rspec/rspec-support — pull request #109 by scarcher2 (2014-09-08 05:14:04+00:00)
Title: Updated DirectoryMaker to properly generate and create directories on windows.

My Initial fix did not cover jruby on windows and was not adequate.

https://github.com/rspec/rspec-support/issues/107

unfortunately this is more complicated, but without a way to check specifically for OS rather than just RUBY_PLATFORM this is the best I've got.