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fix for race condition with process creation and terminal process group; changes to printf builtin for multibyte characters

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This commit is contained in:
Chet Ramey
2023-09-11 10:09:22 -04:00
parent aab2c1fb1d
commit 32826f717d
19 changed files with 9543 additions and 9559 deletions
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doc/bashref.html
+17 -7
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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, 15 August 2023).
the Bash shell (version 5.3, 31 August 2023).
This is Edition 5.3, last updated 15 August 2023,
This is Edition 5.3, last updated 31 August 2023,
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
<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 5.3, 15 August 2023).
the Bash shell (version 5.3, 31 August 2023).
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 5.3, last updated 15 August 2023,
<p>This is Edition 5.3, last updated 31 August 2023,
of <cite>The GNU Bash Reference Manual</cite>,
for <code>Bash</code>, Version 5.3.
</p>
@@ -2111,7 +2111,7 @@ When &lsquo;<samp>+=</samp>&rsquo; is applied to an array variable using compoun
(see <a href="#Arrays">Arrays</a>), the
variable&rsquo;s value is not unset (as it is when using &lsquo;<samp>=</samp>&rsquo;), and new
values are appended to the array beginning at one greater than the array&rsquo;s
maximum index (for indexed arrays), or added as additional key-value pairs
maximum index (for indexed arrays), or added as additional key-value pairs
in an associative array.
When applied to a string-valued variable, <var>value</var> is expanded and
appended to the variable&rsquo;s value.
@@ -5594,7 +5594,8 @@ formats quote the argument string using single quotes.
<dt><span><code>%Q</code></span></dt>
<dd><p>like <code>%q</code>, but applies any supplied precision to the <var>argument</var>
before quoting it.
</p></dd>
</p>
</dd>
<dt><span><code>%(<var>datefmt</var>)T</code></span></dt>
<dd><p>Causes <code>printf</code> to output the date-time string resulting from using
<var>datefmt</var> as a format string for <code>strftime</code>(3).
@@ -5619,6 +5620,7 @@ as a shell variable name.
them to convert the argument string to a wide-character string and apply
any supplied field width and precision in terms of characters, not bytes.
</p>
<p>Arguments to non-string format specifiers are treated as C language constants,
except that a leading plus or minus sign is allowed, and if the leading
character is a single or double quote, the value is the ASCII value of
@@ -8590,6 +8592,12 @@ option to the <code>set</code> builtin (see <a href="#The-Set-Builtin">The Set B
</dd>
<dt><span><code>-v <var>varname</var></code></span></dt>
<dd><p>True if the shell variable <var>varname</var> is set (has been assigned a value).
If <var>varname</var> is an indexed
array variable name subscripted by &lsquo;<samp>@</samp>&rsquo; or &lsquo;<samp>*</samp>&rsquo;,
this returns true if the array has any set elements.
If <var>varname</var> is an associative
array variable name subscripted by &lsquo;<samp>@</samp>&rsquo; or &lsquo;<samp>*</samp>&rsquo;,
this returns true if an element with that key is set.
</p>
</dd>
<dt><span><code>-R <var>varname</var></code></span></dt>
@@ -8950,7 +8958,9 @@ using the compound assignment syntax; see <a href="#Shell-Parameters">Shell Para
The braces are required to avoid
conflicts with the shell&rsquo;s filename expansion operators. If the
<var>subscript</var> is &lsquo;<samp>@</samp>&rsquo; or &lsquo;<samp>*</samp>&rsquo;, the word expands to all members
of the array <var>name</var>. These subscripts differ only when the word
of the array <var>name</var>, unless otherwise noted in the description of a
builtin or word expansion.
These subscripts differ only when the word
appears within double quotes.
If the word is double-quoted,
<code>${<var>name</var>[*]}</code> expands to a single word with