From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 29 Mar 2021 18:26:54 GMT
Subject: Re: [PATCH v2 1/5] Makefile: rename objects in-place, don't clobber
Message-ID: <xmqqr1jxke8h.fsf@gitster.g>
In-Reply-To: <xmqqy2e5kegv.fsf@gitster.g>

Junio C Hamano <gitster@pobox.com> writes:

>>     	thing:
>>     		rm -f thing thing+
>>     		prepare contents for thing >thing+
>
> Did I say that?  I recall I specifically avoided the "redirection"
> because this is *NOT* shell-script only principle.

Ah, I did say that in the response to the previous iteration.  But
the same principle applied to your other patch for [ce]tags which
took "-o output", and I was recalling my response to that thread.

In any case, whether "cmd >thing" or "cmd -o thing", if cmd leaves a
broken output in thing when it fails, it needs the "into thing+ and
rename to thing" dance.  Redirecion always need it, but a well behaved
command like $(CC) should not need it.

Thanks.