故障解析：.NET开发正则表达式中BUG一例

　　1234567891011121314151617Regex regex = new Regex(@"[/u00FF-/uFFFF]+"); 　　// The characters, whoes value are smaller than 0xff, are not expected to be matched. 　　for (int i = 0; i < 0xff; i++) { 　　string s = new string(new char[] { (char)i }); 　　Debug.Assert( 　　!regex.IsMatch(s), 　　string.Format("The character was not expected to be matched: 0x{0:X}!", i)); 　　} 　　// However, the characters whoes value are greater than 0xfe are expected to be matched. 　　for (int i = 0xff; i <= 0xffff; i++) { 　　string s = new string(new char[] { (char)i }); 　　Debug.Assert( 　　regex.IsMatch(s), 　　string.Format("The character was expected to be matched: 0x{0:X}!", i)); 　　}

1234567891011121314151617var re = /[/u00FF-/uFFFF]+/; 　　// var re = /[/u00FF-/uFFFF]+/i; 　　for(var i=0; i<0xff; i++) { 　　var s = String.fromCharCode( i ); 　　if ( re.test(s) ){ 　　alert( 'Should not be matched: ' + i + '!' ); 　　} 　　} 　　for(var i=0xff; i<=0xffff; i++) { 　　var s = String.fromCharCode( i ); 　　if ( !re.test(s) ){ 　　alert( 'Should be matched: ' + i + '!' ); 　　} 　　}