More changes to get jQuery in line with JSLint.

src/core.js

@@ -18,7 +18,7 @@ var jQuery = function( selector, context ) {
 
 	// A simple way to check for HTML strings or ID strings
 	// (both of which we optimize for)
-	quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/,
+	quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w\-]+)$/,
 
 	// Is it a simple selector
 	isSimple = /^.[^:#\[\.,]*$/,
@@ -623,12 +623,14 @@ jQuery.extend({
 	},
 
 	grep: function( elems, callback, inv ) {
-		var ret = [];
+		var ret = [], retVal;
+		inv = !!inv;
 
 		// Go through the array, only saving the items
 		// that pass the validator function
 		for ( var i = 0, length = elems.length; i < length; i++ ) {
-			if ( !inv !== !callback( elems[ i ], i ) ) {
+			retVal = !!callback( elems[ i ], i );
+			if ( inv !== retVal ) {
 				ret.push( elems[ i ] );
 			}
 		}
@@ -748,7 +750,7 @@ function doScrollCheck() {
 		// If IE is used, use the trick by Diego Perini
 		// http://javascript.nwbox.com/IEContentLoaded/
 		document.documentElement.doScroll("left");
-	} catch( error ) {
+	} catch(e) {
 		setTimeout( doScrollCheck, 1 );
 		return;
 	}