chore: update .github/workflows/weekly-report.yml

.github/workflows/weekly-report.yml

@@ -14,8 +14,13 @@ jobs:
       - name: Scan
         id: report
         run: >
-          git --no-pager  whatchanged --no-color --since="1 week ago" -p -U0  -- README.md |
-          grep -v -E -e '^    update' -e '^(diff|index|@@|\-\-\-|\+\+\+) '
+          # MUST use GNU sed, not BSD sed!
+          git --no-pager  log --no-color --since='1 week ago' -p -U0 -- '*.md' ':!./_docs' |
+          grep -v -E -e '^    update' -e '^(Author:|index|new file mode|\-\-\-|\+\+\+) ' |
+          sed -e ':a;N;$!ba;s/\n\n\n/\n/g' |
+          sed -E '/^\s*$/ i\'$'\n''```' |
+          sed -E -e '/^diff / a\'$'\n''\'$'\n''```diff' -e 's|^diff --git a/(.+) b/.+|```\n\n### \1|g' -e 's|^commit (.+)|\n## Commit [\1](https://github.com/adoyle-h/Today-I-Learned/commit/\1)\n|g' |
+          sed -E '/^Date: /{N;s/^(Date: .+)\n```/\1/}'
 
       - name: Create a new GitHub Discussion
         uses: abirismyname/[email protected]
@@ -27,7 +32,6 @@ jobs:
           body: |
             What changed in last week:
 
-            ```diff
             ${{steps.rerport.stdout}}
             ```
           # https://github.com/marketplace/actions/create-github-discussion#obtaining-the-repository-id-and-category-id