The function
unicode-both-case-p
returns
flag
as true if char has case according to the Unicode rules specified by
style
.
The name of
unicode-both-case-p
is slightly confusing, because it matches the ANSI Common Lisp definition "a character with case" whereas there is no guarantee that both cases actually exist. Note also that there are some "alpha" chars which are not lower or upper case.
LispWorks User Guide and Reference Manual - 21 Dec 2011