--- a/tests/test-histedit-fold.t	Mon Jun 26 11:15:30 2023 +0100
+++ b/tests/test-histedit-fold.t	Mon Jun 26 14:34:58 2023 +0200
@@ -236,7 +236,7 @@
 
   $ hg --config progress.debug=1 --debug \
   > histedit 1ddb6c90f2ee --commands - 2>&1 <<EOF | \
-  > egrep 'editing|unresolved'
+  > grep -E 'editing|unresolved'
   > pick 1ddb6c90f2ee e
   > fold 10c36dd37515 f
   > EOF