six.u 4-byte unicode escaping fixed ('\U00000439')

1 files changed, 1 insertions, 1 deletions

diff --git a/six.py b/six.py
index 729ba7a..e4c0da4 100644
--- a/six.py
+++ b/six.py
@@ -469,7 +469,7 @@ else:
     def b(s):
         return s
     # Workaround for standalone backslash
-    _U = re.compile(r'\\(?!u)')
+    _U = re.compile(r'\\(?![uU])')
     def u(s):
         return unicode(_U.sub('\\u005C', s), "unicode_escape")
     unichr = unichr