to_char(OF) is broken

Folks,

In to_char(), the new-in-9.4 'OF' feature is straight-up broken, to
wit:

set timezone to 'America/Caracas'; select to_char(now(), 'OF');
SET
to_char
─────────
-04:-30
^OK ^NOT OK

Interestingly, in git master as of yesterday, it's broken in an
entirely different way:

set timezone to 'America/Caracas'; select to_char(now(), 'OF');
SET
to_char
─────────
-004:30
^ What's this extra zero doing here?
(1 row)

Fractional offset time zones should probably be in our regression test
suite for this feature.

Cheers,
David.
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter
Skype: davidfetter XMPP: david(dot)fetter(at)gmail(dot)com

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