in reply to Re^4: Matching backslash in regexp negative lookbehind
in thread Matching backslash in regexp negative lookbehind

> with what Perl version

5.26

($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,