Escape ascii character in user name (ex: "name": "\u0015кαу.❀") that breaks XML and others


Hi all,

I have an issue with escape ASCII characters that breaks XML and other treatments I could make on tweets, that are rejected when I try to analyze them.

For example, the following request is answering “name”: “\u0015кαу.❀” and the “\u0015” (which is the negative axknowledge character breaks the treatments I could try on the user and on his tweets.

If you take a look at twitter web interface, you will see that this character is not printed (

Is it possible to disallow this type of characters (control characters), at least from names/bio/description? and if possible from tweets?

Thank you,