GNU logs - #33162, boring messages

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Subject: bug#33162: Pattern partially greps windows line-endings since 3.1
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Hello!

I think, I may have stumbled upon a bug in gnu-grep version 3.1 which was not present in 3.0 and 2.6.3

Steps to reproduce:
A) generate test-file: printf "a --\r\nb --\nc --\rd --\n\r" > test.txt

B) check test-file: md5sum.exe test.txt
e3ef5d742eee3a7f326bc7b4b391cc42 *test.txt

C) run old grep 3.0 or 2.6.3:
$ grep -ce '--[^ -]' test.txt
1
$ grep -ne '--[^ -]' test.txt
3:c --d --

D) run new grep 3.1:
$ grep -ce '--[^ -]' test.txt
2
$ grep -ne '--[^ -]' test.txt

d --

It looks as if the 3.1 has an issue with alternative line-ending styles sometimes matched as part of the pattern:
a --\r\n    (windows) is messed around
b --\n      (unix) seems to work OK
c --\r      just for completenes
d --\n\r    just for completenes

You can modify the printf statement to generate each test-case into it's own file. b and d are equally not found, c is always found. The behavior changed for a: [^ -] now matches the \r in 3.1 which was ignored in older versions.

Thanks
Holger

PS: This version of grep was distributed along with git-bash for Windows 64bit
https://github.com/git-for-windows/git/releases/download/v2.19.1.windows.1/Git-2.19.1-64-bit.exe
grep (GNU grep) 3.1
GNU bash, version 4.4.19(2)-release (x86_64-pc-msys)
git version 2.19.1.windows.1

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: "Holger Klene" <h.klene@HIDDEN>
Subject: bug#33162: Acknowledgement (Pattern partially greps windows
 line-endings since 3.1)
Message-ID: <handler.33162.B.15405583935224.ack <at> debbugs.gnu.org>
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Date: Fri, 26 Oct 2018 12:54:01 +0000

Thank you for filing a new bug report with debbugs.gnu.org.

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33162: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D33162
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merge 32838 33162

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Subject: 32838 is wishlist
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severity 32838 wishlist

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Subject: bug#33162: bug#32838: Regression in grep 3.1: Grep '$' matcher no longer works on CRLF files on Windows
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On 9/25/18 1:15 AM, Konstantin Kolinko wrote:

> https://github.com/git-for-windows/git/issues/1841
Looking at that downstream bug report, it appears that this is a wishlist 
request and that there have been no takers for implementing an 
MS-Windows-specific --strip-trailing-cr option. I have marked Bug#32838 and 
Bug#33162 as wishlist in the grep bug database.
Last modified: Mon, 21 Sep 2020 22:45:01 UTC

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