bug#42644: 28.0.50; Please let max and min accept zero arguments

[Michael Heerdegen <michael_heerdegen@web.de>]

Hello to all,

> I want to suggest to make the functions `max' and `min' accept zero
> arguments
>
>   (max) => negative infinity
>   (min) => positive infinity

thanks for your comments.  More or less everyone seems to prefer the
introduction of constants instead.  I have no objections to solve my
"issue" (solely) in that way.  (And for `seq-min' and `seq-max' my
suggestion would also introduce the problem that the return value would
be undefinable if the given SEQUENCE is empty but a PREDICATE or KEY
function is specified).

Ok - how and where should we define such constant(s)?  I think I would
prefer Stefan's suggestion to introduce only one constant named
"infinity", for no strong reasons.

Thanks,

Michael.