Subject: bug#19330: bug in grep -Pv ":\n" or even in rep -Pv ":\n"

From: Paul Eggert <[email-masked]>
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.