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Jehan authored
setenv() does not behave well on some systems, in particular OSX (and probably some BSDs), when the set value is NULL. In this case, let's unsetenv() the environment variable instead.
aa67bec9
setenv() does not behave well on some systems, in particular OSX (and probably some BSDs), when the set value is NULL. In this case, let's unsetenv() the environment variable instead.