ldap_get_values() called on binary data - does this return an error, or garbage data?

Hi all,

Looking back in time to the definitions of ldap_get_values() and =
ldap_get_values_len(), we are told that "If the attribute values are =
binary in nature, and thus not suitable to be returned as an array of =
char *'s, the ldap_get_values_len() routine can be used instead."

This has been historically vague - first off, what happens if an attempt =
is made to call ldap_get_values() on binary data, do you get an error, =
or garbage data? The source isn't giving me a clear answer.

Second question is how do you know which of ldap_get_values() or =
ldap_get_values_len() to call? Obviously you can manually know this, but =
I'm interested in automated behaviour. What is the canonical way to =
discover that if you queried a jpegPhoto (for example) that the result =
would be binary?

To be clear, the end goal it to patch the following documentation to =
make this clear:

=
https://www.openldap.org/software/man.cgi?query=3Dldap_get_values&apropos=3D=
0&sektion=3D3&manpath=3DOpenLDAP+2.4-Release&arch=3Ddefault&format=3Dhtml

Regards,
Graham
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