Workaround msys64 bash's buggy behavior

.github/workflows/ci.yml

@@ -93,6 +93,43 @@ jobs:
             exit 1
           fi
 
+  # https://github.com/taiki-e/install-action/pull/518#issuecomment-2160736760
+  test-msys64:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # - os: windows-2019
+          - os: windows-2022
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 60
+    steps:
+      - uses: taiki-e/checkout-action@v1
+      - run: |
+          echo "C:\msys64\mingw32\bin" >> $GITHUB_PATH
+          echo "C:\msys64\usr\bin" >> $GITHUB_PATH
+      # cross attempts to install rust-src when Cargo.toml is available even if `cross --version`
+      - run: rm Cargo.toml
+      - name: Generate tool list
+        id: tool-list
+        run: tools/ci/tool-list.sh >>"${GITHUB_OUTPUT}"
+      - uses: ./
+        with:
+          tool: ${{ steps.tool-list.outputs.tool }}
+      # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsshell
+      - name: Test bash
+        run: just --version && shfmt --version && protoc --version
+        shell: bash
+      - name: Test pwsh
+        run: just --version; shfmt --version; protoc --version
+        shell: pwsh
+      - name: Test powershell
+        run: just --version; shfmt --version; protoc --version
+        shell: powershell
+      - name: Test cmd
+        run: just --version & shfmt --version & protoc --version
+        shell: cmd
+
   test-container:
     strategy:
       fail-fast: false