BUG: trouble with forwarding with accents

[David Edmondson]

On Fri, Feb 05 2016, Antoine Beaupré wrote:
> So I have an accent in my family name, as you can see from the From
> header here. This has a tendency of finding the greatest and finest
> UTF-8 bug, and often no one believes me because they don't have that
> interesting property.
>
> Notmuch has been bugging me with such a problem for ages now. When I
> forward a mail, the accents in my name (or in the signature inserted)
> are broken.

I tried to reproduce this (by modifying my name in .notmuch-config to
include an accented character and then forwarding your mail), but
everything worked fine (on "GNU Emacs 24.5.1 (x86_64-apple-darwin15.0.0,
NS apple-appkit-1404.11) of 2015-10-05 on heart-of-gold").

It's tempting to ask whether or not you have any localisation or
language settings in either your shell or emacs, but I probably wouldn't
know how to interpret them even if so :-/

> (Interstingly, I haven't *actually* been bothered by that
> bug for a while because I was using Emacs through an SSH console. Now,
> I'm using Emacs within a X11 terminal instead, "GNU Emacs 24.4.1
> (x86_64-pc-linux-gnu, GTK+ Version 3.14.5) of 2015-03-07 on trouble,
> modified by Debian".)
>
> Interestingly, piping that buffer into patebinit doesn't yield any errors:
>
> http://paste.debian.net/378776/
>
> Yet there is clearly an issue while writing the buffer, as you can see
> on this screenshot:
>
> http://paste.anarc.at/snap-2016.02.05-17.28.30.png
>
> Look at the buffer on the bottom: my accent (a é) is all busted
> in the From line, even though it is perfectly fine in *this* buffer. If
> I try to send that message (say to the `devnull` recipient), I get a
> nasty warning:
>
> ```
> These default coding systems were tried to encode text
> in the buffer `1454711375.18796_680127_47.angela':
>   (utf-8-unix (21 . 4194243) (22 . 4194217))
> However, each of them encountered characters it couldn't encode:
>   utf-8-unix cannot encode these: \303 \251
>
> Click on a character (or switch to this window by `C-x o'
> and select the characters by RET) to jump to the place it appears,
> where `C-u C-x =' will give information about it.
>
> Select one of the safe coding systems listed below,
> or cancel the writing with C-g and edit the buffer
>    to remove or modify the problematic characters,
> or specify any other coding system (and risk losing
>    the problematic characters).
>
>   raw-text no-conversion
> ```
>
> (Note that I rewrote the actual escape characters above to avoid to be
> "backslash number number number" instead of the actual escape sequence
> to avoid trouble, as I am sending this through emacs as well.)
>
> I usually [PLOKTA][1] my way through that warning, but I have no idea if
> the recipient receives something that is jumbled up or not. Besides,
> PLOKTA is not fun, I just feel like I look like this:
>
> http://i1.kym-cdn.com/photos/images/original/000/234/765/b7e.jpg
>
>  [1]: https://en.wikipedia.org/wiki/PLOKTA
>
> This sure smells like double-encoding. Is this notmuch's fault or
> message-mode, and how can i fix this stuff?
>
> This is notmuch 0.18 in Debian jessie.
>
> Thanks for any advice,
>
> A.
>
> -- 
> Code is law.
>                          - Lawrence Lessig
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