6 files changed, 60 insertions, 42 deletions
diff --git a/src/core.js b/src/core.js
index 31d749dd1..4f5731ae1 100644
--- a/src/core.js
+++ b/src/core.js
@@ -10,9 +10,8 @@ import hasOwn from "./var/hasOwn.js";
 import fnToString from "./var/fnToString.js";
 import ObjectFunctionString from "./var/ObjectFunctionString.js";
 import support from "./var/support.js";
-import isWindow from "./var/isWindow.js";
+import isArrayLike from "./core/isArrayLike.js";
 import DOMEval from "./core/DOMEval.js";
-import toType from "./core/toType.js";
 
 var version = "@VERSION",
 
@@ -398,17 +397,4 @@ jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symb
 		class2type[ "[object " + name + "]" ] = name.toLowerCase();
 	} );
 
-function isArrayLike( obj ) {
-
-	var length = !!obj && obj.length,
-		type = toType( obj );
-
-	if ( typeof obj === "function" || isWindow( obj ) ) {
-		return false;
-	}
-
-	return type === "array" || length === 0 ||
-		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
-}
-
 export default jQuery;
diff --git a/src/core/init.js b/src/core/init.js
index a97fc1060..8fc24d8dd 100644
--- a/src/core/init.js
+++ b/src/core/init.js
@@ -2,6 +2,7 @@
 import jQuery from "../core.js";
 import document from "../var/document.js";
 import rsingleTag from "./var/rsingleTag.js";
+import isObviousHtml from "./isObviousHtml.js";
 
 import "../traversing/findFilter.js";
 
@@ -26,20 +27,41 @@ var rootjQuery,
 		// so migrate can support jQuery.sub (gh-2101)
 		root = root || rootjQuery;
 
-		// Handle HTML strings
-		if ( typeof selector === "string" ) {
-			if ( selector[ 0 ] === "<" &&
-				selector[ selector.length - 1 ] === ">" &&
-				selector.length >= 3 ) {
+		// HANDLE: $(DOMElement)
+		if ( selector.nodeType ) {
+			this[ 0 ] = selector;
+			this.length = 1;
+			return this;
+
+		// HANDLE: $(function)
+		// Shortcut for document ready
+		} else if ( typeof selector === "function" ) {
+			return root.ready !== undefined ?
+				root.ready( selector ) :
+
+				// Execute immediately if ready is not present
+				selector( jQuery );
+
+		} else {
 
-				// Assume that strings that start and end with <> are HTML and skip the regex check
+			// Handle obvious HTML strings
+			match = selector + "";
+			if ( isObviousHtml( match ) ) {
+
+				// Assume that strings that start and end with <> are HTML and skip
+				// the regex check. This also handles browser-supported HTML wrappers
+				// like TrustedHTML.
 				match = [ null, selector, null ];
 
-			} else {
+			// Handle HTML strings or selectors
+			} else if ( typeof selector === "string" ) {
 				match = rquickExpr.exec( selector );
+			} else {
+				return jQuery.makeArray( selector, this );
 			}
 
 			// Match html or make sure no context is specified for #id
+			// Note: match[1] may be a string or a TrustedHTML wrapper
 			if ( match && ( match[ 1 ] || !context ) ) {
 
 				// HANDLE: $(html) -> $(array)
@@ -84,7 +106,7 @@ var rootjQuery,
 					return this;
 				}
 
-			// HANDLE: $(expr, $(...))
+			// HANDLE: $(expr) & $(expr, $(...))
 			} else if ( !context || context.jquery ) {
 				return ( context || root ).find( selector );
 
@@ -93,24 +115,8 @@ var rootjQuery,
 			} else {
 				return this.constructor( context ).find( selector );
 			}
-
-		// HANDLE: $(DOMElement)
-		} else if ( selector.nodeType ) {
-			this[ 0 ] = selector;
-			this.length = 1;
-			return this;
-
-		// HANDLE: $(function)
-		// Shortcut for document ready
-		} else if ( typeof selector === "function" ) {
-			return root.ready !== undefined ?
-				root.ready( selector ) :
-
-				// Execute immediately if ready is not present
-				selector( jQuery );
 		}
 
-		return jQuery.makeArray( selector, this );
 	};
 
 // Give the init function the jQuery prototype for later instantiation
diff --git a/src/core/isArrayLike.js b/src/core/isArrayLike.js
new file mode 100644
index 000000000..988c483d3
--- /dev/null
+++ b/src/core/isArrayLike.js
@@ -0,0 +1,17 @@
+import toType from "./toType.js";
+import isWindow from "../var/isWindow.js";
+
+function isArrayLike( obj ) {
+
+	var length = !!obj && obj.length,
+		type = toType( obj );
+
+	if ( typeof obj === "function" || isWindow( obj ) ) {
+		return false;
+	}
+
+	return type === "array" || length === 0 ||
+		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
+}
+
+export default isArrayLike;
diff --git a/src/core/isObviousHtml.js b/src/core/isObviousHtml.js
new file mode 100644
index 000000000..976f81219
--- /dev/null
+++ b/src/core/isObviousHtml.js
@@ -0,0 +1,7 @@
+function isObviousHtml( input ) {
+	return input[ 0 ] === "<" &&
+		input[ input.length - 1 ] === ">" &&
+		input.length >= 3;
+}
+
+export default isObviousHtml;
diff --git a/src/core/parseHTML.js b/src/core/parseHTML.js
index 15278fa02..b522a5f7b 100644
--- a/src/core/parseHTML.js
+++ b/src/core/parseHTML.js
@@ -2,13 +2,14 @@ import jQuery from "../core.js";
 import document from "../var/document.js";
 import rsingleTag from "./var/rsingleTag.js";
 import buildFragment from "../manipulation/buildFragment.js";
+import isObviousHtml from "./isObviousHtml.js";
 
-// Argument "data" should be string of html
+// Argument "data" should be string of html or a TrustedHTML wrapper of obvious HTML
 // context (optional): If specified, the fragment will be created in this context,
 // defaults to document
 // keepScripts (optional): If true, will include scripts passed in the html string
 jQuery.parseHTML = function( data, context, keepScripts ) {
-	if ( typeof data !== "string" ) {
+	if ( typeof data !== "string" && !isObviousHtml( data + "" ) ) {
 		return [];
 	}
 	if ( typeof context === "boolean" ) {
diff --git a/src/manipulation/buildFragment.js b/src/manipulation/buildFragment.js
index 9ac71acc9..d6f8e5783 100644
--- a/src/manipulation/buildFragment.js
+++ b/src/manipulation/buildFragment.js
@@ -7,6 +7,7 @@ import rscriptType from "./var/rscriptType.js";
 import wrapMap from "./wrapMap.js";
 import getAll from "./getAll.js";
 import setGlobalEval from "./setGlobalEval.js";
+import isArrayLike from "../core/isArrayLike.js";
 
 var rhtml = /<|&#?\w+;/;
 
@@ -23,7 +24,7 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 		if ( elem || elem === 0 ) {
 
 			// Add nodes directly
-			if ( toType( elem ) === "object" ) {
+			if ( toType( elem ) === "object" && ( elem.nodeType || isArrayLike( elem ) ) ) {
 				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
 
 			// Convert non-html into a text node