ci[pr-check-links]: add checks for modified and renamed anchors

.github/workflows/pr-check-links.yml

@@ -11,20 +11,34 @@ jobs:
       - name: Clone repository
         uses: actions/checkout@v4
         with:
+          fetch-depth: 0
           ref: ${{ github.event.pull_request.head.ref }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}
-          fetch-depth: 0
+
+      - name: Set environment variables
+        id: set-env
+        run: |
+          # Extract the base commit ID where the feature branch diverged from main
+          base_commit=$(git merge-base origin/main ${{ github.event.pull_request.head.ref }})
+          echo "base_commit=$base_commit" >> $GITHUB_ENV
+
+          # Extract the head commit ID on the feature branch
+          head_commit=${{ github.event.pull_request.head.sha }}
+          echo "head_commit=$head_commit" >> $GITHUB_ENV
+
+      - name: Print commit IDs
+        run: |
+          echo ${{ env.base_commit }}
+          echo $(git merge-base origin/main ${{ github.event.pull_request.head.ref }})
+          echo ${{ env.head_commit }}
 
       - name: Create baseline branch by reverting feature branch changes
         run: |
           # Create a copy of the feature branch
           git checkout -b baseline-copy
 
-          # Find the base commit where the feature branch diverged from main
-          base_commit=$(git merge-base origin/main baseline-copy)
-
           # Reset the new branch to the base commit
-          git reset --hard $base_commit
+          git reset --hard ${{ env.base_commit }}
 
       - name: Dump all links from baseline-copy
         uses: lycheeverse/[email protected]
@@ -46,6 +60,39 @@ jobs:
       - name: Print .lycheeignore
         run: cat .lycheeignore
 
+      - name: Print commit IDs
+        run: |
+          echo ${{ env.base_commit }}
+          echo ${{ env.head_commit }}
+
+      - name: Dump names of files altered in PR and add prefix to each file
+        run: |
+          git diff --name-only --diff-filter=DM ${{ env.base_commit }} ${{ env.head_commit }} > altered-files.txt
+          sed -i 's|$|#|' altered-files.txt
+          git diff --name-status --diff-filter=R ${{ env.base_commit }} ${{ env.head_commit }} | awk '{print $2}' > renamed-files.txt
+          sed -i 's|$|#|' renamed-files.txt
+
+      - name: Print altered-files.txt
+        run: cat altered-files.txt
+
+      - name: Print renamed-files.txt
+        run: cat renamed-files.txt
+
+      - name: Remove links to altered files in .lycheeignore
+        run: |
+          while IFS= read -r line; do
+            sed -i "\|$line|d" .lycheeignore
+          done < altered-files.txt
+
+      - name: Remove links to altered files in .lycheeignore
+        run: |
+          while IFS= read -r line; do
+            sed -i "\|$line|d" .lycheeignore
+          done < renamed-files.txt
+
+      - name: Print .lycheeignore
+        run: cat .lycheeignore
+
       - name: Check links
         uses: lycheeverse/[email protected]
         with: