Should IS DISTINCT FROM work with ANY()?

Howdy,

Shouldn't this work?
  postgres=# SELECT 'foo' IS DISTINCT FROM ANY(ARRAY['foo']);  ERROR:  syntax error at or near "ANY"  LINE 1: SELECT
'foo'IS DISTINCT FROM ANY(ARRAY['foo']);
 

Seems to me that IS DISTINCT FROM is just another operator, like =,  
and so it should work with ANUY(), no?

Tested on 8.2 and 8.3.

Thanks,

David