t/smoke.t fails on windows about env-c HOT 4 OPEN

Thanks. I'll try to take a look at this soon. Which perl are you using under windows?

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Thanks. I am using 5.20 under windows.

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There are actually several issues with t/smoke.t. If you look at a test log like http://www.cpantesters.org/cpan/report/349d306f-6bf5-1014-ac60-f77ec8149ebf, there are 3 failures:

• The first failure is because it cannot unset root. On Windows there is not USER variable so the test file creates like USER=root, but it failed at unsetting it.
• The second failure shows that there are 2 more env variables in %ENV than what's from Env::C.
• The third failure is the case issue mentioned by @zhouzhen1 .

Actually the thing on Windows is a mess because Windows has two sets of APIs get/putenv, Get/SetEnvironmentVariable, and they don't share the same piece of data about env variables. I don't know very deep in this, but I believe the first and the second failure are because of this.

I don't think we have to fix the whole things on Windows unless someone's really needing it, as the library was originally designed for the POSIX get/put/unsetenv APIs, and Windows get/putenv is like a stupid mimic of the POSIX APIs. But at least we can put a CAVEATS section in the pod so people can see the issues on Windows.

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@stphnlyd thanks so much for taking the time to look into this.

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