file-string-length
(file-string-length stream object)
How far writing the object -- a character or a string -- would move file-position on the stream: its UTF-8 byte length, since UTF-8 is the one external format every backend writes.
(file-string-length stream object)
How far writing the object -- a character or a string -- would move file-position on the stream: its UTF-8 byte length, since UTF-8 is the one external format every backend writes.