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  • This necessates having code written in a specialized manner. The subshell solution works with any code, including code that we can not modify. Commented Aug 7, 2019 at 6:33
  • @HappyFace What part of the code are you not able to modify? Also note that I'm not doing anything "special" here, and that the second piece of code is not very different from your own proposal. Commented Aug 7, 2019 at 6:34