pg_dump/restore syntax checking bug?

Hello,

In testing some pg_restore functionality I found the following:

postgres@jd-laptop:~$ pg_dump -U postgres -Fc -s --file=foo.sqlc
postgres@jd-laptop:~$ dropdb test;
postgres@jd-laptop:~$ createdb test;
postgres@jd-laptop:~$ pg_restore -d test -P 'by()' foo.sqlc
postgres@jd-laptop:~$ psql -U postgres test
psql (9.1.8)
Type "help" for help.

test=# select by();
  by
----
  by
(1 row)

test=# select hello();
ERROR:  function hello() does not exist
LINE 1: select hello();
                ^
HINT:  No function matches the given name and argument types. You might 
need to add explicit type casts.

----> The above is as expected.


test=# \q
postgres@jd-laptop:~$ pg_restore -d test -P 'by(),hello()' foo.sqlc
postgres@jd-laptop:~$ psql -U postgres test;
psql (9.1.8)
Type "help" for help.

test=# select hello();
ERROR:  function hello() does not exist
LINE 1: select hello();

----> This is where I am confused. It didn't restore hello() and it also 
didn't error that the syntax of the restore command was invalid.
                ^
test=# drop function by();
DROP FUNCTION
test=#
test=# q
test-# \q
postgres@jd-laptop:~$ pg_restore -d test -P 'by(),hello()' foo.sqlc
postgres@jd-laptop:~$ psql -U postgres test;
psql (9.1.8)
Type "help" for help.

test=# drop function by();
ERROR:  function by() does not exist

----> by() not restored by above command


test=# \q
postgres@jd-laptop:~$ pg_restore -d test -P 'by()','hello()' foo.sqlc
postgres@jd-laptop:~$ psql -U postgres test;
psql (9.1.8)
Type "help" for help.

test=# drop function by();
ERROR:  function by() does not exist
test=# select hello();
ERROR:  function hello() does not exist
LINE 1: select hello();
                ^
HINT:  No function matches the given name and argument types. You might 
need to add explicit type casts.

----> by() and hello() also not restored


test=# \q
postgres@jd-laptop:~$ pg_restore -d test -P 'by()' -P'hello()' foo.sqlc
postgres@jd-laptop:~$ psql -U postgres test;
psql (9.1.8)
Type "help" for help.

test=# select hello();
  hello
-------
  hello
(1 row)

test=# select by();
ERROR:  function by() does not exist
LINE 1: select by();

----> hello() restored but by() was not.


It appears we need better syntax checking.

Sincerely,

JD