--- a/tests/test-help.t	Tue Jul 31 19:37:48 2018 +0200
+++ b/tests/test-help.t	Tue Jul 31 19:37:54 2018 +0200
@@ -966,6 +966,9 @@
    debuginstall  test Mercurial installation
    debugknown    test whether node ids are known to a repo
    debuglocks    show or modify state of locks
+   debugmanifestfulltextcache
+                 show, clear or amend the contents of the manifest fulltext
+                 cache
    debugmergestate
                  print merge state
    debugnamecomplete