Re: [PATCH v2 1/5] Makefile: rename objects in-place, don't clobber

From: Junio C Hamano <gitster@pobox.com>
Date: Mar 29, 2021, 18:26 UTC
Message-ID: <xmqqr1jxke8h.fsf@gitster.g>
In-Reply-To: <xmqqy2e5kegv.fsf@gitster.g>

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

Show 6 quoted lines

>>     	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.

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