Re: [PATCH] format-patch: make cover letters always text/plain

> On Mon, Apr 30, 2018 at 8:02 PM, brian m. carlson
> <sandals@crustytoothpaste.net> wrote:
> > When formatting a series of patches using --attach and --cover-letter,
> > the cover letter lacks the closing MIME boundary, violating RFC 2046.
> > Certain clients, such as Thunderbird, discard the message body in such a
> > case.
> >
> > Since the cover letter is just one part and sending it as
> > multipart/mixed is not very useful, always emit it as text/plain,
> > avoiding the boundary problem altogether.
> >
> > Reported-by: Patrick Hemmer <git@stormcloud9.net>
> > Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
> > ---
> > diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
> > @@ -1661,6 +1661,15 @@ test_expect_success 'format-patch --base with --attach' '
> > +test_expect_success 'format-patch --attach cover-letter only is non-multipart' '
> > +       test_when_finished "rm -r patches" &&
> > +       git format-patch -o patches --cover-letter --attach=mimemime --base=HEAD~ -1 &&
> 
> Nit: "rm -rf" would be a bit more robust against git-format-patch
> somehow crashing before creating the "patches" directory.