tzset and TZ

[Pierre A. Humblet]

On Cygwin calling tzset() and localtime() will set TZ in
the environment (if it isn't set), while calling tzsetwall() 
will always set TZ.

As far as I can tell this is both non standard and unnecessary.
Am I wrong? Is it now a feature? Or is it "patch gratefully
accepted"?   

Pierre


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