ARRAY[] with \'s is broken?

Can anyone explain what's going on with the slashes?

ssdb=# select version();
version
---------------------------------------------------------------------------
PostgreSQL 8.0.1 on sparc-sun-solaris2.9, compiled by GCC gcc (GCC)
3.4.2
(1 row)

ssdb=# select ARRAY['\\a'];
array
---------
{"\\a"}
(1 row)

ssdb=# select ARRAY['\a'];
array
-------
{a}
(1 row)

ssdb=# select ARRAY['\\\a'];
array
---------
{"\\a"}
(1 row)

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