From a51025fe8f5c0bacfecb943d997806e55477ce3e Mon Sep 17 00:00:00 2001
From: neil <neilgit@neilpang.com>
Date: Sat, 29 Jul 2023 15:32:50 +0800
Subject: [PATCH] fix https://github.com/acmesh-official/acme.sh/issues/3645

---
 acme.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/acme.sh b/acme.sh
index 7a9468fd..03c838ac 100755
--- a/acme.sh
+++ b/acme.sh
@@ -924,7 +924,9 @@ _sed_i() {
 }
 
 _egrep_o() {
-  if ! egrep -o "$1" 2>/dev/null; then
+  if _exists egrep; then
+    egrep -o "$1" 2>/dev/null;
+  else
     sed -n 's/.*\('"$1"'\).*/\1/p'
   fi
 }