# File lib/sup/modes/edit-message-mode.rb, line 177
  def delete_attachment
    i = curpos - @attachment_lines_offset - DECORATION_LINES - 1
    if i >= 0 && i < @attachments.size && BufferManager.ask_yes_or_no("Delete attachment #{@attachment_names[i]}?")
      @attachments.delete_at i
      @attachment_names.delete_at i
      update
    end
  end