On Sun, 2013-03-03 at 10:42 -0500, Tom Lane wrote:
> I think the use of str_toupper() is appropriate when processing the
> locale-specific string for a TMDAY specification; but plain DAY is not
> supposed to be locale-dependent, so we probably should use an
> ASCII-only upcasing rule in the non-TM code path.
Agreed.
> Anybody have an opinion on whether to back-patch such a fix?
I think it's a bug that should be backpatched.