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builtins now return success if supplied --help; use groff to build HTML man pages; reset mbstate if $'...' strings read an invalid multibyte sequence; read -t 0 now looks at other options (-n/-N/-d) and sets the terminal state appropriately

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Chet Ramey
2025-10-01 10:44:10 -04:00
parent cf8a2518c8
commit fbd078be0a
35 changed files with 1666 additions and 1479 deletions
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doc/bashref.html
+12 -4
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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 5.3, 6 September 2025).
the Bash shell (version 5.3, 19 September 2025).
This is Edition 5.3, last updated 6 September 2025,
This is Edition 5.3, last updated 19 September 2025,
of The GNU Bash Reference Manual,
for Bash, Version 5.3.
@@ -77,10 +77,10 @@ Next: <a href="#Introduction" accesskey="n" rel="next">Introduction</a>, Previou
<h1 class="top" id="Bash-Features-1"><span>Bash Features<a class="copiable-link" href="#Bash-Features-1"> &para;</a></span></h1>
<p>This text is a brief description of the features that are present in
the Bash shell (version 5.3, 6 September 2025).
the Bash shell (version 5.3, 19 September 2025).
The Bash home page is <a class="url" href="http://www.gnu.org/software/bash/">http://www.gnu.org/software/bash/</a>.
</p>
<p>This is Edition 5.3, last updated 6 September 2025,
<p>This is Edition 5.3, last updated 19 September 2025,
of <cite class="cite">The GNU Bash Reference Manual</cite>,
for <code class="code">Bash</code>, Version 5.3.
</p>
@@ -4689,6 +4689,12 @@ Other builtins that accept arguments but are not specified as accepting
options interpret arguments beginning with &lsquo;<samp class="samp">-</samp>&rsquo; as invalid options and
require &lsquo;<samp class="samp">--</samp>&rsquo; to prevent this interpretation.
</p>
<p>All builtins except
<code class="code">:</code>, <code class="code">true</code>, <code class="code">false</code>, <code class="code">echo</code>, and <code class="code">test</code>/<code class="code">[</code>
accept &lsquo;<samp class="samp">--help</samp>&rsquo; as a special option.
If &lsquo;<samp class="samp">--help</samp>&rsquo; is supplied, these builtins output
a help message and exit with a status of 0.
</p>
<ul class="mini-toc">
<li><a href="#Bourne-Shell-Builtins" accesskey="1">Bourne Shell Builtins</a></li>
<li><a href="#Bash-Builtins" accesskey="2">Bash Builtin Commands</a></li>
@@ -11131,6 +11137,8 @@ This is useful only when used with the <samp class="option">-n</samp> option.
<p>Supplying the <samp class="option">-f</samp> option, when job control is enabled,
forces <code class="code">wait</code> to wait for each <var class="var">id</var> to terminate before
returning its status, instead of returning when it changes status.
If there are no <var class="var">id</var> arguments,
<code class="code">wait</code> waits until all background processes have terminated.
</p>
<p>If none of the <var class="var">id</var>s specify one of the shell&rsquo;s an active child
processes, the return status is 127.