diff -r 3460eee570f7 -r ff615b6b5b8f mercurial/crecord.py
--- a/mercurial/crecord.py	Thu Oct 10 10:53:13 2019 +0200
+++ b/mercurial/crecord.py	Thu Oct 10 12:20:23 2019 +0200
@@ -678,9 +678,6 @@
         # (used for determining when the selected item begins/ends)
         self.linesprintedtopadsofar = 0
 
-        # the first line of the pad which is visible on the screen
-        self.firstlineofpadtoprint = 0
-
         # stores optional text for a commit comment provided by the user
         self.commenttext = b""