BUG #3835: TZ doesn't work

The following bug has been logged online:

Bug reference: 3835
Logged by: Leonid Rozenblyum
Email address: leokom(at)rambler(dot)ru
PostgreSQL version: 8.0.14
Operating system: Linux
Description: TZ doesn't work
Details:

I need to convert string with timezone into timestamp with timezone. Example
from docs without timezone works OK:

Code: Select all
SELECT to_timestamp(
'05 JAN 2000+00',
'DD MON YYYY'
)

According to the specification I've tries to convert the string like:

Code: Select all
select to_timestamp( '05 Dec 2000 00:00 UTC', 'DD Mon YYYY HH24:MI TZ'
)

or

Code: Select all
select to_timestamp( 12 Jan 2000 04:00 -05', 'DD Mon YYYY HH24:MI TZ' )

but received an error:
ERROR: "TZ"/"tz" not supported

Documentation for my postgre version says that TZ is supported.

Is this a bug in postgre or in docs?