From 50ab7c792ac77d973e2aac161063bad35f0f4366 Mon Sep 17 00:00:00 2001
From: Marius Boden <mboden@xpirit.com>
Date: Wed, 25 Oct 2023 10:09:59 +0000
Subject: [PATCH] fix(PR): fix preview step for multiple stacks

---
 action.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/action.yml b/action.yml
index dd1ceb7..bd2455a 100644
--- a/action.yml
+++ b/action.yml
@@ -170,7 +170,8 @@ runs:
           github.event_name == 'pull_request'
         }}
       run: |
-        if [[ -z ${{ steps.list.outputs.stdout }} ]]; then
+        STACKS='${{ steps.list.outputs.stdout }}'
+        if [[ -z "$STACKS" ]]; then
           echo >>${{ inputs.preview-comment-file }} '### No changed stacks.'
           cat ${{ inputs.preview-comment-file }} >>$GITHUB_STEP_SUMMARY
         else