[perl #125796] Extra empty line returned by lines()

[via RT]

# New Ticket Created by  Rob Hoelz 
# Please include the string:  [perl #125796]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=125796 >


For example:

    my $p     = shell 'yes | head', :out;
    my @lines = $p.out.lines;
    ok all(@lines) eq 'y'; # fails

See also 
http://blogs.perl.org/users/aaron_baugher/2015/08/mystery-line-in-proc-input-in-perl-6.html