Small parser bug?

Should the parser not croak?

test=# select TIME '12:34:56.1.2.1.2.aaa a;foo';?column?
----------12:34:56
(1 row)

like this

test=# select TIME '12:34:56.1.a.2';
ERROR:  Bad time external representation '12:34:56.1.a.2'
   --- Allan.