>> OK, no tailoring. I wasn't aware of those differences, thanks for
>> pointing me to it.
>>
>> Hopefully, we agree that `@documentlanguage` should set a
>> language-specific collation for the index.
>
> Without tailoring, this basically means collation according to
> Unicode codepoints.
Uh oh, this is not good. As an example, consider the letter 'ä'.
There are two possible collations that are considered as correct for
German:
* Sort 'ä' right before 'b'.
* Handle 'ä' similar to 'ae' but sort it after 'ae'.
Neither collation corresponds to Unicode codepoints.
Werner
