[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Changes to grep/manual/html_node/The-Backslash-Character-and-Special-Exp
|
From: |
Jim Meyering |
|
Subject: |
Changes to grep/manual/html_node/The-Backslash-Character-and-Special-Expressions.html, v |
|
Date: |
Fri, 05 Feb 2016 00:45:06 +0000 |
CVSROOT: /webcvs/grep
Module name: grep
Changes by: Jim Meyering <meyering> 16/02/05 00:44:53
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 1.21
retrieving revision 1.22
diff -u -b -r1.21 -r1.22
--- html_node/The-Backslash-Character-and-Special-Expressions.html 2 Nov
2015 02:54:36 -0000 1.21
+++ html_node/The-Backslash-Character-and-Special-Expressions.html 5 Feb
2016 00:44:53 -0000 1.22
@@ -1,79 +1,120 @@
-<html lang="en">
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd";>
+<html>
+<!-- This manual is for grep, a pattern matching engine.
+
+Copyright (C) 1999-2002, 2005, 2008-2016 Free Software Foundation,
+Inc.
+
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU Free Documentation License, Version 1.3 or
+any later version published by the Free Software Foundation; with no
+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 6.0, http://www.gnu.org/software/texinfo/ -->
<head>
-<title>The Backslash Character and Special Expressions - GNU Grep 2.22</title>
+<title>GNU Grep 2.23: The Backslash Character and Special Expressions</title>
+
+<meta name="description" content="GNU Grep 2.23: The Backslash Character and
Special Expressions">
+<meta name="keywords" content="GNU Grep 2.23: The Backslash Character and
Special Expressions">
+<meta name="resource-type" content="document">
+<meta name="distribution" content="global">
+<meta name="Generator" content="makeinfo">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<meta name="description" content="GNU Grep 2.22">
-<meta name="generator" content="makeinfo 4.13">
-<link title="Top" rel="start" href="index.html#Top">
-<link rel="up" href="Regular-Expressions.html#Regular-Expressions"
title="Regular Expressions">
-<link rel="prev"
href="Character-Classes-and-Bracket-Expressions.html#Character-Classes-and-Bracket-Expressions"
title="Character Classes and Bracket Expressions">
-<link rel="next" href="Anchoring.html#Anchoring" title="Anchoring">
-<link href="http://www.gnu.org/software/texinfo/"; rel="generator-home"
title="Texinfo Homepage">
+<link href="index.html#Top" rel="start" title="Top">
+<link href="Index.html#Index" 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">
+<style type="text/css">
<!--
-This manual is for `grep', a pattern matching engine.
+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.nocodebreak {white-space: nowrap}
+span.nolinebreak {white-space: nowrap}
+span.roman {font-family: serif; font-weight: normal}
+span.sansserif {font-family: sans-serif; font-weight: normal}
+ul.no-bullet {list-style: none}
+-->
+</style>
+<link rel="stylesheet" type="text/css" href="/software/gnulib/manual.css">
-Copyright (C) 1999-2002, 2005, 2008-2015 Free Software Foundation,
-Inc.
- Permission is granted to copy, distribute and/or modify this
- document under the terms of the GNU Free Documentation License,
- Version 1.3 or any later version published by the Free Software
- Foundation; with no 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''.
- -->
-<meta http-equiv="Content-Style-Type" content="text/css">
-<style type="text/css"><!--
- pre.display { font-family:inherit }
- pre.format { font-family:inherit }
- pre.smalldisplay { font-family:inherit; font-size:smaller }
- pre.smallformat { font-family:inherit; font-size:smaller }
- pre.smallexample { font-size:smaller }
- pre.smalllisp { font-size:smaller }
- span.sc { font-variant:small-caps }
- span.roman { font-family:serif; font-weight:normal; }
- span.sansserif { font-family:sans-serif; font-weight:normal; }
---></style>
-<link rel="stylesheet" type="text/css" href="/software/gnulib/manual.css">
</head>
-<body>
-<div class="node">
+
+<body lang="en">
<a name="The-Backslash-Character-and-Special-Expressions"></a>
+<div class="header">
<p>
-Next: <a rel="next" accesskey="n"
href="Anchoring.html#Anchoring">Anchoring</a>,
-Previous: <a rel="previous" accesskey="p"
href="Character-Classes-and-Bracket-Expressions.html#Character-Classes-and-Bracket-Expressions">Character
Classes and Bracket Expressions</a>,
-Up: <a rel="up" accesskey="u"
href="Regular-Expressions.html#Regular-Expressions">Regular Expressions</a>
-<hr>
+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>
</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>
-<p><a name="index-backslash-249"></a>
-The ‘<samp><span class="samp">\</span></samp>’ character,
+<p>The ‘<samp>\</samp>’ character,
when followed by certain ordinary characters,
takes a special meaning:
+</p>
+<dl compact="compact">
+<dt>‘<samp>\b</samp>’</dt>
+<dd><p>Match the empty string at the edge of a word.
+</p>
+</dd>
+<dt>‘<samp>\B</samp>’</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.
+</p>
+</dd>
+<dt>‘<samp>\></samp>’</dt>
+<dd><p>Match the empty string at the end of word.
+</p>
+</dd>
+<dt>‘<samp>\w</samp>’</dt>
+<dd><p>Match word constituent, it is a synonym for
‘<samp>[_[:alnum:]]</samp>’.
+</p>
+</dd>
+<dt>‘<samp>\W</samp>’</dt>
+<dd><p>Match non-word constituent, it is a synonym for
‘<samp>[^_[:alnum:]]</samp>’.
+</p>
+</dd>
+<dt>‘<samp>\s</samp>’</dt>
+<dd><p>Match whitespace, it is a synonym for
‘<samp>[[:space:]]</samp>’.
+</p>
+</dd>
+<dt>‘<samp>\S</samp>’</dt>
+<dd><p>Match non-whitespace, it is a synonym for
‘<samp>[^[:space:]]</samp>’.
+</p>
+</dd>
+</dl>
+
+<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>
- <dl>
-<dt>‘<samp><span class="samp">\b</span></samp>’<dd>Match the empty
string at the edge of a word.
-
- <br><dt>‘<samp><span class="samp">\B</span></samp>’<dd>Match
the empty string provided it's not at the edge of a word.
-
- <br><dt>‘<samp><span
class="samp">\<</span></samp>’<dd>Match the empty string at the
beginning of word.
-
- <br><dt>‘<samp><span
class="samp">\></span></samp>’<dd>Match the empty string at the end of
word.
-
- <br><dt>‘<samp><span class="samp">\w</span></samp>’<dd>Match
word constituent, it is a synonym for ‘<samp><span
class="samp">[_[:alnum:]]</span></samp>’.
-
- <br><dt>‘<samp><span class="samp">\W</span></samp>’<dd>Match
non-word constituent, it is a synonym for ‘<samp><span
class="samp">[^_[:alnum:]]</span></samp>’.
-
- <br><dt>‘<samp><span class="samp">\s</span></samp>’<dd>Match
whitespace, it is a synonym for ‘<samp><span
class="samp">[[:space:]]</span></samp>’.
-
- <br><dt>‘<samp><span class="samp">\S</span></samp>’<dd>Match
non-whitespace, it is a synonym for ‘<samp><span
class="samp">[^[:space:]]</span></samp>’.
-
- </dl>
-
- <p>For example, ‘<samp><span
class="samp">\brat\b</span></samp>’ matches the separate word
‘<samp><span class="samp">rat</span></samp>’,
-‘<samp><span class="samp">\Brat\B</span></samp>’ matches
‘<samp><span class="samp">crate</span></samp>’ but not
‘<samp><span class="samp">furry rat</span></samp>’.
- </body></html>
+</body>
+</html>
| [Prev in Thread] |
Current Thread |
[Next in Thread] |
- Changes to grep/manual/html_node/The-Backslash-Character-and-Special-Expressions.html, v,
Jim Meyering <=