Library: UTF-8 (OMUTF8)
Import : omutf8.xmd
export integer function length of value string utf8-string
utf8.length is used to determine how many UTF-8 code points are encoded in its
utf8-string argument. Multi-byte characters count as a single character.
utf8.length, you must import OMUTF8 into your program using
an import declaration such as:
import "omutf8.xmd" prefixed by utf8.