maintenance/namespaceDupes.php

   1 <?php
   2 /**
   3  * Check for articles to fix after adding/deleting namespaces
   4  *
   5  * Copyright © 2005-2007 Brion Vibber <brion@pobox.com>
   6  * https://www.mediawiki.org/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  * http://www.gnu.org/copyleft/gpl.html
  22  *
  23  * @file
  24  * @ingroup Maintenance
  25  */
  26
  27 use MediaWiki\Linker\LinkTarget;
  28 use MediaWiki\MediaWikiServices;
  29
  30 require_once __DIR__ . '/Maintenance.php';
  31
  32 /**
  33  * Maintenance script that checks for articles to fix after
  34  * adding/deleting namespaces.
  35  *
  36  * @ingroup Maintenance
  37  */
  38 class NamespaceConflictChecker extends Maintenance {
  39
  40         /**
  41          * @var Database
  42          */
  43         protected $db;
  44
  45         private $resolvablePages = 0;
  46         private $totalPages = 0;
  47
  48         private $resolvableLinks = 0;
  49         private $totalLinks = 0;
  50
  51         public function __construct() {
  52                 parent::__construct();
  53                 $this->addDescription( 'Find and fix pages affected by namespace addition/removal' );
  54                 $this->addOption( 'fix', 'Attempt to automatically fix errors' );
  55                 $this->addOption( 'merge', "Instead of renaming conflicts, do a history merge with " .
  56                         "the correct title" );
  57                 $this->addOption( 'add-suffix', "Dupes will be renamed with correct namespace with " .
  58                         "<text> appended after the article name", false, true );
  59                 $this->addOption( 'add-prefix', "Dupes will be renamed with correct namespace with " .
  60                         "<text> prepended before the article name", false, true );
  61                 $this->addOption( 'source-pseudo-namespace', "Move all pages with the given source " .
  62                         "prefix (with an implied colon following it). If --dest-namespace is not specified, " .
  63                         "the colon will be replaced with a hyphen.",
  64                         false, true );
  65                 $this->addOption( 'dest-namespace', "In combination with --source-pseudo-namespace, " .
  66                         "specify the namespace ID of the destination.", false, true );
  67                 $this->addOption( 'move-talk', "If this is specified, pages in the Talk namespace that " .
  68                         "begin with a conflicting prefix will be renamed, for example " .
  69                         "Talk:File:Foo -> File_Talk:Foo" );
  70         }
  71
  72         public function execute() {
  73                 $this->db = $this->getDB( DB_MASTER );
  74
  75                 $options = [
  76                         'fix' => $this->hasOption( 'fix' ),
  77                         'merge' => $this->hasOption( 'merge' ),
  78                         'add-suffix' => $this->getOption( 'add-suffix', '' ),
  79                         'add-prefix' => $this->getOption( 'add-prefix', '' ),
  80                         'move-talk' => $this->hasOption( 'move-talk' ),
  81                         'source-pseudo-namespace' => $this->getOption( 'source-pseudo-namespace', '' ),
  82                         'dest-namespace' => intval( $this->getOption( 'dest-namespace', 0 ) ) ];
  83
  84                 if ( $options['source-pseudo-namespace'] !== '' ) {
  85                         $retval = $this->checkPrefix( $options );
  86                 } else {
  87                         $retval = $this->checkAll( $options );
  88                 }
  89
  90                 if ( $retval ) {
  91                         $this->output( "\nLooks good!\n" );
  92                 } else {
  93                         $this->output( "\nOh noeees\n" );
  94                 }
  95         }
  96
  97         /**
  98          * Check all namespaces
  99          *
 100          * @param array $options Associative array of validated command-line options
 101          *
 102          * @return bool
 103          */
 104         private function checkAll( $options ) {
 105                 global $wgContLang, $wgNamespaceAliases, $wgCapitalLinks;
 106
 107                 $spaces = [];
 108
 109                 // List interwikis first, so they'll be overridden
 110                 // by any conflicting local namespaces.
 111                 foreach ( $this->getInterwikiList() as $prefix ) {
 112                         $name = $wgContLang->ucfirst( $prefix );
 113                         $spaces[$name] = 0;
 114                 }
 115
 116                 // Now pull in all canonical and alias namespaces...
 117                 foreach ( MWNamespace::getCanonicalNamespaces() as $ns => $name ) {
 118                         // This includes $wgExtraNamespaces
 119                         if ( $name !== '' ) {
 120                                 $spaces[$name] = $ns;
 121                         }
 122                 }
 123                 foreach ( $wgContLang->getNamespaces() as $ns => $name ) {
 124                         if ( $name !== '' ) {
 125                                 $spaces[$name] = $ns;
 126                         }
 127                 }
 128                 foreach ( $wgNamespaceAliases as $name => $ns ) {
 129                         $spaces[$name] = $ns;
 130                 }
 131                 foreach ( $wgContLang->getNamespaceAliases() as $name => $ns ) {
 132                         $spaces[$name] = $ns;
 133                 }
 134
 135                 // We'll need to check for lowercase keys as well,
 136                 // since we're doing case-sensitive searches in the db.
 137                 foreach ( $spaces as $name => $ns ) {
 138                         $moreNames = [];
 139                         $moreNames[] = $wgContLang->uc( $name );
 140                         $moreNames[] = $wgContLang->ucfirst( $wgContLang->lc( $name ) );
 141                         $moreNames[] = $wgContLang->ucwords( $name );
 142                         $moreNames[] = $wgContLang->ucwords( $wgContLang->lc( $name ) );
 143                         $moreNames[] = $wgContLang->ucwordbreaks( $name );
 144                         $moreNames[] = $wgContLang->ucwordbreaks( $wgContLang->lc( $name ) );
 145                         if ( !$wgCapitalLinks ) {
 146                                 foreach ( $moreNames as $altName ) {
 147                                         $moreNames[] = $wgContLang->lcfirst( $altName );
 148                                 }
 149                                 $moreNames[] = $wgContLang->lcfirst( $name );
 150                         }
 151                         foreach ( array_unique( $moreNames ) as $altName ) {
 152                                 if ( $altName !== $name ) {
 153                                         $spaces[$altName] = $ns;
 154                                 }
 155                         }
 156                 }
 157
 158                 // Sort by namespace index, and if there are two with the same index,
 159                 // break the tie by sorting by name
 160                 $origSpaces = $spaces;
 161                 uksort( $spaces, function ( $a, $b ) use ( $origSpaces ) {
 162                         if ( $origSpaces[$a] < $origSpaces[$b] ) {
 163                                 return -1;
 164                         } elseif ( $origSpaces[$a] > $origSpaces[$b] ) {
 165                                 return 1;
 166                         } elseif ( $a < $b ) {
 167                                 return -1;
 168                         } elseif ( $a > $b ) {
 169                                 return 1;
 170                         } else {
 171                                 return 0;
 172                         }
 173                 } );
 174
 175                 $ok = true;
 176                 foreach ( $spaces as $name => $ns ) {
 177                         $ok = $this->checkNamespace( $ns, $name, $options ) && $ok;
 178                 }
 179
 180                 $this->output( "{$this->totalPages} pages to fix, " .
 181                         "{$this->resolvablePages} were resolvable.\n\n" );
 182
 183                 foreach ( $spaces as $name => $ns ) {
 184                         if ( $ns != 0 ) {
 185                                 /* Fix up link destinations for non-interwiki links only.
 186                                  *
 187                                  * For example if a page has [[Foo:Bar]] and then a Foo namespace
 188                                  * is introduced, pagelinks needs to be updated to have
 189                                  * page_namespace = NS_FOO.
 190                                  *
 191                                  * If instead an interwiki prefix was introduced called "Foo",
 192                                  * the link should instead be moved to the iwlinks table. If a new
 193                                  * language is introduced called "Foo", or if there is a pagelink
 194                                  * [[fr:Bar]] when interlanguage magic links are turned on, the
 195                                  * link would have to be moved to the langlinks table. Let's put
 196                                  * those cases in the too-hard basket for now. The consequences are
 197                                  * not especially severe.
 198                                  * @fixme Handle interwiki links, and pagelinks to Category:, File:
 199                                  * which probably need reparsing.
 200                                  */
 201
 202                                 $this->checkLinkTable( 'pagelinks', 'pl', $ns, $name, $options );
 203                                 $this->checkLinkTable( 'templatelinks', 'tl', $ns, $name, $options );
 204
 205                                 // The redirect table has interwiki links randomly mixed in, we
 206                                 // need to filter those out. For example [[w:Foo:Bar]] would
 207                                 // have rd_interwiki=w and rd_namespace=0, which would match the
 208                                 // query for a conflicting namespace "Foo" if filtering wasn't done.
 209                                 $this->checkLinkTable( 'redirect', 'rd', $ns, $name, $options,
 210                                         [ 'rd_interwiki' => null ] );
 211                                 $this->checkLinkTable( 'redirect', 'rd', $ns, $name, $options,
 212                                         [ 'rd_interwiki' => '' ] );
 213                         }
 214                 }
 215
 216                 $this->output( "{$this->totalLinks} links to fix, " .
 217                         "{$this->resolvableLinks} were resolvable.\n" );
 218
 219                 return $ok;
 220         }
 221
 222         /**
 223          * Get the interwiki list
 224          *
 225          * @return array
 226          */
 227         private function getInterwikiList() {
 228                 $result = MediaWikiServices::getInstance()->getInterwikiLookup()->getAllPrefixes();
 229                 $prefixes = [];
 230                 foreach ( $result as $row ) {
 231                         $prefixes[] = $row['iw_prefix'];
 232                 }
 233
 234                 return $prefixes;
 235         }
 236
 237         /**
 238          * Check a given prefix and try to move it into the given destination namespace
 239          *
 240          * @param int $ns Destination namespace id
 241          * @param string $name
 242          * @param array $options Associative array of validated command-line options
 243          * @return bool
 244          */
 245         private function checkNamespace( $ns, $name, $options ) {
 246                 $targets = $this->getTargetList( $ns, $name, $options );
 247                 $count = $targets->numRows();
 248                 $this->totalPages += $count;
 249                 if ( $count == 0 ) {
 250                         return true;
 251                 }
 252
 253                 $dryRunNote = $options['fix'] ? '' : ' DRY RUN ONLY';
 254
 255                 $ok = true;
 256                 foreach ( $targets as $row ) {
 257
 258                         // Find the new title and determine the action to take
 259
 260                         $newTitle = $this->getDestinationTitle( $ns, $name,
 261                                 $row->page_namespace, $row->page_title, $options );
 262                         $logStatus = false;
 263                         if ( !$newTitle ) {
 264                                 $logStatus = 'invalid title';
 265                                 $action = 'abort';
 266                         } elseif ( $newTitle->exists() ) {
 267                                 if ( $options['merge'] ) {
 268                                         if ( $this->canMerge( $row->page_id, $newTitle, $logStatus ) ) {
 269                                                 $action = 'merge';
 270                                         } else {
 271                                                 $action = 'abort';
 272                                         }
 273                                 } elseif ( $options['add-prefix'] == '' && $options['add-suffix'] == '' ) {
 274                                         $action = 'abort';
 275                                         $logStatus = 'dest title exists and --add-prefix not specified';
 276                                 } else {
 277                                         $newTitle = $this->getAlternateTitle( $newTitle, $options );
 278                                         if ( !$newTitle ) {
 279                                                 $action = 'abort';
 280                                                 $logStatus = 'alternate title is invalid';
 281                                         } elseif ( $newTitle->exists() ) {
 282                                                 $action = 'abort';
 283                                                 $logStatus = 'title conflict';
 284                                         } else {
 285                                                 $action = 'move';
 286                                                 $logStatus = 'alternate';
 287                                         }
 288                                 }
 289                         } else {
 290                                 $action = 'move';
 291                                 $logStatus = 'no conflict';
 292                         }
 293
 294                         // Take the action or log a dry run message
 295
 296                         $logTitle = "id={$row->page_id} ns={$row->page_namespace} dbk={$row->page_title}";
 297                         $pageOK = true;
 298
 299                         switch ( $action ) {
 300                                 case 'abort':
 301                                         $this->output( "$logTitle *** $logStatus\n" );
 302                                         $pageOK = false;
 303                                         break;
 304                                 case 'move':
 305                                         $this->output( "$logTitle -> " .
 306                                                 $newTitle->getPrefixedDBkey() . " ($logStatus)$dryRunNote\n" );
 307
 308                                         if ( $options['fix'] ) {
 309                                                 $pageOK = $this->movePage( $row->page_id, $newTitle );
 310                                         }
 311                                         break;
 312                                 case 'merge':
 313                                         $this->output( "$logTitle => " .
 314                                                 $newTitle->getPrefixedDBkey() . " (merge)$dryRunNote\n" );
 315
 316                                         if ( $options['fix'] ) {
 317                                                 $pageOK = $this->mergePage( $row, $newTitle );
 318                                         }
 319                                         break;
 320                         }
 321
 322                         if ( $pageOK ) {
 323                                 $this->resolvablePages++;
 324                         } else {
 325                                 $ok = false;
 326                         }
 327                 }
 328
 329                 return $ok;
 330         }
 331
 332         /**
 333          * Check and repair the destination fields in a link table
 334          * @param string $table The link table name
 335          * @param string $fieldPrefix The field prefix in the link table
 336          * @param int $ns Destination namespace id
 337          * @param string $name
 338          * @param array $options Associative array of validated command-line options
 339          * @param array $extraConds Extra conditions for the SQL query
 340          */
 341         private function checkLinkTable( $table, $fieldPrefix, $ns, $name, $options,
 342                 $extraConds = []
 343         ) {
 344                 $batchConds = [];
 345                 $fromField = "{$fieldPrefix}_from";
 346                 $namespaceField = "{$fieldPrefix}_namespace";
 347                 $titleField = "{$fieldPrefix}_title";
 348                 $batchSize = 500;
 349                 while ( true ) {
 350                         $res = $this->db->select(
 351                                 $table,
 352                                 [ $fromField, $namespaceField, $titleField ],
 353                                 array_merge( $batchConds, $extraConds, [
 354                                         $namespaceField => 0,
 355                                         $titleField . $this->db->buildLike( "$name:", $this->db->anyString() )
 356                                 ] ),
 357                                 __METHOD__,
 358                                 [
 359                                         'ORDER BY' => [ $titleField, $fromField ],
 360                                         'LIMIT' => $batchSize
 361                                 ]
 362                         );
 363
 364                         if ( $res->numRows() == 0 ) {
 365                                 break;
 366                         }
 367                         foreach ( $res as $row ) {
 368                                 $logTitle = "from={$row->$fromField} ns={$row->$namespaceField} " .
 369                                         "dbk={$row->$titleField}";
 370                                 $destTitle = $this->getDestinationTitle( $ns, $name,
 371                                         $row->$namespaceField, $row->$titleField, $options );
 372                                 $this->totalLinks++;
 373                                 if ( !$destTitle ) {
 374                                         $this->output( "$table $logTitle *** INVALID\n" );
 375                                         continue;
 376                                 }
 377                                 $this->resolvableLinks++;
 378                                 if ( !$options['fix'] ) {
 379                                         $this->output( "$table $logTitle -> " .
 380                                                 $destTitle->getPrefixedDBkey() . " DRY RUN\n" );
 381                                         continue;
 382                                 }
 383
 384                                 $this->db->update( $table,
 385                                         // SET
 386                                         [
 387                                                 $namespaceField => $destTitle->getNamespace(),
 388                                                 $titleField => $destTitle->getDBkey()
 389                                         ],
 390                                         // WHERE
 391                                         [
 392                                                 $namespaceField => 0,
 393                                                 $titleField => $row->$titleField,
 394                                                 $fromField => $row->$fromField
 395                                         ],
 396                                         __METHOD__,
 397                                         [ 'IGNORE' ]
 398                                 );
 399                                 $this->output( "$table $logTitle -> " .
 400                                         $destTitle->getPrefixedDBkey() . "\n" );
 401                         }
 402                         $encLastTitle = $this->db->addQuotes( $row->$titleField );
 403                         $encLastFrom = $this->db->addQuotes( $row->$fromField );
 404
 405                         $batchConds = [
 406                                 "$titleField > $encLastTitle " .
 407                                 "OR ($titleField = $encLastTitle AND $fromField > $encLastFrom)" ];
 408
 409                         wfWaitForSlaves();
 410                 }
 411         }
 412
 413         /**
 414          * Move the given pseudo-namespace, either replacing the colon with a hyphen
 415          * (useful for pseudo-namespaces that conflict with interwiki links) or move
 416          * them to another namespace if specified.
 417          * @param array $options Associative array of validated command-line options
 418          * @return bool
 419          */
 420         private function checkPrefix( $options ) {
 421                 $prefix = $options['source-pseudo-namespace'];
 422                 $ns = $options['dest-namespace'];
 423                 $this->output( "Checking prefix \"$prefix\" vs namespace $ns\n" );
 424
 425                 return $this->checkNamespace( $ns, $prefix, $options );
 426         }
 427
 428         /**
 429          * Find pages in main and talk namespaces that have a prefix of the new
 430          * namespace so we know titles that will need migrating
 431          *
 432          * @param int $ns Destination namespace id
 433          * @param string $name Prefix that is being made a namespace
 434          * @param array $options Associative array of validated command-line options
 435          *
 436          * @return ResultWrapper
 437          */
 438         private function getTargetList( $ns, $name, $options ) {
 439                 if ( $options['move-talk'] && MWNamespace::isSubject( $ns ) ) {
 440                         $checkNamespaces = [ NS_MAIN, NS_TALK ];
 441                 } else {
 442                         $checkNamespaces = NS_MAIN;
 443                 }
 444
 445                 return $this->db->select( 'page',
 446                         [
 447                                 'page_id',
 448                                 'page_title',
 449                                 'page_namespace',
 450                         ],
 451                         [
 452                                 'page_namespace' => $checkNamespaces,
 453                                 'page_title' . $this->db->buildLike( "$name:", $this->db->anyString() ),
 454                         ],
 455                         __METHOD__
 456                 );
 457         }
 458
 459         /**
 460          * Get the preferred destination title for a given target page.
 461          * @param integer $ns The destination namespace ID
 462          * @param string $name The conflicting prefix
 463          * @param integer $sourceNs The source namespace
 464          * @param integer $sourceDbk The source DB key (i.e. page_title)
 465          * @param array $options Associative array of validated command-line options
 466          * @return Title|false
 467          */
 468         private function getDestinationTitle( $ns, $name, $sourceNs, $sourceDbk, $options ) {
 469                 $dbk = substr( $sourceDbk, strlen( "$name:" ) );
 470                 if ( $ns == 0 ) {
 471                         // An interwiki; try an alternate encoding with '-' for ':'
 472                         $dbk = "$name-" . $dbk;
 473                 }
 474                 $destNS = $ns;
 475                 if ( $sourceNs == NS_TALK && MWNamespace::isSubject( $ns ) ) {
 476                         // This is an associated talk page moved with the --move-talk feature.
 477                         $destNS = MWNamespace::getTalk( $destNS );
 478                 }
 479                 $newTitle = Title::makeTitleSafe( $destNS, $dbk );
 480                 if ( !$newTitle || !$newTitle->canExist() ) {
 481                         return false;
 482                 }
 483                 return $newTitle;
 484         }
 485
 486         /**
 487          * Get an alternative title to move a page to. This is used if the
 488          * preferred destination title already exists.
 489          *
 490          * @param LinkTarget $linkTarget
 491          * @param array $options Associative array of validated command-line options
 492          * @return Title|bool
 493          */
 494         private function getAlternateTitle( LinkTarget $linkTarget, $options ) {
 495                 $prefix = $options['add-prefix'];
 496                 $suffix = $options['add-suffix'];
 497                 if ( $prefix == '' && $suffix == '' ) {
 498                         return false;
 499                 }
 500                 while ( true ) {
 501                         $dbk = $prefix . $linkTarget->getDBkey() . $suffix;
 502                         $title = Title::makeTitleSafe( $linkTarget->getNamespace(), $dbk );
 503                         if ( !$title ) {
 504                                 return false;
 505                         }
 506                         if ( !$title->exists() ) {
 507                                 return $title;
 508                         }
 509                 }
 510         }
 511
 512         /**
 513          * Move a page
 514          *
 515          * @param integer $id The page_id
 516          * @param LinkTarget $newLinkTarget The new title link target
 517          * @return bool
 518          */
 519         private function movePage( $id, LinkTarget $newLinkTarget ) {
 520                 $this->db->update( 'page',
 521                         [
 522                                 "page_namespace" => $newLinkTarget->getNamespace(),
 523                                 "page_title" => $newLinkTarget->getDBkey(),
 524                         ],
 525                         [
 526                                 "page_id" => $id,
 527                         ],
 528                         __METHOD__ );
 529
 530                 // Update *_from_namespace in links tables
 531                 $fromNamespaceTables = [
 532                         [ 'pagelinks', 'pl' ],
 533                         [ 'templatelinks', 'tl' ],
 534                         [ 'imagelinks', 'il' ] ];
 535                 foreach ( $fromNamespaceTables as $tableInfo ) {
 536                         list( $table, $fieldPrefix ) = $tableInfo;
 537                         $this->db->update( $table,
 538                                 // SET
 539                                 [ "{$fieldPrefix}_from_namespace" => $newLinkTarget->getNamespace() ],
 540                                 // WHERE
 541                                 [ "{$fieldPrefix}_from" => $id ],
 542                                 __METHOD__ );
 543                 }
 544
 545                 return true;
 546         }
 547
 548         /**
 549          * Determine if we can merge a page.
 550          * We check if an inaccessible revision would become the latest and
 551          * deny the merge if so -- it's theoretically possible to update the
 552          * latest revision, but opens a can of worms -- search engine updates,
 553          * recentchanges review, etc.
 554          *
 555          * @param integer $id The page_id
 556          * @param LinkTarget $linkTarget The new link target
 557          * @param string $logStatus This is set to the log status message on failure
 558          * @return bool
 559          */
 560         private function canMerge( $id, LinkTarget $linkTarget, &$logStatus ) {
 561                 $latestDest = Revision::newFromTitle( $linkTarget, 0, Revision::READ_LATEST );
 562                 $latestSource = Revision::newFromPageId( $id, 0, Revision::READ_LATEST );
 563                 if ( $latestSource->getTimestamp() > $latestDest->getTimestamp() ) {
 564                         $logStatus = 'cannot merge since source is later';
 565                         return false;
 566                 } else {
 567                         return true;
 568                 }
 569         }
 570
 571         /**
 572          * Merge page histories
 573          *
 574          * @param integer $id The page_id
 575          * @param Title $newTitle The new title
 576          * @return bool
 577          */
 578         private function mergePage( $row, Title $newTitle ) {
 579                 $id = $row->page_id;
 580
 581                 // Construct the WikiPage object we will need later, while the
 582                 // page_id still exists. Note that this cannot use makeTitleSafe(),
 583                 // we are deliberately constructing an invalid title.
 584                 $sourceTitle = Title::makeTitle( $row->page_namespace, $row->page_title );
 585                 $sourceTitle->resetArticleID( $id );
 586                 $wikiPage = new WikiPage( $sourceTitle );
 587                 $wikiPage->loadPageData( 'fromdbmaster' );
 588
 589                 $destId = $newTitle->getArticleID();
 590                 $this->beginTransaction( $this->db, __METHOD__ );
 591                 $this->db->update( 'revision',
 592                         // SET
 593                         [ 'rev_page' => $destId ],
 594                         // WHERE
 595                         [ 'rev_page' => $id ],
 596                         __METHOD__ );
 597
 598                 $this->db->delete( 'page', [ 'page_id' => $id ], __METHOD__ );
 599
 600                 $this->commitTransaction( $this->db, __METHOD__ );
 601
 602                 /* Call LinksDeletionUpdate to delete outgoing links from the old title,
 603                  * and update category counts.
 604                  *
 605                  * Calling external code with a fake broken Title is a fairly dubious
 606                  * idea. It's necessary because it's quite a lot of code to duplicate,
 607                  * but that also makes it fragile since it would be easy for someone to
 608                  * accidentally introduce an assumption of title validity to the code we
 609                  * are calling.
 610                  */
 611                 DeferredUpdates::addUpdate( new LinksDeletionUpdate( $wikiPage ) );
 612                 DeferredUpdates::doUpdates();
 613
 614                 return true;
 615         }
 616 }
 617
 618 $maintClass = "NamespaceConflictChecker";
 619 require_once RUN_MAINTENANCE_IF_MAIN;