GNU bug report logs - #75806
Trailing spaces; pattern "\s" before "[[:cntrl:]]" faulty

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Andreas BROCKMANN <andreas.brockmann <at> diehl.com>
Subject: bug#75806: closed (Re: bug#75806: Trailing spaces; pattern "\s"
 before "[[:cntrl:]]" faulty)
Date: Sat, 25 Jan 2025 19:32:02 +0000

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Your bug report

#75806: Trailing spaces; pattern "\s" before "[[:cntrl:]]" faulty

which was filed against the grep package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 75806 <at> debbugs.gnu.org.

-- 
75806: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=75806
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Andreas BROCKMANN <andreas.brockmann <at> diehl.com>
Cc: "cygwin <at> cygwin.com" <cygwin <at> cygwin.com>, 75806-done <at> debbugs.gnu.org
Subject: Re: bug#75806: Trailing spaces; pattern "\s" before "[[:cntrl:]]"
 faulty
Date: Sat, 25 Jan 2025 11:31:06 -0800

On 2025-01-24 05:27, Andreas BROCKMANN via Bug reports for GNU grep wrote:
> The 1st command below correctly reports trailing spaces, for Unix and Windows format files.
> The 2nd one incorrectly reports all lines.
> 
>    grep -sHn -i " [[:cntrl:]]*$" *.vhd
>    grep -sHn -i "\s[[:cntrl:]]*$" *.vhd

I don't see a bug. The latter command is equivalent to:

   grep -Hins '[[:space:]][[:cntrl:]]*$' *.vhd

and if the input files use Microsoft CRLF format then [[:space:]] 
matches the CR at the end of every line and [[:cntrl:]]* matches the 
empty string after the CR.

Possibly you need to use Unix LF format, or use the --text option, or 
something like that.

Marking the bug as done.

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From: Andreas BROCKMANN <andreas.brockmann <at> diehl.com>
To: "bug-grep <at> gnu.org" <bug-grep <at> gnu.org>
Cc: "cygwin <at> cygwin.com" <cygwin <at> cygwin.com>
Subject: Trailing spaces; pattern "\s" before "[[:cntrl:]]" faulty
Date: Fri, 24 Jan 2025 13:27:13 +0000

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Hi,

The 1st command below correctly reports trailing spaces, for Unix and Windows format files.
The 2nd one incorrectly reports all lines.

  grep -sHn -i " [[:cntrl:]]*$" *.vhd
  grep -sHn -i "\s[[:cntrl:]]*$" *.vhd

grep -V
grep (GNU grep) 3.0
Packaged by Cygwin (3.0-2)
Copyright (C) 2017 Free Software Foundation, Inc.

cmd --help
Microsoft Windows [Version 10.0.19045.5371]
(c) Microsoft Corporation. All rights reserved.

Kind Regards
Brockmann

Andreas Brockmann, Dipl.-Ing.
Hardware Engineer
Strategic Business Segment Aircraft Systems
HW & Mech. Engineering & Config. Management

phone +49 7551 891 4104
andreas.brockmann <at> diehl.com | www.diehl.com/aviation

Diehl Aerospace GmbH
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