diff -r 6e8582ccf76d -r a614f26d4897 mercurial/transaction.py
--- a/mercurial/transaction.py	Sat Oct 05 09:55:56 2019 -0400
+++ b/mercurial/transaction.py	Sat Oct 05 09:57:00 2019 -0400
@@ -333,8 +333,10 @@
 
             # for generation at closing, check if it's before or after finalize
             postfinalize = group == gengrouppostfinalize
-            if (group != gengroupall and
-                (id in postfinalizegenerators) != (postfinalize)):
+            if (
+                    group != gengroupall
+                    and (id in postfinalizegenerators) != postfinalize
+            ):
                 continue
 
             vfs = self._vfsmap[location]