BUG #1328: psql don't accept some valid PGCLIENTENCODING values

The following bug has been logged online:

Bug reference: 1328
Logged by: kaaos

Email address: kaaos(at)land(dot)ru

PostgreSQL version: 8.0 Beta

Operating system: Linux kaaos 2.6.9 #3 Tue Nov 23 13:12:08 MSK 2004 i686
Intel(R) Celeron(R) CPU 1.70GHz GenuineIntel GNU/Linux

Description: psql don't accept some valid PGCLIENTENCODING values

Details:

Hello!
First of all, sorry for my English :(.

The problem:
With PGCLIENTENCODING=KOI8 and server encoding UNICODE
psql do not starts and print this message:

psql: FATAL: invalid value for parameter "client_encoding": "KOI8"

But, if I unset PGCLIENTENCODING, and in psql enter:

template1=# \encoding KOI8

then psql accept client encoding:

template1=# \encoding
KOI8

template1=# show client_encoding;
client_encoding
-----------------
KOI8
(1 row)

'select version()' output: PostgreSQL 8.0.0beta5
on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.4.3

Thank you.