Re: non-ascii email forwarding failures

["Antoine Beaupré" <anarcat@orangeseeds.org>]

On 2019-02-26 10:56:34, David Edmondson wrote:
> On Tuesday, 2019-02-26 at 00:33:33 -05, Antoine Beaupré wrote:
>
>> So I have no idea what's going on with mail forwards, but this is the
>> kind of stuff that happens to me all the time and I can't describe
>> correctly enough to file a bug.
>>
>> The gist of it is that, under some weird circumstances, notmuch-emacs
>> (message-mode.el?) will screw up email forwards in a big time. I just
>> forwarded (or did I just reply? not sure) that private email to the list
>> to trigger that bug...
>>
>> I get that from time to time. I think the key is that it's an email I
>> *sent* not *received*, which are somewhat different in their storage
>> mechanism...
>>
>> The first symptom will be that, when sending, I'd get a prompt like
>> this:
>>
>> Non-printable characters found.  Continue sending? (delete, replace, send, edit, ?): 
>
> After looking at something related but not the same, I ended up with:
>
>  ;; Do forward as MIME (the default), but don't show me the
>  ;; MML.
>  ;;
>  ;; Showing the MML causes decoding and recoding problems, where the
>  ;; headers of an message/rfc822 part end up being very long and
>  ;; opensmtpd decides to wrap them via QP encoding. Unfortunately it
>  ;; QP encodes the MIME separators as well. No idea who is actually in
>  ;; the wrong here, but this fixes it so far.
>  message-forward-as-mime t

I have that same setting here...

>  message-forward-show-mml nil

... but this is set to "best". Setting it to "nil" might solve some of
the problems I'm seeing (specifically with forwarding) but do note the
same problems occur when I reply to an email that has a patch with my
last name in it. For example this message construct will yield the same
error as described earlier because the attached patch has "Beaupré" in
it which will freak out message-mode (or whatever is going on here).

Content-Type: multipart/mixed;
	boundary="_004_eb33b55506b743279ad0320cb4a1f036XBOX01axiscom_"
MIME-Version: 1.0
--_004_eb33b55506b743279ad0320cb4a1f036XBOX01axiscom_
Content-Type: multipart/alternative;
	boundary="_000_eb33b55506b743279ad0320cb4a1f036XBOX01axiscom_"

--_000_eb33b55506b743279ad0320cb4a1f036XBOX01axiscom_
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

Salut Antoine,

[...]

--_000_eb33b55506b743279ad0320cb4a1f036XBOX01axiscom_
Content-Type: text/html; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

[...]
--_000_eb33b55506b743279ad0320cb4a1f036XBOX01axiscom_--

--_004_eb33b55506b743279ad0320cb4a1f036XBOX01axiscom_
Content-Type: application/octet-stream; name="CVE-2018-16864.patch"
Content-Description: CVE-2018-16864.patch
Content-Disposition: attachment; filename="CVE-2018-16864.patch"; size=1796;
	creation-date="Tue, 26 Feb 2019 13:23:19 GMT";
	modification-date="Tue, 26 Feb 2019 13:23:19 GMT"
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--_004_eb33b55506b743279ad0320cb4a1f036XBOX01axiscom_--

So it's not just forwarding, unfortunately.

A.

-- 
In god we trust, others pay cash.
                        - Richard Desjardins, Miami