html_entity_decode(). There is an encoding argument that can be used. You can try ISO-8859-1, ISO-8859-5, ISO-8859-15, cp1251 and cp1252 for this parameter. Probably best to try this approach first.
cron/task/digests.phpthat can be triggered if a table of contents is wanted in a digest. This is because the messenger class does not support the
assign_var()method of the request class. You can see the patch here.