in reply to use experimental 'autoderef'; ???

See also auto-deref in Syntax::Construct. It lists the construct as "removed" in 5.24, and it works correctly:
$ blead perl -MSyntax::Construct=auto-deref -e1 Faking version 5.028 to test removed constructs. auto-deref removed in 5.024 at -e line 0 at .../Syntax/Construct.pm li +ne 125. BEGIN failed--compilation aborted. [[err: 255]]

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,