Matthew Lear <matt@bubblegen.co.uk> writes:

>>
>> Please encrypt a message to the attached gpg key (from the notmuch test
>> suite), and send it to the list as an attachement if you can replicate
>> the bug.
>
> Done. Attached here.
>
> [ 1457383253_0.15104.sunrise,U=4513,FMD5=7e33429f656f1e6e9d79b29c3f82c57e:2,S: application/octet-stream ]

Thanks for the test case. I can duplicate a (the?) bug as
follows. Replying to that message from notmuch-show mode works, but
replying from notmuch-search mode yields

> !!! Bodypart insert error: Wrong type argument: number-or-marker-p, nil !!!
> [ application/pgp-encrypted ]
> Version: 1
> [ encrypted.asc: application/octet-stream (as text/plain) ]
> !!! Bodypart insert error: Internal error: No :content from ("show" "--format=sexp" "--include-html" "--part=3" "id:56DDE706.6060702@bubblegen.co.uk") !!!

Followed by the ciphertext.
> -----BEGIN PGP MESSAGE-----

If anyone wants to play with this, you just need to import the notmuch
test key into your keyring, something like

gpg --import path/to/notmuch-source/test/gnupg-secret-key.asc

What's odd is that the notmuch command in the error message works on the
command line.