From 0874d4a77ae836d18138ef1b12a3f8235806b137 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Sat, 6 Apr 2013 16:07:20 -0700
Subject: [PATCH] Assume Cygwin has a TTY for input [GH-1430]

---
 CHANGELOG.md      | 1 +
 lib/vagrant/ui.rb | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64de811a4..14405c7b8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -49,6 +49,7 @@ BUG FIXES:
     that is also in use.
   - Cygwin will always output color by default. Specify `--no-color` to
     override this.
+  - Assume Cygwin has a TTY for asking for input. [GH-1430]
 
 ## 1.1.6 (April 3, 2013)
 
diff --git a/lib/vagrant/ui.rb b/lib/vagrant/ui.rb
index 5f70f38d0..c59be28e6 100644
--- a/lib/vagrant/ui.rb
+++ b/lib/vagrant/ui.rb
@@ -2,6 +2,7 @@ require "thread"
 
 require "log4r"
 
+require "vagrant/util/platform"
 require "vagrant/util/safe_puts"
 
 module Vagrant
@@ -77,7 +78,7 @@ module Vagrant
         super(message)
 
         # We can't ask questions when the output isn't a TTY.
-        raise Errors::UIExpectsTTY if !$stdin.tty?
+        raise Errors::UIExpectsTTY if !$stdin.tty? && !Vagrant::Util::Platform.cygwin?
 
         # Setup the options so that the new line is suppressed
         opts ||= {}