-This document details the changes between this version, bash-5.0-beta, and
-the previous version, bash-5.0-alpha.
+This document details the changes between this version, bash-5.0-beta2, and
+the previous version, bash-5.0-beta.
1. Changes to Bash
g. The ${parameter@a} expansion will display attributes even if `parameter' is
unset.
+h. Fixed a bug that caused the output of `set' to cut off some variables before
+ printing the value.
+
+i. Treat a failure to assign a variable when using the ${x:=value} expansion
+ as an expansion error, so non-interactive posix-mode shells exit
+
+j. Fixed a problem when expanding $* in a context where word splitting is not
+ performed when IFS is NULL.
+
+k. Temp files used to store here documents are forced readable, no matter what
+ the user's umask says.
+
+l. Fixed a problem where an interrupted brace expansion could cause the shell
+ to attempt to free an invalid memory location.
+
+m. Make sure to check for any terminating signals after running a trap
+ handler; don't wait until the next time we process traps.
+
+n. Fixed a bug that caused "return" to act like a special builtin with respect
+ to variable assignments even when preceded by "command".
+
+o. POSIX-mode shells now return failure if the cd builtin fails due to the
+ absolute directory name being longer than PATH_MAX, instead of trying
+ again with a relative pathname.
+
+p. Fixed a problem with FUNCNAME occasionally being visible when not executing
+ a shell function.
+
+q. Fixed a problem with the expansions performed on the WORD in the case
+ command.
+
+r. Fixed a slight POSIX compatibility when removing "IFS whitespace" during
+ word splitting and the read builtin.
+
+s. Fixed a problem with expanding an array with subscript `*' when all the
+ elements expand to the empty string, and making sure the expansion honors
+ the `:' specifier.
+
2. Changes to Readline
a. Fixed a bug with adding multibyte characters to an incremental search string.
paste mode is enabled. ESC cannot be one of the incremental search
terminator characters for this to work.
+d. Fixed a bug with anchored search patterns when performing searches in vi
+ mode.
+
3. New Features in Bash
a. Associative and indexed arrays now allow subscripts consisting solely of
g. Trap execution now honors the (internal) max invocations of `eval', since
traps are supposed to be executed as if using `eval'.
+h. The $_ variable doesn't change when the shell executes a command that forks.
+
+i. The `kill' builtin now supports -sSIGNAME and -nSIGNUM, even though
+ conforming applications aren't supposed to use them.
+
+j. POSIX mode now enables the `shift_verbose' option.
+
4. New Features in Readline
a. Readline now allows application-defined keymap names; there is a new public
function, rl_set_keymap_name(), to do that.
+b. The "Insert" keypad key, if available, now puts readline into overwrite
+ mode.
+
------------------------------------------------------------------------------
This document details the changes between this version, bash-5.0-beta, and
the previous version, bash-5.0-alpha.
+This document details the changes between this version, bash-5.0-beta2, and
+the previous version, bash-5.0-beta.
+
+1. Changes to Bash
+
+a. Fixed a bug that could cause a seg fault while parsing a subshell command
+ inside a command substitution.
+
+b. Fixed several small memory leaks uncovered by coverity.
+
+c. Fixed a problem with command substitution inside an interactive shell that
+ could cause the parent to receive a SIGHUP.
+
+d. Fixed a problem with using `*' and `@' as subscripts when assigning values
+ to an associative array with assoc_expand_once enabled.
+
+e. Fixed a bug that could cause a huge memory allocation when completing a
+ word beginning with an invalid tilde expansion.
+
+f. Cleaned up some incompatiblities with bash-4.4 when expanding indexed array
+ subscripts used in arithmetic expansions when assoc_expand_once is enabled.
+
+g. The ${parameter@a} expansion will display attributes even if `parameter' is
+ unset.
+
+h. Fixed a bug that caused the output of `set' to cut off some variables before
+ printing the value.
+
+i. Treat a failure to assign a variable when using the ${x:=value} expansion
+ as an expansion error, so non-interactive posix-mode shells exit
+
+j. Fixed a problem when expanding $* in a context where word splitting is not
+ performed when IFS is NULL.
+
+k. Temp files used to store here documents are forced readable, no matter what
+ the user's umask says.
+
+l. Fixed a problem where an interrupted brace expansion could cause the shell
+ to attempt to free an invalid memory location.
+
+m. Make sure to check for any terminating signals after running a trap
+ handler; don't wait until the next time we process traps.
+
+n. Fixed a bug that caused "return" to act like a special builtin with respect
+ to variable assignments even when preceded by "command".
+
+o. POSIX-mode shells now return failure if the cd builtin fails due to the
+ absolute directory name being longer than PATH_MAX, instead of trying
+ again with a relative pathname.
+
+p. Fixed a problem with FUNCNAME occasionally being visible when not executing
+ a shell function.
+
+q. Fixed a problem with the expansions performed on the WORD in the case
+ command.
+
+r. Fixed a slight POSIX compatibility when removing "IFS whitespace" during
+ word splitting and the read builtin.
+
+s. Fixed a problem with expanding an array with subscript `*' when all the
+ elements expand to the empty string, and making sure the expansion honors
+ the `:' specifier.
+
+2. Changes to Readline
+
+a. Fixed a bug with adding multibyte characters to an incremental search string.
+
+b. Fixed a bug with redoing text insertions in vi mode.
+
+c. Fixed a bug with pasting text into an incremental search string if bracketed
+ paste mode is enabled. ESC cannot be one of the incremental search
+ terminator characters for this to work.
+
+d. Fixed a bug with anchored search patterns when performing searches in vi
+ mode.
+
+3. New Features in Bash
+
+a. Associative and indexed arrays now allow subscripts consisting solely of
+ whitespace.
+
+b. `checkwinsize' is now enabled by default.
+
+c. The `localvar_unset' shopt option is now visible and documented.
+
+d. The `progcomp_alias' shopt option is now visible and documented.
+
+e. The signal name processing code now understands `SIGRTMIN+n' all the way
+ up to SIGRTMAX.
+
+f. There is a new `seq' loadable builtin.
+
+g. Trap execution now honors the (internal) max invocations of `eval', since
+ traps are supposed to be executed as if using `eval'.
+
+h. The $_ variable doesn't change when the shell executes a command that forks.
+
+i. The `kill' builtin now supports -sSIGNAME and -nSIGNUM, even though
+ conforming applications aren't supposed to use them.
+
+j. POSIX mode now enables the `shift_verbose' option.
+
+4. New Features in Readline
+
+a. Readline now allows application-defined keymap names; there is a new public
+ function, rl_set_keymap_name(), to do that.
+
+b. The "Insert" keypad key, if available, now puts readline into overwrite
+ mode.
+
+------------------------------------------------------------------------------
This document details the changes between this version, bash-5.0-beta, and
the previous version, bash-5.0-alpha.
doc/bashref.texi
- posix mode: note the effect of posix mode on shift_verbose
+
+ 11/12
+ -----
+subst.c
+ - parameter_brace_expand: if parameter_brace_expand_word returns an
+ error, make sure to set TEMP = 0 (to note that the variable is unset).
+ From a report by Grisha Levit <grishalevit@gmail.com>
+ - param_expand: if expanding $! when set -u is enabled, honor the
+ PF_IGNUNBOUND flag and just return NULL, relying on the caller to
+ take care of understanding that the variable is unset
+ From a report by Grisha Levit <grishalevit@gmail.com>
+ - parameter_brace_expand: if we are checking nullness, and we have a
+ valid array expansion, a quoted null string resulting from the array
+ expansion of a * or @ subscript satisfies the nullness check.
+ From a report by Grisha Levit <grishalevit@gmail.com>
hh. The `globasciiranges' option is now enabled by default; it can be set to
off by default at configuration time.
+ii. Associative and indexed arrays now allow subscripts consisting solely of
+ whitespace.
+
+jj. `checkwinsize' is now enabled by default.
+
+kk. The `localvar_unset' shopt option is now visible and documented.
+
+ll. The `progcomp_alias' shopt option is now visible and documented.
+
+mm. The signal name processing code now understands `SIGRTMIN+n' all the way
+ up to SIGRTMAX.
+
+nn. There is a new `seq' loadable builtin.
+
+oo. Trap execution now honors the (internal) max invocations of `eval', since
+ traps are supposed to be executed as if using `eval'.
+
+pp. The $_ variable doesn't change when the shell executes a command that forks.
+
+qq. The `kill' builtin now supports -sSIGNAME and -nSIGNUM, even though
+ conforming applications aren't supposed to use them.
+
+rr. POSIX mode now enables the `shift_verbose' option.
+
2. New Features in Readline
a. Non-incremental vi-mode search (`N', `n') can search for a shell pattern, as
initial quoting state, so quoting state can be inherited from a previous
line.
+j. Readline now allows application-defined keymap names; there is a new public
+ function, rl_set_keymap_name(), to do that.
+
+k. The "Insert" keypad key, if available, now puts readline into overwrite
+ mode.
+
-------------------------------------------------------------------------------
This is a terse description of the new features added to bash-4.4 since
the release of bash-4.3. As always, the manual page (doc/bash.1) is
hh. The `globasciiranges' option is now enabled by default; it can be set to
off by default at configuration time.
+ii. Associative and indexed arrays now allow subscripts consisting solely of
+ whitespace.
+
+jj. `checkwinsize' is now enabled by default.
+
+kk. The `localvar_unset' shopt option is now visible and documented.
+
+ll. The `progcomp_alias' shopt option is now visible and documented.
+
+mm. The signal name processing code now understands `SIGRTMIN+n' all the way
+ up to SIGRTMAX.
+
+nn. There is a new `seq' loadable builtin.
+
+oo. Trap execution now honors the (internal) max invocations of `eval', since
+ traps are supposed to be executed as if using `eval'.
+
+pp. The $_ variable doesn't change when the shell executes a command that forks.
+
+qq. The `kill' builtin now supports -sSIGNAME and -nSIGNUM, even though
+ conforming applications aren't supposed to use them.
+
+rr. POSIX mode now enables the `shift_verbose' option.
+
2. New Features in Readline
a. Non-incremental vi-mode search (`N', `n') can search for a shell pattern, as
i. The history library has a new variable that allows applications to set the
initial quoting state, so quoting state can be inherited from a previous
line.
+
+j. Readline now allows application-defined keymap names; there is a new public
+ function, rl_set_keymap_name(), to do that.
+
+k. The "Insert" keypad key, if available, now puts readline into overwrite
+ mode.
],
ac_cv_rl_version=`cat conftest.rlv`,
ac_cv_rl_version='0.0',
-ac_cv_rl_version='7.0')])
+ac_cv_rl_version='8.0')])
CFLAGS="$_save_CFLAGS"
LDFLAGS="$_save_LDFLAGS"
$as_echo_n "(cached) " >&6
else
if test "$cross_compiling" = yes; then :
- ac_cv_rl_version='7.0'
+ ac_cv_rl_version='8.0'
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
the embedded `break'. The dangling else accommodates a trailing semicolon;
we could also put in a do ; while (0) */
-
#define CHECK_STRING_OVERRUN(oind, ind, len, ch) \
if (ind >= len) \
{ \
else
tdesc = parameter_brace_expand_word (name, var_is_special, quoted, PF_IGNUNBOUND|(pflags&(PF_NOSPLIT2|PF_ASSIGNRHS)), &ind);
+ if (tdesc == &expand_wdesc_error || tdesc == &expand_wdesc_fatal)
+ {
+ tflag = 0;
+ tdesc = 0;
+ }
+
if (tdesc)
{
temp = tdesc->word;
/* XXX - this may not need to be restricted to special variables */
if (check_nullness)
var_is_null |= var_is_set && var_is_special && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && QUOTED_NULL (temp);
+#if defined (ARRAY_VARS)
+ if (check_nullness)
+ var_is_null |= var_is_set &&
+ (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) &&
+ QUOTED_NULL (temp) &&
+ valid_array_reference (name, 0) &&
+ chk_atstar (name, 0, (int *)0, (int *)0);
+#endif
/* Get the rest of the stuff inside the braces. */
if (c && c != RBRACE)
case '8':
case '9':
temp1 = dollar_vars[TODIGIT (c)];
+ /* This doesn't get called when (pflags&PF_IGNUNBOUND) != 0 */
if (unbound_vars_is_error && temp1 == (char *)NULL)
{
uerror[0] = '$';
if (expanded_something)
*expanded_something = 0;
temp = (char *)NULL;
- if (unbound_vars_is_error)
+ if (unbound_vars_is_error && (pflags & PF_IGNUNBOUND) == 0)
{
uerror[0] = '$';
uerror[1] = c;
-BUILD_DIR=/usr/local/build/chet/bash/bash-current
+BUILD_DIR=/usr/local/build/bash/bash-current
THIS_SH=$BUILD_DIR/bash
PATH=$PATH:$BUILD_DIR
argv[1] = <>
argv[2] = <>
a2
-argv[1] = <>
+argv[1] = <y>
+argv[1] = <z>
a3
argv[1] = <>
argv[2] = <x>
argv[2] = <x>
p3
argv[1] = <y>
+<X> <X> <X> <X>
+<X> <X> <X> <X>
./array23.sub: line 9: $( echo >&2 foo ) : syntax error: operand expected (error token is "$( echo >&2 foo ) ")
./array23.sub: line 10: $( echo >&2 foo ) : syntax error: operand expected (error token is "$( echo >&2 foo ) ")
foo
echo a2
a[1]=; recho "${a[@]:-y}"
+a[1]=; recho "${a[*]:-z}"
unset a
echo a3
echo p3
set '' x
recho ${@:+y}
+
+# problems with * and null expansions dating back to bash's earliest days
+A=(''); set -- ''
+
+echo "<${A[*]:-X}>" "<${*:-X}>" "<${A:-X}>" "<${A[0]:-X}>"
+
+IFS=
+A=('' ''); set -- '' ''
+B=''
+
+echo "<${A[*]:-X}>" "<${*:-X}>" "<${B:-X}>" "<${B[*]:-X}>"
${THIS_SH} -uc 'echo $1' ${THIS_SH} xnotthere >/dev/null || exit 21
${THIS_SH} -uc 'echo $2' ${THIS_SH} xnotthere 2>/dev/null && exit 22
${THIS_SH} -uc 'echo $2' ${THIS_SH} xnotthere ynotthere >/dev/null || exit 23
+
+${THIS_SH} -uc 'echo $! ; exit 24' 2>/dev/null
+${THIS_SH} -uc 'echo ${!} ; exit 25' 2>/dev/null
+${THIS_SH} -uc 'echo ${!,} ; exit 26' 2>/dev/null
+
+${THIS_SH} -uc 'echo ${!-ok 27} >/dev/null || exit 27'
+${THIS_SH} -uc 'echo ${2-ok 28} >/dev/null || exit 28'
+
exit 0
projects / thirdparty / bash.git / commitdiff
