Deparse ()[()]

Deparse ()[()]

A pushmark doesn’t have to have a sibling:

$ ./perl -Ilib -MO=Concise -e '()[()]'
6  <@> leave[1 ref] vKP/REFC ->(end)
1     <0> enter ->2
2     <;> nextstate(main 1 -e:1) v:{ ->3
5     <2> lslice vK/2 ->6
-        <1> ex-list lK ->4
3           <0> pushmark s ->4
-           <0> stub lP ->-
-        <1> ex-list lK ->5
4           <0> pushmark s ->5            <-- look here!
-e syntax OK