* Warning, this function does not (and is not intended to) detect
* all iso 2022 escape codes. In practise, the code for utf-8 is the
* only code that seems to have wide use. It does detect that code.
* Warning, this function does not (and is not intended to) detect
* all iso 2022 escape codes. In practise, the code for utf-8 is the
* only code that seems to have wide use. It does detect that code.