or truncate the string at an error but this turns what would otherwise be harmless errors (i.e. "file not found") into a denial of service, for instance early versions of Python 3.0 would exit immediately if the command line or environment variables contained invalid UTF-8. Most code now replaces each error with a single code point (such as ) and continue decoding.

Some decoders consider the sequence (a truncated 3-byte code followed by a space)