Andrew Shitov wrote:
TTS> BTW, you didn't mean originally:

TTS>    say zip (@odd), (@even); # prints 13572468 or 12345678?

That is exactly like with similar printing result of sub() call:

     print sqrt (16), 5; # shout print 45.

That all hinges on the type of the symbol. I guess &sqrt
is a unary prefix. Then

   print sqrt 16, 5; # should print 45 as well.

The point is, to not let &sqrt 'swallow' the 5 unless
it is declared listop.
$TSa.greeting := "HaloO"; # mind the echo!

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