small logic error

setuptools/svn_utils.py

@@ -93,7 +93,7 @@ def determine_console_encoding():
     #olders pythons defaulted to this
     is_osx = sys.platform == "darwin"
     if not encoding:
-        return ["utf-8", "US-ASCII"][is_osx]
+        return ["US-ASCII", "utf-8"][is_osx]
     elif encoding.startswith("mac-") and is_osx:
         #certain version of pythons would return mac-roman as default
         #OSX as a left over of earlier mac versions.