diff -r 6ce89165eaa0 -r 54849b65dc5f mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Thu Jun 10 10:53:43 2021 -0700
+++ b/mercurial/cmdutil.py	Thu Jun 10 14:25:16 2021 -0700
@@ -328,10 +328,10 @@
     return datemaydiffer
 
 
-def checknotesize(ui, opts):
+def check_note_size(opts):
     """make sure note is of valid format"""
 
-    note = opts.get(b'note')
+    note = opts.get('note')
     if not note:
         return