Issue #3483299 by tstoeckler, mstrelan, nicxvan: Add void return type to all preprocess hook implementations

Issue #2874067 by kkalashnikov, Nikolay Shapovalov, quietone, smustgrave, benjifisher, MerryHamster, xjm, dww: Fix Drupal.Commenting.DocCommentLongArraySyntax coding standard

Issue #3431452 by godotislate, smustgrave, alexpott: Rename RenderElement and FormElement plugin abstract classes to RenderElementBase and FormElementBase

Issue #3109970 by znerol, andypost, Prashant.c, daffie, Wim Leers, dww, catch: Convert uses of $_SESSION in forms and batch

Issue #431612 by pillarsdotnet, RoboPhred, Albert Volkman, sourabhjain, catch, PapaGrande, webchick, Bojhan, Freso, flickerfly, cilefen: Stop using post as a noun

Issue #2921133 by quietone, VladimirAus, xjm, ankithashetty, longwave, Prem Suthar, smustgrave, benjifisher, AaronMcHale: Remove "Please" from the codebase

Issue #3337513 by mondrake, gidarai, VladimirAus, daffie, catch, andypost, smustgrave, rkoller, alexpott: Fix batch process race conditions by making ‘bid (batch id)’ auto-increment

Revert "Issue #3337513 by mondrake, gidarai, daffie, alexpott, catch: Fix batch process race conditions by making ‘bid (batch id)’ auto-increment"

This reverts commit 779785e2.

Issue #3346645 by jweowu, catch, smustgrave: Eliminate anti-pattern isset($arr[$key]) || array_key_exists($key, $arr)

Issue #3337513 by mondrake, gidarai, daffie, alexpott, catch: Fix batch process race conditions by making ‘bid (batch id)’ auto-increment

Issue #2941148 by quietone, bruno.bicudo, ravi.shankar, Sweetchuck, beatrizrodrigues, lucienchalom, VitaliyB98, WagnerMelo, sophiavs, ankitjain28may, daffie, longwave, Sutharsan, borisson_, cosmicdreams, heykarthikwithu, catch: Fix Drupal.Commenting.FunctionComment.MissingReturnType

Issue #3268746 by quietone, xjm: Fix missing newlines for 'Drupal.Commenting.DocComment.ShortSingleLine'

Issue #3219649 by quietone, murilohp, longwave: Fix spelling for words used once, beginning with 'q' -> 's', inclusive

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

Issue #2347783 by kim.pepper, andypost, almaudoh, gumanist, aleevas, rodrigoaguilera, Berdir, saurabh-2k17, Spokje, dhirendra.mishra, alexpott, paulocs, izus, Wim Leers, KapilV, naveenvalecha, anmolgoyal74, subson, yo30, harsha012, mrinalini9, daffie, voleger, dww, fietserwin, tim.plunkett, joachim, larowlan: Deprecate drupal_get_path() and drupal_get_filename() and replace with ExtensionList::getPath() and ExtensionList::getPathname()

Issue #2396145 by dww, Dom., mgifford, Pancho, idebr, vdanielpop, specky_rum, vprocessor, DuaelFr, lucastockmann, cwoky, Munavijayalakshmi, dutchyoda, Gauravmahlawat, paulocs, TheodorosPloumis, Arla, lauriii, Kristen Pol, quietone, larowlan, jhedstrom, mherchel: Option #description_display for form element fieldset is not changing anything

Issue #3189880 by mondrake, raman.b, Pooja Ganjage, daffie, Megha_kundar, dww, S_Bhandari: Use square brackets syntax in sql queries

Issue #3138746 by jungle, rajandro, sja112, longwave, jameszhang023, quietone, dww: Fix 45 "shouldBeCamelCased" and related typos in core

Issue #2939645 by quietone, hgoto, dhirendra.mishra, jungle, kostyashupenko, govind.maloo, John Cook, alexpott: The sample batch finished callback function should have the fourth parameter

Issue #2664016 by hchonov, gease, DuaelFr, morsok, tstoeckler, Daniele Nicastro, alexpott, plach, larowlan, dawehner, cspitzlay: Adding a new batch set while the batch is running breaks batch order

Issue #3072906 by bnjmnm, zrpnr, Wim Leers, lauriii, catch, mpdonadio, xjm, rainbreaw, andrewmacpherson, mgifford, anevins, jhedstrom: Deprecate and remove jQuery UI datepicker

Issue #3065903 by jhodgdon, benjifisher, larowlan, alexpott: Add label sort ability to Select element

Issue #2849745 by voleger, yogeshmpawar, gaurav.kapoor, Berdir, Munavijayalakshmi, vacho, cilefen, daffie: Replace documentation recommending db_*() wrappers

Issue #2875394 by voleger, erozqba, Berdir, mondrake: Replace all calls to db_query, which is deprecated

Issue #3041985 by alexpott, pifagor: Add Generic.CodeAnalysis.EmptyPHPStatement to phpcs rules to prevent empty PHP statements

Issue #2978922 by brathbone, philipnorton42, msankhala, hardikpandya, alexpott, siliconmeadow: Improve batch_process() documentation

Issue #2497909 by Andrew.Mikhailov, pfrenssen, claudiu.cristea, cilefen, yogeshmpawar, jibran, kim.pepper, alexpott, Jeremy JOCHEMSKI, Cottser: Duplicate HTML IDs are created for file_managed_file fields

Issue #2848815 by mondrake, voleger, gaurav.kapoor, jeetendrakumar, Sharique, vidhatanand, techtud, cilefen, andypost:  Replace all calls to db_next_id, which is deprecated

Issue #2652850 by tstoeckler, mohit_aghera, idebr, hchonov, mbovan, rodrigoaguilera, jwilson3, pguillard, espurnes, dravenk, ainarend, handkerchief, alexpott: Title for details form elements is not set as '#markup' and it will be escaped, but all other form elements use '#markup' and are not escaped

Issue #2930407 by tstoeckler, lauriii, alexpott: Allow specifying summary attributes for details elements

Issue #2935254 by kim.pepper: Remove all usages of drupal_get_message and drupal_set_message in core includes

Issue #2902726 by mfernea, martin107: Fix 'Drupal.Commenting.FunctionComment.ParamCommentNotCapital' coding standard

Issue #2594553 by gambry, arshadcn, Sagar Ramgade, Yogesh Pawar, garnett2125, larowlan, lauriii: Add #maxlength to textarea in Form API

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