Well, but system() and `...` aren't running in a new thread, they're forking off a new process. How would that be related to the threading model?

The only way I can see this happening is that perl doesn't use setenv() if a certain threading model is enabled, similar to what's been described here.

In reply to Re^2: %ENV setting not exported to child process? by saintmike
in thread %ENV setting not exported to child process? by saintmike

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