From 8a62c6ad2e61a0f4c8006443d6ab115d8b1f58c0 Mon Sep 17 00:00:00 2001
From: Niko Fellner <n.fellner@logics.de>
Date: Sat, 24 Jan 2026 23:56:53 +0100
Subject: [PATCH] fix: prevent stdout duplication when capture_stdout is
 enabled

The previous implementation wrote command output to GITHUB_OUTPUT twice:
1. Via `tee -a "${GITHUB_OUTPUT}"` directly
2. Via the subshell redirect `} >>"${GITHUB_OUTPUT}"`

This caused every line of captured output to appear twice.

Fix: Change `tee -a "${GITHUB_OUTPUT}"` to `tee /dev/stderr` so that:
- Real-time output is still visible in the Actions log (via stderr)
- Output is only written once to GITHUB_OUTPUT (via subshell redirect)
---
 entrypoint.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/entrypoint.sh b/entrypoint.sh
index d5d56b6..ddd2b3b 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -73,7 +73,7 @@ echo "======================================="
 if [[ "${INPUT_CAPTURE_STDOUT}" == 'true' ]]; then
   {
     echo 'stdout<<EOF'
-    "${TARGET}" "$@" | tee -a "${GITHUB_OUTPUT}"
+    "${TARGET}" "$@" | tee /dev/stderr
     echo 'EOF'
   } >>"${GITHUB_OUTPUT}"
 else