bug#20581: 24.5; aspell dictionary de-alt not found

[Eli Zaretskii]

> From: "Felix E. Klee" <felix.klee@inka.de>
> Date: Fri, 15 May 2015 10:42:12 +0100
> Cc: 20581@debbugs.gnu.org
> 
> I had a brief look at `ispell.el` yesterday. On a system with `aspell`,
> the variable `ispell-dictionary-alist` gets built based on the output of
> `aspell dicts`. On my system this list includes `de-alt`:
> 
>     $ aspell dicts | grep de
>     de-alt
>     de_AT
>     de_AT
>     de_CH
>     de_CH
>     de_DE
>     de_DE

So could you please step in Edebug through the code in ispell.el that
does the above, and see why the code doesn't DTRT?  (I don't have
Aspell installed to try that myself.)

Thanks.