FcUtf8Len - count UTF-8 encoded chars

Counts the number of Unicode chars in len bytes of src. Places that count in nchar. wchar contains 1, 2 or 4 depending on the number of bytes needed to hold the largest Unicode char counted. The return value indicates whether src is a well-formed UTF8 string. Fontconfig 2.15.0 04 July 2025 FcUtf8Len(3)

FcUtf8Len - count UTF-8 encoded chars