Merge branch 'master' into jgrpp-beta

# Conflicts:
#	.github/workflows/ci-build.yml
#	src/lang/german.txt
#	src/lang/romanian.txt
#	src/lang/slovak.txt
#	src/lang/turkish.txt
#	src/network/core/address.cpp
#	src/network/core/tcp.h
#	src/network/core/udp.cpp
#	src/network/network.cpp
#	src/network/network_client.cpp
#	src/network/network_server.cpp
#	src/network/network_server.h
#	src/network/network_udp.cpp
#	src/openttd.cpp
#	src/saveload/newgrf_sl.cpp
#	src/tree_cmd.cpp
#	src/video/video_driver.hpp
#	src/window.cpp
#	src/window_gui.h

.github/workflows/ci-build.yml

@@ -314,3 +314,45 @@ jobs:
         echo "::group::Build"
         cmake --build .
         echo "::endgroup::"
+
+  check_annotations:
+    name: Check Annotations
+    needs:
+    - emscripten
+    - linux
+    - macos
+    - windows
+
+    if: always() && github.event_name == 'pull_request'
+
+    runs-on: ubuntu-20.04
+
+    steps:
+    - name: Get check suite ID
+      id: check_suite_id
+      uses: octokit/request-action@v2.x
+      with:
+        route: GET /repos/{repository}/actions/runs/{run_id}
+        repository: ${{ github.repository }}
+        run_id: ${{ github.run_id }}
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Get check runs
+      id: check_runs
+      uses: octokit/request-action@v2.x
+      with:
+        route: GET /repos/{repository}/check-suites/{check_suite_id}/check-runs
+        repository: ${{ github.repository }}
+        check_suite_id: ${{ fromJson(steps.check_suite_id.outputs.data).check_suite_id }}
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Check annotations
+      shell: bash
+      run: |
+        echo '[
+        ${{ toJson(fromJson(steps.check_runs.outputs.data).check_runs.*.output.title) }}, ${{ toJson(fromJson(steps.check_runs.outputs.data).check_runs.*.output.summary) }}
+        ]' | jq '.[0] as $t | .[1] as $s | reduce range(.[0] | length) as $i ([]; . + [if $t[$i] then $t[$i] + ": " + $s[$i] else empty end]) | .[]'
+
+        exit $(echo '${{ toJson(fromJson(steps.check_runs.outputs.data).check_runs.*.output.annotations_count) }}' | jq 'add')