I want to feed some Big5-UAO encoded data. Since there is no encoding parameter (or something like that), I tried using ByteStream:

stream = ByteStream(screen)
stream.select_other_charset("@")
stream.feed(bytes_object)

However, after checking the source code, it seems that this setup equals to:

stream = Stream(screen)
stream.feed(bytes_object.decode("latin-1"))

This method doesn't work because the bytes of Big5-UAO encoded string may contain control characters like \x9d, and match_text failed to match the entire string:

How about encoding the bytes into unicode string with Big5-UAO before passing it to stream.feed?

We can't. In our usecase, we need a special feature called "雙色字". It colors a double width charater with two different colors. For example:

• Encode "我" into bytes b'\xa7\xda'
• Insert ANSI escape code to pos 0 and pos 1: b'\x1b[1;31m\xa7\x1b[32m\xda'
• This is what it looks like:

As a result, we can't decode the bytes before the escape code is parsed.

May we can add a flag to disable C1 controls in Stream.feed parser?