[perl #131335] [BUG] The empty set should be a subset of any set

[Jan-Olof Hendig via RT]

On Sat, 20 May 2017 06:20:14 -0700, jan-olof.hen...@bredband.net wrote:
> On Sat, 20 May 2017 06:03:00 -0700, c...@zoffix.com wrote:
> > > The above should return True
> > 
> > WolframAlpha disagrees:
> > https://www.wolframalpha.com/input/?i=%E2%88%85+%E2%8A%82+%E2%88%85
> 
> Yup, this ticket should be closed/rejected.