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Changes to grep/manual/html_node/Character-Classes-and-Bracket-Expressio
From: |
Jim Meyering |
Subject: |
Changes to grep/manual/html_node/Character-Classes-and-Bracket-Expressions.html, v |
Date: |
Sat, 3 Sep 2022 15:33:15 -0400 (EDT) |
CVSROOT: /webcvs/grep
Module name: grep
Changes by: Jim Meyering <meyering> 22/09/03 15:33:15
Index: html_node/Character-Classes-and-Bracket-Expressions.html
===================================================================
RCS file:
/webcvs/grep/grep/manual/html_node/Character-Classes-and-Bracket-Expressions.html,v
retrieving revision 1.32
retrieving revision 1.33
diff -u -b -r1.32 -r1.33
--- html_node/Character-Classes-and-Bracket-Expressions.html 14 Aug 2021
20:46:40 -0000 1.32
+++ html_node/Character-Classes-and-Bracket-Expressions.html 3 Sep 2022
19:33:14 -0000 1.33
@@ -5,7 +5,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!-- This manual is for grep, a pattern matching engine.
-Copyright (C) 1999-2002, 2005, 2008-2021 Free Software Foundation,
+Copyright (C) 1999-2002, 2005, 2008-2022 Free Software Foundation,
Inc.
Permission is granted to copy, distribute and/or modify this document
@@ -14,10 +14,10 @@
Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
Texts. A copy of the license is included in the section entitled
"GNU Free Documentation License". -->
-<title>Character Classes and Bracket Expressions (GNU Grep 3.7)</title>
+<title>Character Classes and Bracket Expressions (GNU Grep 3.8)</title>
-<meta name="description" content="Character Classes and Bracket Expressions
(GNU Grep 3.7)">
-<meta name="keywords" content="Character Classes and Bracket Expressions (GNU
Grep 3.7)">
+<meta name="description" content="Character Classes and Bracket Expressions
(GNU Grep 3.8)">
+<meta name="keywords" content="Character Classes and Bracket Expressions (GNU
Grep 3.8)">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
@@ -27,7 +27,7 @@
<link href="Index.html" rel="index" title="Index">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="Regular-Expressions.html" rel="up" title="Regular Expressions">
-<link href="The-Backslash-Character-and-Special-Expressions.html" rel="next"
title="The Backslash Character and Special Expressions">
+<link href="Special-Backslash-Expressions.html" rel="next" title="Special
Backslash Expressions">
<link href="Fundamental-Structure.html" rel="prev" title="Fundamental
Structure">
<style type="text/css">
<!--
@@ -57,7 +57,7 @@
<div class="section" id="Character-Classes-and-Bracket-Expressions">
<div class="header">
<p>
-Next: <a href="The-Backslash-Character-and-Special-Expressions.html"
accesskey="n" rel="next">The Backslash Character and Special Expressions</a>,
Previous: <a href="Fundamental-Structure.html" accesskey="p"
rel="prev">Fundamental Structure</a>, Up: <a href="Regular-Expressions.html"
accesskey="u" rel="up">Regular Expressions</a> [<a
href="index.html#SEC_Contents" title="Table of contents"
rel="contents">Contents</a>][<a href="Index.html" title="Index"
rel="index">Index</a>]</p>
+Next: <a href="Special-Backslash-Expressions.html" accesskey="n"
rel="next">Special Backslash Expressions</a>, Previous: <a
href="Fundamental-Structure.html" accesskey="p" rel="prev">Fundamental
Structure</a>, Up: <a href="Regular-Expressions.html" accesskey="u"
rel="up">Regular Expressions</a> [<a href="index.html#SEC_Contents"
title="Table of contents" rel="contents">Contents</a>][<a href="Index.html"
title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<span id="Character-Classes-and-Bracket-Expressions-1"></span><h3
class="section">3.2 Character Classes and Bracket Expressions</h3>
@@ -86,7 +86,7 @@
In other locales, the sorting sequence is not specified, and
‘<samp>[a-d]</samp>’ might be equivalent to
‘<samp>[abcd]</samp>’ or to
‘<samp>[aBbCcDd]</samp>’, or it might fail to match any character,
or the set of
-characters that it matches might even be erratic.
+characters that it matches might be erratic, or it might be invalid.
To obtain the traditional interpretation
of bracket expressions, you can use the ‘<samp>C</samp>’ locale by
setting the
<code>LC_ALL</code> environment variable to the value
‘<samp>C</samp>’.
@@ -188,11 +188,10 @@
part of the symbolic names, and must be included in addition to
the brackets delimiting the bracket expression.
</p>
-<span id="invalid_002dbracket_002dexpr"></span><p>If you mistakenly omit the
outer brackets, and search for say, ‘<samp>[:upper:]</samp>’,
+<p>If you mistakenly omit the outer brackets, and search for say,
‘<samp>[:upper:]</samp>’,
GNU <code>grep</code> prints a diagnostic and exits with status 2, on
-the assumption that you did not intend to search for the nominally
-equivalent regular expression: ‘<samp>[:epru]</samp>’.
-Set the <code>POSIXLY_CORRECT</code> environment variable to disable this
feature.
+the assumption that you did not intend to search for the
+regular expression ‘<samp>[:epru]</samp>’.
</p>
<p>Special characters lose their special meaning inside bracket expressions.
</p>
@@ -230,7 +229,7 @@
</dd>
<dt><span>‘<samp>-</samp>’</span></dt>
<dd><p>represents the range if it’s not first or last in a list or the
ending point
-of a range.
+of a range. To make the ‘<samp>-</samp>’ a list item, it is best
to put it last.
</p>
</dd>
<dt><span>‘<samp>^</samp>’</span></dt>
@@ -245,7 +244,7 @@
<hr>
<div class="header">
<p>
-Next: <a href="The-Backslash-Character-and-Special-Expressions.html">The
Backslash Character and Special Expressions</a>, Previous: <a
href="Fundamental-Structure.html">Fundamental Structure</a>, Up: <a
href="Regular-Expressions.html">Regular Expressions</a> [<a
href="index.html#SEC_Contents" title="Table of contents"
rel="contents">Contents</a>][<a href="Index.html" title="Index"
rel="index">Index</a>]</p>
+Next: <a href="Special-Backslash-Expressions.html">Special Backslash
Expressions</a>, Previous: <a href="Fundamental-Structure.html">Fundamental
Structure</a>, Up: <a href="Regular-Expressions.html">Regular Expressions</a>
[<a href="index.html#SEC_Contents" title="Table of contents"
rel="contents">Contents</a>][<a href="Index.html" title="Index"
rel="index">Index</a>]</p>
</div>
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