BUG #5143: psql \df doesn't recogize patterns

The following bug has been logged online:

Bug reference:      5143
Logged by:          Piotr Wolinski
Email address:      pwolinski@dfqs.pl
PostgreSQL version: 8.4.1
Operating system:   PLD Linux 2.6.21.1 x86_64
Description:        psql \df doesn't recogize patterns
Details:

It looks like pqsl \df command doesn't recognize regexp pattern.

Works fine:
\df public.*
\df p*c.*
\dt (public|my_schema).*

Returns 0 rows:
\df (public|my_schema).*
\df (public).*