GNU bug report logs - #32838
Regression in grep 3.1: Grep '$' matcher no longer works on CRLF files on Windows

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Konstantin Kolinko <knst.kolinko <at> gmail.com>
To: bug-grep <at> gnu.org
Subject: Regression in grep 3.1: Grep '$' matcher no longer works on CRLF
 files on Windows
Date: 2018年9月25日 11:15:51 +0300

Hi!
This issue has been reported downstream at Git for Windows project, here:
https://github.com/git-for-windows/git/issues/1841
Git for Windows includes a set of GNU utilities. IIRC those come from
MinGW project.
Summarizing from the downstream report:
Actual output, with grep 3.1 (in Git for Windows 2.19.0):
[[[
$ grep --version
grep (GNU grep) 3.1
...
$ cat > foo.txt
foo:
bar
baz:
$ unix2dos foo.txt
unix2dos: converting file foo.txt to DOS format...
$ grep ':$' < foo.txt
$ grep --line-regexp '.*:' foo.txt
$ grep --line-regexp '.*:' < foo.txt
]]]
Expected output, observable with grep 3.0 (in Git for Windows 2.18.0),
or if I run dos2unix on the file:
[[[
$ cp foo.txt foo2.txt
$ dos2unix foo2.txt
dos2unix: converting file foo2.txt to Unix format...
$ grep ':$' < foo2.txt
foo:
baz:
$ grep --line-regexp '.*:' foo2.txt
foo:
baz:
$ grep --line-regexp '.*:' < foo2.txt
foo:
baz:
]]]
I guess that this regression is related to the following changes
listed in the NEWS file, apparently implemented via #25707:
[[[
 The following changes affect only MS-Windows platforms. First, the
 --binary (-U) option now governs whether binary I/O is used, instead
 of a heuristic that was sometimes incorrect. Second, the
 --unix-byte-offsets (-u) option now has no effect on MS-Windows too.
]]]
Best regards,
Konstantin Kolinko

Message #12 received at 32838 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Konstantin Kolinko <knst.kolinko <at> gmail.com>, Holger Klene <h.klene <at> gmx.de>
Cc: 33162 <at> debbugs.gnu.org, 32838 <at> debbugs.gnu.org
Subject: Re: bug#32838: Regression in grep 3.1: Grep '$' matcher no longer
 works on CRLF files on Windows
Date: 2020年9月21日 15:41:23 -0700

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.

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