On Fri, Aug 12, 2016 at 08:37:44AM -0700, Stefan Beller wrote:

> > Is there a reason for not unsetting `advice.detachedHead` at the
> > end of the test?
> 
> done
> 
> I did not consider to clean up after myself... what a selfish world!

The right way to do it is:

  test_config advice.detachedHead false &&
  ...

so that the cleanup runs whether or not you may it to the end of the
script.

> +test_expect_success 'no advice given for explicit detached head state' '
> +     git config advice.detachedHead false &&
> +     git checkout child &&
> +     git checkout --detach HEAD >expect &&
> +     git config advice.detachedHead true &&
> +     git checkout child &&
> +     git checkout --detach HEAD >actual &&
> +     test_cmp expect actual &&
> +     git checkout child &&
> +     git checkout HEAD >actual &&
> +     ! test_cmp expect actual &&
> +     git config --unset advice.detachedHead
> +'

Hmm. Using "!test_cmp" seems weird to me, just because it would falsely
claim success if something else unexpected changes. Our usual method for
making sure some particular output does not appear is "test_i18ngrep"
with a liberal pattern.

-Peff
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