I'd suggest filing this under forbidden knowledge, 0x9b is 0b10011011, making it a UTF-8 continuation byte. Putting a terminal into C1 mode is a great way to h

I'd suggest filing this under forbidden knowledge, 0x9b is 0b10011011, making it a UTF-8 continuation byte. Putting a terminal into C1 mode is a great way to have it do unpredictable and weird things unless printable input is constrained to the lower seven.