gitlabhq/app/views/notes/_load.js.haml

- unless @notes.blank?
  - if params[:last_id]
    :plain
      NoteList.replace("#{escape_javascript(render(partial: 'notes/notes_list'))}");

  - elsif params[:first_id]
    :plain
      NoteList.append(#{@notes.last.id}, "#{escape_javascript(render(partial: 'notes/notes_list'))}");

  - else
    :plain
      NoteList.setContent(#{@notes.last.id}, #{@notes.first.id}, "#{escape_javascript(render(partial: 'notes/notes_list'))}");

- else
  - if params[:first_id]
    :plain
      NoteList.append(#{params[:first_id]}, "");