On 19 December 2016 at 16:23, Eli Zaretskii <eliz@gnu.org> wrote:

>
> You are assuming that [[:alpha:]] and [A-Za-z] are identical.


​No, because my patch does not change the current behaviour of the code.
The assumption that [:alpha:] is OK to use here instead of A-Za-z is
already in the code.​

IOW, I don't think this patch is in the right direction.
>

​From the conversation on other bugs, I think that the correct thing to do
here is to remove the first part of my patch (so that the hardwired
dictionaries keep their individual casechars and not-casechars settings),
and keep the second part of the patch (so that
ispell-set-spellchecker-params does not change them all to [:alpha:].

Does that sound plausible? If so, I'll prepare a modified patch for your
consideration.

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