pg_get_serial_sequences still have problems with downcasting

http://archives.postgresql.org/pgsql-hackers/2004-10/msg00964.php

It is still true in 8.1.
Is it still true in >8.1?

Will something like that in a function be statically compiled or
computed every time?

_Basket_seq:= pg_get_serial_sequence('shop_commerce_baskets',
lower('BasketID'));

If not any way to make it static and avoid passing one more parameter
to the function?

thanks

--
Ivan Sergio Borgonovo
http://www.webthatworks.it