shouldn't fail if issue number isnt present

.github/workflows/add-hacktoberfest-labels.yml

@@ -1,33 +1,29 @@
 name: Propagate Issue Labels to PR
+
 on:
   pull_request:
     types: [opened, synchronize]
+
 jobs:
   copy_labels:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
       uses: actions/checkout@v4
+
     - name: Get issue number from PR body
       id: issue_number
-      uses: actions/github-script@v6
-      with:
-        github-token: ${{ secrets.GITHUB_TOKEN }}
-        script: |
-          const prBody = context.payload.pull_request.body || '';
-          // Remove HTML comments
-          const bodyWithoutComments = prBody.replace(/<!--[\s\S]*?-->/g, '');
-          // Find issue number
-          const match = bodyWithoutComments.match(/(?:Resolves|Closes) #(\d+)/);
-          const issueNumber = match ? match[1] : null;
-          if (issueNumber) {
-            console.log(`Issue number found: ${issueNumber}`);
-            core.setOutput('has_issue', 'true');
-            core.setOutput('issue_number', issueNumber);
-          } else {
-            console.log('No issue number found in PR body');
-            core.setOutput('has_issue', 'false');
-          }
+      run: |
+        issue_number=$(echo "${{ github.event.pull_request.body }}" | grep -oP '(?<=#)\d+' | head -n1)
+        if [ -z "$issue_number" ]; then
+          echo "No issue number found in PR body"
+          echo "has_issue=false" >> $GITHUB_OUTPUT
+        else
+          echo "Issue number found: $issue_number"
+          echo "has_issue=true" >> $GITHUB_OUTPUT
+          echo "issue_number=$issue_number" >> $GITHUB_OUTPUT
+        fi
+
     - name: Get labels from linked issue
       if: steps.issue_number.outputs.has_issue == 'true'
       uses: actions/github-script@v6
@@ -47,6 +43,7 @@ jobs:
             console.log(`Error fetching issue labels: ${error}`);
             return [];
           }
+
     - name: Check for required labels
       if: steps.issue_number.outputs.has_issue == 'true' && steps.issue_labels.outputs.result != '[]'
       id: check_labels
@@ -58,6 +55,7 @@ jobs:
           const hacktoberfestLabel = labels.some(label => label.toLowerCase().includes('hacktoberfest'));
           const sizeLabelPresent = labels.some(label => ['small', 'medium', 'large'].includes(label.toLowerCase()));
           return hacktoberfestLabel || sizeLabelPresent;
+
     - name: Add labels to PR
       if: steps.issue_number.outputs.has_issue == 'true' && steps.check_labels.outputs.result == 'true'
       uses: actions/github-script@v6
@@ -76,4 +74,4 @@ jobs:
             console.log('Labels added successfully');
           } catch (error) {
             console.log(`Error adding labels: ${error}`);
-          }
+          }