trap
+expanded (and now documented) restricted shell mode
+
+implementation stuff:
+autoconf-based configuration
+nearly all of the bugs reported since version 1.14 have been fixed
+most builtins converted to use builtin `getopt' for consistency
+most builtins use -p option to display output in a reusable form
+ (for consistency)
+grammar tighter and smaller (66 reduce-reduce conflicts gone)
+lots of code now smaller and faster
+test suite greatly expanded
+
+B2) Are there any user-visible incompatibilities between bash-2.05b and
+ bash-1.14.7?
+
+There are a few incompatibilities between version 1.14.7 and version 2.05b.
+They are detailed in the file COMPAT in the bash distribution. That file
+is not meant to be all-encompassing; send mail to bash-maintainers@gnu.org
+if if you find something that's not mentioned there.
+
+Section C: Differences from other Unix shells
+
+C1) How does bash differ from sh, the Bourne shell?
+
+This is a non-comprehensive list of features that differentiate bash
+from the SVR4.2 shell. The bash manual page explains these more
+completely.
+
+Things bash has that sh does not:
+ long invocation options
+ [+-]O invocation option
+ -l invocation option
+ `!' reserved word to invert pipeline return value
+ `time' reserved word to time pipelines and shell builtins
+ the `function' reserved word
+ the `select' compound command and reserved word
+ arithmetic for command: for ((expr1 ; expr2; expr3 )); do list; done
+ new $'...' and $"..." quoting
+ the $(...) form of command substitution
+ the $(<filename) form of command substitution, equivalent to
+ $(cat filename)
+ the ${#param} parameter value length operator
+ the ${!param} indirect parameter expansion operator
+ the ${!param*} prefix expansion operator
+ the ${param:offset[:length]} parameter substring operator
+ the ${param/pat[/string]} parameter pattern substitution operator
+ expansions to perform substring removal (${p%[%]w}, ${p#[#]w})
+ expansion of positional parameters beyond $9 with ${num}
+ variables: BASH, BASH_VERSION, BASH_VERSINFO, UID, EUID, REPLY,
+ TIMEFORMAT, PPID, PWD, OLDPWD, SHLVL, RANDOM, SECONDS,
+ LINENO, HISTCMD, HOSTTYPE, OSTYPE, MACHTYPE, HOSTNAME,
+ ENV, PS3, PS4, DIRSTACK, PIPESTATUS, HISTSIZE, HISTFILE,
+ HISTFILESIZE, HISTCONTROL, HISTIGNORE, GLOBIGNORE, GROUPS,
+ PROMPT_COMMAND, FCEDIT, FIGNORE, IGNOREEOF, INPUTRC,
+ SHELLOPTS, OPTERR, HOSTFILE, TMOUT, FUNCNAME, histchars,
+ auto_resume
+ DEBUG trap
+ ERR trap
+ variable arrays with new compound assignment syntax
+ redirections: <>, &>, >|, <<<, [n]<&word-, [n]>&word-
+ prompt string special char translation and variable expansion
+ auto-export of variables in initial environment
+ command search finds functions before builtins
+ bash return builtin will exit a file sourced with `.'
+ builtins: cd -/-L/-P, exec -l/-c/-a, echo -e/-E, hash -d/-l/-p/-t.
+ export -n/-f/-p/name=value, pwd -L/-P,
+ read -e/-p/-a/-t/-n/-d/-s/-u,
+ readonly -a/-f/name=value, trap -l, set +o,
+ set -b/-m/-o option/-h/-p/-B/-C/-H/-P,
+ unset -f/-v, ulimit -m/-p/-u,
+ type -a/-p/-t/-f/-P, suspend -f, kill -n,
+ test -o optname/s1 == s2/s1 < s2/s1 > s2/-nt/-ot/-ef/-O/-G/-S
+ bash reads ~/.bashrc for interactive shells, $ENV for non-interactive
+ bash restricted shell mode is more extensive
+ bash allows functions and variables with the same name
+ brace expansion
+ tilde expansion
+ arithmetic expansion with $((...)) and `let' builtin
+ the `[[...]]' extended conditional command
+ process substitution
+ aliases and alias/unalias builtins
+ local variables in functions and `local' builtin
+ readline and command-line editing with programmable completion
+ command history and history/fc builtins
+ csh-like history expansion
+ other new bash builtins: bind, command, compgen, complete, builtin,
+ declare/typeset, dirs, enable, fc, help,
+ history, logout, popd, pushd, disown, shopt,
+ printf
+ exported functions
+ filename generation when using output redirection (command >a*)
+ POSIX.2-style globbing character classes
+ POSIX.2-style globbing equivalence classes
+ POSIX.2-style globbing collating symbols
+ egrep-like extended pattern matching operators
+ case-insensitive pattern matching and globbing
+ variable assignments preceding commands affect only that command,
+ even for builtins and functions
+ posix mode
+ redirection to /dev/fd/N, /dev/stdin, /dev/stdout, /dev/stderr,
+ /dev/tcp/host/port, /dev/udp/host/port
+
+Things sh has that bash does not:
+ uses variable SHACCT to do shell accounting
+ includes `stop' builtin (bash can use alias stop='kill -s STOP')
+ `newgrp' builtin
+ turns on job control if called as `jsh'
+ $TIMEOUT (like bash $TMOUT)
+ `^' is a synonym for `|'
+ new SVR4.2 sh builtins: mldmode, priv
+
+Implementation differences:
+ redirection to/from compound commands causes sh to create a subshell
+ bash does not allow unbalanced quotes; sh silently inserts them at EOF
+ bash does not mess with signal 11
+ sh sets (euid, egid) to (uid, gid) if -p not supplied and uid < 100
+ bash splits only the results of expansions on IFS, using POSIX.2
+ field splitting rules; sh splits all words on IFS
+ sh does not allow MAILCHECK to be unset (?)
+ sh does not allow traps on SIGALRM or SIGCHLD
+ bash allows multiple option arguments when invoked (e.g. -x -v);
+ sh allows only a single option argument (`sh -x -v' attempts
+ to open a file named `-v', and, on SunOS 4.1.4, dumps core.
+ On Solaris 2.4 and earlier versions, sh goes into an infinite
+ loop.)
+ sh exits a script if any builtin fails; bash exits only if one of
+ the POSIX.2 `special' builtins fails
+
+C2) How does bash differ from the Korn shell, version ksh88?
+
+Things bash has or uses that ksh88 does not:
+ long invocation options
+ [-+]O invocation option
+ -l invocation option
+ `!' reserved word
+ arithmetic for command: for ((expr1 ; expr2; expr3 )); do list; done
+ arithmetic in largest machine-supported size (intmax_t)
+ posix mode and posix conformance
+ command hashing
+ tilde expansion for assignment statements that look like $PATH
+ process substitution with named pipes if /dev/fd is not available
+ the ${!param} indirect parameter expansion operator
+ the ${!param*} prefix expansion operator
+ the ${param:offset[:length]} parameter substring operator
+ the ${param/pat[/string]} parameter pattern substitution operator
+ variables: BASH, BASH_VERSION, BASH_VERSINFO, UID, EUID, SHLVL,
+ TIMEFORMAT, HISTCMD, HOSTTYPE, OSTYPE, MACHTYPE,
+ HISTFILESIZE, HISTIGNORE, HISTCONTROL, PROMPT_COMMAND,
+ IGNOREEOF, FIGNORE, INPUTRC, HOSTFILE, DIRSTACK,
+ PIPESTATUS, HOSTNAME, OPTERR, SHELLOPTS, GLOBIGNORE,
+ GROUPS, FUNCNAME, histchars, auto_resume
+ prompt expansion with backslash escapes and command substitution
+ redirection: &> (stdout and stderr), <<<, [n]<&word-, [n]>&word-
+ more extensive and extensible editing and programmable completion
+ builtins: bind, builtin, command, declare, dirs, echo -e/-E, enable,
+ exec -l/-c/-a, fc -s, export -n/-f/-p, hash, help, history,
+ jobs -x/-r/-s, kill -s/-n/-l, local, logout, popd, pushd,
+ read -e/-p/-a/-t/-n/-d/-s, readonly -a/-n/-f/-p,
+ set -o braceexpand/-o histexpand/-o interactive-comments/
+ -o notify/-o physical/-o posix/-o hashall/-o onecmd/
+ -h/-B/-C/-b/-H/-P, set +o, suspend, trap -l, type,
+ typeset -a/-F/-p, ulimit -u, umask -S, alias -p, shopt,
+ disown, printf, complete, compgen
+ `!' csh-style history expansion
+ POSIX.2-style globbing character classes
+ POSIX.2-style globbing equivalence classes
+ POSIX.2-style globbing collating symbols
+ egrep-like extended pattern matching operators
+ case-insensitive pattern matching and globbing
+ `**' arithmetic operator to do exponentiation
+ redirection to /dev/fd/N, /dev/stdin, /dev/stdout, /dev/stderr
+ arrays of unlimited size
+ TMOUT is default timeout for `read' and `select'
+
+Things ksh88 has or uses that bash does not:
+ tracked aliases (alias -t)
+ variables: ERRNO, FPATH, EDITOR, VISUAL
+ co-processes (|&, >&p, <&p)
+ weirdly-scoped functions
+ typeset +f to list all function names without definitions
+ text of command history kept in a file, not memory
+ builtins: alias -x, cd old new, fc -e -, newgrp, print,
+ read -p/-s/var?prompt, set -A/-o gmacs/
+ -o bgnice/-o markdirs/-o nolog/-o trackall/-o viraw/-s,
+ typeset -H/-L/-R/-Z/-A/-ft/-fu/-fx/-l/-u/-t, whence
+ using environment to pass attributes of exported variables
+ arithmetic evaluation done on arguments to some builtins
+ reads .profile from $PWD when invoked as login shell
+
+Implementation differences:
+ ksh runs last command of a pipeline in parent shell context
+ bash has brace expansion by default (ksh88 compile-time option)
+ bash has fixed startup file for all interactive shells; ksh reads $ENV
+ bash has exported functions
+ bash command search finds functions before builtins
+ bash waits for all commands in pipeline to exit before returning status
+ emacs-mode editing has some slightly different key bindings
+
+C3) Which new features in ksh-93 are not in bash, and which are?
+
+New things in ksh-93 not in bash-2.05b:
+ associative arrays
+ floating point arithmetic and variables
+ math library functions
+ ${!name[sub]} name of subscript for associative array
+ `.' is allowed in variable names to create a hierarchical namespace
+ more extensive compound assignment syntax
+ discipline functions
+ `sleep' and `getconf' builtins (bash has loadable versions)
+ typeset -n and `nameref' variables
+ KEYBD trap
+ variables: .sh.edchar, .sh.edmode, .sh.edcol, .sh.edtext, .sh.version,
+ .sh.name, .sh.subscript, .sh.value, .sh.match, HISTEDIT
+ backreferences in pattern matching (\N)
+ `&' operator in pattern lists for matching
+ print -f (bash uses printf)
+ `fc' has been renamed to `hist'
+ `.' can execute shell functions
+ exit statuses between 0 and 255
+ set -o pipefail
+ `+=' variable assignment operator
+ FPATH and PATH mixing
+ getopts -a
+ -I invocation option
+ DEBUG trap now executed before each simple command, instead of after
+ printf %H, %P, %T, %Z modifiers, output base for %d
+ lexical scoping for local variables in `ksh' functions
+ no scoping for local variables in `POSIX' functions
+
+New things in ksh-93 present in bash-2.05b:
+ [n]<&word- and [n]>&word- redirections (combination dup and close)
+ for (( expr1; expr2; expr3 )) ; do list; done - arithmetic for command
+ ?:, ++, --, `expr1 , expr2' arithmetic operators
+ expansions: ${!param}, ${param:offset[:len]}, ${param/pat[/str]},
+ ${!param*}
+ compound array assignment
+ the `!' reserved word
+ loadable builtins -- but ksh uses `builtin' while bash uses `enable'
+ `command', `builtin', `disown' builtins
+ new $'...' and $"..." quoting
+ FIGNORE (but bash uses GLOBIGNORE), HISTCMD
+ set -o notify/-C
+ changes to kill builtin
+ read -A (bash uses read -a)
+ read -t/-d
+ trap -p
+ exec -c/-a
+ `.' restores the positional parameters when it completes
+ POSIX.2 `test'
+ umask -S
+ unalias -a
+ command and arithmetic substitution performed on PS1, PS4, and ENV
+ command name completion
+ ENV processed only for interactive shells
+
+Section D: Why does bash do some things differently than other Unix shells?
+
+D1) Why does bash run a different version of `command' than
+ `which command' says it will?
+
+On many systems, `which' is actually a csh script that assumes
+you're running csh. In tcsh, `which' and its cousin `where'
+are builtins. On other Unix systems, `which' is a perl script
+that uses the PATH environment variable.
+
+The csh script version reads the csh startup files from your
+home directory and uses those to determine which `command' will
+be invoked. Since bash doesn't use any of those startup files,
+there's a good chance that your bash environment differs from
+your csh environment. The bash `type' builtin does everything
+`which' does, and will report correct results for the running
+shell. If you're really wedded to the name `which', try adding
+the following function definition to your .bashrc:
+
+ which()
+ {
+ builtin type "$@"
+ }
+
+If you're moving from tcsh and would like to bring `where' along
+as well, use this function:
+
+ where()
+ {
+ builtin type -a "$@"
+ }
+
+D2) Why doesn't bash treat brace expansions exactly like csh?
+
+The only difference between bash and csh brace expansion is that
+bash requires a brace expression to contain at least one unquoted
+comma if it is to be expanded. Any brace-surrounded word not
+containing an unquoted comma is left unchanged by the brace
+expansion code. This affords the greatest degree of sh
+compatibility.
+
+Bash, ksh, zsh, and pd-ksh all implement brace expansion this way.
+
+D3) Why doesn't bash have csh variable modifiers?
+
+Posix has specified a more powerful, albeit somewhat more cryptic,
+mechanism cribbed from ksh, and bash implements it.
+
+${parameter%word}
+ Remove smallest suffix pattern. The WORD is expanded to produce
+ a pattern. It then expands to the value of PARAMETER, with the
+ smallest portion of the suffix matched by the pattern deleted.
+
+ x=file.c
+ echo ${x%.c}.o
+ -->file.o
+
+${parameter%%word}
+
+ Remove largest suffix pattern. The WORD is expanded to produce
+ a pattern. It then expands to the value of PARAMETER, with the
+ largest portion of the suffix matched by the pattern deleted.
+
+ x=posix/src/std
+ echo ${x%%/*}
+ -->posix
+
+${parameter#word}
+ Remove smallest prefix pattern. The WORD is expanded to produce
+ a pattern. It then expands to the value of PARAMETER, with the
+ smallest portion of the prefix matched by the pattern deleted.
+
+ x=$HOME/src/cmd
+ echo ${x#$HOME}
+ -->/src/cmd
+
+${parameter##word}
+ Remove largest prefix pattern. The WORD is expanded to produce
+ a pattern. It then expands to the value of PARAMETER, with the
+ largest portion of the prefix matched by the pattern deleted.
+
+ x=/one/two/three
+ echo ${x##*/}
+ -->three
+
+
+Given
+ a=/a/b/c/d
+ b=b.xxx
+
+ csh bash result
+ --- ---- ------
+ $a:h ${a%/*} /a/b/c
+ $a:t ${a##*/} d
+ $b:r ${b%.*} b
+ $b:e ${b##*.} xxx
+
+
+D4) How can I make my csh aliases work when I convert to bash?
+
+Bash uses a different syntax to support aliases than csh does.
+The details can be found in the documentation. We have provided
+a shell script which does most of the work of conversion for you;
+this script can be found in ./examples/misc/aliasconv.sh. Here is
+how you use it:
+
+Start csh in the normal way for you. (e.g., `csh')
+
+Pipe the output of `alias' through `aliasconv.sh', saving the
+results into `bash_aliases':
+
+ alias | bash aliasconv.sh >bash_aliases
+
+Edit `bash_aliases', carefully reading through any created
+functions. You will need to change the names of some csh specific
+variables to the bash equivalents. The script converts $cwd to
+$PWD, $term to $TERM, $home to $HOME, $user to $USER, and $prompt
+to $PS1. You may also have to add quotes to avoid unwanted
+expansion.
+
+For example, the csh alias:
+
+ alias cd 'cd \!*; echo $cwd'
+
+is converted to the bash function:
+
+ cd () { command cd "$@"; echo $PWD ; }
+
+The only thing that needs to be done is to quote $PWD:
+
+ cd () { command cd "$@"; echo "$PWD" ; }
+
+Merge the edited file into your ~/.bashrc.
+
+There is an additional, more ambitious, script in
+examples/misc/cshtobash that attempts to convert your entire csh
+environment to its bash equivalent. This script can be run as
+simply `cshtobash' to convert your normal interactive
+environment, or as `cshtobash ~/.login' to convert your login
+environment.
+
+D5) How can I pipe standard output and standard error from one command to
+ another, like csh does with `|&'?
+
+Use
+ command 2>&1 | command2
+
+The key is to remember that piping is performed before redirection, so
+file descriptor 1 points to the pipe when it is duplicated onto file
+descriptor 2.
+
+D6) Now that I've converted from ksh to bash, are there equivalents to
+ ksh features like autoloaded functions and the `whence' command?
+
+There are features in ksh-88 and ksh-93 that do not have direct bash
+equivalents. Most, however, can be emulated with very little trouble.
+
+ksh-88 feature Bash equivalent
+-------------- ---------------
+compiled-in aliases set up aliases in .bashrc; some ksh aliases are
+ bash builtins (hash, history, type)
+coprocesses named pipe pairs (one for read, one for write)
+typeset +f declare -F
+cd, print, whence function substitutes in examples/functions/kshenv
+autoloaded functions examples/functions/autoload is the same as typeset -fu
+read var?prompt read -p prompt var
+
+ksh-93 feature Bash equivalent
+-------------- ---------------
+sleep, getconf Bash has loadable versions in examples/loadables
+${.sh.version} $BASH_VERSION
+print -f printf
+hist alias hist=fc
+$HISTEDIT $FCEDIT
+
+Section E: How can I get bash to do certain things, and why does bash do
+ things the way it does?
+
+E1) Why is the bash builtin `test' slightly different from /bin/test?
+
+The specific example used here is [ ! x -o x ], which is false.
+
+Bash's builtin `test' implements the Posix.2 spec, which can be
+summarized as follows (the wording is due to David Korn):
+
+Here is the set of rules for processing test arguments.
+
+ 0 Args: False
+ 1 Arg: True iff argument is not null.
+ 2 Args: If first arg is !, True iff second argument is null.
+ If first argument is unary, then true if unary test is true
+ Otherwise error.
+ 3 Args: If second argument is a binary operator, do binary test of $1 $3
+ If first argument is !, negate two argument test of $2 $3
+ If first argument is `(' and third argument is `)', do the
+ one-argument test of the second argument.
+ Otherwise error.
+ 4 Args: If first argument is !, negate three argument test of $2 $3 $4.
+ Otherwise unspecified
+ 5 or more Args: unspecified. (Historical shells would use their
+ current algorithm).
+
+The operators -a and -o are considered binary operators for the purpose
+of the 3 Arg case.
+
+As you can see, the test becomes (not (x or x)), which is false.
+
+E2) Why does bash sometimes say `Broken pipe'?
+
+If a sequence of commands appears in a pipeline, and one of the
+reading commands finishes before the writer has finished, the
+writer receives a SIGPIPE signal. Many other shells special-case
+SIGPIPE as an exit status in the pipeline and do not report it.
+For example, in:
+
+ ps -aux | head
+
+`head' can finish before `ps' writes all of its output, and ps
+will try to write on a pipe without a reader. In that case, bash
+will print `Broken pipe' to stderr when ps is killed by a
+SIGPIPE.
+
+You can build a version of bash that will not report SIGPIPE errors
+by uncommenting the definition of DONT_REPORT_SIGPIPE in the file
+config-top.h.
+
+E3) When I have terminal escape sequences in my prompt, why does bash
+ wrap lines at the wrong column?
+
+Readline, the line editing library that bash uses, does not know
+that the terminal escape sequences do not take up space on the
+screen. The redisplay code assumes, unless told otherwise, that
+each character in the prompt is a `printable' character that
+takes up one character position on the screen.
+
+You can use the bash prompt expansion facility (see the PROMPTING
+section in the manual page) to tell readline that sequences of
+characters in the prompt strings take up no screen space.
+
+Use the \[ escape to begin a sequence of non-printing characters,
+and the \] escape to signal the end of such a sequence.
+
+E4) If I pipe the output of a command into `read variable', why doesn't
+ the output show up in $variable when the read command finishes?
+
+This has to do with the parent-child relationship between Unix
+processes. It affects all commands run in pipelines, not just
+simple calls to `read'. For example, piping a command's output
+into a `while' loop that repeatedly calls `read' will result in
+the same behavior.
+
+Each element of a pipeline runs in a separate process, a child of
+the shell running the pipeline. A subprocess cannot affect its
+parent's environment. When the `read' command sets the variable
+to the input, that variable is set only in the subshell, not the
+parent shell. When the subshell exits, the value of the variable
+is lost.
+
+Many pipelines that end with `read variable' can be converted
+into command substitutions, which will capture the output of
+a specified command. The output can then be assigned to a
+variable:
+
+ grep ^gnu /usr/lib/news/active | wc -l | read ngroup
+
+can be converted into
+
+ ngroup=$(grep ^gnu /usr/lib/news/active | wc -l)
+
+This does not, unfortunately, work to split the text among
+multiple variables, as read does when given multiple variable
+arguments. If you need to do this, you can either use the
+command substitution above to read the output into a variable
+and chop up the variable using the bash pattern removal
+expansion operators or use some variant of the following
+approach.
+
+Say /usr/local/bin/ipaddr is the following shell script:
+
+#! /bin/sh
+host `hostname` | awk '/address/ {print $NF}'
+
+Instead of using
+
+ /usr/local/bin/ipaddr | read A B C D
+
+to break the local machine's IP address into separate octets, use
+
+ OIFS="$IFS"
+ IFS=.
+ set -- $(/usr/local/bin/ipaddr)
+ IFS="$OIFS"
+ A="$1" B="$2" C="$3" D="$4"
+
+Beware, however, that this will change the shell's positional
+parameters. If you need them, you should save them before doing
+this.
+
+This is the general approach -- in most cases you will not need to
+set $IFS to a different value.
+
+Some other user-supplied alternatives include:
+
+read A B C D << HERE
+ $(IFS=.; echo $(/usr/local/bin/ipaddr))
+HERE
+
+and, where process substitution is available,
+
+read A B C D < <(IFS=.; echo $(/usr/local/bin/ipaddr))
+
+E5) I have a bunch of shell scripts that use backslash-escaped characters
+ in arguments to `echo'. Bash doesn't interpret these characters. Why
+ not, and how can I make it understand them?
+
+This is the behavior of echo on most Unix System V machines.
+
+The bash builtin `echo' is modeled after the 9th Edition
+Research Unix version of `echo'. It does not interpret
+backslash-escaped characters in its argument strings by default;
+it requires the use of the -e option to enable the
+interpretation. The System V echo provides no way to disable the
+special characters; the bash echo has a -E option to disable
+them.
+
+There is a configuration option that will make bash behave like
+the System V echo and interpret things like `\t' by default. Run
+configure with the --enable-xpg-echo-default option to turn this
+on. Be aware that this will cause some of the tests run when you
+type `make tests' to fail.
+
+There is a shell option, `xpg_echo', settable with `shopt', that will
+change the behavior of echo at runtime. Enabling this option turns
+on expansion of backslash-escape sequences.
+
+E6) Why doesn't a while or for loop get suspended when I type ^Z?
+
+This is a consequence of how job control works on Unix. The only
+thing that can be suspended is the process group. This is a single
+command or pipeline of commands that the shell forks and executes.
+
+When you run a while or for loop, the only thing that the shell forks
+and executes are any commands in the while loop test and commands in
+the loop bodies. These, therefore, are the only things that can be
+suspended when you type ^Z.
+
+If you want to be able to stop the entire loop, you need to put it
+within parentheses, which will force the loop into a subshell that
+may be stopped (and subsequently restarted) as a single unit.
+
+E7) What about empty for loops in Makefiles?
+
+It's fairly common to see constructs like this in automatically-generated
+Makefiles:
+
+SUBDIRS = @SUBDIRS@
+
+ ...
+
+subdirs-clean:
+ for d in ${SUBDIRS}; do \
+ ( cd $$d && ${MAKE} ${MFLAGS} clean ) \
+ done
+
+When SUBDIRS is empty, this results in a command like this being passed to
+bash:
+
+ for d in ; do
+ ( cd $d && ${MAKE} ${MFLAGS} clean )
+ done
+
+In versions of bash before bash-2.05a, this was a syntax error. If the
+reserved word `in' was present, a word must follow it before the semicolon
+or newline. The language in the manual page referring to the list of words
+being empty referred to the list after it is expanded. These versions of
+bash required that there be at least one word following the `in' when the
+construct was parsed.
+
+The idiomatic Makefile solution is something like:
+
+SUBDIRS = @SUBDIRS@
+
+subdirs-clean:
+ subdirs=$SUBDIRS ; for d in $$subdirs; do \
+ ( cd $$d && ${MAKE} ${MFLAGS} clean ) \
+ done
+
+The latest drafts of the updated POSIX standard have changed this: the
+word list is no longer required. Bash versions 2.05a and later accept
+the new syntax.
+
+E8) Why does the arithmetic evaluation code complain about `08'?
+
+The bash arithmetic evaluation code (used for `let', $(()), (()), and in
+other places), interprets a leading `0' in numeric constants as denoting
+an octal number, and a leading `0x' as denoting hexadecimal. This is
+in accordance with the POSIX.2 spec, section 2.9.2.1, which states that
+arithmetic constants should be handled as signed long integers as defined
+by the ANSI/ISO C standard.
+
+The POSIX.2 interpretation committee has confirmed this:
+
+http://www.pasc.org/interps/unofficial/db/p1003.2/pasc-1003.2-173.html
+
+E9) Why does the pattern matching expression [A-Z]* match files beginning
+ with every letter except `z'?
+
+Bash-2.03, Bash-2.05 and later versions honor the current locale setting
+when processing ranges within pattern matching bracket expressions ([A-Z]).
+This is what POSIX.2 and SUSv3/XPG6 specify.
+
+The behavior of the matcher in bash-2.05 and later versions depends on the
+current LC_COLLATE setting. Setting this variable to `C' or `POSIX' will
+result in the traditional behavior ([A-Z] matches all uppercase ASCII
+characters). Many other locales, including the en_US locale (the default
+on many US versions of Linux) collate the upper and lower case letters like
+this:
+
+ AaBb...Zz
+
+which means that [A-Z] matches every letter except `z'. Others collate like
+
+ aAbBcC...zZ
+
+which means that [A-Z] matches every letter except `a'.
+
+The portable way to specify upper case letters is [:upper:] instead of
+A-Z; lower case may be specified as [:lower:] instead of a-z.
+
+Look at the manual pages for setlocale(3), strcoll(3), and, if it is
+present, locale(1). If you have locale(1), you can use it to find
+your current locale information even if you do not have any of the
+LC_ variables set.
+
+My advice is to put
+
+ export LC_COLLATE=C
+
+into /etc/profile and inspect any shell scripts run from cron for
+constructs like [A-Z]. This will prevent things like
+
+ rm [A-Z]*
+
+from removing every file in the current directory except those beginning
+with `z' and still allow individual users to change the collation order.
+Users may put the above command into their own profiles as well, of course.
+
+E10) Why does `cd //' leave $PWD as `//'?
+
+POSIX.2, in its description of `cd', says that *three* or more leading
+slashes may be replaced with a single slash when canonicalizing the
+current working directory.
+
+This is, I presume, for historical compatibility. Certain versions of
+Unix, and early network file systems, used paths of the form
+//hostname/path to access `path' on server `hostname'.
+
+E11) If I resize my xterm while another program is running, why doesn't bash
+ notice the change?
+
+This is another issue that deals with job control.
+
+The kernel maintains a notion of a current terminal process group. Members
+of this process group (processes whose process group ID is equal to the
+current terminal process group ID) receive terminal-generated signals like
+SIGWINCH. (For more details, see the JOB CONTROL section of the bash
+man page.)
+
+If a terminal is resized, the kernel sends SIGWINCH to each member of
+the terminal's current process group (the `foreground' process group).
+
+When bash is running with job control enabled, each pipeline (which may be
+a single command) is run in its own process group, different from bash's
+process group. This foreground process group receives the SIGWINCH; bash
+does not. Bash has no way of knowing that the terminal has been resized.
+
+There is a `checkwinsize' option, settable with the `shopt' builtin, that
+will cause bash to check the window size and adjust its idea of the
+terminal's dimensions each time a process stops or exits and returns control
+of the terminal to bash. Enable it with `shopt -s checkwinsize'.
+
+Section F: Things to watch out for on certain Unix versions
+
+F1) Why can't I use command line editing in my `cmdtool'?
+
+The problem is `cmdtool' and bash fighting over the input. When
+scrolling is enabled in a cmdtool window, cmdtool puts the tty in
+`raw mode' to permit command-line editing using the mouse for
+applications that cannot do it themselves. As a result, bash and
+cmdtool each try to read keyboard input immediately, with neither
+getting enough of it to be useful.
+
+This mode also causes cmdtool to not implement many of the
+terminal functions and control sequences appearing in the
+`sun-cmd' termcap entry. For a more complete explanation, see
+that file examples/suncmd.termcap in the bash distribution.
+
+`xterm' is a better choice, and gets along with bash much more
+smoothly.
+
+If you must use cmdtool, you can use the termcap description in
+examples/suncmd.termcap. Set the TERMCAP variable to the terminal
+description contained in that file, i.e.
+
+TERMCAP='Mu|sun-cmd:am:bs:km:pt:li#34:co#80:cl=^L:ce=\E[K:cd=\E[J:rs=\E[s:'
+
+Then export TERMCAP and start a new cmdtool window from that shell.
+The bash command-line editing should behave better in the new
+cmdtool. If this works, you can put the assignment to TERMCAP
+in your bashrc file.
+
+F2) I built bash on Solaris 2. Why do globbing expansions and filename
+ completion chop off the first few characters of each filename?
+
+This is the consequence of building bash on SunOS 5 and linking
+with the libraries in /usr/ucblib, but using the definitions
+and structures from files in /usr/include.
+
+The actual conflict is between the dirent structure in
+/usr/include/dirent.h and the struct returned by the version of
+`readdir' in libucb.a (a 4.3-BSD style `struct direct').
+
+Make sure you've got /usr/ccs/bin ahead of /usr/ucb in your $PATH
+when configuring and building bash. This will ensure that you
+use /usr/ccs/bin/cc or acc instead of /usr/ucb/cc and that you
+link with libc before libucb.
+
+If you have installed the Sun C compiler, you may also need to
+put /usr/ccs/bin and /opt/SUNWspro/bin into your $PATH before
+/usr/ucb.
+
+F3) Why does bash dump core after I interrupt username completion or
+ `~user' tilde expansion on a machine running NIS?
+
+This is a famous and long-standing bug in the SunOS YP (sorry, NIS)
+client library, which is part of libc.
+
+The YP library code keeps static state -- a pointer into the data
+returned from the server. When YP initializes itself (setpwent),
+it looks at this pointer and calls free on it if it's non-null.
+So far, so good.
+
+If one of the YP functions is interrupted during getpwent (the
+exact function is interpretwithsave()), and returns NULL, the
+pointer is freed without being reset to NULL, and the function
+returns. The next time getpwent is called, it sees that this
+pointer is non-null, calls free, and the bash free() blows up
+because it's being asked to free freed memory.
+
+The traditional Unix mallocs allow memory to be freed multiple
+times; that's probably why this has never been fixed. You can
+run configure with the `--without-gnu-malloc' option to use
+the C library malloc and avoid the problem.
+
+F4) I'm running SVR4.2. Why is the line erased every time I type `@'?
+
+The `@' character is the default `line kill' character in most
+versions of System V, including SVR4.2. You can change this
+character to whatever you want using `stty'. For example, to
+change the line kill character to control-u, type
+
+ stty kill ^U
+
+where the `^' and `U' can be two separate characters.
+
+F5) Why does bash report syntax errors when my C News scripts use a
+ redirection before a subshell command?
+
+The actual command in question is something like
+
+ < file ( command )
+
+According to the grammar given in the POSIX.2 standard, this construct
+is, in fact, a syntax error. Redirections may only precede `simple
+commands'. A subshell construct such as the above is one of the shell's
+`compound commands'. A redirection may only follow a compound command.
+
+This affects the mechanical transformation of commands that use `cat'
+to pipe a file into a command (a favorite Useless-Use-Of-Cat topic on
+comp.unix.shell). While most commands of the form
+
+ cat file | command
+
+can be converted to `< file command', shell control structures such as
+loops and subshells require `command < file'.
+
+The file CWRU/sh-redir-hack in the bash-2.05a distribution is an
+(unofficial) patch to parse.y that will modify the grammar to
+support this construct. It will not apply with `patch'; you must
+modify parse.y by hand. Note that if you apply this, you must
+recompile with -DREDIRECTION_HACK. This introduces a large
+number of reduce/reduce conflicts into the shell grammar.
+
+F6) Why can't I use vi-mode editing on Red Hat Linux 6.1?
+
+The short answer is that Red Hat screwed up.
+
+The long answer is that they shipped an /etc/inputrc that only works
+for emacs mode editing, and then screwed all the vi users by setting
+INPUTRC to /etc/inputrc in /etc/profile.
+
+The short fix is to do one of the following: remove or rename
+/etc/inputrc, set INPUTRC=~/.inputrc in ~/.bashrc (or .bash_profile,
+but make sure you export it if you do), remove the assignment to
+INPUTRC from /etc/profile, add
+
+ set keymap emacs
+
+to the beginning of /etc/inputrc, or bracket the key bindings in
+/etc/inputrc with these lines
+
+ $if mode=emacs
+ [...]
+ $endif
+
+F7) Why do bash-2.05a and bash-2.05b fail to compile `printf.def' on
+ HP/UX 11.x?
+
+HP/UX's support for long double is imperfect at best.
+
+GCC will support it without problems, but the HP C library functions
+like strtold(3) and printf(3) don't actually work with long doubles.
+HP implemented a `long_double' type as a 4-element array of 32-bit
+ints, and that is what the library functions use. The ANSI C
+`long double' type is a 128-bit floating point scalar.
+
+The easiest fix, until HP fixes things up, is to edit the generated
+config.h and #undef the HAVE_LONG_DOUBLE line. After doing that,
+the compilation should complete successfully.
+
+Section G: How can I get bash to do certain common things?
+
+G1) How can I get bash to read and display eight-bit characters?
+
+This is a process requiring several steps.
+
+First, you must ensure that the `physical' data path is a full eight
+bits. For xterms, for example, the `vt100' resources `eightBitInput'
+and `eightBitOutput' should be set to `true'.
+
+Once you have set up an eight-bit path, you must tell the kernel and
+tty driver to leave the eighth bit of characters alone when processing
+keyboard input. Use `stty' to do this:
+
+ stty cs8 -istrip -parenb
+
+For old BSD-style systems, you can use
+
+ stty pass8
+
+You may also need
+
+ stty even odd
+
+Finally, you need to tell readline that you will be inputting and
+displaying eight-bit characters. You use readline variables to do
+this. These variables can be set in your .inputrc or using the bash
+`bind' builtin. Here's an example using `bind':
+
+ bash$ bind 'set convert-meta off'
+ bash$ bind 'set meta-flag on'
+ bash$ bind 'set output-meta on'
+
+The `set' commands between the single quotes may also be placed
+in ~/.inputrc.
+
+G2) How do I write a function `x' to replace builtin command `x', but
+ still invoke the command from within the function?
+
+This is why the `command' and `builtin' builtins exist. The
+`command' builtin executes the command supplied as its first
+argument, skipping over any function defined with that name. The
+`builtin' builtin executes the builtin command given as its first
+argument directly.
+
+For example, to write a function to replace `cd' that writes the
+hostname and current directory to an xterm title bar, use
+something like the following:
+
+ cd()
+ {
+ builtin cd "$@" && xtitle "$HOST: $PWD"
+ }
+
+This could also be written using `command' instead of `builtin';
+the version above is marginally more efficient.
+
+G3) How can I find the value of a shell variable whose name is the value
+ of another shell variable?
+
+Versions of Bash newer than Bash-2.0 support this directly. You can use
+
+ ${!var}
+
+For example, the following sequence of commands will echo `z':
+
+ var1=var2
+ var2=z
+ echo ${!var1}
+
+For sh compatibility, use the `eval' builtin. The important
+thing to remember is that `eval' expands the arguments you give
+it again, so you need to quote the parts of the arguments that
+you want `eval' to act on.
+
+For example, this expression prints the value of the last positional
+parameter:
+
+ eval echo \"\$\{$#\}\"
+
+The expansion of the quoted portions of this expression will be
+deferred until `eval' runs, while the `$#' will be expanded
+before `eval' is executed. In versions of bash later than bash-2.0,
+
+ echo ${!#}
+
+does the same thing.
+
+This is not the same thing as ksh93 `nameref' variables, though the syntax
+is similar. I may add namerefs in a future bash version.
+
+G4) How can I make the bash `time' reserved word print timing output that
+ looks like the output from my system's /usr/bin/time?
+
+The bash command timing code looks for a variable `TIMEFORMAT' and
+uses its value as a format string to decide how to display the
+timing statistics.
+
+The value of TIMEFORMAT is a string with `%' escapes expanded in a
+fashion similar in spirit to printf(3). The manual page explains
+the meanings of the escape sequences in the format string.
+
+If TIMEFORMAT is not set, bash acts as if the following assignment had
+been performed:
+
+ TIMEFORMAT=$'\nreal\t%3lR\nuser\t%3lU\nsys\t%3lS'
+
+The POSIX.2 default time format (used by `time -p command') is
+
+ TIMEFORMAT=$'real %2R\nuser %2U\nsys %2S'
+
+The BSD /usr/bin/time format can be emulated with:
+
+ TIMEFORMAT=$'\t%1R real\t%1U user\t%1S sys'
+
+The System V /usr/bin/time format can be emulated with:
+
+ TIMEFORMAT=$'\nreal\t%1R\nuser\t%1U\nsys\t%1S'
+
+The ksh format can be emulated with:
+
+ TIMEFORMAT=$'\nreal\t%2lR\nuser\t%2lU\nsys\t%2lS'
+
+G5) How do I get the current directory into my prompt?
+
+Bash provides a number of backslash-escape sequences which are expanded
+when the prompt string (PS1 or PS2) is displayed. The full list is in
+the manual page.
+
+The \w expansion gives the full pathname of the current directory, with
+a tilde (`~') substituted for the current value of $HOME. The \W
+expansion gives the basename of the current directory. To put the full
+pathname of the current directory into the path without any tilde
+subsitution, use $PWD. Here are some examples:
+
+ PS1='\w$ ' # current directory with tilde
+ PS1='\W$ ' # basename of current directory
+ PS1='$PWD$ ' # full pathname of current directory
+
+The single quotes are important in the final example to prevent $PWD from
+being expanded when the assignment to PS1 is performed.
+
+G6) How can I rename "*.foo" to "*.bar"?
+
+Use the pattern removal functionality described in D3. The following `for'
+loop will do the trick:
+
+ for f in *.foo; do
+ mv $f ${f%foo}bar
+ done
+
+G7) How can I translate a filename from uppercase to lowercase?
+
+The script examples/functions/lowercase, originally written by John DuBois,
+will do the trick. The converse is left as an exercise.
+
+G8) How can I write a filename expansion (globbing) pattern that will match
+ all files in the current directory except "." and ".."?
+
+You must have set the `extglob' shell option using `shopt -s extglob' to use
+this:
+
+ echo .!(.|) *
+
+A solution that works without extended globbing is given in the Unix Shell
+FAQ, posted periodically to comp.unix.shell.
+
+Section H: Where do I go from here?
+
+H1) How do I report bugs in bash, and where should I look for fixes and
+ advice?
+
+Use the `bashbug' script to report bugs. It is built and
+installed at the same time as bash. It provides a standard
+template for reporting a problem and automatically includes
+information about your configuration and build environment.
+
+`bashbug' sends its reports to bug-bash@gnu.org, which
+is a large mailing list gatewayed to the usenet newsgroup gnu.bash.bug.
+
+Bug fixes, answers to questions, and announcements of new releases
+are all posted to gnu.bash.bug. Discussions concerning bash features
+and problems also take place there.
+
+To reach the bash maintainers directly, send mail to
+bash-maintainers@gnu.org.
+
+H2) What kind of bash documentation is there?
+
+First, look in the doc directory in the bash distribution. It should
+contain at least the following files:
+
+bash.1 an extensive, thorough Unix-style manual page
+builtins.1 a manual page covering just bash builtin commands
+bashref.texi a reference manual in GNU tex`info format
+bashref.info an info version of the reference manual
+FAQ this file
+article.ms text of an article written for The Linux Journal
+readline.3 a man page describing readline
+
+Postscript, HTML, and ASCII files created from the above source are
+available in the documentation distribution.
+
+There is additional documentation available for anonymous FTP from host
+ftp.cwru.edu in the `pub/bash' directory.
+
+Cameron Newham and Bill Rosenblatt have written a book on bash, published
+by O'Reilly and Associates. The book is based on Bill Rosenblatt's Korn
+Shell book. The title is ``Learning the Bash Shell'', and the ISBN number
+is 1-56592-147-X. Look for it in fine bookstores near you. This book
+covers bash-1.14, but has an appendix describing some of the new features
+in bash-2.0.
+
+A second edition of this book is available, published in January, 1998.
+The ISBN number is 1-56592-347-2. Look for it in the same fine bookstores
+or on the web.
+
+The GNU Bash Reference Manual has been published as a printed book by
+Network Theory Ltd (Paperback, ISBN: 0-9541617-7-7, Feb 2003). It covers
+bash-2.0 and is available from most online bookstores (see
+http://www.network-theory.co.uk/bash/manual/ for details). The publisher
+will donate $1 to the Free Software Foundation for each copy sold.
+
+H3) What's coming in future versions?
+
+These are features I hope to include in a future version of bash.
+
+a better bash debugger (a minimally-tested version is included with bash-2.05b)
+associative arrays
+co-processes, but with a new-style syntax that looks like function declaration
+
+H4) What's on the bash `wish list' for future versions?
+
+These are features that may or may not appear in a future version of bash.
+
+breaking some of the shell functionality into embeddable libraries
+a module system like zsh's, using dynamic loading like builtins
+better internationalization using GNU `gettext'
+date-stamped command history
+a bash programmer's guide with a chapter on creating loadable builtins
+a better loadable interface to perl with access to the shell builtins and
+ variables (contributions gratefully accepted)
+ksh93-like `nameref' variables
+ksh93-like `+=' variable assignment operator
+ksh93-like `xx.yy' variables (including some of the .sh.* variables) and
+ associated disipline functions
+Some of the new ksh93 pattern matching operators, like backreferencing
+
+H5) When will the next release appear?
+
+The next version will appear sometime in 2002. Never make predictions.
+
+
+This document is Copyright 1995-2003 by Chester Ramey.
+
+Permission is hereby granted, without written agreement and
+without license or royalty fees, to use, copy, and distribute
+this document for any purpose, provided that the above copyright
+notice appears in all copies of this document and that the
+contents of this document remain unaltered.
--- /dev/null
+#
+# Simple makefile for the sample loadable builtins
+#
+# Copyright (C) 1996 Free Software Foundation, Inc.
+
+# This program 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 2, or (at your option)
+# any later version.
+
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
+
+# Include some boilerplate Gnu makefile definitions.
+prefix = @prefix@
+
+exec_prefix = @exec_prefix@
+bindir = @bindir@
+libdir = @libdir@
+infodir = @infodir@
+includedir = @includedir@
+
+topdir = @top_srcdir@
+BUILD_DIR = @BUILD_DIR@
+srcdir = @srcdir@
+VPATH = .:@srcdir@
+
+@SET_MAKE@
+CC = @CC@
+RM = rm -f
+
+SHELL = @MAKE_SHELL@
+
+host_os = @host_os@
+host_cpu = @host_cpu@
+host_vendor = @host_vendor@
+
+CFLAGS = @CFLAGS@
+LOCAL_CFLAGS = @LOCAL_CFLAGS@
+DEFS = @DEFS@
+LOCAL_DEFS = @LOCAL_DEFS@
+
+CPPFLAGS = @CPPFLAGS@
+
+BASHINCDIR = ${topdir}/include
+
+LIBBUILD = ${BUILD_DIR}/lib
+
+INTL_LIBSRC = ${topdir}/lib/intl
+INTL_BUILDDIR = ${LIBBUILD}/intl
+INTL_INC = @INTL_INC@
+LIBINTL_H = @LIBINTL_H@
+
+CCFLAGS = $(DEFS) $(LOCAL_DEFS) $(LOCAL_CFLAGS) $(CFLAGS)
+
+#
+# These values are generated for configure by ${topdir}/support/shobj-conf.
+# If your system is not supported by that script, but includes facilities for
+# dynamic loading of shared objects, please update the script and send the
+# changes to bash-maintainers@gnu.org.
+#
+SHOBJ_CC = @SHOBJ_CC@
+SHOBJ_CFLAGS = @SHOBJ_CFLAGS@
+SHOBJ_LD = @SHOBJ_LD@
+SHOBJ_LDFLAGS = @SHOBJ_LDFLAGS@
+SHOBJ_XLDFLAGS = @SHOBJ_XLDFLAGS@
+SHOBJ_LIBS = @SHOBJ_LIBS@
+SHOBJ_STATUS = @SHOBJ_STATUS@
+
+INC = -I. -I.. -I$(topdir) -I$(topdir)/lib -I$(topdir)/builtins \
+ -I$(BASHINCDIR) -I$(BUILD_DIR) -I$(LIBBUILD) \
+ -I$(BUILD_DIR)/builtins $(INTL_INC)
+
+.c.o:
+ $(SHOBJ_CC) $(SHOBJ_CFLAGS) $(CCFLAGS) $(INC) -c -o $@ $<
+
+
+ALLPROG = print truefalse sleep pushd finfo logname basename dirname \
+ tty pathchk tee head mkdir rmdir printenv id whoami \
+ uname sync push ln unlink cut realpath getconf strftime
+OTHERPROG = necho hello cat
+
+all: $(SHOBJ_STATUS)
+
+supported: $(ALLPROG)
+others: $(OTHERPROG)
+
+unsupported:
+ @echo "Your system (${host_os}) is not supported by the"
+ @echo "${topdir}/support/shobj-conf script."
+ @echo "If your operating system provides facilities for dynamic"
+ @echo "loading of shared objects using the dlopen(3) interface,"
+ @echo "please update the script and re-run configure.
+ @echo "Please send the changes you made to bash-maintainers@gnu.org"
+ @echo "for inclusion in future bash releases."
+
+everything: supported others
+
+print: print.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ print.o $(SHOBJ_LIBS)
+
+necho: necho.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ necho.o $(SHOBJ_LIBS)
+
+getconf: getconf.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ getconf.o $(SHOBJ_LIBS)
+
+hello: hello.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ hello.o $(SHOBJ_LIBS)
+
+truefalse: truefalse.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ truefalse.o $(SHOBJ_LIBS)
+
+sleep: sleep.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ sleep.o $(SHOBJ_LIBS)
+
+finfo: finfo.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ finfo.o $(SHOBJ_LIBS)
+
+cat: cat.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ cat.o $(SHOBJ_LIBS)
+
+logname: logname.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ logname.o $(SHOBJ_LIBS)
+
+basename: basename.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ basename.o $(SHOBJ_LIBS)
+
+dirname: dirname.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ dirname.o $(SHOBJ_LIBS)
+
+tty: tty.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ tty.o $(SHOBJ_LIBS)
+
+pathchk: pathchk.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ pathchk.o $(SHOBJ_LIBS)
+
+tee: tee.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ tee.o $(SHOBJ_LIBS)
+
+mkdir: mkdir.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ mkdir.o $(SHOBJ_LIBS)
+
+rmdir: rmdir.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ rmdir.o $(SHOBJ_LIBS)
+
+head: head.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ head.o $(SHOBJ_LIBS)
+
+printenv: printenv.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ printenv.o $(SHOBJ_LIBS)
+
+id: id.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ id.o $(SHOBJ_LIBS)
+
+whoami: whoami.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ whoami.o $(SHOBJ_LIBS)
+
+uname: uname.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ uname.o $(SHOBJ_LIBS)
+
+sync: sync.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ sync.o $(SHOBJ_LIBS)
+
+push: push.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ push.o $(SHOBJ_LIBS)
+
+ln: ln.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ ln.o $(SHOBJ_LIBS)
+
+unlink: unlink.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ unlink.o $(SHOBJ_LIBS)
+
+cut: cut.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ cut.o $(SHOBJ_LIBS)
+
+realpath: realpath.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ realpath.o $(SHOBJ_LIBS)
+
+strftime: strftime.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ strftime.o $(SHOBJ_LIBS)
+
+# pushd is a special case. We use the same source that the builtin version
+# uses, with special compilation options.
+#
+pushd.c: ${topdir}/builtins/pushd.def
+ $(RM) $@
+ ${BUILD_DIR}/builtins/mkbuiltins -D ${topdir}/builtins ${topdir}/builtins/pushd.def
+
+pushd.o: pushd.c
+ $(RM) $@
+ $(SHOBJ_CC) -DHAVE_CONFIG_H -DPUSHD_AND_POPD -DLOADABLE_BUILTIN $(SHOBJ_CFLAGS) $(CFLAGS) $(CPPFLAGS) $(INC) -c -o $@ $<
+
+pushd: pushd.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ pushd.o $(SHOBJ_LIBS)
+
+clean:
+ $(RM) $(ALLPROG) $(OTHERPROG) *.o
+ -( cd perl && ${MAKE} ${MFLAGS} $@ )
+
+mostlyclean: clean
+ -( cd perl && ${MAKE} ${MFLAGS} $@ )
+
+distclean maintainer-clean: clean
+ $(RM) Makefile pushd.c
+ -( cd perl && ${MAKE} ${MFLAGS} $@ )
+
+print.o: print.c
+truefalse.o: truefalse.c
+sleep.o: sleep.c
+finfo.o: finfo.c
+logname.o: logname.c
+basename.o: basename.c
+dirname.o: dirname.c
+tty.o: tty.c
+pathchk.o: pathchk.c
+tee.o: tee.c
+head.o: head.c
+rmdir.o: rmdir.c
+necho.o: necho.c
+getconf.o: getconf.c
+hello.o: hello.c
+cat.o: cat.c
+printenv.o: printenv.c
+id.o: id.c
+whoami.o: whoami.c
+uname.o: uname.c
+sync.o: sync.c
+push.o: push.c
+mkdir.o: mkdir.c
+realpath.o: realpath.c
+strftime.o: strftime.c
if (job_control == 0)
#endif
{
+ /* Make sure we get the original signal dispositions now so we don't
+ confuse the trap builtin later if the subshell tries to use it to
+ reset SIGINT/SIGQUIT. Don't call set_signal_ignored; that sets
+ the value of original_signals to SIG_IGN. Posix interpretation 751. */
+ get_original_signal (SIGINT);
set_signal_handler (SIGINT, SIG_IGN);
- set_signal_ignored (SIGINT);
+
+ get_original_signal (SIGQUIT);
set_signal_handler (SIGQUIT, SIG_IGN);
- set_signal_ignored (SIGQUIT);
}
}
{
sltp = lasttp;
lasttp = stp;
+ while (lasttp && *lasttp && whitespace (*lasttp))
+ lasttp++;
evalerror (_("division by 0"));
lasttp = sltp;
}
/* Declarations for functions defined in lib/sh/itos.c */
extern char *inttostr __P((intmax_t, char *, size_t));
extern char *itos __P((intmax_t));
+extern char *mitos __P((intmax_t));
extern char *uinttostr __P((uintmax_t, char *, size_t));
extern char *uitos __P((uintmax_t));
extern char **strvec_create __P((int));
extern char **strvec_resize __P((char **, int));
+extern char **strvec_mcreate __P((int));
+extern char **strvec_mresize __P((char **, int));
extern void strvec_flush __P((char **));
extern void strvec_dispose __P((char **));
extern int strvec_remove __P((char **, char *));
--- /dev/null
+# This makefile for Readline library documentation is in -*- text -*- mode.
+# Emacs likes it that way.
+RM = rm -f
+
+MAKEINFO = makeinfo
+TEXI2DVI = texi2dvi
+TEXI2HTML = texi2html
+QUIETPS = #set this to -q to shut up dvips
+DVIPS = dvips -D 300 $(QUIETPS) -o $@ # tricky
+
+INSTALL_DATA = cp
+infodir = /usr/local/info
+
+RLSRC = rlman.texinfo rluser.texinfo rltech.texinfo
+HISTSRC = hist.texinfo hsuser.texinfo hstech.texinfo
+
+DVIOBJ = readline.dvi history.dvi
+INFOOBJ = readline.info history.info
+PSOBJ = readline.ps history.ps
+HTMLOBJ = readline.html history.html
+
+all: info dvi html ps
+nodvi: info html
+
+readline.dvi: $(RLSRC)
+ $(TEXI2DVI) rlman.texinfo
+ mv rlman.dvi readline.dvi
+
+readline.info: $(RLSRC)
+ $(MAKEINFO) --no-split -o $@ rlman.texinfo
+
+history.dvi: ${HISTSRC}
+ $(TEXI2DVI) hist.texinfo
+ mv hist.dvi history.dvi
+
+history.info: ${HISTSRC}
+ $(MAKEINFO) --no-split -o $@ hist.texinfo
+
+readline.ps: readline.dvi
+ $(RM) $@
+ $(DVIPS) readline.dvi
+
+history.ps: history.dvi
+ $(RM) $@
+ $(DVIPS) history.dvi
+
+readline.html: ${RLSRC}
+ $(TEXI2HTML) rlman.texinfo
+ sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman.html > readline.html
+ sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman_toc.html > readline_toc.html
+ $(RM) rlman.html rlman_toc.html
+
+history.html: ${HISTSRC}
+ $(TEXI2HTML) hist.texinfo
+ sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist.html > history.html
+ sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist_toc.html > history_toc.html
+ $(RM) hist.html hist_toc.html
+
+info: $(INFOOBJ)
+dvi: $(DVIOBJ)
+ps: $(PSOBJ)
+html: $(HTMLOBJ)
+
+clean:
+ $(RM) *.aux *.cp *.fn *.ky *.log *.pg *.toc *.tp *.vr *.cps *.pgs \
+ *.fns *.kys *.tps *.vrs *.o core
+
+distclean: clean
+mostlyclean: clean
+
+maintainer-clean: clean
+ $(RM) *.dvi *.info *.info-* *.ps *.html
+
+install: info
+ ${INSTALL_DATA} readline.info $(infodir)/readline.info
+ ${INSTALL_DATA} history.info $(infodir)/history.info
mktime.c strftime.c mbschr.c zcatfd.c zmapfd.c winsize.c eaccess.c \
wcsdup.c fpurge.c zgetline.c mbscmp.c uconvert.c ufuncs.c \
casemod.c dprintf.c input_avail.c mbscasecmp.c fnxform.c \
- strchrnul.c unicode.c wcswidth.c wcsnwidth.c shmbchar.c
+ strchrnul.c unicode.c wcswidth.c wcsnwidth.c shmbchar.c strdup.c
# The header files for this library.
HSOURCES =
return (savestring (p));
}
+/* Integer to string conversion. This conses the string using strdup;
+ caller should free it and be prepared to deal with NULL return. */
+char *
+mitos (i)
+ intmax_t i;
+{
+ char *p, lbuf[INT_STRLEN_BOUND(intmax_t) + 1];
+
+ p = fmtumax (i, 10, lbuf, sizeof(lbuf), 0);
+ return (strdup (p));
+}
+
char *
uinttostr (i, buf, len)
uintmax_t i;
--- /dev/null
+/* strdup - return a copy of a string in newly-allocated memory. */
+
+/* Copyright (C) 2013 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/>.
+*/
+
+
+#include <config.h>
+
+/* Get specification. */
+#include <string.h>
+#include <stdlib.h>
+
+/* Duplicate S, returning an identical malloc'd string. */
+char *
+strdup (s)
+ const char *s;
+{
+ size_t len;
+ void *new;
+
+ len = strlen (s) + 1;
+ if ((new = malloc (len)) == NULL)
+ return NULL;
+
+ memcpy (new, s, len);
+ return ((char *)new);
+}
return ((char **)xmalloc ((n) * sizeof (char *)));
}
+/* Allocate an array of strings with room for N members. */
+char **
+strvec_mcreate (n)
+ int n;
+{
+ return ((char **)malloc ((n) * sizeof (char *)));
+}
+
char **
strvec_resize (array, nsize)
char **array;
return ((char **)xrealloc (array, nsize * sizeof (char *)));
}
+char **
+strvec_mresize (array, nsize)
+ char **array;
+ int nsize;
+{
+ return ((char **)realloc (array, nsize * sizeof (char *)));
+}
+
/* Return the length of ARRAY, a NULL terminated array of char *. */
int
strvec_len (array)
#include "trap.h"
#include "builtins/common.h"
+#include "builtins/builtext.h"
#if defined (READLINE)
# include "bashline.h"
extern int history_lines_this_session;
#endif
extern int no_line_editing;
+extern int wait_signal_received;
+extern sh_builtin_func_t *this_shell_builtin;
extern void initialize_siglist ();
if (interactive_shell == 0 && XHANDLER (i) == SIG_IGN)
{
sigaction (XSIG (i), &oact, &act);
- set_signal_ignored (XSIG (i));
+ set_signal_hard_ignored (XSIG (i));
}
#if defined (SIGPROF) && !defined (_MINIX)
if (XSIG (i) == SIGPROF && XHANDLER (i) != SIG_DFL && XHANDLER (i) != SIG_IGN)
if (interactive_shell == 0 && XHANDLER (i) == SIG_IGN)
{
signal (XSIG (i), SIG_IGN);
- set_signal_ignored (XSIG (i));
+ set_signal_hard_ignored (XSIG (i));
}
#ifdef SIGPROF
if (XSIG (i) == SIGPROF && XHANDLER (i) != SIG_DFL && XHANDLER (i) != SIG_IGN)
if (interrupt_state == 0)
ADDINTERRUPT;
+ /* We will get here in interactive shells with job control active; allow
+ an interactive wait to be interrupted. */
+ if (this_shell_builtin && this_shell_builtin == wait_builtin)
+ {
+ last_command_exit_value = 128 + sig;
+ wait_signal_received = sig;
+ SIGRETURN (0);
+ }
+
if (interrupt_immediately)
{
interrupt_immediately = 0;
--- /dev/null
+:; ./shx
+
+sh:
+<&$fd ok
+nlbq Mon Aug 3 02:45:00 EDT 1992
+bang geoff
+quote 712824302
+setbq defmsgid=<1992Aug3.024502.6176@host>
+bgwait sleep done... wait 6187
+
+
+bash:
+<&$fd ok
+nlbq Mon Aug 3 02:45:09 EDT 1992
+bang geoff
+quote 712824311
+setbq defmsgid=<1992Aug3.024512.6212@host>
+bgwait sleep done... wait 6223
+
+
+ash:
+<&$fd shx1: 4: Syntax error: Bad fd number
+nlbq Mon Aug 3 02:45:19 EDT 1992
+bang geoff
+quote getdate: `"now"' not a valid date
+
+setbq defmsgid=<1992Aug3.` echo 024521
+bgwait sleep done... wait 6241
+
+
+ksh:
+<&$fd ok
+nlbq ./shx: 6248 Memory fault - core dumped
+bang geoff
+quote getdate: `"now"' not a valid date
+
+setbq defmsgid=<1992Aug3.024530.6257@host>
+bgwait no such job: 6265
+wait 6265
+sleep done...
+
+zsh:
+<&$fd ok
+nlbq Mon Aug 3 02:45:36 EDT 1992
+bang shx3: event not found: /s/ [4]
+quote 712824337
+setbq defmsgid=<..6290@host>
+bgwait shx7: unmatched " [9]
+sleep done...
+:;
--- /dev/null
+#! /bin/sh
+for cmd in sh bash ash ksh zsh
+do
+ echo
+ echo $cmd:
+ for demo in shx?
+ do
+ $cmd $demo
+ done
+done
}
void
-set_signal_ignored (sig)
+set_signal_hard_ignored (sig)
int sig;
{
sigmodes[sig] |= SIG_HARD_IGNORE;
original_signals[sig] = SIG_IGN;
}
+void
+set_signal_ignored (sig)
+ int sig;
+{
+ original_signals[sig] = SIG_IGN;
+}
+
int
signal_in_progress (sig)
int sig;
extern int signal_is_pending __P((int));
extern int signal_is_ignored __P((int));
extern int signal_is_hard_ignored __P((int));
+extern void set_signal_hard_ignored __P((int));
extern void set_signal_ignored __P((int));
extern int signal_in_progress __P((int));
projects / thirdparty / bash.git / commitdiff
