utfbytes - compute UTF length of complete Unicode characters in a UTF byte sequence .EX include "sys.m"; sys := load Sys Sys->PATH; utfbytes: fn(buf: array of byte, n: int): int; Utfbytes examines the n -byte UTF sequence in buf and returns the number of bytes representing complete Unicode characters. The value will be less than n when the region inspected ends with an incomplete UTF sequence. A bounds check error results if n exceeds the length of the array. sys-intro (2), sys-byte2char (2), utf (6)