From 80022c81ce4a07a232afd3c580b0977555a2daec Mon Sep 17 00:00:00 2001
From: Dave Methvin <dave.methvin@gmail.com>
Date: Wed, 3 Dec 2014 14:51:24 -0500
Subject: Core: Throw an error on $("#") rather than returning 0-length
 collection

Closes gh-1682

Thanks @goob for the issue report!
---
 src/core/init.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/core/init.js b/src/core/init.js
index 9beaedd04..9357e05a3 100644
--- a/src/core/init.js
+++ b/src/core/init.js
@@ -11,7 +11,8 @@ 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 <)
-	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/,
+	// Shortcut simple #id case for speed
+	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
 
 	init = jQuery.fn.init = function( selector, context ) {
 		var match, elem;
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