BUG #4944: Problems with using \set variables as strings in select statements

The following bug has been logged online:

Bug reference: 4944
Logged by: Bruno Scovoli Santos
Email address: bruno(dot)scovoli(at)gmail(dot)com
PostgreSQL version: 8.3.7
Operating system: Ubuntu 9.04 Jaunty Jackalope
Description: Problems with using \set variables as strings in select
statements
Details:

I hava a table as follows:

euclidhardware=# select * from fabricantes;
id_fabricante | nome | distribuidor | descricao
---------------+-----------+----------------------+-----------
1 | Genius | Atera informática | -
2 | Logitech | Atera informática | -
3 | Epson | Kalunga | -
4 | HP | Kalunga | -
5 | Lexmark | Kalunga | -
6 | Gigabyte | IMICROS | -
7 | ASUS | IMICROS | -
8 | ABIT | IMICROS | -
9 | AMD | IMICROS | -
11 | Intel | Balao da informática | -
12 | Kingston | Balao da informática | -
13 | Corsair | IMICROS | -
14 | Smartdata | ShopInfo | -
299 | ashhj | 78hkj | 8jhkljk

When I do:

brunodb=# \set fab 11
brunodb=# select * from fabricantes where id_fabricante = :fab;
id_fabricante | nome | distribuidor | descricao
---------------+-------+----------------------+-----------
11 | Intel | Balao da informática | -

OK, I get the right result. But it's seems that there is a bug for this:

brunodb=# \set nom 'Intel'
euclidhardware=# select * from fabricantes where nome like :nom;
ERROR: column "intel" does not exist
LINE 1: select * from fabricantes where nome like Intel;

Please, I have tried exaustively many other ways to achieve this result, and
searched many foruns. I dont realize where is my error, I think that it is a
bug?

Thanks in advance,

Bruno