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From: Junio C Hamano <gitster@pobox.com>
To: Jeff King <peff@peff.net>
Cc: Git Mailing List <git@vger.kernel.org>,
        Josh Boyer <jwboyer@fedoraproject.org>,
        "Linux-Kernel\@Vger. Kernel. Org" <linux-kernel@vger.kernel.org>,
        twaugh@redhat.com, Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH] apply: refuse touching a file beyond symlink
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Date: Fri, 30 Jan 2015 12:20:02 -0800
In-Reply-To: <20150130201620.GA4133@peff.net> (Jeff King's message of "Fri, 30
	Jan 2015 15:16:20 -0500")
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Jeff King <peff@peff.net> writes:

> I had the impression that we did not apply in any arbitrary order that
> could work, but rather that we did deletions first followed by
> additions. But I am fairly ignorant of the apply code.

No, you are thinking about the write-out of the finished result,
which may have to turn existing directory to a file or vice versa on
the filesystem, but that happens _after_ we decide what to turn into
what else, completely in-core.

And the decision to determine what the input _means_ should not
depend on the order of patches in the input.