diff -r 37b7581e5737 -r a57c938e7ac8 mercurial/commandserver.py
--- a/mercurial/commandserver.py	Mon Oct 02 19:25:11 2017 -0700
+++ b/mercurial/commandserver.py	Fri Sep 29 15:48:34 2017 +0000
@@ -272,8 +272,8 @@
 
         return cmd != ''
 
-    capabilities = {'runcommand'  : runcommand,
-                    'getencoding' : getencoding}
+    capabilities = {'runcommand': runcommand,
+                    'getencoding': getencoding}
 
     def serve(self):
         hellomsg = 'capabilities: ' + ' '.join(sorted(self.capabilities))