[perl #116036] X and Z metaops flatten itemized hashes and arrays, should not

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# New Ticket Created by  Moritz Lenz 
# Please include the string:  [perl #116036]
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# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=116036 >


< moritz> nr: say <a b> X=> [];
<+p6eval> niecza v24-5-g599cbcb: OUTPUT«"a" => [] "b" => []␤»
<+p6eval> ..rakudo 53daef: OUTPUT«␤»

< moritz> nr: say <a b> Z=> [];
<+p6eval> niecza v24-5-g599cbcb: OUTPUT«"a" => []␤»
<+p6eval> ..rakudo 53daef: OUTPUT«␤»

In both cases, niecza is right and Rakudo is wrong -- it should treat [] 
(or {}, for that matter) as a single item, not as an empty flat list.

Cheers,
Moritz