That does indeed look wrong to me, investigating
> On 23 Mar 2018, at 15:04, Nick Wellnhofer (via RT) > <perl6-bugs-follo...@perl.org> wrote: > > # New Ticket Created by Nick Wellnhofer > # Please include the string: [perl #133016] > # in the subject line of all future correspondence about this issue. > # <URL: https://rt.perl.org/Ticket/Display.html?id=133016 > > > > I get an unexpected result when subtracting a List from a Bag with the set > difference operator (-). Subtracting Bags from Lists or Bags works fine, as > does the baggy addition operator: > > say bag(<a b>) (+) bag(<a a>); # Bag(a(3), b) > say bag(<a b>) (+) <a a>; # Bag(a(3), b) > say <a b> (+) bag(<a a>); # Bag(a(3), b) > > say bag(<a a a b>) (-) bag(<a a>); # Bag(a, b) > say bag(<a a a b>) (-) <a a>; # Bag(a(2), b) seems wrong > say <a a a b> (-) bag(<a a>); # Bag(a, b) > > Only tested online on tio.run > > Rakudo version 2017.12 built on MoarVM version 2017.12 > implementing Perl 6.c. > > and code-golf.io: > > Rakudo version 2018.03 built on MoarVM version 2018.03 > implementing Perl 6.c > > Nick
