Package: sed
Version: 4.2.1-7
Severity: important
I illustrate the bug by two examples. In each case I have a file called
bookmarks.html with a particular line in it containing the string
'Bookmarks Toolbar'. I pipeline the result to diff to find out the
exact effect of the given sed one-line script.
I. Command:
sed '/Bookmarks Toolbar/p' <bookmarks.html |diff -au bookmarks.html -
Result:
--- bookmarks.html 2010-09-03 09:39:46.000000000 -0700
+++ - 2010-09-05 08:11:10.926462418 -0700
@@ -10814,6 +10814,8 @@
<DD>Guides for designing web themes and templates on a wide range of Content
Management Systems and related software.
</DL><p>
<DT><H3 ADD_DATE="1278709936" LAST_MODIFIED="1283531292"
PERSONAL_TOOLBAR_FOLDER="true">Bookmarks Toolbar</H3>
+ <DT><H3 ADD_DATE="1278709936" LAST_MODIFIED="1283531292"
PERSONAL_TOOLBAR_FOLDER="true">Bookmarks Toolbar</H3>
+<DD>Add bookmarks to this folder to see them displayed on the Bookmarks Toolbar
<DD>Add bookmarks to this folder to see them displayed on the Bookmarks Toolbar
<DL><p>
</DL><p>
Issue: the p command prints out a pattern consisting of the matched line
as well as the next one.
II. Command:
sed '/Bookmarks Toolbar/d' <bookmarks.html |diff -au bookmarks.html -
Result:
--- bookmarks.html 2010-09-03 09:39:46.000000000 -0700
+++ - 2010-09-05 08:16:39.990467770 -0700
@@ -10813,8 +10813,6 @@
<DT><A HREF="http://www.themeswiki.org/Main_Page";
ADD_DATE="1210889368" LAST_MODIFIED="1210889534"
LAST_CHARSET="UTF-8">ThemesWiki</A>
<DD>Guides for designing web themes and templates on a wide range of Content
Management Systems and related software.
</DL><p>
- <DT><H3 ADD_DATE="1278709936" LAST_MODIFIED="1283531292"
PERSONAL_TOOLBAR_FOLDER="true">Bookmarks Toolbar</H3>
-<DD>Add bookmarks to this folder to see them displayed on the Bookmarks Toolbar
<DL><p>
</DL><p>
</DL><p>
Issue: this classic one-liner sed script for deleting a line containing
a pattern ends up deleting the line with the pattern as well as the
next line.
N.B. if you use the --posix sed option you get the same two bad
results as above.
I have classified this bug as serious because it will affect any sed
script that uses the pattern space.
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages sed depends on:
ii dpkg 1.15.8.4 Debian package management system
ii install-info 4.13a.dfsg.1-5 Manage installed documentation in
ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib
ii libselinux1 2.0.96-1 SELinux runtime shared libraries
sed recommends no packages.
sed suggests no packages.
-- no debconf information
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