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Changes to grep/manual/html_node/Basic-vs-Extended.html,v
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From: |
Jim Meyering |
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Subject: |
Changes to grep/manual/html_node/Basic-vs-Extended.html,v |
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Date: |
Sun, 23 Nov 2014 22:23:38 +0000 |
CVSROOT: /webcvs/grep
Module name: grep
Changes by: Jim Meyering <meyering> 14/11/23 22:23:33
Index: html_node/Basic-vs-Extended.html
===================================================================
RCS file: /webcvs/grep/grep/manual/html_node/Basic-vs-Extended.html,v
retrieving revision 1.19
retrieving revision 1.20
diff -u -b -r1.19 -r1.20
--- html_node/Basic-vs-Extended.html 3 Jun 2014 14:47:02 -0000 1.19
+++ html_node/Basic-vs-Extended.html 23 Nov 2014 22:23:30 -0000 1.20
@@ -1,8 +1,8 @@
<html lang="en">
<head>
-<title>Basic vs Extended - GNU Grep 2.20</title>
+<title>Basic vs Extended - GNU Grep 2.21</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<meta name="description" content="GNU Grep 2.20">
+<meta name="description" content="GNU Grep 2.21">
<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">
@@ -45,13 +45,13 @@
<h3 class="section">3.6 Basic vs Extended Regular Expressions</h3>
-<p><a name="index-basic-regular-expressions-248"></a>
+<p><a name="index-basic-regular-expressions-253"></a>
In basic regular expressions the meta-characters ‘<samp><span
class="samp">?</span></samp>’, ‘<samp><span
class="samp">+</span></samp>’,
‘<samp><span class="samp">{</span></samp>’, ‘<samp><span
class="samp">|</span></samp>’, ‘<samp><span
class="samp">(</span></samp>’, and ‘<samp><span
class="samp">)</span></samp>’ lose their special meaning;
instead use the backslashed versions ‘<samp><span
class="samp">\?</span></samp>’, ‘<samp><span
class="samp">\+</span></samp>’, ‘<samp><span
class="samp">\{</span></samp>’,
‘<samp><span class="samp">\|</span></samp>’, ‘<samp><span
class="samp">\(</span></samp>’, and ‘<samp><span
class="samp">\)</span></samp>’.
- <p><a name="index-interval-specifications-249"></a>Traditional <samp><span
class="command">egrep</span></samp> did not support the ‘<samp><span
class="samp">{</span></samp>’ meta-character,
+ <p><a name="index-interval-specifications-254"></a>Traditional <samp><span
class="command">egrep</span></samp> did not support the ‘<samp><span
class="samp">{</span></samp>’ meta-character,
and some <samp><span class="command">egrep</span></samp> implementations
support ‘<samp><span class="samp">\{</span></samp>’ instead, so
portable scripts should avoid ‘<samp><span
class="samp">{</span></samp>’ in ‘<samp><span class="samp">grep
-E</span></samp>’ patterns and
should use ‘<samp><span class="samp">[{]</span></samp>’ to match a
literal ‘<samp><span class="samp">{</span></samp>’.
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