Regular expression to restrict Extended ASCII character set

Question

I have multi lingual application which creates xml files but Extended ASCII characters from 168 to 254 (¿⌐¬½¼¡«»░▓│┤╡╢╖╕╣║╗╜╛┐└┴┬├) are not supposed in XML tags so, I would like

Answer 1

Rather you can make use of range in character class, to exclude specific range of characters using their Hex Codes: -

[^\xA8-\xFE]

The above regex will match any character except those in the given range. Those are the hex codes for the range you posted - [168, 254]