Fix #11989. Remove fragment cache, moving to jquery-compat. Close gh-1052.

src/core.js

@@ -497,8 +497,7 @@ jQuery.extend({
 		if ( scripts ) {
 			jQuery( scripts ).remove();
 		}
-		return jQuery.merge( [],
-			( parsed.cacheable ? jQuery.clone( parsed.fragment ) : parsed.fragment ).childNodes );
+		return jQuery.merge( [], parsed.childNodes );
 	},
 
 	parseJSON: function( data ) {

src/manipulation.js

@@ -22,7 +22,6 @@ var nodeNames = "abbr|article|aside|audio|bdi|canvas|data|datalist|details|figca
 	rtbody = /<tbody/i,
 	rhtml = /<|&#?\w+;/,
 	rnoInnerhtml = /<(?:script|style|link)/i,
-	rnocache = /<(?:script|style|object|embed|applet|option)/i,
 	manipulation_rcheckableType = /^(?:checkbox|radio)$/i,
 	// checked="checked" or checked
 	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
@@ -315,7 +314,7 @@ jQuery.fn.extend({
 
 		if ( this[0] ) {
 			results = jQuery.buildFragment( args, this );
-			fragment = results.fragment;
+			fragment = results;
 			first = fragment.firstChild;
 
 			if ( fragment.childNodes.length === 1 ) {
@@ -329,9 +328,9 @@ jQuery.fn.extend({
 
 				// Use the original fragment for the last item instead of the first because it can end up
 				// being emptied incorrectly in certain situations (#8070).
-				// Fragments from the fragment cache must always be cloned and never used in place.
-				for ( iNoClone = results.cacheable || l - 1; i < l; i++ ) {
+				for ( iNoClone = l - 1; i < l; i++ ) {
 					node = fragment;
+
 					if ( i !== iNoClone ) {
 						node = jQuery.clone( node, true, true );
 
@@ -340,6 +339,7 @@ jQuery.fn.extend({
 							jQuery.merge( scripts, getAll( node, "script" ) );
 						}
 					}
+
 					callback.call(
 						table && jQuery.nodeName( this[i], "table" ) ?
 							findOrAppend( this[i], "tbody" ) :
@@ -515,8 +515,7 @@ function cloneFixAttributes( src, dest ) {
 }
 
 jQuery.buildFragment = function( args, context, scripts ) {
-	var fragment, cacheable, cachehit,
-		first = args[ 0 ];
+	var fragment;
 
 	// Set context from what may come in as undefined or a jQuery collection or a node
 	// Updated to fix #12266 where accessing context[0] could throw an exception in IE9/10 &
@@ -525,38 +524,12 @@ jQuery.buildFragment = function( args, context, scripts ) {
 	context = !context.nodeType && context[0] || context;
 	context = context.ownerDocument || context;
 
-	// Only cache "small" (1/2 KB) HTML strings that are associated with the main document
-	// Cloning options loses the selected state, so don't cache them
-	// IE 6 doesn't like it when you put <object> or <embed> elements in a fragment
-	// Also, WebKit does not clone 'checked' attributes on cloneNode, so don't cache
-	// Lastly, IE6,7,8 will not correctly reuse cached fragments that were created from unknown elems #10501
-	if ( args.length === 1 && typeof first === "string" && first.length < 512 && context === document &&
-		first.charAt(0) === "<" && !rnocache.test( first ) &&
-		(jQuery.support.checkClone || !rchecked.test( first )) &&
-		(jQuery.support.html5Clone || !rnoshimcache.test( first )) ) {
-
-		// Mark cacheable and look for a hit
-		cacheable = true;
-		fragment = jQuery.fragments[ first ];
-		cachehit = fragment !== undefined;
-	}
-
-	if ( !fragment ) {
-		fragment = context.createDocumentFragment();
-		jQuery.clean( args, context, fragment, scripts );
+	fragment = context.createDocumentFragment();
+	jQuery.clean( args, context, fragment, scripts );
 
-		// Update the cache, but only store false
-		// unless this is a second parsing of the same content
-		if ( cacheable ) {
-			jQuery.fragments[ first ] = cachehit && fragment;
-		}
-	}
-
-	return { fragment: fragment, cacheable: cacheable };
+	return fragment;
 };
 
-jQuery.fragments = {};
-
 jQuery.each({
 	appendTo: "append",
 	prependTo: "prepend",

test/unit/manipulation.js

@@ -689,21 +689,6 @@ if ( jQuery.css ) {
 	});
 }
 
-test( "html5 clone() cannot use the fragment cache in IE (#6485)", function() {
-	
-	expect( 1 );
-
-	var clone;
-
-	jQuery("<article><section><aside>HTML5 elements</aside></section></article>").appendTo("#qunit-fixture");
-
-	clone = jQuery("article").clone();
-
-	jQuery("#qunit-fixture").append( clone );
-
-	equal( jQuery("aside").length, 2, "clone()ing HTML5 elems does not collapse them" );
-});
-
 test( "html(String) with HTML5 (Bug #6485)", function() {
 	
 	expect( 2 );
@@ -2112,55 +2097,6 @@ test( "Cloned, detached HTML5 elems (#10667,10670)", function() {
 	$clone.unbind("click");
 });
 
-test( "jQuery.fragments cache expectations", function() {
-
-	expect( 10 );
-
-	jQuery.fragments = {};
-
-	function fragmentCacheSize() {
-		var c,
-			n = 0;
-
-		for ( c in jQuery.fragments ) {
-			n++;
-		}
-		return n;
-	}
-
-	jQuery("<li></li>");
-	jQuery("<li>?</li>");
-	jQuery("<li>whip</li>");
-	jQuery("<li>it</li>");
-	jQuery("<li>good</li>");
-	jQuery("<div></div>");
-	jQuery("<div><div><span></span></div></div>");
-	jQuery("<tr><td></td></tr>");
-	jQuery("<tr><td></tr>");
-	jQuery("<li>aaa</li>");
-	jQuery("<ul><li>?</li></ul>");
-	jQuery("<div><p>arf</p>nnn</div>");
-	jQuery("<div><p>dog</p>?</div>");
-	jQuery("<span><span>");
-
-	equal( fragmentCacheSize(), 12, "12 entries exist in jQuery.fragments, 1" );
-
-	jQuery.each( [
-		"<tr><td></td></tr>",
-		"<ul><li>?</li></ul>",
-		"<div><p>dog</p>?</div>",
-		"<span><span>"
-	], function( i, frag ) {
-
-		jQuery( frag );
-
-		equal( jQuery.fragments[ frag ].nodeType, 11, "Second call with " + frag + " creates a cached DocumentFragment, has nodeType 11" );
-		ok( jQuery.fragments[ frag ].childNodes.length, "Second call with " + frag + " creates a cached DocumentFragment, has childNodes with length" );
-	});
-
-	equal( fragmentCacheSize(), 12, "12 entries exist in jQuery.fragments, 2" );
-});
-
 test( "Guard against exceptions when clearing safeChildNodes", function() {
 	
 	expect( 1 );