Re: auto-detect multiple languages -- ispell-detect.el

[Emanuel Berg <incal@dataswamp.org>]

Eli Zaretskii wrote:

>> (defun ispell-spell-all (&optional beg end)
>>   (interactive
>>     (when (use-region-p)
>>       (list (region-beginning)
>>             (region-end))))
>>   (or beg (setq beg (point)))
>>   (or end (setq end (point-max)))
>>   (cl-loop for (lang dict) in ispell-langs do
>>     (let* ((this (format "-->{%s}" lang))
>>            (all  "-->{[[:alpha:]]\\{2\\}}")
>>            (ispell-skip-region-alist
>>             `(,(list this)
>>               ,(list all (lambda ()
>>                            (unless (re-search-forward this nil t)
>>                              (goto-char end))))
>>               ,@ispell-skip-region-alist)))
>>       (unless (string= dict ispell-current-dictionary)
>>         (ispell-change-dictionary dict))
>>       (ispell-region beg end))))
>
> Looping through several languages and restarting the speller
> each time has the disadvantage that it is quite expensive,

3 languages, 3 spellchecks - so linear, that is, quite good.

> and will ask whether to save the local dictionary each time,
> which is a minor nuisance

(setq ispell-silently-savep t)

> And if one uses Hunspell one can set up the speller so that
> it spell-checks several languages in parallel

Okay, how?

> This has an advantage that different languages can be mixed
> in the same region, instead of separating them.

How does Hunspell know vad som är vilket språk if they
are intermixed?

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