> plain assignment will operate on lists, but modifying assignments (+= in the example that I recall) will not

If you really needed this, it could be done with a little syntactic sugar

something like

L($x,$y,$z) += L(1,2,3);

the trick would be to let L() ( for "list" ) return an object with overload ed operators (in scalar context) performing the side-effect

Tho I'm not sure if the RHS needs to be packed into an object too, but I assume += is imposing scalar context.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re: A list assignment gotcha by LanX
in thread Not understanding 2 sentences in perldoc by Anonymous Monk

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