I may be missing something very obvious, but could someone step through this one step at a time?
The way I'm reading it, something like the below happens, and it doesn't make much sense to me.
Input: 2d4+10
Code: s/d/q(+~~rand($')+d)x$`/e;
2d4+10
2(q(+~~rand($')+d)x$`)4+10
2(q(+int(rand($'))+d)x$`)4+10
2(q(+int(rand(4+10))+d)x2)4+10
2('+int(rand(4+10))+d'x2)4+10
2('+int(rand(4+10))+d''+int(rand(4+10))+d')4+10
=?????
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