--- a/mercurial/rcutil.py	Tue Apr 25 22:10:26 2017 -0400
+++ b/mercurial/rcutil.py	Fri Apr 28 20:51:14 2017 +0900
@@ -21,6 +21,7 @@
 else:
     from . import scmposix as scmplatform
 
+fallbackpager = scmplatform.fallbackpager
 systemrcpath = scmplatform.systemrcpath
 userrcpath = scmplatform.userrcpath