Le 07/11/2014 14:46, Eli Zaretskii a écrit :
> To cause it to be incorrectly decoded, you could do this:
> 
>   C-x RET c raw-text RET C-x C-f FILENAME RET
> 
> If you remember which encoding Emacs decided to use, try that instead
> of raw-text.

Thanks to your help, it was in fact very easy to reproduce :
the trick is the use raw-text-unix as encoding. Here's the full recipe :

emacs -Q
C-x RET c raw-text-unix
C-x C-f <attached file>
M-x org-mode
M-x revert-buffer RET and confirm.

boom.

Nicolas.