Composing in utf8 from latin1 terminal

Ian Zimmerman itz at very.loosely.org
Wed Oct 24 20:44:24 UTC 2018


On 2018-10-23 22:31, Nuno Silva wrote:

> So far I did not find a way to change this on the mutt side, but I made
> a new major mode for mutt messages in Emacs (the editor I use with
> mutt), with a hook that changes the file encoding to latin1 if the file
> was opened in a latin1 terminal and Emacs cannot detect a non-ASCII file
> encoding.
> 
> It appears to work here. I'm sure someone who is more versed in Emacs
> than me would be able to come up with a more elegant solution, but I'm
> sharing mine here just in case it is useful to somebody else someday:
> 
> (define-derived-mode my-mutt-message-mode message-mode "MuttMSG")
> (add-hook
>  'my-mutt-message-mode-hook
>  (lambda ()
>    (when (equal (terminal-coding-system) 'iso-latin-1-unix)
>      (let ((encoding (detect-coding-region (point-min) (point-max))))
>        (when (or
>               (equal encoding '(undecided-unix))
>               (equal encoding '(undecided)))
>          (setq buffer-file-coding-system 'iso-latin-1-unix))))))
> (add-to-list 'auto-mode-alist '("/mutt" . my-mutt-message-mode))

You could just hook message-mode-hook with a function that checks
buffer-file-name,  I think that would be a bit more straightforward than
adding a new mode.

Other possibilities: you could handle this still in Emacs, but after you
finish writing, at the point you save the temporary file (with one of
the write hooks).  Or you can write a script that runs Emacs and then
recodes the file outside of Emacs, using something like iconv(1).

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