plone.app.discussion/plone/app/discussion/browser/comments.pt

<tal:block tal:define="userHasReplyPermission view/can_reply;
                       isDiscussionAllowed view/is_discussion_allowed;
                       isAnonymousDiscussionAllowed view/anonymous_discussion_allowed;
                       isEditCommentAllowed view/edit_comment_allowed;
                       isDeleteOwnCommentAllowed view/delete_own_comment_allowed;
                       isAnon view/is_anonymous;
                       canReview view/can_review;
                       replies python:view.get_replies(canReview);
                       has_replies python:view.has_replies(canReview);
                       showCommenterImage view/show_commenter_image;
                       errors options/state/getErrors|nothing;
                       wtool context/@@plone_tools/workflow;
                       auth_token context/@@authenticator/token|nothing"
           tal:condition="python:isDiscussionAllowed or has_replies"
           i18n:domain="plone">

    <div class="reply"
         tal:condition="python:isAnon and not isAnonymousDiscussionAllowed">
        <form tal:attributes="action view/login_action">
            <input class="standalone loginbutton"
                   type="submit"
                   value="Log in to add comments"
                   i18n:attributes="value label_login_to_add_comments;"
                   />
        </form>
    </div>

    <div class="discussion"
         tal:attributes="class python: showCommenterImage and 'discussion showCommenterImage' or 'discussion';"
         tal:condition="has_replies">
        <tal:getreplies repeat="reply_dict replies">

            <div class="comment"
                 tal:define="reply reply_dict/comment;
                             depth reply_dict/depth|python:0;
                             depth python: depth > 10 and '10' or depth;
                             author_home_url python:view.get_commenter_home_url(username=reply.author_username);
                             has_author_link python:author_home_url and not isAnon;
                             portrait_url python:view.get_commenter_portrait(reply.author_username);
			     review_state python:wtool.getInfoFor(reply, 'review_state', 'none');
			     canEdit python:view.can_edit(reply);
                             canDelete python:view.can_delete(reply)"
                 tal:attributes="class python:'comment replyTreeLevel'+str(depth)+' state-'+str(review_state);
                                 id string:${reply/getId}"
                 tal:condition="python:canReview or review_state == 'published'">

                <div class="commentImage" tal:condition="showCommenterImage">
                    <a href="" tal:condition="has_author_link"
                               tal:attributes="href author_home_url">
                         <img src="defaultUser.png"
                              alt=""
                              class="defaultuserimg"
                              height="32"
                              tal:attributes="src portrait_url;
                                              alt reply/author_name" />
                    </a>
                    <img src="defaultUser.png"
                         alt=""
                         class="defaultuserimg"
                         height="32"
                         tal:condition="not: has_author_link"
                         tal:attributes="src portrait_url;
                                         alt reply/author_name" />
                </div>

                <div class="documentByLine">
                    <tal:name>
                        <a href=""
                           tal:condition="has_author_link"
                           tal:content="reply/author_name"
                           tal:attributes="href author_home_url">
                            Poster Name
                        </a>
                        <span tal:condition="not: has_author_link"
                              tal:replace="reply/author_name" />
                        <span tal:condition="not: reply/author_name"
                              i18n:translate="label_anonymous">Anonymous</span>
                    </tal:name>
                    <tal:posted i18n:translate="label_says">says:</tal:posted>
                    <div class="commentDate"
                         tal:content="python:view.format_time(reply.modification_date)">
                         8/23/2001 12:40:44 PM
                    </div>
                </div>

                <div class="commentBody">

                    <span tal:replace="structure reply/getText" />

                    <div class="commentActions">
                        <form name="delete"
                              action=""
                              method="post"
                              class="commentactionsform"
		                      tal:condition="python:not canDelete and isDeleteOwnCommentAllowed and view.could_delete_own(reply)"
                              tal:attributes="action string:${reply/absolute_url}/@@delete-own-comment;
			                      style python:view.can_delete_own(reply) and 'display: inline' or 'display: none'">
                            <input name="form.button.DeleteComment"
                                   class="destructive"
                                   type="submit"
                                   value="Delete"
                                   i18n:attributes="value label_delete;"
                                   />
                        </form>
                        <form name="delete"
                              action=""
                              method="post"
                              class="commentactionsform"
                              tal:condition="python:canDelete"
                              tal:attributes="action string:${reply/absolute_url}/@@moderate-delete-comment">
                            <input name="form.button.DeleteComment"
                                   class="destructive"
                                   type="submit"
                                   value="Delete"
                                   i18n:attributes="value label_delete;"
                                   />
                        </form>

                        <tal:edit tal:condition="python:isEditCommentAllowed and canEdit">
                          <!-- plone 5 will have auth_token available
                               so we'll use modal pattern -->
                          <a class="commentactionsform pat-plone-modal context"
                             tal:condition="auth_token"
                             tal:attributes="href string:${reply/absolute_url}/@@edit-comment?_authenticator=${auth_token}"
                             i18n:translate="Edit">Edit</a>
                          <form name="edit"
                                action=""
                                method="get"
                                class="commentactionsform"
                                tal:condition="not: auth_token"
                                tal:attributes="action string:${reply/absolute_url}/@@edit-comment">
                              <input name="form.button.EditComment"
                                     class="context"
                                     type="submit"
                                     value="Edit"
                                     i18n:attributes="value label_edit;"
                                     />
                          </form>
                        </tal:edit>


                        <!-- Workflow actions (e.g. 'publish') -->
                        <form name=""
                              action=""
                              method="get"
                              class="commentactionsform"
                              tal:condition="canReview"
                              tal:repeat="action reply_dict/actions|nothing"
                              tal:attributes="action string:${reply/absolute_url}/@@moderate-publish-comment;
                                              name action/id">
                            <input type="hidden" name="workflow_action" tal:attributes="value action/id" />
                            <input name="form.button.PublishComment"
                                   class="context"
                                   type="submit"
                                   tal:attributes="value action/title"
                                   i18n:attributes="value"
                                   />
                        </form>
                    </div>


                </div>
                <button class="context reply-to-comment-button hide allowMultiSubmit"
                        tal:condition="python:isDiscussionAllowed and (isAnon and isAnonymousDiscussionAllowed or userHasReplyPermission)"
                        i18n:translate="label_reply">
                    Reply
                </button>
            </div>

        </tal:getreplies>

        <div tal:condition="python: has_replies and not isDiscussionAllowed"
             class="discreet"
             i18n:translate="label_commenting_disabled">
            Commenting has been disabled.
        </div>

    </div>

    <div class="reply"
         tal:condition="python:has_replies and (isAnon and not isAnonymousDiscussionAllowed)">
        <form tal:attributes="action view/login_action">
            <input class="standalone loginbutton"
                   type="submit"
                   value="Log in to add comments"
                   i18n:attributes="value label_login_to_add_comments;"
                   />
        </form>
    </div>

    <div id="commenting" class="reply" tal:condition="python:isDiscussionAllowed and (isAnon and isAnonymousDiscussionAllowed or userHasReplyPermission)">

        <fieldset>

            <legend i18n:translate="label_add_comment">Add comment</legend>
            <p tal:content="view/comment_transform_message">
                You can add a comment by filling out the form below. Plain text
                formatting.
            </p>

            <div tal:replace="structure view/form/render" />

        </fieldset>
    </div>

</tal:block>