--- a/tests/test-hgweb-csp.t	Mon Jun 26 11:15:30 2023 +0100
+++ b/tests/test-hgweb-csp.t	Mon Jun 26 14:34:58 2023 +0200
@@ -69,7 +69,7 @@
 
 nonce should not be added to html if CSP doesn't use it
 
-  $ get-with-headers.py localhost:$HGPORT repo1/graph/tip | egrep 'content-security-policy|<script'
+  $ get-with-headers.py localhost:$HGPORT repo1/graph/tip | grep -E 'content-security-policy|<script'
   <script type="text/javascript" src="/repo1/static/mercurial.js"></script>
   <script type="text/javascript">
   <script type="text/javascript">
@@ -104,7 +104,7 @@
 
 nonce should be added to html when used
 
-  $ get-with-headers.py localhost:$HGPORT repo1/graph/tip content-security-policy | egrep 'content-security-policy|<script'
+  $ get-with-headers.py localhost:$HGPORT repo1/graph/tip content-security-policy | grep -E 'content-security-policy|<script'
   content-security-policy: image-src 'self'; script-src https://example.com/ 'nonce-*' (glob)
   <script type="text/javascript" src="/repo1/static/mercurial.js"></script>
   <script type="text/javascript" nonce="*"> (glob)
@@ -125,7 +125,7 @@
 
 nonce included in <script> and headers
 
-  $ get-with-headers.py localhost:$HGPORT graph/tip content-security-policy  | egrep 'content-security-policy|<script'
+  $ get-with-headers.py localhost:$HGPORT graph/tip content-security-policy  | grep -E 'content-security-policy|<script'
   content-security-policy: image-src 'self'; script-src https://example.com/ 'nonce-*' (glob)
   <script type="text/javascript" src="/static/mercurial.js"></script>
   <script type="text/javascript" nonce="*"> (glob)