From a7daee71da6b00ff8d9a1679bcfd08643ad2e03d Mon Sep 17 00:00:00 2001
From: Ava Chow <github@achow101.com>
Date: Thu, 25 Apr 2024 12:34:32 -0400
Subject: [PATCH] Merge bitcoin/bitcoin#29689: lint: scripted-diff verification
 also requires GNU grep

3bf4f8db669e1e274ce2633cf84add2938b9914b lint: scripted-diff verification also requires GNU grep (Sjors Provoost)

Pull request description:

  I noticed while trying to verify all historical `scripted-diff:` commits on macOS that some scripts require GNU sed.

  For example 0d6d2b650d1017691f48c9109a6cd020ab46aa73 uses `git grep --perl-regexp`.

ACKs for top commit:
  hernanmarino:
    cr ACK 3bf4f8db669e1e274ce2633cf84add2938b9914b
  maflcko:
    utACK 3bf4f8db669e1e274ce2633cf84add2938b9914b
  achow101:
    ACK 3bf4f8db669e1e274ce2633cf84add2938b9914b
  alfonsoromanz:
    Tested ACK 3bf4f8db669e1e274ce2633cf84add2938b9914b
  kristapsk:
    cr utACK 3bf4f8db669e1e274ce2633cf84add2938b9914b

Tree-SHA512: 09a060ab1bafad03df60d0f20c3dd1451850868dbd66ea38b18178b6230c1f06cf48622db82d9c51422d5689962ee0cd7aae0a31f84bd6d878215e6d73c1d47e
---
 test/lint/commit-script-check.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/lint/commit-script-check.sh b/test/lint/commit-script-check.sh
index ecf8039839..37251f8be9 100755
--- a/test/lint/commit-script-check.sh
+++ b/test/lint/commit-script-check.sh
@@ -22,6 +22,11 @@ if ! sed --help 2>&1 | grep -q 'GNU'; then
     exit 1;
 fi
 
+if ! grep --help 2>&1 | grep -q 'GNU'; then
+    echo "Error: the installed grep package is not compatible. Please make sure you have GNU grep installed in your system.";
+    exit 1;
+fi
+
 RET=0
 PREV_BRANCH=$(git name-rev --name-only HEAD)
 PREV_HEAD=$(git rev-parse HEAD)