With this function you may obtain some basic information
on any provided locale identifier,
even if it is unsupported by ICU or if you pass a malformed locale
identifier (the one that is not, e.g., of the form Language_Country).
See stringi-locale for discussion.
This function does not do anything really complicated. In many
cases it is similar to a call to
as.list(stri_split_fixed(locale, "_", 3L)[[1]])
,
with locale
case mapped.
It may be used, however, to get insight on how ICU understands a given
locale identifier.