"David G. Johnston" <david.g.johnston@gmail.com> writes:
> On Fri, Apr 17, 2020 at 4:04 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Especially not for unary operators, where
>> ALTER OPERATOR would have us write "- (NONE, integer)".
> I'd drop the parens for unary and just write "- integer"
We do have some postfix operators still ... although it looks like
there's only one in core. In any case, the signature line is *the*
thing that is supposed to specify what the syntax is, so I'm not
too pleased with using an ambiguous notation for it.
regards, tom lane