Issue #3215 has been updated by Jon Forums.


When using the mingw v3.4.5 built 1.9.1p378 from http://rubyinstaller.org/ the example snippet also works for me (Win7 Ultimate 32-bit) as well as the IO.popen code from the following patch I use with Jekyll

http://github.com/jonforums/jekyll/commit/237b8ebe1defdee92afc5dc146a4d89058a16c37 
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http://redmine.ruby-lang.org/issues/show/3215

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