Re: [PATCH v2 1/2] format-patch: create leading components of output directory

> On one hand, these object ids won't mean much to anyone who might have
> to debug such a test failure in the future, and on the other these
> tests are about 'git format-patch', not about 'git rev-list'.  If the
> check were written like this:
>
>   count=$(git rev-list --count master..side) &&
>   ls patches >list &&
>   test_line_count = $count list
>
> then the error message on failure would look something like this:
>
>   test_line_count: line count for list != 3
>   0001-first.patch
>   0002-second.patch
>
> which, I think, would be more useful.