--- a/mercurial/crecord.py	Sat Mar 02 13:07:58 2019 -0800
+++ b/mercurial/crecord.py	Sat Mar 02 13:15:53 2019 -0800
@@ -30,7 +30,7 @@
 
 # This is required for ncurses to display non-ASCII characters in default user
 # locale encoding correctly.  --immerrr
-locale.setlocale(locale.LC_ALL, u'')
+locale.setlocale(locale.LC_ALL, r'')
 
 # patch comments based on the git one
 diffhelptext = _("""# To remove '-' lines, make them ' ' lines (context).