Ext.encode and UTF-8 characters

[mheiming]

Hi there,
as already mentioned in the comments of the function Ext.encode (http://docs.sencha.com/ext-js/4-1/#!...-method-encode) there is an unexpected behavior of this function (at least for me).
When i have some sepcial characters like "german umlauts" "Ä".
Ext.encode does escape the characters as seen in the following example:

Ext.encode("Bäuerle")

results in:

"B\u00e4uerle"

Of course i tried to enable Ext.USE_NATIVE_JSON to use the native JSON encode methode from the browser if possible but this does result in the same outputs.

var string = "Bäuerle";        
console.log(string);
Ext.USE_NATIVE_JSON = true;
string = Ext.encode(string);
Ext.USE_NATIVE_JSON = false;
console.log(string);

gives me this output:

Bäuerle
"B\u00e4uerle"

I am working with Chrome v24 and Firefox v16.

May someone give me a hint how to solve this?
Thanks in advance!

[m.k]

i don't know what you are expecting, but this is the itended behavior

when using UTF-8 you have to keep in mind, that the first 128 character (same as ASCII) are made up of 1 Byte. when you the first bit is set to 1 (values >=128) a second byte is used to represent the character

since Umlaute are not specified in ASCII they typically consist of 2 Bytes and are converted to their hex representation for data interchange

see JSON-specification at json.org

char
any-Unicode-character-
    except-"-or-\-or-
    control-character\"
 \\
 \/
 \b
 \f
 \n
 \r
 \t
 \u four-hex-digits