rem: else if ( options[ name ] != undefined ) 
add: else if ( options[ name ] !== undefined ) 
context: jQuery.extend = jQuery.fn.extend = function() {	// copy reference to target object	var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;	// Handle a deep copy situation	if ( target.constructor == Boolean ) {		deep = target;		target = arguments[1] || {};		// skip the boolean and the target		i = 2;	}	// Handle case when target is a string or something (possible in deep copy)	if ( typeof target != "object" )		target = {};	// extend jQuery itself if only one argument is passed	if ( length == 1 ) {		target = this;		i = 0;	}	for ( ; i < length; i++ )		// Only deal with non-null/undefined values		if ( (options = arguments[ i ]) != null )			// Extend the base object			for ( var name in options ) {				// Prevent never-ending loop				if ( target === options[ name ] )					continue;				// Recurse if we're merging object values				if ( deep && typeof options[ name ] == "object" && target[ name ] && !options[ name ].nodeType )					target[ name ] = jQuery.extend( target[ name ], options[ name ] );				// Don't bring in undefined values				else if ( options[ name ] != undefined )					target[ name ] = options[ name ];			}	// Return the modified object	return target;};
meta: 1307	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1307/95c0265486fc551a08ec20d6060a3a382aa8a76b/core.js/buggy/src/core.js