bytea_ouput = escape vs encode(byte, 'escape')

I'm wondering why bytes_output = escape produces different output than encode(byte, 'escape') does. Is this intentional? If so, why?

cnuapp_prod(at)postgres=# select e'\r'::bytea AS cr, e'\n'::bytea AS lf;
cr | lf
------+------
\x0d | \x0a
(1 row)

cnuapp_prod(at)postgres=# set bytea_output = escape;
SET
cnuapp_prod(at)postgres=# select e'\r'::bytea AS cr, e'\n'::bytea AS lf;
cr | lf
------+------
\015 | \012
(1 row)

cnuapp_prod(at)postgres=# select encode(e'\r'::bytea,'escape') AS cr, encode(e'\n'::bytea, 'escape') AS lf;
cr | lf
----+----
\r | +
|
(1 row)

cnuapp_prod(at)postgres=#
--
Jim C. Nasby, Data Architect jim(at)nasby(dot)net
512.569.9461 (cell) http://jim.nasby.net