Character here feels like it's an implementation of a fixed-length version of UTF-16 (i.e. it encodes all code points that fit into 16 bits, and skips the rest), so properly, this should probably be something like '\u{U+FFFD}' for the replacement character (e.g. https://en.wikipedia.org/wiki/Specials_(Unicode_block) ).
Characterhere feels like it's an implementation of a fixed-length version of UTF-16 (i.e. it encodes all code points that fit into 16 bits, and skips the rest), so properly, this should probably be something like '\u{U+FFFD}' for the replacement character (e.g. https://en.wikipedia.org/wiki/Specials_(Unicode_block) )._Originally posted by @sethp in https://github.com/rustbox/esp32c3-vgaterm/pull/9#discussion_r1096123485_