Re: [PATCH v3] format-patch: assume --cover-letter for diff in multi-patch series

Rubén Justo [off-list ref] writes:

I'm curious, a test like: 

test_expect_success "format-patch --range-diff, implicit --cover-letter" '
	test_when_finished "rm v2-000?-*" &&
	test_must_fail git format-patch --no-cover-letter
		-v2 --range-diff=topic main..unmodified

isn't it confusing?

It is, but what makes it confusing is that the title does not
describe what it tests, no?  It tests that --no-cover-letter
disables implicit cover-letter generation even with the presence of
--range-diff.

In the context of t3206-range-diff.sh, we know we are talking about
the "range-diff", and mention of "cover-letter" is a hint enough
that the "format-patch" is involved, so perhaps titles like

    test_expect_success 'explicit --no-cover-letter defeats implied --cover-letter'

and

    test_expect_success '--cover-letter is implied for multi-patch series'

would be clear enough and convey what the tests are actually doing.