problem with regexp (cant quote +)

postgres 7.3.2:

I wonder why the following expression fails. I came to this wondering why I
could not search for + using the '~'-operator.

select 'ok' where 'H+H'~'H\+H';

thnx,
peter

--
IT-Consulting
mag. peter pilsl
tel:+43-699-1-3574035
fax:+43-699-4-3574035
pilsl(at)goldfisch(dot)at
http://www.goldfisch.at