mitchellh/vagrant — pull request #3776 by agilebarbecue (2014-05-13 16:32:16+00:00)
Title: fix windows guest with puppet and a facter block

Powershell doesn't understand the unix-style ENV=thing command syntax, the old vagrant-windows plugin monkey patched the provisioner to put semicolons between statements to set the variables before running puppet - this fixes the issue inside a windows? block leaving the normal non-windows code path working - therefore works for me on both unix and windows provisions with a facter block in place