From damian@cs.monash.edu.au

Chaim wrote​:

  > >> Clearly want(undef) doesn't return undef, because that would
  > >> be false. So what does it return?
  >
  > DC> When called with arguments C<want> always returns true or false.
  > DC> Come to think of it, it's very unlikely anyone would want to call it
  > DC> without arguments, so let's just scrap that alternative.
  >
  > Unlikely?
  >
  > Your example, is a counter-example, it showed a great use. It debugs
  > the crypto context of a sub.

Good point. I've updated the proposal​:

  http​://www.csse.monash.edu.au/~damian/Perl/want.proposal

to reinstate that option.

Damian