diff -r 6ef17697b03d -r c57ebef70f6f mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Sun Nov 22 14:10:48 2015 -0800
+++ b/mercurial/cmdutil.py	Sun Nov 22 14:13:25 2015 -0800
@@ -1186,7 +1186,7 @@
 
     def show(self, ctx, copies=None, matchfn=None, **props):
         if self.buffered:
-            self.ui.pushbuffer()
+            self.ui.pushbuffer(labeled=True)
             self._show(ctx, copies, matchfn, props)
             self.hunk[ctx.rev()] = self.ui.popbuffer(labeled=True)
         else: