			parseAttribute = function (s, attr) {
				var start,
					delimiter;

				start = s.indexOf('<');
				s = s.substring(start, s.indexOf('>') - start);

				start = s.indexOf(attr + '=');
				if (start !== -1) {
					start = start + attr.length + 1;
					delimiter = s.charAt(start);
					if (delimiter === '"' || delimiter === "'") { // eslint-disable-line quotes
						s = s.substring(start + 1);
						return s.substring(0, s.indexOf(delimiter));
					}
				}
			};
The software specifies a regular expression in a way that causes data to be improperly matched or compared.