BUG #1494: psql \df to_char

The following bug has been logged online:

Bug reference:      1494
Logged by:          Ludwig Lim
Email address:      ludz_lim@yahoo.com
PostgreSQL version: 8.0.1
Operating system:   Linux
Description:        psql \df to_char
Details:

Hi:

  I notice that when I type \df to_char in psql prompt the following does
not appear as one of the possible arguments of to_char:

     time without time zone,text

However, the following select statement works:

   SELECT to_char(current_time :: 'time without time zone', 'ss');

   Is this a bug?

Version of PostgreSQL:
   PostgreSQL 8.0.1 on i686-pc-linux-gnu compiled by GCC 2.96

Thanks in advance,
Ludwig Lim