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>perl -MO=Concise,-exec -e"(LIST_EXPR)[INDEX_EXPR]" 1 <0> enter ... 7 <2> lslice vK/2 8 <@> leave[1 ref] vKP/REFC -e syntax OK
>perl -MO=Concise,-exec -e"(split)[$x..$y]" 1 <0> enter ... c <2> lslice vK/2 d <@> leave[1 ref] vKP/REFC -e syntax OK