My point is that it should not even exist as it's uses are quite marginal, and it's very easy to go wrong with it. If it really be needed, one can always do so

My point is that it should not even exist as it's uses are quite marginal, and it's very easy to go wrong with it. If it really be needed, one can always do something such as: exec(['/bin/sh', '-c', "curl ${line}"])