Improve CSS and Support: comments. Close gh-1220.

1) corrected box-sizing rules order - the unprefixed value should always be the last one
2) removed last semi-colons in CSS rules
3) updated support comments

code review changes + more consistent comment spacing

src/core.js

@@ -409,7 +409,7 @@ jQuery.extend({
 		if ( obj == null ) {
 			return String( obj );
 		}
-		// Support: Safari <=5.1 (functionish RegExp)
+		// Support: Safari <= 5.1 (functionish RegExp)
 		return typeof obj === "object" || typeof obj === "function" ?
 			class2type[ core_toString.call(obj) ] || "object" :
 			typeof obj;
@@ -424,9 +424,10 @@ jQuery.extend({
 			return false;
 		}
 
-		// Support: Firefox >16
+		// Support: Firefox <20
 		// The try/catch suppresses exceptions thrown when attempting to access
 		// the "constructor" property of certain host objects, ie. |window.location|
+		// https://bugzilla.mozilla.org/show_bug.cgi?id=814622
 		try {
 			if ( obj.constructor &&
 					!core_hasOwn.call( obj.constructor.prototype, "isPrototypeOf" ) ) {

src/css.js

@@ -295,9 +295,8 @@ curCSS = function( elem, name, _computed ) {
 			ret = jQuery.style( elem, name );
 		}
 
-		// Support: Chrome <17, Safari 5.1
+		// Support: Safari 5.1
 		// A tribute to the "awesome hack by Dean Edwards"
-		// Chrome < 17 and Safari 5.0 uses "computed value" instead of "used value" for margin-right
 		// Safari 5.1.7 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels
 		// this is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values
 		if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) {
@@ -484,10 +483,12 @@ jQuery.each([ "height", "width" ], function( i, name ) {
 // These hooks cannot be added until DOM ready because the support test
 // for it is not run until after DOM ready
 jQuery(function() {
+	// Support: Android 2.3
 	if ( !jQuery.support.reliableMarginRight ) {
 		jQuery.cssHooks.marginRight = {
 			get: function( elem, computed ) {
 				if ( computed ) {
+					// Support: Android 2.3
 					// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
 					// Work around by temporarily setting element display to inline-block
 					return jQuery.swap( elem, { "display": "inline-block" },

src/event.js

@@ -508,7 +508,7 @@ jQuery.event = {
 			event[ prop ] = originalEvent[ prop ];
 		}
 
-		// Support: Chrome 23+, Safari?
+		// Support: Safari 6.0+, Chrome < 28
 		// Target should not be a text node (#504, #13143)
 		if ( event.target.nodeType === 3 ) {
 			event.target = event.target.parentNode;
@@ -554,7 +554,8 @@ jQuery.event = {
 		beforeunload: {
 			postDispatch: function( event ) {
 
-				// Support: Firefox 10+
+				// Support: Firefox 20+
+				// Firefox doesn't alert if the returnValue field is not set.
 				if ( event.result !== undefined ) {
 					event.originalEvent.returnValue = event.result;
 				}
@@ -685,7 +686,7 @@ jQuery.each({
 });
 
 // Create "bubbling" focus and blur events
-// Support: Firefox 10+
+// Support: Firefox, Chrome, Safari
 if ( !jQuery.support.focusinBubbles ) {
 	jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {
 

src/manipulation.js

@@ -318,7 +318,7 @@ jQuery.extend({
 			clone = elem.cloneNode( true ),
 			inPage = jQuery.contains( elem.ownerDocument, elem );
 
-		// Support: IE >=9
+		// Support: IE >= 9
 		// Fix Cloning issues
 		if ( !jQuery.support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && !jQuery.isXMLDoc( elem ) ) {
 

src/support.js

@@ -12,6 +12,7 @@ jQuery.support = (function( support ) {
 
 	input.type = "checkbox";
 
+	// Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3
 	// Check the default checkbox/radio value ("" on old WebKit; "on" elsewhere)
 	support.checkOn = input.value !== "";
 
@@ -38,7 +39,7 @@ jQuery.support = (function( support ) {
 	support.optDisabled = !opt.disabled;
 
 	// Check if an input maintains its value after becoming a radio
-	// Support: IE9, IE10, Opera
+	// Support: IE9, IE10
 	input = document.createElement("input");
 	input.value = "t";
 	input.type = "radio";
@@ -50,10 +51,11 @@ jQuery.support = (function( support ) {
 
 	fragment.appendChild( input );
 
+	// Support: Safari 5.1, Android 4.x, Android 2.3
 	// old WebKit doesn't clone checked state correctly in fragments
 	support.checkClone = fragment.cloneNode( true ).cloneNode( true ).lastChild.checked;
 
-	// Support: Firefox 17+
+	// Support: Firefox, Chrome, Safari
 	// Beware of CSP restrictions (https://developer.mozilla.org/en/Security/CSP)
 	support.focusinBubbles = "onfocusin" in window;
 
@@ -64,7 +66,8 @@ jQuery.support = (function( support ) {
 	// Run tests that need a body at doc ready
 	jQuery(function() {
 		var container, marginDiv,
-			divReset = "padding:0;margin:0;border:0;display:block;box-sizing:content-box;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;",
+			// Support: Firefox, Android 2.3 (Prefixed box-sizing versions).
+			divReset = "padding:0;margin:0;border:0;display:block;-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box",
 			body = document.getElementsByTagName("body")[ 0 ];
 
 		if ( !body ) {
@@ -78,7 +81,8 @@ jQuery.support = (function( support ) {
 		// Check box-sizing and margin behavior.
 		body.appendChild( container ).appendChild( div );
 		div.innerHTML = "";
-		div.style.cssText = "box-sizing:border-box;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;position:absolute;top:1%;";
+		// Support: Firefox, Android 2.3 (Prefixed box-sizing versions).
+		div.style.cssText = "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;position:absolute;top:1%";
 
 		// Workaround failing boxSizing test due to offsetWidth returning wrong value
 		// with some non-1 values of body zoom, ticket #13543
@@ -91,9 +95,9 @@ jQuery.support = (function( support ) {
 			support.pixelPosition = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
 			support.boxSizingReliable = ( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";
 
+			// Support: Android 2.3
 			// Check if div with explicit width and no margin-right incorrectly
 			// gets computed margin-right based on width of container. (#3333)
-			// Fails in WebKit before Feb 2011 nightlies
 			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
 			marginDiv = div.appendChild( document.createElement("div") );
 			marginDiv.style.cssText = div.style.cssText = divReset;

test/unit/ajax.js

@@ -1045,7 +1045,6 @@ module( "ajax", {
 			ok( jqXHR.statusText === "Hello" || jqXHR.statusText === "OK", "jqXHR status text ok for success (" + jqXHR.statusText + ")" );
 			jQuery.ajax( url("data/statusText.php?status=404&text=World") ).fail(function( jqXHR, statusText ) {
 				strictEqual( statusText, "error", "callback status text ok for error" );
-				// ok( jqXHR.statusText === "World" || jQuery.browser.safari && jqXHR.statusText === "Not Found", "jqXHR status text ok for error (" + jqXHR.statusText + ")" );
 				start();
 			});
 		});

test/unit/css.js

@@ -775,7 +775,8 @@ test("Do not append px (#9548, #12990)", function() {
 test("css('width') and css('height') should respect box-sizing, see #11004", function() {
 	expect( 4 );
 
-	var el_dis = jQuery("<div style='width:300px;height:300px;margin:2px;padding:2px;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box;'>test</div>"),
+	// Support: Firefox, Android 2.3 (Prefixed box-sizing versions).
+	var el_dis = jQuery("<div style='width:300px;height:300px;margin:2px;padding:2px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;'>test</div>"),
 		el = el_dis.clone().appendTo("#qunit-fixture");
 
 	equal( el.css("width"), el.css("width", el.css("width")).css("width"), "css('width') is not respecting box-sizing, see #11004");

test/unit/dimensions.js

@@ -407,7 +407,8 @@ test( "getters on non elements should return null", function() {
 test("setters with and without box-sizing:border-box", function(){
 	expect(20);
 
-	var el_bb = jQuery("<div style='width:114px;height:114px;margin:5px;padding:3px;border:4px solid white;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box;'>test</div>").appendTo("#qunit-fixture"),
+	// Support: Firefox, Android 2.3 (Prefixed box-sizing versions).
+	var el_bb = jQuery("<div style='width:114px;height:114px;margin:5px;padding:3px;border:4px solid white;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;'>test</div>").appendTo("#qunit-fixture"),
 		el = jQuery("<div style='width:100px;height:100px;margin:5px;padding:3px;border:4px solid white;'>test</div>").appendTo("#qunit-fixture"),
 		expected = 100;
 

test/unit/offset.js

@@ -18,8 +18,7 @@ var supportsScroll, supportsFixedPosition,
 		supportsScroll = document.documentElement.scrollTop || document.body.scrollTop;
 		forceScroll.detach();
 
-		// Safari subtracts parent border width here (which is 5px)
-		supportsFixedPosition = checkFixed[0].offsetTop === 20 || checkFixed[0].offsetTop === 15;
+		supportsFixedPosition = checkFixed[0].offsetTop === 20;
 		checkFixed.remove();
 	};