Re: [PATCH 2/5] interpret-trailers: add an option to show only the trailers

> In theory it's easy for any reader who wants to parse
> trailers to do so. But there are a lot of subtle corner
> cases around what counts as a trailer, when the trailer
> block begins and ends, etc. Since interpret-trailers already
> has our parsing logic, let's let callers ask it to just
> output the trailers.
>
> They still have to parse the "key: value" lines, but at
> least they can ignore all of the other corner cases.
>
> Signed-off-by: Jeff King <peff@peff.net>
> ---

> +test_expect_success 'only-trailers omits non-trailer in middle of block' '
> +       cat >expected <<-\EOF &&
> +               Signed-off-by: nobody <nobody@nowhere>
> +               Signed-off-by: somebody <somebody@somewhere>
> +               sign: A U Thor <author@example.com>
> +       EOF
> +       git interpret-trailers --only-trailers >actual <<-\EOF &&
> +               subject
> +
> +               it is important that the trailers below are signed-off-by
> +               so that they meet the "25% trailers Git knows about" heuristic
> +
> +               Signed-off-by: nobody <nobody@nowhere>
> +               this is not a trailer