rem: if (match == null || match[0] == "") { 
add: if (match == null || match[0] != ctrl_value) { 
context: webForm.RegularExpressionValidatorEvaluateIsValid = function (validator){	var ValidationExpression = validator.validationexpression;	var ControlToValidate = validator.controltovalidate;	var ctrl_value = webForm.ValidatorTrim (webForm.ValidatorGetValue (ControlToValidate));	if (ctrl_value == "") {		webForm.ValidatorSucceeded (validator);		return true;	}  if (!webForm.HaveRegexp ())    return false;  	var r = new RegExp (ValidationExpression);	match = r.exec (ctrl_value);	if (match == null || match[0] == "") {		webForm.ValidatorFailed (validator);		return false;	}	else {		webForm.ValidatorSucceeded (validator);		return true;	}}
meta: 172	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/172/570efe42daf78f35569421b516a7fd7f28857278/WebUIValidation_2.0.js/buggy/mcs/class/System.Web/resources/WebUIValidation_2.0.js