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Bash-5.2-rc1 release

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Chet Ramey
2022-06-17 09:54:51 -04:00
parent 187661b892
commit 6c1407d2a9
92 changed files with 14083 additions and 14216 deletions
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doc/bashref.html
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@@ -4,9 +4,9 @@
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!-- This text is a brief description of the features that are present in
the Bash shell (version 5.2, 24 February 2022).
the Bash shell (version 5.2, 3 June 2022).
This is Edition 5.2, last updated 24 February 2022,
This is Edition 5.2, last updated 3 June 2022,
of The GNU Bash Reference Manual,
for Bash, Version 5.2.
@@ -77,10 +77,10 @@ Next: <a href="#Introduction" accesskey="n" rel="next">Introduction</a>, Previou
<span id="Bash-Features-1"></span><h1 class="top">Bash Features</h1>
<p>This text is a brief description of the features that are present in
the Bash shell (version 5.2, 24 February 2022).
the Bash shell (version 5.2, 3 June 2022).
The Bash home page is <a href="http://www.gnu.org/software/bash/">http://www.gnu.org/software/bash/</a>.
</p>
<p>This is Edition 5.2, last updated 24 February 2022,
<p>This is Edition 5.2, last updated 3 June 2022,
of <cite>The GNU Bash Reference Manual</cite>,
for <code>Bash</code>, Version 5.2.
</p>
@@ -1104,7 +1104,9 @@ the time information.
<p>If the pipeline is not executed asynchronously (see <a href="#Lists">Lists of Commands</a>), the
shell waits for all commands in the pipeline to complete.
</p>
<p>Each command in a pipeline is executed in its own <em>subshell</em>, which is a
<p>Each command in a multi-command pipeline,
where pipes are created,
is executed in its own <em>subshell</em>, which is a
separate process (see <a href="#Command-Execution-Environment">Command Execution Environment</a>).
If the <code>lastpipe</code> option is enabled using the <code>shopt</code> builtin
(see <a href="#The-Shopt-Builtin">The Shopt Builtin</a>),
@@ -1652,6 +1654,11 @@ expression are saved in the remaining <code>BASH_REMATCH</code> indices.
The element of <code>BASH_REMATCH</code> with index <var>n</var> is the portion of the
string matching the <var>n</var>th parenthesized subexpression.
</p>
<p>Bash sets
<code>BASH_REMATCH</code>
in the global scope; declaring it as a local variable will lead to
unexpected results.
</p>
<p>Expressions may be combined using the following operators, listed
in decreasing order of precedence:
</p>
@@ -3307,7 +3314,9 @@ then any character not enclosed is matched. A &lsquo;<samp>-</samp>&rsquo;
may be matched by including it as the first or last character
in the set. A &lsquo;<samp>]</samp>&rsquo; may be matched by including it as the first
character in the set.
The sorting order of characters in range expressions is determined by
The sorting order of characters in range expressions,
and the characters included in the range,
are determined by
the current locale and the values of the
<code>LC_COLLATE</code> and <code>LC_ALL</code> shell variables, if set.
</p>
@@ -7987,10 +7996,12 @@ No other startup files are read.
<span id="Invoked-by-remote-shell-daemon"></span><h4 class="subsubheading">Invoked by remote shell daemon</h4>
<p>Bash attempts to determine when it is being run with its standard input
connected to a network connection, as when executed by the remote shell
daemon, usually <code>rshd</code>, or the secure shell daemon <code>sshd</code>.
If Bash determines it is being run in
this fashion, it reads and executes commands from <samp>~/.bashrc</samp>, if that
connected to a network connection, as when executed by
the historical remote shell daemon, usually <code>rshd</code>,
or the secure shell daemon <code>sshd</code>.
If Bash
determines it is being run non-interactively in this fashion,
it reads and executes commands from <samp>~/.bashrc</samp>, if that
file exists and is readable.
It will not do this if invoked as <code>sh</code>.
The <samp>--norc</samp> option may be used to inhibit this behavior, and the
@@ -9347,6 +9358,11 @@ has been set.
If Bash receives a trapped signal while executing <code>read</code>, the trap
handler executes and <code>read</code> returns an exit status greater than 128.
</li><li> The <code>printf</code> builting uses <code>double</code> (via <code>strtod</code>) to convert
arguments corresponding to floating point conversion specifiers, instead of
<code>long double</code> if it&rsquo;s available. The &lsquo;<samp>L</samp>&rsquo; length modifier forces
<code>printf</code> to use <code>long double</code> if it&rsquo;s available.
</li><li> Bash removes an exited background process&rsquo;s status from the list of such
statuses after the <code>wait</code> builtin is used to obtain it.
@@ -9860,9 +9876,17 @@ argument restricts operation to running jobs.
<p>Suspend the execution of this shell until it receives a
<code>SIGCONT</code> signal.
A login shell cannot be suspended; the <samp>-f</samp>
A login shell,
or a shell without job control enabled,
cannot be suspended; the <samp>-f</samp>
option can be used to override this and force the suspension.
</p></dd>
The return status is 0 unless the shell is a login shell
or job control is not enabled
and
<samp>-f</samp>
is not supplied.
</p>
</dd>
</dl>
<p>When job control is not active, the <code>kill</code> and <code>wait</code>