I haven't looked at the code recently, but I don't think so. The name of a lexical IS available.
>perl -MO=Concise,-exec -e"my $x; print $x"
1 <0> enter
2 <;> nextstate(main 1 -e:1) v:{
3 <0> padsv[$x:1,2] vM/LVINTRO <----
4 <;> nextstate(main 2 -e:1) v:{
5 <0> pushmark s
6 <0> padsv[$x:1,2] l <----
7 <@> print vK
8 <@> leave[1 ref] vKP/REFC
-e syntax OK
And yes, PadWalker is not distributed with Perl.
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