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diff --git a/www/wiki/includes/CategoryViewer.php b/www/wiki/includes/CategoryViewer.php
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+<?php
+/**
+ * List and paging of category members.
+ *
+ * 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\MediaWikiServices;
+
+class CategoryViewer extends ContextSource {
+	/** @var int */
+	public $limit;
+
+	/** @var array */
+	public $from;
+
+	/** @var array */
+	public $until;
+
+	/** @var string[] */
+	public $articles;
+
+	/** @var array */
+	public $articles_start_char;
+
+	/** @var array */
+	public $children;
+
+	/** @var array */
+	public $children_start_char;
+
+	/** @var bool */
+	public $showGallery;
+
+	/** @var array */
+	public $imgsNoGallery_start_char;
+
+	/** @var array */
+	public $imgsNoGallery;
+
+	/** @var array */
+	public $nextPage;
+
+	/** @var array */
+	protected $prevPage;
+
+	/** @var array */
+	public $flip;
+
+	/** @var Title */
+	public $title;
+
+	/** @var Collation */
+	public $collation;
+
+	/** @var ImageGalleryBase */
+	public $gallery;
+
+	/** @var Category Category object for this page. */
+	private $cat;
+
+	/** @var array The original query array, to be used in generating paging links. */
+	private $query;
+
+	/**
+	 * @since 1.19 $context is a second, required parameter
+	 * @param Title $title
+	 * @param IContextSource $context
+	 * @param array $from An array with keys page, subcat,
+	 *        and file for offset of results of each section (since 1.17)
+	 * @param array $until An array with 3 keys for until of each section (since 1.17)
+	 * @param array $query
+	 */
+	function __construct( $title, IContextSource $context, $from = [],
+		$until = [], $query = []
+	) {
+		$this->title = $title;
+		$this->setContext( $context );
+		$this->getOutput()->addModuleStyles( [
+			'mediawiki.action.view.categoryPage.styles'
+		] );
+		$this->from = $from;
+		$this->until = $until;
+		$this->limit = $context->getConfig()->get( 'CategoryPagingLimit' );
+		$this->cat = Category::newFromTitle( $title );
+		$this->query = $query;
+		$this->collation = Collation::singleton();
+		unset( $this->query['title'] );
+	}
+
+	/**
+	 * Format the category data list.
+	 *
+	 * @return string HTML output
+	 */
+	public function getHTML() {
+		$this->showGallery = $this->getConfig()->get( 'CategoryMagicGallery' )
+			&& !$this->getOutput()->mNoGallery;
+
+		$this->clearCategoryState();
+		$this->doCategoryQuery();
+		$this->finaliseCategoryState();
+
+		$r = $this->getSubcategorySection() .
+			$this->getPagesSection() .
+			$this->getImageSection();
+
+		if ( $r == '' ) {
+			// If there is no category content to display, only
+			// show the top part of the navigation links.
+			// @todo FIXME: Cannot be completely suppressed because it
+			//        is unknown if 'until' or 'from' makes this
+			//        give 0 results.
+			$r = $r . $this->getCategoryTop();
+		} else {
+			$r = $this->getCategoryTop() .
+				$r .
+				$this->getCategoryBottom();
+		}
+
+		// Give a proper message if category is empty
+		if ( $r == '' ) {
+			$r = $this->msg( 'category-empty' )->parseAsBlock();
+		}
+
+		$lang = $this->getLanguage();
+		$attribs = [
+			'class' => 'mw-category-generated',
+			'lang' => $lang->getHtmlCode(),
+			'dir' => $lang->getDir()
+		];
+		# put a div around the headings which are in the user language
+		$r = Html::openElement( 'div', $attribs ) . $r . '</div>';
+
+		return $r;
+	}
+
+	function clearCategoryState() {
+		$this->articles = [];
+		$this->articles_start_char = [];
+		$this->children = [];
+		$this->children_start_char = [];
+		if ( $this->showGallery ) {
+			// Note that null for mode is taken to mean use default.
+			$mode = $this->getRequest()->getVal( 'gallerymode', null );
+			try {
+				$this->gallery = ImageGalleryBase::factory( $mode, $this->getContext() );
+			} catch ( Exception $e ) {
+				// User specified something invalid, fallback to default.
+				$this->gallery = ImageGalleryBase::factory( false, $this->getContext() );
+			}
+
+			$this->gallery->setHideBadImages();
+		} else {
+			$this->imgsNoGallery = [];
+			$this->imgsNoGallery_start_char = [];
+		}
+	}
+
+	/**
+	 * Add a subcategory to the internal lists, using a Category object
+	 * @param Category $cat
+	 * @param string $sortkey
+	 * @param int $pageLength
+	 */
+	function addSubcategoryObject( Category $cat, $sortkey, $pageLength ) {
+		// Subcategory; strip the 'Category' namespace from the link text.
+		$title = $cat->getTitle();
+
+		$this->children[] = $this->generateLink(
+			'subcat',
+			$title,
+			$title->isRedirect(),
+			htmlspecialchars( $title->getText() )
+		);
+
+		$this->children_start_char[] =
+			$this->getSubcategorySortChar( $cat->getTitle(), $sortkey );
+	}
+
+	function generateLink( $type, Title $title, $isRedirect, $html = null ) {
+		$link = null;
+		Hooks::run( 'CategoryViewer::generateLink', [ $type, $title, $html, &$link ] );
+		if ( $link === null ) {
+			$linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
+			if ( $html !== null ) {
+				$html = new HtmlArmor( $html );
+			}
+			$link = $linkRenderer->makeLink( $title, $html );
+		}
+		if ( $isRedirect ) {
+			$link = '<span class="redirect-in-category">' . $link . '</span>';
+		}
+
+		return $link;
+	}
+
+	/**
+	 * Get the character to be used for sorting subcategories.
+	 * If there's a link from Category:A to Category:B, the sortkey of the resulting
+	 * entry in the categorylinks table is Category:A, not A, which it SHOULD be.
+	 * Workaround: If sortkey == "Category:".$title, than use $title for sorting,
+	 * else use sortkey...
+	 *
+	 * @param Title $title
+	 * @param string $sortkey The human-readable sortkey (before transforming to icu or whatever).
+	 * @return string
+	 */
+	function getSubcategorySortChar( $title, $sortkey ) {
+		global $wgContLang;
+
+		if ( $title->getPrefixedText() == $sortkey ) {
+			$word = $title->getDBkey();
+		} else {
+			$word = $sortkey;
+		}
+
+		$firstChar = $this->collation->getFirstLetter( $word );
+
+		return $wgContLang->convert( $firstChar );
+	}
+
+	/**
+	 * Add a page in the image namespace
+	 * @param Title $title
+	 * @param string $sortkey
+	 * @param int $pageLength
+	 * @param bool $isRedirect
+	 */
+	function addImage( Title $title, $sortkey, $pageLength, $isRedirect = false ) {
+		global $wgContLang;
+		if ( $this->showGallery ) {
+			$flip = $this->flip['file'];
+			if ( $flip ) {
+				$this->gallery->insert( $title );
+			} else {
+				$this->gallery->add( $title );
+			}
+		} else {
+			$this->imgsNoGallery[] = $this->generateLink( 'image', $title, $isRedirect );
+
+			$this->imgsNoGallery_start_char[] = $wgContLang->convert(
+				$this->collation->getFirstLetter( $sortkey ) );
+		}
+	}
+
+	/**
+	 * Add a miscellaneous page
+	 * @param Title $title
+	 * @param string $sortkey
+	 * @param int $pageLength
+	 * @param bool $isRedirect
+	 */
+	function addPage( $title, $sortkey, $pageLength, $isRedirect = false ) {
+		global $wgContLang;
+
+		$this->articles[] = $this->generateLink( 'page', $title, $isRedirect );
+
+		$this->articles_start_char[] = $wgContLang->convert(
+			$this->collation->getFirstLetter( $sortkey ) );
+	}
+
+	function finaliseCategoryState() {
+		if ( $this->flip['subcat'] ) {
+			$this->children = array_reverse( $this->children );
+			$this->children_start_char = array_reverse( $this->children_start_char );
+		}
+		if ( $this->flip['page'] ) {
+			$this->articles = array_reverse( $this->articles );
+			$this->articles_start_char = array_reverse( $this->articles_start_char );
+		}
+		if ( !$this->showGallery && $this->flip['file'] ) {
+			$this->imgsNoGallery = array_reverse( $this->imgsNoGallery );
+			$this->imgsNoGallery_start_char = array_reverse( $this->imgsNoGallery_start_char );
+		}
+	}
+
+	function doCategoryQuery() {
+		$dbr = wfGetDB( DB_REPLICA, 'category' );
+
+		$this->nextPage = [
+			'page' => null,
+			'subcat' => null,
+			'file' => null,
+		];
+		$this->prevPage = [
+			'page' => null,
+			'subcat' => null,
+			'file' => null,
+		];
+
+		$this->flip = [ 'page' => false, 'subcat' => false, 'file' => false ];
+
+		foreach ( [ 'page', 'subcat', 'file' ] as $type ) {
+			# Get the sortkeys for start/end, if applicable.  Note that if
+			# the collation in the database differs from the one
+			# set in $wgCategoryCollation, pagination might go totally haywire.
+			$extraConds = [ 'cl_type' => $type ];
+			if ( isset( $this->from[$type] ) && $this->from[$type] !== null ) {
+				$extraConds[] = 'cl_sortkey >= '
+					. $dbr->addQuotes( $this->collation->getSortKey( $this->from[$type] ) );
+			} elseif ( isset( $this->until[$type] ) && $this->until[$type] !== null ) {
+				$extraConds[] = 'cl_sortkey < '
+					. $dbr->addQuotes( $this->collation->getSortKey( $this->until[$type] ) );
+				$this->flip[$type] = true;
+			}
+
+			$res = $dbr->select(
+				[ 'page', 'categorylinks', 'category' ],
+				array_merge(
+					LinkCache::getSelectFields(),
+					[
+						'page_namespace',
+						'page_title',
+						'cl_sortkey',
+						'cat_id',
+						'cat_title',
+						'cat_subcats',
+						'cat_pages',
+						'cat_files',
+						'cl_sortkey_prefix',
+						'cl_collation'
+					]
+				),
+				array_merge( [ 'cl_to' => $this->title->getDBkey() ], $extraConds ),
+				__METHOD__,
+				[
+					'USE INDEX' => [ 'categorylinks' => 'cl_sortkey' ],
+					'LIMIT' => $this->limit + 1,
+					'ORDER BY' => $this->flip[$type] ? 'cl_sortkey DESC' : 'cl_sortkey',
+				],
+				[
+					'categorylinks' => [ 'INNER JOIN', 'cl_from = page_id' ],
+					'category' => [ 'LEFT JOIN', [
+						'cat_title = page_title',
+						'page_namespace' => NS_CATEGORY
+					] ]
+				]
+			);
+
+			Hooks::run( 'CategoryViewer::doCategoryQuery', [ $type, $res ] );
+			$linkCache = MediaWikiServices::getInstance()->getLinkCache();
+
+			$count = 0;
+			foreach ( $res as $row ) {
+				$title = Title::newFromRow( $row );
+				$linkCache->addGoodLinkObjFromRow( $title, $row );
+
+				if ( $row->cl_collation === '' ) {
+					// Hack to make sure that while updating from 1.16 schema
+					// and db is inconsistent, that the sky doesn't fall.
+					// See r83544. Could perhaps be removed in a couple decades...
+					$humanSortkey = $row->cl_sortkey;
+				} else {
+					$humanSortkey = $title->getCategorySortkey( $row->cl_sortkey_prefix );
+				}
+
+				if ( ++$count > $this->limit ) {
+					# We've reached the one extra which shows that there
+					# are additional pages to be had. Stop here...
+					$this->nextPage[$type] = $humanSortkey;
+					break;
+				}
+				if ( $count == $this->limit ) {
+					$this->prevPage[$type] = $humanSortkey;
+				}
+
+				if ( $title->getNamespace() == NS_CATEGORY ) {
+					$cat = Category::newFromRow( $row, $title );
+					$this->addSubcategoryObject( $cat, $humanSortkey, $row->page_len );
+				} elseif ( $title->getNamespace() == NS_FILE ) {
+					$this->addImage( $title, $humanSortkey, $row->page_len, $row->page_is_redirect );
+				} else {
+					$this->addPage( $title, $humanSortkey, $row->page_len, $row->page_is_redirect );
+				}
+			}
+		}
+	}
+
+	/**
+	 * @return string
+	 */
+	function getCategoryTop() {
+		$r = $this->getCategoryBottom();
+		return $r === ''
+			? $r
+			: "<br style=\"clear:both;\"/>\n" . $r;
+	}
+
+	/**
+	 * @return string
+	 */
+	function getSubcategorySection() {
+		# Don't show subcategories section if there are none.
+		$r = '';
+		$rescnt = count( $this->children );
+		$dbcnt = $this->cat->getSubcatCount();
+		// This function should be called even if the result isn't used, it has side-effects
+		$countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'subcat' );
+
+		if ( $rescnt > 0 ) {
+			# Showing subcategories
+			$r .= "<div id=\"mw-subcategories\">\n";
+			$r .= '<h2>' . $this->msg( 'subcategories' )->parse() . "</h2>\n";
+			$r .= $countmsg;
+			$r .= $this->getSectionPagingLinks( 'subcat' );
+			$r .= $this->formatList( $this->children, $this->children_start_char );
+			$r .= $this->getSectionPagingLinks( 'subcat' );
+			$r .= "\n</div>";
+		}
+		return $r;
+	}
+
+	/**
+	 * @return string
+	 */
+	function getPagesSection() {
+		$ti = wfEscapeWikiText( $this->title->getText() );
+		# Don't show articles section if there are none.
+		$r = '';
+
+		# @todo FIXME: Here and in the other two sections: we don't need to bother
+		# with this rigmarole if the entire category contents fit on one page
+		# and have already been retrieved.  We can just use $rescnt in that
+		# case and save a query and some logic.
+		$dbcnt = $this->cat->getPageCount() - $this->cat->getSubcatCount()
+			- $this->cat->getFileCount();
+		$rescnt = count( $this->articles );
+		// This function should be called even if the result isn't used, it has side-effects
+		$countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'article' );
+
+		if ( $rescnt > 0 ) {
+			$r = "<div id=\"mw-pages\">\n";
+			$r .= '<h2>' . $this->msg( 'category_header', $ti )->parse() . "</h2>\n";
+			$r .= $countmsg;
+			$r .= $this->getSectionPagingLinks( 'page' );
+			$r .= $this->formatList( $this->articles, $this->articles_start_char );
+			$r .= $this->getSectionPagingLinks( 'page' );
+			$r .= "\n</div>";
+		}
+		return $r;
+	}
+
+	/**
+	 * @return string
+	 */
+	function getImageSection() {
+		$r = '';
+		$rescnt = $this->showGallery ? $this->gallery->count() : count( $this->imgsNoGallery );
+		$dbcnt = $this->cat->getFileCount();
+		// This function should be called even if the result isn't used, it has side-effects
+		$countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'file' );
+
+		if ( $rescnt > 0 ) {
+			$r .= "<div id=\"mw-category-media\">\n";
+			$r .= '<h2>' .
+				$this->msg(
+					'category-media-header',
+					wfEscapeWikiText( $this->title->getText() )
+				)->text() .
+				"</h2>\n";
+			$r .= $countmsg;
+			$r .= $this->getSectionPagingLinks( 'file' );
+			if ( $this->showGallery ) {
+				$r .= $this->gallery->toHTML();
+			} else {
+				$r .= $this->formatList( $this->imgsNoGallery, $this->imgsNoGallery_start_char );
+			}
+			$r .= $this->getSectionPagingLinks( 'file' );
+			$r .= "\n</div>";
+		}
+		return $r;
+	}
+
+	/**
+	 * Get the paging links for a section (subcats/pages/files), to go at the top and bottom
+	 * of the output.
+	 *
+	 * @param string $type 'page', 'subcat', or 'file'
+	 * @return string HTML output, possibly empty if there are no other pages
+	 */
+	private function getSectionPagingLinks( $type ) {
+		if ( isset( $this->until[$type] ) && $this->until[$type] !== null ) {
+			// The new value for the until parameter should be pointing to the first
+			// result displayed on the page which is the second last result retrieved
+			// from the database.The next link should have a from parameter pointing
+			// to the until parameter of the current page.
+			if ( $this->nextPage[$type] !== null ) {
+				return $this->pagingLinks( $this->prevPage[$type], $this->until[$type], $type );
+			} else {
+				// If the nextPage variable is null, it means that we have reached the first page
+				// and therefore the previous link should be disabled.
+				return $this->pagingLinks( null, $this->until[$type], $type );
+			}
+		} elseif ( $this->nextPage[$type] !== null
+			|| ( isset( $this->from[$type] ) && $this->from[$type] !== null )
+		) {
+			return $this->pagingLinks( $this->from[$type], $this->nextPage[$type], $type );
+		} else {
+			return '';
+		}
+	}
+
+	/**
+	 * @return string
+	 */
+	function getCategoryBottom() {
+		return '';
+	}
+
+	/**
+	 * Format a list of articles chunked by letter, either as a
+	 * bullet list or a columnar format, depending on the length.
+	 *
+	 * @param array $articles
+	 * @param array $articles_start_char
+	 * @param int $cutoff
+	 * @return string
+	 * @private
+	 */
+	function formatList( $articles, $articles_start_char, $cutoff = 6 ) {
+		$list = '';
+		if ( count( $articles ) > $cutoff ) {
+			$list = self::columnList( $articles, $articles_start_char );
+		} elseif ( count( $articles ) > 0 ) {
+			// for short lists of articles in categories.
+			$list = self::shortList( $articles, $articles_start_char );
+		}
+
+		$pageLang = $this->title->getPageLanguage();
+		$attribs = [ 'lang' => $pageLang->getHtmlCode(), 'dir' => $pageLang->getDir(),
+			'class' => 'mw-content-' . $pageLang->getDir() ];
+		$list = Html::rawElement( 'div', $attribs, $list );
+
+		return $list;
+	}
+
+	/**
+	 * Format a list of articles chunked by letter in a three-column list, ordered
+	 * vertically. This is used for categories with a significant number of pages.
+	 *
+	 * TODO: Take the headers into account when creating columns, so they're
+	 * more visually equal.
+	 *
+	 * TODO: shortList and columnList are similar, need merging
+	 *
+	 * @param string[] $articles HTML links to each article
+	 * @param string[] $articles_start_char The header characters for each article
+	 * @return string HTML to output
+	 * @private
+	 */
+	static function columnList( $articles, $articles_start_char ) {
+		$columns = array_combine( $articles, $articles_start_char );
+
+		$ret = Html::openElement( 'div', [ 'class' => 'mw-category' ] );
+
+		$colContents = [];
+
+		# Kind of like array_flip() here, but we keep duplicates in an
+		# array instead of dropping them.
+		foreach ( $columns as $article => $char ) {
+			if ( !isset( $colContents[$char] ) ) {
+				$colContents[$char] = [];
+			}
+			$colContents[$char][] = $article;
+		}
+
+		foreach ( $colContents as $char => $articles ) {
+			# Change space to non-breaking space to keep headers aligned
+			$h3char = $char === ' ' ? '&#160;' : htmlspecialchars( $char );
+
+			$ret .= '<div class="mw-category-group"><h3>' . $h3char;
+			$ret .= "</h3>\n";
+
+			$ret .= '<ul><li>';
+			$ret .= implode( "</li>\n<li>", $articles );
+			$ret .= '</li></ul></div>';
+
+		}
+
+		$ret .= Html::closeElement( 'div' );
+		return $ret;
+	}
+
+	/**
+	 * Format a list of articles chunked by letter in a bullet list. This is used
+	 * for categories with a small number of pages (when columns aren't needed).
+	 * @param string[] $articles HTML links to each article
+	 * @param string[] $articles_start_char The header characters for each article
+	 * @return string HTML to output
+	 * @private
+	 */
+	static function shortList( $articles, $articles_start_char ) {
+		$r = '<h3>' . htmlspecialchars( $articles_start_char[0] ) . "</h3>\n";
+		$r .= '<ul><li>' . $articles[0] . '</li>';
+		$articleCount = count( $articles );
+		for ( $index = 1; $index < $articleCount; $index++ ) {
+			if ( $articles_start_char[$index] != $articles_start_char[$index - 1] ) {
+				$r .= "</ul><h3>" . htmlspecialchars( $articles_start_char[$index] ) . "</h3>\n<ul>";
+			}
+
+			$r .= "<li>{$articles[$index]}</li>";
+		}
+		$r .= '</ul>';
+		return $r;
+	}
+
+	/**
+	 * Create paging links, as a helper method to getSectionPagingLinks().
+	 *
+	 * @param string $first The 'until' parameter for the generated URL
+	 * @param string $last The 'from' parameter for the generated URL
+	 * @param string $type A prefix for parameters, 'page' or 'subcat' or
+	 *     'file'
+	 * @return string HTML
+	 */
+	private function pagingLinks( $first, $last, $type = '' ) {
+		$prevLink = $this->msg( 'prev-page' )->escaped();
+
+		$linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
+		if ( $first != '' ) {
+			$prevQuery = $this->query;
+			$prevQuery["{$type}until"] = $first;
+			unset( $prevQuery["{$type}from"] );
+			$prevLink = $linkRenderer->makeKnownLink(
+				$this->addFragmentToTitle( $this->title, $type ),
+				new HtmlArmor( $prevLink ),
+				[],
+				$prevQuery
+			);
+		}
+
+		$nextLink = $this->msg( 'next-page' )->escaped();
+
+		if ( $last != '' ) {
+			$lastQuery = $this->query;
+			$lastQuery["{$type}from"] = $last;
+			unset( $lastQuery["{$type}until"] );
+			$nextLink = $linkRenderer->makeKnownLink(
+				$this->addFragmentToTitle( $this->title, $type ),
+				new HtmlArmor( $nextLink ),
+				[],
+				$lastQuery
+			);
+		}
+
+		return $this->msg( 'categoryviewer-pagedlinks' )->rawParams( $prevLink, $nextLink )->escaped();
+	}
+
+	/**
+	 * Takes a title, and adds the fragment identifier that
+	 * corresponds to the correct segment of the category.
+	 *
+	 * @param Title $title The title (usually $this->title)
+	 * @param string $section Which section
+	 * @throws MWException
+	 * @return Title
+	 */
+	private function addFragmentToTitle( $title, $section ) {
+		switch ( $section ) {
+			case 'page':
+				$fragment = 'mw-pages';
+				break;
+			case 'subcat':
+				$fragment = 'mw-subcategories';
+				break;
+			case 'file':
+				$fragment = 'mw-category-media';
+				break;
+			default:
+				throw new MWException( __METHOD__ .
+					" Invalid section $section." );
+		}
+
+		return Title::makeTitle( $title->getNamespace(),
+			$title->getDBkey(), $fragment );
+	}
+
+	/**
+	 * What to do if the category table conflicts with the number of results
+	 * returned?  This function says what. Each type is considered independently
+	 * of the other types.
+	 *
+	 * @param int $rescnt The number of items returned by our database query.
+	 * @param int $dbcnt The number of items according to the category table.
+	 * @param string $type 'subcat', 'article', or 'file'
+	 * @return string A message giving the number of items, to output to HTML.
+	 */
+	private function getCountMessage( $rescnt, $dbcnt, $type ) {
+		// There are three cases:
+		//   1) The category table figure seems sane.  It might be wrong, but
+		//      we can't do anything about it if we don't recalculate it on ev-
+		//      ery category view.
+		//   2) The category table figure isn't sane, like it's smaller than the
+		//      number of actual results, *but* the number of results is less
+		//      than $this->limit and there's no offset.  In this case we still
+		//      know the right figure.
+		//   3) We have no idea.
+
+		// Check if there's a "from" or "until" for anything
+
+		// This is a little ugly, but we seem to use different names
+		// for the paging types then for the messages.
+		if ( $type === 'article' ) {
+			$pagingType = 'page';
+		} else {
+			$pagingType = $type;
+		}
+
+		$fromOrUntil = false;
+		if ( ( isset( $this->from[$pagingType] ) && $this->from[$pagingType] !== null ) ||
+			( isset( $this->until[$pagingType] ) && $this->until[$pagingType] !== null )
+		) {
+			$fromOrUntil = true;
+		}
+
+		if ( $dbcnt == $rescnt ||
+			( ( $rescnt == $this->limit || $fromOrUntil ) && $dbcnt > $rescnt )
+		) {
+			// Case 1: seems sane.
+			$totalcnt = $dbcnt;
+		} elseif ( $rescnt < $this->limit && !$fromOrUntil ) {
+			// Case 2: not sane, but salvageable.  Use the number of results.
+			// Since there are fewer than 200, we can also take this opportunity
+			// to refresh the incorrect category table entry -- which should be
+			// quick due to the small number of entries.
+			$totalcnt = $rescnt;
+			DeferredUpdates::addCallableUpdate( [ $this->cat, 'refreshCounts' ] );
+		} else {
+			// Case 3: hopeless.  Don't give a total count at all.
+			// Messages: category-subcat-count-limited, category-article-count-limited,
+			// category-file-count-limited
+			return $this->msg( "category-$type-count-limited" )->numParams( $rescnt )->parseAsBlock();
+		}
+		// Messages: category-subcat-count, category-article-count, category-file-count
+		return $this->msg( "category-$type-count" )->numParams( $rescnt, $totalcnt )->parseAsBlock();
+	}
+}