In this case where the code exceeds the forum's post length limit, it is OK to provide the file as an attachment in a reply here on this forum thread.
- Open a forum reply here by clicking the "Reply" button.
- Click the "Upload" icon (
) on the post composer toolbar:

The "Open" dialog will open. - Select the file from the "Open" dialog.
- Click the "Open" button.
The dialog will close. - Click the "Reply" button to publish the post.
Alternatively, instead of using the "Upload" icon on the post composer toolbar as described in steps (2) - (4) above, you can simply drag and drop the file onto the post composer field to attach it.