GNU bug report logs - #45019
28.0.50; Odd "grep -n" behaviour

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

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.0.50; Odd "grep -n" behaviour
Date: Thu, 03 Dec 2020 11:23:39 +0100

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

emacs -Q
M-: (grep "grep -n emacs configure") RET

Everything works fine:

[Message part 2 (image/png, inline)]

[Message part 3 (text/plain, inline)]

Repeat:

M-: (grep "grep -n emacs configure") RET

Things do not work now:

[Message part 4 (image/png, inline)]

[Message part 5 (text/plain, inline)]

Because the second time around it did not add "/dev/null" at the end
there.

Adding a -H would have fixed this, but calling the same function twice
should either fail both times, or work both times.



-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #8 received at 45019 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: 45019 <at> debbugs.gnu.org
Subject: Re: bug#45019: 28.0.50; Odd "grep -n" behaviour
Date: Tue, 07 Jun 2022 13:25:04 +0200

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> Adding a -H would have fixed this, but calling the same function twice
> should either fail both times, or work both times.

This has been fixed in Emacs 29 by making it fail both times,
apparently.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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