>> However, that would not diminish nor change much the amount and kind of
>> code necessary to add an operator or a function
>
> That's not really true. You can't really add abs(x) or hash(x) right
> now because the current code only supports this syntax:
>
> \set varname operand1 [ operator operand2 ]
>
> There's no way to add support for a unary operator with that syntax.
Hmmm. If you accept a postfix syntax, there is:-)
But this is not convincing. Adding a unary function with a clean syntax
indeed requires doing something with the parser.
--
Fabien.
