chore(action): fix multiline rendering

and add a PR action to see what is going on in the changelog

.github/workflows/validate_pr.yml

@@ -14,3 +14,40 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: lumapps/github-actions-validator@master
+  release_notes:
+    timeout-minutes: 30
+    name: Render the changelog in a PR comment
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Get path filters
+        id: get_path_filters
+        run: |
+          service=${{ steps.get_version_and_tag.outputs.service }}
+          # those path focuses on relevant changes that can really impact a release
+          path_filters="changelog_generator/"
+          echo ::set-output name=path_filters::"$path_filters"
+      - name: Generate changelog
+        id: generate_changelog
+        uses: ./
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          path_filters: ${{ steps.get_path_filters.outputs.path_filters }}
+      - uses: kanga333/comment-hider@bbdf5b562fbec24e6f60572d8f712017428b92e0
+        name: Hide previous comments
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Add PR Comment
+        uses: actions/github-script@v3
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            github.issues.createComment({
+                issue_number: context.issue.number,
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                body: process.env.CHANGELOG
+            })

action.yml

@@ -30,11 +30,15 @@ outputs:
 runs:
   using: "composite"
   steps:
+    - name: Install Python ${{ env.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.7'
+        cache: 'pip'
     - name: Generate
       id: generate
       run: |
         # install de dependencies
-        sudo apt-get install python3-wheel -y
         pip3 install -r ${{ github.action_path }}/requirements.txt
         
         # define the environment variables
@@ -49,14 +53,15 @@ runs:
         # generate the change log
         CHANGELOG=$(python3 -m changelog_generator \
         --tag_prefix ${{ inputs.tag_prefix }} \
-        --path_filters ${{ inputs.path_filters }} \
-        | tr '%' '%25' | tr '\n' '%0A' | tr '\r' '%0D'
+        --path_filters ${{ inputs.path_filters }}
         )
         
         # truncate the release note to not bloat the 65536 bytes max limit
         CHANGELOG=${CHANGELOG:0:65200}
         
         # output the changelog
-        echo "::set-output name=changelog::$CHANGELOG"
+        echo "CHANGELOG<<EOF" >> $GITHUB_ENV
+        echo "$CHANGELOG" >> $GITHUB_ENV
+        echo "EOF" >> $GITHUB_ENV
 
       shell: bash