diff -r 64f4a6808704 -r 386c1e45e671 mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Sun Jan 21 13:47:06 2018 +0900
+++ b/mercurial/cmdutil.py	Sun Jan 21 14:28:03 2018 +0900
@@ -2501,7 +2501,7 @@
 def buildcommittemplate(repo, ctx, subs, extramsg, ref):
     ui = repo.ui
     spec = formatter.templatespec(ref, None, None)
-    t = logcmdutil.changesettemplater(ui, repo, spec, None, {}, False)
+    t = logcmdutil.changesettemplater(ui, repo, spec)
     t.t.cache.update((k, templater.unquotestring(v))
                      for k, v in repo.ui.configitems('committemplate'))