From d31467311573b39bd07e182f863a26069f21d481 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 2 Jul 2025 12:37:08 +0900
Subject: [PATCH] CI: Fix appending to an array

Parentheses are required to add a new element to an array, not to the
first element of the array.
---
 .github/actions/setup/macos/action.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/actions/setup/macos/action.yml b/.github/actions/setup/macos/action.yml
index 5da7c6d44c..d0072ff828 100644
--- a/.github/actions/setup/macos/action.yml
+++ b/.github/actions/setup/macos/action.yml
@@ -21,7 +21,7 @@ runs:
         dir_config() {
           local args=() lib var="$1"; shift
           for lib in "$@"; do
-            args+="--with-${lib%@*}-dir=$(brew --prefix $lib)"
+            args+=("--with-${lib%@*}-dir=$(brew --prefix $lib)")
           done
           echo "$var=${args[*]}" >> $GITHUB_ENV
         }