From 7fe4fe3d202f16a0676ded5cdf927c66422e3a17 Mon Sep 17 00:00:00 2001
From: nrslib <38722970+nrslib@users.noreply.github.com>
Date: Wed, 4 Mar 2026 00:33:27 +0900
Subject: [PATCH] =?UTF-8?q?ci:=20PR=20=E3=81=A8=20push=20=E3=81=AE?=
 =?UTF-8?q?=E9=87=8D=E8=A4=87=E5=AE=9F=E8=A1=8C=E3=82=92=20concurrency=20?=
 =?UTF-8?q?=E3=82=B0=E3=83=AB=E3=83=BC=E3=83=97=E3=81=A7=E6=8A=91=E5=88=B6?=
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同一ブランチへの push と pull_request イベントが同時に発火した際に
後から来た方が先のジョブをキャンセルするよう concurrency を設定する。
---
 .github/workflows/ci.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d695786..4e78c55 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,6 +8,10 @@ on:
     branches: [main, "takt/**"]
   workflow_dispatch:
 
+concurrency:
+  group: ci-${{ github.event_name == 'pull_request' && github.head_ref || github.ref_name }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     runs-on: ubuntu-latest