diff -r 752da6863e39 -r a65c60f3280e hgext/histedit.py
--- a/hgext/histedit.py	Thu Jun 25 11:22:34 2020 +0200
+++ b/hgext/histedit.py	Sun Jun 28 17:49:14 2020 +0200
@@ -201,6 +201,7 @@
     termios = None
 
 import functools
+import locale
 import os
 import struct
 
@@ -1710,6 +1711,10 @@
         ctxs = []
         for i, r in enumerate(revs):
             ctxs.append(histeditrule(ui, repo[r], i))
+        # Curses requires setting the locale or it will default to the C
+        # locale. This sets the locale to the user's default system
+        # locale.
+        locale.setlocale(locale.LC_ALL, '')
         rc = curses.wrapper(functools.partial(_chisteditmain, repo, ctxs))
         curses.echo()
         curses.endwin()