Add formatting for sequence and arbitrary compound units
ICU supports full unit identifiers in MeasureUnit, but only supports formatting of sanctioned ones. NumberFormatter should be changed to support the formatting of full unit identifiers, including adding code for loading the additional patterns such as the multiplication and list patterns.
(Sent for review - this is done.)
Fixed in ICU4C; port to ICU4J coming very soon.
we now have formatting for mixed units, added as part of ICU-20568.
we support units that are of the form BUILTIN-per-BUILTIN.
arbitrary compound units beyond that are not yet supported.
This ticket number hasn’t been used in an upstream/master commit, so the ticket can stick around for ICU 69.
It looks like this will have to wait for 69.
Too disruptive to squeeze into 67.