diff -r df82f375fa00 -r 37a0ad669051 tests/test-update-names.t
--- a/tests/test-update-names.t	Tue Mar 21 23:30:13 2017 +0100
+++ b/tests/test-update-names.t	Tue Mar 21 21:26:52 2017 -0700
@@ -104,3 +104,5 @@
   [255]
   $ hg up .
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ HGPLAIN=1 hg up
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved