[Proposal] Make toLowerCase and toUpperCase based on Locale.ROOT by default

[Alan Bateman]

On 27/01/2023 05:42, Glavo wrote:
> I analyzed the usage of toLowerCase and toUpperCase in OpenJDK more 
> carefully,
>  and found that none of the use cases really expected locale-sensitive 
> behavior

I expected that as there were a number of passes over these use-sites 
over the years. That said, if some of the remaining usages can be 
changed to specify the locale then it would avoid others puzzling over 
them too. Changing them probably needs careful review so changing them 
in specific areas or in smaller batches would make it easier for 
potential Reviewers.

In any case, I agree with Rémi that changing the existing methods is too 
subtle and maybe it's time to look at no-arg replacements.

-Alan