unexpected psql "feature"

Hello devs,

Although this is probably a "feature", it is a weird one:

$ psql
psql (9.6beta2)
fabien=# SELECT 1 AS one \;
fabien-# SELECT 2 AS two ;
two
-----
2
(1 row)

Where is my "1"?

Although "\;" behavior is not documented, I would have expected both
results to be shown one after the other, or having a an error, but not a
quiet discard.

My guess is that psql uses PQexec which just returns the last result.
Using PQsendQuery/PQgetResult would result in a much better behavior.

fabien=# CREATE TABLE foo(id TEXT);
CREATE TABLE
fabien=# INSERT INTO foo VALUES('calvin') \;
fabien-# INSERT INTO foo VALUES('hobbes') ;
INSERT 0 1
fabien=# SELECT * FROM foo;
id
--------
calvin
hobbes
(2 rows)

I would suggest that:
- the \; psql feature should be documented somewhere
- all results should be shown, not just the last one

Any opinion?

--
Fabien.