--- a/tests/test-subrepo-deep-nested-change.t	Mon Jun 26 11:15:30 2023 +0100
+++ b/tests/test-subrepo-deep-nested-change.t	Mon Jun 26 14:34:58 2023 +0200
@@ -396,7 +396,7 @@
   archiving (sub1/sub2) [==============>                ] 1/2\r (no-eol) (esc)
   archiving (sub1/sub2) [==============================>] 2/2\r (no-eol) (esc)
                                                               \r (no-eol) (esc)
-  $ diff -r . ../wdir | egrep -v '\.hg$|^Common subdirectories:'
+  $ diff -r . ../wdir | grep -E -v '\.hg$|^Common subdirectories:'
   Only in ../wdir: .hg_archival.txt
 
   $ find ../wdir -type f | sort
@@ -815,7 +815,7 @@
   $ hg add sub1/sub2
 
   $ hg archive -S -r 'wdir()' ../wdir2
-  $ diff -r . ../wdir2 | egrep -v '\.hg$|^Common subdirectories:'
+  $ diff -r . ../wdir2 | grep -E -v '\.hg$|^Common subdirectories:'
   Only in ../wdir2: .hg_archival.txt
   Only in .: .hglf
   Only in .: foo
@@ -854,7 +854,7 @@
   $ echo 'mod' > large.bin
   $ echo 'mod' > sub1/sub2/large.dat
   $ hg archive -S -r 'wdir()' ../wdir3
-  $ diff -r . ../wdir3 | egrep -v '\.hg$|^Common subdirectories'
+  $ diff -r . ../wdir3 | grep -E -v '\.hg$|^Common subdirectories'
   Only in ../wdir3: .hg_archival.txt
   Only in .: .hglf
   Only in .: foo