Split workflow into separate jobs

.github/workflows/qhelp-pr-preview.yml

@@ -2,7 +2,6 @@ name: Query help preview
 
 permissions:
   contents: read
-  pull-requests: write
 
 on:
   pull_request_target:
@@ -14,6 +13,8 @@ on:
 
 jobs:
   qhelp:
+    permissions:
+      contents: read
     runs-on: ubuntu-latest
     steps:
       - uses: github/codeql/.github/actions/fetch-codeql@main
@@ -32,14 +33,28 @@ jobs:
 
       - name: QHelp preview
         run: |
-          if [ -s "${{ runner.temp }}/paths.txt" ]; then
-            ( echo "QHelp previews:";
-            cat "${{ runner.temp }}/paths.txt" | while read path; do
-              echo "<details> <summary>${path}</summary>"
-              echo
-              codeql generate query-help --format=markdown "${path}"
-              echo "</details>"
-            done) | gh pr comment "${{ github.event.pull_request.number }}" -F -
-          fi
+          cat "${{ runner.temp }}/paths.txt" | while read path; do
+            echo "<details> <summary>${path}</summary>"
+            echo
+            codeql generate query-help --format=markdown "${path}"
+            echo "</details>"
+          done > comment.txt
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: comment.txt
+          path: comment.txt
+
+  post_comment:
+    permissions:
+      pull-requests: write
+    runs-on: ubuntu-latest
+    needs: qhelp
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: comment.txt
+      - run: |
+          (echo "QHelp previews:"; cat comment.txt) | gh pr comment "${{ github.event.pull_request.number }}" --repo "${{ github.repository }}" -F -
         env:
           GITHUB_TOKEN: ${{ github.token }}