jquery · mgol · Jan 4, 2022 · Jan 3, 2022
diff --git a/README.md b/README.md
@@ -14,6 +14,12 @@ In the spirit of open source software development, jQuery always encourages comm
 2. [Core Style Guide](https://contribute.jquery.org/style-guide/js/)
 3. [Writing Code for jQuery Foundation Projects](https://contribute.jquery.org/code/)
 
+### References to issues/PRs
+
+GitHub issues/PRs are usually referenced via `gh-NUMBER`, where `NUMBER` is the numerical ID of the issue/PR. You can find such an issue/PR under `https://github.com/jquery/jquery/issues/NUMBER`.
+
+jQuery has used a different bug tracker - based on Trac - in the past, available under [bugs.jquery.com](https://bugs.jquery.com/). It is being kept in read only mode so that referring to past discussions is possible. When jQuery source references one of those issues, it uses the pattern `trac-NUMBER`, where `NUMBER` is the numerical ID of the issue. You can find such an issue under `https://bugs.jquery.com/ticket/NUMBER`.
+
 
 Environments in which to use jQuery
 --------------------------------------

diff --git a/src/ajax.js b/src/ajax.js
@@ -17,7 +17,7 @@ var
 	rantiCache = /([?&])_=[^&]*/,
 	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,
 
-	// #7653, #8125, #8152: local protocol detection
+	// trac-7653, trac-8125, trac-8152: local protocol detection
 	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
 	rnoContent = /^(?:GET|HEAD)$/,
 	rprotocol = /^\/\//,
@@ -40,7 +40,7 @@ var
 	 */
 	transports = {},
 
-	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
+	// Avoid comment-prolog char sequence (trac-10098); must appease lint and evade compression
 	allTypes = "*/".concat( "*" ),
 
 	// Anchor tag for parsing the document origin
@@ -111,7 +111,7 @@ function inspectPrefiltersOrTransports( structure, options, originalOptions, jqX
 
 // A special extend for ajax options
 // that takes "flat" options (not to be deep extended)
-// Fixes #9887
+// Fixes trac-9887
 function ajaxExtend( target, src ) {
 	var key, deep,
 		flatOptions = jQuery.ajaxSettings.flatOptions || {};
@@ -528,12 +528,12 @@ jQuery.extend( {
 		deferred.promise( jqXHR );
 
 		// Add protocol if not provided (prefilters might expect it)
-		// Handle falsy url in the settings object (#10093: consistency with old signature)
+		// Handle falsy url in the settings object (trac-10093: consistency with old signature)
 		// We also use the url parameter if available
 		s.url = ( ( url || s.url || location.href ) + "" )
 			.replace( rprotocol, location.protocol + "//" );
 
-		// Alias method option to type as per ticket #12004
+		// Alias method option to type as per ticket trac-12004
 		s.type = options.method || options.type || s.method || s.type;
 
 		// Extract dataTypes list
@@ -605,7 +605,7 @@ jQuery.extend( {
 			if ( s.data && ( s.processData || typeof s.data === "string" ) ) {
 				cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data;
 
-				// #9682: remove data so that it's not used in an eventual retry
+				// trac-9682: remove data so that it's not used in an eventual retry
 				delete s.data;
 			}
 

diff --git a/src/ajax/xhr.js b/src/ajax/xhr.js
@@ -66,7 +66,7 @@ jQuery.ajaxTransport( function( options ) {
 						} else if ( type === "error" ) {
 							complete(
 
-								// File: protocol always yields status 0; see #8605, #14207
+								// File: protocol always yields status 0; see trac-8605, trac-14207
 								xhr.status,
 								xhr.statusText
 							);
@@ -99,7 +99,7 @@ jQuery.ajaxTransport( function( options ) {
 				xhr.send( options.hasContent && options.data || null );
 			} catch ( e ) {
 
-				// #14683: Only rethrow if this hasn't been notified as an error yet
+				// trac-14683: Only rethrow if this hasn't been notified as an error yet
 				if ( callback ) {
 					throw e;
 				}

diff --git a/src/attributes/prop.js b/src/attributes/prop.js
@@ -60,7 +60,7 @@ jQuery.extend( {
 				// elem.tabIndex doesn't always return the
 				// correct value when it hasn't been explicitly set
 				// https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
-				// Use proper attribute retrieval(#12072)
+				// Use proper attribute retrieval (trac-12072)
 				var tabindex = elem.getAttribute( "tabindex" );
 
 				if ( tabindex ) {

diff --git a/src/attributes/val.js b/src/attributes/val.js
@@ -149,7 +149,7 @@ if ( isIE ) {
 				val :
 
 				// Support: IE <=10 - 11+
-				// option.text throws exceptions (#14686, #14858)
+				// option.text throws exceptions (trac-14686, trac-14858)
 				// Strip and collapse whitespace
 				// https://html.spec.whatwg.org/#strip-and-collapse-whitespace
 				stripAndCollapse( jQuery.text( elem ) );

diff --git a/src/core/init.js b/src/core/init.js
@@ -10,8 +10,8 @@ import "../traversing/findFilter.js";
 var rootjQuery,
 
 	// A simple way to check for HTML strings
-	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
-	// Strict HTML recognition (#11290: must start with <)
+	// Prioritize #id over <tag> to avoid XSS via location.hash (trac-9521)
+	// Strict HTML recognition (trac-11290: must start with <)
 	// Shortcut simple #id case for speed
 	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
 

diff --git a/src/core/ready-no-deferred.js b/src/core/ready-no-deferred.js
@@ -25,7 +25,7 @@ jQuery.extend( {
 	isReady: false,
 
 	// A counter to track how many items to wait for before
-	// the ready event fires. See #6781
+	// the ready event fires. See trac-6781
 	readyWait: 1,
 
 	ready: function( wait ) {

diff --git a/src/core/ready.js b/src/core/ready.js
@@ -28,7 +28,7 @@ jQuery.extend( {
 	isReady: false,
 
 	// A counter to track how many items to wait for before
-	// the ready event fires. See #6781
+	// the ready event fires. See trac-6781
 	readyWait: 1,
 
 	// Handle when the DOM is ready

diff --git a/src/css.js b/src/css.js
@@ -220,15 +220,15 @@ jQuery.extend( {
 		if ( value !== undefined ) {
 			type = typeof value;
 
-			// Convert "+=" or "-=" to relative numbers (#7345)
+			// Convert "+=" or "-=" to relative numbers (trac-7345)
 			if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {
 				value = adjustCSS( elem, name, ret );
 
-				// Fixes bug #9237
+				// Fixes bug trac-9237
 				type = "number";
 			}
 
-			// Make sure that null and NaN values aren't set (#7116)
+			// Make sure that null and NaN values aren't set (trac-7116)
 			if ( value == null || value !== value ) {
 				return;
 			}
@@ -239,7 +239,7 @@ jQuery.extend( {
 			}
 
 			// Support: IE <=9 - 11+
-			// background-* props of a cloned element affect the source element (#8908)
+			// background-* props of a cloned element affect the source element (trac-8908)
 			if ( isIE && value === "" && name.indexOf( "background" ) === 0 ) {
 				style[ name ] = "inherit";
 			}

diff --git a/src/css/cssCamelCase.js b/src/css/cssCamelCase.js
@@ -6,7 +6,7 @@ var rmsPrefix = /^-ms-/;
 // Convert dashed to camelCase, handle vendor prefixes.
 // Used by the css & effects modules.
 // Support: IE <=9 - 11+
-// Microsoft forgot to hump their vendor prefix (#9572)
+// Microsoft forgot to hump their vendor prefix (trac-9572)
 function cssCamelCase( string ) {
 	return camelCase( string.replace( rmsPrefix, "ms-" ) );
 }

diff --git a/src/data.js b/src/data.js
@@ -105,7 +105,7 @@ jQuery.fn.extend( {
 					while ( i-- ) {
 
 						// Support: IE 11+
-						// The attrs elements can be null (#14894)
+						// The attrs elements can be null (trac-14894)
 						if ( attrs[ i ] ) {
 							name = attrs[ i ].name;
 							if ( name.indexOf( "data-" ) === 0 ) {

diff --git a/src/data/Data.js b/src/data/Data.js
@@ -21,7 +21,7 @@ Data.prototype = {
 			value = Object.create( null );
 
 			// We can accept data for non-element nodes in modern browsers,
-			// but we should not, see #8335.
+			// but we should not, see trac-8335.
 			// Always return an empty object.
 			if ( acceptData( owner ) ) {
 

diff --git a/src/event.js b/src/event.js
@@ -369,15 +369,15 @@ jQuery.event = {
 
 			for ( ; cur !== this; cur = cur.parentNode || this ) {
 
-				// Don't check non-elements (#13208)
-				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
+				// Don't check non-elements (trac-13208)
+				// Don't process clicks on disabled elements (trac-6911, trac-8165, trac-11382, trac-11764)
 				if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) {
 					matchedHandlers = [];
 					matchedSelectors = {};
 					for ( i = 0; i < delegateCount; i++ ) {
 						handleObj = handlers[ i ];
 
-						// Don't conflict with Object.prototype properties (#13203)
+						// Don't conflict with Object.prototype properties (trac-13203)
 						sel = handleObj.selector + " ";
 
 						if ( matchedSelectors[ sel ] === undefined ) {

diff --git a/src/event/trigger.js b/src/event/trigger.js
@@ -71,8 +71,8 @@ jQuery.extend( jQuery.event, {
 			return;
 		}
 
-		// Determine event propagation path in advance, per W3C events spec (#9951)
-		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
+		// Determine event propagation path in advance, per W3C events spec (trac-9951)
+		// Bubble up to document, then to window; watch for a global ownerDocument var (trac-9724)
 		if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) {
 
 			bubbleType = special.delegateType || type;
@@ -124,7 +124,7 @@ jQuery.extend( jQuery.event, {
 				acceptData( elem ) ) {
 
 				// Call a native DOM method on the target with the same name as the event.
-				// Don't do default actions on window, that's where global variables be (#6170)
+				// Don't do default actions on window, that's where global variables be (trac-6170)
 				if ( ontype && typeof elem[ type ] === "function" && !isWindow( elem ) ) {
 
 					// Don't re-trigger an onFOO event when we call its FOO() method

diff --git a/src/exports/global.js b/src/exports/global.js
@@ -21,8 +21,8 @@ jQuery.noConflict = function( deep ) {
 };
 
 // Expose jQuery and $ identifiers, even in AMD
-// (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
-// and CommonJS for browser emulators (#13566)
+// (trac-7102#comment:10, gh-557)
+// and CommonJS for browser emulators (trac-13566)
 if ( typeof noGlobal === "undefined" ) {
 	window.jQuery = window.$ = jQuery;
 }
diff --git a/src/manipulation.js b/src/manipulation.js
@@ -120,7 +120,7 @@ function domManip( collection, args, callback, ignored ) {
 
 			// Use the original fragment for the last item
 			// instead of the first because it can end up
-			// being emptied incorrectly in certain situations (#8070).
+			// being emptied incorrectly in certain situations (trac-8070).
 			for ( ; i < l; i++ ) {
 				node = fragment;
 

diff --git a/src/manipulation/_evalUrl.js b/src/manipulation/_evalUrl.js
@@ -4,7 +4,7 @@ jQuery._evalUrl = function( url, options, doc ) {
 	return jQuery.ajax( {
 		url: url,
 
-		// Make this explicit, since user can override this through ajaxSetup (#11264)
+		// Make this explicit, since user can override this through ajaxSetup (trac-11264)
 		type: "GET",
 		dataType: "script",
 		cache: true,

diff --git a/src/manipulation/buildFragment.js b/src/manipulation/buildFragment.js
@@ -52,7 +52,7 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 				// Remember the top-level container
 				tmp = fragment.firstChild;
 
-				// Ensure the created nodes are orphaned (#12392)
+				// Ensure the created nodes are orphaned (trac-12392)
 				tmp.textContent = "";
 			}
 		}

diff --git a/src/manipulation/getAll.js b/src/manipulation/getAll.js
@@ -4,7 +4,7 @@ import nodeName from "../core/nodeName.js";
 function getAll( context, tag ) {
 
 	// Support: IE <=9 - 11+
-	// Use typeof to avoid zero-argument method invocation on host objects (#15151)
+	// Use typeof to avoid zero-argument method invocation on host objects (trac-15151)
 	var ret;
 
 	if ( typeof context.getElementsByTagName !== "undefined" ) {

diff --git a/src/selector.js b/src/selector.js
@@ -282,7 +282,8 @@ function createCache() {
 
 	function cache( key, value ) {
 
-		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
+		// Use (key + " ") to avoid collision with native prototype properties
+		// (see https://github.com/jquery/sizzle/issues/157)
 		if ( keys.push( key + " " ) > Expr.cacheLength ) {
 
 			// Only keep the most recent entries
@@ -432,7 +433,7 @@ function setDocument( node ) {
 	documentIsHTML = !jQuery.isXMLDoc( document );
 
 	// Support: IE 9 - 11+
-	// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
+	// Accessing iframe documents after unload throws "permission denied" errors (see trac-13936)
 	// Support: IE 11+
 	// IE sometimes throws a "Permission denied" error when strict-comparing
 	// two documents; shallow comparisons work.
@@ -843,7 +844,8 @@ Expr = jQuery.expr = {
 					input[ 0 ] = elem;
 					matcher( input, null, xml, results );
 
-					// Don't keep the element (issue #299)
+					// Don't keep the element
+					// (see https://github.com/jquery/sizzle/issues/299)
 					input[ 0 ] = null;
 					return !results.pop();
 				};
@@ -1348,7 +1350,8 @@ function matcherFromTokens( tokens ) {
 					matchContext( elem, context, xml ) :
 					matchAnyContext( elem, context, xml ) );
 
-			// Avoid hanging onto element (issue #299)
+			// Avoid hanging onto element
+			// (see https://github.com/jquery/sizzle/issues/299)
 			checkContext = null;
 			return ret;
 		} ];

diff --git a/src/wrapper.js b/src/wrapper.js
@@ -20,7 +20,7 @@
 		// (such as Node.js), expose a factory as module.exports.
 		// This accentuates the need for the creation of a real `window`.
 		// e.g. var jQuery = require("jquery")(window);
-		// See ticket #14549 for more info.
+		// See ticket trac-14549 for more info.
 		module.exports = global.document ?
 			factory( global, true ) :
 			function( w ) {

diff --git a/test/data/ajax/onunload.html b/test/data/ajax/onunload.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 	<meta http-equiv="Content-type" content="text/html; charset=utf-8"/>
-	<title>onunload ajax requests (#14379)</title>
+	<title>onunload ajax requests (trac-14379)</title>
 	<script src="../../jquery.js"></script>
 	<script src="../iframeTest.js"></script>
 </head>

diff --git a/test/data/core/aliased.html b/test/data/core/aliased.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 	<meta http-equiv="Content-type" content="text/html; charset=utf-8"/>
-	<title>alias-masked DOM properties (#14074)</title>
+	<title>alias-masked DOM properties (trac-14074)</title>
 	<script>
 		var errors = [];
 		window.onerror = function( errorMessage, filePath, lineNumber ) {

diff --git a/test/data/core/onready.html b/test/data/core/onready.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 	<meta http-equiv="Content-type" content="text/html; charset=utf-8"/>
-	<title>alias-masked DOM properties (#14074)</title>
+	<title>alias-masked DOM properties (trac-14074)</title>
 	<script>
 		var error = false;
 		window.onready = function() { error = "Called window.onready"; };
@@ -22,4 +22,4 @@
 		});
 	</script>
 </body>
-</html>
+</html>
diff --git a/test/data/data/dataAttrs.html b/test/data/data/dataAttrs.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-	<title>IE11 onpageshow strangeness (#14894)</title>
+	<title>IE11 onpageshow strangeness (trac-14894)</title>
 	<script src="../../jquery.js"></script>
 	<script src="../iframeTest.js"></script>
 	<script>
@@ -12,6 +12,6 @@
 	</script>
 </head>
 <body x-what="test" data-result="ok" onload="x=1" onpageshow="x=1">
-    Test for #14894
+    Test for trac-14894
 </body>
 </html>
diff --git a/test/data/event/focusElem.html b/test/data/event/focusElem.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 	<meta http-equiv="Content-type" content="text/html; charset=utf-8">
-	<title>.focus() (activeElement access #13393)</title>
+	<title>.focus() (activeElement access trac-13393)</title>
 
 	<script src="../../jquery.js"></script>
 	<script src="../iframeTest.js"></script>

diff --git a/test/data/event/focusinCrossFrame.html b/test/data/event/focusinCrossFrame.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 	<meta http-equiv="Content-type" content="text/html; charset=utf-8">
-	<title>focusin event cross-frame (#14180)</title>
+	<title>focusin event cross-frame (trac-14180)</title>
 
 	<script src="../../jquery.js"></script>
 	<script src="../iframeTest.js"></script>

diff --git a/test/data/event/promiseReady.html b/test/data/event/promiseReady.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=utf-8">
-<title>Test case for jQuery ticket #11470</title>
+<title>Test case for jQuery ticket trac-11470</title>
 <script src="../../jquery.js"></script>
 <script src="../iframeTest.js"></script>
 <script type="text/javascript">