So hold on to your socks... what about:
@x @y;
This reminds me of AWK's string concatenation behaviour:
print "this " $1 " that " $2
This was nice feature at the time, but caused problems down the track when they wanted to add functions to the language in a subsequent revision. See section 8.1 of The AWK Programming Language for more details.
For that reason alone (future-proofing the grammar), I would be leery of going down this route.
David
