From 4caae5b30a8b0f7e615fe8e238d9e379e256c934 Mon Sep 17 00:00:00 2001
From: glx22 <glx@openttd.org>
Date: Tue, 30 Apr 2024 22:05:36 +0200
Subject: [PATCH] Fix: don't crash when backporting non-merged PRs

---
 backport/backport.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/backport/backport.py b/backport/backport.py
index b65e6c7..40c76d5 100644
--- a/backport/backport.py
+++ b/backport/backport.py
@@ -173,6 +173,11 @@ def main():
         print("ERROR: couldn't fetch all Pull Requests marked for 'backport requested'")
         return
 
+    for pr in all_prs["data"]["search"]["edges"]:
+        if pr["node"]["mergedAt"] is None:
+            print(f"ERROR: #{pr['node']['number']} is marked for 'backport requested' while not merged")
+            return
+
     if not resume:
         do_command(["git", "fetch", "upstream"])
         do_command(["git", "checkout", f"upstream/release/{RELEASE}", "-B", "release-backport"])