Suggestion for new function on pg_catalog: get_config()

Hi all,

I want to suggest a inclusion of an new function on the pg_catalog.
Since we have set_config(text, text, boolean)
can we have an get_config( text ) ?

I research and find an internal function that do it, we only don't have
an call for it.
I think that can be like bellow (I don't know if the function can be
STATIC or strict)

CREATE OR REPLACE FUNCTION get_config(text)
  RETURNS SETOF text AS
'show_config_by_name'
  LANGUAGE 'internal' VOLATILE;


TIA.

--
Luiz K. Matsumura
Plan IT Tecnologia Informática Ltda.