diff -r 2959c3e986e0 -r bd872f64a8ba hgext/show.py
--- a/hgext/show.py	Sat May 06 04:51:25 2017 +0530
+++ b/hgext/show.py	Fri Feb 10 16:56:29 2017 -0800
@@ -185,7 +185,7 @@
     # Add working directory parent.
     wdirrev = repo['.'].rev()
     if wdirrev != nullrev:
-        relevant += revset.baseset(set([wdirrev]))
+        relevant += revset.baseset({wdirrev})
 
     return subset & relevant