Re: bug#14957: 24.3.50; Flyspell language visible in mode line

["Sebastien Vauban" <sva-news-D0wtAvR13HarG/iDocfnWg@public.gmane.org>]

Hello Michael,

Michael Heerdegen wrote:
>> (add-to-list 'mode-line-format ...)
>
> That's not good. `mode-line-format' "automatically becomes
> buffer-local when set" (see C-h v). Your `add-to-list' only
> manipulates the `mode-line-format' of the current buffer when your
> code is evaluated (*scratch*, probably).
>
> You have to modify the default value, like this:
>
> (setq-default mode-line-format
> 	      (cons
> 	       '(:eval
> 		 (let ((dict (and (featurep 'ispell)
> 				  (or ispell-local-dictionary
> 				      ispell-dictionary))))
> 		   (and dict
> 			(concat " ["
> 				(propertize (substring dict 0 2)
> 					    'face 'mode-line-highlight)
> 				"]"))))
> 	       (default-value 'mode-line-format)))
>
> Does that help?

It does and did.

Though, when opening some types of files (?) [1], I just observed that there is
an error message generated:

  ╭────
  │ File mode specification error: (wrong-type-argument buffer-or-string-p
  │ (:eval (let ((dict (and (featurep (quote ispell)) (not buffer-read-only)
  │ (or ispell-local-dictionary ispell-dictionary)))) (and dict (propertize
  │ (concat " " (substring dict 0 2)) (quote face) (quote
  │ mode-line-highlight))))))
  ╰────

I'm not sure what to understand from that... That `mode-line-format' must be
a string?  Hence, how do we put the `eval' stuff?

Best regards,
  Seb

[1] Opening a file with a `.csv' extension.

-- 
Sebastien Vauban