Can LDAP attribute values be null?

[Jeff Lankford <JLankford@jsf.northrop.com>]

In ./libraries/libldif/libe64.c, in str_parse_line(), the following
code appears:

        /* if no value is present, error out */
        if ( *s == '\0' ) {
                Debug( LDAP_DEBUG_PARSE, "parse_line missing value\n", 0,0,0 );
                return( -1 );
        }

This prevents str2entry() from including attribute names that have
no associated value.

I didn't find any mention of null attribute values in  the LDAP standard,
either for or against.

Is the behaviour of openLDAP correct? better than other alternatives?
-- 
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