Re: Emacs unexpectedly deletes edited file

> From: John J. Xenakis <[email protected]>
> Date: Fri, 03 Jul 2015 11:44:13 -0400
> Cc: [email protected]
> 
> 1. Open file, setting coding system as follows:
>         (setq  save-buffer-coding-system 'windows-1252) ;; windows only
> 
> 2. Load a file containing \235 character.
> 
> 3. Modify file and type Ctrl-X Ctrl-S.
> 
> 4. Get error message buffer that begins: "These default coding systems 
>    were tried to encode text ..."
> 
> 5. Get minibuffer message: "Select coding system (default raw-text): "
> 
> 6. Decide you don't want to save, click "X" to close emacs.
> 
> 7. Discover that the entire file has been deleted (though a recovery
>    file was saved).

This is bug #13522.