On Sun, Apr 29, 2018 at 09:40:13PM -0400, Patrick Hemmer wrote:
> When you use `git format-patch --cover-letter --attach`, the cover
> letter does not have the trailing MIME boundary. RFC2046 states that the
> last part must be followed by a closing boundary. This causes some email
> clients (Thunderbird in my case) to discard the message body.
> This is experienced with git 2.16.3.

Thanks for reporting this.  I can confirm this with a reasonably recent
next.  Let me see if I can come up with a patch.
-- 
brian m. carlson: Houston, Texas, US
OpenPGP: https://keybase.io/bk2204