"Joshua D. Drake" <jd(at)commandprompt(dot)com> writes:
> Does this not seem a problem to you?
No. 8.2 is case-insensitive on timezone names, but prior releases were not.
I believe the difference you're seeing in 8.1 is that 'PST8PDT' binds to
the zic database entry by that name, while 'pst8pdt' falls back on the
POSIX-default rules, which are presumably still the old DST law.
regards, tom lane