From: brian m. carlson <sandals@crustytoothpaste.net>
Date: Fri, 20 Nov 2020 02:09:24 GMT
Subject: Re: [PATCH 1/7] t1300: test "set all" mode with value_regex
Message-ID: <20201120020924.GF389879@camp.crustytoothpaste.net>
In-Reply-To: <xmqqo8jtvvby.fsf@gitster.c.googlers.com>

On 2020-11-19 at 22:24:33, Junio C Hamano wrote:
> "Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com> writes:
> 
> > +test_expect_success 'set all config with value_regex' '
> > +	q_to_tab >initial <<-\EOF &&
> > +	[abc]
> > +	Qkey = one
> > +	EOF
> > +
> > +	cp initial .git/config &&
> 
> Not a new problem with this patch, but does the above pattern
> introduce potential problems?  I am wondering if overwriting the
> config file with a little piece that has only the stuff the test is
> interested in, while wiping the parts that may be essential for
> repository integrity (e.g. "extensions.objectFormat"), is OK in the
> long run (brian cc'ed for his sha256 work).  There also are
> autodetected crlf settings etc. that are in the .git/config when a
> test repository is created, and we probably would want to keep them
> intact.

I haven't looked at the code, but if you're just using git config in a
test, then overwriting the config file shouldn't be a problem with
SHA-256.  If you're trying to read or write objects or the index, then
that's definitely a problem, and you'll definitely notice exciting
failures if you do that.
-- 
brian m. carlson (he/him or they/them)
Houston, Texas, US