The challenge with this gem is that it can work on that newer version, but is it also safe? I haven't had a look yet at how users could break out of their jails in the newer version(s).

The challenge with this gem is that it can work on that newer version, but is it also safe? I haven't had a look yet at how users could break out of their jails in the newer version(s).

This library uses RubyParser and Ruby2Ruby to get the code into something executable. But this transformation does not change just because we run on a newer Ruby itself. So the behavior of this transformation should be unchanged.

Except of course if those packages enable some version specific stuff. RubyParser can try to find a matching parser for the current running Ruby version, but this does not seem to be used.