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class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Technical details</span> </div> </a> <ul id="toc-Technical_details-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" 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<div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-manual" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Manual:Echo" title="View the subject page [c]" accesskey="c"><span>Manual</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Manual_talk:Echo" rel="discussion" title="Discussion about the content page [t]" accesskey="t"><span>Discussion</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label 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title="Handbuch:Echo (21% translated)" lang="de" dir="ltr">Deutsch</a></li> <li><span class="mw-pt-languages-ui mw-pt-languages-selected mw-pt-progress mw-pt-progress--complete" lang="en" dir="ltr">English</span></li> <li><a href="/wiki/Manual:Echo/yo" class="mw-pt-progress mw-pt-progress--low" title="Manual:Echo/yo (5% translated)" lang="yo" dir="ltr">Yorùbá</a></li> <li><a href="/wiki/Manual:Echo/es" class="mw-pt-progress mw-pt-progress--med" title="Manual:Echo (26% translated)" lang="es" dir="ltr">español</a></li> <li><a href="/wiki/Manual:Echo/fr" class="mw-pt-progress mw-pt-progress--complete" title="Manuel:Echo (100% translated)" lang="fr" dir="ltr">français</a></li> <li><a href="/wiki/Manual:Echo/pl" class="mw-pt-progress mw-pt-progress--low" title="Manual:Echo/pl (5% translated)" lang="pl" dir="ltr">polski</a></li> <li><a href="/wiki/Manual:Echo/pt-br" class="mw-pt-progress mw-pt-progress--high" title="Manual:Echo (95% translated)" lang="pt-BR" dir="ltr">português do Brasil</a></li> <li><a href="/wiki/Manual:Echo/cs" class="mw-pt-progress mw-pt-progress--low" title="Příručka:Echo (11% translated)" lang="cs" dir="ltr">čeština</a></li> <li><a href="/wiki/Manual:Echo/be-tarask" class="mw-pt-progress mw-pt-progress--low" title="Інструкцыя:Echo (5% translated)" lang="be-tarask" dir="ltr">беларуская (тарашкевіца)</a></li> <li><a href="/wiki/Manual:Echo/ru" class="mw-pt-progress mw-pt-progress--med" title="Руководство:Echo (26% translated)" lang="ru" dir="ltr">русский</a></li> <li><a href="/wiki/Manual:Echo/uk" class="mw-pt-progress mw-pt-progress--high" title="Посібник:Ехо (95% translated)" lang="uk" dir="ltr">українська</a></li> <li><a href="/wiki/Manual:Echo/sd" class="mw-pt-progress mw-pt-progress--med" title="مينيوئل:واڄو (21% translated)" lang="sd" dir="rtl">سنڌي</a></li> <li><a href="/wiki/Manual:Echo/zh" class="mw-pt-progress mw-pt-progress--complete" title="手册:Echo (100% translated)" lang="zh" dir="ltr">中文</a></li> <li><a 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td.mbox-image{padding:2px 0 2px 0.5em}.mw-parser-output .ambox td.mbox-imageright{padding:2px 0.5em 2px 0}.mw-parser-output table.ambox-notice{border-left-color:var(--border-color-progressive,#36c)}.mw-parser-output table.ambox-speedy{background-color:var(--background-color-error-subtle,#fee7e6)}.mw-parser-output table.ambox-delete,.mw-parser-output table.ambox-speedy{border-left-color:var(--background-color-error--active,#b32424)}.mw-parser-output table.ambox-content{border-left-color:#f28500}.mw-parser-output table.ambox-style{border-left-color:#fc3}.mw-parser-output table.ambox-move{border-left-color:#9932cc}.mw-parser-output table.ambox-protection{border-left-color:var(--border-color-base,#a2a9b1)}html body.mediawiki .mw-parser-output .ambox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;box-sizing:border-box;width:238px;font-size:88%;line-height:1.25em}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;box-sizing:border-box;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}</style><table class="plainlinks ambox box-Update ambox-content ambox-Update metadata" role="presentation"><tbody><tr><td class="mbox-image"><div style="width:52px"><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Gnome-appointment-soon.svg/45px-Gnome-appointment-soon.svg.png" decoding="async" width="45" height="45" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Gnome-appointment-soon.svg/68px-Gnome-appointment-soon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Gnome-appointment-soon.svg/90px-Gnome-appointment-soon.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">This page is <b>outdated</b>. <div class="hide-when-compact" style="display:inline;">It was written for an older version of MediaWiki and may not apply to the most recent version. If you have checked or updated this page and found the content to be suitable, please remove this notice.  See the <a href="/wiki/Manual_talk:Echo" title="Manual talk:Echo">talk page</a> for a possible discussion on this. </div></div></td></tr></tbody></table> <p><b><a href="/wiki/Special:MyLanguage/Extension:Echo" title="Special:MyLanguage/Extension:Echo">Extension:Echo</a><span style="display:none"><a href="/wiki/Extension:Echo" title="Extension:Echo"> </a></span></b> provides another notification system for MediaWiki. </p> <div class="mw-heading mw-heading2"><h2 id="Mentions">Mentions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Manual:Echo&action=edit&section=1" title="Edit section: Mentions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Echo can send <a href="/wiki/Notifications" title="Notifications">notifications</a> to users mentioned in discussions; this feature is often referred to as "pinging". Linking to a user's page in a signed message, either directly or through a template, will trigger a mention notification for them. The technical details of this are laid out below. </p> <div class="mw-heading mw-heading3"><h3 id="Technical_details">Technical details</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Manual:Echo&action=edit&section=2" title="Edit section: Technical details"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>When generating mention events, Echo processes revision diffs chunk by chunk, to check when a user has added a new comment which should be searched for mentioned users to ping. As of this writing, for user mention notifications to work: </p> <ul><li>The diff chunk must be recognised as an addition of new lines of text, not a change to existing lines.</li> <li>The user must sign their message.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> <ul><li>The signature must contain a plain wiki link (<code>[[ ]]</code>) to the user's page, user talk page, or contributions page, on the local wiki; the signature cannot be embedded in a template.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>In order for the signature to be recognised, the post must contain the exact same markup that writing <code>~~~</code> (and <code>~~~~</code>) generates.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></li></ul></li> <li>The comment must either belong in its entirety to existing sections (the diff chunk of added lines must not contain new section headers)<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>, or start a new section (diff chunk starts with a new section header).<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Only sections of level 2 and above count.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup></li> <li>Links to mentioned users' pages may be embedded in templates or not, since the diff is template-expanded<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> <ul><li>The <code>{{<a href="/wiki/Help:Magic_words#Technical_metadata" title="Help:Magic words">REVISIONID</a>}}</code> and <code>{{<a href="/wiki/Help:Magic_words#Technical_metadata" title="Help:Magic words">REVISIONUSER</a>}}</code> variables expand to the empty string when Echo parses the diff.</li></ul></li> <li>If the number of detected to-be-pinged users exceeds 50, no notifications will be delivered.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li></ul> <p>Also, all markup is parsed with regular expressions; sufficiently tricky markup can trigger bogus results. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Manual:Echo&action=edit&section=3" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::interpretDiff</code></a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::getUserFromLine</code></a></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::getUserFromLine</code></a></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::interpretDiff</code></a></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::generateEventsForRevision</code></a></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::interpretDiff</code></a></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a></span> <span class="reference-text"><a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::generateEventsForRevision</code></a></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text"><a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::HEADER_REGEX</code></a></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><a href="#cite_ref-9">↑</a></span> <span class="reference-text"><a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::generateMentionEvents</code></a></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><a href="#cite_ref-10">↑</a></span> <span class="reference-text">$wgEchoMaxMentionsCount in <a class="external text" href="https://phabricator.wikimedia.org/diffusion/ECHO/browse/master/includes/DiscussionParser.php">DiscussionParser.php, <code>EchoDiscussionParser::generateMentionEvents</code></a></span> </li> </ol></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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