SYS-UTFBYTES(2)                                   SYS-UTFBYTES(2)

     NAME
          utfbytes - compute UTF length of complete Unicode characters
          in a UTF byte sequence

     SYNOPSIS
          include "sys.m";
          sys := load Sys Sys->PATH;

          utfbytes: fn(buf: array of byte, n: int): int;

     DESCRIPTION
          Utfbytes examines the n-byte UTF sequence in buf and returns
          the number of bytes representing complete Unicode charac-
          ters.  The value will be less than n when the region
          inspected ends with an incomplete UTF sequence.

     DIAGNOSTIC
          A bounds check error results if n exceeds the length of the
          array.

     SEE ALSO
          sys-intro(2), sys-byte2char(2), utf(6)

     Page 1                       Plan 9            (printed 10/30/25)