in reply to Role::Tiny not behaving as expected

I've been bitten by the same problem recently, and documented my adventure here: Role Composition versus Inheritance. I also submitted a pull request to improve the documentation, which has already been accepted.
($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,