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updates for nofork command substitution; changes for z/OS machines; fix for race in wait_for_any_job

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This commit is contained in:
Chet Ramey
2023-05-22 09:37:41 -04:00
parent e44e3d50de
commit 782af56204
32 changed files with 14816 additions and 12510 deletions
Download Patch File Download Diff File Expand all files Collapse all files
CWRU/CWRU.chlog
+58
View File
@@ -6331,3 +6331,61 @@ builtins/evalstring.c
doc/bash.1,doc/bashref.texi
- function substitution (or lambda substitution, or nofork command
substitution): document
5/15
----
subst.c
- function_substitute: make sure to decrement variable_context in the
unwind-protects since we don't unwind_protect it individually.
Report from Oguz <oguzismailuysal@gmail.com>
5/17
----
configure.ac
- i370 machines cannot use the bash malloc
Patch from Igor Todorovski <itodorov@ca.ibm.com>
support/signames.c
- initialize_signames: add support for z/OS signals.
Patch from Igor Todorovski <itodorov@ca.ibm.com>
lib/glob/smatch.c
- collseqcmp: new name for collequiv[_wc], that function apparently
exists in libc on z/OS
Patch from Igor Todorovski <itodorov@ca.ibm.com>
jobs.c
- mark_all_jobs_as_dead: make sure to reset js.j_ndead to the right
number of jobs in the array
execute_cmd.c
- execute_while_or_until: move call to REAP() after the action
executes, like other loop functions
shell.c,parse.y,lib/intl/gettextP.h
- add some __MVS__ checks for z/OS systems
5/18
----
jobs.c
- wait_for_any_job: catch jobs that can terminate and be reaped
when we call UNBLOCK_CHILD between the loop where we check the
jobs list for dead jobs and the loop where we check for running
jobs and poll for them with wait_for().
Fixes bug reported by Aleksey Covacevice <aleksey.covacevice@gmail.com>
5/20
----
subst.c
- read_comsub: quote CTLNUL if it's in $IFS and we're parsing the
RHS of an assignment statement
- comsub_quote_string: ditto
- comsub_shouldquote: break code that decides whether to CTLESC escape
a character read from a command substitution or $REPLY into its own
inline function; change read_comsub/comsub_quote_string callers
5/21
----
subst.c
- quote_escapes_internal: use ifs_cmap instead of iterating through
ifs_value to set skip_ctlesc and skip_ctlnul
MANIFEST
+3
View File
@@ -1017,6 +1017,9 @@ tests/comsub2.tests f
tests/comsub2.right f
tests/comsub21.sub f
tests/comsub22.sub f
tests/comsub23.sub f
tests/comsub24.sub f
tests/comsub25.sub f
tests/comsub-eof.tests f
tests/comsub-eof0.sub f
tests/comsub-eof1.sub f
configure
Vendored
+6940 -5367
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File diff suppressed because it is too large Load Diff
configure.ac
+2 -1
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@@ -21,7 +21,7 @@ dnl Process this file with autoconf to produce a configure script.
# 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 5.2, version 5.050])dnl
AC_REVISION([for Bash 5.2, version 5.051])dnl
define(bashvers, 5.2)
define(relstatus, maint)
@@ -75,6 +75,7 @@ m68k-sysv) opt_bash_malloc=no ;; # fixes file descriptor leak in closedir
*-beos*) opt_bash_malloc=no ;; # they say it's suitable
# These need additional investigation
sparc-linux*) opt_bash_malloc=no ;; # sparc running linux; requires ELF
i370-*) opt_bash_malloc=no ;; # IBM z/OS machines
*-aix*) opt_bash_malloc=no ;; # AIX machines
*-cygwin*) opt_bash_malloc=no ;; # Cygnus's CYGWIN environment
# These lack a working sbrk(2)
doc/bash.0
+12 -6
View File
@@ -1997,20 +1997,22 @@ EEXXPPAANNSSIIOONN
There is an alternate form of command substitution:
$${{_C _c_o_m_m_a_n_d;;}}
$${{_c _c_o_m_m_a_n_d;;}}
which executes _c_o_m_m_a_n_d in the current execution environment. This
means that side effects of _c_o_m_m_a_n_d take effect immediately in the cur-
rent execution environment and persist in the current environment after
the command completes (e.g., the eexxiitt builtin will exit the shell).
which executes _c_o_m_m_a_n_d in the current execution environment and cap-
tures its output, again with trailing newlines removed.
The character _C following the open brace must be a space, tab, newline,
The character _c following the open brace must be a space, tab, newline,
((, or ||, and the close brace must be in a position where a reserved
word may appear (i.e., preceded by a command terminator such as semi-
colon). BBaasshh allows the close brace to be joined to the remaining
characters in the word without being followed by a shell metacharacter
as a reserved word would usually require.
Any side effects of _c_o_m_m_a_n_d take effect immediately in the current exe-
cution environment and persist in the current environment after the
command completes (e.g., the eexxiitt builtin will exit the shell).
This type of command substitution superficially resembles executing an
unnamed shell function: local variables are created as when a shell
function is executing, and the rreettuurrnn builtin forces _c_o_m_m_a_n_d to com-
@@ -5134,6 +5136,8 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
of the _n_a_m_e_s is not a valid shell variable name, or --ff is sup-
plied with a _n_a_m_e that is not a function.
ffaallssee Does nothing, returns a non-zero status.
ffcc [--ee _e_n_a_m_e] [--llnnrr] [_f_i_r_s_t] [_l_a_s_t]
ffcc --ss [_p_a_t=_r_e_p] [_c_m_d]
The first form selects a range of commands from _f_i_r_s_t to _l_a_s_t
@@ -6360,6 +6364,8 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
or subshell environment when one is created. The return status
is false if any _s_i_g_s_p_e_c is invalid; otherwise ttrraapp returns true.
ttrruuee Does nothing, returns a 0 status.
ttyyppee [--aaffttppPP] _n_a_m_e [_n_a_m_e ...]
With no options, indicate how each _n_a_m_e would be interpreted if
used as a command name. If the --tt option is used, ttyyppee prints a
doc/bash.1
+15 -7
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@@ -3615,16 +3615,13 @@ parentheses make up the command; none are treated specially.
There is an alternate form of command substitution:
.RS
.PP
\fB${\fP\fIC\fP \fIcommand\fP\fB;\fP\|\fB}\fP
\fB${\fP\fIc\fP \fIcommand\fP\fB;\fP\|\fB}\fP
.RE
.PP
which executes \fIcommand\fP in the current execution environment.
This means that side effects of \fIcommand\fP take effect immediately
in the current execution environment and persist in the current
environment after the command completes (e.g., the \fBexit\fP builtin
will exit the shell).
which executes \fIcommand\fP in the current execution environment
and captures its output, again with trailing newlines removed.
.PP
The character \fIC\fP following the open brace must be a space, tab,
The character \fIc\fP following the open brace must be a space, tab,
newline, \fB(\fP, or \fB|\fP, and the close brace must be in a position
where a reserved word may appear (i.e., preceded by a command terminator
such as semicolon).
@@ -3632,6 +3629,11 @@ such as semicolon).
the word without being followed by a shell metacharacter as a reserved
word would usually require.
.PP
Any side effects of \fIcommand\fP take effect immediately
in the current execution environment and persist in the current
environment after the command completes (e.g., the \fBexit\fP builtin
will exit the shell).
.PP
This type of command substitution superficially resembles executing an
unnamed shell function: local variables are created as when a shell
function is executing, and the \fBreturn\fP builtin forces
@@ -8883,6 +8885,9 @@ is supplied with a
.I name
that is not a function.
.TP
\fBfalse\fP
Does nothing, returns a non-zero status.
.TP
\fBfc\fP [\fB\-e\fP \fIename\fP] [\fB\-lnr\fP] [\fIfirst\fP] [\fIlast\fP]
.PD 0
.TP
@@ -11140,6 +11145,9 @@ is invalid; otherwise
.B trap
returns true.
.TP
\fBtrue\fP
Does nothing, returns a 0 status.
.TP
\fBtype\fP [\fB\-aftpP\fP] \fIname\fP [\fIname\fP ...]
With no options,
indicate how each
doc/bash.html
+16 -9
View File
@@ -4510,19 +4510,16 @@ There is an alternate form of command substitution:
<DL COMPACT><DT><DD>
<P>
<B>${</B><I>C</I> <I>command</I><B>;</B><B>}</B>
<B>${</B><I>c</I> <I>command</I><B>;</B><B>}</B>
</DL>
<P>
which executes <I>command</I> in the current execution environment.
This means that side effects of <I>command</I> take effect immediately
in the current execution environment and persist in the current
environment after the command completes (e.g., the <B>exit</B> builtin
will exit the shell).
which executes <I>command</I> in the current execution environment
and captures its output, again with trailing newlines removed.
<P>
The character <I>C</I> following the open brace must be a space, tab,
The character <I>c</I> following the open brace must be a space, tab,
newline, <B>(</B>, or <B>|</B>, and the close brace must be in a position
where a reserved word may appear (i.e., preceded by a command terminator
such as semicolon).
@@ -4531,6 +4528,12 @@ the word without being followed by a shell metacharacter as a reserved
word would usually require.
<P>
Any side effects of <I>command</I> take effect immediately
in the current execution environment and persist in the current
environment after the command completes (e.g., the <B>exit</B> builtin
will exit the shell).
<P>
This type of command substitution superficially resembles executing an
unnamed shell function: local variables are created as when a shell
function is executing, and the <B>return</B> builtin forces
@@ -11192,6 +11195,8 @@ is supplied with a
<I>name</I>
that is not a function.
<DT><B>false</B><DD>
Does nothing, returns a non-zero status.
<DT><B>fc</B> [<B>-e</B> <I>ename</I>] [<B>-lnr</B>] [<I>first</I>] [<I>last</I>]<DD>
<DT><B>fc</B> <B>-s</B> [<I>pat</I>=<I>rep</I>] [<I>cmd</I>]<DD>
@@ -13993,6 +13998,8 @@ is invalid; otherwise
<B>trap</B>
returns true.
<DT><B>true</B><DD>
Does nothing, returns a 0 status.
<DT><B>type</B> [<B>-aftpP</B>] <I>name</I> [<I>name</I> ...]<DD>
With no options,
indicate how each
@@ -15101,7 +15108,7 @@ There may be only one active coprocess at a time.
<DT><A HREF="#lbDI">BUGS</A><DD>
</DL>
<HR>
This document was created by man2html from /usr/local/src/bash/bash-20230509/doc/bash.1.<BR>
Time: 14 May 2023 15:37:14 EDT
This document was created by man2html from /usr/local/src/bash/bash-20230515/doc/bash.1.<BR>
Time: 20 May 2023 11:02:33 EDT
</BODY>
</HTML>
doc/bash.info
+129 -113
View File
@@ -2245,7 +2245,7 @@ command is enclosed as follows:
or (deprecated)
`COMMAND`.
Bash performs the expansion by executing COMMAND in a subshell
Bash performs command substitution by executing COMMAND in a subshell
environment and replacing the command substitution with the standard
output of the command, with any trailing newlines deleted. Embedded
newlines are not deleted, but they may be removed during word splitting.
@@ -2262,10 +2262,8 @@ the parentheses make up the command; none are treated specially.
${C COMMAND; }
which executes COMMAND in the current execution environment. This means
that side effects of COMMAND take effect immediately in the current
execution environment and persist in the current environment after the
command completes (e.g., the 'exit' builtin will exit the shell).
which executes COMMAND in the current execution environment and captures
its output, again with trailing newlines removed.
The character C following the open brace must be a space, tab,
newline, '(', or '|', and the close brace must be in a position where a
@@ -2274,6 +2272,10 @@ semicolon). Bash allows the close brace to be joined to the remaining
characters in the word without being followed by a shell metacharacter
as a reserved word would usually require.
Any side effects of COMMAND take effect immediately in the current
execution environment and persist in the current environment after the
command completes (e.g., the 'exit' builtin will exit the shell).
This type of command substitution superficially resembles executing
an unnamed shell function: local variables are created as when a shell
function is executing, and the 'return' builtin forces COMMAND to
@@ -3402,6 +3404,11 @@ standard.
of the names is not a valid shell variable name, or '-f' is
supplied with a name that is not a shell function.
'false'
false
Does nothing, returns a non-zero status.
'getopts'
getopts OPTSTRING NAME [ARG ...]
@@ -3682,6 +3689,11 @@ standard.
The return status is zero unless a SIGSPEC does not specify a valid
signal.
'true'
true
Does nothing, returns a 0 status.
'umask'
umask [-p] [-S] [MODE]
@@ -11993,7 +12005,7 @@ D.1 Index of Shell Builtin Commands
* :: Bourne Shell Builtins.
(line 11)
* [: Bourne Shell Builtins.
(line 275)
(line 280)
* alias: Bash Builtins. (line 11)
* bg: Job Control Builtins.
(line 7)
@@ -12028,14 +12040,16 @@ D.1 Index of Shell Builtin Commands
(line 125)
* export: Bourne Shell Builtins.
(line 132)
* false: Bourne Shell Builtins.
(line 148)
* fc: Bash History Builtins.
(line 10)
* fg: Job Control Builtins.
(line 17)
* getopts: Bourne Shell Builtins.
(line 148)
(line 153)
* hash: Bourne Shell Builtins.
(line 192)
(line 197)
* help: Bash Builtins. (line 342)
* history: Bash History Builtins.
(line 46)
@@ -12053,34 +12067,36 @@ D.1 Index of Shell Builtin Commands
* pushd: Directory Stack Builtins.
(line 69)
* pwd: Bourne Shell Builtins.
(line 212)
(line 217)
* read: Bash Builtins. (line 504)
* readarray: Bash Builtins. (line 601)
* readonly: Bourne Shell Builtins.
(line 222)
(line 227)
* return: Bourne Shell Builtins.
(line 241)
(line 246)
* set: The Set Builtin. (line 11)
* shift: Bourne Shell Builtins.
(line 262)
(line 267)
* shopt: The Shopt Builtin. (line 9)
* source: Bash Builtins. (line 610)
* suspend: Job Control Builtins.
(line 116)
* test: Bourne Shell Builtins.
(line 275)
(line 280)
* times: Bourne Shell Builtins.
(line 360)
(line 365)
* trap: Bourne Shell Builtins.
(line 366)
(line 371)
* true: Bourne Shell Builtins.
(line 433)
* type: Bash Builtins. (line 615)
* typeset: Bash Builtins. (line 653)
* ulimit: Bash Builtins. (line 659)
* umask: Bourne Shell Builtins.
(line 428)
(line 438)
* unalias: Bash Builtins. (line 765)
* unset: Bourne Shell Builtins.
(line 446)
(line 456)
* wait: Job Control Builtins.
(line 76)
@@ -12789,102 +12805,102 @@ Node: Brace Expansion72539
Node: Tilde Expansion75270
Node: Shell Parameter Expansion77888
Node: Command Substitution96287
Node: Arithmetic Expansion99876
Node: Process Substitution100841
Node: Word Splitting101958
Node: Filename Expansion104003
Node: Pattern Matching106933
Node: Quote Removal111932
Node: Redirections112224
Node: Executing Commands121914
Node: Simple Command Expansion122581
Node: Command Search and Execution124688
Node: Command Execution Environment127072
Node: Environment130104
Node: Exit Status131764
Node: Signals133545
Node: Shell Scripts136991
Node: Shell Builtin Commands140015
Node: Bourne Shell Builtins142050
Node: Bash Builtins164246
Node: Modifying Shell Behavior196242
Node: The Set Builtin196584
Node: The Shopt Builtin207179
Node: Special Builtins223088
Node: Shell Variables224064
Node: Bourne Shell Variables224498
Node: Bash Variables226599
Node: Bash Features260661
Node: Invoking Bash261671
Node: Bash Startup Files267681
Node: Interactive Shells272809
Node: What is an Interactive Shell?273217
Node: Is this Shell Interactive?273863
Node: Interactive Shell Behavior274675
Node: Bash Conditional Expressions278301
Node: Shell Arithmetic282940
Node: Aliases285898
Node: Arrays288789
Node: The Directory Stack295349
Node: Directory Stack Builtins296130
Node: Controlling the Prompt300387
Node: The Restricted Shell303349
Node: Bash POSIX Mode305956
Node: Shell Compatibility Mode321746
Node: Job Control329987
Node: Job Control Basics330444
Node: Job Control Builtins335443
Node: Job Control Variables341235
Node: Command Line Editing342388
Node: Introduction and Notation344056
Node: Readline Interaction345676
Node: Readline Bare Essentials346864
Node: Readline Movement Commands348650
Node: Readline Killing Commands349607
Node: Readline Arguments351525
Node: Searching352566
Node: Readline Init File354749
Node: Readline Init File Syntax356007
Node: Conditional Init Constructs379795
Node: Sample Init File383988
Node: Bindable Readline Commands387109
Node: Commands For Moving388310
Node: Commands For History390358
Node: Commands For Text395349
Node: Commands For Killing398995
Node: Numeric Arguments402025
Node: Commands For Completion403161
Node: Keyboard Macros407349
Node: Miscellaneous Commands408034
Node: Readline vi Mode414069
Node: Programmable Completion414973
Node: Programmable Completion Builtins422750
Node: A Programmable Completion Example433735
Node: Using History Interactively438980
Node: Bash History Facilities439661
Node: Bash History Builtins442663
Node: History Interaction447684
Node: Event Designators451301
Node: Word Designators452652
Node: Modifiers454409
Node: Installing Bash456214
Node: Basic Installation457348
Node: Compilers and Options461067
Node: Compiling For Multiple Architectures461805
Node: Installation Names463494
Node: Specifying the System Type465600
Node: Sharing Defaults466314
Node: Operation Controls466984
Node: Optional Features467939
Node: Reporting Bugs479155
Node: Major Differences From The Bourne Shell480486
Node: GNU Free Documentation License497332
Node: Indexes522506
Node: Builtin Index522957
Node: Reserved Word Index529781
Node: Variable Index532226
Node: Function Index549211
Node: Concept Index562992
Node: Arithmetic Expansion99936
Node: Process Substitution100901
Node: Word Splitting102018
Node: Filename Expansion104063
Node: Pattern Matching106993
Node: Quote Removal111992
Node: Redirections112284
Node: Executing Commands121974
Node: Simple Command Expansion122641
Node: Command Search and Execution124748
Node: Command Execution Environment127132
Node: Environment130164
Node: Exit Status131824
Node: Signals133605
Node: Shell Scripts137051
Node: Shell Builtin Commands140075
Node: Bourne Shell Builtins142110
Node: Bash Builtins164441
Node: Modifying Shell Behavior196437
Node: The Set Builtin196779
Node: The Shopt Builtin207374
Node: Special Builtins223283
Node: Shell Variables224259
Node: Bourne Shell Variables224693
Node: Bash Variables226794
Node: Bash Features260856
Node: Invoking Bash261866
Node: Bash Startup Files267876
Node: Interactive Shells273004
Node: What is an Interactive Shell?273412
Node: Is this Shell Interactive?274058
Node: Interactive Shell Behavior274870
Node: Bash Conditional Expressions278496
Node: Shell Arithmetic283135
Node: Aliases286093
Node: Arrays288984
Node: The Directory Stack295544
Node: Directory Stack Builtins296325
Node: Controlling the Prompt300582
Node: The Restricted Shell303544
Node: Bash POSIX Mode306151
Node: Shell Compatibility Mode321941
Node: Job Control330182
Node: Job Control Basics330639
Node: Job Control Builtins335638
Node: Job Control Variables341430
Node: Command Line Editing342583
Node: Introduction and Notation344251
Node: Readline Interaction345871
Node: Readline Bare Essentials347059
Node: Readline Movement Commands348845
Node: Readline Killing Commands349802
Node: Readline Arguments351720
Node: Searching352761
Node: Readline Init File354944
Node: Readline Init File Syntax356202
Node: Conditional Init Constructs379990
Node: Sample Init File384183
Node: Bindable Readline Commands387304
Node: Commands For Moving388505
Node: Commands For History390553
Node: Commands For Text395544
Node: Commands For Killing399190
Node: Numeric Arguments402220
Node: Commands For Completion403356
Node: Keyboard Macros407544
Node: Miscellaneous Commands408229
Node: Readline vi Mode414264
Node: Programmable Completion415168
Node: Programmable Completion Builtins422945
Node: A Programmable Completion Example433930
Node: Using History Interactively439175
Node: Bash History Facilities439856
Node: Bash History Builtins442858
Node: History Interaction447879
Node: Event Designators451496
Node: Word Designators452847
Node: Modifiers454604
Node: Installing Bash456409
Node: Basic Installation457543
Node: Compilers and Options461262
Node: Compiling For Multiple Architectures462000
Node: Installation Names463689
Node: Specifying the System Type465795
Node: Sharing Defaults466509
Node: Operation Controls467179
Node: Optional Features468134
Node: Reporting Bugs479350
Node: Major Differences From The Bourne Shell480681
Node: GNU Free Documentation License497527
Node: Indexes522701
Node: Builtin Index523152
Node: Reserved Word Index530250
Node: Variable Index532695
Node: Function Index549680
Node: Concept Index563461

End Tag Table
doc/bash.pdf
BIN
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doc/bash.ps
+6869 -6813
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doc/bashref.bt
+4 -2
View File
@@ -7,6 +7,7 @@
\entry{exec}{51}{\code {exec}}
\entry{exit}{51}{\code {exit}}
\entry{export}{51}{\code {export}}
\entry{false}{51}{\code {false}}
\entry{getopts}{51}{\code {getopts}}
\entry{hash}{52}{\code {hash}}
\entry{pwd}{52}{\code {pwd}}
@@ -17,20 +18,21 @@
\entry{[}{53}{\code {[}}
\entry{times}{55}{\code {times}}
\entry{trap}{55}{\code {trap}}
\entry{true}{56}{\code {true}}
\entry{umask}{56}{\code {umask}}
\entry{unset}{56}{\code {unset}}
\entry{alias}{57}{\code {alias}}
\entry{bind}{57}{\code {bind}}
\entry{builtin}{58}{\code {builtin}}
\entry{caller}{58}{\code {caller}}
\entry{command}{58}{\code {command}}
\entry{command}{59}{\code {command}}
\entry{declare}{59}{\code {declare}}
\entry{echo}{60}{\code {echo}}
\entry{enable}{61}{\code {enable}}
\entry{help}{62}{\code {help}}
\entry{let}{62}{\code {let}}
\entry{local}{62}{\code {local}}
\entry{logout}{62}{\code {logout}}
\entry{logout}{63}{\code {logout}}
\entry{mapfile}{63}{\code {mapfile}}
\entry{printf}{63}{\code {printf}}
\entry{read}{64}{\code {read}}
doc/bashref.bts
+4 -2
View File
@@ -14,7 +14,7 @@
\initial {C}
\entry{\code {caller}}{58}
\entry{\code {cd}}{50}
\entry{\code {command}}{58}
\entry{\code {command}}{59}
\entry{\code {compgen}}{150}
\entry{\code {complete}}{150}
\entry{\code {compopt}}{153}
@@ -31,6 +31,7 @@
\entry{\code {exit}}{51}
\entry{\code {export}}{51}
\initial {F}
\entry{\code {false}}{51}
\entry{\code {fc}}{157}
\entry{\code {fg}}{118}
\initial {G}
@@ -46,7 +47,7 @@
\initial {L}
\entry{\code {let}}{62}
\entry{\code {local}}{62}
\entry{\code {logout}}{62}
\entry{\code {logout}}{63}
\initial {M}
\entry{\code {mapfile}}{63}
\initial {P}
@@ -69,6 +70,7 @@
\entry{\code {test}}{53}
\entry{\code {times}}{55}
\entry{\code {trap}}{55}
\entry{\code {true}}{56}
\entry{\code {type}}{66}
\entry{\code {typeset}}{67}
\initial {U}
doc/bashref.html
+28 -8
View File
@@ -3059,7 +3059,7 @@ enclosed as follows:
<pre class="example">`<var>command</var>`.
</pre></div>
<p>Bash performs the expansion by executing <var>command</var> in a subshell
<p>Bash performs command substitution by executing <var>command</var> in a subshell
environment and replacing the command substitution with the standard
output of the command, with any trailing newlines deleted.
Embedded newlines are not deleted, but they may be removed during
@@ -3078,16 +3078,13 @@ the parentheses make up the command; none are treated specially.
<p>There is an alternate form of command substitution:
</p>
<div class="example">
<pre class="example">${<var>C</var> <var>command</var>; }
<pre class="example">${<var>c</var> <var>command</var>; }
</pre></div>
<p>which executes <var>command</var> in the current execution environment.
This means that side effects of <var>command</var> take effect immediately
in the current execution environment and persist in the current
environment after the command completes (e.g., the <code>exit</code> builtin
will exit the shell).
<p>which executes <var>command</var> in the current execution environment
and captures its output, again with trailing newlines removed.
</p>
<p>The character <var>C</var> following the open brace must be a space, tab,
<p>The character <var>c</var> following the open brace must be a space, tab,
newline, &lsquo;<samp>(</samp>&rsquo;, or &lsquo;<samp>|</samp>&rsquo;, and the close brace must be in a position
where a reserved word may appear (i.e., preceded by a command terminator
such as semicolon).
@@ -3095,6 +3092,11 @@ Bash allows the close brace to be joined to the remaining characters in
the word without being followed by a shell metacharacter as a reserved
word would usually require.
</p>
<p>Any side effects of <var>command</var> take effect immediately
in the current execution environment and persist in the current
environment after the command completes (e.g., the <code>exit</code> builtin
will exit the shell).
</p>
<p>This type of command substitution superficially resembles executing an
unnamed shell function: local variables are created as when a shell
function is executing, and the <code>return</code> builtin forces
@@ -4527,6 +4529,14 @@ the names is not a valid shell variable name, or <samp>-f</samp> is supplied
with a name that is not a shell function.
</p>
</dd>
<dt id='index-false'><span><code>false</code><a href='#index-false' class='copiable-anchor'> &para;</a></span></dt>
<dd><div class="example">
<pre class="example">false
</pre></div>
<p>Does nothing, returns a non-zero status.
</p>
</dd>
<dt id='index-getopts'><span><code>getopts</code><a href='#index-getopts' class='copiable-anchor'> &para;</a></span></dt>
<dd><div class="example">
<pre class="example">getopts <var>optstring</var> <var>name</var> [<var>arg</var> &hellip;]
@@ -4889,6 +4899,14 @@ values in a subshell or subshell environment when one is created.
valid signal.
</p>
</dd>
<dt id='index-true'><span><code>true</code><a href='#index-true' class='copiable-anchor'> &para;</a></span></dt>
<dd><div class="example">
<pre class="example">true
</pre></div>
<p>Does nothing, returns a 0 status.
</p>
</dd>
<dt id='index-umask'><span><code>umask</code><a href='#index-umask' class='copiable-anchor'> &para;</a></span></dt>
<dd><div class="example">
<pre class="example">umask [-p] [-S] [<var>mode</var>]
@@ -15186,6 +15204,7 @@ Next: <a href="#Reserved-Word-Index" accesskey="n" rel="next">Index of Shell Res
<tr><td></td><td valign="top"><a href="#index-export"><code>export</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Bourne-Shell-Builtins">Bourne Shell Builtins</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th id="Builtin-Index_bt_letter-F">F</th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="#index-false"><code>false</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Bourne-Shell-Builtins">Bourne Shell Builtins</a></td></tr>
<tr><td></td><td valign="top"><a href="#index-fc"><code>fc</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Bash-History-Builtins">Bash History Builtins</a></td></tr>
<tr><td></td><td valign="top"><a href="#index-fg"><code>fg</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Job-Control-Builtins">Job Control Builtins</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
@@ -15234,6 +15253,7 @@ Next: <a href="#Reserved-Word-Index" accesskey="n" rel="next">Index of Shell Res
<tr><td></td><td valign="top"><a href="#index-test"><code>test</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Bourne-Shell-Builtins">Bourne Shell Builtins</a></td></tr>
<tr><td></td><td valign="top"><a href="#index-times"><code>times</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Bourne-Shell-Builtins">Bourne Shell Builtins</a></td></tr>
<tr><td></td><td valign="top"><a href="#index-trap"><code>trap</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Bourne-Shell-Builtins">Bourne Shell Builtins</a></td></tr>
<tr><td></td><td valign="top"><a href="#index-true"><code>true</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Bourne-Shell-Builtins">Bourne Shell Builtins</a></td></tr>
<tr><td></td><td valign="top"><a href="#index-type"><code>type</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Bash-Builtins">Bash Builtins</a></td></tr>
<tr><td></td><td valign="top"><a href="#index-typeset"><code>typeset</code></a>:</td><td>&nbsp;</td><td valign="top"><a href="#Bash-Builtins">Bash Builtins</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
doc/bashref.info
+129 -113
View File
@@ -2246,7 +2246,7 @@ command is enclosed as follows:
or (deprecated)
`COMMAND`.
Bash performs the expansion by executing COMMAND in a subshell
Bash performs command substitution by executing COMMAND in a subshell
environment and replacing the command substitution with the standard
output of the command, with any trailing newlines deleted. Embedded
newlines are not deleted, but they may be removed during word splitting.
@@ -2263,10 +2263,8 @@ the parentheses make up the command; none are treated specially.
${C COMMAND; }
which executes COMMAND in the current execution environment. This means
that side effects of COMMAND take effect immediately in the current
execution environment and persist in the current environment after the
command completes (e.g., the 'exit' builtin will exit the shell).
which executes COMMAND in the current execution environment and captures
its output, again with trailing newlines removed.
The character C following the open brace must be a space, tab,
newline, '(', or '|', and the close brace must be in a position where a
@@ -2275,6 +2273,10 @@ semicolon). Bash allows the close brace to be joined to the remaining
characters in the word without being followed by a shell metacharacter
as a reserved word would usually require.
Any side effects of COMMAND take effect immediately in the current
execution environment and persist in the current environment after the
command completes (e.g., the 'exit' builtin will exit the shell).
This type of command substitution superficially resembles executing
an unnamed shell function: local variables are created as when a shell
function is executing, and the 'return' builtin forces COMMAND to
@@ -3403,6 +3405,11 @@ standard.
of the names is not a valid shell variable name, or '-f' is
supplied with a name that is not a shell function.
'false'
false
Does nothing, returns a non-zero status.
'getopts'
getopts OPTSTRING NAME [ARG ...]
@@ -3683,6 +3690,11 @@ standard.
The return status is zero unless a SIGSPEC does not specify a valid
signal.
'true'
true
Does nothing, returns a 0 status.
'umask'
umask [-p] [-S] [MODE]
@@ -11994,7 +12006,7 @@ D.1 Index of Shell Builtin Commands
* :: Bourne Shell Builtins.
(line 11)
* [: Bourne Shell Builtins.
(line 275)
(line 280)
* alias: Bash Builtins. (line 11)
* bg: Job Control Builtins.
(line 7)
@@ -12029,14 +12041,16 @@ D.1 Index of Shell Builtin Commands
(line 125)
* export: Bourne Shell Builtins.
(line 132)
* false: Bourne Shell Builtins.
(line 148)
* fc: Bash History Builtins.
(line 10)
* fg: Job Control Builtins.
(line 17)
* getopts: Bourne Shell Builtins.
(line 148)
(line 153)
* hash: Bourne Shell Builtins.
(line 192)
(line 197)
* help: Bash Builtins. (line 342)
* history: Bash History Builtins.
(line 46)
@@ -12054,34 +12068,36 @@ D.1 Index of Shell Builtin Commands
* pushd: Directory Stack Builtins.
(line 69)
* pwd: Bourne Shell Builtins.
(line 212)
(line 217)
* read: Bash Builtins. (line 504)
* readarray: Bash Builtins. (line 601)
* readonly: Bourne Shell Builtins.
(line 222)
(line 227)
* return: Bourne Shell Builtins.
(line 241)
(line 246)
* set: The Set Builtin. (line 11)
* shift: Bourne Shell Builtins.
(line 262)
(line 267)
* shopt: The Shopt Builtin. (line 9)
* source: Bash Builtins. (line 610)
* suspend: Job Control Builtins.
(line 116)
* test: Bourne Shell Builtins.
(line 275)
(line 280)
* times: Bourne Shell Builtins.
(line 360)
(line 365)
* trap: Bourne Shell Builtins.
(line 366)
(line 371)
* true: Bourne Shell Builtins.
(line 433)
* type: Bash Builtins. (line 615)
* typeset: Bash Builtins. (line 653)
* ulimit: Bash Builtins. (line 659)
* umask: Bourne Shell Builtins.
(line 428)
(line 438)
* unalias: Bash Builtins. (line 765)
* unset: Bourne Shell Builtins.
(line 446)
(line 456)
* wait: Job Control Builtins.
(line 76)
@@ -12790,102 +12806,102 @@ Node: Brace Expansion72638
Node: Tilde Expansion75372
Node: Shell Parameter Expansion77993
Node: Command Substitution96395
Node: Arithmetic Expansion99987
Node: Process Substitution100955
Node: Word Splitting102075
Node: Filename Expansion104123
Node: Pattern Matching107056
Node: Quote Removal112058
Node: Redirections112353
Node: Executing Commands122046
Node: Simple Command Expansion122716
Node: Command Search and Execution124826
Node: Command Execution Environment127213
Node: Environment130248
Node: Exit Status131911
Node: Signals133695
Node: Shell Scripts137144
Node: Shell Builtin Commands140171
Node: Bourne Shell Builtins142209
Node: Bash Builtins164408
Node: Modifying Shell Behavior196407
Node: The Set Builtin196752
Node: The Shopt Builtin207350
Node: Special Builtins223262
Node: Shell Variables224241
Node: Bourne Shell Variables224678
Node: Bash Variables226782
Node: Bash Features260847
Node: Invoking Bash261860
Node: Bash Startup Files267873
Node: Interactive Shells273004
Node: What is an Interactive Shell?273415
Node: Is this Shell Interactive?274064
Node: Interactive Shell Behavior274879
Node: Bash Conditional Expressions278508
Node: Shell Arithmetic283150
Node: Aliases286111
Node: Arrays289005
Node: The Directory Stack295568
Node: Directory Stack Builtins296352
Node: Controlling the Prompt300612
Node: The Restricted Shell303577
Node: Bash POSIX Mode306187
Node: Shell Compatibility Mode321980
Node: Job Control330224
Node: Job Control Basics330684
Node: Job Control Builtins335686
Node: Job Control Variables341481
Node: Command Line Editing342637
Node: Introduction and Notation344308
Node: Readline Interaction345931
Node: Readline Bare Essentials347122
Node: Readline Movement Commands348911
Node: Readline Killing Commands349871
Node: Readline Arguments351792
Node: Searching352836
Node: Readline Init File355022
Node: Readline Init File Syntax356283
Node: Conditional Init Constructs380074
Node: Sample Init File384270
Node: Bindable Readline Commands387394
Node: Commands For Moving388598
Node: Commands For History390649
Node: Commands For Text395643
Node: Commands For Killing399292
Node: Numeric Arguments402325
Node: Commands For Completion403464
Node: Keyboard Macros407655
Node: Miscellaneous Commands408343
Node: Readline vi Mode414381
Node: Programmable Completion415288
Node: Programmable Completion Builtins423068
Node: A Programmable Completion Example434056
Node: Using History Interactively439304
Node: Bash History Facilities439988
Node: Bash History Builtins442993
Node: History Interaction448017
Node: Event Designators451637
Node: Word Designators452991
Node: Modifiers454751
Node: Installing Bash456559
Node: Basic Installation457696
Node: Compilers and Options461418
Node: Compiling For Multiple Architectures462159
Node: Installation Names463851
Node: Specifying the System Type465960
Node: Sharing Defaults466677
Node: Operation Controls467350
Node: Optional Features468308
Node: Reporting Bugs479527
Node: Major Differences From The Bourne Shell480861
Node: GNU Free Documentation License497710
Node: Indexes522887
Node: Builtin Index523341
Node: Reserved Word Index530168
Node: Variable Index532616
Node: Function Index549604
Node: Concept Index563388
Node: Arithmetic Expansion100047
Node: Process Substitution101015
Node: Word Splitting102135
Node: Filename Expansion104183
Node: Pattern Matching107116
Node: Quote Removal112118
Node: Redirections112413
Node: Executing Commands122106
Node: Simple Command Expansion122776
Node: Command Search and Execution124886
Node: Command Execution Environment127273
Node: Environment130308
Node: Exit Status131971
Node: Signals133755
Node: Shell Scripts137204
Node: Shell Builtin Commands140231
Node: Bourne Shell Builtins142269
Node: Bash Builtins164603
Node: Modifying Shell Behavior196602
Node: The Set Builtin196947
Node: The Shopt Builtin207545
Node: Special Builtins223457
Node: Shell Variables224436
Node: Bourne Shell Variables224873
Node: Bash Variables226977
Node: Bash Features261042
Node: Invoking Bash262055
Node: Bash Startup Files268068
Node: Interactive Shells273199
Node: What is an Interactive Shell?273610
Node: Is this Shell Interactive?274259
Node: Interactive Shell Behavior275074
Node: Bash Conditional Expressions278703
Node: Shell Arithmetic283345
Node: Aliases286306
Node: Arrays289200
Node: The Directory Stack295763
Node: Directory Stack Builtins296547
Node: Controlling the Prompt300807
Node: The Restricted Shell303772
Node: Bash POSIX Mode306382
Node: Shell Compatibility Mode322175
Node: Job Control330419
Node: Job Control Basics330879
Node: Job Control Builtins335881
Node: Job Control Variables341676
Node: Command Line Editing342832
Node: Introduction and Notation344503
Node: Readline Interaction346126
Node: Readline Bare Essentials347317
Node: Readline Movement Commands349106
Node: Readline Killing Commands350066
Node: Readline Arguments351987
Node: Searching353031
Node: Readline Init File355217
Node: Readline Init File Syntax356478
Node: Conditional Init Constructs380269
Node: Sample Init File384465
Node: Bindable Readline Commands387589
Node: Commands For Moving388793
Node: Commands For History390844
Node: Commands For Text395838
Node: Commands For Killing399487
Node: Numeric Arguments402520
Node: Commands For Completion403659
Node: Keyboard Macros407850
Node: Miscellaneous Commands408538
Node: Readline vi Mode414576
Node: Programmable Completion415483
Node: Programmable Completion Builtins423263
Node: A Programmable Completion Example434251
Node: Using History Interactively439499
Node: Bash History Facilities440183
Node: Bash History Builtins443188
Node: History Interaction448212
Node: Event Designators451832
Node: Word Designators453186
Node: Modifiers454946
Node: Installing Bash456754
Node: Basic Installation457891
Node: Compilers and Options461613
Node: Compiling For Multiple Architectures462354
Node: Installation Names464046
Node: Specifying the System Type466155
Node: Sharing Defaults466872
Node: Operation Controls467545
Node: Optional Features468503
Node: Reporting Bugs479722
Node: Major Differences From The Bourne Shell481056
Node: GNU Free Documentation License497905
Node: Indexes523082
Node: Builtin Index523536
Node: Reserved Word Index530637
Node: Variable Index533085
Node: Function Index550073
Node: Concept Index563857

End Tag Table
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[131]
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@@ -309,10 +312,10 @@ gnored[]
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(/usr/local/src/bash/bash-20230515/lib/readline/doc/hsuser.texi Chapter 9
[155] [156] [157] [158] [159] [160]) Chapter 10 [161] [162] [163] [164]
[165]
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extrm '[], `@texttt strict-posix-default[]@textrm '[], and
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[175] [176] Appendix C [177]
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@@ -2640,7 +2640,7 @@ or (deprecated)
@end example
@noindent
Bash performs the expansion by executing @var{command} in a subshell
Bash performs command substitution by executing @var{command} in a subshell
environment and replacing the command substitution with the standard
output of the command, with any trailing newlines deleted.
Embedded newlines are not deleted, but they may be removed during
@@ -2659,17 +2659,14 @@ the parentheses make up the command; none are treated specially.
There is an alternate form of command substitution:
@example
$@{@var{C} @var{command}; @}
$@{@var{c} @var{command}; @}
@end example
@noindent
which executes @var{command} in the current execution environment.
This means that side effects of @var{command} take effect immediately
in the current execution environment and persist in the current
environment after the command completes (e.g., the @code{exit} builtin
will exit the shell).
which executes @var{command} in the current execution environment
and captures its output, again with trailing newlines removed.
The character @var{C} following the open brace must be a space, tab,
The character @var{c} following the open brace must be a space, tab,
newline, @samp{(}, or @samp{|}, and the close brace must be in a position
where a reserved word may appear (i.e., preceded by a command terminator
such as semicolon).
@@ -2677,6 +2674,11 @@ Bash allows the close brace to be joined to the remaining characters in
the word without being followed by a shell metacharacter as a reserved
word would usually require.
Any side effects of @var{command} take effect immediately
in the current execution environment and persist in the current
environment after the command completes (e.g., the @code{exit} builtin
will exit the shell).
This type of command substitution superficially resembles executing an
unnamed shell function: local variables are created as when a shell
function is executing, and the @code{return} builtin forces
@@ -4012,6 +4014,14 @@ The return status is zero unless an invalid option is supplied, one of
the names is not a valid shell variable name, or @option{-f} is supplied
with a name that is not a shell function.
@item false
@btindex false
@example
false
@end example
Does nothing, returns a non-zero status.
@item getopts
@btindex getopts
@example
@@ -4371,6 +4381,14 @@ values in a subshell or subshell environment when one is created.
The return status is zero unless a @var{sigspec} does not specify a
valid signal.
@item true
@btindex true
@example
true
@end example
Does nothing, returns a 0 status.
@item umask
@btindex umask
@example
execute_cmd.c
+2 -1
View File
@@ -3671,7 +3671,6 @@ execute_while_or_until (WHILE_COM *while_command, int type)
while (1)
{
return_value = execute_command (while_command->test);
REAP ();
/* Need to handle `break' in the test when we would break out of the
loop. The job control code will set `breaking' to loop_level
@@ -3700,6 +3699,8 @@ execute_while_or_until (WHILE_COM *while_command, int type)
body_status = execute_command (while_command->action);
QUIT;
REAP ();
if (breaking)
{
breaking--;
jobs.c
+15 -3
View File
@@ -3267,8 +3267,17 @@ return_job:
/* Make sure there is a background job to wait for */
BLOCK_CHILD (set, oset);
for (i = 0; i < js.j_jobslots; i++)
if (jobs[i] && RUNNING (i) && IS_FOREGROUND (i) == 0)
break;
{
if (jobs[i] && RUNNING (i) && IS_FOREGROUND (i) == 0)
break;
/* It's possible for there to be a dead job that was reaped when
SIGCHLD was unblocked before this loop started. */
else if ((flags & JWAIT_WAITING) && jobs[i] && IS_WAITING (i) == 0)
continue;
else if (jobs[i] && DEADJOB (i) && IS_NOTIFIED (i) == 0 && IS_FOREGROUND (i) == 0)
goto return_job;
}
if (i == js.j_jobslots)
{
UNBLOCK_CHILD (oset);
@@ -4271,6 +4280,7 @@ notify_of_job_status (void)
fprintf (stderr, "\n");
}
jobs[job]->flags |= J_NOTIFIED;
}
else if (job_control) /* XXX job control test added */
{
@@ -4282,6 +4292,8 @@ notify_of_job_status (void)
_("(wd now: %s)\n"), polite_directory_format (dir));
}
/* The code above and pretty_print_job take care of setting
J_NOTIFIED as appropriate, but this is here for posterity. */
jobs[job]->flags |= J_NOTIFIED;
break;
@@ -4745,7 +4757,7 @@ mark_all_jobs_as_dead (void)
BLOCK_CHILD (set, oset);
/* XXX could use js.j_firstj here */
for (i = 0; i < js.j_jobslots; i++)
for (i = js.j_ndead = 0; i < js.j_jobslots; i++)
if (jobs[i])
{
jobs[i]->state = JDEAD;
lib/glob/smatch.c
+5 -5
View File
@@ -139,7 +139,7 @@ rangecmp (int c1, int c2, int forcecoll)
#if defined (HAVE_STRCOLL)
/* Returns 1 if chars C and EQUIV collate equally in the current locale. */
static int
collequiv (int c, int equiv)
collseqcmp (int c, int equiv)
{
if (charcmp (c, equiv, 1) == 0)
return 1;
@@ -152,7 +152,7 @@ collequiv (int c, int equiv)
}
#else
# define collequiv(c, equiv) ((c) == (equiv))
# define collseqcmp(c, equiv) ((c) == (equiv))
#endif
#define _COLLSYM _collsym
@@ -321,7 +321,7 @@ is_cclass (int c, const char *name)
#define STRLEN(S) strlen(S)
#define STRCMP(S1, S2) strcmp((S1), (S2))
#define RANGECMP(C1, C2, F) rangecmp((C1), (C2), (F))
#define COLLEQUIV(C1, C2) collequiv((C1), (C2))
#define COLLEQUIV(C1, C2) collseqcmp((C1), (C2))
#define CTYPE_T enum char_class
#define IS_CCLASS(C, S) is_cclass((C), (S))
#include "sm_loop.c"
@@ -407,7 +407,7 @@ rangecmp_wc (wint_t c1, wint_t c2, int forcecoll)
/* Returns 1 if wide chars C and EQUIV collate equally in the current locale. */
static int
collequiv_wc (wint_t c, wint_t equiv)
collseqcmp_wc (wint_t c, wint_t equiv)
{
wchar_t s, p;
@@ -566,7 +566,7 @@ posix_cclass_only (char *pattern)
#define STRLEN(S) wcslen(S)
#define STRCMP(S1, S2) wcscmp((S1), (S2))
#define RANGECMP(C1, C2, F) rangecmp_wc((C1), (C2), (F))
#define COLLEQUIV(C1, C2) collequiv_wc((C1), (C2))
#define COLLEQUIV(C1, C2) collseqcmp_wc((C1), (C2))
#define CTYPE_T enum char_class
#define IS_CCLASS(C, S) is_wcclass((C), (S))
#include "sm_loop.c"
lib/intl/gettextP.h
+9
View File
@@ -164,11 +164,20 @@ extern int _nl_msg_cat_cntr;
const char *_nl_locale_name (int category, const char *categoryname);
#endif
#ifdef __MVS__
# undef __locale
#endif
struct loaded_l10nfile *_nl_find_domain (const char *__dirname,
char *__locale,
const char *__domainname,
struct binding *__domainbinding);
internal_function;
#ifdef __MVS__
# define __locale 1
#endif
void _nl_load_domain (struct loaded_l10nfile *__domain,
struct binding *__domainbinding);
internal_function;
parse.y
+1 -1
View File
@@ -83,7 +83,7 @@ typedef void *alias_t;
#endif /* ALIAS */
#if defined (PROMPT_STRING_DECODE)
# ifndef _MINIX
# if !defined (_MINIX) || !defined (__MVS__)
# include <sys/param.h>
# endif
# include "posixtime.h"
shell.c
+2 -2
View File
@@ -373,11 +373,11 @@ main (int argc, char **argv, char **env)
#endif
volatile int locally_skip_execution;
volatile int arg_index, top_level_arg_index;
#ifdef __OPENNT
#if defined (__OPENNT) || defined (__MVS__)
char **env;
env = environ;
#endif /* __OPENNT */
#endif /* __OPENNT || __MVS__ */
USE_VAR(argc);
USE_VAR(argv);
subst.c
+65 -17
View File
@@ -4611,11 +4611,8 @@ quote_escapes_internal (const char *string, int flags)
quote_spaces = (ifs_value && *ifs_value == 0);
nosplit = (flags & PF_NOSPLIT2);
for (skip_ctlesc = skip_ctlnul = 0, s = ifs_value; s && *s; s++)
{
skip_ctlesc |= (nosplit == 0 && *s == CTLESC);
skip_ctlnul |= (nosplit == 0 && *s == CTLNUL);
}
skip_ctlesc = nosplit == 0 && ifs_cmap[CTLESC];
skip_ctlnul = nosplit == 0 && ifs_cmap[CTLNUL];
t = result = (char *)xmalloc ((slen * 2) + 1);
s = string;
@@ -6602,6 +6599,29 @@ process_substitute (char *string, int open_for_read_in_child)
#define COMSUB_PIPEBUF 4096
static inline int
comsub_shouldquote (int c, int quoted, int flags, int skip_ctlesc, int skip_ctlnul)
{
/* This is essentially quote_string inline */
if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))
return 1;
else if ((flags & PF_ASSIGNRHS) && skip_ctlesc && c == CTLESC)
return 1;
else if ((flags & PF_ASSIGNRHS) && skip_ctlnul && c == CTLNUL)
return 1;
/* Escape CTLESC and CTLNUL in the output to protect those characters
from the rest of the word expansions (word splitting and globbing.)
This is essentially quote_escapes inline. */
else if (skip_ctlesc == 0 && c == CTLESC)
return 1;
else if (skip_ctlnul == 0 && c == CTLNUL)
return 1;
else if (c == ' ' && ifs_value && *ifs_value == 0)
return 1;
else
return 0;
}
static char *
optimize_cat_file (REDIRECT *r, int quoted, int flags, int *flagp)
{
@@ -6672,17 +6692,7 @@ read_comsub (int fd, int quoted, int flags, int *rflag)
/* Add the character to ISTRING, possibly after resizing it. */
RESIZE_MALLOCED_BUFFER (istring, istring_index, locale_mb_cur_max+1, istring_size, 512);
/* This is essentially quote_string inline */
if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) /* || c == CTLESC || c == CTLNUL */)
istring[istring_index++] = CTLESC;
else if ((flags & PF_ASSIGNRHS) && skip_ctlesc && c == CTLESC)
istring[istring_index++] = CTLESC;
/* Escape CTLESC and CTLNUL in the output to protect those characters
from the rest of the word expansions (word splitting and globbing.)
This is essentially quote_escapes inline. */
else if (skip_ctlesc == 0 && c == CTLESC)
istring[istring_index++] = CTLESC;
else if ((skip_ctlnul == 0 && c == CTLNUL) || (c == ' ' && (ifs_value && *ifs_value == 0)))
if (comsub_shouldquote (c, quoted, flags, skip_ctlesc, skip_ctlnul))
istring[istring_index++] = CTLESC;
#if defined (HANDLE_MULTIBYTE)
@@ -6751,7 +6761,10 @@ read_comsub (int fd, int quoted, int flags, int *rflag)
static void
uw_pop_var_context (void *ignore)
{
variable_context--;
pop_var_context ();
sv_ifs ("IFS"); /* XXX here for now */
}
#if defined (ARRAY_VARS)
@@ -6809,6 +6822,41 @@ uw_restore_errexit (void *eflag)
change_flag ('e', (intptr_t) eflag ? FLAG_ON : FLAG_OFF);
set_shellopts ();
}
/* Quote the output of nofork varsub command substitution in the way that the
caller of function_substitute expects. The caller guarantees that STRING
is non-null. This is equivalent to what read_comsub does to the output it
reads. The return value will be post-processed to turn "" into CTLNUL if
necessary. */
static char *
comsub_quote_string (char *string, int quoted, int flags)
{
int skip_ctlesc, skip_ctlnul;
size_t ind, slen;
const char *send;
int i, c;
char *ret;
DECLARE_MBSTATE;
slen = strlen (string);
send = string + slen;
ret = (char *)xmalloc ((2 * slen) + 1);
skip_ctlesc = ifs_cmap[CTLESC];
skip_ctlnul = ifs_cmap[CTLNUL];
for (i = 0, ind = 0; c = string[i]; )
{
if (comsub_shouldquote (c, quoted, flags, skip_ctlesc, skip_ctlnul))
ret[ind++] = CTLESC;
COPY_CHAR_I (ret, ind, string, send, i);
}
ret[ind] = '\0';
return ret;
}
static SHELL_VAR lambdafunc = { ".bash.lambda", 0, 0, 0, 0, 0, 0 };
@@ -6980,7 +7028,7 @@ function_substitute (char *string, int quoted, int flags)
else
{
s = get_string_value ("REPLY");
istring = s ? savestring (s) : savestring ("");
istring = s ? comsub_quote_string (s, quoted, flags) : savestring ("");
}
run_unwind_frame ("nofork comsub"); /* restores stdout, job control stuff */
support/signames.c
+23
View File
@@ -298,6 +298,29 @@ initialize_signames (void)
signal_names[SIGTHR] = "SIGTHR";
#endif
/* z/OS */
#if defined(SIGABND)
signal_names[SIGABND] = "SIGABND";
#endif
#if defined(SIGIOERR)
signal_names[SIGIOERR] = "SIGIOERR";
#endif
#if defined(SIGTHSTOP)
signal_names[SIGTHSTOP] = "SIGTHSTOP";
#endif
#if defined(SIGTHCONT)
signal_names[SIGTHCONT] = "SIGTHCONT";
#endif
#if defined(SIGTRACE)
signal_names[SIGTRACE] = "SIGTRACE";
#endif
#if defined(SIGDCE)
signal_names[SIGDCE] = "SIGDCE";
#endif
#if defined(SIGDUMP)
signal_names[SIGDUMP] = "SIGDUMP";
#endif
/* Common */
#if defined (SIGHUP) /* hangup */
signal_names[SIGHUP] = "SIGHUP";
tests/comsub2.right
+97 -3
View File
@@ -8,23 +8,33 @@ outside: 42
aa bb cc dd
outside:
assignment: 12
func ()
{
echo func-inside
}
abcde
67890
12345
argv[1] = <>
argv[1] = <>
aa,bb
JOBaa bb cc ddCONTROL
./comsub2.tests: line 48: p: command not found
./comsub2.tests: line 68: p: command not found
NOTFOUND
./comsub2.tests: line 56: p: command not found
./comsub2.tests: line 56: p: command not found
./comsub2.tests: line 79: p: command not found
./comsub2.tests: line 79: p: command not found
expand_aliases off
expand_aliases off
outside:
./comsub2.tests: line 79: alias: p: not found
alias e='echo inside redefine'
expand_aliases off
1
expand_aliases on
2
expand_aliases on
outside:
./comsub2.tests: line 89: alias: p: not found
expand_aliases on
1
xx
@@ -72,3 +82,87 @@ inside: after false xxx
outside after: funsub
=====posix mode=====
outside before: value
.
declare -a a=([0]="1" [1]="2" [2]="3" [3]="4")
declare -- int="2"
after here-doc: 1
[1]- Running sleep 1 &
[2]+ Running sleep 1 &
[1]- Running sleep 1 &
[2]+ Running sleep 1 &
17772 26794
17772 26794
a b c == 1 2 3
== 1 2 3
before return
after func
1 2 3a b c
2 2
foobara b c
declare -- IFS=" "
*???
*???
yyy zzzz
argv[1] = <AA^ABB>
argv[1] = <AA^OBB>
argv[1] = <AA^?BB>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <AA^ABB>
argv[1] = <AA^ABB>
argv[1] = <AA^OBB>
argv[1] = <AA^OBB>
argv[1] = <AA^?BB>
argv[1] = <AA^?BB>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^A>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <^?>
argv[1] = <AA^ABB>
argv[1] = <AA>
argv[2] = <BB>
argv[1] = <AA^ABB>
argv[1] = <AA>
argv[2] = <BB>
argv[1] = <AA^?BB>
argv[1] = <AA>
argv[2] = <BB>
argv[1] = <AA^?BB>
argv[1] = <AA>
argv[2] = <BB>
argv[1] = <AA BB>
argv[1] = <AA>
argv[2] = <BB>
argv[1] = <AA BB>
argv[1] = <AA BB>
argv[1] = <AA BB>
argv[1] = <AA>
argv[2] = <BB>
argv[1] = <AA BB>
argv[1] = <AA BB>
tests/comsub2.tests
+32 -2
View File
@@ -29,15 +29,35 @@ unset x
echo ${ printf '%s\n' aa bb cc dd; x=42 ; return 12; echo ee ff; }
echo outside: $x
unset x
echo ${ typeset x; printf '%s\n' aa bb cc dd; x=42 ; return 12; echo ee ff; }
echo ${ local x; printf '%s\n' aa bb cc dd; x=42 ; return 12; echo ee ff; }
echo outside: $x
xx=${ typeset x; printf '%s\n' aa bb cc dd; x=42 ; return 12; echo ee ff; }
xx=${ local x; printf '%s\n' aa bb cc dd; x=42 ; return 12; echo ee ff; }
echo assignment: $?
unset xx
declare -i x
y=${ :;}
declare -i z
unset -v x y z
# variables can be local, but all function declarations are global
func() { echo func-outside; }
xx=${ func() { echo func-inside; }; }
declare -f func
xx=${ unset -f func; }
declare -f func
echo ${( echo abcde )} # works in ksh93
echo ${| echo 67890; REPLY=12345; } # works in mksh
x=${| REPLY= ;}
recho "$x"
unset x
x=${| :;}
recho "$x"
unset x
echo ${ echo aa; },${ echo bb; }
# basic job control
set -m
@@ -49,17 +69,24 @@ echo NOT${ p; }FOUND
# alias handling in command substitutions, default and posix mode
alias p=printf
alias e='echo aliasval'
echo "${ typeset x;
for f in 1 2; do p '%s\n' $f ; shopt expand_aliases; done
unalias p
alias e='echo inside redefine'
x=42 ; return; echo this should not be seen; }"
echo outside: $x
alias p e
shopt expand_aliases
alias p=printf
set -o posix
echo "${ typeset x;
for f in 1 2; do p '%s\n' $f ; shopt expand_aliases; done
unalias p;
x=42 ; return; echo this should not be seen; }"
echo outside: $x
alias p
shopt expand_aliases
set +o posix
@@ -120,3 +147,6 @@ echo ${ echo $(( 24+18 )); }
# alias expansion and nested funsubs in other constructs
${THIS_SH} ./comsub21.sub
${THIS_SH} ./comsub22.sub
${THIS_SH} ./comsub23.sub
${THIS_SH} ./comsub24.sub
${THIS_SH} ./comsub25.sub
tests/comsub23.sub
+63
View File
@@ -0,0 +1,63 @@
# 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
#
# more odds and ends for nofork command substitution
# make sure parsing is right within conditional commands
[[ ${ echo -n "[${ echo -n foo; }]" ; } == '[foo]' ]] || echo bad 1
[[ "${ echo -n "[${ echo -n foo; }]" ; }" == '[foo]' ]] || echo bad 1
# mix multiple calls to parse_and_execute
got=$(eval 'x=${ for i in test; do case $i in test) echo .;; esac; done; }' ; echo $x)
echo $got
# mix compound assignment and nofork command substitution
: ${ a=(1 2 3 ${ echo 4;} ); }
declare -p a
unset a
# function execution with side effects
int=0
incr()
{
echo incr: $int
(( int++ ))
}
: ${ incr; }
: ${ incr; }
declare -p int
# expansion inside here-document body
int=0
: <<EOF
${ incr; }
EOF
echo after here-doc: $int
# jobs list in nofork command substitution
sleep 1 &
sleep 1 &
jl1=${ jobs; }
printf '%s\n' "$jl1"
jl2=${ jobs; }
printf '%s\n' "$jl2"
# nofork command substitution doesn't affect the shell's random number sequence
RANDOM=42
echo $RANDOM ${ echo $RANDOM; }
RANDOM=42
echo $RANDOM $RANDOM
tests/comsub24.sub
+77
View File
@@ -0,0 +1,77 @@
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# test function calling in nofork comsubs
set -- 1 2 3
func()
{
echo "$@"
}
x=${ func a b c; }
echo "$x" == "$@"
x=${ func; }
echo "$x" == "$@"
unset -f func
func()
{
echo before return
return 12
echo after return
}
x=${ func; echo after func; }
echo "$x"
unset -f func
unset x
set --
# more shift and order-of-expansion tests
set -- 1 2 3
echo "$*${ set -- a b c;}$*"
set -- 1 2
x=${ shift; echo "$@"; }
echo $x "$@"
# order of expansion
echo "${ IFS= ; echo foo; }${ unset IFS; echo bar;}${ IFS=' '; echo a b c;}"
declare -p IFS
IFS=$' \t\n'
: ${TMPDIR:=/tmp}
TDIR=$TMPDIR/comsub24-$$
[ -d "${TDIR}" ] || mkdir "${TDIR}"
cd "${TDIR}" || {
echo "comsub24: cannot cd to ${TDIR}"
exit 2
}
touch xx yy zz
echo "${ set -f; echo '*';}${ set +f; echo '???'; }"
echo ${ set -f; echo '*';}${ set +f; echo '???'; }
rm xx yy zz
touch xx yyy zzzz
echo ${ set -f; echo '*';}${ set +f; echo '???'; }
cd $OLDPWD
rm -rf $TDIR
tests/comsub25.sub
+138
View File
@@ -0,0 +1,138 @@
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# tests of internal quoting characters in read_comsub and comsub_quote_string
CTLESC=$'\001'
CTLNUL=$'\177'
x=${| REPLY=$'AA\001BB' ; }
recho "$x"
unset x
x=${| REPLY=$'AA\017BB' ; }
recho "$x"
unset x
x=${| REPLY=$'AA\177BB' ; }
recho "$x"
unset x
x=${| REPLY=$'\001' ; }
recho "$x"
unset x
x=${| REPLY="" ; }
recho "$x"
unset x
x=${| REPLY= ; }
recho "$x"
unset x
x=${| REPLY=$CTLESC ; }
recho "$x"
unset x
x=${| REPLY="$CTLESC" ; }
recho "$x"
unset x
x="${| REPLY="$CTLESC" ; }"
recho "$x"
unset x
x=${| REPLY=$'\177' ; }
recho "$x"
unset x
x=${| REPLY="" ; }
recho "$x"
unset x
x=${| REPLY= ; }
recho "$x"
unset x
x=${| REPLY=$CTLNUL ; }
recho "$x"
unset x
x=${| REPLY="$CTLNUL" ; }
recho "$x"
unset x
x="${| REPLY="$CTLNUL" ; }"
recho "$x"
unset x
recho "${ echo $'AA\001BB' ; }"
recho ${ echo $'AA\001BB' ; }
recho "${ echo $'AA\017BB' ; }"
recho ${ echo $'AA\017BB' ; }
recho "${ echo $'AA\177BB' ; }"
recho ${ echo $'AA\177BB' ; }
recho "${ echo $'\001' ; }"
recho ${ echo $'\001' ; }
recho "${ echo "" ; }"
recho ${ echo "" ; }
recho "${ echo  ; }"
recho ${ echo  ; }
recho "${ echo $CTLESC ; }"
recho ${ echo $CTLESC ; }
recho ${ echo "$CTLESC" ; }
recho "${ echo "$CTLESC" ; }"
recho "${ echo $'\177' ; }"
recho ${ echo $'\177' ; }
recho "${ echo "" ; }"
recho ${ echo "" ; }
recho "${ echo  ; }"
recho ${ echo  ; }
recho "${ echo $CTLNUL ; }"
recho ${ echo $CTLNUL ; }
recho "${ echo "$CTLNUL" ; }"
recho ${ echo "$CTLNUL" ; }
IFS=$CTLESC
x=${| REPLY=$'AA\001BB' ; }
recho "$x"
recho $x
unset x
recho "${ echo $'AA\001BB' ; }"
recho ${ echo $'AA\001BB' ; }
IFS=$CTLNUL
x=${| REPLY=$'AA\177BB' ; }
recho "$x"
recho $x
unset x
recho "${ echo $'AA\177BB' ; }"
recho ${ echo $'AA\177BB' ; }
unset IFS
x=${| REPLY=AA" "BB ; }
recho "$x"
recho $x
IFS=
recho "$x"
recho $x
unset x
unset IFS
recho "${ echo AA" "BB ; }"
recho ${ echo AA" "BB ; }
IFS=
recho "${ echo AA" "BB ; }"
recho ${ echo AA" "BB ; }
tests/test1.sub
+1 -1
View File
@@ -15,7 +15,7 @@
# return different results
: ${TMPDIR:=/tmp}
trap 'rm -f ${TMPDIR}/pipe' 0 1 2 3 6 15
trap 'rm -f ${TMPDIR}/pipe' EXIT HUP INT QUIT ABRT TERM
exec 6>&-
echo "t -p /dev/fd/6"
tests/trap.tests
+1 -1
View File
@@ -14,7 +14,7 @@
# test the trap code
trap 'echo exiting' 0
trap 'echo aborting' 1 2 3 6 15
trap 'echo aborting' HUP INT QUIT ABRT TERM
# make sure a user-specified subshell runs the exit trap, but does not
# inherit the exit trap from a parent shell