diff -r 57b0c7221dba -r 3ea3c96ada54 mercurial/templatekw.py
--- a/mercurial/templatekw.py	Sun Apr 22 11:38:53 2018 +0900
+++ b/mercurial/templatekw.py	Sun Apr 23 13:15:30 2017 +0900
@@ -278,6 +278,8 @@
     if isinstance(s, encoding.localstr):
         # try hard to preserve utf-8 bytes
         return encoding.tolocal(encoding.fromlocal(s).strip())
+    elif isinstance(s, encoding.safelocalstr):
+        return encoding.safelocalstr(s.strip())
     else:
         return s.strip()