GNU bug report logs - #19330
bug in grep -Pv ":\n" or even in rep -Pv ":\n"

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

From: "Arul, Shankari Swetaambari" <shankari.swetaambari.arul <at> intel.com>
To: "bug-grep <at> gnu.org" <bug-grep <at> gnu.org>
Subject: bug in grep -Pv ":\n" or even in rep -Pv ":\n"
Date: Tue, 9 Dec 2014 18:43:49 +0000

[Message part 1 (text/plain, inline)]

Hi,

The grep expression grep -Pv ":\n" or  even in rep -Pv ":\n" is not working as expected.
Did anyone report a bug on this?

Ex: The above expression does not filter the following text always -
foo:

Sometimes it works but not always.

Thanks,
Shankari

[Message part 2 (text/html, inline)]

Message #8 received at 19330 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: "Arul, Shankari Swetaambari" <shankari.swetaambari.arul <at> intel.com>, 
 19330 <at> debbugs.gnu.org
Subject: Re: bug#19330: bug in grep -Pv ":\n" or even in rep -Pv ":\n"
Date: Wed, 10 Dec 2014 23:39:31 -0800

Arul, Shankari Swetaambari wrote:
> The grep expression grep -Pv ":\n"

Grep matches lines one at a time, so the Perl regular expression "\n" can never 
match anything.

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