Re: [PATCH v2 3/5] doc: remove unnecessary rm instances

From: Felipe Contreras <felipe.contreras@gmail.com>
To: Jeff King <peff@peff.net>, Felipe Contreras <felipe.contreras@gmail.com>
Cc: git@vger.kernel.org, "Junio C Hamano" <gitster@pobox.com>,
	"brian m . carlson" <sandals@crustytoothpaste.net>,
	"Martin Ågren" <martin.agren@gmail.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Subject: Re: [PATCH v2 3/5] doc: remove unnecessary rm instances
Date: Mon, 17 May 2021 05:42:31 -0500	[thread overview]
Message-ID: <60a24897afda0_126a0520834@natae.notmuch> (raw)
In-Reply-To: <YKIu/DUfmU8JbDY2@coredump.intra.peff.net>

Jeff King wrote:
> On Sat, May 15, 2021 at 07:04:05AM -0500, Felipe Contreras wrote:
> > Jeff King wrote:

> > > That does differ in that it removes $@+, too, but the premise is the
> > > same (we know that $@+ could not be a problem, as we're about to
> > > clobber it anyway).
> > > 
> > > I'm OK with getting rid of all of them, but it seems like it ought to be
> > > happening all in this patch.
> > 
> > Yeah, but the rationale is different.
> > 
> >   1. $(RM) $@: these remove the target file because of permissions
> >      (i.e. root owned)
> >   2. $(RM) $@+ $@ && $(CODE) && mv $@+ $@: these are for interrupted builds
> > 
> > To get rid of #2 we need an alternative solution, like .DELETE_ON_ERROR,
> > to get rid of #1 we don't, we can just do it.
> 
> To get rid of the "mv", you need something like .DELETE_ON_ERROR. But
> the "rm" in the second case has nothing to do with interrupted builds.
> It is is doing the same nothing that the ones you are getting rid of
> here are.
> 
> I.e., I was suggesting to get rid of the "rm" call in the hunk I showed
> above, but leave the "mv" for the follow-on patch.

Ahh, I see. It's quite a bit more work, but sure, I can do that.

-- 
Felipe Contreras