From: Junio C Hamano <gitster@pobox.com>
Date: Fri, 30 Jan 2015 20:20:02 GMT
Subject: Re: [PATCH] apply: refuse touching a file beyond symlink
Message-ID: <xmqqwq44auml.fsf@gitster.dls.corp.google.com>
In-Reply-To: <20150130201620.GA4133@peff.net>

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.