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Currently, on all platforms except MSWin32, all system calls (e.g., us
+ing system() or back-ticks) made from threads use the environment var
+iable settings from the main thread. In other words, changes made to
+%ENV in a thread will not be visible in system calls made by that thr
system("FOO=$msg; echo \$FOO"); # Outputs 'hello' to STDOUT
On MSWin32, each thread maintains its own set of environment variables
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
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