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diff --git a/www/wiki/includes/Linker.php b/www/wiki/includes/Linker.php
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+<?php
+/**
+ * Methods to make links and related items.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+use MediaWiki\Linker\LinkTarget;
+use MediaWiki\MediaWikiServices;
+
+/**
+ * Some internal bits split of from Skin.php. These functions are used
+ * for primarily page content: links, embedded images, table of contents. Links
+ * are also used in the skin.
+ *
+ * @todo turn this into a legacy interface for HtmlPageLinkRenderer and similar services.
+ *
+ * @ingroup Skins
+ */
+class Linker {
+	/**
+	 * Flags for userToolLinks()
+	 */
+	const TOOL_LINKS_NOBLOCK = 1;
+	const TOOL_LINKS_EMAIL = 2;
+
+	/**
+	 * Return the CSS colour of a known link
+	 *
+	 * @deprecated since 1.28, use LinkRenderer::getLinkClasses() instead
+	 *
+	 * @since 1.16.3
+	 * @param LinkTarget $t
+	 * @param int $threshold User defined threshold
+	 * @return string CSS class
+	 */
+	public static function getLinkColour( LinkTarget $t, $threshold ) {
+		wfDeprecated( __METHOD__, '1.28' );
+		$services = MediaWikiServices::getInstance();
+		$linkRenderer = $services->getLinkRenderer();
+		if ( $threshold !== $linkRenderer->getStubThreshold() ) {
+			// Need to create a new instance with the right stub threshold...
+			$linkRenderer = $services->getLinkRendererFactory()->create();
+			$linkRenderer->setStubThreshold( $threshold );
+		}
+
+		return $linkRenderer->getLinkClasses( $t );
+	}
+
+	/**
+	 * This function returns an HTML link to the given target.  It serves a few
+	 * purposes:
+	 *   1) If $target is a Title, the correct URL to link to will be figured
+	 *      out automatically.
+	 *   2) It automatically adds the usual classes for various types of link
+	 *      targets: "new" for red links, "stub" for short articles, etc.
+	 *   3) It escapes all attribute values safely so there's no risk of XSS.
+	 *   4) It provides a default tooltip if the target is a Title (the page
+	 *      name of the target).
+	 * link() replaces the old functions in the makeLink() family.
+	 *
+	 * @since 1.18 Method exists since 1.16 as non-static, made static in 1.18.
+	 * @deprecated since 1.28, use MediaWiki\Linker\LinkRenderer instead
+	 *
+	 * @param LinkTarget $target Can currently only be a LinkTarget, but this may
+	 *   change to support Images, literal URLs, etc.
+	 * @param string $html The HTML contents of the <a> element, i.e.,
+	 *   the link text.  This is raw HTML and will not be escaped.  If null,
+	 *   defaults to the prefixed text of the Title; or if the Title is just a
+	 *   fragment, the contents of the fragment.
+	 * @param array $customAttribs A key => value array of extra HTML attributes,
+	 *   such as title and class.  (href is ignored.)  Classes will be
+	 *   merged with the default classes, while other attributes will replace
+	 *   default attributes.  All passed attribute values will be HTML-escaped.
+	 *   A false attribute value means to suppress that attribute.
+	 * @param array $query The query string to append to the URL
+	 *   you're linking to, in key => value array form.  Query keys and values
+	 *   will be URL-encoded.
+	 * @param string|array $options String or array of strings:
+	 *     'known': Page is known to exist, so don't check if it does.
+	 *     'broken': Page is known not to exist, so don't check if it does.
+	 *     'noclasses': Don't add any classes automatically (includes "new",
+	 *       "stub", "mw-redirect", "extiw").  Only use the class attribute
+	 *       provided, if any, so you get a simple blue link with no funny i-
+	 *       cons.
+	 *     'forcearticlepath': Use the article path always, even with a querystring.
+	 *       Has compatibility issues on some setups, so avoid wherever possible.
+	 *     'http': Force a full URL with http:// as the scheme.
+	 *     'https': Force a full URL with https:// as the scheme.
+	 *     'stubThreshold' => (int): Stub threshold to use when determining link classes.
+	 * @return string HTML <a> attribute
+	 */
+	public static function link(
+		$target, $html = null, $customAttribs = [], $query = [], $options = []
+	) {
+		if ( !$target instanceof LinkTarget ) {
+			wfWarn( __METHOD__ . ': Requires $target to be a LinkTarget object.', 2 );
+			return "<!-- ERROR -->$html";
+		}
+
+		if ( is_string( $query ) ) {
+			// some functions withing core using this still hand over query strings
+			wfDeprecated( __METHOD__ . ' with parameter $query as string (should be array)', '1.20' );
+			$query = wfCgiToArray( $query );
+		}
+
+		$services = MediaWikiServices::getInstance();
+		$options = (array)$options;
+		if ( $options ) {
+			// Custom options, create new LinkRenderer
+			if ( !isset( $options['stubThreshold'] ) ) {
+				$defaultLinkRenderer = $services->getLinkRenderer();
+				$options['stubThreshold'] = $defaultLinkRenderer->getStubThreshold();
+			}
+			$linkRenderer = $services->getLinkRendererFactory()
+				->createFromLegacyOptions( $options );
+		} else {
+			$linkRenderer = $services->getLinkRenderer();
+		}
+
+		if ( $html !== null ) {
+			$text = new HtmlArmor( $html );
+		} else {
+			$text = $html; // null
+		}
+		if ( in_array( 'known', $options, true ) ) {
+			return $linkRenderer->makeKnownLink( $target, $text, $customAttribs, $query );
+		} elseif ( in_array( 'broken', $options, true ) ) {
+			return $linkRenderer->makeBrokenLink( $target, $text, $customAttribs, $query );
+		} elseif ( in_array( 'noclasses', $options, true ) ) {
+			return $linkRenderer->makePreloadedLink( $target, $text, '', $customAttribs, $query );
+		} else {
+			return $linkRenderer->makeLink( $target, $text, $customAttribs, $query );
+		}
+	}
+
+	/**
+	 * Identical to link(), except $options defaults to 'known'.
+	 *
+	 * @since 1.16.3
+	 * @deprecated since 1.28, use MediaWiki\Linker\LinkRenderer instead
+	 * @see Linker::link
+	 * @param Title $target
+	 * @param string $html
+	 * @param array $customAttribs
+	 * @param array $query
+	 * @param string|array $options
+	 * @return string
+	 */
+	public static function linkKnown(
+		$target, $html = null, $customAttribs = [],
+		$query = [], $options = [ 'known' ]
+	) {
+		return self::link( $target, $html, $customAttribs, $query, $options );
+	}
+
+	/**
+	 * Make appropriate markup for a link to the current article. This is since
+	 * MediaWiki 1.29.0 rendered as an <a> tag without an href and with a class
+	 * showing the link text. The calling sequence is the same as for the other
+	 * make*LinkObj static functions, but $query is not used.
+	 *
+	 * @since 1.16.3
+	 * @param Title $nt
+	 * @param string $html [optional]
+	 * @param string $query [optional]
+	 * @param string $trail [optional]
+	 * @param string $prefix [optional]
+	 *
+	 * @return string
+	 */
+	public static function makeSelfLinkObj( $nt, $html = '', $query = '', $trail = '', $prefix = '' ) {
+		$ret = "<a class=\"mw-selflink selflink\">{$prefix}{$html}</a>{$trail}";
+		if ( !Hooks::run( 'SelfLinkBegin', [ $nt, &$html, &$trail, &$prefix, &$ret ] ) ) {
+			return $ret;
+		}
+
+		if ( $html == '' ) {
+			$html = htmlspecialchars( $nt->getPrefixedText() );
+		}
+		list( $inside, $trail ) = self::splitTrail( $trail );
+		return "<a class=\"mw-selflink selflink\">{$prefix}{$html}{$inside}</a>{$trail}";
+	}
+
+	/**
+	 * Get a message saying that an invalid title was encountered.
+	 * This should be called after a method like Title::makeTitleSafe() returned
+	 * a value indicating that the title object is invalid.
+	 *
+	 * @param IContextSource $context Context to use to get the messages
+	 * @param int $namespace Namespace number
+	 * @param string $title Text of the title, without the namespace part
+	 * @return string
+	 */
+	public static function getInvalidTitleDescription( IContextSource $context, $namespace, $title ) {
+		global $wgContLang;
+
+		// First we check whether the namespace exists or not.
+		if ( MWNamespace::exists( $namespace ) ) {
+			if ( $namespace == NS_MAIN ) {
+				$name = $context->msg( 'blanknamespace' )->text();
+			} else {
+				$name = $wgContLang->getFormattedNsText( $namespace );
+			}
+			return $context->msg( 'invalidtitle-knownnamespace', $namespace, $name, $title )->text();
+		} else {
+			return $context->msg( 'invalidtitle-unknownnamespace', $namespace, $title )->text();
+		}
+	}
+
+	/**
+	 * @since 1.16.3
+	 * @param LinkTarget $target
+	 * @return LinkTarget
+	 */
+	public static function normaliseSpecialPage( LinkTarget $target ) {
+		if ( $target->getNamespace() == NS_SPECIAL && !$target->isExternal() ) {
+			list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $target->getDBkey() );
+			if ( !$name ) {
+				return $target;
+			}
+			$ret = SpecialPage::getTitleValueFor( $name, $subpage, $target->getFragment() );
+			return $ret;
+		} else {
+			return $target;
+		}
+	}
+
+	/**
+	 * Returns the filename part of an url.
+	 * Used as alternative text for external images.
+	 *
+	 * @param string $url
+	 *
+	 * @return string
+	 */
+	private static function fnamePart( $url ) {
+		$basename = strrchr( $url, '/' );
+		if ( false === $basename ) {
+			$basename = $url;
+		} else {
+			$basename = substr( $basename, 1 );
+		}
+		return $basename;
+	}
+
+	/**
+	 * Return the code for images which were added via external links,
+	 * via Parser::maybeMakeExternalImage().
+	 *
+	 * @since 1.16.3
+	 * @param string $url
+	 * @param string $alt
+	 *
+	 * @return string
+	 */
+	public static function makeExternalImage( $url, $alt = '' ) {
+		if ( $alt == '' ) {
+			$alt = self::fnamePart( $url );
+		}
+		$img = '';
+		$success = Hooks::run( 'LinkerMakeExternalImage', [ &$url, &$alt, &$img ] );
+		if ( !$success ) {
+			wfDebug( "Hook LinkerMakeExternalImage changed the output of external image "
+				. "with url {$url} and alt text {$alt} to {$img}\n", true );
+			return $img;
+		}
+		return Html::element( 'img',
+			[
+				'src' => $url,
+				'alt' => $alt ] );
+	}
+
+	/**
+	 * Given parameters derived from [[Image:Foo|options...]], generate the
+	 * HTML that that syntax inserts in the page.
+	 *
+	 * @param Parser $parser
+	 * @param Title $title Title object of the file (not the currently viewed page)
+	 * @param File $file File object, or false if it doesn't exist
+	 * @param array $frameParams Associative array of parameters external to the media handler.
+	 *     Boolean parameters are indicated by presence or absence, the value is arbitrary and
+	 *     will often be false.
+	 *          thumbnail       If present, downscale and frame
+	 *          manualthumb     Image name to use as a thumbnail, instead of automatic scaling
+	 *          framed          Shows image in original size in a frame
+	 *          frameless       Downscale but don't frame
+	 *          upright         If present, tweak default sizes for portrait orientation
+	 *          upright_factor  Fudge factor for "upright" tweak (default 0.75)
+	 *          border          If present, show a border around the image
+	 *          align           Horizontal alignment (left, right, center, none)
+	 *          valign          Vertical alignment (baseline, sub, super, top, text-top, middle,
+	 *                          bottom, text-bottom)
+	 *          alt             Alternate text for image (i.e. alt attribute). Plain text.
+	 *          class           HTML for image classes. Plain text.
+	 *          caption         HTML for image caption.
+	 *          link-url        URL to link to
+	 *          link-title      Title object to link to
+	 *          link-target     Value for the target attribute, only with link-url
+	 *          no-link         Boolean, suppress description link
+	 *
+	 * @param array $handlerParams Associative array of media handler parameters, to be passed
+	 *       to transform(). Typical keys are "width" and "page".
+	 * @param string|bool $time Timestamp of the file, set as false for current
+	 * @param string $query Query params for desc url
+	 * @param int|null $widthOption Used by the parser to remember the user preference thumbnailsize
+	 * @since 1.20
+	 * @return string HTML for an image, with links, wrappers, etc.
+	 */
+	public static function makeImageLink( Parser $parser, Title $title,
+		$file, $frameParams = [], $handlerParams = [], $time = false,
+		$query = "", $widthOption = null
+	) {
+		$res = null;
+		$dummy = new DummyLinker;
+		if ( !Hooks::run( 'ImageBeforeProduceHTML', [ &$dummy, &$title,
+			&$file, &$frameParams, &$handlerParams, &$time, &$res ] ) ) {
+			return $res;
+		}
+
+		if ( $file && !$file->allowInlineDisplay() ) {
+			wfDebug( __METHOD__ . ': ' . $title->getPrefixedDBkey() . " does not allow inline display\n" );
+			return self::link( $title );
+		}
+
+		// Clean up parameters
+		$page = isset( $handlerParams['page'] ) ? $handlerParams['page'] : false;
+		if ( !isset( $frameParams['align'] ) ) {
+			$frameParams['align'] = '';
+		}
+		if ( !isset( $frameParams['alt'] ) ) {
+			$frameParams['alt'] = '';
+		}
+		if ( !isset( $frameParams['title'] ) ) {
+			$frameParams['title'] = '';
+		}
+		if ( !isset( $frameParams['class'] ) ) {
+			$frameParams['class'] = '';
+		}
+
+		$prefix = $postfix = '';
+
+		if ( 'center' == $frameParams['align'] ) {
+			$prefix = '<div class="center">';
+			$postfix = '</div>';
+			$frameParams['align'] = 'none';
+		}
+		if ( $file && !isset( $handlerParams['width'] ) ) {
+			if ( isset( $handlerParams['height'] ) && $file->isVectorized() ) {
+				// If its a vector image, and user only specifies height
+				// we don't want it to be limited by its "normal" width.
+				global $wgSVGMaxSize;
+				$handlerParams['width'] = $wgSVGMaxSize;
+			} else {
+				$handlerParams['width'] = $file->getWidth( $page );
+			}
+
+			if ( isset( $frameParams['thumbnail'] )
+				|| isset( $frameParams['manualthumb'] )
+				|| isset( $frameParams['framed'] )
+				|| isset( $frameParams['frameless'] )
+				|| !$handlerParams['width']
+			) {
+				global $wgThumbLimits, $wgThumbUpright;
+
+				if ( $widthOption === null || !isset( $wgThumbLimits[$widthOption] ) ) {
+					$widthOption = User::getDefaultOption( 'thumbsize' );
+				}
+
+				// Reduce width for upright images when parameter 'upright' is used
+				if ( isset( $frameParams['upright'] ) && $frameParams['upright'] == 0 ) {
+					$frameParams['upright'] = $wgThumbUpright;
+				}
+
+				// For caching health: If width scaled down due to upright
+				// parameter, round to full __0 pixel to avoid the creation of a
+				// lot of odd thumbs.
+				$prefWidth = isset( $frameParams['upright'] ) ?
+					round( $wgThumbLimits[$widthOption] * $frameParams['upright'], -1 ) :
+					$wgThumbLimits[$widthOption];
+
+				// Use width which is smaller: real image width or user preference width
+				// Unless image is scalable vector.
+				if ( !isset( $handlerParams['height'] ) && ( $handlerParams['width'] <= 0 ||
+						$prefWidth < $handlerParams['width'] || $file->isVectorized() ) ) {
+					$handlerParams['width'] = $prefWidth;
+				}
+			}
+		}
+
+		if ( isset( $frameParams['thumbnail'] ) || isset( $frameParams['manualthumb'] )
+			|| isset( $frameParams['framed'] )
+		) {
+			# Create a thumbnail. Alignment depends on the writing direction of
+			# the page content language (right-aligned for LTR languages,
+			# left-aligned for RTL languages)
+			# If a thumbnail width has not been provided, it is set
+			# to the default user option as specified in Language*.php
+			if ( $frameParams['align'] == '' ) {
+				$frameParams['align'] = $parser->getTargetLanguage()->alignEnd();
+			}
+			return $prefix .
+				self::makeThumbLink2( $title, $file, $frameParams, $handlerParams, $time, $query ) .
+				$postfix;
+		}
+
+		if ( $file && isset( $frameParams['frameless'] ) ) {
+			$srcWidth = $file->getWidth( $page );
+			# For "frameless" option: do not present an image bigger than the
+			# source (for bitmap-style images). This is the same behavior as the
+			# "thumb" option does it already.
+			if ( $srcWidth && !$file->mustRender() && $handlerParams['width'] > $srcWidth ) {
+				$handlerParams['width'] = $srcWidth;
+			}
+		}
+
+		if ( $file && isset( $handlerParams['width'] ) ) {
+			# Create a resized image, without the additional thumbnail features
+			$thumb = $file->transform( $handlerParams );
+		} else {
+			$thumb = false;
+		}
+
+		if ( !$thumb ) {
+			$s = self::makeBrokenImageLinkObj( $title, $frameParams['title'], '', '', '', $time == true );
+		} else {
+			self::processResponsiveImages( $file, $thumb, $handlerParams );
+			$params = [
+				'alt' => $frameParams['alt'],
+				'title' => $frameParams['title'],
+				'valign' => isset( $frameParams['valign'] ) ? $frameParams['valign'] : false,
+				'img-class' => $frameParams['class'] ];
+			if ( isset( $frameParams['border'] ) ) {
+				$params['img-class'] .= ( $params['img-class'] !== '' ? ' ' : '' ) . 'thumbborder';
+			}
+			$params = self::getImageLinkMTOParams( $frameParams, $query, $parser ) + $params;
+
+			$s = $thumb->toHtml( $params );
+		}
+		if ( $frameParams['align'] != '' ) {
+			$s = "<div class=\"float{$frameParams['align']}\">{$s}</div>";
+		}
+		return str_replace( "\n", ' ', $prefix . $s . $postfix );
+	}
+
+	/**
+	 * Get the link parameters for MediaTransformOutput::toHtml() from given
+	 * frame parameters supplied by the Parser.
+	 * @param array $frameParams The frame parameters
+	 * @param string $query An optional query string to add to description page links
+	 * @param Parser|null $parser
+	 * @return array
+	 */
+	private static function getImageLinkMTOParams( $frameParams, $query = '', $parser = null ) {
+		$mtoParams = [];
+		if ( isset( $frameParams['link-url'] ) && $frameParams['link-url'] !== '' ) {
+			$mtoParams['custom-url-link'] = $frameParams['link-url'];
+			if ( isset( $frameParams['link-target'] ) ) {
+				$mtoParams['custom-target-link'] = $frameParams['link-target'];
+			}
+			if ( $parser ) {
+				$extLinkAttrs = $parser->getExternalLinkAttribs( $frameParams['link-url'] );
+				foreach ( $extLinkAttrs as $name => $val ) {
+					// Currently could include 'rel' and 'target'
+					$mtoParams['parser-extlink-' . $name] = $val;
+				}
+			}
+		} elseif ( isset( $frameParams['link-title'] ) && $frameParams['link-title'] !== '' ) {
+			$mtoParams['custom-title-link'] = Title::newFromLinkTarget(
+				self::normaliseSpecialPage( $frameParams['link-title'] )
+			);
+		} elseif ( !empty( $frameParams['no-link'] ) ) {
+			// No link
+		} else {
+			$mtoParams['desc-link'] = true;
+			$mtoParams['desc-query'] = $query;
+		}
+		return $mtoParams;
+	}
+
+	/**
+	 * Make HTML for a thumbnail including image, border and caption
+	 * @param Title $title
+	 * @param File|bool $file File object or false if it doesn't exist
+	 * @param string $label
+	 * @param string $alt
+	 * @param string $align
+	 * @param array $params
+	 * @param bool $framed
+	 * @param string $manualthumb
+	 * @return string
+	 */
+	public static function makeThumbLinkObj( Title $title, $file, $label = '', $alt,
+		$align = 'right', $params = [], $framed = false, $manualthumb = ""
+	) {
+		$frameParams = [
+			'alt' => $alt,
+			'caption' => $label,
+			'align' => $align
+		];
+		if ( $framed ) {
+			$frameParams['framed'] = true;
+		}
+		if ( $manualthumb ) {
+			$frameParams['manualthumb'] = $manualthumb;
+		}
+		return self::makeThumbLink2( $title, $file, $frameParams, $params );
+	}
+
+	/**
+	 * @param Title $title
+	 * @param File $file
+	 * @param array $frameParams
+	 * @param array $handlerParams
+	 * @param bool $time
+	 * @param string $query
+	 * @return string
+	 */
+	public static function makeThumbLink2( Title $title, $file, $frameParams = [],
+		$handlerParams = [], $time = false, $query = ""
+	) {
+		$exists = $file && $file->exists();
+
+		$page = isset( $handlerParams['page'] ) ? $handlerParams['page'] : false;
+		if ( !isset( $frameParams['align'] ) ) {
+			$frameParams['align'] = 'right';
+		}
+		if ( !isset( $frameParams['alt'] ) ) {
+			$frameParams['alt'] = '';
+		}
+		if ( !isset( $frameParams['title'] ) ) {
+			$frameParams['title'] = '';
+		}
+		if ( !isset( $frameParams['caption'] ) ) {
+			$frameParams['caption'] = '';
+		}
+
+		if ( empty( $handlerParams['width'] ) ) {
+			// Reduce width for upright images when parameter 'upright' is used
+			$handlerParams['width'] = isset( $frameParams['upright'] ) ? 130 : 180;
+		}
+		$thumb = false;
+		$noscale = false;
+		$manualthumb = false;
+
+		if ( !$exists ) {
+			$outerWidth = $handlerParams['width'] + 2;
+		} else {
+			if ( isset( $frameParams['manualthumb'] ) ) {
+				# Use manually specified thumbnail
+				$manual_title = Title::makeTitleSafe( NS_FILE, $frameParams['manualthumb'] );
+				if ( $manual_title ) {
+					$manual_img = wfFindFile( $manual_title );
+					if ( $manual_img ) {
+						$thumb = $manual_img->getUnscaledThumb( $handlerParams );
+						$manualthumb = true;
+					} else {
+						$exists = false;
+					}
+				}
+			} elseif ( isset( $frameParams['framed'] ) ) {
+				// Use image dimensions, don't scale
+				$thumb = $file->getUnscaledThumb( $handlerParams );
+				$noscale = true;
+			} else {
+				# Do not present an image bigger than the source, for bitmap-style images
+				# This is a hack to maintain compatibility with arbitrary pre-1.10 behavior
+				$srcWidth = $file->getWidth( $page );
+				if ( $srcWidth && !$file->mustRender() && $handlerParams['width'] > $srcWidth ) {
+					$handlerParams['width'] = $srcWidth;
+				}
+				$thumb = $file->transform( $handlerParams );
+			}
+
+			if ( $thumb ) {
+				$outerWidth = $thumb->getWidth() + 2;
+			} else {
+				$outerWidth = $handlerParams['width'] + 2;
+			}
+		}
+
+		# ThumbnailImage::toHtml() already adds page= onto the end of DjVu URLs
+		# So we don't need to pass it here in $query. However, the URL for the
+		# zoom icon still needs it, so we make a unique query for it. See T16771
+		$url = $title->getLocalURL( $query );
+		if ( $page ) {
+			$url = wfAppendQuery( $url, [ 'page' => $page ] );
+		}
+		if ( $manualthumb
+			&& !isset( $frameParams['link-title'] )
+			&& !isset( $frameParams['link-url'] )
+			&& !isset( $frameParams['no-link'] ) ) {
+			$frameParams['link-url'] = $url;
+		}
+
+		$s = "<div class=\"thumb t{$frameParams['align']}\">"
+			. "<div class=\"thumbinner\" style=\"width:{$outerWidth}px;\">";
+
+		if ( !$exists ) {
+			$s .= self::makeBrokenImageLinkObj( $title, $frameParams['title'], '', '', '', $time == true );
+			$zoomIcon = '';
+		} elseif ( !$thumb ) {
+			$s .= wfMessage( 'thumbnail_error', '' )->escaped();
+			$zoomIcon = '';
+		} else {
+			if ( !$noscale && !$manualthumb ) {
+				self::processResponsiveImages( $file, $thumb, $handlerParams );
+			}
+			$params = [
+				'alt' => $frameParams['alt'],
+				'title' => $frameParams['title'],
+				'img-class' => ( isset( $frameParams['class'] ) && $frameParams['class'] !== ''
+					? $frameParams['class'] . ' '
+					: '' ) . 'thumbimage'
+			];
+			$params = self::getImageLinkMTOParams( $frameParams, $query ) + $params;
+			$s .= $thumb->toHtml( $params );
+			if ( isset( $frameParams['framed'] ) ) {
+				$zoomIcon = "";
+			} else {
+				$zoomIcon = Html::rawElement( 'div', [ 'class' => 'magnify' ],
+					Html::rawElement( 'a', [
+						'href' => $url,
+						'class' => 'internal',
+						'title' => wfMessage( 'thumbnail-more' )->text() ],
+						"" ) );
+			}
+		}
+		$s .= '  <div class="thumbcaption">' . $zoomIcon . $frameParams['caption'] . "</div></div></div>";
+		return str_replace( "\n", ' ', $s );
+	}
+
+	/**
+	 * Process responsive images: add 1.5x and 2x subimages to the thumbnail, where
+	 * applicable.
+	 *
+	 * @param File $file
+	 * @param MediaTransformOutput $thumb
+	 * @param array $hp Image parameters
+	 */
+	public static function processResponsiveImages( $file, $thumb, $hp ) {
+		global $wgResponsiveImages;
+		if ( $wgResponsiveImages && $thumb && !$thumb->isError() ) {
+			$hp15 = $hp;
+			$hp15['width'] = round( $hp['width'] * 1.5 );
+			$hp20 = $hp;
+			$hp20['width'] = $hp['width'] * 2;
+			if ( isset( $hp['height'] ) ) {
+				$hp15['height'] = round( $hp['height'] * 1.5 );
+				$hp20['height'] = $hp['height'] * 2;
+			}
+
+			$thumb15 = $file->transform( $hp15 );
+			$thumb20 = $file->transform( $hp20 );
+			if ( $thumb15 && !$thumb15->isError() && $thumb15->getUrl() !== $thumb->getUrl() ) {
+				$thumb->responsiveUrls['1.5'] = $thumb15->getUrl();
+			}
+			if ( $thumb20 && !$thumb20->isError() && $thumb20->getUrl() !== $thumb->getUrl() ) {
+				$thumb->responsiveUrls['2'] = $thumb20->getUrl();
+			}
+		}
+	}
+
+	/**
+	 * Make a "broken" link to an image
+	 *
+	 * @since 1.16.3
+	 * @param Title $title
+	 * @param string $label Link label (plain text)
+	 * @param string $query Query string
+	 * @param string $unused1 Unused parameter kept for b/c
+	 * @param string $unused2 Unused parameter kept for b/c
+	 * @param bool $time A file of a certain timestamp was requested
+	 * @return string
+	 */
+	public static function makeBrokenImageLinkObj( $title, $label = '',
+		$query = '', $unused1 = '', $unused2 = '', $time = false
+	) {
+		if ( !$title instanceof Title ) {
+			wfWarn( __METHOD__ . ': Requires $title to be a Title object.' );
+			return "<!-- ERROR -->" . htmlspecialchars( $label );
+		}
+
+		global $wgEnableUploads, $wgUploadMissingFileUrl, $wgUploadNavigationUrl;
+		if ( $label == '' ) {
+			$label = $title->getPrefixedText();
+		}
+		$encLabel = htmlspecialchars( $label );
+		$currentExists = $time ? ( wfFindFile( $title ) != false ) : false;
+
+		if ( ( $wgUploadMissingFileUrl || $wgUploadNavigationUrl || $wgEnableUploads )
+			&& !$currentExists
+		) {
+			$redir = RepoGroup::singleton()->getLocalRepo()->checkRedirect( $title );
+
+			if ( $redir ) {
+				// We already know it's a redirect, so mark it
+				// accordingly
+				return self::link(
+					$title,
+					$encLabel,
+					[ 'class' => 'mw-redirect' ],
+					wfCgiToArray( $query ),
+					[ 'known', 'noclasses' ]
+				);
+			}
+
+			$href = self::getUploadUrl( $title, $query );
+
+			return '<a href="' . htmlspecialchars( $href ) . '" class="new" title="' .
+				htmlspecialchars( $title->getPrefixedText(), ENT_QUOTES ) . '">' .
+				$encLabel . '</a>';
+		}
+
+		return self::link( $title, $encLabel, [], wfCgiToArray( $query ), [ 'known', 'noclasses' ] );
+	}
+
+	/**
+	 * Get the URL to upload a certain file
+	 *
+	 * @since 1.16.3
+	 * @param Title $destFile Title object of the file to upload
+	 * @param string $query Urlencoded query string to prepend
+	 * @return string Urlencoded URL
+	 */
+	protected static function getUploadUrl( $destFile, $query = '' ) {
+		global $wgUploadMissingFileUrl, $wgUploadNavigationUrl;
+		$q = 'wpDestFile=' . $destFile->getPartialURL();
+		if ( $query != '' ) {
+			$q .= '&' . $query;
+		}
+
+		if ( $wgUploadMissingFileUrl ) {
+			return wfAppendQuery( $wgUploadMissingFileUrl, $q );
+		} elseif ( $wgUploadNavigationUrl ) {
+			return wfAppendQuery( $wgUploadNavigationUrl, $q );
+		} else {
+			$upload = SpecialPage::getTitleFor( 'Upload' );
+			return $upload->getLocalURL( $q );
+		}
+	}
+
+	/**
+	 * Create a direct link to a given uploaded file.
+	 *
+	 * @since 1.16.3
+	 * @param Title $title
+	 * @param string $html Pre-sanitized HTML
+	 * @param string $time MW timestamp of file creation time
+	 * @return string HTML
+	 */
+	public static function makeMediaLinkObj( $title, $html = '', $time = false ) {
+		$img = wfFindFile( $title, [ 'time' => $time ] );
+		return self::makeMediaLinkFile( $title, $img, $html );
+	}
+
+	/**
+	 * Create a direct link to a given uploaded file.
+	 * This will make a broken link if $file is false.
+	 *
+	 * @since 1.16.3
+	 * @param Title $title
+	 * @param File|bool $file File object or false
+	 * @param string $html Pre-sanitized HTML
+	 * @return string HTML
+	 *
+	 * @todo Handle invalid or missing images better.
+	 */
+	public static function makeMediaLinkFile( Title $title, $file, $html = '' ) {
+		if ( $file && $file->exists() ) {
+			$url = $file->getUrl();
+			$class = 'internal';
+		} else {
+			$url = self::getUploadUrl( $title );
+			$class = 'new';
+		}
+
+		$alt = $title->getText();
+		if ( $html == '' ) {
+			$html = $alt;
+		}
+
+		$ret = '';
+		$attribs = [
+			'href' => $url,
+			'class' => $class,
+			'title' => $alt
+		];
+
+		if ( !Hooks::run( 'LinkerMakeMediaLinkFile',
+			[ $title, $file, &$html, &$attribs, &$ret ] ) ) {
+			wfDebug( "Hook LinkerMakeMediaLinkFile changed the output of link "
+				. "with url {$url} and text {$html} to {$ret}\n", true );
+			return $ret;
+		}
+
+		return Html::rawElement( 'a', $attribs, $html );
+	}
+
+	/**
+	 * Make a link to a special page given its name and, optionally,
+	 * a message key from the link text.
+	 * Usage example: Linker::specialLink( 'Recentchanges' )
+	 *
+	 * @since 1.16.3
+	 * @param string $name
+	 * @param string $key
+	 * @return string
+	 */
+	public static function specialLink( $name, $key = '' ) {
+		if ( $key == '' ) {
+			$key = strtolower( $name );
+		}
+
+		return self::linkKnown( SpecialPage::getTitleFor( $name ), wfMessage( $key )->text() );
+	}
+
+	/**
+	 * Make an external link
+	 * @since 1.16.3. $title added in 1.21
+	 * @param string $url URL to link to
+	 * @param string $text Text of link
+	 * @param bool $escape Do we escape the link text?
+	 * @param string $linktype Type of external link. Gets added to the classes
+	 * @param array $attribs Array of extra attributes to <a>
+	 * @param Title|null $title Title object used for title specific link attributes
+	 * @return string
+	 */
+	public static function makeExternalLink( $url, $text, $escape = true,
+		$linktype = '', $attribs = [], $title = null
+	) {
+		global $wgTitle;
+		$class = "external";
+		if ( $linktype ) {
+			$class .= " $linktype";
+		}
+		if ( isset( $attribs['class'] ) && $attribs['class'] ) {
+			$class .= " {$attribs['class']}";
+		}
+		$attribs['class'] = $class;
+
+		if ( $escape ) {
+			$text = htmlspecialchars( $text );
+		}
+
+		if ( !$title ) {
+			$title = $wgTitle;
+		}
+		$newRel = Parser::getExternalLinkRel( $url, $title );
+		if ( !isset( $attribs['rel'] ) || $attribs['rel'] === '' ) {
+			$attribs['rel'] = $newRel;
+		} elseif ( $newRel !== '' ) {
+			// Merge the rel attributes.
+			$newRels = explode( ' ', $newRel );
+			$oldRels = explode( ' ', $attribs['rel'] );
+			$combined = array_unique( array_merge( $newRels, $oldRels ) );
+			$attribs['rel'] = implode( ' ', $combined );
+		}
+		$link = '';
+		$success = Hooks::run( 'LinkerMakeExternalLink',
+			[ &$url, &$text, &$link, &$attribs, $linktype ] );
+		if ( !$success ) {
+			wfDebug( "Hook LinkerMakeExternalLink changed the output of link "
+				. "with url {$url} and text {$text} to {$link}\n", true );
+			return $link;
+		}
+		$attribs['href'] = $url;
+		return Html::rawElement( 'a', $attribs, $text );
+	}
+
+	/**
+	 * Make user link (or user contributions for unregistered users)
+	 * @param int $userId User id in database.
+	 * @param string $userName User name in database.
+	 * @param string $altUserName Text to display instead of the user name (optional)
+	 * @return string HTML fragment
+	 * @since 1.16.3. $altUserName was added in 1.19.
+	 */
+	public static function userLink( $userId, $userName, $altUserName = false ) {
+		$classes = 'mw-userlink';
+		$page = null;
+		if ( $userId == 0 ) {
+			$page = ExternalUserNames::getUserLinkTitle( $userName );
+
+			if ( ExternalUserNames::isExternal( $userName ) ) {
+				$classes .= ' mw-extuserlink';
+			} elseif ( $altUserName === false ) {
+				$altUserName = IP::prettifyIP( $userName );
+			}
+			$classes .= ' mw-anonuserlink'; // Separate link class for anons (T45179)
+		} else {
+			$page = Title::makeTitle( NS_USER, $userName );
+		}
+
+		// Wrap the output with <bdi> tags for directionality isolation
+		$linkText =
+			'<bdi>' . htmlspecialchars( $altUserName !== false ? $altUserName : $userName ) . '</bdi>';
+
+		return $page
+			? self::link( $page, $linkText, [ 'class' => $classes ] )
+			: Html::rawElement( 'span', [ 'class' => $classes ], $linkText );
+	}
+
+	/**
+	 * Generate standard user tool links (talk, contributions, block link, etc.)
+	 *
+	 * @since 1.16.3
+	 * @param int $userId User identifier
+	 * @param string $userText User name or IP address
+	 * @param bool $redContribsWhenNoEdits Should the contributions link be
+	 *   red if the user has no edits?
+	 * @param int $flags Customisation flags (e.g. Linker::TOOL_LINKS_NOBLOCK
+	 *   and Linker::TOOL_LINKS_EMAIL).
+	 * @param int $edits User edit count (optional, for performance)
+	 * @return string HTML fragment
+	 */
+	public static function userToolLinks(
+		$userId, $userText, $redContribsWhenNoEdits = false, $flags = 0, $edits = null
+	) {
+		global $wgUser, $wgDisableAnonTalk, $wgLang;
+		$talkable = !( $wgDisableAnonTalk && 0 == $userId );
+		$blockable = !( $flags & self::TOOL_LINKS_NOBLOCK );
+		$addEmailLink = $flags & self::TOOL_LINKS_EMAIL && $userId;
+
+		if ( $userId == 0 && ExternalUserNames::isExternal( $userText ) ) {
+			// No tools for an external user
+			return '';
+		}
+
+		$items = [];
+		if ( $talkable ) {
+			$items[] = self::userTalkLink( $userId, $userText );
+		}
+		if ( $userId ) {
+			// check if the user has an edit
+			$attribs = [];
+			$attribs['class'] = 'mw-usertoollinks-contribs';
+			if ( $redContribsWhenNoEdits ) {
+				if ( intval( $edits ) === 0 && $edits !== 0 ) {
+					$user = User::newFromId( $userId );
+					$edits = $user->getEditCount();
+				}
+				if ( $edits === 0 ) {
+					$attribs['class'] .= ' new';
+				}
+			}
+			$contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
+
+			$items[] = self::link( $contribsPage, wfMessage( 'contribslink' )->escaped(), $attribs );
+		}
+		if ( $blockable && $wgUser->isAllowed( 'block' ) ) {
+			$items[] = self::blockLink( $userId, $userText );
+		}
+
+		if ( $addEmailLink && $wgUser->canSendEmail() ) {
+			$items[] = self::emailLink( $userId, $userText );
+		}
+
+		Hooks::run( 'UserToolLinksEdit', [ $userId, $userText, &$items ] );
+
+		if ( $items ) {
+			return wfMessage( 'word-separator' )->escaped()
+				. '<span class="mw-usertoollinks">'
+				. wfMessage( 'parentheses' )->rawParams( $wgLang->pipeList( $items ) )->escaped()
+				. '</span>';
+		} else {
+			return '';
+		}
+	}
+
+	/**
+	 * Alias for userToolLinks( $userId, $userText, true );
+	 * @since 1.16.3
+	 * @param int $userId User identifier
+	 * @param string $userText User name or IP address
+	 * @param int $edits User edit count (optional, for performance)
+	 * @return string
+	 */
+	public static function userToolLinksRedContribs( $userId, $userText, $edits = null ) {
+		return self::userToolLinks( $userId, $userText, true, 0, $edits );
+	}
+
+	/**
+	 * @since 1.16.3
+	 * @param int $userId User id in database.
+	 * @param string $userText User name in database.
+	 * @return string HTML fragment with user talk link
+	 */
+	public static function userTalkLink( $userId, $userText ) {
+		$userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
+		$moreLinkAttribs['class'] = 'mw-usertoollinks-talk';
+		$userTalkLink = self::link( $userTalkPage,
+						wfMessage( 'talkpagelinktext' )->escaped(),
+						$moreLinkAttribs );
+		return $userTalkLink;
+	}
+
+	/**
+	 * @since 1.16.3
+	 * @param int $userId
+	 * @param string $userText User name in database.
+	 * @return string HTML fragment with block link
+	 */
+	public static function blockLink( $userId, $userText ) {
+		$blockPage = SpecialPage::getTitleFor( 'Block', $userText );
+		$moreLinkAttribs['class'] = 'mw-usertoollinks-block';
+		$blockLink = self::link( $blockPage,
+					 wfMessage( 'blocklink' )->escaped(),
+					 $moreLinkAttribs );
+		return $blockLink;
+	}
+
+	/**
+	 * @param int $userId
+	 * @param string $userText User name in database.
+	 * @return string HTML fragment with e-mail user link
+	 */
+	public static function emailLink( $userId, $userText ) {
+		$emailPage = SpecialPage::getTitleFor( 'Emailuser', $userText );
+		$moreLinkAttribs['class'] = 'mw-usertoollinks-mail';
+		$emailLink = self::link( $emailPage,
+					 wfMessage( 'emaillink' )->escaped(),
+					 $moreLinkAttribs );
+		return $emailLink;
+	}
+
+	/**
+	 * Generate a user link if the current user is allowed to view it
+	 * @since 1.16.3
+	 * @param Revision $rev
+	 * @param bool $isPublic Show only if all users can see it
+	 * @return string HTML fragment
+	 */
+	public static function revUserLink( $rev, $isPublic = false ) {
+		if ( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
+			$link = wfMessage( 'rev-deleted-user' )->escaped();
+		} elseif ( $rev->userCan( Revision::DELETED_USER ) ) {
+			$link = self::userLink( $rev->getUser( Revision::FOR_THIS_USER ),
+				$rev->getUserText( Revision::FOR_THIS_USER ) );
+		} else {
+			$link = wfMessage( 'rev-deleted-user' )->escaped();
+		}
+		if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
+			return '<span class="history-deleted">' . $link . '</span>';
+		}
+		return $link;
+	}
+
+	/**
+	 * Generate a user tool link cluster if the current user is allowed to view it
+	 * @since 1.16.3
+	 * @param Revision $rev
+	 * @param bool $isPublic Show only if all users can see it
+	 * @return string HTML
+	 */
+	public static function revUserTools( $rev, $isPublic = false ) {
+		if ( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
+			$link = wfMessage( 'rev-deleted-user' )->escaped();
+		} elseif ( $rev->userCan( Revision::DELETED_USER ) ) {
+			$userId = $rev->getUser( Revision::FOR_THIS_USER );
+			$userText = $rev->getUserText( Revision::FOR_THIS_USER );
+			$link = self::userLink( $userId, $userText )
+				. self::userToolLinks( $userId, $userText );
+		} else {
+			$link = wfMessage( 'rev-deleted-user' )->escaped();
+		}
+		if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
+			return ' <span class="history-deleted">' . $link . '</span>';
+		}
+		return $link;
+	}
+
+	/**
+	 * This function is called by all recent changes variants, by the page history,
+	 * and by the user contributions list. It is responsible for formatting edit
+	 * summaries. It escapes any HTML in the summary, but adds some CSS to format
+	 * auto-generated comments (from section editing) and formats [[wikilinks]].
+	 *
+	 * @author Erik Moeller <moeller@scireview.de>
+	 * @since 1.16.3. $wikiId added in 1.26
+	 *
+	 * Note: there's not always a title to pass to this function.
+	 * Since you can't set a default parameter for a reference, I've turned it
+	 * temporarily to a value pass. Should be adjusted further. --brion
+	 *
+	 * @param string $comment
+	 * @param Title|null $title Title object (to generate link to the section in autocomment)
+	 *  or null
+	 * @param bool $local Whether section links should refer to local page
+	 * @param string|null $wikiId Id (as used by WikiMap) of the wiki to generate links to.
+	 *  For use with external changes.
+	 *
+	 * @return mixed|string
+	 */
+	public static function formatComment(
+		$comment, $title = null, $local = false, $wikiId = null
+	) {
+		# Sanitize text a bit:
+		$comment = str_replace( "\n", " ", $comment );
+		# Allow HTML entities (for T15815)
+		$comment = Sanitizer::escapeHtmlAllowEntities( $comment );
+
+		# Render autocomments and make links:
+		$comment = self::formatAutocomments( $comment, $title, $local, $wikiId );
+		$comment = self::formatLinksInComment( $comment, $title, $local, $wikiId );
+
+		return $comment;
+	}
+
+	/**
+	 * Converts autogenerated comments in edit summaries into section links.
+	 *
+	 * The pattern for autogen comments is / * foo * /, which makes for
+	 * some nasty regex.
+	 * We look for all comments, match any text before and after the comment,
+	 * add a separator where needed and format the comment itself with CSS
+	 * Called by Linker::formatComment.
+	 *
+	 * @param string $comment Comment text
+	 * @param Title|null $title An optional title object used to links to sections
+	 * @param bool $local Whether section links should refer to local page
+	 * @param string|null $wikiId Id of the wiki to link to (if not the local wiki),
+	 *  as used by WikiMap.
+	 *
+	 * @return string Formatted comment (wikitext)
+	 */
+	private static function formatAutocomments(
+		$comment, $title = null, $local = false, $wikiId = null
+	) {
+		// @todo $append here is something of a hack to preserve the status
+		// quo. Someone who knows more about bidi and such should decide
+		// (1) what sane rendering even *is* for an LTR edit summary on an RTL
+		// wiki, both when autocomments exist and when they don't, and
+		// (2) what markup will make that actually happen.
+		$append = '';
+		$comment = preg_replace_callback(
+			// To detect the presence of content before or after the
+			// auto-comment, we use capturing groups inside optional zero-width
+			// assertions. But older versions of PCRE can't directly make
+			// zero-width assertions optional, so wrap them in a non-capturing
+			// group.
+			'!(?:(?<=(.)))?/\*\s*(.*?)\s*\*/(?:(?=(.)))?!',
+			function ( $match ) use ( $title, $local, $wikiId, &$append ) {
+				global $wgLang;
+
+				// Ensure all match positions are defined
+				$match += [ '', '', '', '' ];
+
+				$pre = $match[1] !== '';
+				$auto = $match[2];
+				$post = $match[3] !== '';
+				$comment = null;
+
+				Hooks::run(
+					'FormatAutocomments',
+					[ &$comment, $pre, $auto, $post, $title, $local, $wikiId ]
+				);
+
+				if ( $comment === null ) {
+					$link = '';
+					if ( $title ) {
+						$section = $auto;
+						# Remove links that a user may have manually put in the autosummary
+						# This could be improved by copying as much of Parser::stripSectionName as desired.
+						$section = str_replace( '[[:', '', $section );
+						$section = str_replace( '[[', '', $section );
+						$section = str_replace( ']]', '', $section );
+
+						$section = substr( Parser::guessSectionNameFromStrippedText( $section ), 1 );
+						if ( $local ) {
+							$sectionTitle = Title::makeTitleSafe( NS_MAIN, '', $section );
+						} else {
+							$sectionTitle = Title::makeTitleSafe( $title->getNamespace(),
+								$title->getDBkey(), $section );
+						}
+						if ( $sectionTitle ) {
+							$link = Linker::makeCommentLink( $sectionTitle, $wgLang->getArrow(), $wikiId, 'noclasses' );
+						} else {
+							$link = '';
+						}
+					}
+					if ( $pre ) {
+						# written summary $presep autocomment (summary /* section */)
+						$pre = wfMessage( 'autocomment-prefix' )->inContentLanguage()->escaped();
+					}
+					if ( $post ) {
+						# autocomment $postsep written summary (/* section */ summary)
+						$auto .= wfMessage( 'colon-separator' )->inContentLanguage()->escaped();
+					}
+					$auto = '<span class="autocomment">' . $auto . '</span>';
+					$comment = $pre . $link . $wgLang->getDirMark()
+						. '<span dir="auto">' . $auto;
+					$append .= '</span>';
+				}
+				return $comment;
+			},
+			$comment
+		);
+		return $comment . $append;
+	}
+
+	/**
+	 * Formats wiki links and media links in text; all other wiki formatting
+	 * is ignored
+	 *
+	 * @since 1.16.3. $wikiId added in 1.26
+	 * @todo FIXME: Doesn't handle sub-links as in image thumb texts like the main parser
+	 *
+	 * @param string $comment Text to format links in. WARNING! Since the output of this
+	 *	function is html, $comment must be sanitized for use as html. You probably want
+	 *	to pass $comment through Sanitizer::escapeHtmlAllowEntities() before calling
+	 *	this function.
+	 * @param Title|null $title An optional title object used to links to sections
+	 * @param bool $local Whether section links should refer to local page
+	 * @param string|null $wikiId Id of the wiki to link to (if not the local wiki),
+	 *  as used by WikiMap.
+	 *
+	 * @return string
+	 */
+	public static function formatLinksInComment(
+		$comment, $title = null, $local = false, $wikiId = null
+	) {
+		return preg_replace_callback(
+			'/
+				\[\[
+				:? # ignore optional leading colon
+				([^\]|]+) # 1. link target; page names cannot include ] or |
+				(?:\|
+					# 2. link text
+					# Stop matching at ]] without relying on backtracking.
+					((?:]?[^\]])*+)
+				)?
+				\]\]
+				([^[]*) # 3. link trail (the text up until the next link)
+			/x',
+			function ( $match ) use ( $title, $local, $wikiId ) {
+				global $wgContLang;
+
+				$medians = '(?:' . preg_quote( MWNamespace::getCanonicalName( NS_MEDIA ), '/' ) . '|';
+				$medians .= preg_quote( $wgContLang->getNsText( NS_MEDIA ), '/' ) . '):';
+
+				$comment = $match[0];
+
+				# fix up urlencoded title texts (copied from Parser::replaceInternalLinks)
+				if ( strpos( $match[1], '%' ) !== false ) {
+					$match[1] = strtr(
+						rawurldecode( $match[1] ),
+						[ '<' => '&lt;', '>' => '&gt;' ]
+					);
+				}
+
+				# Handle link renaming [[foo|text]] will show link as "text"
+				if ( $match[2] != "" ) {
+					$text = $match[2];
+				} else {
+					$text = $match[1];
+				}
+				$submatch = [];
+				$thelink = null;
+				if ( preg_match( '/^' . $medians . '(.*)$/i', $match[1], $submatch ) ) {
+					# Media link; trail not supported.
+					$linkRegexp = '/\[\[(.*?)\]\]/';
+					$title = Title::makeTitleSafe( NS_FILE, $submatch[1] );
+					if ( $title ) {
+						$thelink = Linker::makeMediaLinkObj( $title, $text );
+					}
+				} else {
+					# Other kind of link
+					# Make sure its target is non-empty
+					if ( isset( $match[1][0] ) && $match[1][0] == ':' ) {
+						$match[1] = substr( $match[1], 1 );
+					}
+					if ( $match[1] !== false && $match[1] !== '' ) {
+						if ( preg_match( $wgContLang->linkTrail(), $match[3], $submatch ) ) {
+							$trail = $submatch[1];
+						} else {
+							$trail = "";
+						}
+						$linkRegexp = '/\[\[(.*?)\]\]' . preg_quote( $trail, '/' ) . '/';
+						list( $inside, $trail ) = Linker::splitTrail( $trail );
+
+						$linkText = $text;
+						$linkTarget = Linker::normalizeSubpageLink( $title, $match[1], $linkText );
+
+						$target = Title::newFromText( $linkTarget );
+						if ( $target ) {
+							if ( $target->getText() == '' && !$target->isExternal()
+								&& !$local && $title
+							) {
+								$target = $title->createFragmentTarget( $target->getFragment() );
+							}
+
+							$thelink = Linker::makeCommentLink( $target, $linkText . $inside, $wikiId ) . $trail;
+						}
+					}
+				}
+				if ( $thelink ) {
+					// If the link is still valid, go ahead and replace it in!
+					$comment = preg_replace(
+						$linkRegexp,
+						StringUtils::escapeRegexReplacement( $thelink ),
+						$comment,
+						1
+					);
+				}
+
+				return $comment;
+			},
+			$comment
+		);
+	}
+
+	/**
+	 * Generates a link to the given Title
+	 *
+	 * @note This is only public for technical reasons. It's not intended for use outside Linker.
+	 *
+	 * @param LinkTarget $linkTarget
+	 * @param string $text
+	 * @param string|null $wikiId Id of the wiki to link to (if not the local wiki),
+	 *  as used by WikiMap.
+	 * @param string|string[] $options See the $options parameter in Linker::link.
+	 *
+	 * @return string HTML link
+	 */
+	public static function makeCommentLink(
+		LinkTarget $linkTarget, $text, $wikiId = null, $options = []
+	) {
+		if ( $wikiId !== null && !$linkTarget->isExternal() ) {
+			$link = self::makeExternalLink(
+				WikiMap::getForeignURL(
+					$wikiId,
+					$linkTarget->getNamespace() === 0
+						? $linkTarget->getDBkey()
+						: MWNamespace::getCanonicalName( $linkTarget->getNamespace() ) . ':'
+							. $linkTarget->getDBkey(),
+					$linkTarget->getFragment()
+				),
+				$text,
+				/* escape = */ false // Already escaped
+			);
+		} else {
+			$link = self::link( $linkTarget, $text, [], [], $options );
+		}
+
+		return $link;
+	}
+
+	/**
+	 * @param Title $contextTitle
+	 * @param string $target
+	 * @param string &$text
+	 * @return string
+	 */
+	public static function normalizeSubpageLink( $contextTitle, $target, &$text ) {
+		# Valid link forms:
+		# Foobar -- normal
+		# :Foobar -- override special treatment of prefix (images, language links)
+		# /Foobar -- convert to CurrentPage/Foobar
+		# /Foobar/ -- convert to CurrentPage/Foobar, strip the initial and final / from text
+		# ../ -- convert to CurrentPage, from CurrentPage/CurrentSubPage
+		# ../Foobar -- convert to CurrentPage/Foobar,
+		#              (from CurrentPage/CurrentSubPage)
+		# ../Foobar/ -- convert to CurrentPage/Foobar, use 'Foobar' as text
+		#              (from CurrentPage/CurrentSubPage)
+
+		$ret = $target; # default return value is no change
+
+		# Some namespaces don't allow subpages,
+		# so only perform processing if subpages are allowed
+		if ( $contextTitle && MWNamespace::hasSubpages( $contextTitle->getNamespace() ) ) {
+			$hash = strpos( $target, '#' );
+			if ( $hash !== false ) {
+				$suffix = substr( $target, $hash );
+				$target = substr( $target, 0, $hash );
+			} else {
+				$suffix = '';
+			}
+			# T9425
+			$target = trim( $target );
+			# Look at the first character
+			if ( $target != '' && $target[0] === '/' ) {
+				# / at end means we don't want the slash to be shown
+				$m = [];
+				$trailingSlashes = preg_match_all( '%(/+)$%', $target, $m );
+				if ( $trailingSlashes ) {
+					$noslash = $target = substr( $target, 1, -strlen( $m[0][0] ) );
+				} else {
+					$noslash = substr( $target, 1 );
+				}
+
+				$ret = $contextTitle->getPrefixedText() . '/' . trim( $noslash ) . $suffix;
+				if ( $text === '' ) {
+					$text = $target . $suffix;
+				} # this might be changed for ugliness reasons
+			} else {
+				# check for .. subpage backlinks
+				$dotdotcount = 0;
+				$nodotdot = $target;
+				while ( strncmp( $nodotdot, "../", 3 ) == 0 ) {
+					++$dotdotcount;
+					$nodotdot = substr( $nodotdot, 3 );
+				}
+				if ( $dotdotcount > 0 ) {
+					$exploded = explode( '/', $contextTitle->getPrefixedText() );
+					if ( count( $exploded ) > $dotdotcount ) { # not allowed to go below top level page
+						$ret = implode( '/', array_slice( $exploded, 0, -$dotdotcount ) );
+						# / at the end means don't show full path
+						if ( substr( $nodotdot, -1, 1 ) === '/' ) {
+							$nodotdot = rtrim( $nodotdot, '/' );
+							if ( $text === '' ) {
+								$text = $nodotdot . $suffix;
+							}
+						}
+						$nodotdot = trim( $nodotdot );
+						if ( $nodotdot != '' ) {
+							$ret .= '/' . $nodotdot;
+						}
+						$ret .= $suffix;
+					}
+				}
+			}
+		}
+
+		return $ret;
+	}
+
+	/**
+	 * Wrap a comment in standard punctuation and formatting if
+	 * it's non-empty, otherwise return empty string.
+	 *
+	 * @since 1.16.3. $wikiId added in 1.26
+	 * @param string $comment
+	 * @param Title|null $title Title object (to generate link to section in autocomment) or null
+	 * @param bool $local Whether section links should refer to local page
+	 * @param string|null $wikiId Id (as used by WikiMap) of the wiki to generate links to.
+	 *  For use with external changes.
+	 *
+	 * @return string
+	 */
+	public static function commentBlock(
+		$comment, $title = null, $local = false, $wikiId = null
+	) {
+		// '*' used to be the comment inserted by the software way back
+		// in antiquity in case none was provided, here for backwards
+		// compatibility, acc. to brion -ævar
+		if ( $comment == '' || $comment == '*' ) {
+			return '';
+		} else {
+			$formatted = self::formatComment( $comment, $title, $local, $wikiId );
+			$formatted = wfMessage( 'parentheses' )->rawParams( $formatted )->escaped();
+			return " <span class=\"comment\">$formatted</span>";
+		}
+	}
+
+	/**
+	 * Wrap and format the given revision's comment block, if the current
+	 * user is allowed to view it.
+	 *
+	 * @since 1.16.3
+	 * @param Revision $rev
+	 * @param bool $local Whether section links should refer to local page
+	 * @param bool $isPublic Show only if all users can see it
+	 * @return string HTML fragment
+	 */
+	public static function revComment( Revision $rev, $local = false, $isPublic = false ) {
+		if ( $rev->getComment( Revision::RAW ) == "" ) {
+			return "";
+		}
+		if ( $rev->isDeleted( Revision::DELETED_COMMENT ) && $isPublic ) {
+			$block = " <span class=\"comment\">" . wfMessage( 'rev-deleted-comment' )->escaped() . "</span>";
+		} elseif ( $rev->userCan( Revision::DELETED_COMMENT ) ) {
+			$block = self::commentBlock( $rev->getComment( Revision::FOR_THIS_USER ),
+				$rev->getTitle(), $local );
+		} else {
+			$block = " <span class=\"comment\">" . wfMessage( 'rev-deleted-comment' )->escaped() . "</span>";
+		}
+		if ( $rev->isDeleted( Revision::DELETED_COMMENT ) ) {
+			return " <span class=\"history-deleted\">$block</span>";
+		}
+		return $block;
+	}
+
+	/**
+	 * @since 1.16.3
+	 * @param int $size
+	 * @return string
+	 */
+	public static function formatRevisionSize( $size ) {
+		if ( $size == 0 ) {
+			$stxt = wfMessage( 'historyempty' )->escaped();
+		} else {
+			$stxt = wfMessage( 'nbytes' )->numParams( $size )->escaped();
+			$stxt = wfMessage( 'parentheses' )->rawParams( $stxt )->escaped();
+		}
+		return "<span class=\"history-size\">$stxt</span>";
+	}
+
+	/**
+	 * Add another level to the Table of Contents
+	 *
+	 * @since 1.16.3
+	 * @return string
+	 */
+	public static function tocIndent() {
+		return "\n<ul>";
+	}
+
+	/**
+	 * Finish one or more sublevels on the Table of Contents
+	 *
+	 * @since 1.16.3
+	 * @param int $level
+	 * @return string
+	 */
+	public static function tocUnindent( $level ) {
+		return "</li>\n" . str_repeat( "</ul>\n</li>\n", $level > 0 ? $level : 0 );
+	}
+
+	/**
+	 * parameter level defines if we are on an indentation level
+	 *
+	 * @since 1.16.3
+	 * @param string $anchor
+	 * @param string $tocline
+	 * @param string $tocnumber
+	 * @param string $level
+	 * @param string|bool $sectionIndex
+	 * @return string
+	 */
+	public static function tocLine( $anchor, $tocline, $tocnumber, $level, $sectionIndex = false ) {
+		$classes = "toclevel-$level";
+		if ( $sectionIndex !== false ) {
+			$classes .= " tocsection-$sectionIndex";
+		}
+
+		// \n<li class="$classes"><a href="#$anchor"><span class="tocnumber">
+		// $tocnumber</span> <span class="toctext">$tocline</span></a>
+		return "\n" . Html::openElement( 'li', [ 'class' => $classes ] )
+			. Html::rawElement( 'a',
+				[ 'href' => "#$anchor" ],
+				Html::element( 'span', [ 'class' => 'tocnumber' ], $tocnumber )
+					. ' '
+					. Html::rawElement( 'span', [ 'class' => 'toctext' ], $tocline )
+			);
+	}
+
+	/**
+	 * End a Table Of Contents line.
+	 * tocUnindent() will be used instead if we're ending a line below
+	 * the new level.
+	 * @since 1.16.3
+	 * @return string
+	 */
+	public static function tocLineEnd() {
+		return "</li>\n";
+	}
+
+	/**
+	 * Wraps the TOC in a table and provides the hide/collapse javascript.
+	 *
+	 * @since 1.16.3
+	 * @param string $toc Html of the Table Of Contents
+	 * @param string|Language|bool $lang Language for the toc title, defaults to user language
+	 * @return string Full html of the TOC
+	 */
+	public static function tocList( $toc, $lang = false ) {
+		$lang = wfGetLangObj( $lang );
+		$title = wfMessage( 'toc' )->inLanguage( $lang )->escaped();
+
+		return '<div id="toc" class="toc">'
+			. Html::openElement( 'div', [
+				'class' => 'toctitle',
+				'lang' => $lang->getHtmlCode(),
+				'dir' => $lang->getDir(),
+			] )
+			. '<h2>' . $title . "</h2></div>\n"
+			. $toc
+			. "</ul>\n</div>\n";
+	}
+
+	/**
+	 * Generate a table of contents from a section tree.
+	 *
+	 * @since 1.16.3. $lang added in 1.17
+	 * @param array $tree Return value of ParserOutput::getSections()
+	 * @param string|Language|bool $lang Language for the toc title, defaults to user language
+	 * @return string HTML fragment
+	 */
+	public static function generateTOC( $tree, $lang = false ) {
+		$toc = '';
+		$lastLevel = 0;
+		foreach ( $tree as $section ) {
+			if ( $section['toclevel'] > $lastLevel ) {
+				$toc .= self::tocIndent();
+			} elseif ( $section['toclevel'] < $lastLevel ) {
+				$toc .= self::tocUnindent(
+					$lastLevel - $section['toclevel'] );
+			} else {
+				$toc .= self::tocLineEnd();
+			}
+
+			$toc .= self::tocLine( $section['anchor'],
+				$section['line'], $section['number'],
+				$section['toclevel'], $section['index'] );
+			$lastLevel = $section['toclevel'];
+		}
+		$toc .= self::tocLineEnd();
+		return self::tocList( $toc, $lang );
+	}
+
+	/**
+	 * Create a headline for content
+	 *
+	 * @since 1.16.3
+	 * @param int $level The level of the headline (1-6)
+	 * @param string $attribs Any attributes for the headline, starting with
+	 *   a space and ending with '>'
+	 *   This *must* be at least '>' for no attribs
+	 * @param string $anchor The anchor to give the headline (the bit after the #)
+	 * @param string $html HTML for the text of the header
+	 * @param string $link HTML to add for the section edit link
+	 * @param string|bool $fallbackAnchor A second, optional anchor to give for
+	 *   backward compatibility (false to omit)
+	 *
+	 * @return string HTML headline
+	 */
+	public static function makeHeadline( $level, $attribs, $anchor, $html,
+		$link, $fallbackAnchor = false
+	) {
+		$anchorEscaped = htmlspecialchars( $anchor );
+		$fallback = '';
+		if ( $fallbackAnchor !== false && $fallbackAnchor !== $anchor ) {
+			$fallbackAnchor = htmlspecialchars( $fallbackAnchor );
+			$fallback = "<span id=\"$fallbackAnchor\"></span>";
+		}
+		$ret = "<h$level$attribs"
+			. "$fallback<span class=\"mw-headline\" id=\"$anchorEscaped\">$html</span>"
+			. $link
+			. "</h$level>";
+
+		return $ret;
+	}
+
+	/**
+	 * Split a link trail, return the "inside" portion and the remainder of the trail
+	 * as a two-element array
+	 * @param string $trail
+	 * @return array
+	 */
+	static function splitTrail( $trail ) {
+		global $wgContLang;
+		$regex = $wgContLang->linkTrail();
+		$inside = '';
+		if ( $trail !== '' ) {
+			$m = [];
+			if ( preg_match( $regex, $trail, $m ) ) {
+				$inside = $m[1];
+				$trail = $m[2];
+			}
+		}
+		return [ $inside, $trail ];
+	}
+
+	/**
+	 * Generate a rollback link for a given revision.  Currently it's the
+	 * caller's responsibility to ensure that the revision is the top one. If
+	 * it's not, of course, the user will get an error message.
+	 *
+	 * If the calling page is called with the parameter &bot=1, all rollback
+	 * links also get that parameter. It causes the edit itself and the rollback
+	 * to be marked as "bot" edits. Bot edits are hidden by default from recent
+	 * changes, so this allows sysops to combat a busy vandal without bothering
+	 * other users.
+	 *
+	 * If the option verify is set this function will return the link only in case the
+	 * revision can be reverted. Please note that due to performance limitations
+	 * it might be assumed that a user isn't the only contributor of a page while
+	 * (s)he is, which will lead to useless rollback links. Furthermore this wont
+	 * work if $wgShowRollbackEditCount is disabled, so this can only function
+	 * as an additional check.
+	 *
+	 * If the option noBrackets is set the rollback link wont be enclosed in "[]".
+	 *
+	 * @since 1.16.3. $context added in 1.20. $options added in 1.21
+	 *
+	 * @param Revision $rev
+	 * @param IContextSource $context Context to use or null for the main context.
+	 * @param array $options
+	 * @return string
+	 */
+	public static function generateRollback( $rev, IContextSource $context = null,
+		$options = [ 'verify' ]
+	) {
+		if ( $context === null ) {
+			$context = RequestContext::getMain();
+		}
+
+		$editCount = false;
+		if ( in_array( 'verify', $options, true ) ) {
+			$editCount = self::getRollbackEditCount( $rev, true );
+			if ( $editCount === false ) {
+				return '';
+			}
+		}
+
+		$inner = self::buildRollbackLink( $rev, $context, $editCount );
+
+		if ( !in_array( 'noBrackets', $options, true ) ) {
+			$inner = $context->msg( 'brackets' )->rawParams( $inner )->escaped();
+		}
+
+		return '<span class="mw-rollback-link">' . $inner . '</span>';
+	}
+
+	/**
+	 * This function will return the number of revisions which a rollback
+	 * would revert and, if $verify is set it will verify that a revision
+	 * can be reverted (that the user isn't the only contributor and the
+	 * revision we might rollback to isn't deleted). These checks can only
+	 * function as an additional check as this function only checks against
+	 * the last $wgShowRollbackEditCount edits.
+	 *
+	 * Returns null if $wgShowRollbackEditCount is disabled or false if $verify
+	 * is set and the user is the only contributor of the page.
+	 *
+	 * @param Revision $rev
+	 * @param bool $verify Try to verify that this revision can really be rolled back
+	 * @return int|bool|null
+	 */
+	public static function getRollbackEditCount( $rev, $verify ) {
+		global $wgShowRollbackEditCount;
+		if ( !is_int( $wgShowRollbackEditCount ) || !$wgShowRollbackEditCount > 0 ) {
+			// Nothing has happened, indicate this by returning 'null'
+			return null;
+		}
+
+		$dbr = wfGetDB( DB_REPLICA );
+
+		// Up to the value of $wgShowRollbackEditCount revisions are counted
+		$revQuery = Revision::getQueryInfo();
+		$res = $dbr->select(
+			$revQuery['tables'],
+			[ 'rev_user_text' => $revQuery['fields']['rev_user_text'], 'rev_deleted' ],
+			// $rev->getPage() returns null sometimes
+			[ 'rev_page' => $rev->getTitle()->getArticleID() ],
+			__METHOD__,
+			[
+				'USE INDEX' => [ 'revision' => 'page_timestamp' ],
+				'ORDER BY' => 'rev_timestamp DESC',
+				'LIMIT' => $wgShowRollbackEditCount + 1
+			],
+			$revQuery['joins']
+		);
+
+		$editCount = 0;
+		$moreRevs = false;
+		foreach ( $res as $row ) {
+			if ( $rev->getUserText( Revision::RAW ) != $row->rev_user_text ) {
+				if ( $verify &&
+					( $row->rev_deleted & Revision::DELETED_TEXT
+						|| $row->rev_deleted & Revision::DELETED_USER
+				) ) {
+					// If the user or the text of the revision we might rollback
+					// to is deleted in some way we can't rollback. Similar to
+					// the sanity checks in WikiPage::commitRollback.
+					return false;
+				}
+				$moreRevs = true;
+				break;
+			}
+			$editCount++;
+		}
+
+		if ( $verify && $editCount <= $wgShowRollbackEditCount && !$moreRevs ) {
+			// We didn't find at least $wgShowRollbackEditCount revisions made by the current user
+			// and there weren't any other revisions. That means that the current user is the only
+			// editor, so we can't rollback
+			return false;
+		}
+		return $editCount;
+	}
+
+	/**
+	 * Build a raw rollback link, useful for collections of "tool" links
+	 *
+	 * @since 1.16.3. $context added in 1.20. $editCount added in 1.21
+	 * @param Revision $rev
+	 * @param IContextSource|null $context Context to use or null for the main context.
+	 * @param int $editCount Number of edits that would be reverted
+	 * @return string HTML fragment
+	 */
+	public static function buildRollbackLink( $rev, IContextSource $context = null,
+		$editCount = false
+	) {
+		global $wgShowRollbackEditCount, $wgMiserMode;
+
+		// To config which pages are affected by miser mode
+		$disableRollbackEditCountSpecialPage = [ 'Recentchanges', 'Watchlist' ];
+
+		if ( $context === null ) {
+			$context = RequestContext::getMain();
+		}
+
+		$title = $rev->getTitle();
+		$query = [
+			'action' => 'rollback',
+			'from' => $rev->getUserText(),
+			'token' => $context->getUser()->getEditToken( 'rollback' ),
+		];
+		$attrs = [
+			'data-mw' => 'interface',
+			'title' => $context->msg( 'tooltip-rollback' )->text(),
+		];
+		$options = [ 'known', 'noclasses' ];
+
+		if ( $context->getRequest()->getBool( 'bot' ) ) {
+			$query['bot'] = '1';
+			$query['hidediff'] = '1'; // T17999
+		}
+
+		$disableRollbackEditCount = false;
+		if ( $wgMiserMode ) {
+			foreach ( $disableRollbackEditCountSpecialPage as $specialPage ) {
+				if ( $context->getTitle()->isSpecial( $specialPage ) ) {
+					$disableRollbackEditCount = true;
+					break;
+				}
+			}
+		}
+
+		if ( !$disableRollbackEditCount
+			&& is_int( $wgShowRollbackEditCount )
+			&& $wgShowRollbackEditCount > 0
+		) {
+			if ( !is_numeric( $editCount ) ) {
+				$editCount = self::getRollbackEditCount( $rev, false );
+			}
+
+			if ( $editCount > $wgShowRollbackEditCount ) {
+				$html = $context->msg( 'rollbacklinkcount-morethan' )
+					->numParams( $wgShowRollbackEditCount )->parse();
+			} else {
+				$html = $context->msg( 'rollbacklinkcount' )->numParams( $editCount )->parse();
+			}
+
+			return self::link( $title, $html, $attrs, $query, $options );
+		} else {
+			$html = $context->msg( 'rollbacklink' )->escaped();
+			return self::link( $title, $html, $attrs, $query, $options );
+		}
+	}
+
+	/**
+	 * @deprecated since 1.28, use TemplatesOnThisPageFormatter directly
+	 *
+	 * Returns HTML for the "templates used on this page" list.
+	 *
+	 * Make an HTML list of templates, and then add a "More..." link at
+	 * the bottom. If $more is null, do not add a "More..." link. If $more
+	 * is a Title, make a link to that title and use it. If $more is a string,
+	 * directly paste it in as the link (escaping needs to be done manually).
+	 * Finally, if $more is a Message, call toString().
+	 *
+	 * @since 1.16.3. $more added in 1.21
+	 * @param Title[] $templates Array of templates
+	 * @param bool $preview Whether this is for a preview
+	 * @param bool $section Whether this is for a section edit
+	 * @param Title|Message|string|null $more An escaped link for "More..." of the templates
+	 * @return string HTML output
+	 */
+	public static function formatTemplates( $templates, $preview = false,
+		$section = false, $more = null
+	) {
+		wfDeprecated( __METHOD__, '1.28' );
+
+		$type = false;
+		if ( $preview ) {
+			$type = 'preview';
+		} elseif ( $section ) {
+			$type = 'section';
+		}
+
+		if ( $more instanceof Message ) {
+			$more = $more->toString();
+		}
+
+		$formatter = new TemplatesOnThisPageFormatter(
+			RequestContext::getMain(),
+			MediaWikiServices::getInstance()->getLinkRenderer()
+		);
+		return $formatter->format( $templates, $type, $more );
+	}
+
+	/**
+	 * Returns HTML for the "hidden categories on this page" list.
+	 *
+	 * @since 1.16.3
+	 * @param array $hiddencats Array of hidden categories from Article::getHiddenCategories
+	 *   or similar
+	 * @return string HTML output
+	 */
+	public static function formatHiddenCategories( $hiddencats ) {
+		$outText = '';
+		if ( count( $hiddencats ) > 0 ) {
+			# Construct the HTML
+			$outText = '<div class="mw-hiddenCategoriesExplanation">';
+			$outText .= wfMessage( 'hiddencategories' )->numParams( count( $hiddencats ) )->parseAsBlock();
+			$outText .= "</div><ul>\n";
+
+			foreach ( $hiddencats as $titleObj ) {
+				# If it's hidden, it must exist - no need to check with a LinkBatch
+				$outText .= '<li>'
+					. self::link( $titleObj, null, [], [], 'known' )
+					. "</li>\n";
+			}
+			$outText .= '</ul>';
+		}
+		return $outText;
+	}
+
+	/**
+	 * @deprecated since 1.28, use Language::formatSize() directly
+	 *
+	 * Format a size in bytes for output, using an appropriate
+	 * unit (B, KB, MB or GB) according to the magnitude in question
+	 *
+	 * @since 1.16.3
+	 * @param int $size Size to format
+	 * @return string
+	 */
+	public static function formatSize( $size ) {
+		wfDeprecated( __METHOD__, '1.28' );
+
+		global $wgLang;
+		return htmlspecialchars( $wgLang->formatSize( $size ) );
+	}
+
+	/**
+	 * Given the id of an interface element, constructs the appropriate title
+	 * attribute from the system messages.  (Note, this is usually the id but
+	 * isn't always, because sometimes the accesskey needs to go on a different
+	 * element than the id, for reverse-compatibility, etc.)
+	 *
+	 * @since 1.16.3 $msgParams added in 1.27
+	 * @param string $name Id of the element, minus prefixes.
+	 * @param string|array|null $options Null, string or array with some of the following options:
+	 *   - 'withaccess' to add an access-key hint
+	 *   - 'nonexisting' to add an accessibility hint that page does not exist
+	 * @param array $msgParams Parameters to pass to the message
+	 *
+	 * @return string Contents of the title attribute (which you must HTML-
+	 *   escape), or false for no title attribute
+	 */
+	public static function titleAttrib( $name, $options = null, array $msgParams = [] ) {
+		$message = wfMessage( "tooltip-$name", $msgParams );
+		if ( !$message->exists() ) {
+			$tooltip = false;
+		} else {
+			$tooltip = $message->text();
+			# Compatibility: formerly some tooltips had [alt-.] hardcoded
+			$tooltip = preg_replace( "/ ?\[alt-.\]$/", '', $tooltip );
+			# Message equal to '-' means suppress it.
+			if ( $tooltip == '-' ) {
+				$tooltip = false;
+			}
+		}
+
+		$options = (array)$options;
+
+		if ( in_array( 'nonexisting', $options ) ) {
+			$tooltip = wfMessage( 'red-link-title', $tooltip ?: '' )->text();
+		}
+		if ( in_array( 'withaccess', $options ) ) {
+			$accesskey = self::accesskey( $name );
+			if ( $accesskey !== false ) {
+				// Should be build the same as in jquery.accessKeyLabel.js
+				if ( $tooltip === false || $tooltip === '' ) {
+					$tooltip = wfMessage( 'brackets', $accesskey )->text();
+				} else {
+					$tooltip .= wfMessage( 'word-separator' )->text();
+					$tooltip .= wfMessage( 'brackets', $accesskey )->text();
+				}
+			}
+		}
+
+		return $tooltip;
+	}
+
+	public static $accesskeycache;
+
+	/**
+	 * Given the id of an interface element, constructs the appropriate
+	 * accesskey attribute from the system messages.  (Note, this is usually
+	 * the id but isn't always, because sometimes the accesskey needs to go on
+	 * a different element than the id, for reverse-compatibility, etc.)
+	 *
+	 * @since 1.16.3
+	 * @param string $name Id of the element, minus prefixes.
+	 * @return string Contents of the accesskey attribute (which you must HTML-
+	 *   escape), or false for no accesskey attribute
+	 */
+	public static function accesskey( $name ) {
+		if ( isset( self::$accesskeycache[$name] ) ) {
+			return self::$accesskeycache[$name];
+		}
+
+		$message = wfMessage( "accesskey-$name" );
+
+		if ( !$message->exists() ) {
+			$accesskey = false;
+		} else {
+			$accesskey = $message->plain();
+			if ( $accesskey === '' || $accesskey === '-' ) {
+				# @todo FIXME: Per standard MW behavior, a value of '-' means to suppress the
+				# attribute, but this is broken for accesskey: that might be a useful
+				# value.
+				$accesskey = false;
+			}
+		}
+
+		self::$accesskeycache[$name] = $accesskey;
+		return self::$accesskeycache[$name];
+	}
+
+	/**
+	 * Get a revision-deletion link, or disabled link, or nothing, depending
+	 * on user permissions & the settings on the revision.
+	 *
+	 * Will use forward-compatible revision ID in the Special:RevDelete link
+	 * if possible, otherwise the timestamp-based ID which may break after
+	 * undeletion.
+	 *
+	 * @param User $user
+	 * @param Revision $rev
+	 * @param Title $title
+	 * @return string HTML fragment
+	 */
+	public static function getRevDeleteLink( User $user, Revision $rev, Title $title ) {
+		$canHide = $user->isAllowed( 'deleterevision' );
+		if ( !$canHide && !( $rev->getVisibility() && $user->isAllowed( 'deletedhistory' ) ) ) {
+			return '';
+		}
+
+		if ( !$rev->userCan( Revision::DELETED_RESTRICTED, $user ) ) {
+			return self::revDeleteLinkDisabled( $canHide ); // revision was hidden from sysops
+		} else {
+			if ( $rev->getId() ) {
+				// RevDelete links using revision ID are stable across
+				// page deletion and undeletion; use when possible.
+				$query = [
+					'type' => 'revision',
+					'target' => $title->getPrefixedDBkey(),
+					'ids' => $rev->getId()
+				];
+			} else {
+				// Older deleted entries didn't save a revision ID.
+				// We have to refer to these by timestamp, ick!
+				$query = [
+					'type' => 'archive',
+					'target' => $title->getPrefixedDBkey(),
+					'ids' => $rev->getTimestamp()
+				];
+			}
+			return self::revDeleteLink( $query,
+				$rev->isDeleted( Revision::DELETED_RESTRICTED ), $canHide );
+		}
+	}
+
+	/**
+	 * Creates a (show/hide) link for deleting revisions/log entries
+	 *
+	 * @param array $query Query parameters to be passed to link()
+	 * @param bool $restricted Set to true to use a "<strong>" instead of a "<span>"
+	 * @param bool $delete Set to true to use (show/hide) rather than (show)
+	 *
+	 * @return string HTML "<a>" link to Special:Revisiondelete, wrapped in a
+	 * span to allow for customization of appearance with CSS
+	 */
+	public static function revDeleteLink( $query = [], $restricted = false, $delete = true ) {
+		$sp = SpecialPage::getTitleFor( 'Revisiondelete' );
+		$msgKey = $delete ? 'rev-delundel' : 'rev-showdeleted';
+		$html = wfMessage( $msgKey )->escaped();
+		$tag = $restricted ? 'strong' : 'span';
+		$link = self::link( $sp, $html, [], $query, [ 'known', 'noclasses' ] );
+		return Xml::tags(
+			$tag,
+			[ 'class' => 'mw-revdelundel-link' ],
+			wfMessage( 'parentheses' )->rawParams( $link )->escaped()
+		);
+	}
+
+	/**
+	 * Creates a dead (show/hide) link for deleting revisions/log entries
+	 *
+	 * @since 1.16.3
+	 * @param bool $delete Set to true to use (show/hide) rather than (show)
+	 *
+	 * @return string HTML text wrapped in a span to allow for customization
+	 * of appearance with CSS
+	 */
+	public static function revDeleteLinkDisabled( $delete = true ) {
+		$msgKey = $delete ? 'rev-delundel' : 'rev-showdeleted';
+		$html = wfMessage( $msgKey )->escaped();
+		$htmlParentheses = wfMessage( 'parentheses' )->rawParams( $html )->escaped();
+		return Xml::tags( 'span', [ 'class' => 'mw-revdelundel-link' ], $htmlParentheses );
+	}
+
+	/**
+	 * Returns the attributes for the tooltip and access key.
+	 *
+	 * @since 1.16.3. $msgParams introduced in 1.27
+	 * @param string $name
+	 * @param array $msgParams Params for constructing the message
+	 * @param string|array|null $options Options to be passed to titleAttrib.
+	 *
+	 * @see Linker::titleAttrib for what options could be passed to $options.
+	 *
+	 * @return array
+	 */
+	public static function tooltipAndAccesskeyAttribs(
+		$name,
+		array $msgParams = [],
+		$options = null
+	) {
+		$options = (array)$options;
+		$options[] = 'withaccess';
+
+		$attribs = [
+			'title' => self::titleAttrib( $name, $options, $msgParams ),
+			'accesskey' => self::accesskey( $name )
+		];
+		if ( $attribs['title'] === false ) {
+			unset( $attribs['title'] );
+		}
+		if ( $attribs['accesskey'] === false ) {
+			unset( $attribs['accesskey'] );
+		}
+		return $attribs;
+	}
+
+	/**
+	 * Returns raw bits of HTML, use titleAttrib()
+	 * @since 1.16.3
+	 * @param string $name
+	 * @param array|null $options
+	 * @return null|string
+	 */
+	public static function tooltip( $name, $options = null ) {
+		$tooltip = self::titleAttrib( $name, $options );
+		if ( $tooltip === false ) {
+			return '';
+		}
+		return Xml::expandAttributes( [
+			'title' => $tooltip
+		] );
+	}
+
+}