[Xapian-discuss] std::string arguments presumed to be UTF8?

[Liam]

I see that TermGenerator::index_text() can take a Utf8Iterator argument,
but Document::add_term() etc simply take a std::string.

Are std::string arguments presumed to be UTF8 strings? If "sometimes,"
where or where not?

Apologies if I've missed the docs on this...