From 386be771d0c0d807ca3e668c99a5f8a53756871b Mon Sep 17 00:00:00 2001
From: Gandalf <gandalf@lerian.studio>
Date: Thu, 19 Mar 2026 20:26:24 -0300
Subject: [PATCH] fix: handle empty EXTRA_ARGS array in bash 3.2 (macOS
 default)
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set -u with empty arrays throws 'unbound variable' on bash < 4.4.
Use the conditional expansion form ${arr[@]+"${arr[@]}"} which
expands to nothing when the array is empty, compatible with all bash versions.

Fixes: https://github.com/LerianStudio/ring/issues (reported by Garzão)
---
 installer/install-ring.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/installer/install-ring.sh b/installer/install-ring.sh
index 5a1ebd5a..6997567f 100755
--- a/installer/install-ring.sh
+++ b/installer/install-ring.sh
@@ -182,7 +182,7 @@ if [[ "$dry_run" =~ ^[Yy]$ ]]; then
     echo ""
     echo "${YELLOW}=== Dry Run ===${RESET}"
     cd "$RING_ROOT"
-    "$PYTHON_CMD" -m installer.ring_installer install --platforms "$PLATFORMS" --dry-run "${EXTRA_ARGS[@]}"
+    "$PYTHON_CMD" -m installer.ring_installer install --platforms "$PLATFORMS" --dry-run "${EXTRA_ARGS[@]+"${EXTRA_ARGS[@]}"}"
     echo ""
     read -p "Proceed with actual installation? (Y/n): " proceed
     if [[ "$proceed" =~ ^[Nn]$ ]]; then
@@ -195,7 +195,7 @@ fi
 echo ""
 echo "${GREEN}=== Installing ===${RESET}"
 cd "$RING_ROOT"
-"$PYTHON_CMD" -m installer.ring_installer install --platforms "$PLATFORMS" "${EXTRA_ARGS[@]}"
+"$PYTHON_CMD" -m installer.ring_installer install --platforms "$PLATFORMS" "${EXTRA_ARGS[@]+"${EXTRA_ARGS[@]}"}"
 
 echo ""
 echo "${GREEN}================================================${RESET}"