>> I'm afraid compatibility breakage. mame-san said:
>
> Maybe I wasn't clear.  I think we should leave Thread#[] behavior as-is.
> We can add new methods for accessing thread locals.  This will maintain
> backwards compatibility and give us the new functionality.

Ah, ok. It doesn't have compatibility issue. The last problem is Thread#[] and
Thread#set_local are very likely confusing. I'd like to wait and see
other developer's
opinion. :)



> I attached a patch to this issue to show what I mean. :-)