TextField converts LF to CR

/**
 * Copyright 9re ( http://wonderfl.net/user/9re )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/vMPA
 */

package {
    import flash.text.TextFormat;
    import flash.text.TextField;
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        private static const CR:String = '\r';
        private static const LF:String = '\n';
        public function FlashTest() {
            var dumper:TextField = addChild(new TextField) as TextField;
            dumper.defaultTextFormat = new TextFormat('_typewriter');
            dumper.width = 415; dumper.height = 465; dumper.x = 50;
            
            var tfYPos:int = 0;
            var numbers:Array = "123".split("");
            ([
                numbers.join(CR), // CR
                numbers.join(LF), // LF
                numbers.join(CR+LF) // CR+LF
            ]).forEach(function (str:String, i:int, arr:Array):void {
                var tf:TextField = new TextField;
                tf.y = tfYPos;
                hexDump(str);
                dumper.appendText('-> ');
                tf.text = str;
                hexDump(tf.text);
                
                tf.height = tf.textHeight + 4;
                tfYPos += tf.height;
                addChild(tf);
            });
            
            function hexDump(str:String):void {
                str.split('').forEach(function(char:String, ...rest):void {
                    dumper.appendText(toHex(char.charCodeAt(0)) + " ");
                });
                dumper.appendText('\n');
            }
            function toHex(intVal:int):String {
                var hex:String = intVal.toString(16);
                return (hex.length == 1) ? "0" + hex : hex;
            }
        }
    }
}