[exim-dev] UTF-8 and Exim string operations

Anyone have strong feelings on how Exim should handle UTF-8 with
operators such as ${length_1:STR} ?

Document that the current operators work on bytes and add ulength_1 for
being UTF-8 aware? Look at the top-bit being set and assume UTF-8, or
will that break too much with all the places which are still ISO-8859-1?

-Phil