--- a/tests/test-command-template.t	Sun Feb 25 12:50:30 2018 +0900
+++ b/tests/test-command-template.t	Sun Feb 25 13:24:35 2018 +0900
@@ -214,6 +214,8 @@
   abort: template resource not available: ctx
   [255]
 
+  $ hg config -T '{author}'
+
 Quoting for ui.logtemplate
 
   $ hg tip --config "ui.logtemplate={rev}\n"