--- a/rakelib/hglib.rb	Fri Nov 04 00:22:47 2016 +0000
+++ b/rakelib/hglib.rb	Mon Nov 14 22:32:36 2016 +0000
@@ -20,7 +20,7 @@
 end
 
 if not $LOGGER then
-  if STDOUT.tty? then
+  if STDOUT.tty? or win32? then
     require 'logger'
     $LOGGER = Logger.new(STDOUT)
     $LOGGER.level = Logger::INFO