We were including, for each entry we got from CLDR or the system,
minimal and maximal additions from CLDR's likely-subtag rules, plus
versions with script omitted and possibly also territory added, when
likely-equivalent to the original. Include also the converse, with
territory omitted and possibly also script added when
likely-equivalent, so as to control order when these entries also show
up by truncation of others.
The pick to 6.8 was bound to get conflicts and is really a back-port
of reasonably future-compatible behavior to the 6.8 code-base. Results
from uiLanguages() itself are not the same as in 6.9 - truncations are
not included, because QTranslator takes care of those. It includes,
from commit cbf49f735e3cca85922a85d6548666816686db78 and earlier work
on 6.9, various test-cases adapted to this altered aim. It also fixes
some minor details that I'll now forward-port to dev and pick back to
6.9, that I worked out how to do while wrestling to make those
test-cases produce sensible results.
Task-number: QTBUG-131894
Change-Id: I363bfe31867be43807fe3b4942dafa186b8d2e94
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
(cherry picked from commit 7f9ee43de783105d8de0a0b614751eec639131f8)
(cherry picked from commit 45c9a35d359381419f529ba36a5381b1302bf0f4)
1f55a339d2