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    This is essentially what darkled's answer does, but in that answer you just flip one switch, rather than redefining multiple commands Commented Dec 8, 2018 at 11:40
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    Yes, the advantage of the present solution is avoiding the external dependency loaded from package ifthen. By the way, here is a similar thread and another variant of the solution: stackoverflow.com/questions/2043316/… Commented Dec 9, 2018 at 13:50