diff -r b212e01fead0 -r 29c249dfb4ef mercurial/templater.py
--- a/mercurial/templater.py	Tue Mar 29 11:50:41 2016 -0700
+++ b/mercurial/templater.py	Sun Mar 27 17:42:19 2016 +0900
@@ -868,7 +868,7 @@
 
 def unquotestring(s):
     '''unwrap quotes if any; otherwise returns unmodified string'''
-    if len(s) < 2 or s[0] != s[-1]:
+    if len(s) < 2 or s[0] not in "'\"" or s[0] != s[-1]:
         return s
     return s[1:-1]