bug#13460: Issue to change dictionary when using hunspell on emacs

[Eli Zaretskii]

> Date: Thu, 17 Jan 2013 13:26:31 +0100
> From: Agustin Martin <agustin.martin@hispalinux.es>
> 
> > Ie ispell-set-spellchecker-params should handle hunspell as it currently
> > does aspell, which has its own ispell-find-aspell-dictionaries func.
> 
> The problem is that hunspell -D does not return control.

Right.  But perhaps ispell.el could kill hunspell once it has read the
list of dictionaries.

> A workaround was proposed (redirecting from /dev/null), but it seems too
> UNIX biassed.

We could use 'null-device', which is portable.

> There is also an associated problem when hunspell does not find the requested
> dictionary under Emacs, because it does not triger an explicit error.

Right, but we should always find the dictionary ;-)