Manual Section... (3) - page: FcUtf8Len
NAMEFcUtf8Len - 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 version 2.6.0
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Time: 15:27:21 GMT, June 11, 2010