tree 0b6060c34b2d235d0639ad8a292b2103b57265af
parent 0da354bbcac7cc9159a6d46eb59ee554f39a7db7
author Frank Tang <ftang@chromium.org> 1597448366 -0700
committer Frank Yung-Fong Tang <41213225+FrankYFTang@users.noreply.github.com> 1597702681 -0700

ICU-21159 Document U_USING_DEFAULT_WARNING in .h

Document the fact
uloc_getDisplay(Language|Script|Country|Variant|Keyword|KeywordValue)
would fallback with the code, case canonicalied in same cases, and
set the status to U_USING_DEFAULT_WARNING.

No change to the implementation behavior. Only complete the missing
comments and tweak line wrap, remove double spaces and add test to
validate this pre-existing behavior that I added the documents now.