diff -r 8d9d0d30cfcc -r b23ef2f06d98 mercurial/revset.py
--- a/mercurial/revset.py	Thu Jun 28 23:21:55 2018 +0530
+++ b/mercurial/revset.py	Sat Jun 16 23:12:41 2018 +0900
@@ -309,7 +309,6 @@
     Will return empty list when passed no args.
     Greatest common ancestor of a single changeset is that changeset.
     """
-    # i18n: "ancestor" is a keyword
     l = getlist(x)
     rl = fullreposet(repo)
     anc = None