GNU bug report logs - #18398
Probably found a bug in grep

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#18398: closed (Probably found a bug in grep)
Date: Wed, 03 Sep 2014 20:16:02 +0000

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Your message dated Wed, 03 Sep 2014 13:15:19 -0700
with message-id <540776D7.1070205 <at> cs.ucla.edu>
and subject line Re: bug#18398: Probably found a bug in grep
has caused the debbugs.gnu.org bug report #18398,
regarding Probably found a bug in grep
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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18398: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=18398
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From: "Bergen, Andreas" <Andreas.Bergen <at> all-for-one.com>
To: "'bug-grep <at> gnu.org'" <bug-grep <at> gnu.org>
Subject: Probably found a bug in grep
Date: Wed, 3 Sep 2014 19:11:45 +0000

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Hi all,

I've probably found a bug in "grep".
Here's a way how to reproduce it:

s53mgt:/test2 # cat testfile
A
Ä
s53mgt:/test2 # grep -F -eÄ -eA testfile
A
Ä
s53mgt:/test2 # grep -i -eÄ -eA testfile
A
Ä
s53mgt:/test2 # grep -iF -eÄ -eA testfile
A

As you can see the last one does not give A and Ä but only A.

When I do the same with another testfile without an "Ä" (A-Umlaut) in it, it works like expected:
s53mgt:/test2 # cat testfile2
A
B
s53mgt:/test2 # grep -F -eB -eA testfile2
A
B
s53mgt:/test2 # grep -i -eB -eA testfile2
A
B
s53mgt:/test2 # grep -iF -eB -eA testfile2
A
B

s53mgt:/test2 # file testfile testfile2
testfile:  UTF-8 Unicode text
testfile2: ASCII text

Here's some information on my version of "grep".

s53mgt:/test2 # rpm -qif /bin/grep
Name        : grep                         Relocations: (not relocatable)
Version     : 2.5.1a                            Vendor: SUSE LINUX Products GmbH, Nuernberg, Germany
Release     : 20.17                         Build Date: Tue Apr 22 03:47:13 2008
Install Date: Mon Jul  6 16:21:37 2009      Build Host: blacher.suse.de
Group       : Productivity/Text/Utilities   Source RPM: grep-2.5.1a-20.17.src.rpm
Size        : 461697                           License: GPL v2 or later
Signature   : DSA/SHA1, Tue Apr 22 03:49:23 2008, Key ID a84edae89c800aca
Packager    : http://bugs.opensuse.org
URL         : http://www.gnu.org/software/grep/
Summary     : Print lines matching a pattern
Description :
GNU grep, the "fastest grep in the west" (hopefully).

`grep' searches for lines matching a pattern.



Can you confirm this?

What can I do about it?

Regards
  Andreas

---
Andreas Bergen
Solution Architect

All for One Steeb AG
Gottlieb-Manz-Straße 1
70794 Filderstadt
T  +49 711 78807-689
F  +49 711 78807-92689
M +49 151 53824-689
Andreas.Bergen <at> all-for-one.com<mailto:Andreas.Bergen <at> all-for-one.com>
www.all-for-one.com<http://www.all-for-one.com/>


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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: "Bergen, Andreas" <Andreas.Bergen <at> all-for-one.com>, 
 18398-done <at> debbugs.gnu.org
Subject: Re: bug#18398: Probably found a bug in grep
Date: Wed, 03 Sep 2014 13:15:19 -0700

Bergen, Andreas wrote:
> Version     : 2.5.1a

Thanks for the report.  As shown below, I can't reproduce the bug with 
grep 2.20 (the current version) in either the en_US.utf8 or the 
de_DE.utf8 locales.  grep 2.5.1a is pretty old (dated 2004) and several 
bugs have been fixed in this area in the last ten years, so I suggest 
upgrading and I'm taking the liberty of marking this as done.

$ cat testfile
A
Ä
$ grep -F -eÄ -eA testfile
A
Ä
$ grep -i -eÄ -eA testfile
A
Ä
$ grep -iF -eÄ -eA testfile
A
Ä

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