This change adds a truncate_bytes mode which counts the number of bytes, as
opposed to the number of UTF-8 characters. This can be useful for ensuring that a
crypt-encoded filename will not exceed the underlying backend's length limits
(see https://forum.rclone.org/t/any-clear-file-name-length-when-using-crypt/36930 ).
This change also adds support for _keep_extension when using truncate and
truncate_bytes.
nielashandNick Craig-Wood
fe62a2bb4e