>> An alternative is not to have such a variable but just to have an
>> option to collate according to the user's locale. Then the user
>> would run e.g. "LC_COLLATE=ll_LL.UTF-8 texi2any ..." to use
>> collation from the ll_LL.UTF-8 locale. They would have to have the
>> locale installed that was appropriate for whichever manual they
>> were processing (assuming the "variable weighting" option is
>> appropriate.)
>
> I do not like that possibility, I think that we should avoid using
> the user locales when it comes to document output in general.
+1
> 3) sorting based on @documentlanguage using, in perl
> Unicode::Collate::Locale with locale @documentlanguage and in C
> strxfrm_l with "@documentlanguage.utf-8" (at least on GNU/Linux,
> the locale name setup for strxfrm_l could be different on other
> platforms).
Sounds good.
Werner
