From 95a88bac681572351a7eaac4c52e5865895d9bb5 Mon Sep 17 00:00:00 2001
From: Markus Frosch <markus.frosch@icinga.com>
Date: Wed, 21 Apr 2021 16:32:14 +0200
Subject: [PATCH 1/2] ci: Add markdown-link-check

---
 .github/workflows/markdown-links.yml | 10 ++++++++++
 tools/markdown-link-check.sh         | 18 ++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 .github/workflows/markdown-links.yml
 create mode 100755 tools/markdown-link-check.sh

diff --git a/.github/workflows/markdown-links.yml b/.github/workflows/markdown-links.yml
new file mode 100644
index 000000000..b8f5d2f7f
--- /dev/null
+++ b/.github/workflows/markdown-links.yml
@@ -0,0 +1,10 @@
+name: Check Markdown links
+
+on: push
+
+jobs:
+  markdown-link-check:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: gaurav-nelson/github-action-markdown-link-check@v1
diff --git a/tools/markdown-link-check.sh b/tools/markdown-link-check.sh
new file mode 100755
index 000000000..a313fca54
--- /dev/null
+++ b/tools/markdown-link-check.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -e
+
+PATH="$(pwd)/node_modules/.bin:${PATH}"
+
+errors=0
+
+while read -r file; do
+  if ! markdown-link-check --quiet "$file"; then
+    (( errors++ )) || true
+  fi
+done < <(find -name \*.md)
+
+if [[ $errors -gt 0 ]]; then
+  echo "Found ${errors} files with errors!"
+  exit 1
+fi

From c380efa62841e23285737eecf822303ca0c39a08 Mon Sep 17 00:00:00 2001
From: Markus Frosch <markus.frosch@icinga.com>
Date: Wed, 21 Apr 2021 17:13:06 +0200
Subject: [PATCH 2/2] Tune settings for markdown-link-check

- Don't check GitHub issue URLs
- Quiet mode for more overview
---
 .github/workflows/markdown-links.yml | 3 +++
 tools/markdown-link-check.json       | 5 +++++
 tools/markdown-link-check.sh         | 4 +++-
 3 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 tools/markdown-link-check.json

diff --git a/.github/workflows/markdown-links.yml b/.github/workflows/markdown-links.yml
index b8f5d2f7f..d9dfcaca7 100644
--- a/.github/workflows/markdown-links.yml
+++ b/.github/workflows/markdown-links.yml
@@ -8,3 +8,6 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - uses: gaurav-nelson/github-action-markdown-link-check@v1
+      with:
+        config-file: tools/markdown-link-check.json
+        use-quiet-mode: yes
diff --git a/tools/markdown-link-check.json b/tools/markdown-link-check.json
new file mode 100644
index 000000000..2daa98ab1
--- /dev/null
+++ b/tools/markdown-link-check.json
@@ -0,0 +1,5 @@
+{
+    "ignorePatterns": [
+      {"pattern": "^https://github.com/icinga/icinga2/issues/"}
+    ]
+}
diff --git a/tools/markdown-link-check.sh b/tools/markdown-link-check.sh
index a313fca54..c77740b3d 100755
--- a/tools/markdown-link-check.sh
+++ b/tools/markdown-link-check.sh
@@ -7,12 +7,14 @@ PATH="$(pwd)/node_modules/.bin:${PATH}"
 errors=0
 
 while read -r file; do
-  if ! markdown-link-check --quiet "$file"; then
+  if ! markdown-link-check --config tools/markdown-link-check.json --quiet "$file"; then
     (( errors++ )) || true
   fi
 done < <(find -name \*.md)
 
 if [[ $errors -gt 0 ]]; then
+  echo
   echo "Found ${errors} files with errors!"
+  echo
   exit 1
 fi