From c919977018ed6855e94bcf32db89d69ac03d56cb Mon Sep 17 00:00:00 2001
From: Eric Kessler <morrow748@gmail.com>
Date: Tue, 5 Feb 2019 22:53:22 -0500
Subject: [PATCH] [Fix #6720] Detect OS more reliably

Using a different constant to determine the current operating system.
---
 lib/rubocop/platform.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/rubocop/platform.rb b/lib/rubocop/platform.rb
index ae5dcbd1f78..dfdc5146110 100644
--- a/lib/rubocop/platform.rb
+++ b/lib/rubocop/platform.rb
@@ -5,7 +5,7 @@ module RuboCop
   # on.
   module Platform
     def self.windows?
-      RUBY_PLATFORM =~ /cygwin|mswin|mingw|bccwin|wince|emx/
+      RbConfig::CONFIG['host_os'] =~ /cygwin|mswin|mingw|bccwin|wince|emx/
     end
   end
 end