[perl #123808] [BUG] qqw{} and qqww{} flattening behaviour doesn't match

[jn...@jnthn.net via RT]

On Tue Nov 17 12:23:28 2015, coke wrote:
> Current situation:
> 
> 15:20 < jnthn> m: my $a = 42; say <<$a b c>>;
> 15:20 <+camelia> rakudo-moar 7c6a55: OUTPUT«(42 b c)␤»
> 15:21 < jnthn> m: my $a = 42; say qqww{$a b c};
> 15:21 <+camelia> rakudo-moar 7c6a55: OUTPUT«(42 b c)␤»
> 15:21 < jnthn> m: my $a = 42; say qqw{$a b c};
> 15:21 <+camelia> rakudo-moar 7c6a55: OUTPUT«[42 b c]␤»
> 
> 
> 15:21 < jnthn> m: my $a = 42; say .WHAT for <<$a b c>>, qqww{$a b c},
> qqw{$a b
>                c}
> 15:21 <+camelia> rakudo-moar 7c6a55: OUTPUT«(List)␤(List)␤(Array)␤»
> 15:22 < jnthn> [Coke]: Bit dubious that the last one is Array, not
> List too
> 15:22 < [Coke]> I'll add that to the ticket. Thanks.

Corrected that one that accidentally returned Array; tests in 
S02-literals/quoting.t.