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$ perl -MO=Concise -e'1+1' 3 <@> leave[1 ref] vKP/REFC ->(end) 1 <0> enter ->2 2 <;> nextstate(main 1 -e:1) v:{ ->3 - <0> ex-const v ->3
$ perl -MO=Concise -e'$a=1+$a' 8 <@> leave[1 ref] vKP/REFC ->(end) ... 4 <$> gvsv(*a) s ->5 - <1> ex-rv2sv sKRM*/1 ->7 6 <$> gvsv(*a) s ->7