--- a/tests/test-histedit-obsolete.t	Thu Oct 05 00:48:44 2017 +0000
+++ b/tests/test-histedit-obsolete.t	Thu Oct 05 21:56:25 2017 +0000
@@ -132,6 +132,7 @@
   #  e, edit = use commit, but stop for amending
   #  m, mess = edit commit message without changing commit content
   #  p, pick = use commit
+  #  b, base = checkout changeset and apply further changesets from there
   #  d, drop = remove commit from history
   #  f, fold = use commit, but combine it with the one above
   #  r, roll = like fold, but discard this commit's description and date