Keep track of any Lucy objects that have been assigned to global Perl variables. This is useful when accounting how many objects should have been destroyed and diagnosing memory leaks.

Turn an SV's UTF8 flag on. Equivalent to Encode::_utf8_on, but we don't have to load Encode.

Turn an SV's UTF8 flag off.

Upgrade a SV to UTF8, converting Latin1 if necessary. Equivalent to utf::upgrade().

Concatenate one scalar onto the end of the other, ignoring UTF-8 status of the second scalar. This is necessary because $not_utf8 . $utf8 results in a scalar which has been infected by the UTF-8 flag of the second argument.