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Changes to grep/manual/html_node/The-Backslash-Character-and-Special-Exp
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From: |
Jim Meyering |
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Subject: |
Changes to grep/manual/html_node/The-Backslash-Character-and-Special-Expressions.html, v |
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Date: |
Sat, 14 Aug 2021 16:46:44 -0400 (EDT) |
CVSROOT: /webcvs/grep
Module name: grep
Changes by: Jim Meyering <meyering> 21/08/14 16:46:41
Index: html_node/The-Backslash-Character-and-Special-Expressions.html
===================================================================
RCS file:
/webcvs/grep/grep/manual/html_node/The-Backslash-Character-and-Special-Expressions.html,v
retrieving revision 1.31
retrieving revision 1.32
diff -u -b -r1.31 -r1.32
--- html_node/The-Backslash-Character-and-Special-Expressions.html 28 Sep
2020 03:36:49 -0000 1.31
+++ html_node/The-Backslash-Character-and-Special-Expressions.html 14 Aug
2021 20:46:41 -0000 1.32
@@ -1,8 +1,11 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd";>
<html>
+<!-- Created by GNU Texinfo 6.8, https://www.gnu.org/software/texinfo/ -->
+<head>
+<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, 2008-2020 Free Software Foundation,
+Copyright (C) 1999-2002, 2005, 2008-2021 Free Software Foundation,
Inc.
Permission is granted to copy, distribute and/or modify this document
@@ -11,99 +14,91 @@
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". -->
-<!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ -->
-<head>
-<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<title>The Backslash Character and Special Expressions (GNU Grep 3.5)</title>
+<title>The Backslash Character and Special Expressions (GNU Grep 3.7)</title>
-<meta name="description" content="The Backslash Character and Special
Expressions (GNU Grep 3.5)">
-<meta name="keywords" content="The Backslash Character and Special Expressions
(GNU Grep 3.5)">
+<meta name="description" content="The Backslash Character and Special
Expressions (GNU Grep 3.7)">
+<meta name="keywords" content="The Backslash Character and Special Expressions
(GNU Grep 3.7)">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
-<link href="index.html#Top" rel="start" title="Top">
-<link href="Index.html#Index" rel="index" title="Index">
+<meta name="viewport" content="width=device-width,initial-scale=1">
+
+<link href="index.html" rel="start" title="Top">
+<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#Regular-Expressions" rel="up"
title="Regular Expressions">
-<link href="Anchoring.html#Anchoring" rel="next" title="Anchoring">
-<link
href="Character-Classes-and-Bracket-Expressions.html#Character-Classes-and-Bracket-Expressions"
rel="prev" title="Character Classes and Bracket Expressions">
+<link href="Regular-Expressions.html" rel="up" title="Regular Expressions">
+<link href="Anchoring.html" rel="next" title="Anchoring">
+<link href="Character-Classes-and-Bracket-Expressions.html" rel="prev"
title="Character Classes and Bracket Expressions">
<style type="text/css">
<!--
+a.copiable-anchor {visibility: hidden; text-decoration: none; line-height: 0em}
a.summary-letter {text-decoration: none}
blockquote.indentedblock {margin-right: 0em}
-blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
-blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
-div.lisp {margin-left: 3.2em}
-div.smalldisplay {margin-left: 3.2em}
-div.smallexample {margin-left: 3.2em}
-div.smalllisp {margin-left: 3.2em}
kbd {font-style: oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
-pre.smalldisplay {font-family: inherit; font-size: smaller}
-pre.smallexample {font-size: smaller}
-pre.smallformat {font-family: inherit; font-size: smaller}
-pre.smalllisp {font-size: smaller}
span.nolinebreak {white-space: nowrap}
span.roman {font-family: initial; font-weight: normal}
span.sansserif {font-family: sans-serif; font-weight: normal}
+span:hover a.copiable-anchor {visibility: visible}
ul.no-bullet {list-style: none}
-->
</style>
-<link rel="stylesheet" type="text/css" href="/software/gnulib/manual.css">
+<link rel="stylesheet" type="text/css"
href="https://www.gnu.org/software/gnulib/manual.css";>
</head>
<body lang="en">
-<a name="The-Backslash-Character-and-Special-Expressions"></a>
+<div class="section" id="The-Backslash-Character-and-Special-Expressions">
<div class="header">
<p>
-Next: <a href="Anchoring.html#Anchoring" accesskey="n"
rel="next">Anchoring</a>, Previous: <a
href="Character-Classes-and-Bracket-Expressions.html#Character-Classes-and-Bracket-Expressions"
accesskey="p" rel="prev">Character Classes and Bracket Expressions</a>, Up: <a
href="Regular-Expressions.html#Regular-Expressions" 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#Index" title="Index" rel="index">Index</a>]</p>
+Next: <a href="Anchoring.html" accesskey="n" rel="next">Anchoring</a>,
Previous: <a href="Character-Classes-and-Bracket-Expressions.html"
accesskey="p" rel="prev">Character Classes and Bracket Expressions</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>
-<a name="The-Backslash-Character-and-Special-Expressions-1"></a>
-<h3 class="section">3.3 The Backslash Character and Special Expressions</h3>
-<a name="index-backslash"></a>
+<span id="The-Backslash-Character-and-Special-Expressions-1"></span><h3
class="section">3.3 The Backslash Character and Special Expressions</h3>
+<span id="index-backslash"></span>
-<p>The ‘<samp>\</samp>’ character,
+<p>The ‘<samp>\</samp>’ character followed by a special character
is a regular
+expression that matches the special character.
+The ‘<samp>\</samp>’ character,
when followed by certain ordinary characters,
takes a special meaning:
</p>
<dl compact="compact">
-<dt>‘<samp>\b</samp>’</dt>
+<dt><span>‘<samp>\b</samp>’</span></dt>
<dd><p>Match the empty string at the edge of a word.
</p>
</dd>
-<dt>‘<samp>\B</samp>’</dt>
+<dt><span>‘<samp>\B</samp>’</span></dt>
<dd><p>Match the empty string provided it’s not at the edge of a word.
</p>
</dd>
-<dt>‘<samp>\<</samp>’</dt>
-<dd><p>Match the empty string at the beginning of word.
+<dt><span>‘<samp>\<</samp>’</span></dt>
+<dd><p>Match the empty string at the beginning of a word.
</p>
</dd>
-<dt>‘<samp>\></samp>’</dt>
-<dd><p>Match the empty string at the end of word.
+<dt><span>‘<samp>\></samp>’</span></dt>
+<dd><p>Match the empty string at the end of a word.
</p>
</dd>
-<dt>‘<samp>\w</samp>’</dt>
+<dt><span>‘<samp>\w</samp>’</span></dt>
<dd><p>Match word constituent, it is a synonym for
‘<samp>[_[:alnum:]]</samp>’.
</p>
</dd>
-<dt>‘<samp>\W</samp>’</dt>
+<dt><span>‘<samp>\W</samp>’</span></dt>
<dd><p>Match non-word constituent, it is a synonym for
‘<samp>[^_[:alnum:]]</samp>’.
</p>
</dd>
-<dt>‘<samp>\s</samp>’</dt>
+<dt><span>‘<samp>\s</samp>’</span></dt>
<dd><p>Match whitespace, it is a synonym for
‘<samp>[[:space:]]</samp>’.
</p>
</dd>
-<dt>‘<samp>\S</samp>’</dt>
+<dt><span>‘<samp>\S</samp>’</span></dt>
<dd><p>Match non-whitespace, it is a synonym for
‘<samp>[^[:space:]]</samp>’.
</p>
</dd>
@@ -112,6 +107,7 @@
<p>For example, ‘<samp>\brat\b</samp>’ matches the separate word
‘<samp>rat</samp>’,
‘<samp>\Brat\B</samp>’ matches ‘<samp>crate</samp>’
but not ‘<samp>furry rat</samp>’.
</p>
+</div>
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