Added support for finding elements that have underscores in their name (along with other allowed characters). Fix for ticket #1084.

build/test/index.html

@@ -85,6 +85,8 @@
 			<span id="utf8class2" class="台北"></span>
 			<span id="foo:bar" class="foo:bar"></span>
 			<span id="test.foo[5]bar" class="test.foo[5]bar"></span>
+			
+			<foo_bar id="foobar">test element</foo_bar>
 		</form>
 		<b id="floatTest">Float test.</b>
 		<iframe id="iframe" name="iframe"></iframe>

src/selector/selector.js

@@ -80,7 +80,7 @@ jQuery.extend({
 
 		// Match: :even, :last-chlid, #id, .class
 		new RegExp("^([:.#]*)(" + 
-			( jQuery.chars = "(?:[\\w\u0128-\uFFFF*-]|\\\\.)" ) + "+)")
+			( jQuery.chars = "(?:[\\w\u0128-\uFFFF*_-]|\\\\.)" ) + "+)")
 	],
 
 	token: [
@@ -152,7 +152,7 @@ jQuery.extend({
 
 			// An attempt at speeding up child selectors that
 			// point to a specific element tag
-			var re = /^[\/>]\s*([\w*-]+)/;
+			var re = new RegExp("^[/>]\\s*(" + jQuery.chars + "+)");
 			var m = re.exec(t);
 
 			if ( m ) {
@@ -207,7 +207,7 @@ jQuery.extend({
 
 				} else {
 					// Optomize for the case nodeName#idName
-					var re2 = new RegExp("^(\\w+)(#)(" + jQuery.chars + "+)");
+					var re2 = new RegExp("^(" + jQuery.chars + "+)(#)(" + jQuery.chars + "+)");
 					var m = re2.exec(t);
 					
 					// Re-organize the results, so that they're consistent

src/selector/selectorTest.js

@@ -1,7 +1,7 @@
 module("selector");
 
 test("element", function() {
-	expect(8);
+	expect(9);
 	ok( $("*").size() >= 30, "Select all" );
 	t( "Element Selector", "div", ["main","foo"] );
 	t( "Element Selector", "body", ["body"] );
@@ -11,6 +11,8 @@ test("element", function() {
 	
 	ok( $("#length").length, '<input name="length"> cannot be found under IE, see #945' );
 	ok( $("#lengthtest input").length, '<input name="length"> cannot be found under IE, see #945' );
+
+	t( "Element Selector with underscore", "foo_bar", ["foobar"] );
 });
 
 test("broken", function() {