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

<tal:block define="userHasReplyPermission view/can_reply;
                   isDiscussionAllowed view/is_discussion_allowed;
                   isAnonymousDiscussionAllowed view/anonymous_discussion_allowed;
                   isAnon view/is_anonymous;
                   canManage view/can_manage;
                   replies python:view.get_replies(canManage);
                   showCommenterImage view/show_commenter_image;
                   errors options/state/getErrors|nothing;
                   wtool context/@@plone_tools/workflow"
           tal:condition="isDiscussionAllowed"
           i18n:domain="plone">
<h1 tal:content="isAnonymousDiscussionAllowed" />
    <div class="reply"
         tal:condition="python:isAnon and not isAnonymousDiscussionAllowed">
        <form tal:attributes="action view/login_action">
            <input class="standalone"
                   style="margin-bottom: 1.25em;"
                   type="submit"
                   value="Log in to add comments"
                   i18n:attributes="value label_login_to_add_comments;"
                   />
        </form>
    </div>

    <div class="discussion"
         tal:condition="python:replies or (userHasReplyPermission and isDiscussionAllowed) or (isAnon and not userHasReplyPermission and isDiscussionAllowed)">
        <tal:getreplies repeat="reply_dict replies">

            <div class="comment"
                 tal:define="reply reply_dict/comment;
                             depth reply_dict/depth|python:0;
                             creator reply/Creator;
                             author_home_url python:view.get_commenter_home_url(username=reply.author_username);
                             portrait_url python:view.get_commenter_portrait(reply.author_username);
                             anonymous_creator python:creator in ('Anonymous User', '');
                             published python:wtool.getInfoFor(reply, 'review_state') == 'published';"
                 tal:attributes="class python:'comment replyTreeLevel'+str(depth);
                                 style string:margin-left: ${depth}em;
                                 id string:${reply/id}"
                 tal:condition="python:canManage or published">

                <div class="commentImage" tal:condition="showCommenterImage">

                    <a href="" tal:condition="not:isAnon"
                               tal:attributes="href author_home_url">
                         <img src="defaultUser.gif"
                              alt=""
                              border="0"
                              width="75"
                              tal:attributes="src portrait_url;
                                              alt reply/creator" />
                    </a>
                    <img src="defaultUser.gif"
                         alt=""
                         border="0"
                         width="75"
                         tal:condition="isAnon"
                         tal:attributes="src portrait_url;
                                         alt reply/creator" />
                </div>

                <h3>
                    <a name="comments" tal:attributes="name reply/title">
                    <span tal:replace="reply/title">Comment title</span>
                    </a>
                </h3>

                <div class="documentByLine">
                        <tal:posted i18n:translate="label_comment_by">Posted by</tal:posted>
                        <tal:name>
                            <a href=""
                               tal:condition="not:isAnon"
                               tal:content="creator"
                               tal:attributes="href author_home_url">
                                Poster Name
                            </a>
                            <span tal:condition="isAnon"
                                  tal:replace="creator" />
                        </tal:name>
                        <tal:name i18n:translate="label_anonymous_user"
                                  condition="anonymous_creator">Anonymous User</tal:name>
                        <tal:at i18n:translate="label_commented_at">at</tal:at>
                    <span tal:replace="python:view.format_time(reply.modification_date)">8/23/2001 12:40:44 PM</span>
                </div>

                <div class="commentBody"
                     tal:content="structure reply/text">
                     This is the body text of the comment.
                </div>

                <button style="display: inline;"
                        class="context reply-to-comment-button allowMultiSubmit"
                        tal:condition="python:userHasReplyPermission and isDiscussionAllowed or isAnonymousDiscussionAllowed"
                        i18n:translate="label_reply;">
                    Reply
                </button>

                <form name="delete"
                      action=""
                      method="post"
                      style="display: inline;"
                      tal:condition="view/can_manage"
                      tal:attributes="action string:${reply/absolute_url}/@@moderate-delete-comment">
                    <input name="form.button.DeleteComment"
                           class="destructive"
                           type="submit"
                           value="Remove"
                           i18n:attributes="value label_remove;"
                           />
                </form>

                <!-- Workflow actions (e.g. 'publish') -->
                <form name=""
                      action=""
                      method="get"
                      style="display: inline;"
                      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"
                           />
                </form>

            </div>

        </tal:getreplies>
    </div>

    <div class="reply"
         tal:condition="python: isAnon and not isAnonymousDiscussionAllowed and replies">
        <form tal:attributes="action view/login_action">
            <input class="standalone"
                   style="margin-bottom: 1.25em;"
                   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: isAnon and isAnonymousDiscussionAllowed or not isAnon">

        <fieldset>

            <legend i18n:translate="legend_add_comment">Add comment</legend>
            <p i18n:translate="description_add_comment">
                You can add a comment by filling out the form below. Plain text
                formatting.
            </p>

            <div tal:replace="structure view/contents" />

        </fieldset>
    </div>

</tal:block>