U++FFFD

It is correct, by the Unicode standard, to replace such data by U+FFFD REPLACEMENT CHARACTER when...

I am currently working on a c++ project where it sometimes happens that typing a space is interpr...

U+FFFC • U+10000 𐀀. · · ·. Info · Code · Related · Glyphs · Chart · Encodings · Data · Tags · Com...

Unicode Character 'REPLACEMENT CHARACTER' (U+FFFD) ; Comments, used to replace an incoming charac...

Invalid UTF-8 gets turned, one byte at a time, into U+FFFD. Here is text from the spec about rang...