Re: [PATCH v2] contrib: git-cpcover: copy cover letter

[Eric Sunshine <sunshine@sunshineco.com>]

On Wed, Dec 4, 2019 at 11:23 AM Junio C Hamano <gitster@pobox.com> wrote:
> Eric Sunshine <sunshine@sunshineco.com> writes:
> > I could even imagine a new option -V<n> which has the combined effect
> > of setting the re-roll count (like -v) and automagically copying the
> > cover letter material from cover letter v<n-1> located in <dir>.
>
> I actually looked into doing something similar but without any new
> option (i.e. unconditionally --cover-letter with -v<n> would check
> for v<n-1>-0000-cover.letter and does the right thing) some time
> ago.

Yes, I like that better than a new option, and wanted to suggest it as
well, however... (see below)

> But I think that was even before we integrated the range-diff stuff,
> which does seem to use the "given we are doing <n>, let's compare
> with <n-1>" thing, so perhaps it is not too difficult.

Yup.

> I am just saying that I think the change would not have to be opt-in,
> but can be unconditionally made, simply because replacing the BLURB
> HERE placeholder with *anything* written by human user previously is
> a 100% improvement ;-)

I had started writing the same in my previous reply but then realized
that it could break existing tooling which uses -v and --cover-letter
together and which searches for the well-known BLURB HERE placeholder
to replace it automatically. If I'm wrong about possibly breaking
existing tooling, then I'd also vote for this behavior kicking in
automatically with -v and --cover-letter specified together.