Re: [PATCH] setup: tweak upgrade policy to grandfather worktreeconfig

> I also like that you are actually fixing the case where a user in
> the bad state _can_ get out using "git sparse-checkout init".
>
> This can be verified by adding this test:
>
> test_expect_success 'git sparse-checkout works if repository format is wrong' '
> 	test_when_finished git -C repo config core.repositoryFormatVersion 1 &&
> 	git -C repo sparse-checkout init &&
> 	git -C repo config core.repositoryFormatVersion >actual &&
> 	echo 1 >expect &&
> 	test_cmp expect actual &&
> 	git -C repo config core.repositoryFormatVersion 0 &&
> 	git -C repo sparse-checkout init &&
> 	git -C repo config core.repositoryFormatVersion >actual &&
> 	test_cmp expect actual
> '
>
>> Signed-off-by: Junio C Hamano <gitster@pobox.com>
>> ---
>> 
>>  * This time with a log message to explain and justify the change,
>>    with a matching tweak to the test script, designed to be applied
>>    on top, but feel free to squash it in if you agree with me that
>>    we do not need two separate commits for this.
>
> Since this commit removes all evidence of the previous one, I would
> recommend just squashing them together.