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Changes to grep/manual/grep.html,v
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From: |
Jim Meyering |
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Subject: |
Changes to grep/manual/grep.html,v |
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Date: |
Wed, 7 Dec 2016 13:11:25 +0000 (UTC) |
CVSROOT: /webcvs/grep
Module name: grep
Changes by: Jim Meyering <meyering> 16/12/07 13:11:25
Index: grep.html
===================================================================
RCS file: /webcvs/grep/grep/manual/grep.html,v
retrieving revision 1.25
retrieving revision 1.26
diff -u -b -r1.25 -r1.26
--- grep.html 3 Oct 2016 02:37:08 -0000 1.25
+++ grep.html 7 Dec 2016 13:11:21 -0000 1.26
@@ -13,10 +13,10 @@
"GNU Free Documentation License". -->
<!-- Created by GNU Texinfo 6.3, http://www.gnu.org/software/texinfo/ -->
<head>
-<title>GNU Grep 2.26</title>
+<title>GNU Grep 2.27</title>
-<meta name="description" content="GNU Grep 2.26">
-<meta name="keywords" content="GNU Grep 2.26">
+<meta name="description" content="GNU Grep 2.27">
+<meta name="keywords" content="GNU Grep 2.27">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
@@ -58,7 +58,7 @@
</head>
<body lang="en">
-<h1 class="settitle" align="center">GNU Grep 2.26</h1>
+<h1 class="settitle" align="center">GNU Grep 2.27</h1>
@@ -122,7 +122,7 @@
<p><code>grep</code> prints lines that contain a match for a pattern.
</p>
-<p>This manual is for version 2.26 of GNU Grep.
+<p>This manual is for version 2.27 of GNU Grep.
</p>
<p>This manual is for <code>grep</code>, a pattern matching engine.
</p>
@@ -498,6 +498,8 @@
<a name="index-only-matching"></a>
<p>Print only the matched (non-empty) parts of matching lines,
with each such part on a separate output line.
+Output lines use the same delimiters as input, and delimiters are null
+bytes if <samp>-z</samp> (<samp>--null-data</samp>) is also used (see <a
href="#Other-Options">Other Options</a>).
</p>
</dd>
<dt><samp>-q</samp></dt>
@@ -615,10 +617,8 @@
so that the alignment of tabs looks normal.
This is useful with options that prefix their output to the actual content:
<samp>-H</samp>, <samp>-n</samp>, and <samp>-b</samp>.
-In order to improve the probability that lines
-from a single file will all start at the same column,
-this also causes the line number and byte offset (if present)
-to be printed in a minimum-size field width.
+This may also prepend spaces to output line numbers and byte offsets
+so that lines from a single file all start at the same column.
</p>
</dd>
<dt><samp>-u</samp></dt>
@@ -1347,8 +1347,10 @@
<a name="index-_002d_002dperl_002dregexp"></a>
<a name="index-matching-Perl_002dcompatible-regular-expressions"></a>
<p>Interpret the pattern as a Perl-compatible regular expression (PCRE).
-This is highly experimental and
+This is highly experimental, particularly when combined with
+the <samp>-z</samp> (<samp>--null-data</samp>) option, and
‘<samp>grep -P</samp>’ may warn of unimplemented features.
+See <a href="#Other-Options">Other Options</a>.
</p>
</dd>
</dl>
@@ -2052,7 +2054,7 @@
match newlines in the way you might expect.
</p>
<p>With the GNU <code>grep</code> option <samp>-z</samp>
(<samp>--null-data</samp>), each
-input “line” is terminated by a null byte; see <a
href="#Other-Options">Other Options</a>. Thus,
+input and output “line” is null-terminated; see <a
href="#Other-Options">Other Options</a>. Thus,
you can match newlines in the input, but typically if there is a match
the entire input is output, so this usage is often combined with
output-suppressing options like <samp>-q</samp>, e.g.:
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