Issue #3274474 by mondrake, longwave, andypost, Spokje, catch, alexpott: Fix 'Access to an undefined property' PHPStan L0 errors

Issue #2940121 by apaderno, andypost, idebr, Kingdutch, kala4ek, mfb, alexpott, Berdir: ConfigurableLanguageManager::getLanguageSwitchLinks() doesn't respect what LanguageManagerInterface::getLanguageSwitchLinks() says to return

Issue #3222251 by bbrala, longwave: [November 8, 2021] Replace all isset constructs with the null coalescing operator

Issue #3161223 by andypost, longwave, Hardik_Patel_12, alexpott, jungle, dww: Use PHP 7.0 "spaceship" operator for user sort functions where possible

Issue #3181644 by alexpott, andypost, longwave, chr.fritsch: PCRE library version 10.35 with pcre.jit=1 makes \Drupal\Core\StringTranslation\Translator\FileTranslation::getTranslationFilesPattern() regex misbehave

Issue #2972224 by alexpott, longwave, jungle, sja112, xjm, dww, daffie, kiamlaluno, dawehner, quietone, Lendude: Add .cspell.json to automate spellchecking in Drupal core

Issue #3100251 by Hardik_Patel_12, longwave: Several code comments have incorrect namespaces for classes or interfaces they reference

Issue #2940038 by Sweetchuck, drunken monkey, rajeshwari10, borisson_: Use $this in @return PhpDoc comments instead of the name of the current class or interface

Issue #2903908 by mfernea, martin107: Fix 'Drupal.Commenting.FunctionComment.ParamCommentIndentation' coding standard

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2585821 by blazey, marvin_B8, sdstyles, benelori, GoZ, DuaelFr: ConfigurableLanguageManager language_switch_links alter use undefined path variable

Issue #1926000 by alansaviolobo, longwave, Emin Sulaiman, jungle: Language name Uyghur in Cyrillic alphabet

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2668008 by dimaro, kannan@kiluvai.com, rakesh.gectcr, felribeiro, jhodgdon, eojthebrave, xjm, mobaid: Internationalization topic refers to format_plural() function that does not exist

Issue #2678978 by thpoul, Wim Leers: Change United Nations official languages URL in LanguageManager

Issue #1993928 by BarisW, Wim Leers, thpoul, effulgentsia, mgifford, Gábor Hojtsy, Hanno, Pancho, Bojhan: Language of parts: Introduce a language toolbar button

Revert "Issue #1993928 by BarisW, Wim Leers, thpoul, mgifford, Gábor Hojtsy, Hanno, Pancho, Bojhan: Language of parts: Introduce a language toolbar button"

This reverts commit 11344070.

Issue #1993928 by BarisW, Wim Leers, thpoul, mgifford, Gábor Hojtsy, Hanno, Pancho, Bojhan: Language of parts: Introduce a language toolbar button

Issue #2668008 by dimaro, rakesh.gectcr, kannan@kiluvai.com, felribeiro, jhodgdon, eojthebrave, mobaid, xjm, AjitS: Internationalization topic refers to format_plural() function that does not exist

Issue #2625782 by alexpott: Infinite loop in ConfigurableLanguageManager->getLanguages() on language config entities import

Issue #2410497 by alvar0hurtad0, sdstyles, hussainweb, webchick, jhodgdon, mpdonadio: Update remaining url() and _l() calls in comments/documentation

Issue #2576533 by alexpott, stefan.r, Wim Leers, dawehner, xjm, effulgentsia, catch: Rename SafeStringInterface to MarkupInterface and move related classes

Issue #2508884 by EclipseGc, tim.plunkett, dsnopek, japerry, sravya_12, swathin, Wim Leers, Fabianx, dawehner, yched: Make contexts immutable

Issue #2571375 by alexpott, webflo, stefan.r, Xano, mr.baileys: Remove TranslationManager dependency from LanguageManager

Issue #2569069 by stefan.r, mr.baileys, alexpott, lauriii: Replace TranslationWrapper with TranslatableString and deprecate TranslationWrapper

Issue #2542304 by sorressean, dawehner: Define 'direction' in \Drupal\Core\Language\LanguageManager::getDefaultLockedLanguages

Issue #2497275 by borisson_, alexpott, dawehner, Gábor Hojtsy: ~50 calls to t() for two strings in LanguageManager() on every request

Revert "Issue #2497275 by borisson_, alexpott: ~50 calls to t() for two strings in LanguageManager() on every request"

This reverts commit fe4cd2cf.

Issue #2497275 by borisson_, alexpott: ~50 calls to t() for two strings in LanguageManager() on every request