MediaWiki  REL1_31
ResourceLoaderStartUpModule.php
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1 <?php
37 
38  // Cache for getConfigSettings() as it's called by multiple methods
39  protected $configVars = [];
40  protected $targets = [ 'desktop', 'mobile' ];
41 
46  protected function getConfigSettings( $context ) {
47  $hash = $context->getHash();
48  if ( isset( $this->configVars[$hash] ) ) {
49  return $this->configVars[$hash];
50  }
51 
53  $conf = $this->getConfig();
54 
55  // We can't use Title::newMainPage() if 'mainpage' is in
56  // $wgForceUIMsgAsContentMsg because that will try to use the session
57  // user's language and we have no session user. This does the
58  // equivalent but falling back to our ResourceLoaderContext language
59  // instead.
60  $mainPage = Title::newFromText( $context->msg( 'mainpage' )->inContentLanguage()->text() );
61  if ( !$mainPage ) {
62  $mainPage = Title::newFromText( 'Main Page' );
63  }
64 
70  $namespaceIds = $wgContLang->getNamespaceIds();
71  $caseSensitiveNamespaces = [];
72  foreach ( MWNamespace::getCanonicalNamespaces() as $index => $name ) {
73  $namespaceIds[$wgContLang->lc( $name )] = $index;
74  if ( !MWNamespace::isCapitalized( $index ) ) {
75  $caseSensitiveNamespaces[] = $index;
76  }
77  }
78 
79  $illegalFileChars = $conf->get( 'IllegalFileChars' );
80  $oldCommentSchema = $conf->get( 'CommentTableSchemaMigrationStage' ) === MIGRATION_OLD;
81 
82  // Build list of variables
83  $vars = [
84  'wgLoadScript' => wfScript( 'load' ),
85  'debug' => $context->getDebug(),
86  'skin' => $context->getSkin(),
87  'stylepath' => $conf->get( 'StylePath' ),
88  'wgUrlProtocols' => wfUrlProtocols(),
89  'wgArticlePath' => $conf->get( 'ArticlePath' ),
90  'wgScriptPath' => $conf->get( 'ScriptPath' ),
91  'wgScript' => wfScript(),
92  'wgSearchType' => $conf->get( 'SearchType' ),
93  'wgVariantArticlePath' => $conf->get( 'VariantArticlePath' ),
94  // Force object to avoid "empty" associative array from
95  // becoming [] instead of {} in JS (T36604)
96  'wgActionPaths' => (object)$conf->get( 'ActionPaths' ),
97  'wgServer' => $conf->get( 'Server' ),
98  'wgServerName' => $conf->get( 'ServerName' ),
99  'wgUserLanguage' => $context->getLanguage(),
100  'wgContentLanguage' => $wgContLang->getCode(),
101  'wgTranslateNumerals' => $conf->get( 'TranslateNumerals' ),
102  'wgVersion' => $conf->get( 'Version' ),
103  'wgEnableAPI' => $conf->get( 'EnableAPI' ),
104  'wgEnableWriteAPI' => $conf->get( 'EnableWriteAPI' ),
105  'wgMainPageTitle' => $mainPage->getPrefixedText(),
106  'wgFormattedNamespaces' => $wgContLang->getFormattedNamespaces(),
107  'wgNamespaceIds' => $namespaceIds,
108  'wgContentNamespaces' => MWNamespace::getContentNamespaces(),
109  'wgSiteName' => $conf->get( 'Sitename' ),
110  'wgDBname' => $conf->get( 'DBname' ),
111  'wgExtraSignatureNamespaces' => $conf->get( 'ExtraSignatureNamespaces' ),
112  'wgAvailableSkins' => Skin::getSkinNames(),
113  'wgExtensionAssetsPath' => $conf->get( 'ExtensionAssetsPath' ),
114  // MediaWiki sets cookies to have this prefix by default
115  'wgCookiePrefix' => $conf->get( 'CookiePrefix' ),
116  'wgCookieDomain' => $conf->get( 'CookieDomain' ),
117  'wgCookiePath' => $conf->get( 'CookiePath' ),
118  'wgCookieExpiration' => $conf->get( 'CookieExpiration' ),
119  'wgResourceLoaderMaxQueryLength' => $conf->get( 'ResourceLoaderMaxQueryLength' ),
120  'wgCaseSensitiveNamespaces' => $caseSensitiveNamespaces,
121  'wgLegalTitleChars' => Title::convertByteClassToUnicodeClass( Title::legalChars() ),
122  'wgIllegalFileChars' => Title::convertByteClassToUnicodeClass( $illegalFileChars ),
123  'wgResourceLoaderStorageVersion' => $conf->get( 'ResourceLoaderStorageVersion' ),
124  'wgResourceLoaderStorageEnabled' => $conf->get( 'ResourceLoaderStorageEnabled' ),
125  'wgForeignUploadTargets' => $conf->get( 'ForeignUploadTargets' ),
126  'wgEnableUploads' => $conf->get( 'EnableUploads' ),
127  'wgCommentByteLimit' => $oldCommentSchema ? 255 : null,
128  'wgCommentCodePointLimit' => $oldCommentSchema ? null : CommentStore::COMMENT_CHARACTER_LIMIT,
129  ];
130 
131  Hooks::run( 'ResourceLoaderGetConfigVars', [ &$vars ] );
132 
133  $this->configVars[$hash] = $vars;
134  return $this->configVars[$hash];
135  }
136 
144  protected static function getImplicitDependencies( array $registryData, $moduleName ) {
145  static $dependencyCache = [];
146 
147  // The list of implicit dependencies won't be altered, so we can
148  // cache them without having to worry.
149  if ( !isset( $dependencyCache[$moduleName] ) ) {
150  if ( !isset( $registryData[$moduleName] ) ) {
151  // Dependencies may not exist
152  $dependencyCache[$moduleName] = [];
153  } else {
154  $data = $registryData[$moduleName];
155  $dependencyCache[$moduleName] = $data['dependencies'];
156 
157  foreach ( $data['dependencies'] as $dependency ) {
158  // Recursively get the dependencies of the dependencies
159  $dependencyCache[$moduleName] = array_merge(
160  $dependencyCache[$moduleName],
161  self::getImplicitDependencies( $registryData, $dependency )
162  );
163  }
164  }
165  }
166 
167  return $dependencyCache[$moduleName];
168  }
169 
188  public static function compileUnresolvedDependencies( array &$registryData ) {
189  foreach ( $registryData as $name => &$data ) {
190  $dependencies = $data['dependencies'];
191  foreach ( $data['dependencies'] as $dependency ) {
192  $implicitDependencies = self::getImplicitDependencies( $registryData, $dependency );
193  $dependencies = array_diff( $dependencies, $implicitDependencies );
194  }
195  // Rebuild keys
196  $data['dependencies'] = array_values( $dependencies );
197  }
198  }
199 
207  $resourceLoader = $context->getResourceLoader();
208  // Future developers: Use WebRequest::getRawVal() instead getVal().
209  // The getVal() method performs slow Language+UTF logic. (f303bb9360)
210  $target = $context->getRequest()->getRawVal( 'target', 'desktop' );
211  // Bypass target filter if this request is Special:JavaScriptTest.
212  // To prevent misuse in production, this is only allowed if testing is enabled server-side.
213  $byPassTargetFilter = $this->getConfig()->get( 'EnableJavaScriptTest' ) && $target === 'test';
214 
215  $out = '';
216  $states = [];
217  $registryData = [];
218 
219  // Get registry data
220  foreach ( $resourceLoader->getModuleNames() as $name ) {
221  $module = $resourceLoader->getModule( $name );
222  $moduleTargets = $module->getTargets();
223  if ( !$byPassTargetFilter && !in_array( $target, $moduleTargets ) ) {
224  continue;
225  }
226 
227  if ( $module->isRaw() ) {
228  // Don't register "raw" modules (like 'jquery' and 'mediawiki') client-side because
229  // depending on them is illegal anyway and would only lead to them being reloaded
230  // causing any state to be lost (like jQuery plugins, mw.config etc.)
231  continue;
232  }
233 
234  try {
235  $versionHash = $module->getVersionHash( $context );
236  } catch ( Exception $e ) {
237  // See also T152266 and ResourceLoader::getCombinedVersion()
239  $context->getLogger()->warning(
240  'Calculating version for "{module}" failed: {exception}',
241  [
242  'module' => $name,
243  'exception' => $e,
244  ]
245  );
246  $versionHash = '';
247  $states[$name] = 'error';
248  }
249 
250  if ( $versionHash !== '' && strlen( $versionHash ) !== 7 ) {
251  $context->getLogger()->warning(
252  "Module '{module}' produced an invalid version hash: '{version}'.",
253  [
254  'module' => $name,
255  'version' => $versionHash,
256  ]
257  );
258  // Module implementation either broken or deviated from ResourceLoader::makeHash
259  // Asserted by tests/phpunit/structure/ResourcesTest.
261  }
262 
263  $skipFunction = $module->getSkipFunction();
264  if ( $skipFunction !== null && !ResourceLoader::inDebugMode() ) {
265  $skipFunction = ResourceLoader::filter( 'minify-js', $skipFunction );
266  }
267 
268  $registryData[$name] = [
269  'version' => $versionHash,
270  'dependencies' => $module->getDependencies( $context ),
271  'group' => $module->getGroup(),
272  'source' => $module->getSource(),
273  'skip' => $skipFunction,
274  ];
275  }
276 
277  self::compileUnresolvedDependencies( $registryData );
278 
279  // Register sources
281 
282  // Figure out the different call signatures for mw.loader.register
283  $registrations = [];
284  foreach ( $registryData as $name => $data ) {
285  // Call mw.loader.register(name, version, dependencies, group, source, skip)
286  $registrations[] = [
287  $name,
288  $data['version'],
289  $data['dependencies'],
290  $data['group'],
291  // Swap default (local) for null
292  $data['source'] === 'local' ? null : $data['source'],
293  $data['skip']
294  ];
295  }
296 
297  // Register modules
298  $out .= "\n" . ResourceLoader::makeLoaderRegisterScript( $registrations );
299 
300  if ( $states ) {
301  $out .= "\n" . ResourceLoader::makeLoaderStateScript( $states );
302  }
303 
304  return $out;
305  }
306 
310  public function isRaw() {
311  return true;
312  }
313 
320  return [
321  $url => [ 'as' => 'script' ]
322  ];
323  }
324 
330  public static function getStartupModules() {
331  return [ 'jquery', 'mediawiki' ];
332  }
333 
334  public static function getLegacyModules() {
336 
337  $legacyModules = [];
339  $legacyModules[] = 'mediawiki.legacy.wikibits';
340  }
341 
342  return $legacyModules;
343  }
344 
355  $rl = $context->getResourceLoader();
356  $derivative = new DerivativeResourceLoaderContext( $context );
357  $derivative->setModules( array_merge(
358  self::getStartupModules(),
359  self::getLegacyModules()
360  ) );
361  $derivative->setOnly( 'scripts' );
362  // Must setModules() before makeVersionQuery()
363  $derivative->setVersion( $rl->makeVersionQuery( $derivative ) );
364 
365  return $rl->createLoaderURL( 'local', $derivative );
366  }
367 
373  global $IP;
374  if ( $context->getOnly() !== 'scripts' ) {
375  return '/* Requires only=script */';
376  }
377 
378  $out = file_get_contents( "$IP/resources/src/startup.js" );
379 
380  $pairs = array_map( function ( $value ) {
382  // Fix indentation
383  $value = str_replace( "\n", "\n\t", $value );
384  return $value;
385  }, [
386  '$VARS.wgLegacyJavaScriptGlobals' => $this->getConfig()->get( 'LegacyJavaScriptGlobals' ),
387  '$VARS.configuration' => $this->getConfigSettings( $context ),
388  // This url may be preloaded. See getPreloadLinks().
389  '$VARS.baseModulesUri' => self::getStartupModulesUrl( $context ),
390  ] );
391  $pairs['$CODE.registrations()'] = str_replace(
392  "\n",
393  "\n\t",
394  trim( $this->getModuleRegistrations( $context ) )
395  );
396 
397  return strtr( $out, $pairs );
398  }
399 
403  public function supportsURLLoading() {
404  return false;
405  }
406 
414  global $IP;
415  $summary = parent::getDefinitionSummary( $context );
416  $summary[] = [
417  // Detect changes to variables exposed in mw.config (T30899).
418  'vars' => $this->getConfigSettings( $context ),
419  // Changes how getScript() creates mw.Map for mw.config
420  'wgLegacyJavaScriptGlobals' => $this->getConfig()->get( 'LegacyJavaScriptGlobals' ),
421  // Detect changes to the module registrations
422  'moduleHashes' => $this->getAllModuleHashes( $context ),
423 
424  'fileMtimes' => [
425  filemtime( "$IP/resources/src/startup.js" ),
426  ],
427  ];
428  return $summary;
429  }
430 
438  $rl = $context->getResourceLoader();
439  // Preload for getCombinedVersion()
440  $rl->preloadModuleInfo( $rl->getModuleNames(), $context );
441 
442  // ATTENTION: Because of the line below, this is not going to cause infinite recursion.
443  // Think carefully before making changes to this code!
444  // Pre-populate versionHash with something because the loop over all modules below includes
445  // the startup module (this module).
446  // See ResourceLoaderModule::getVersionHash() for usage of this cache.
447  $this->versionHash[$context->getHash()] = null;
448 
449  return $rl->getCombinedVersion( $context, $rl->getModuleNames() );
450  }
451 
455  public function getGroup() {
456  return 'startup';
457  }
458 }
ResourceLoader\filter
static filter( $filter, $data, array $options=[])
Run JavaScript or CSS data through a filter, caching the filtered result for future calls.
Definition: ResourceLoader.php:189
ResourceLoaderStartUpModule\$targets
$targets
Definition: ResourceLoaderStartUpModule.php:40
ResourceLoaderContext
Object passed around to modules which contains information about the state of a specific loader reque...
Definition: ResourceLoaderContext.php:32
object
globals will be eliminated from MediaWiki replaced by an application object which would be passed to constructors Whether that would be an convenient solution remains to be but certainly PHP makes such object oriented programming models easier than they were in previous versions For the time being MediaWiki programmers will have to work in an environment with some global context At the time of globals were initialised on startup by MediaWiki of these were configuration which are documented in DefaultSettings php There is no comprehensive documentation for the remaining however some of the most important ones are listed below They are typically initialised either in index php or in Setup php For a description of the see design txt $wgTitle Title object created from the request URL $wgOut OutputPage object for HTTP response $wgUser User object for the user associated with the current request $wgLang Language object selected by user preferences $wgContLang Language object associated with the wiki being viewed $wgParser Parser object Parser extensions register their hooks here $wgRequest WebRequest object
Definition: globals.txt:64
Title\newFromText
static newFromText( $text, $defaultNamespace=NS_MAIN)
Create a new Title from text, such as what one would find in a link.
Definition: Title.php:273
$wgIncludeLegacyJavaScript
$wgIncludeLegacyJavaScript
Whether to ensure the mediawiki.legacy library is loaded before other modules.
Definition: DefaultSettings.php:3701
ResourceLoaderStartUpModule\getDefinitionSummary
getDefinitionSummary(ResourceLoaderContext $context)
Get the definition summary for this module.
Definition: ResourceLoaderStartUpModule.php:413
ResourceLoaderStartUpModule\getModuleRegistrations
getModuleRegistrations(ResourceLoaderContext $context)
Get registration code for all modules.
Definition: ResourceLoaderStartUpModule.php:206
ResourceLoaderStartUpModule\getAllModuleHashes
getAllModuleHashes(ResourceLoaderContext $context)
Helper method for getDefinitionSummary().
Definition: ResourceLoaderStartUpModule.php:437
array
the array() calling protocol came about after MediaWiki 1.4rc1.
ResourceLoaderModule\$versionHash
$versionHash
Definition: ResourceLoaderModule.php:77
ResourceLoaderStartUpModule\getStartupModules
static getStartupModules()
Base modules required for the base environment of ResourceLoader.
Definition: ResourceLoaderStartUpModule.php:330
ResourceLoaderStartUpModule\$configVars
$configVars
Definition: ResourceLoaderStartUpModule.php:39
ResourceLoaderStartUpModule\getStartupModulesUrl
static getStartupModulesUrl(ResourceLoaderContext $context)
Get the load URL of the startup modules.
Definition: ResourceLoaderStartUpModule.php:354
$out
this hook is for auditing only or null if authentication failed before getting that far or null if we can t even determine that probably a stub it is not rendered in wiki pages or galleries in category pages allow injecting custom HTML after the section Any uses of the hook need to handle escaping see BaseTemplate::getToolbox and BaseTemplate::makeListItem for details on the format of individual items inside of this array or by returning and letting standard HTTP rendering take place modifiable or by returning false and taking over the output $out
Definition: hooks.txt:864
$resourceLoader
do that in ParserLimitReportFormat instead use this to modify the parameters of the image all existing parser cache entries will be invalid To avoid you ll need to handle that somehow(e.g. with the RejectParserCacheValue hook) because MediaWiki won 't do it for you. & $defaults also a ContextSource after deleting those rows but within the same transaction you ll probably need to make sure the header is varied on and they can depend only on the ResourceLoaderContext such as when responding to a resource loader request or generating HTML output & $resourceLoader
Definition: hooks.txt:2818
MWNamespace\getContentNamespaces
static getContentNamespaces()
Get a list of all namespace indices which are considered to contain content.
Definition: MWNamespace.php:377
Title\convertByteClassToUnicodeClass
static convertByteClassToUnicodeClass( $byteClass)
Utility method for converting a character sequence from bytes to Unicode.
Definition: Title.php:637
FormatJson\ALL_OK
const ALL_OK
Skip escaping as many characters as reasonably possible.
Definition: FormatJson.php:55
php
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:37
ResourceLoader\makeLoaderRegisterScript
static makeLoaderRegisterScript( $name, $version=null, $dependencies=null, $group=null, $source=null, $skip=null)
Returns JS code which calls mw.loader.register with the given parameters.
Definition: ResourceLoader.php:1416
ResourceLoaderStartUpModule\getImplicitDependencies
static getImplicitDependencies(array $registryData, $moduleName)
Recursively get all explicit and implicit dependencies for to the given module.
Definition: ResourceLoaderStartUpModule.php:144
Skin\getSkinNames
static getSkinNames()
Fetch the set of available skins.
Definition: Skin.php:55
ResourceLoaderStartUpModule\getLegacyModules
static getLegacyModules()
Definition: ResourceLoaderStartUpModule.php:334
ResourceLoader\makeLoaderSourcesScript
static makeLoaderSourcesScript( $id, $loadUrl=null)
Returns JS code which calls mw.loader.addSource() with the given parameters.
Definition: ResourceLoader.php:1470
FormatJson\encode
static encode( $value, $pretty=false, $escaping=0)
Returns the JSON representation of a value.
Definition: FormatJson.php:127
ResourceLoaderStartUpModule\supportsURLLoading
supportsURLLoading()
Definition: ResourceLoaderStartUpModule.php:403
wfScript
wfScript( $script='index')
Get the path to a specified script file, respecting file extensions; this is a wrapper around $wgScri...
Definition: GlobalFunctions.php:2890
ResourceLoader\makeLoaderStateScript
static makeLoaderStateScript( $name, $state=null)
Returns a JS call to mw.loader.state, which sets the state of a module or modules to a given value.
Definition: ResourceLoader.php:1314
ResourceLoader\makeHash
static makeHash( $value)
Definition: ResourceLoader.php:627
ResourceLoaderStartUpModule\isRaw
isRaw()
Definition: ResourceLoaderStartUpModule.php:310
global
when a variable name is used in a it is silently declared as a new masking the global
Definition: design.txt:95
ResourceLoaderStartUpModule\getScript
getScript(ResourceLoaderContext $context)
Definition: ResourceLoaderStartUpModule.php:372
MIGRATION_OLD
const MIGRATION_OLD
Definition: Defines.php:302
wfUrlProtocols
wfUrlProtocols( $includeProtocolRelative=true)
Returns a regular expression of url protocols.
Definition: GlobalFunctions.php:727
$value
$value
Definition: styleTest.css.php:45
ResourceLoaderStartUpModule\getGroup
getGroup()
Definition: ResourceLoaderStartUpModule.php:455
ResourceLoaderStartUpModule
Module for ResourceLoader initialization.
Definition: ResourceLoaderStartUpModule.php:36
DerivativeResourceLoaderContext
Allows changing specific properties of a context object, without changing the main one.
Definition: DerivativeResourceLoaderContext.php:30
ResourceLoaderModule\$name
$name
Definition: ResourceLoaderModule.php:69
CommentStore\COMMENT_CHARACTER_LIMIT
const COMMENT_CHARACTER_LIMIT
Maximum length of a comment in UTF-8 characters.
Definition: CommentStore.php:37
ResourceLoaderModule
Abstraction for ResourceLoader modules, with name registration and maxage functionality.
Definition: ResourceLoaderModule.php:35
ResourceLoaderStartUpModule\getPreloadLinks
getPreloadLinks(ResourceLoaderContext $context)
Definition: ResourceLoaderStartUpModule.php:318
ResourceLoader\inDebugMode
static inDebugMode()
Determine whether debug mode was requested Order of priority is 1) request param, 2) cookie,...
Definition: ResourceLoader.php:1565
as
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
Definition: distributors.txt:22
MWNamespace\getCanonicalNamespaces
static getCanonicalNamespaces( $rebuild=false)
Returns array of all defined namespaces with their canonical (English) names.
Definition: MWNamespace.php:230
MWNamespace\isCapitalized
static isCapitalized( $index)
Is the namespace first-letter capitalized?
Definition: MWNamespace.php:421
ResourceLoaderStartUpModule\getConfigSettings
getConfigSettings( $context)
Definition: ResourceLoaderStartUpModule.php:46
Title\legalChars
static legalChars()
Get a regex character class describing the legal characters in a link.
Definition: Title.php:623
$vars
static configuration should be added through ResourceLoaderGetConfigVars instead & $vars
Definition: hooks.txt:2228
$IP
$IP
Definition: WebStart.php:52
Hooks\run
static run( $event, array $args=[], $deprecatedVersion=null)
Call hook functions defined in Hooks::register and $wgHooks.
Definition: Hooks.php:203
ResourceLoaderStartUpModule\compileUnresolvedDependencies
static compileUnresolvedDependencies(array &$registryData)
Optimize the dependency tree in $this->modules.
Definition: ResourceLoaderStartUpModule.php:188
$context
do that in ParserLimitReportFormat instead use this to modify the parameters of the image all existing parser cache entries will be invalid To avoid you ll need to handle that somehow(e.g. with the RejectParserCacheValue hook) because MediaWiki won 't do it for you. & $defaults also a ContextSource after deleting those rows but within the same transaction you ll probably need to make sure the header is varied on and they can depend only on the ResourceLoaderContext $context
Definition: hooks.txt:2811
ResourceLoaderModule\getConfig
getConfig()
Definition: ResourceLoaderModule.php:185
$e
div flags Integer display flags(NO_ACTION_LINK, NO_EXTRA_USER_LINKS) 'LogException' returning false will NOT prevent logging $e
Definition: hooks.txt:2171
MWExceptionHandler\logException
static logException( $e, $catcher=self::CAUGHT_BY_OTHER)
Log an exception to the exception log (if enabled).
Definition: MWExceptionHandler.php:645
$wgContLang
this class mediates it Skin Encapsulates a look and feel for the wiki All of the functions that render HTML and make choices about how to render it are here and are called from various other places when and is meant to be subclassed with other skins that may override some of its functions The User object contains a reference to a and so rather than having a global skin object we just rely on the global User and get the skin with $wgUser and also has some character encoding functions and other locale stuff The current user interface language is instantiated as and the content language as $wgContLang
Definition: design.txt:57