Redmine/app/views/attachments/_form.html.erb

<% if defined?(container) && container && container.saved_attachments %>
  <% container.saved_attachments.each_with_index do |attachment, i| %>
    <span class="icon icon-attachment" style="display:block; line-height:1.5em;">
      <%= h(attachment.filename) %> (<%= number_to_human_size(attachment.filesize) %>)
      <%= hidden_field_tag "attachments[p#{i}][token]", "#{attachment.id}.#{attachment.digest}" %>
    </span>
  <% end %>
<% end %>
<span id="attachments_fields">
  <span>
    <%= file_field_tag 'attachments[1][file]', :id => nil, :class => 'file',
          :onchange => "checkFileSize(this, #{Setting.attachment_max_size.to_i.kilobytes}, '#{escape_javascript(l(:error_attachment_too_big, :max_size => number_to_human_size(Setting.attachment_max_size.to_i.kilobytes)))}');"  -%>
    <%= text_field_tag 'attachments[1][description]', '', :id => nil, :class => 'description', :maxlength => 255, :placeholder => l(:label_optional_description) %>
    <%= link_to_function(image_tag('delete.png'), 'removeFileField(this)', :title => (l(:button_delete))) %>
  </span>
</span>
<span class="add_attachment"><%= link_to l(:label_add_another_file), '#', :onclick => 'addFileField(); return false;', :class => 'add_attachment' %>
(<%= l(:label_max_size) %>: <%= number_to_human_size(Setting.attachment_max_size.to_i.kilobytes) %>)</span>