From 2970d712ee52eaffee36d0e86cc7def71393a9b5 Mon Sep 17 00:00:00 2001
From: w-e-w <40751091+w-e-w@users.noreply.github.com>
Date: Sun, 16 Jul 2023 00:59:31 +0900
Subject: [PATCH] Warns merge into master

---
 .github/workflows/warns_merge_master.yml | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 .github/workflows/warns_merge_master.yml

diff --git a/.github/workflows/warns_merge_master.yml b/.github/workflows/warns_merge_master.yml
new file mode 100644
index 000000000..ae2aab6ba
--- /dev/null
+++ b/.github/workflows/warns_merge_master.yml
@@ -0,0 +1,19 @@
+name: Pull requests can't target master branch
+
+"on":
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    branches:
+      - master
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Warning marge into master
+        run: |
+          echo -e "::warning::This pull request directly merge into \"master\" branch, normally development happens on \"dev\" branch."
+          exit 1